You searched for subject:(Characterization).
Showing records 1 – 30 of
5967 total matches.
◁ [1] [2] [3] [4] [5] … [199] ▶
Vanderbilt University
1.
Copeland, Courtney Amanda.
Impact of novel Caveolin-1 frameshift mutants on caveolae assembly and function.
Degree: PhD, Molecular Physiology and Biophysics, 2017, Vanderbilt University
URL: http://hdl.handle.net/1803/10544 
► Caveolin-1 (CAV1) is an essential protein for the formation of caveolae, invaginations found at the plasma membrane. Caveolae are abundant in many cell types and…
(more)
▼ Caveolin-1 (CAV1) is an essential protein for the formation of caveolae, invaginations found at the plasma membrane. Caveolae are abundant in many cell types and numerous functions have been identified, including modulating cell signaling and buffering cells from mechanical stress. However, exactly how newly identified mutant forms of CAV1 impact caveolae formation and function remains to be elucidated. Previous work has highlighted the importance of the C-terminus of CAV1 in the assembly of CAV1 complexes, and trafficking to the plasma membrane. Investigation of the frameshift mutant CAV1-P158 and the truncation mutant CAV1-F160X revealed that alteration of the amino acid sequence, or truncation of the C-terminus of CAV1 had little effect on caveolae assembly. Interestingly, incorporation of these mutant proteins into hybrid caveolae with wild type CAV1 led to the formation of caveolae with altered biochemical and molecular properties, indicating that an intact C-terminus may also be important for normal caveolae function. Thus, the incorporation of CAV1 proteins with C-terminal mutations into caveolae is a critical factor associated with human diseases.
Advisors/Committee Members: Todd Graham (committee member), Ambra Pozzi (committee member), Aurelio Galli (committee member), David Harrison (committee member), Roger Colbran (Committee Chair).
Subjects/Keywords: Molecular Characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Copeland, C. A. (2017). Impact of novel Caveolin-1 frameshift mutants on caveolae assembly and function. (Doctoral Dissertation). Vanderbilt University. Retrieved from http://hdl.handle.net/1803/10544
Chicago Manual of Style (16th Edition):
Copeland, Courtney Amanda. “Impact of novel Caveolin-1 frameshift mutants on caveolae assembly and function.” 2017. Doctoral Dissertation, Vanderbilt University. Accessed April 10, 2021.
http://hdl.handle.net/1803/10544.
MLA Handbook (7th Edition):
Copeland, Courtney Amanda. “Impact of novel Caveolin-1 frameshift mutants on caveolae assembly and function.” 2017. Web. 10 Apr 2021.
Vancouver:
Copeland CA. Impact of novel Caveolin-1 frameshift mutants on caveolae assembly and function. [Internet] [Doctoral dissertation]. Vanderbilt University; 2017. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/1803/10544.
Council of Science Editors:
Copeland CA. Impact of novel Caveolin-1 frameshift mutants on caveolae assembly and function. [Doctoral Dissertation]. Vanderbilt University; 2017. Available from: http://hdl.handle.net/1803/10544
McMaster University
2.
Nagaraj, Kishor.
Microstructural Characterization of Al-Fe Intermetallics in Aluminum Alloy 7xxx during Controlled Solidification.
Degree: MASc, 2018, McMaster University
URL: http://hdl.handle.net/11375/23751
► Aluminum 7xxx series alloys have been a major focus for lightweight automotive structural components to achieve the targeted weight reductions by auto industries and, in…
(more)
▼ Aluminum 7xxx series alloys have been a major focus for lightweight automotive
structural components to achieve the targeted weight reductions by auto industries and, in
turn, to increase the vehicle fuel efficiency. AA 7xxx series wrought alloy components
have been widely used by the aerospace and automotive industries for many decades due
to their low density and high strength. However, although near net shape casting of these
alloys has many benefits versus wrought alloys; this processing route has been a
challenge for the researchers and the auto industry because of limitations due to
castability issues such as like hot tearing and die soldering. One possible mitigation
strategy involves the addition of iron (Fe) as one of the major alloying element and then
subsequently optimizing the alloy chemistry and solidification parameters in terms of die
soldering.
The objective of this thesis is to determine the microstructural evolution of any Al-Fe
intermetallic phases with respect to cooling rate during solidification for a range of AA
7xxx series alloy compositions. Fe was added at three different levels in a total of nine
alloy composition developed from a Taguchi experimental matrix based on the
interaction of three composition levels for four alloying elements. The alloys were cast
using a custom built casting rig while the cooling rates were measured along the length of
a directionally solidifying sample.
The thermocouple measurements were analyzed to determine the velocity of the
solid/liquid interface, overall cooling rate and thermal arrest points for later correlation to
variations in the microstructural development of any Al-Fe intermetallic phase particles
present in the experimental alloys. Metallographic samples were taken at locations with
iv
known cooling rates to determine the resultant microstructure. Scanning electron
microscopy (SEM) and energy dispersive X-Ray spectroscopy (EDS) were performed to
obtain elemental analyses of the Al-Fe intermetallic phases for present in the samples.
The Fe maps obtained by EDS were processed and analyzed using Image-J software to
determine the size distribution and area fraction of the Al-Fe intermetallic phases as a
function of alloy composition and solidification rates. Also, a regression analysis was
used to develop a statistical model to predict the variation of intermetallic particle size
and area fraction of the Al-Fe intermetallic phases as a function of alloy composition and
cooling rate.
Based on the experimental investigation and analysis of the nine Al 7xxx-Fe alloys the
results can be summarized as follows: (1) Cooling rate has a strong influence on the
chemistry and morphology of the Fe intermetallic particles: It was determined that the
dominant intermetallic species changes from the equilibrium Al3Fe to the metastable
Al6Fe alloys for cooling rates in excess of approximately10 °C/s. (2) Alloy cooling rate
does significantly affect the area fraction of the Fe…
Advisors/Committee Members: McDermid, Joseph, Mechanical Engineering.
Subjects/Keywords: Microstructural Characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nagaraj, K. (2018). Microstructural Characterization of Al-Fe Intermetallics in Aluminum Alloy 7xxx during Controlled Solidification. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/23751
Chicago Manual of Style (16th Edition):
Nagaraj, Kishor. “Microstructural Characterization of Al-Fe Intermetallics in Aluminum Alloy 7xxx during Controlled Solidification.” 2018. Masters Thesis, McMaster University. Accessed April 10, 2021.
http://hdl.handle.net/11375/23751.
MLA Handbook (7th Edition):
Nagaraj, Kishor. “Microstructural Characterization of Al-Fe Intermetallics in Aluminum Alloy 7xxx during Controlled Solidification.” 2018. Web. 10 Apr 2021.
Vancouver:
Nagaraj K. Microstructural Characterization of Al-Fe Intermetallics in Aluminum Alloy 7xxx during Controlled Solidification. [Internet] [Masters thesis]. McMaster University; 2018. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/11375/23751.
Council of Science Editors:
Nagaraj K. Microstructural Characterization of Al-Fe Intermetallics in Aluminum Alloy 7xxx during Controlled Solidification. [Masters Thesis]. McMaster University; 2018. Available from: http://hdl.handle.net/11375/23751
Université de Neuchâtel
3.
Comunian, Alessandro.
Probability aggregaton methods and multiple-point statistics
for 3D modeling of aquifer heterogeneity from 2D training
images.
Degree: 2011, Université de Neuchâtel
URL: http://doc.rero.ch/record/21700
► Multiple-point statistics (MPS) is a rising method for the characterization of heterogeneity. Its strength and its Achilles' heel lie in the training image, which is…
(more)
▼ Multiple-point statistics (MPS) is a rising method for
the
characterization of heterogeneity. Its strength and its
Achilles' heel lie in the training image, which is the conceptual
model of geological heterogeneity on which MPS simulations are
based. Indeed, on one side the use of the training image allows
great flexibility when for example for bi-dimensional (2D)
simulation a training image can be provided by a photo-mosaic of an
outcrop or by a sketch drawn by a geologist. On the other side, in
three-dimensions (3D) a training image is rarely available.
When the information provided by a 3D image is
not accessible, then one must somehow use probabilistic information
which comes from lower dimen- sion sources, like for example 2D
training images. If different 2D sources of information are
available, one possibility is to aggregate the corresponding
probability information. This problem is very general and several
methods exist. Two main categories of methods are distinguished:
those based on the sum (convex) and those based on the
multiplication (non-convex). When the weighting factors can be
determined from some training data, the best reliabilities are
obtained with the Beta-transformed linear pool and the Bor- diey's
formula. Instead, when training data are not accessible, reasonably
reliable results can be obtained with the Bordley's formula and
with the Markovian-type categorical prediction.
One convex method and one non-convex method
are tested for the ag- gregation of information coming from 2D
training images. For the tests, one 3D image of a micro-computed
tomography of a sandstone and one 3D realization of a
fluvio-glacial environment are used as references. Two di-
mensional slices of the reference 3D images are used as training
images for providing the information to be aggregated with the
methods cited above, but also for the simulation with two novel
method proposed here. One of this methods is baaed on sequential 2D
simulations conditioned by the data computed during the previous
simulation steps (method s2Dcd). With this last method it is
possible to obtain , without the use of a 3D training im- age, 3D
simulations which can be considered close to the reference images
according to most comparison criteria considered. Moreover, while
the re- sults obtained with the method s2Dcd are close to the
results obtained with a MPS simulation which make use of a 3D
training image, the CPU time required by s2Dcd is from two to four
orders of magnitude smaller than with a traditional 3D simulation.
This computational efficiency is a step forward for the
introduction of MPS in frameworks which require a great number of
realizations in a reasonably restricted amount of time, like for
example Monte Carlo methods or stochastic inverse problems.
Other techniques exists to deal with the
simulation in 3D when a 3D training image is not available. One of
this techniques, developed in this thesis' framework, is applied
for the simulation of the image of the fluvio- glacial aquifer
analog used as…
Advisors/Committee Members: Philippe (Dir.), Julien (Codir.).
Subjects/Keywords: aquifer characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Comunian, A. (2011). Probability aggregaton methods and multiple-point statistics
for 3D modeling of aquifer heterogeneity from 2D training
images. (Thesis). Université de Neuchâtel. Retrieved from http://doc.rero.ch/record/21700
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Comunian, Alessandro. “Probability aggregaton methods and multiple-point statistics
for 3D modeling of aquifer heterogeneity from 2D training
images.” 2011. Thesis, Université de Neuchâtel. Accessed April 10, 2021.
http://doc.rero.ch/record/21700.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Comunian, Alessandro. “Probability aggregaton methods and multiple-point statistics
for 3D modeling of aquifer heterogeneity from 2D training
images.” 2011. Web. 10 Apr 2021.
Vancouver:
Comunian A. Probability aggregaton methods and multiple-point statistics
for 3D modeling of aquifer heterogeneity from 2D training
images. [Internet] [Thesis]. Université de Neuchâtel; 2011. [cited 2021 Apr 10].
Available from: http://doc.rero.ch/record/21700.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Comunian A. Probability aggregaton methods and multiple-point statistics
for 3D modeling of aquifer heterogeneity from 2D training
images. [Thesis]. Université de Neuchâtel; 2011. Available from: http://doc.rero.ch/record/21700
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Debrecen
4.
Iwenofu, Bosah.
The synthesis and characterization of poly[(1,2-isoindolene)-(1-sulfane-3-phenylene)]
.
Degree: DE – TEK – Természettudományi és Technológiai Kar – Kémiai Intézet, 2012, University of Debrecen
URL: http://hdl.handle.net/2437/154746
Poly[(1,2-isoindolene)-(1-sulfane-3-phenylene)] new isoindole based copolymer were prepared in a simple polycondensation reaction between ortho-phthalaldehyde and 3-aminothiophenol. The reaction proceeds under mild conditions without the presence of any catalyst.
Advisors/Committee Members: Nagy, Miklós (advisor).Subjects/Keywords: synthesis;
characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Iwenofu, B. (2012). The synthesis and characterization of poly[(1,2-isoindolene)-(1-sulfane-3-phenylene)]
. (Thesis). University of Debrecen. Retrieved from http://hdl.handle.net/2437/154746
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Iwenofu, Bosah. “The synthesis and characterization of poly[(1,2-isoindolene)-(1-sulfane-3-phenylene)]
.” 2012. Thesis, University of Debrecen. Accessed April 10, 2021.
http://hdl.handle.net/2437/154746.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Iwenofu, Bosah. “The synthesis and characterization of poly[(1,2-isoindolene)-(1-sulfane-3-phenylene)]
.” 2012. Web. 10 Apr 2021.
Vancouver:
Iwenofu B. The synthesis and characterization of poly[(1,2-isoindolene)-(1-sulfane-3-phenylene)]
. [Internet] [Thesis]. University of Debrecen; 2012. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/2437/154746.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Iwenofu B. The synthesis and characterization of poly[(1,2-isoindolene)-(1-sulfane-3-phenylene)]
. [Thesis]. University of Debrecen; 2012. Available from: http://hdl.handle.net/2437/154746
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
5.
Park, Hyungjin.
Dispositifs innovants de la technologie FD-SOI : Innovative devices in FD-SOI technology.
