You searched for subject:( brush).
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University of Georgia
1.
Yamamoto, Kenneth Kenji.
Creating block copolymers via surface-initiated ring-opening metathesis polymerization.
Degree: BSChem, Chemistry, 2009, University of Georgia
URL: http://purl.galileo.usg.edu/uga_etd/yamamoto_kenneth_k_200905_bschem 
► A method for the formation of norbornene (Nb) and furan-maleic anhydride (FMA) homopolymers, as well as Nb-FMA and FMA-Nb block copolymers grafted from oxide surfaces…
(more)
▼ A method for the formation of norbornene (Nb) and furan-maleic anhydride (FMA) homopolymers, as well as Nb-FMA and FMA-Nb block copolymers grafted from oxide surfaces was devised using surface-initiated ring-opening metathesis polymerization (SI-ROMP) from a 7-octenyltrichlorosilane (7-OCT) self-assembled monolayers (SAMs) with first generation Grubbs catalyst. Polymer film growth, as monitored by ellipsometry and visualized by atomic force microscopy (AFM), is strongly influenced by monomer structure and concentration, as well as reaction time and temperature. End-functionalization of growing polymer chains occurs through cross-metathesis vinyl containing moieties was demonstrated and confirmed using static water contact angle measurements. Other than introducing chemical functionality into polymeric coating through monomer design, end-functionalization of grafted polymer chains provides a route to tailor functionality into polymer coatings at lower concentrations and is another technique useful for altering surface energy and wettability.
Advisors/Committee Members: Jason Locklin.
Subjects/Keywords: polymer brush
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APA (6th Edition):
Yamamoto, K. K. (2009). Creating block copolymers via surface-initiated ring-opening metathesis polymerization. (Thesis). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/yamamoto_kenneth_k_200905_bschem
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):
Yamamoto, Kenneth Kenji. “Creating block copolymers via surface-initiated ring-opening metathesis polymerization.” 2009. Thesis, University of Georgia. Accessed December 06, 2019.
http://purl.galileo.usg.edu/uga_etd/yamamoto_kenneth_k_200905_bschem.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Yamamoto, Kenneth Kenji. “Creating block copolymers via surface-initiated ring-opening metathesis polymerization.” 2009. Web. 06 Dec 2019.
Vancouver:
Yamamoto KK. Creating block copolymers via surface-initiated ring-opening metathesis polymerization. [Internet] [Thesis]. University of Georgia; 2009. [cited 2019 Dec 06].
Available from: http://purl.galileo.usg.edu/uga_etd/yamamoto_kenneth_k_200905_bschem.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Yamamoto KK. Creating block copolymers via surface-initiated ring-opening metathesis polymerization. [Thesis]. University of Georgia; 2009. Available from: http://purl.galileo.usg.edu/uga_etd/yamamoto_kenneth_k_200905_bschem
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
2.
Alderfer, Jean Marie.
A taxonomic study of bitterbrush (Purshia tridentata (Pursh) DC.) in Oregon.
Degree: MS, Rangeland Resources, 1976, Oregon State University
URL: http://hdl.handle.net/1957/13492
► Extensive morphological and growth habit variations have been reported for bitterbrush (Purshia tridentata), a widespread western shrub frequently used in range revegetation projects. Hybridization of…
(more)
▼ Extensive morphological and growth habit variations have been
reported for bitterbrush (Purshia tridentata), a widespread western
shrub frequently used in range revegetation projects. Hybridization
of this species occurs with cliffrose (Cowania stansburiana) at the
point of their overlapping range in Utah and is believed to be
responsible for expression of certain bitterbrush attributes.
The objectives of this study were to investigate specific morphological
and physiological characteristics of bitterbrush over a portion
of its geographical range and to determine which, if any, of the variations
could be attributed to selective forces of particular habitats.
Twenty-nine populations of bitterbrush in eastern Oregon and
three populations in northern California were selected for study to
account for maximum variation in associated veget3tion, environmental
parameters, and morphological expression. Field studies
were conducted to examine taxonomic and growth habit characteristics
of each population and for use in population comparisons.
Seed germination studies indicated that the slight variations in
population response to nine time treatments in a 3% thiourea solution
essentially disappeared with a 15-20 minute treatment. Longer
treatments resulted in deformed radicles which failed to elongate.
Size and shape of leaves and growth form responses from seedlings
grown in the greenhouse compared favorably to the parent populations.
Pubsecence and glandulation also appeared to be primarily
genetically induced and were expressed early in seedling growth.