Degree: Docteur es, Nanoélectronique et nanotechnologie, 2019, Université Grenoble Alpes (ComUE)
URL: http://www.theses.fr/2019GREAT039
► L'objectif principal de ce travail de doctorat est d'étudier les principes fondamentaux des effets de corps flottants (FBE) dans les dispositifs FDSOI ultraminces de dernières…
(more)
▼ L'objectif principal de ce travail de doctorat est d'étudier les principes fondamentaux des effets de corps flottants (FBE) dans les dispositifs FDSOI ultraminces de dernières générations. Plusieurs FBE, (i) kink, (ii) FBE induit par la grille, (iii) transistor bipolaire parasite, (iv) commutation brusque, (v) hystérésis de courant, et (vi) effet transitoire (MSD), sont examinés en termes d’interaction entre des trous et des électrons dans le corps ultramince. La clé de voûte est que les FBE proviennent de l'interaction des trous en excès qui sont stockés ou éliminés. Pour une meilleure compréhension des FBE, la variation du potentiel interne Vb a été mesurée directement sur les n-MOSFET a contact en H. La variation dynamique de Vb a également été étudiée grâce aux contacts latéraux P+ prolongés dans le silicium non dopé situé sous la grille avant.Grâce à la mesure de Vb, trois résultats principaux ont été mis en évidence pour la première fois: (i) la corrélation entre l’apparition des FBE et la variation de Vb, (ii) de nouvelles preuves expérimentales de l’effet de super-couplage observé alors que le potentiel de surface voire entre déplétion et inversion, (iii) une nouvelle méthode d'extraction de la tension de seuil, comparée à la méthode typique basée sur la caractéristique courant-tension.Enfin, des dispositifs FDSOI innovants, comme le MOSFET latéral N+NN+ sur InGaAs à grille arrière, et le Z2-FET en tant que magnétodiode et capteur optique, sont caractérisés. Nous démontrons les performances de base du substrat InGaAs sur isolant en utilisant la technique du pseudo-MOSFET. Les caractéristiques de détection du Z2-FET sont vérifiées sous champ magnétique et sous éclairage.
The main purpose of this PhD work is to investigate the fundamentals of floating body effects (FBEs) in recent generations of ultrathin FDSOI devices. Several FBEs, (i) kink effect, (ii) gate-induced FBE, (iii) parasitic bipolar transistor, (iv) sharp switching, (v) current hysteresis, and (vi) transient and history effect (MSD), are scrutinized in terms of interaction between holes and electrons in ultrathin transistor body. The key point is that in an n-channel SOI MOSFET the FBEs are originated from the interplay of the excess holes which are either being stored or eliminated. For better understanding of FBEs, the body potential Vb has measured directly in H-gate body contact n-MOSFETs. The dynamic Vb variation has also been monitored successfully thanks to lateral P+ body contacts extended into the undoped-silicon film underneath the front-gate.Through the measurements of Vb, there are three major findings highlighted for the first time: (i) correlation between the onset of the FBEs and the Vb variation, (ii) new experimental evidence of super-coupling effect observed while the surface potential is changed from depletion to volume inversion, (iii) establishment of a new technique for extracting threshold voltage VT compared with the typical methods based on the current-voltage characteristics.Finally, innovative FDSOI devices such as…
Advisors/Committee Members: Colinge, Jean-Pierre (thesis director), Cristoloveanu, Sorin (thesis director).
Subjects/Keywords: Simulation; Modeling; Characterization; Simulation; Modeling; Characterization; 620
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Park, H. (2019). Dispositifs innovants de la technologie FD-SOI : Innovative devices in FD-SOI technology. (Doctoral Dissertation). Université Grenoble Alpes (ComUE). Retrieved from http://www.theses.fr/2019GREAT039
Chicago Manual of Style (16th Edition):
Park, Hyungjin. “Dispositifs innovants de la technologie FD-SOI : Innovative devices in FD-SOI technology.” 2019. Doctoral Dissertation, Université Grenoble Alpes (ComUE). Accessed April 10, 2021.
http://www.theses.fr/2019GREAT039.
MLA Handbook (7th Edition):
Park, Hyungjin. “Dispositifs innovants de la technologie FD-SOI : Innovative devices in FD-SOI technology.” 2019. Web. 10 Apr 2021.
Vancouver:
Park H. Dispositifs innovants de la technologie FD-SOI : Innovative devices in FD-SOI technology. [Internet] [Doctoral dissertation]. Université Grenoble Alpes (ComUE); 2019. [cited 2021 Apr 10].
Available from: http://www.theses.fr/2019GREAT039.
Council of Science Editors:
Park H. Dispositifs innovants de la technologie FD-SOI : Innovative devices in FD-SOI technology. [Doctoral Dissertation]. Université Grenoble Alpes (ComUE); 2019. Available from: http://www.theses.fr/2019GREAT039
6.
Moula, Golam.
Plasmon-Enhanced Raman and Resonance Raman Scattering and
Single Molecule Detection in Langmuir-Blodgett Monolayers.
Degree: PhD, Chemistry and
Biochemistry, 2011, National Library of Canada
URL: http://scholar.uwindsor.ca/etd/395
► The present work explores vibrational Raman spectroscopy. Vibrational Raman and vibrational infrared are the most commonly used spectroscopies for detection and identification of molecules with…
(more)
▼ The present work explores vibrational Raman
spectroscopy. Vibrational Raman and vibrational infrared are the
most commonly used spectroscopies for detection and identification
of molecules with their vibrational fingerprint. Under certain
conditions, molecules display unique florescence and Raman
scattering behavior when they are close to metal nanostructures
sustaining localized surface plasmon resonances (LSPR), giving rise
to surface-enhanced Raman scattering (SERS) and surface-enhanced
resonance Raman scattering (SERRS). The utilization of LSPR in
metallic nanoparticles, in particular silver and gold
nanostructures, is a remarkable means of improving the efficiency
of Raman scattering enhancing optical signals in SERS and SERRS.
Correspondingly, the fabrication and
characterization of silver and
gold island films are first presented, and SERS signals enhancement
of an organic dye on these metal nanostructured films are
demonstrated. The excitations are characterized by UV-Vis
absorption spectroscopy, while the morphology is revealed by atomic
force microscopy (AFM). To control the surface coverage of the
metal nanostructures, the Langmuir-Blodgett (LB) technique is used
to coat the SERS substrate with monomolecular layers of several
target systems, such as dyes and phospholipids. The most important
results in this work are in the field of single molecule detection
(SMD) using two spectroscopic approaches: LB-SERRS and LB-SERS.
LB-SERRS improves the scattering efficiency from the electronic
resonances (resonance Raman) of dye using silver island film with a
plasmon absorption overlapping the molecular absorption. Several
experiments are designed to the statistical average of LB-SERRS
spectra, and the statistical breakdown observed in spectral
characteristics when SMD is approached. The development of other
SERS-substrates was attempted to control plasmonic using LSPR. A
convenient method was pursued using a self-assembly of silver
colloidal nanoparticles on a silanized glass surface. The SERS
spectral evidence is presented to validate the substrate
development. Surface-enhanced florescence (SEF) was also used for
single molecule studies. Shell-isolated nanoparticles (SHINs) are
used to produce SEF that named SHINEF. Using mixed LB monolayers of
perylene tetracarboxylic (PTCD) derivatives, we report single
molecule fluorescence and single molecule SERRS. In addition,
overtones and combinations of fundamental vibrational modes are
seen with atypical relative intensity in the LB-SERRS spectra of
PTCDs.
Advisors/Committee Members: Aroca, Ricardo (Chemistry and Biochemistry).
Subjects/Keywords: Materials Characterization; Analytical.
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Moula, G. (2011). Plasmon-Enhanced Raman and Resonance Raman Scattering and
Single Molecule Detection in Langmuir-Blodgett Monolayers. (Doctoral Dissertation). National Library of Canada. Retrieved from http://scholar.uwindsor.ca/etd/395
Chicago Manual of Style (16th Edition):
Moula, Golam. “Plasmon-Enhanced Raman and Resonance Raman Scattering and
Single Molecule Detection in Langmuir-Blodgett Monolayers.” 2011. Doctoral Dissertation, National Library of Canada. Accessed April 10, 2021.
http://scholar.uwindsor.ca/etd/395.
MLA Handbook (7th Edition):
Moula, Golam. “Plasmon-Enhanced Raman and Resonance Raman Scattering and
Single Molecule Detection in Langmuir-Blodgett Monolayers.” 2011. Web. 10 Apr 2021.
Vancouver:
Moula G. Plasmon-Enhanced Raman and Resonance Raman Scattering and
Single Molecule Detection in Langmuir-Blodgett Monolayers. [Internet] [Doctoral dissertation]. National Library of Canada; 2011. [cited 2021 Apr 10].
Available from: http://scholar.uwindsor.ca/etd/395.
Council of Science Editors:
Moula G. Plasmon-Enhanced Raman and Resonance Raman Scattering and
Single Molecule Detection in Langmuir-Blodgett Monolayers. [Doctoral Dissertation]. National Library of Canada; 2011. Available from: http://scholar.uwindsor.ca/etd/395
Mississippi State University
7.
Bhatt, Chet Raj.
Material characterization using laser-induced breakdown spectroscopy.
Degree: PhD, Physics and Astronomy, 2018, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09142017-200240/
;
► Laser-induced breakdown spectroscopy (LIBS) has been established as a rapid, in situ, and real-time spectroscopic analytical technique for material characterization. It is very handy…
(more)
▼ Laser-induced breakdown spectroscopy (LIBS) has been established as a rapid, in situ, and real-time spectroscopic analytical technique for material
characterization. It is very handy for the study of all kinds of materials irrespective of their state. After being used for a Mars mission, LIBS has gained global attention and many scientific researches are investigating its applications. The main objective of this dissertation is to study the possibility of using laser spectroscopic sensing techniques for material
characterization and if possible, to develop methodologies.
Studying molecular emission spectra for elemental analysis is a relatively new trend in the spectroscopic field. Molecular emission from SrCl and SrO observed in LIBS spectra were analyzed and compared with atomic emission from Sr. Calibration models were developed using both molecular bands and atomic spectral peaks.
The determination of nutritional elements in crops, vegetables, and fruits is very important to evaluate their nutritional status. The LIBS technique was applied to identify the nutritional elements present in cauliflower and broccoli, and to evaluate the difference between organic and conventional vegetables in terms of nutritional elements. Principal
component analysis (PCA) and one-to-one comparison using Student's t-test were employed for discrimination between organic and conventional vegetable flowers.
Early iron and steel production in the state of Pennsylvania (United States) mostly utilized blast furnaces that were operated by charcoal as a primary fuel, followed by anthracite, then coke. The process left behind a by-product known as blast furnace slag. Blast furnace slag, non-metallic in nature, appears to have various industrial applications. LIBS was used for the analysis of charcoal blast furnace slags and qualitative as well as quantitative analyses were demonstrated.
To evaluate the possibility of using the LIBS technique to detect and quantify rare earth elements, three consecutive studies were executed. Firstly, pure oxides of six rare earth elements were studied and then real samples directly taken from natural ores were analyzed. In the third step, two rare earth elements (Eu and Yb) in aqueous solutions were studied by underwater LIBS and the pressure effect on the plasma emission is discussed.
Advisors/Committee Members: David L. Monts (committee member), Hendrik F. Arnoldus (committee member), Jagdish P. Singh (committee member), Dustin McIntyre (committee member), Ratneshwar Jha (committee member).
Subjects/Keywords: Material characterization; LIBS
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bhatt, C. R. (2018). Material characterization using laser-induced breakdown spectroscopy. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-09142017-200240/ ;
Chicago Manual of Style (16th Edition):
Bhatt, Chet Raj. “Material characterization using laser-induced breakdown spectroscopy.” 2018. Doctoral Dissertation, Mississippi State University. Accessed April 10, 2021.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-09142017-200240/ ;.
MLA Handbook (7th Edition):
Bhatt, Chet Raj. “Material characterization using laser-induced breakdown spectroscopy.” 2018. Web. 10 Apr 2021.
Vancouver:
Bhatt CR. Material characterization using laser-induced breakdown spectroscopy. [Internet] [Doctoral dissertation]. Mississippi State University; 2018. [cited 2021 Apr 10].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09142017-200240/ ;.
Council of Science Editors:
Bhatt CR. Material characterization using laser-induced breakdown spectroscopy. [Doctoral Dissertation]. Mississippi State University; 2018. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-09142017-200240/ ;
Rochester Institute of Technology
8.
Baker, Cameron.
Homology Based Motif Generation.
Degree: MS, Thomas H. Gosnell School of Life Sciences (COS), 2015, Rochester Institute of Technology
URL: https://scholarworks.rit.edu/theses/9163
► Generating motifs from known active sites and matching those motifs to an uncharacterized protein is a classic way of determining protein function. Until now,…
(more)
▼ Generating motifs from known active sites and matching those motifs to an uncharacterized protein is a classic way of determining protein function. Until now, the generation of motifs has been based purely on enzymatic function. This approach does not account for situations where highly different active sites can arrive at the same function by processes like convergent evolution. As such, a secondary metric on which to base the generation of motifs is necessary. This metric exists in the form of UniProt designation for homologous proteins on a global scale or PFam for designation of homologous proteins at the active site level.
Here, we describe a tool to generate highly selective motifs using the aforementioned metrics. We were able to collapse a large number of proteins into their representative motifs with little loss in sensitivity, creating an “average” representation of each motif. These motifs will aid the characterizing proteins of known structure but unknown function.
Advisors/Committee Members: Paul A. Craig.
Subjects/Keywords: Protein characterization; PyMOL
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Baker, C. (2015). Homology Based Motif Generation. (Masters Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/9163
Chicago Manual of Style (16th Edition):
Baker, Cameron. “Homology Based Motif Generation.” 2015. Masters Thesis, Rochester Institute of Technology. Accessed April 10, 2021.
https://scholarworks.rit.edu/theses/9163.
MLA Handbook (7th Edition):
Baker, Cameron. “Homology Based Motif Generation.” 2015. Web. 10 Apr 2021.
Vancouver:
Baker C. Homology Based Motif Generation. [Internet] [Masters thesis]. Rochester Institute of Technology; 2015. [cited 2021 Apr 10].
Available from: https://scholarworks.rit.edu/theses/9163.
Council of Science Editors:
Baker C. Homology Based Motif Generation. [Masters Thesis]. Rochester Institute of Technology; 2015. Available from: https://scholarworks.rit.edu/theses/9163
University of Alberta
9.
Salehi, Mohammadreza.
Characterization of mature fine tailings in the context of
its response to chemical treatment.
Degree: MS, Department of Chemical and Materials
Engineering, 2010, University of Alberta
URL: https://era.library.ualberta.ca/files/zg64tn162
► Continuous accumulation of Mature Fine Tailings (MFT) is a major challenge to oil sands industry. To reduce the inventory of MFT through development of novel…
(more)
▼ Continuous accumulation of Mature Fine Tailings (MFT)
is a major challenge to oil sands industry. To reduce the inventory
of MFT through development of novel tailings treatment
technologies, it is essential to understand the stabilization
mechanism of fine solids in MFT. This project aims at
characterizing fine solids of MFT. A novel method is developed in
this study to understand characteristics of fine solids in MFT by
studying their response to the changes in water chemistry and
chemical treatment. Settling and rheological response of MFT to
chemical additives is determined. Combined with solids
characterization of the different layers of settled MFT, an
enhanced understanding of stabilization of fine solids in MFT is
gained. The knowledge generated through this study will provide a
scientific basis for technology development of MFT
treatment.
Subjects/Keywords: Characterization; MFT; Rheology
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Salehi, M. (2010). Characterization of mature fine tailings in the context of
its response to chemical treatment. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/zg64tn162
Chicago Manual of Style (16th Edition):
Salehi, Mohammadreza. “Characterization of mature fine tailings in the context of
its response to chemical treatment.” 2010. Masters Thesis, University of Alberta. Accessed April 10, 2021.
https://era.library.ualberta.ca/files/zg64tn162.
MLA Handbook (7th Edition):
Salehi, Mohammadreza. “Characterization of mature fine tailings in the context of
its response to chemical treatment.” 2010. Web. 10 Apr 2021.
Vancouver:
Salehi M. Characterization of mature fine tailings in the context of
its response to chemical treatment. [Internet] [Masters thesis]. University of Alberta; 2010. [cited 2021 Apr 10].
Available from: https://era.library.ualberta.ca/files/zg64tn162.
Council of Science Editors:
Salehi M. Characterization of mature fine tailings in the context of
its response to chemical treatment. [Masters Thesis]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/zg64tn162
Texas A&M University
10.
Moridis, Nefeli G.
A Production Characterization of the Eagle Ford Shale, Texas - A Bayesian Analysis Approach.
Degree: MS, Petroleum Engineering, 2015, Texas A&M University
URL: http://hdl.handle.net/1969.1/155011
► We begin this research by asking "can we better estimate reserves in unconventional reservoirs using Bayes' theorem?" To attempt to answer this question, we obtained…
(more)
▼ We begin this research by asking "can we better estimate reserves in unconventional reservoirs using Bayes' theorem?" To attempt to answer this question, we obtained data for 68 wells in the Greater Core of the Eagle Ford Shale, Texas. As process, we eliminated the wells that did not have enough data, that did not show a production decline and/or wells that had too much data noise (this left us with 8 wells for analysis). We next performed decline curve analysis (DCA) using the Modified Hyperbolic (MH) and Power-Law Exponential (PLE) models (the two most common DCA models), consisting in user-guided analysis software. Then, the Bayesian paradigm was implemented to calibrate the same two models on the same set of wells.
The primary focus of the research was the implementation of the Bayesian paradigm on the 8 well data set. We first performed a "best fit" parameter estimation using least squares optimization, which provided an optimized set of parameters for the two decline curve models. This was followed by using the Markov Chain Monte Carlo (MCMC) integration of the Bayesian posterior function for each model, which provided a full probabilistic description of its parameters. This allowed for the simulation of a number of likely realizations of the decline curves, from which first order statistics were computed to provide a confidence metric on the calibration of each model as applied to the production data of each well.
Results showed variation on the calibration of the MH and PLE models. The forward models (MH and PLE) either over- or underestimate the reserves compared with the Bayesian calibrations, proving that the Bayesian paradigm was able to capture a more accurate trend of the data and thus able to determine more accurate estimates of reserves. In industry, the same decline curve models are used for unconventional wells as for conventional wells, even though we know that the same models may not apply. Based on the proposed results, we believe that Bayesian inference yields more accurate estimates of reserves for unconventional reservoirs than deterministic DCA methods. Moreover, it provides a measure of confidence on the prediction of production as as function of varying data and varying decline curve models.
Advisors/Committee Members: Blasingame, Thomas A (advisor), Medina-Cetina, Zenon (advisor), Ayers, Water (committee member).
Subjects/Keywords: Production Characterization; Bayesian
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Moridis, N. G. (2015). A Production Characterization of the Eagle Ford Shale, Texas - A Bayesian Analysis Approach. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/155011
Chicago Manual of Style (16th Edition):
Moridis, Nefeli G. “A Production Characterization of the Eagle Ford Shale, Texas - A Bayesian Analysis Approach.” 2015. Masters Thesis, Texas A&M University. Accessed April 10, 2021.
http://hdl.handle.net/1969.1/155011.
MLA Handbook (7th Edition):
Moridis, Nefeli G. “A Production Characterization of the Eagle Ford Shale, Texas - A Bayesian Analysis Approach.” 2015. Web. 10 Apr 2021.
Vancouver:
Moridis NG. A Production Characterization of the Eagle Ford Shale, Texas - A Bayesian Analysis Approach. [Internet] [Masters thesis]. Texas A&M University; 2015. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/1969.1/155011.
Council of Science Editors:
Moridis NG. A Production Characterization of the Eagle Ford Shale, Texas - A Bayesian Analysis Approach. [Masters Thesis]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/155011
Penn State University
11.
Zhuang, Yuan.
LOSS PHENOMENOLOGY AND THE METHODOLOGY TO DERIVE LOSS FACTORS IN PIEZOELECTRIC CERAMICS
.
Degree: 2011, Penn State University
URL: https://submit-etda.libraries.psu.edu/catalog/12219
► The key factor for the miniaturization of piezoelectric devices is the power density, which is limited by the heat generation or internal losses. With accelerating…
(more)
▼ The key factor for the miniaturization of piezoelectric devices is the power density, which is limited by the heat generation or internal losses. With accelerating the commercialization of piezoelectric actuators and transducers, it becomes more and more significant to clarify the loss phenomenology, reduce the hysteresis losses, and increase the mechanical quality factor to enhance the efficiency and performance.
There are three loss components for piezoelectric vibrators, i.e., dielectric, elastic and piezoelectric losses. These loss factors are related with mechanical quality factors, which are the figure of merit of the material or device in the sense of efficiency. In order to obtain the mechanical quality factor Qm, IEEE standard provided the measurement method using the resonance and antiresonance frequencies. However, this
characterization assumes that the Q value at resonance is equal to the one at antiresonance all the time, which is not consistent with experiment results. For practical materials there is sometimes a big difference between the mechanical quality factors of the resonance (QA) and the antiresonance (QB), and in most cases higher QB can be observed. Therefore, in recent several years we are focusing on a new resonance AC drive methodology to measure the admittance curve accurately around both the resonance and antiresonance peaks for piezoelectric materials, from which QA and QB can be derived by the 3dB method. Various piezoelectric materials were characterized with this technique.
Further, the equations were derived showing the relations between quality factors and loss factors by the complex analysis of the admittance/ impedance expressions for specific piezoelectric vibrators. Using QA, QB, and the electromechanical coupling factor k, we can obtain three types of loss factors precisely. Among various vibration modes of piezoelectric vibrators, we focus on k31, kt, k33, kp, and k15 modes, which cover all the 20 parameters of the ferroelectric material with ∞mm/6mm crystal symmetry, i.e. piezoelectric ceramic. Plus some other derivations using the fundamental correlations, 20 loss factors can be obtained for all parameters. Using this technique the piezoelectric loss factor is confirmed to be comparable to dielectric and elastic losses and it is the factor that determines whether QB is larger than QA, though it was previously neglected by most researchers. After getting the full loss matrices, the loss anisotropy was accordingly discussed, and the extensive loss factor was verified to be smaller than the intensive one.
This methodology is an essential supplement to the current IEEE standard on piezoelectric
characterization. The simplicity and accuracy of this technique are very attractive, and hopefully this proposal will be widely accepted as a standard in the piezoelectric community in the future. The inclusion of three loss factors is important for the admittance analysis and thermal simulation of piezoelectric devices in the “finite element method” software. Furthermore, taking…
Advisors/Committee Members: Kenji Uchino, Dissertation Advisor/Co-Advisor, Kenji Uchino, Committee Chair/Co-Chair, Leslie Eric Cross, Committee Member, Shizhuo Yin, Committee Member, Clive A Randall, Committee Member, Shujun Zhang, Committee Member.
Subjects/Keywords: loss characterization; piezoelectric
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zhuang, Y. (2011). LOSS PHENOMENOLOGY AND THE METHODOLOGY TO DERIVE LOSS FACTORS IN PIEZOELECTRIC CERAMICS
. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/12219
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Zhuang, Yuan. “LOSS PHENOMENOLOGY AND THE METHODOLOGY TO DERIVE LOSS FACTORS IN PIEZOELECTRIC CERAMICS
.” 2011. Thesis, Penn State University. Accessed April 10, 2021.
https://submit-etda.libraries.psu.edu/catalog/12219.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zhuang, Yuan. “LOSS PHENOMENOLOGY AND THE METHODOLOGY TO DERIVE LOSS FACTORS IN PIEZOELECTRIC CERAMICS
.” 2011. Web. 10 Apr 2021.
Vancouver:
Zhuang Y. LOSS PHENOMENOLOGY AND THE METHODOLOGY TO DERIVE LOSS FACTORS IN PIEZOELECTRIC CERAMICS
. [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Apr 10].
Available from: https://submit-etda.libraries.psu.edu/catalog/12219.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zhuang Y. LOSS PHENOMENOLOGY AND THE METHODOLOGY TO DERIVE LOSS FACTORS IN PIEZOELECTRIC CERAMICS
. [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/12219
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
12.
Nowroz, Abdullah Nazma.
Power Mapping of Computing Devices: Fundamentals and
Applications.
Degree: PhD, Electrical Sciences and Computer
Engineering, 2014, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:386124/
► Power consumption limits the maximum achievable performance of modern processors. Accurate power modeling is an essential step in both mobile and high-end processors. Large-scale transistor-level…
(more)
▼ Power consumption limits the maximum achievable
performance of modern processors. Accurate power modeling is an
essential step in both mobile and high-end processors. Large-scale
transistor-level power modeling is computationally very
challenging. As a result high-level power modeling is performed at
the expense of accuracy. Pre-silicon power tools need to be
complemented with post-silicon
characterization to determine the
true power consumption of circuits. Post-silicon power maps are
developed during debugging and
characterization phases of the
first-silicon, and then applied to improve the design during
re-spins and for future designs. Post-silicon power results can
also improve the accuracy of power and thermal models. We provide
fundamentals for post-silicon power validation using captured
thermal infrared emissions from back-side of integrated circuits.
We identify challenges associated with thermal-to-power inversion:
(1) spatial heat diffusion which blurs underlying power maps, and
(2) measurement noise in thermal imaging systems. We address these
challenges by devising optimization formulation that incorporates
Tikhonov filtering. To further increase the accuracy of power
mapping, we propose to use AC-based thermography which reduces the
impact of flicker noise and spatial heat diffusion. The average
power mapping error reduced from 40% using DC-based method to about
8.5% using the proposed AC-based method. A programmable circuit of
micro heaters is implemented, and used to validate our methods and
to quantify the improvements in power mapping attained from
regularization techniques and AC-based methodology. Using our novel
power mapping framework, we present versatile applications of
post-silicon power mapping. First, we power map a soft processor
embedded in a FPGA chip, and a real multi-core processor using
DC-based techniques, where we decompose the power-per-block into
dynamic and leakage power. We demonstrate methods for utilizing AC
framework on real processors. Second, we propose alternate way of
post-silicon power mapping with reconstructed thermal maps using
measurements from on-chip thermal sensors in-place of infrared
imaging, which reduces the cost of post-silicon power mapping
drastically. To reconstruct the thermal maps, we utilize full
thermal
characterization methods based on various frequency-domain
techniques. Third, we utilize the high resolution thermal and power
maps to formulate high-sensitivity hardware Trojan detection
techniques, which are scalable to large circuits.