Cluster analysis indicated that many populations studied tended
to build up integrated morphological patterns or seed, leaf, color,
growth form, and habit attributes, However, the nearly continuous
gene-flow in this out-breeding shrub resulted in extensive overlapping
morphology between populations which is in accordance with the nature
of clinal variations.
Trends for gene flows were followed in northeastern Oregon and
along the eastern front of the Cascades with ecotypes forming where
environmental conditions created unique habitats. Under lodge pole
pine (Pinus contorta) on pumice soils, a low, layering ecotype was
identified which retained small, glabrous leaves, heavy glandulation,
and a low growth habit under common greenhouse conditions. An
ecotype similar in habit but varying in leaf shape, seed size, and bark color was found on harsh sites at the Hart Mountain Antelope Refuge.
Tall, massive plants growing on deep soils in northern California near
Janesville and in northeastern Oregon near Durkee represented two
additional ecotypes which showed differentiation in seed and leaf
characteristics for their respective populations.
Paper chromatography for flavonoid compounds gave complex
spot patterns which indicated possible addition of cliffrose genes in
certain populations. Although morphological characteristics associated
with specific patterns were not found on an individual plant
basis, two major patterns of similarity…
Advisors/Committee Members: Winward, Alma H. (advisor), Chambers, Kenton L. (committee member).
Subjects/Keywords: Brush
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APA (6th Edition):
Alderfer, J. M. (1976). A taxonomic study of bitterbrush (Purshia tridentata (Pursh) DC.) in Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/13492
Chicago Manual of Style (16th Edition):
Alderfer, Jean Marie. “A taxonomic study of bitterbrush (Purshia tridentata (Pursh) DC.) in Oregon.” 1976. Masters Thesis, Oregon State University. Accessed December 06, 2019.
http://hdl.handle.net/1957/13492.
MLA Handbook (7th Edition):
Alderfer, Jean Marie. “A taxonomic study of bitterbrush (Purshia tridentata (Pursh) DC.) in Oregon.” 1976. Web. 06 Dec 2019.
Vancouver:
Alderfer JM. A taxonomic study of bitterbrush (Purshia tridentata (Pursh) DC.) in Oregon. [Internet] [Masters thesis]. Oregon State University; 1976. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1957/13492.
Council of Science Editors:
Alderfer JM. A taxonomic study of bitterbrush (Purshia tridentata (Pursh) DC.) in Oregon. [Masters Thesis]. Oregon State University; 1976. Available from: http://hdl.handle.net/1957/13492
Oregon State University
3.
Sanga, Sabhasri.
Invasion of brush species into small stand openings in the Douglas-fir forests of the Willamette foothills.
Degree: MS, Forestry, 1958, Oregon State University
URL: http://hdl.handle.net/1957/16217
Subjects/Keywords: Brush
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APA (6th Edition):
Sanga, S. (1958). Invasion of brush species into small stand openings in the Douglas-fir forests of the Willamette foothills. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/16217
Chicago Manual of Style (16th Edition):
Sanga, Sabhasri. “Invasion of brush species into small stand openings in the Douglas-fir forests of the Willamette foothills.” 1958. Masters Thesis, Oregon State University. Accessed December 06, 2019.
http://hdl.handle.net/1957/16217.
MLA Handbook (7th Edition):
Sanga, Sabhasri. “Invasion of brush species into small stand openings in the Douglas-fir forests of the Willamette foothills.” 1958. Web. 06 Dec 2019.
Vancouver:
Sanga S. Invasion of brush species into small stand openings in the Douglas-fir forests of the Willamette foothills. [Internet] [Masters thesis]. Oregon State University; 1958. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1957/16217.
Council of Science Editors:
Sanga S. Invasion of brush species into small stand openings in the Douglas-fir forests of the Willamette foothills. [Masters Thesis]. Oregon State University; 1958. Available from: http://hdl.handle.net/1957/16217
Texas A&M University
4.
Van Liew, Dustin Bruce.
Economic feasibility and risk of using prescribed extreme fire as an invasive brush management tool in Texas.