Advisors/Committee Members: Reda, Sherief (Director), Bahar, Iris (Reader), Rosenstein, Jacob (Reader).
Subjects/Keywords: Post-silicon characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nowroz, A. N. (2014). Power Mapping of Computing Devices: Fundamentals and
Applications. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:386124/
Chicago Manual of Style (16th Edition):
Nowroz, Abdullah Nazma. “Power Mapping of Computing Devices: Fundamentals and
Applications.” 2014. Doctoral Dissertation, Brown University. Accessed April 10, 2021.
https://repository.library.brown.edu/studio/item/bdr:386124/.
MLA Handbook (7th Edition):
Nowroz, Abdullah Nazma. “Power Mapping of Computing Devices: Fundamentals and
Applications.” 2014. Web. 10 Apr 2021.
Vancouver:
Nowroz AN. Power Mapping of Computing Devices: Fundamentals and
Applications. [Internet] [Doctoral dissertation]. Brown University; 2014. [cited 2021 Apr 10].
Available from: https://repository.library.brown.edu/studio/item/bdr:386124/.
Council of Science Editors:
Nowroz AN. Power Mapping of Computing Devices: Fundamentals and
Applications. [Doctoral Dissertation]. Brown University; 2014. Available from: https://repository.library.brown.edu/studio/item/bdr:386124/
Addis Ababa University
13.
Fiseha, Bogale.
SYNTHESIS AND PARTIAL CHARACTERIZATION OF LADDER AND QUINOXALINE-BASED CO-FLUORENE LOW BANDGAP POLYMERS
.
Degree: 2012, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/485
► Thiophene-phenylene-thiophene fused heteroarene ladder-type monomeric unit which hinders “chain folding” and allows extended conjugation was synthesized along with two variants of quinoxaline-based donor-acceptor monomeric units.…
(more)
▼ Thiophene-phenylene-thiophene fused heteroarene ladder-type monomeric unit
which hinders “chain folding” and allows extended conjugation was synthesized
along with two variants of quinoxaline-based donor-acceptor monomeric units.
Subsequently the copolymerization between
previously
synthesized
tetramethyl-1,3,2-dioxaborolane)
these monomeric units and
2,2'-(9,9-dioctyl-9H-fluorene-2,7-diyl)bis(4,4,5,5-
was
effected
by
a
modified
Suzuki
polymerization methodology. The copolymers were partially characterized using
UV-vis absorption spectroscopy in both thin film and as chloroform solution,
cyclic voltammetry and fluorescence spectroscopy, for their bandgap and
quantum yield. The results from the electrochemical and spectroscopic analysis
revealed a bandgap of 2.4, 2.1, and 1.9 eV for polymers 53, 54 and 55,
respectively.
Advisors/Committee Members: Wendimagegn Mammo (Professor) (advisor).
Subjects/Keywords: SYNTHESIS;
PARTIAL CHARACTERIZATION
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Fiseha, B. (2012). SYNTHESIS AND PARTIAL CHARACTERIZATION OF LADDER AND QUINOXALINE-BASED CO-FLUORENE LOW BANDGAP POLYMERS
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/485
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Fiseha, Bogale. “SYNTHESIS AND PARTIAL CHARACTERIZATION OF LADDER AND QUINOXALINE-BASED CO-FLUORENE LOW BANDGAP POLYMERS
.” 2012. Thesis, Addis Ababa University. Accessed April 10, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/485.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Fiseha, Bogale. “SYNTHESIS AND PARTIAL CHARACTERIZATION OF LADDER AND QUINOXALINE-BASED CO-FLUORENE LOW BANDGAP POLYMERS
.” 2012. Web. 10 Apr 2021.
Vancouver:
Fiseha B. SYNTHESIS AND PARTIAL CHARACTERIZATION OF LADDER AND QUINOXALINE-BASED CO-FLUORENE LOW BANDGAP POLYMERS
. [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2021 Apr 10].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/485.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Fiseha B. SYNTHESIS AND PARTIAL CHARACTERIZATION OF LADDER AND QUINOXALINE-BASED CO-FLUORENE LOW BANDGAP POLYMERS
. [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/485
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Houston
14.
Oyetunji, Oyedoyin Opeoluwa 1986-.
INTEGRATING ROCK PHYSICS AND SEISMIC INVERSION FOR RESERVOIR CHARACTERIZATION IN THE GULF OF MEXICO.
Degree: MS, Geophysics, 2013, University of Houston
URL: http://hdl.handle.net/10657/971
► Seismic amplitude study is a crucial aspect in reservoir characterization as it helps to analyze seismic responses before interpretation. In this study, an attempt was…
(more)
▼ Seismic amplitude study is a crucial aspect in reservoir
characterization as it helps to analyze seismic responses before interpretation. In this study, an attempt was made to identifying the reservoirs present in the High Island field at well locations. Rock physics modeling and seismic inversion were applied in an integrated approach to study the seismic response of these reservoirs and also delineate other hydrocarbon-charged reservoirs in the field. New elastic logs were generated and subsequently used for the rock physics analyses. Rock-property models using well-log data from the study area were evaluated. These models were used in analyzing the sand and shale log response of the study area. Well-log inversion is also carried out by minimizing the difference between modeled and measured logs.
The cross-plot analyses from wells successfully distinguished between fluids and lithology effect in the area, these were subsequently confirmed by AVO modeling. The result showed that lower values of Lambda-Rho, Vp/Vs ratio and impedance values correlated with areas containing hydrocarbons. Three-dimensional seismic interpretation was also carried out to provide structural and stratigraphic information of the study area; the horizons reflect structural features including faults which could serve as a trapping mechanism for hydrocarbons. The picked horizons were used to guide the interpolation of the initial model used during seismic inversion. The seismic inversion helped delineate hydrocarbon reservoirs and also aided the propagation of reservoir parameters to include areal extent of the reservoir and to see how this varies within the field.
Advisors/Committee Members: Han, De-Hua (advisor), Nasser, Mosab (committee member), Chesnokov, Evgeni M. (committee member), Murphy, Michael A. (committee member).
Subjects/Keywords: Reservoir characterization; Geophysics
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Oyetunji, O. O. 1. (2013). INTEGRATING ROCK PHYSICS AND SEISMIC INVERSION FOR RESERVOIR CHARACTERIZATION IN THE GULF OF MEXICO. (Masters Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/971
Chicago Manual of Style (16th Edition):
Oyetunji, Oyedoyin Opeoluwa 1986-. “INTEGRATING ROCK PHYSICS AND SEISMIC INVERSION FOR RESERVOIR CHARACTERIZATION IN THE GULF OF MEXICO.” 2013. Masters Thesis, University of Houston. Accessed April 10, 2021.
http://hdl.handle.net/10657/971.
MLA Handbook (7th Edition):
Oyetunji, Oyedoyin Opeoluwa 1986-. “INTEGRATING ROCK PHYSICS AND SEISMIC INVERSION FOR RESERVOIR CHARACTERIZATION IN THE GULF OF MEXICO.” 2013. Web. 10 Apr 2021.
Vancouver:
Oyetunji OO1. INTEGRATING ROCK PHYSICS AND SEISMIC INVERSION FOR RESERVOIR CHARACTERIZATION IN THE GULF OF MEXICO. [Internet] [Masters thesis]. University of Houston; 2013. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/10657/971.
Council of Science Editors:
Oyetunji OO1. INTEGRATING ROCK PHYSICS AND SEISMIC INVERSION FOR RESERVOIR CHARACTERIZATION IN THE GULF OF MEXICO. [Masters Thesis]. University of Houston; 2013. Available from: http://hdl.handle.net/10657/971
University of Windsor
15.
Moula, Golam.
Plasmon-Enhanced Raman and Resonance Raman Scattering and Single Molecule Detection in Langmuir-Blodgett Monolayers.
Degree: PhD, Chemistry and Biochemistry, 2011, University of Windsor
URL: https://scholar.uwindsor.ca/etd/395
► The present work explores vibrational Raman spectroscopy. Vibrational Raman and vibrational infrared are the most commonly used spectroscopies for detection and identification of molecules with…
(more)
▼ The present work explores vibrational Raman spectroscopy. Vibrational Raman and vibrational infrared are the most commonly used spectroscopies for detection and identification of molecules with their vibrational fingerprint. Under certain conditions, molecules display unique florescence and Raman scattering behavior when they are close to metal nanostructures sustaining localized surface plasmon resonances (LSPR), giving rise to surface-enhanced Raman scattering (SERS) and surface-enhanced resonance Raman scattering (SERRS). The utilization of LSPR in metallic nanoparticles, in particular silver and gold nanostructures, is a remarkable means of improving the efficiency of Raman scattering enhancing optical signals in SERS and SERRS. Correspondingly, the fabrication and
characterization of silver and gold island films are first presented, and SERS signals enhancement of an organic dye on these metal nanostructured films are demonstrated. The excitations are characterized by UV-Vis absorption spectroscopy, while the morphology is revealed by atomic force microscopy (AFM). To control the surface coverage of the metal nanostructures, the Langmuir-Blodgett (LB) technique is used to coat the SERS substrate with monomolecular layers of several target systems, such as dyes and phospholipids. The most important results in this work are in the field of single molecule detection (SMD) using two spectroscopic approaches: LB-SERRS and LB-SERS. LB-SERRS improves the scattering efficiency from the electronic resonances (resonance Raman) of dye using silver island film with a plasmon absorption overlapping the molecular absorption. Several experiments are designed to the statistical average of LB-SERRS spectra, and the statistical breakdown observed in spectral characteristics when SMD is approached. The development of other SERS-substrates was attempted to control plasmonic using LSPR. A convenient method was pursued using a self-assembly of silver colloidal nanoparticles on a silanized glass surface. The SERS spectral evidence is presented to validate the substrate development. Surface-enhanced florescence (SEF) was also used for single molecule studies. Shell-isolated nanoparticles (SHINs) are used to produce SEF that named SHINEF. Using mixed LB monolayers of perylene tetracarboxylic (PTCD) derivatives, we report single molecule fluorescence and single molecule SERRS. In addition, overtones and combinations of fundamental vibrational modes are seen with atypical relative intensity in the LB-SERRS spectra of PTCDs.
Advisors/Committee Members: Aroca, Ricardo (Chemistry and Biochemistry).
Subjects/Keywords: Materials Characterization; Analytical.
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Moula, G. (2011). Plasmon-Enhanced Raman and Resonance Raman Scattering and Single Molecule Detection in Langmuir-Blodgett Monolayers. (Doctoral Dissertation). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/395
Chicago Manual of Style (16th Edition):
Moula, Golam. “Plasmon-Enhanced Raman and Resonance Raman Scattering and Single Molecule Detection in Langmuir-Blodgett Monolayers.” 2011. Doctoral Dissertation, University of Windsor. Accessed April 10, 2021.
https://scholar.uwindsor.ca/etd/395.
MLA Handbook (7th Edition):
Moula, Golam. “Plasmon-Enhanced Raman and Resonance Raman Scattering and Single Molecule Detection in Langmuir-Blodgett Monolayers.” 2011. Web. 10 Apr 2021.
Vancouver:
Moula G. Plasmon-Enhanced Raman and Resonance Raman Scattering and Single Molecule Detection in Langmuir-Blodgett Monolayers. [Internet] [Doctoral dissertation]. University of Windsor; 2011. [cited 2021 Apr 10].
Available from: https://scholar.uwindsor.ca/etd/395.
Council of Science Editors:
Moula G. Plasmon-Enhanced Raman and Resonance Raman Scattering and Single Molecule Detection in Langmuir-Blodgett Monolayers. [Doctoral Dissertation]. University of Windsor; 2011. Available from: https://scholar.uwindsor.ca/etd/395
Virginia Tech
16.
Ramasubramanian, Gayathri.
Performance Characterization of USRPs.
Degree: MS, Electrical Engineering, 2014, Virginia Tech
URL: http://hdl.handle.net/10919/50815
► Software Defined Radios (SDRs) are systems in which components such as filters, modulators, demodulators, etc., typically implemented in hardware are instead implemented in software. Thus,…
(more)
▼ Software Defined Radios (SDRs) are systems in which components such as filters, modulators, demodulators, etc., typically implemented in hardware are instead implemented in software. Thus, SDR systems shift signal processing from analog to digital domain. The signal processing is performed in reconfigurable devices like General Purpose Processors (GPP) or Field Programmable Gate Arrays (FPGA). The resulting flexibility of SDR systems brings in many advantages to wireless communications such as improved interoperability, adaptation capability and more future-proof hardware.