Degree: 2009, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-1405
► This component of the Conservation Innovation Grants Summer Burning project evaluates the economic feasibility of using prescribed fire that exceeds the current Natural Resource Conservation…
(more)
▼ This component of the Conservation Innovation Grants Summer Burning project evaluates the economic feasibility of using prescribed fire that exceeds the current Natural Resource Conservation Service (NRCS) technical standards as a rangeland restoration practice on privately owned land in Texas. This study has four objectives: (1) Evaluate the economic effectiveness of using prescribed extreme burns as a rangeland restoration tool compared to other rangeland restoration strategies. (2) Provide economic research results that will facilitate a review of the technical standards, specification, and potential policy changes by the NRCS with respect to the use of prescribed extreme burning. (3) Assess economic effects of extreme fire when used in combination with other treatment practices over a 20 year planning horizon. (4) Through modeling, forecasting, and simulation assess the risk associated with the use of extreme prescribed fire, with respect to weather (rainfall) conditions. The research covers four contiguous counties in each of three eco-regions in Texas: Rolling Plains, Edwards Plateau, and the South Texas Plains. Focus group meetings with landowners and NRCS/Extension personnel were held in each region to obtain preliminary information including common rangeland uses, most problematic invasive
brush species, and the most commonly used treatment methods and associated costs. The primary invasive species in each region include: Rolling Plains ? Prickly Pear (Opuntia phaecantha); Edwards Plateau ? Redberry and Ashe Juniper (Juniperus ashei Buchh. And J. pinchotii Sudw., respectively); South Texas Plains ? Huisache (Acacia smallii Isely). Mesquite (Prosopis glandulsa Torr.) was identified as a common invasive
brush species across all three regions. When extreme fire was compared to the most commonly used invasive
brush treatments, assuming the treatment was instituted in year one, it was economically superior in all cases and feasible (Net Present Value > 0 and Benefit/Cost Ratio >1) in all but two cases. The inclusion of forecasted rainfall figures with the combination of using the most commonly used
brush treatment with extreme fire proved to substantially reduce the risk of instituting the treatment regimes. The probability distribution of NPVs was significantly smaller when treatment practices were spread over ten years and parcels than when treatment was restricted to the first year and whole ranch.
Advisors/Committee Members: Conner, J Richard (advisor), Anderson, David P. (committee member), Kreuter, Urs P. (committee member).
Subjects/Keywords: Extreme Fire; Brush; Mesquite; Juniper
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APA (6th Edition):
Van Liew, D. B. (2009). Economic feasibility and risk of using prescribed extreme fire as an invasive brush management tool in Texas. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1405
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):
Van Liew, Dustin Bruce. “Economic feasibility and risk of using prescribed extreme fire as an invasive brush management tool in Texas.” 2009. Thesis, Texas A&M University. Accessed December 06, 2019.
http://hdl.handle.net/1969.1/ETD-TAMU-1405.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Van Liew, Dustin Bruce. “Economic feasibility and risk of using prescribed extreme fire as an invasive brush management tool in Texas.” 2009. Web. 06 Dec 2019.
Vancouver:
Van Liew DB. Economic feasibility and risk of using prescribed extreme fire as an invasive brush management tool in Texas. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1405.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Van Liew DB. Economic feasibility and risk of using prescribed extreme fire as an invasive brush management tool in Texas. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1405
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Oregon State University
5.
Chapman, Joseph A.
Orientation and homing of the brush rabbit.
Degree: PhD, Wildlife Management, 1970, Oregon State University
URL: http://hdl.handle.net/1957/17945
► A study of orientation and homing in brush rabbits, Sylvilagus bachmani ubericolor (Miller), was conducted on the E. E. Wilson Game Management Area 7 miles…
(more)
▼ A study of orientation and homing in
brush rabbits, Sylvilagus
bachmani ubericolor (Miller), was conducted on the E. E. Wilson
Game Management Area 7 miles north of Corvallis, Oregon, between
July 1967 and April 1969. Sixty-seven individual rabbits were fitted
with radio-transmitters and returned to the field. Home ranges were
determined for 59 of these rabbits.
Brush rabbits rarely left brushy
cover. The home ranges of males were larger than those of females
and the home ranges of juvenile males were larger than those of
adult males.
Nineteen of the 59
brush rabbits whose home ranges were determined
were displaced in 29 homing experiments. No rabbit was
displaced more than twice.
Brush rabbits homed successfully in 15
of the 29 experiments.
Brush rabbits did not "home" over distances
as great as those reported for other members of the genus or other
small mammals. Homing success was not inversely related to distance displaced as has been reported for other small mammals.
Rather, there was a distinct limit at about 600 feet beyond which no
rabbit homed. Random movements could not have accounted for the
high percentage of rabbits that homed. Therefore, it was concluded
that
brush rabbit homing ability was characteristic of oriented movements.
Rabbits required as long as 36 days to complete a successful
homing experiment. A direct correlation was found between homing
time and distance displaced. This correlation was even higher when
the size of the rabbit's standard range was considered. It was concluded
that
brush rabbit homing ability was related to the size of the
home range.
With one exception
brush rabbits chose clear nights to "home"
indicating that sight was a primary mechanism involved in homing.
There was no correlation between season of the year and homing
ability, or between homing ability and sex or age. There was no
relationship between initial movements and compass direction or direction
of the home range. However, a significant number of rabbits
left the release box in the direction of the nearest cover.
Brush
rabbits also restricted their routes of travel to brushy cover while
attempting to "home." Four factors were found which interfered
with homing: (1) inter-specific aggressive behavior, (2) roads, (3)
human and vehicular activity, and (4) predators.
Brush rabbit home
ranges after first displacements were significantly smaller than original home ranges. However, home ranges after second displacements
were not smaller. The unusual movements of two rabbits are
discussed.
Advisors/Committee Members: Verts, B. J. (advisor).
Subjects/Keywords: Brush rabbits
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APA (6th Edition):
Chapman, J. A. (1970). Orientation and homing of the brush rabbit. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/17945
Chicago Manual of Style (16th Edition):
Chapman, Joseph A. “Orientation and homing of the brush rabbit.” 1970. Doctoral Dissertation, Oregon State University. Accessed December 06, 2019.
http://hdl.handle.net/1957/17945.
MLA Handbook (7th Edition):
Chapman, Joseph A. “Orientation and homing of the brush rabbit.” 1970. Web. 06 Dec 2019.
Vancouver:
Chapman JA. Orientation and homing of the brush rabbit. [Internet] [Doctoral dissertation]. Oregon State University; 1970. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1957/17945.
Council of Science Editors:
Chapman JA. Orientation and homing of the brush rabbit. [Doctoral Dissertation]. Oregon State University; 1970. Available from: http://hdl.handle.net/1957/17945
Georgia Tech
6.
Wei, Wenbin.
GENERATING ENZYME-SYNTHESIZED HYALURONAN BRUSHES: CHARACTERIZATION, LENGTH REGULATION AND APPLICATIONS.
Degree: PhD, Physics, 2018, Georgia Tech
URL: http://hdl.handle.net/1853/61601
► Polymer brushes are tethered polymers at an interface with a high grafting density. Polymer brushes have rich physics phenomena and wide applications. We developed a…
(more)
▼ Polymer brushes are tethered polymers at an interface with a high grafting density. Polymer brushes have rich physics phenomena and wide applications. We developed a distinct class of polymer
brush which increased the typical length scale of polymer
brush thickness by an order of magnitude, from less than a few hundred nanometers100 nm to ten microns. Hyaluronan polymers were polymerized and extruded by the enzyme hyaluronan synthase, which was densely coated on a surface. The resultant hyaluronan
brush can be visualized using optical microscopy which makes them a unique tool to study the physics of polymer brushes in ways previously never accessible. We developed a toolkit to study the interactions between the hyaluronan
brush and proteins, nanoparticles, bacteria and mammalian cells. We found the hyaluronan polymers, not the enzymes, serve as the memory of the length regulation mechanism which may result in longer polymers detaching at a faster rate than shorter polymers. In addition to the rich physics in the system, hyaluronan brushes are a promising biomaterial. Hyaluronan is an important and abundant biological polymer as an adult carries 12-15 g hyaluronan, 1/3 of which is degraded and synthesized every day. In testing its potential in the application of implants, we found the
brush allowed normal attachment and proliferation of mammalian fibroblast cells but that blocks a strain of bacteria which is the most frequent pathogen associated with implants for at least two weeks. Our initial and most ambitious goal was to test the hypothesis that polymer physics provides a length-dependent tension on the enzyme-bound polymers. This would be a natural explanation of the length-dependent detachment rates observed. Although this ultimate goal is still under pursuit, we have established an excellent platform to address the question and in the process, opened unexpected but valuable avenues of research in polymer physics, cell biophysics, and antimicrobial biomaterials.
Advisors/Committee Members: Curtis, Jennifer E (advisor), Gumbart, James C (advisor), Kim, Harold D (advisor), Brettmann, Blair K (advisor), Temenoff, Johnna S (committee member).
Subjects/Keywords: hyaluronan; brush; interface; hyaluronan synthase
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APA ·
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APA (6th Edition):
Wei, W. (2018). GENERATING ENZYME-SYNTHESIZED HYALURONAN BRUSHES: CHARACTERIZATION, LENGTH REGULATION AND APPLICATIONS. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/61601
Chicago Manual of Style (16th Edition):
Wei, Wenbin. “GENERATING ENZYME-SYNTHESIZED HYALURONAN BRUSHES: CHARACTERIZATION, LENGTH REGULATION AND APPLICATIONS.” 2018. Doctoral Dissertation, Georgia Tech. Accessed December 06, 2019.
http://hdl.handle.net/1853/61601.