Various prototype/laboratory friendly hardware are available such as Universal Software Radio Peripherals (USRPs), developed by Ettus Research, which in combination with software interfaces such as GNU Radio can be used to design and implement a Software Defined Radio(SDR) system. This has in turn enabled numerous research opportunities and advancements in field of wireless communication. However one major drawback of these simple USRP devices is that they are un-calibrated in terms of power or voltage and hence give the results in relative terms/counts. This poses a disadvantage in real world scenarios where parameters such as power measured in milliwatts or dBm, are used to design, implement, and test devices and systems and to collect and interpret experimental results. Lack of connectivity with these metrics leads to the USRP devices being confined to proof of concept implementation and demonstrations, and limits their utility for experimentation.
In this thesis an attempt has been made to calibrate the USRPN210 (with WBX daughter board) devices and derive some calibration factors that would help relate the experimental results obtained from the USRP and GNU Radio combination to real world metrics. This also makes the result-set clearer and easily understandable. Several experiments were conducted to understand and characterize the performance of the USRP under different conditions. Experiments such as determination of 1-dB compression point, Third order intercept point helped understand the linearity range of the device under transmitter and receiver operations. The 3rd order input intercept point for USRPN210 device with WBX board with calibration was found to be around 0.25 dBm, which is closer to the expected value of 0 dBm at 400 MHz. Amplitude and frequency stability tests over the operational frequency range of the daughter board helped to note if change in frequency produced any variation in the received or transmitted power. Also variation with respect to gain helped derive a reference table for transmitted power, which could be used in for future experiments. Conducting these experiments over a sample of 10 USRPs helped in obtaining standardized values and benchmarking them. The factors obtained were also used in some experiments like path loss modeling, position location estimation in order to determine their effectiveness and impact on such applications.
Although, these factors obtained may not be directly applicable to…
Advisors/Committee Members: Dietrich, Carl B. (committeechair), Reed, Jeffrey Hugh (committeechair), Godfrey, Joseph Richard (committee member), Yang, Yaling (committee member).
Subjects/Keywords: USRP; Calibration; Characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ramasubramanian, G. (2014). Performance Characterization of USRPs. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/50815
Chicago Manual of Style (16th Edition):
Ramasubramanian, Gayathri. “Performance Characterization of USRPs.” 2014. Masters Thesis, Virginia Tech. Accessed April 10, 2021.
http://hdl.handle.net/10919/50815.
MLA Handbook (7th Edition):
Ramasubramanian, Gayathri. “Performance Characterization of USRPs.” 2014. Web. 10 Apr 2021.
Vancouver:
Ramasubramanian G. Performance Characterization of USRPs. [Internet] [Masters thesis]. Virginia Tech; 2014. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/10919/50815.
Council of Science Editors:
Ramasubramanian G. Performance Characterization of USRPs. [Masters Thesis]. Virginia Tech; 2014. Available from: http://hdl.handle.net/10919/50815
University of Sydney
17.
Xu, Hanou.
Characterization and Simulation of Magnetorheological Elastomer Filled with Carbonyl Iron and NdFeB Particles under Uniaxial Tension, Compression, and Pure Shear modes
.
Degree: 2019, University of Sydney
URL: http://hdl.handle.net/2123/20731
► In recent decades, magnetorheological elastomer (MRE) has been widely used in engineering applications as vibration absorbers or isolators due to its field-dependent property. Thus, researches…
(more)
▼ In recent decades, magnetorheological elastomer (MRE) has been widely used in engineering applications as vibration absorbers or isolators due to its field-dependent property. Thus, researches on the correlations of the variables and MRE behaviors are increasingly needed. This study aims to characterize and simulate magnetorheological behavior of elastomer filled with carbonyl iron and NdFeB particles under uniaxial tension, compression, and pure shear modes. First, tensile tests were performed for both isotropic and anisotropic magnetorheological elastomer (MRE) with carbonyl iron particle (CI), under the magnetic field of a pair of permanent magnets, to observe the feasibility of a portable, lightweight setup without the need of power supply. It turned out that the MR effect was apparent but not significant enough for real application. Also, there was a negative MR effect for anisotropic MRE when the magnetic flux is vertical to the particle chains. The compression test showed that Neodymium magnet powder (NdFeB) filled specimen always had higher compressive strength than the CI specimen. The outcome helped to the complementation of hard particle MRE characterization. A systematic shear test was conducted on isotropic CI and NdFeB MRE specimens. The shear test was divided into two parts. The first part observed the large-strain behavior of each specimen under a steady magnetic flux; 0, 200, 400, and 600 mT magnetic flux was applied during this part. NdFeB MRE specimens showed very little change in shear strength under different flux, while CI MRE was influenced substantially. The second part is conducted under dynamic flux ranging from -600 mT to 600 mT with small oscillation displacement. It turned out the hard MRE specimens had far more significant storage modulus than its counterpart. The result of the shear test proved that hard MRE has lower magnetization saturation and high storage modulus, and it is now further characterized. COMSOL simulation for tensile testing showed fair agreement with the experimental outcomes. Further improvements were proposed to make the model practical for future MRE studies.
Subjects/Keywords: magnetorheological elastomer characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Xu, H. (2019). Characterization and Simulation of Magnetorheological Elastomer Filled with Carbonyl Iron and NdFeB Particles under Uniaxial Tension, Compression, and Pure Shear modes
. (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/20731
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Xu, Hanou. “Characterization and Simulation of Magnetorheological Elastomer Filled with Carbonyl Iron and NdFeB Particles under Uniaxial Tension, Compression, and Pure Shear modes
.” 2019. Thesis, University of Sydney. Accessed April 10, 2021.
http://hdl.handle.net/2123/20731.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Xu, Hanou. “Characterization and Simulation of Magnetorheological Elastomer Filled with Carbonyl Iron and NdFeB Particles under Uniaxial Tension, Compression, and Pure Shear modes
.” 2019. Web. 10 Apr 2021.
Vancouver:
Xu H. Characterization and Simulation of Magnetorheological Elastomer Filled with Carbonyl Iron and NdFeB Particles under Uniaxial Tension, Compression, and Pure Shear modes
. [Internet] [Thesis]. University of Sydney; 2019. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/2123/20731.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Xu H. Characterization and Simulation of Magnetorheological Elastomer Filled with Carbonyl Iron and NdFeB Particles under Uniaxial Tension, Compression, and Pure Shear modes
. [Thesis]. University of Sydney; 2019. Available from: http://hdl.handle.net/2123/20731
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Oklahoma
18.
SHAHRASHOOB, ZAHRA.
Sulfoxide Surfactants.
Degree: PhD, 2018, University of Oklahoma
URL: http://hdl.handle.net/11244/301334
► A novel group of nonionic surfactants, which we term ester sulfoxides, derived from 2-hydroxy-4-(methylthio) butyric acid are characterized in this thesis. The physico-chemical properties, equilibrium…
(more)
▼ A novel group of nonionic surfactants, which we term ester sulfoxides, derived from 2-hydroxy-4-(methylthio) butyric acid are characterized in this thesis. The physico-chemical properties, equilibrium and dynamic properties, and microemulsion behavior of these surfactants are investigated. Based on the physico-chemical properties, the sulfoxide nonionic surfactant molecules presented good surface activity, good foaming, wetting ability and laundry detergency performance. Equilibrium surface tensions were determined for a number of molecules. The Langmuir adsorption isotherm is satisfactory for describing the adsorption behavior of the sulfoxide surfactant at the air/water interface. Adsorption kinetics onto the air/water interface was studied for an ester sulfoxide molecule with 8 carbon atoms in the tail of the surfactant. Comparing the experimental dynamic surface tension profiles of the surfactant solutions with the diffusion-controlled kinetic model indicate that the adsorption of this surfactant molecule onto the air/water interface is diffusion-controlled for dilute solutions at 25°C. HLD parameters of longer-chain surfactants were obtained and compared to that of alcohol ethoxylates. Ester sulfoxides are much less temperature sensitive than alcohol ethoxylates, and have a temperature coefficient similar to that of ionic surfactants. The ester sulfoxide moiety was determined to be as hydrophilic as ~5 ethylene oxide units according to the Cc value of the HLD parameters.
Advisors/Committee Members: GRADY, BRIAN (advisor), SABATINI, DAVID (committee member), CROSSLEY, STEVEN (committee member), HARWELL, JEFFREY (committee member), O'REAR, EDGAR (committee member).
Subjects/Keywords: SULFOXIDE; SURFACTANTS; CHARACTERIZATION
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
SHAHRASHOOB, Z. (2018). Sulfoxide Surfactants. (Doctoral Dissertation). University of Oklahoma. Retrieved from http://hdl.handle.net/11244/301334
Chicago Manual of Style (16th Edition):
SHAHRASHOOB, ZAHRA. “Sulfoxide Surfactants.” 2018. Doctoral Dissertation, University of Oklahoma. Accessed April 10, 2021.
http://hdl.handle.net/11244/301334.
MLA Handbook (7th Edition):
SHAHRASHOOB, ZAHRA. “Sulfoxide Surfactants.” 2018. Web. 10 Apr 2021.
Vancouver:
SHAHRASHOOB Z. Sulfoxide Surfactants. [Internet] [Doctoral dissertation]. University of Oklahoma; 2018. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/11244/301334.
Council of Science Editors:
SHAHRASHOOB Z. Sulfoxide Surfactants. [Doctoral Dissertation]. University of Oklahoma; 2018. Available from: http://hdl.handle.net/11244/301334
Univerzitet u Beogradu
19.
Vučurović, Ana B., 1984-.
Diverzitet, biološka i molekularna karakterizacija virusa
tikava i epidemologija oboljenja u Srbiji.
Degree: Poljoprivredni fakultet, 2013, Univerzitet u Beogradu
URL: https://fedorabg.bg.ac.rs/fedora/get/o:6489/bdef:Content/get
► Biotehničke nauke - Fitopatologija / Biotechnical Science - Phytopathology
U periodu od 2007. do 2011. godine na 61 lokalitetu gajenja tikava u Srbiji utvrđeno je…
(more)
▼ Biotehničke nauke - Fitopatologija / Biotechnical
Science - Phytopathology
U periodu od 2007. do 2011. godine na 61 lokalitetu
gajenja tikava u Srbiji utvrđeno je stalno prisustvo virusa sa
visokim intenzitetom zaraze. Učestalost virusne zaraze se po
godinama mijenjala i kretala od 30-50% u 2007. godini, preko
izuzetno visokih 80% u epidemijskoj 2008. godini, da bi tokom
naredne dvije godine bila konstantna i kretala se oko 40%. U
posljednjoj godini ispitivanja zaraza je ponovo dostigla čak 60%.
Serološkim testiranjem 1100 uzoraka sakupljenih sa 19 vrsta, sorti
i varijeteta tikava detektovano je prisustvo tri virusa: virusa
žutog mozaika cukinija (Zucchini yellow mosaic virus, ZYMV), virusa
mozaika lubenice (Watermelon mosaic virus, WMV) i virusa mozaika
krastavca (Cucumber mosaic virus, CMV). Dodatnim testiranjem
simptomatičnih uzoraka detektovano je prisustvo virusa žutila
tikava perzistentno prenosivog vašima (Cucurbit aphid-borne yellows
virus, CABYV), što predstavlja prvi nalaz ovog virusa u Srbiji i
virusa bronzavosti paradajza (Tomato spotted wilt virus, TSWV), što
je prvi nalaz ovog virusa na tikvama u Srbiji, ali i prvi nalaz u
prirodnoj infekciji na Cucurbita maxima u svijetu. Najzastupljeniji
virus tokom pet godina ispitivanja bio je ZYMV. Tokom prve dvije
godine najčešće su bile detektovane miješane infekcije, a u
poslednje tri godine pojedinačne. U okviru ovih istraživanja
dokazano je prenošenje ZYMV sjemenom Cucurbita pepo var. styriaca,
C. maxima i C. moschata. Utvrđena je zaraženost jednogodišnjih i
višegodišnjih korovskih biljaka, koje su prisutne u vrijeme
zasnivanja usjeva tikava i u početnim fazama vegetacije, sa ZYMV,
WMV, CMV i TSWV. Najzastupljeniji je bio TSWV, a njegovo prisustvo
je dokazano u osam različitih korovskih vrsta, sljedeći po
zastupljenosti je bio CMV, dokazan u sedam vrsta korova, dok su
ZYMV i WMV bili slični po zastupljenosti, a dokazani su u pet,
odnosno četiri korovske vrste. Pokazan je visok diverzitet biljnih
vaši koje posjećuju usjeve tikava kroz determinaciju 57 taksona.
Najzastupljenije vrste vaši bile su Aphis fabae, Anoecia corni,
Aphis gossypii, Myzus persicae i Acyrthosiphon pisum. Najveći
diverzitet i najveća brojnost vrsta vaši bila je u prvim nedjeljama
po nicanju biljaka. Detekcija i identifikacija do nivoa vrste svih
prouzrokovača virusnih oboljenja na tikvama u Srbiji potvrđena je
primjenom RT-PCR metode i odgovarajućih specifičnih prajmera i
sekvencioniranjem. Fenotipska varijabilnost i krug domaćina za
ZYMV, WMV i CMV ispitivani su primjenom biotesta na ukupno 45 test
biljaka...
Advisors/Committee Members: Krstić, Branka, 1957-.