MLA Handbook (7th Edition):
Wei, Wenbin. “GENERATING ENZYME-SYNTHESIZED HYALURONAN BRUSHES: CHARACTERIZATION, LENGTH REGULATION AND APPLICATIONS.” 2018. Web. 06 Dec 2019.
Vancouver:
Wei W. GENERATING ENZYME-SYNTHESIZED HYALURONAN BRUSHES: CHARACTERIZATION, LENGTH REGULATION AND APPLICATIONS. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1853/61601.
Council of Science Editors:
Wei W. GENERATING ENZYME-SYNTHESIZED HYALURONAN BRUSHES: CHARACTERIZATION, LENGTH REGULATION AND APPLICATIONS. [Doctoral Dissertation]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/61601
Texas A&M University
7.
Ashton, Zachary.
High Temperature Leakage Performance of a Hybrid Brush Seal Compared to a Standard Brush Seal and a Labyrinth Seal.
Degree: 2010, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7003
► Adequate sealing in turbomachinery reduces secondary leakage and results in more efficient and stable systems. Labyrinth seals are most common, although brush seals are popular…
(more)
▼ Adequate sealing in turbomachinery reduces secondary leakage and results in more efficient and stable systems. Labyrinth seals are most common, although
brush seals are popular in specialized applications. The Hybrid
Brush Seal (HBS) is a novel design that adds to the bristle
brush matrix a number of cantilever pads that rest on the rotor surface. Upon shaft rotation the pads lift due to the generation of a hydrodynamic gas film while the brushes effectively seal an upstream pressure. Hence the HBS has no wear and no local thermal distortion effects.
Measurements of leakage versus pressure differential are obtained in a three-teeth labyrinth, a conventional
brush seal, and a hybrid
brush seal for operation at high temperature (300?C), with shaft surface speeds to 27 m/s, and at supply pressures to 3.5 bar. Flow measurements are presented in terms of a flow factor to remove dependency on the air temperature and supply pressure. The measurements demonstrate the HBS leaks less (~61%) than a standard
brush seal and is significantly better (~38%) than a similarly sized labyrinth seal. Predictions of flow through a labyrinth seal predict well at supply pressures under 1.7 bar but overpredict by as much as 25% at high supply pressures. A porous medium fluid flow model predicts the flow through the HBS and
brush seal. The model for the HBS and
brush seal underpredicts the flow rate at low supply pressures but match well at high supply pressures.
Measurements of the drag torque of the test seals show the HBS has a larger torque when pressurized compared to the
brush seal and labyrinth seal. This indicates that the HBS experiences a larger degree of blow-down due to the pads decreasing the clearance.
The mechanical parameters of the
brush seal and HBS are found based upon the flexibility function from impact load tests. A combined structural and dry friction damping model represent well the measured flexibility. An equivalent damping is found based upon the energy dissipation. Based upon the damping ratio, the HBS has twice of the viscous damping as the
brush seal at a supply pressure of 2.0 bar.
Advisors/Committee Members: San Andr?s, Luis (advisor), Palazzolo, Alan (committee member), Keating, Peter (committee member).
Subjects/Keywords: Seals; Brush Seal; Labyrinth Seal; Hybrid Brush Seal
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APA ·
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APA (6th Edition):
Ashton, Z. (2010). High Temperature Leakage Performance of a Hybrid Brush Seal Compared to a Standard Brush Seal and a Labyrinth Seal. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7003
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):
Ashton, Zachary. “High Temperature Leakage Performance of a Hybrid Brush Seal Compared to a Standard Brush Seal and a Labyrinth Seal.” 2010. Thesis, Texas A&M University. Accessed December 06, 2019.
http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7003.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Ashton, Zachary. “High Temperature Leakage Performance of a Hybrid Brush Seal Compared to a Standard Brush Seal and a Labyrinth Seal.” 2010. Web. 06 Dec 2019.
Vancouver:
Ashton Z. High Temperature Leakage Performance of a Hybrid Brush Seal Compared to a Standard Brush Seal and a Labyrinth Seal. [Internet] [Thesis]. Texas A&M University; 2010. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7003.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Ashton Z. High Temperature Leakage Performance of a Hybrid Brush Seal Compared to a Standard Brush Seal and a Labyrinth Seal. [Thesis]. Texas A&M University; 2010. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-7003
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
The Ohio State University
8.
Owens, Clarence Burgess.
Chemical eradication of woody plants.
Degree: PhD, Graduate School, 1954, The Ohio State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486474580098324
Subjects/Keywords: Agriculture; Brush; Herbicides
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APA (6th Edition):
Owens, C. B. (1954). Chemical eradication of woody plants. (Doctoral Dissertation). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1486474580098324
Chicago Manual of Style (16th Edition):
Owens, Clarence Burgess. “Chemical eradication of woody plants.” 1954. Doctoral Dissertation, The Ohio State University. Accessed December 06, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=osu1486474580098324.
MLA Handbook (7th Edition):
Owens, Clarence Burgess. “Chemical eradication of woody plants.” 1954. Web. 06 Dec 2019.
Vancouver:
Owens CB. Chemical eradication of woody plants. [Internet] [Doctoral dissertation]. The Ohio State University; 1954. [cited 2019 Dec 06].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486474580098324.
Council of Science Editors:
Owens CB. Chemical eradication of woody plants. [Doctoral Dissertation]. The Ohio State University; 1954. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1486474580098324
Texas A&M University
9.
Shen, Li.
Influence of woody plant on spring and riparian vegetation in central Texas.
Degree: 2009, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-1373
► With the increase in human population, water resources have become more and more precious. A comprehensive study of water yield characteristics is imperative, especially in…
(more)
▼ With the increase in human population, water resources have become more and
more precious. A comprehensive study of water yield characteristics is imperative,
especially in water-limited semiarid regions. The objective of this study is to examine
spring flow and vegetation cover in a first-order watershed and investigate the
herbaceous community structure of upland riparian zones. This study consists of two
major components: (1) the effects of environmental factors and vegetation cover on
spring flow at Pedernales River upland catchments, and (2) the ecological responses of
vegetation to altered flow regimes that result from
brush management at the upland
riparian zones. The study finds that an average of 3.67% of the monthly water budget of
first-order catchments in central Texas is made up of spring flow. The influence of
woody plant cover on streamflow was evaluated by comparing spring sites with different
percentages of woody cover three times during 2003 and 2004. Our findings indicate
that changes in woody plant cover had no influence on the amounts of streamflow from
these catchments, and the surface catchment area had only a minor influence. This
suggests that the real spring catchment area might be different from the surface watershed boundaries that have been delineated by topography. Plant species richness
and diversity gradually decreased with increasing lateral distances from the stream bank.
Herbaceous richness and diversity declined with increasing Ashe juniper cover in the
riparian zone. Ashe juniper canopy cover had a larger effect on the understory
composition than the cover of other woody species. Herbaceous diversity and production
was greater in areas with sparse tree density than in areas with no trees, but was lowest
at high tree densities. The complete removal of Ashe juniper in the riparian zones is not
recommended because of the potential loss of grass cover. The recommended
management would be to leave a sparse cover of canopy trees to maintain understory
plants.
Advisors/Committee Members: Loh, K. Douglas (advisor), Wilcox, Bradford P. (advisor), Boutton, Thomas W. (committee member), Munster, Clyde L. (committee member).
Subjects/Keywords: Brush management; Spring flow; riparian vegetation
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APA (6th Edition):
Shen, L. (2009). Influence of woody plant on spring and riparian vegetation in central Texas. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1373
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):
Shen, Li. “Influence of woody plant on spring and riparian vegetation in central Texas.” 2009. Thesis, Texas A&M University. Accessed December 06, 2019.
http://hdl.handle.net/1969.1/ETD-TAMU-1373.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Shen, Li. “Influence of woody plant on spring and riparian vegetation in central Texas.” 2009. Web. 06 Dec 2019.
Vancouver:
Shen L. Influence of woody plant on spring and riparian vegetation in central Texas. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1373.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Shen L. Influence of woody plant on spring and riparian vegetation in central Texas. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1373
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Universidade do Rio Grande do Norte
10.
Borges, Aldo Nonato.
Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura
.