Subjects/Keywords: cucurbits; viruses; biological characterization;
serological characterization; molecular characterization;
epidemiology
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Vučurović, Ana B., 1. (2013). Diverzitet, biološka i molekularna karakterizacija virusa
tikava i epidemologija oboljenja u Srbiji. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:6489/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Vučurović, Ana B., 1984-. “Diverzitet, biološka i molekularna karakterizacija virusa
tikava i epidemologija oboljenja u Srbiji.” 2013. Thesis, Univerzitet u Beogradu. Accessed April 10, 2021.
https://fedorabg.bg.ac.rs/fedora/get/o:6489/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Vučurović, Ana B., 1984-. “Diverzitet, biološka i molekularna karakterizacija virusa
tikava i epidemologija oboljenja u Srbiji.” 2013. Web. 10 Apr 2021.
Vancouver:
Vučurović, Ana B. 1. Diverzitet, biološka i molekularna karakterizacija virusa
tikava i epidemologija oboljenja u Srbiji. [Internet] [Thesis]. Univerzitet u Beogradu; 2013. [cited 2021 Apr 10].
Available from: https://fedorabg.bg.ac.rs/fedora/get/o:6489/bdef:Content/get.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Vučurović, Ana B. 1. Diverzitet, biološka i molekularna karakterizacija virusa
tikava i epidemologija oboljenja u Srbiji. [Thesis]. Univerzitet u Beogradu; 2013. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:6489/bdef:Content/get
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Alberta
20.
Kumar, Ashutosh.
Characterization of Reservoir Fluids based on Perturbation
from n-Alkanes.
Degree: PhD, Department of Civil and Environmental
Engineering, 2016, University of Alberta
URL: https://era.library.ualberta.ca/files/c1831cj998
► Reliable design of gas and/or steam injection for enhanced oil recovery requires compositional reservoir simulation, in which phase behavior of reservoir fluids is represented by…
(more)
▼ Reliable design of gas and/or steam injection for
enhanced oil recovery requires compositional reservoir simulation,
in which phase behavior of reservoir fluids is represented by an
equation of state (EOS). Various methods for reservoir fluid
characterization using an EOS have been proposed in the literature.
Conventional characterization methods addressed the challenge of
the reliable prediction of the condensation/vaporization mechanisms
in gas injection processes. It is even more challenging to
characterize reservoir fluids for multiphase behavior consisting of
three hydrocarbon phases. Complex multiphase behavior was observed
experimentally for many gas floods. The importance of considering
multiphase behavior in gas flooding simulation was also
demonstrated in the literature. However, no systematic method has
been proposed, especially for three-phase characterization. The
main objective of this research is to develop a reliable method for
multiphase fluid characterization using an EOS. The Peng-Robinson
EOS is used with the van der Waals mixing rules in this research.
The fluid types considered are gas condensate, volatile oil, black
oil, heavy oil, and bitumen. The most important difference from the
conventional methods is that, in this research, reservoir fluids
are characterized by perturbation of the EOS model that has been
calibrated for n-alkanes, in the direction of increasing level of
aromaticity. This methodology is referred to as perturbation from
n-alkanes (PnA), and used consistently throughout the dissertation.
The experimental data required for the characterization methods
presented in this dissertation are the saturation pressure and
liquid densities at a given temperature, in addition to
compositional information. Other types of experimental data, such
as minimum miscibility pressures, liquid dropout curves, and
three-phase envelopes, are used to test the predictive capability
of the PR EOS models resulting from the PnA method. First, the PnA
method is applied to simpler phase behavior that involves only two
phases of vapor and liquid. The Peng-Robinson EOS is calibrated for
vapor pressures and liquid densities for n-alkanes from C7 to C100.
Two different characterization methods are developed for two-phase
characterization using the PnA method. In one of them, fluid
characterization is performed by adjusting critical pressure,
critical temperature, and acentric factor. In the other, fluids are
characterized by directly adjusting the attraction and covolume
parameters for each pseudocomponent. Then, the PnA method is
extended to three phases. Unlike for two phases, the Peng-Robinson
EOS is calibrated for three-phase data measured for
n-alkane/n-alkane and CO2/n-alkane binaries. A new set of binary
interaction parameters (BIPs) is developed for these binaries, and
applied for reservoir fluid characterization. The PnA method
applied for two and three phases results in three different methods
of fluid characterization. They are individually tested for many
different reservoir fluids to demonstrate…
Subjects/Keywords: Heavy Oil Characterization; Bitumen Characterization; Oil Characterization; Charcterization with PR EOS; Perturbation from n-Alkane; Multiphase Fluid Characterization; BIP for Multiphase Characterization; Gas Condensate Characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kumar, A. (2016). Characterization of Reservoir Fluids based on Perturbation
from n-Alkanes. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/c1831cj998
Chicago Manual of Style (16th Edition):
Kumar, Ashutosh. “Characterization of Reservoir Fluids based on Perturbation
from n-Alkanes.” 2016. Doctoral Dissertation, University of Alberta. Accessed April 10, 2021.
https://era.library.ualberta.ca/files/c1831cj998.
MLA Handbook (7th Edition):
Kumar, Ashutosh. “Characterization of Reservoir Fluids based on Perturbation
from n-Alkanes.” 2016. Web. 10 Apr 2021.
Vancouver:
Kumar A. Characterization of Reservoir Fluids based on Perturbation
from n-Alkanes. [Internet] [Doctoral dissertation]. University of Alberta; 2016. [cited 2021 Apr 10].
Available from: https://era.library.ualberta.ca/files/c1831cj998.
Council of Science Editors:
Kumar A. Characterization of Reservoir Fluids based on Perturbation
from n-Alkanes. [Doctoral Dissertation]. University of Alberta; 2016. Available from: https://era.library.ualberta.ca/files/c1831cj998
21.
Rose Leena Thomas; Dr. Sheenu Thomas.
Synthesis and characterization of Tellurium oxide glasses for photonic applications.
Degree: 2013, Cochin University of Science and Technology
URL: http://dyuthi.cusat.ac.in/purl/5119
► Tellurite glasses are photonic materials of special interest to the branch of optoelectronic and communication, due to its important optical properties such as high refractive…
(more)
▼ Tellurite glasses are photonic materials of special interest to the
branch of optoelectronic and communication, due to its important optical
properties such as high refractive index, broad IR transmittance, low phonon
energy etc. Tellurite glasses are solutions to the search of potential
candidates for nonlinear optical devices. Low phonon energy makes it an
efficient host for dopant ions like rare earths, allowing a better environment
for radiative transitions. The dopant ions maintain majority of their
individual properties in the glass matrix. Tellurites are less toxic than
chalcogenides, more chemically and thermally stable which makes them a
highly suitable fiber material for nonlinear applications in the midinfrared
and they are of increased research interest in applications like laser,
amplifier, sensor etc. Low melting point and glass transition temperature
helps tellurite glass preparation easier than other glass families.In order to probe into the versatility of tellurite glasses in optoelectronic
industry; we have synthesized and undertaken various optical studies on tellurite
glasses. We have proved that the highly nonlinear tellurite glasses are suitable
candidates in optical limiting, with comparatively lower optical limiting
threshold. Tuning the optical properties of glasses is an important factor in
the optoelectronic research. We have found that thermal poling is an
efficient mechanism in tuning the optical properties of these materials.
Another important nonlinear phenomenon found in zinc tellurite glasses is
their ability to switch from reverse saturable absorption to saturable
absorption in the presence of lanthanide ions. The proposed thesis to be
submitted will have seven chapters.
Subjects/Keywords: Tellurium oxide glasses; Oxide glasses; Glass preparation; Thermal characterization; Linear Optical characterization; Nonlinear optical characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Thomas, R. L. T. D. S. (2013). Synthesis and characterization of Tellurium oxide glasses for photonic applications. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/5119
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Thomas, Rose Leena Thomas; Dr. Sheenu. “Synthesis and characterization of Tellurium oxide glasses for photonic applications.” 2013. Thesis, Cochin University of Science and Technology. Accessed April 10, 2021.
http://dyuthi.cusat.ac.in/purl/5119.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Thomas, Rose Leena Thomas; Dr. Sheenu. “Synthesis and characterization of Tellurium oxide glasses for photonic applications.” 2013. Web. 10 Apr 2021.
Vancouver:
Thomas RLTDS. Synthesis and characterization of Tellurium oxide glasses for photonic applications. [Internet] [Thesis]. Cochin University of Science and Technology; 2013. [cited 2021 Apr 10].
Available from: http://dyuthi.cusat.ac.in/purl/5119.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Thomas RLTDS. Synthesis and characterization of Tellurium oxide glasses for photonic applications. [Thesis]. Cochin University of Science and Technology; 2013. Available from: http://dyuthi.cusat.ac.in/purl/5119
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
22.
Paul, Bhaskar.
Synthesis characterization and oxidation of mow and
mocrsi alloys; -.
Degree: Engineering Science, 2013, INFLIBNET
URL: http://shodhganga.inflibnet.ac.in/handle/10603/54654
Abstract available
Publication p.185 - 191
Advisors/Committee Members: Suri, A K.Subjects/Keywords: Characterization; Synthesis
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Paul, B. (2013). Synthesis characterization and oxidation of mow and
mocrsi alloys; -. (Thesis). INFLIBNET. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/54654
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Paul, Bhaskar. “Synthesis characterization and oxidation of mow and
mocrsi alloys; -.” 2013. Thesis, INFLIBNET. Accessed April 10, 2021.
http://shodhganga.inflibnet.ac.in/handle/10603/54654.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Paul, Bhaskar. “Synthesis characterization and oxidation of mow and
mocrsi alloys; -.” 2013. Web. 10 Apr 2021.
Vancouver:
Paul B. Synthesis characterization and oxidation of mow and
mocrsi alloys; -. [Internet] [Thesis]. INFLIBNET; 2013. [cited 2021 Apr 10].
Available from: http://shodhganga.inflibnet.ac.in/handle/10603/54654.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Paul B. Synthesis characterization and oxidation of mow and
mocrsi alloys; -. [Thesis]. INFLIBNET; 2013. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/54654
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
23.
Clancy, Carl.
Assessing The Utility of Passive Optical Polarimetric
Observations for the Characterization of Resident Space
Objects.
Degree: MSc (MS/Ma??trise ??s sciences), Physics/Physique, 2016, Royal Military College of Canada
URL: http://hdl.handle.net/11264/941
► The protection and management of valuable Earth orbits and operational satellites for military, commercial and research objectives is widely recognised as a task of urgency…
(more)
▼ The protection and management of valuable Earth orbits
and operational satellites for military, commercial and research
objectives is widely recognised as a task of urgency and
complexity. A critical component of this task is the tracking,
characterization and identification of these active satellites as
well as the space debris objects that pose a threat to them. As
such advances in methods and technologies to improve these
functions are constantly being investigated. One such broad method
being employed to enhance space situational awareness (SSA) is the
analysis of sunlight reflected from Earth-orbiting satellites.
There are a number of studies that have focussed on studying
variations in the intensity to learn more about a satellite???s
operational status and activity however there is very little
research on how the polarization of the reflected light could be
used to gain additional knowledge about the reflecting body. To
understand the utility of doing so as a means of characterizing
satellites and space debris objects, an experiment was designed and
conducted to gain insight into the trends of relative reflective
polarimetric behaviors of some common spacecraft construction
materials.
For this thesis, five material samples were studied:
two types of triple-junction photovoltaic cells, a bare 6061-T6
aluminum panel and a white-coated aluminum panel. The samples were
mounted on a goniometer in which the illumination and reflection
angles could be precisely controlled. The samples were then
illuminated with a collimated unpolarised white light meant to
simulate the Sun. The reflected light from the sample was then
analysed using a dichroic linear polariser and a charge-coupled
device (CCD) sensitive to optical wavelength light. From these
measurements, the Stokes parameters were determined and the degree
of linear polarisation and angle of polarisation calculated. The
resulting values were plotted to allow a qualitative assessment of
the trends in the polarimetric characteristics of each material
with respect to illumination and observation geometries.
The
findings from this research project yielded two significant
outcomes. First, the results provide a general understanding of how
the polarisation trends of the reflected light vary as the
illumination and observational geometry is changed. Second, the
polarisation trends differed between samples for a given
illumination and observational geometry. It can be concluded from
these results that studying the polarimetric characteristics of
light reflected from resident space objects can aid in their
characterization and ultimately contribute to the advancement of
gaining and maintaining SSA.
La protection et gestion d'orbites et de satellites
op??rationels ?? des fins militaires, commercialles, et de
recherche sont des t??ches reconnues comme ??tant urgentes et
complexes. Un ??l??ment essentiel de cette t??che est le suivi, la
caract??risation et l'identification de ces satellites ainsi que
les d??bris spatiaux qui constituent une menace pour eux. ?? ce
titre,…
Advisors/Committee Members: Royal Military College of Canada / Coll??ge militaire royal du Canada, B??dard, Donald, Wade, Gregg.