Degree: 2007, Universidade do Rio Grande do Norte
URL: http://repositorio.ufrn.br/handle/123456789/15552
► The electric can be converted into thermal, luminous, electromagnetic, and also in mechanical energy. In this context the electric engines plays a fundamental role, specially…
(more)
▼ The electric can be converted into thermal, luminous, electromagnetic, and also in mechanical energy. In this context the electric engines plays a fundamental role, specially that they work very below of its nominal capacity, with consequent decrease load density. In industrial environment, these characteristics of work of DC engines had also generated an extreme consumption of coal brushs and attack in the commutator reducing the useful life of the engine and increasing maintenance demand and cost. The general objective of the present work is to study the influence of the granulometry of the coal
brush used in DC engines with the resistance to the consumption of the same ones, as well as in the performance presented by the commutator of the engine. Additionally, determining the measurable and not measurable profits when the
brush used is adjusted to the application. The brushes had been produced by an industry of the sector and tested in industrial environment to evaluate their performance and consumption. Preliminary results evidence a substantial improvement in the performance of these brushes in function of its microstructure and the application in which it is used
Advisors/Committee Members: Nascimento, Rubens Maribondo do (advisor), CPF:80732810400 (advisor), http://lattes.cnpq.br/8671649752936793 (advisor).
Subjects/Keywords: Grafite;
Escova;
Porosidade;
Graphite;
Brush;
Porosity
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Manager
APA (6th Edition):
Borges, A. N. (2007). Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura
. (Thesis). Universidade do Rio Grande do Norte. Retrieved from http://repositorio.ufrn.br/handle/123456789/15552
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):
Borges, Aldo Nonato. “Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura
.” 2007. Thesis, Universidade do Rio Grande do Norte. Accessed December 06, 2019.
http://repositorio.ufrn.br/handle/123456789/15552.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Borges, Aldo Nonato. “Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura
.” 2007. Web. 06 Dec 2019.
Vancouver:
Borges AN. Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura
. [Internet] [Thesis]. Universidade do Rio Grande do Norte; 2007. [cited 2019 Dec 06].
Available from: http://repositorio.ufrn.br/handle/123456789/15552.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Borges AN. Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura
. [Thesis]. Universidade do Rio Grande do Norte; 2007. Available from: http://repositorio.ufrn.br/handle/123456789/15552
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Akron
11.
Kalan, Steven V.
Surface Modification of Silicon Through Thermal Annealing
and Rinsing of Solvent Cast Polystyrene Films.
Degree: MSin Polymer Engineering, Polymer Engineering, 2011, University of Akron
URL: http://rave.ohiolink.edu/etdc/view?acc_num=akron1316651768
► Surface modification is an important process for many applications. It has been found that an ultrathin polymer film can be generated on silicon substrates…
(more)
▼ Surface modification is an important process
for many applications. It has been found that an ultrathin polymer
film can be generated on silicon substrates with a native oxide
layer by spin-coating, thermally annealing, and washing films of
thiol terminated polystyrene (PS-SH) or anionically polymerized
polystyrene (PS). This is a useful modification technique as it
requires little pretreatment of the substrate or specialized
polymerization chemistry for the case of PS films. These ultrathin
films were characterized using contact angle (CA), x-ray reflection
(XR), and x-ray photoelectron spectroscopy
(XPS). Experimental results indicated that a thin
polymer film formed characteristic of the grafted polymer for both
PS-SH and PS due to the physical adsorption of the PS chains. It is
suggested that the benzene rings of polystyrene all share a bond
with the silicon surface creating a relatively overall strong bond
from the polymer to the silicon wafer. Differences in the PS-SH and
PS films are consistent with additional end-tethering of the PS-SH
chains. Spin coated films underwent different levels of rinsing
with multiple solvents. After all levels of rinsing, the polymer
was still present on the surface, indicating a relatively strong
physical bond between the polymer and silicon oxide. Control
experiments using non-annealed versus annealed polystyrene polymers
showed that grafting depends on the mobility of the chains during
thermal annealing of the polystyrene films. Two other samples,
polytert-butyl styrene (PtBS) and block copolymer poly
(styrene-b-dimethylsiloxane) (PS-b-PDMS), were also used and
compared with PS to show the effects of thermal annealing of PS to
a silicon surface. XR results show an increase in residual layer
thickness with molecular weight (Mw). Analysis of water contact
angle of PS residual layers as a function of annealing time and
annealing temperature illustrates directly proportional
relationships. Further surface modification analysis by ultra
violet light and ozone (UVO) treatment demonstrates that the
surface energy can be roughly tuned for a small range of UVO
treatment times.
Advisors/Committee Members: Karim, Alamgir (Advisor), Cavicchi, Kevin (Advisor).