Subjects/Keywords: Space; Observations; Passive; Polarimetric; Characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Clancy, C. (2016). Assessing The Utility of Passive Optical Polarimetric
Observations for the Characterization of Resident Space
Objects. (Masters Thesis). Royal Military College of Canada. Retrieved from http://hdl.handle.net/11264/941
Chicago Manual of Style (16th Edition):
Clancy, Carl. “Assessing The Utility of Passive Optical Polarimetric
Observations for the Characterization of Resident Space
Objects.” 2016. Masters Thesis, Royal Military College of Canada. Accessed April 10, 2021.
http://hdl.handle.net/11264/941.
MLA Handbook (7th Edition):
Clancy, Carl. “Assessing The Utility of Passive Optical Polarimetric
Observations for the Characterization of Resident Space
Objects.” 2016. Web. 10 Apr 2021.
Vancouver:
Clancy C. Assessing The Utility of Passive Optical Polarimetric
Observations for the Characterization of Resident Space
Objects. [Internet] [Masters thesis]. Royal Military College of Canada; 2016. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/11264/941.
Council of Science Editors:
Clancy C. Assessing The Utility of Passive Optical Polarimetric
Observations for the Characterization of Resident Space
Objects. [Masters Thesis]. Royal Military College of Canada; 2016. Available from: http://hdl.handle.net/11264/941
24.
Mohan, Mothi Krishna.
Synthesis, Characterization and Applications of Modified TiO2 Systems.
Degree: 2014, Cochin University of Science and Technology
URL: http://dyuthi.cusat.ac.in/purl/4934
► This thesis is divided in to 9 chapters and deals with the modification of TiO2 for various applications include photocatalysis, thermal reaction, photovoltaics and non-linear…
(more)
▼ This thesis is divided in to 9 chapters and deals with the modification of TiO2 for various applications include photocatalysis, thermal reaction, photovoltaics and non-linear optics.
Chapter 1 involves a brief introduction of the topic of study. An introduction to the applications of modified titania systems in various fields are discussed concisely. Scope and objectives of the present work are also discussed in this chapter.
Chapter 2 explains the strategy adopted for the synthesis of metal, nonmetal
co-doped TiO2 systems. Hydrothermal technique was employed for the preparation of the co-doped TiO2 system, where Ti[OCH(CH3)2]4, urea and metal nitrates were used as the sources for TiO2, N and metals respectively. In all the co-doped systems, urea to Ti[OCH(CH3)2]4 was taken in a 1:1 molar ratio and varied the concentration of metals. Five different co-doped catalytic systems and for each catalysts, three versions were prepared by varying the concentration of metals. A brief explanation of physico-chemical techniques used for the characterization of the material was also presented in this chapter. This includes X-ray Diffraction
(XRD), Raman Spectroscopy, FTIR analysis, Thermo Gravimetric Analysis, Energy Dispersive X-ray Analysis (EDX), Scanning Electron Microscopy(SEM), UV-Visible Diffuse Reflectance Spectroscopy (UV-Vis DRS), Transmission Electron Microscopy (TEM), BET Surface Area Measurements and X-ray Photoelectron Spectroscopy (XPS).
Chapter 3 contains the results and discussion of characterization techniques used for analyzing the prepared systems. Characterization is an inevitable part of materials research. Determination of physico-chemical properties of the prepared materials using suitable characterization techniques is very crucial to find its exact field of application. It is clear from the XRD pattern that photocatalytically active anatase phase dominates in the calcined samples with peaks at 2θ values around 25.4°, 38°, 48.1°, 55.2° and 62.7° corresponding to (101), (004), (200), (211)
and (204) crystal planes (JCPDS 21-1272) respectively. But in the case of Pr-N-Ti sample, a new peak was observed at 2θ = 30.8° corresponding to the (121) plane of the polymorph brookite. There are no visible peaks corresponding to dopants, which may be due to their low concentration or it is an indication of the better dispersion of impurities in the TiO2. Crystallite size of the sample was calculated from Scherrer equation byusing full width at half maximum (FWHM) of the (101) peak of the anatase phase. Crystallite size of all the co-doped TiO2 was found to be
lower than that of bare TiO2 which indicates that the doping of metal ions having higher ionic radius into the lattice of TiO2 causes some lattice distortion which suppress the growth of TiO2 nanoparticles. The structural identity of the prepared system obtained from XRD pattern is further confirmed by Raman spectra measurements. Anatase has six Raman active modes. Band gap of the co-doped system was calculated using Kubelka-Munk equation and that was found to…
Subjects/Keywords: Synthesis; Characterization; Modified TiO2 Systems
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mohan, M. K. (2014). Synthesis, Characterization and Applications of Modified TiO2 Systems. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/4934
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Mohan, Mothi Krishna. “Synthesis, Characterization and Applications of Modified TiO2 Systems.” 2014. Thesis, Cochin University of Science and Technology. Accessed April 10, 2021.
http://dyuthi.cusat.ac.in/purl/4934.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Mohan, Mothi Krishna. “Synthesis, Characterization and Applications of Modified TiO2 Systems.” 2014. Web. 10 Apr 2021.
Vancouver:
Mohan MK. Synthesis, Characterization and Applications of Modified TiO2 Systems. [Internet] [Thesis]. Cochin University of Science and Technology; 2014. [cited 2021 Apr 10].
Available from: http://dyuthi.cusat.ac.in/purl/4934.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Mohan MK. Synthesis, Characterization and Applications of Modified TiO2 Systems. [Thesis]. Cochin University of Science and Technology; 2014. Available from: http://dyuthi.cusat.ac.in/purl/4934
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Carnegie Mellon University
25.
Kwon, Jonghan.
Electron Microscopy Based Characterization of Resistive Switches.
Degree: 2016, Carnegie Mellon University
URL: http://repository.cmu.edu/dissertations/701
► Random Access Memory (RRAM) has emerged as a leading candidate for nonvolatile memory storage. RRAM devices typically consist of a metal/insulator/metal (MIM) structure and exhibit…
(more)
▼ Random Access Memory (RRAM) has emerged as a leading candidate for nonvolatile memory storage. RRAM devices typically consist of a metal/insulator/metal (MIM) structure and exhibit switching of the device resistivity state (low-to-high, highto- low) by application of electrical bias. It is now widely accepted that shunting and rupturing of local conductive paths (filaments) directly determines the resistance state. The size and composition of these filaments are very much an open question, but are usually attributed to high local concentrations of oxygen vacancies. Although there has been a huge body of research conducted in this field, the fundamental nature of the conductive path and basic switching/failure mechanisms are still under debate. This is largely due to a lack of structural analysis of existing filament size and composition in actual devices. Since the non-volatile nature and device reliability issues (i.e. retention and endurance) are directly related to the irreversible structural transformations in the device, microstructural characterization is essential for eventual commercialization of RRAM. In this study, I investigated oxygen vacancy defect dynamics under electric filed essential for resistive switching and aim to identify size, location, and chemical nature of the conductive filaments in RRAM devices by using a variety of devices and materials characterization methods: in situ transmission electron microscopy (TEM), highresolution TEM (HRTEM), scanning TEM (STEM)-electron energy loss spectroscopy (EELS), electron holography, rapid thermal annealing (RTA), transient thermometry, and electro-thermal simulation. I adopt an in situ electrical biasing TEM technique to study microstructural changes occurring during resistive switching using a model TiO2-based RRAM device, and confirmed the device is switchable inside of the TEM column. I observed extension and contraction of {011} and {121}-type Wadsley defects, crystallographic shear faults, associated with resistive switching. More specifically, emission and adsorption of oxygen vacancies under different polarity of electrical biases at the fault bounding dislocations were identified. The motion of Wadsley defects was used to track oxygen vacancy migration under electric field. Also, the microstructural changes that occur when the device experiences low electric field (~104 V/cm) was reported, akin to read disturb. Crossbar type RRAM device stacks consisting of TiN/a-HfAlOx/Hf/TiN were investigated to estimate filament size, filament temperature, and its chemical footprint using HRTEM, transient thermometry and numerical simulation. In each of the switched devices, a single crystallite ~ 8-16 nm in size embedded in an amorphous HfAlOx matrix was found. The HfAlOx crystallization temperature (Tc) of 850 K was determined by combining RTA and HRTEM imaging. In parallel, the filament size has been determined by transient thermometry. The temperature profile extracted from these measurements suggested that the peak filament temperature was > 1500 K at…
Subjects/Keywords: characterization; electron microscopy; memory; RRAM
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Kwon, J. (2016). Electron Microscopy Based Characterization of Resistive Switches. (Thesis). Carnegie Mellon University. Retrieved from http://repository.cmu.edu/dissertations/701
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Kwon, Jonghan. “Electron Microscopy Based Characterization of Resistive Switches.” 2016. Thesis, Carnegie Mellon University. Accessed April 10, 2021.
http://repository.cmu.edu/dissertations/701.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Kwon, Jonghan. “Electron Microscopy Based Characterization of Resistive Switches.” 2016. Web. 10 Apr 2021.
Vancouver:
Kwon J. Electron Microscopy Based Characterization of Resistive Switches. [Internet] [Thesis]. Carnegie Mellon University; 2016. [cited 2021 Apr 10].
Available from: http://repository.cmu.edu/dissertations/701.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Kwon J. Electron Microscopy Based Characterization of Resistive Switches. [Thesis]. Carnegie Mellon University; 2016. Available from: http://repository.cmu.edu/dissertations/701
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Mississippi State University
26.
Subedi, Nava Raj.
Characterization of microparticles through digital holography.
Degree: PhD, Physics and Astronomy, 2016, Mississippi State University
URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10212016-111718/
;
► In this work, digital holography (DH) is extensively utilized to characterize microparticles. Here, characterization refers to the determination of a particles shape, size, and,…
(more)
▼ In this work, digital holography (DH) is extensively utilized to characterize microparticles. Here,
characterization refers to the determination of a particles shape, size, and, in some cases, its surface structure. A variety of microparticles, such as environmental dust, pollen, volcanic ash, clay, and biological samples, are thoroughly analyzed. In this technique, the microscopically fine interference pattern generated by the coherent superposition of an object and a reference wave fields is digitally recorded using an optoelectronic sensor, in the form of a hologram, and the desired particle property is then computationally extracted by performing a numerical reconstruction to form an image of the particle.
The objective of this work is to explore, develop, and demonstrate the feasibility of different experimental arrangements to reconstruct the image of various arbitrary-shaped particles. Both forward- and backward-scattering experimental arrangements are constructed and calibrated to quantify the size of several micron-sized particles. The performance and implications of the technique are validated using the National Institute of Standards and Technology (NIST)-traceable borosilicate glass microspheres of various diameters and a Thorlabs resolution plate. After successful validation and calibration of the system, the resolution limit of the experimental setup is estimated, which is ~10 microns. Particles smaller than 10 microns in size could not be imaged well enough to ensure that what appeared like a single particle was not in fact a cluster. The forward- and backward-scattering holograms of different samples are recorded simultaneously and images of the particles are then computationally reconstructed from these recorded holograms. Our results show that the forward- and backward-scattering images yield different information on the particle surface structure and edge roughness, and thus, reveal more information about a particle profile. This suggests that the two image perspectives reveal aspects of the particle structure not available from a more commonly used forward-scattering based image alone. The results of this work could be supportive to insight more on the particles morphology and subsequently important for the advancement of contact-free particle
characterization technique.
Advisors/Committee Members: Dr. Matthew J. Berg (chair), Dr. Chuji Wang (committee member), Dr. Donna M. Pierce (committee member), Dr. Yaroslav Koshka (committee member), Dr. Hendrik F. Arnoldus (committee member).
Subjects/Keywords: Particle characterization; Digital holographic microscopy
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Subedi, N. R. (2016). Characterization of microparticles through digital holography. (Doctoral Dissertation). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-10212016-111718/ ;
Chicago Manual of Style (16th Edition):
Subedi, Nava Raj. “Characterization of microparticles through digital holography.” 2016. Doctoral Dissertation, Mississippi State University. Accessed April 10, 2021.
http://sun.library.msstate.edu/ETD-db/theses/available/etd-10212016-111718/ ;.
MLA Handbook (7th Edition):
Subedi, Nava Raj. “Characterization of microparticles through digital holography.” 2016. Web. 10 Apr 2021.
Vancouver:
Subedi NR. Characterization of microparticles through digital holography. [Internet] [Doctoral dissertation]. Mississippi State University; 2016. [cited 2021 Apr 10].
Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10212016-111718/ ;.
Council of Science Editors:
Subedi NR. Characterization of microparticles through digital holography. [Doctoral Dissertation]. Mississippi State University; 2016. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-10212016-111718/ ;
University of Utah
27.
Tserendavga, Tsend-ayush.
Isolation and characterization of lost copper and molybdenum particles in the flotation tailings of kennecott copper porphyry ores.
Degree: PhD, Metallurgical Engineering, 2015, University of Utah
URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3841/rec/1439
► The importance of flotation separation has long been, and continues to be, an important technology for the mining industry, especially to metallurgical engineers. However, the…
(more)
▼ The importance of flotation separation has long been, and continues to be, an important technology for the mining industry, especially to metallurgical engineers. However, the flotation process is quite complex and expensive, in addition to being influenced by many variables. Understanding the variables affecting flotation efficiency and how valuable minerals are lost to the tailings gives metallurgists an advantage in their attempts to increase efficiency by designing operations to target the areas of greatest potential value. A successful, accurate evaluation of lost minerals in the tailings and appropriate solutions to improve flotation efficiency can save millions of dollars in the effective utilization of our mineral resources. In this dissertation research, an attempt has been made to understand the reasons for the loss of valuable mineral particles in the tailings from Kennecott Utah Copper ores. Possibilities include liberation, particle aggregation (slime coating) and surface chemistry issues associated with the flotation separation. This research generally consisted of three main aspects. The first part involved laboratory flotation experiments and factors, which affect the flotation efficiency. Results of flotation testing are reported that several factors such as mineral exposure/liberation and slime coating and surface oxidation strongly affect the flotation efficiency. The second part of this dissertation research was to develop a rapid scan dual energy (DE) methodology using 2D radiography to identify, isolate, and prepare lost sulfide mineral particles with the advantages of simple sample preparation, short analysis time, statistically reliable accuracy and confident identification. The third part of this dissertation research was concerned with detailed characterization of lost particles including such factors as liberation, slime coating, and surface chemistry characteristics using advanced analytical techniques and instruments. Based on the results from characterization, the extent to which these factors contribute to the loss of sulfide mineral particles in the tailings were determined.
Subjects/Keywords: flotation; grinding; mineral characterization; radiography
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tserendavga, T. (2015). Isolation and characterization of lost copper and molybdenum particles in the flotation tailings of kennecott copper porphyry ores. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3841/rec/1439
Chicago Manual of Style (16th Edition):
Tserendavga, Tsend-ayush. “Isolation and characterization of lost copper and molybdenum particles in the flotation tailings of kennecott copper porphyry ores.” 2015. Doctoral Dissertation, University of Utah. Accessed April 10, 2021.
http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3841/rec/1439.
MLA Handbook (7th Edition):
Tserendavga, Tsend-ayush. “Isolation and characterization of lost copper and molybdenum particles in the flotation tailings of kennecott copper porphyry ores.” 2015. Web. 10 Apr 2021.
Vancouver:
Tserendavga T. Isolation and characterization of lost copper and molybdenum particles in the flotation tailings of kennecott copper porphyry ores. [Internet] [Doctoral dissertation]. University of Utah; 2015. [cited 2021 Apr 10].
Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3841/rec/1439.
Council of Science Editors:
Tserendavga T. Isolation and characterization of lost copper and molybdenum particles in the flotation tailings of kennecott copper porphyry ores. [Doctoral Dissertation]. University of Utah; 2015. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3841/rec/1439
University of Alberta
28.
Khidir, Ahmed.
Diagenesis, Burial history, and Reservoir Characterization
of the Scollard sequence sandstones in Alberta.
Degree: PhD, Department of Earth and Atmospheric
Sciences, 2010, University of Alberta
URL: https://era.library.ualberta.ca/files/j098zc583
► A detailed laboratory study of sandstone samples from outcrops and conventional core samples from the Maastrichtian-Paleocene Scollard-age fluvial strata in the Western Canada foredeep was…
(more)
▼ A detailed laboratory study of sandstone samples from
outcrops and conventional core samples from the
Maastrichtian-Paleocene Scollard-age fluvial strata in the Western
Canada foredeep was undertaken to investigate the reservoir
characteristics, burial depth history, and sandstone diagenesis.
The sandstones are predominantly litharenites and sublitharenites,
which accumulated in a variety of fluvial environments. The
porosity of the sandstones is both syn-depositional and diagenetic
in origin. The potential of a sandstone to serve as a reservoir for
producible hydrocarbons is strongly related to the sandstone’s
diagenetic history. Detailed study of the distribution of
authigenic minerals of the Scollard sequence suggests that the
diversities in the pattern distribution of authigenic clay minerals
in the regions are not random but they coincide with the burial
depth of these strata and has a well-defined relation to the
sequence stratigraphic framework The general absence of dickite,
coupled with limited conversion of smectite into illite in the
Scollard sandstones, suggests crystallization at a depth less than
1.5 km. In contrast, the occurrence of blocky dickite, fibrous
illite and chlorite in the Coalspur and Willow Creek sandstones,
coupled with albitized feldspars and quartz cement, suggests that
sandstones there underwent a maximum burial depth greater than 3
km. It has been observed that kaolin mineral content increases in
sandstones lying below subaerial unconformities, which mark the
most significant stratigraphic hiatuses and hence the sequence
boundaries in fully fluvial successions. This study demonstrates
the effects of burial depth and paleoclimate on pore-water
chemistry, which in turn, influenced the mineralogy and the
distributions of authigenic minerals in the sandstones. The δ13C
and δ18O compositions of pedogenic carbonate nodules from the
Willow Creek Formation associated with the red shale host sediments
have been used as a paleoclimate and paleoenvironmental proxy. The
isotopic composition of nodules suggests that these formed during
drier conditions when C3 vegetation prevailed at the site. The
predominance of smectite and illite in fines and the poor floral
content point to a low seasonal rainfall in a semi-arid climatic
environment.
Subjects/Keywords: Diagenesis, Burial history, Reservoir
Characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Khidir, A. (2010). Diagenesis, Burial history, and Reservoir Characterization
of the Scollard sequence sandstones in Alberta. (Doctoral Dissertation). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/j098zc583
Chicago Manual of Style (16th Edition):
Khidir, Ahmed. “Diagenesis, Burial history, and Reservoir Characterization
of the Scollard sequence sandstones in Alberta.” 2010. Doctoral Dissertation, University of Alberta. Accessed April 10, 2021.
https://era.library.ualberta.ca/files/j098zc583.
MLA Handbook (7th Edition):
Khidir, Ahmed. “Diagenesis, Burial history, and Reservoir Characterization
of the Scollard sequence sandstones in Alberta.” 2010. Web. 10 Apr 2021.
Vancouver:
Khidir A. Diagenesis, Burial history, and Reservoir Characterization
of the Scollard sequence sandstones in Alberta. [Internet] [Doctoral dissertation]. University of Alberta; 2010. [cited 2021 Apr 10].
Available from: https://era.library.ualberta.ca/files/j098zc583.
Council of Science Editors:
Khidir A. Diagenesis, Burial history, and Reservoir Characterization
of the Scollard sequence sandstones in Alberta. [Doctoral Dissertation]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/j098zc583
Cornell University
29.
Jirapatnakul, Artit.
Computer Methods For Pulmonary Nodule Characterization From Ct Images.
Degree: M.S., Electrical Engineering, Electrical Engineering, 2011, Cornell University
URL: http://hdl.handle.net/1813/29192
► Computed tomography (CT) scans provide radiologists a non-invasive method of imaging internal structures of the body. Although CT scans have enabled the earlier detection of…
(more)
▼ Computed tomography (CT) scans provide radiologists a non-invasive method of imaging internal structures of the body. Although CT scans have enabled the earlier detection of suspicious nodules, these nodules are often small and difficult to accurately classify for radiologists. An automated system was developed to classify a pulmonary nodule based on image features extracted from a single CT scan. Several critical issues related to performance evaluation of such systems were also examined. The image features considered in the system were: statistics from the density distribution, shape, curvature, and boundary features. The shape and density features were computed through moment analysis of the segmented nodule. Local curvature was computed from a triangle-tessellated surface of the nodule; the statistics of the distribution of curvatures were used as features in the system. Finally, the boundary of the nodule was examined to quantify the transition region between the nodule and lung parenchyma. This was accomplished by combining the grayscale information and 3D model to measure the gradient on the surface of the nodule. These methods resulted in a total of 43 features. For compari- son, 2D features were computed for the density and shape features, resulting in 26 features. Four feature classification schemes were evaluated: logistic regression, k-nearest-neighbors, distance-weighted nearest-neighbors, and support vector machines (SVM). These features and classifiers were validated on a large dataset of 259 nodules. The best performance, an area under the ROC curve (AUC) of 0.702, was achieved using 3D features and the logistic regression classifier. A major consideration when evaluating a nodule classification system is whether the system presents an improvement over a baseline performance. Since the majority of large nodules in many datasets are malignant, the impact of nodule size on the performance of the classification system was examined. This was accomplished by comparing the performance of the system with feature sets that included sizedependent features to feature sets that excluded those features.The performance of size alone, estimated using a size-threshold classifier, was an AUC of 0.653. For the SVM classifier, removing size-dependent features reduced the performance from an AUC of 0.69 to 0.61. To approximate the performance that might be obtained on a dataset without a size bias, a subset of cases was selected where the benign and malignant nodules were of similar sizes. On this subset, size was not a very powerful feature with an AUC of 0.507, and features that were not dependent on size performed better than size-dependent features for SVM, with an AUC of 0.63 compared to 0.52. While other methods have been proposed for performing nodule classification, this is the first study to comprehensively look at the performance impact from datasets with nodules that exhibit a bias in size.
Advisors/Committee Members: Reeves, Anthony P (chair), Doerschuk, Peter (committee member).
Subjects/Keywords: pulmonary nodule; characterization; lung cancer
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Jirapatnakul, A. (2011). Computer Methods For Pulmonary Nodule Characterization From Ct Images. (Masters Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/29192
Chicago Manual of Style (16th Edition):
Jirapatnakul, Artit. “Computer Methods For Pulmonary Nodule Characterization From Ct Images.” 2011. Masters Thesis, Cornell University. Accessed April 10, 2021.
http://hdl.handle.net/1813/29192.
MLA Handbook (7th Edition):
Jirapatnakul, Artit. “Computer Methods For Pulmonary Nodule Characterization From Ct Images.” 2011. Web. 10 Apr 2021.
Vancouver:
Jirapatnakul A. Computer Methods For Pulmonary Nodule Characterization From Ct Images. [Internet] [Masters thesis]. Cornell University; 2011. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/1813/29192.
Council of Science Editors:
Jirapatnakul A. Computer Methods For Pulmonary Nodule Characterization From Ct Images. [Masters Thesis]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/29192
Cornell University
30.
Saleh, Lina.
Material Characterization Of Natural Adobe Plasters In The Jordan Valley: Mining The Past For A More Sustainable Future.
Degree: MA, Design, 2015, Cornell University
URL: http://hdl.handle.net/1813/40971
► Earthen buildings are inhabited by 30% of the world population; half of which are in developing countries. The techniques of earth building are widely practiced…
(more)
▼ Earthen buildings are inhabited by 30% of the world population; half of which are in developing countries. The techniques of earth building are widely practiced but the mechanics of earthen materials are poorly understood. As vernacular knowledge of this practice is being lost with globalization, so to are the environmental, social, and historic benefits that this technology provides. Nowhere is this more evident than in the Jordan Valley, known as having the oldest continuously inhabited human settlements, has remnants of adobe buildings that have proven durable throughout thousands of years. However, the development of the know-how to build with adobe was limited by the introduction of cement based construction materials to the region. To date, there have been no scientific inquiries into characterizing this important material. The goal of this study is to focus on the material aspects of the natural adobe plasters by using nanotechnology including Air Scanning Electron Microscopy (AirSEM), Energydispersive X-ray spectroscopy (EDX), and X-ray Diffraction (XRD). The underlying hypothesis is that these complimentary techniques will help better understand the morphology of the ancient adobe plaster that has been used throughout different eras in the Jordan Valley, where, the use of multiple nanocharacterization tools overcomes the limitations of a single tool. The results showed a significant variance in the plaster recipes in different geographical regions of the Jordan Valley. Some additives might have been added to the local soil, like talc that was found in the sample of Hisham's palace, or local soil differences could account for the differences. Finally, the results prove that regardless of the local recipes, people of the Jordan Valley used three different layers in the protection of the exterior walls, each having different ratios of earth materials.
Advisors/Committee Members: Elliott,John Jack R. (chair), Muller,David Anthony (committee member).
Subjects/Keywords: Plasters; Jordan Valley; Characterization
Record Details
Similar Records
Cite
Share »
Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Saleh, L. (2015). Material Characterization Of Natural Adobe Plasters In The Jordan Valley: Mining The Past For A More Sustainable Future. (Masters Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/40971
Chicago Manual of Style (16th Edition):
Saleh, Lina. “Material Characterization Of Natural Adobe Plasters In The Jordan Valley: Mining The Past For A More Sustainable Future.” 2015. Masters Thesis, Cornell University. Accessed April 10, 2021.
http://hdl.handle.net/1813/40971.
MLA Handbook (7th Edition):
Saleh, Lina. “Material Characterization Of Natural Adobe Plasters In The Jordan Valley: Mining The Past For A More Sustainable Future.” 2015. Web. 10 Apr 2021.
Vancouver:
Saleh L. Material Characterization Of Natural Adobe Plasters In The Jordan Valley: Mining The Past For A More Sustainable Future. [Internet] [Masters thesis]. Cornell University; 2015. [cited 2021 Apr 10].
Available from: http://hdl.handle.net/1813/40971.
Council of Science Editors:
Saleh L. Material Characterization Of Natural Adobe Plasters In The Jordan Valley: Mining The Past For A More Sustainable Future. [Masters Thesis]. Cornell University; 2015. Available from: http://hdl.handle.net/1813/40971
◁ [1] [2] [3] [4] [5] … [199] ▶
. 
Open Access Theses and Dissertations