Subjects/Keywords: Polymers; polymer brush; polystyrene adsorption silicon
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Manager
APA (6th Edition):
Kalan, S. V. (2011). Surface Modification of Silicon Through Thermal Annealing
and Rinsing of Solvent Cast Polystyrene Films. (Masters Thesis). University of Akron. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=akron1316651768
Chicago Manual of Style (16th Edition):
Kalan, Steven V. “Surface Modification of Silicon Through Thermal Annealing
and Rinsing of Solvent Cast Polystyrene Films.” 2011. Masters Thesis, University of Akron. Accessed December 06, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=akron1316651768.
MLA Handbook (7th Edition):
Kalan, Steven V. “Surface Modification of Silicon Through Thermal Annealing
and Rinsing of Solvent Cast Polystyrene Films.” 2011. Web. 06 Dec 2019.
Vancouver:
Kalan SV. Surface Modification of Silicon Through Thermal Annealing
and Rinsing of Solvent Cast Polystyrene Films. [Internet] [Masters thesis]. University of Akron; 2011. [cited 2019 Dec 06].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1316651768.
Council of Science Editors:
Kalan SV. Surface Modification of Silicon Through Thermal Annealing
and Rinsing of Solvent Cast Polystyrene Films. [Masters Thesis]. University of Akron; 2011. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1316651768
Oregon State University
12.
Chen, Justin Jeng-yie.
An economic analysis of the cost of chemical brush control in western Oregon.
Degree: PhD, Forest Management, 1974, Oregon State University
URL: http://hdl.handle.net/1957/12528
► Much forest land in Western Oregon has been lost to production due to brush competition. As the demand for forest products increases, more attention should…
(more)
▼ Much forest land in Western Oregon has been lost to production due to
brush competition. As the demand for forest products increases,
more attention should be paid to the reclamation of these unproductive lands.
Chemical herbicides have been proven an efficient tool for
brush control from the physiological viewpoint. This study uses the internal rate of return and benefit-cost ratio analyses for the economic evaluation of herbicidal
brush control for decision-making
under certainty. A general sensitivity analysis is conducted and discussed in terms of the changes in stumpage price and interest rate. The internal rates of return and benefit-cost ratios are given as guidelines to forest managers in decision-making. The possibility of using decision-making under uncertainty has been explored and explained. The maximum expected value was used as a criterion in decision-making process.
Advisors/Committee Members: Sutherland, Charles F. (advisor).
Subjects/Keywords: Brush – Control – Oregon
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Export
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Manager
APA (6th Edition):
Chen, J. J. (1974). An economic analysis of the cost of chemical brush control in western Oregon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/12528
Chicago Manual of Style (16th Edition):
Chen, Justin Jeng-yie. “An economic analysis of the cost of chemical brush control in western Oregon.” 1974. Doctoral Dissertation, Oregon State University. Accessed December 06, 2019.
http://hdl.handle.net/1957/12528.
MLA Handbook (7th Edition):
Chen, Justin Jeng-yie. “An economic analysis of the cost of chemical brush control in western Oregon.” 1974. Web. 06 Dec 2019.
Vancouver:
Chen JJ. An economic analysis of the cost of chemical brush control in western Oregon. [Internet] [Doctoral dissertation]. Oregon State University; 1974. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1957/12528.
Council of Science Editors:
Chen JJ. An economic analysis of the cost of chemical brush control in western Oregon. [Doctoral Dissertation]. Oregon State University; 1974. Available from: http://hdl.handle.net/1957/12528
Johannes Gutenberg Universität Mainz
13.
Spirin, Leonid.
Molecular dynamics simulations of sheared brush-like systems.
Degree: 2010, Johannes Gutenberg Universität Mainz
URL: http://ubm.opus.hbz-nrw.de/volltexte/2011/2550/
► Mit Hilfe von Molekulardynamik-Simulationen untersuchen wir bürstenartige Systeme unter guten Lösungsmittelbedingungen. Diese Systeme sind, dank ihren vielfältigen Beschaffenheiten, die von Molekularparametern und äußeren Bedingungen abhängig…
(more)
▼ Mit Hilfe von Molekulardynamik-Simulationen untersuchen wir bürstenartige Systeme unter guten Lösungsmittelbedingungen. Diese Systeme sind, dank ihren vielfältigen Beschaffenheiten, die von Molekularparametern und äußeren Bedingungen abhängig sind, wichtig für viele industrielle Anwendungen. Man vermutet, dass die Polymerbürsten eine entscheidende Rolle in der Natur wegen ihrer einzigartigen Gleiteigenschaften spielen. Ein vergröbertes Modell wird verwendet, um die strukturellen und dynamischen Eigenschaften zweier hochkomprimierter Polymerbürsten, die eine niedrige Reibung aufweisen, zu untersuchen. Allerdings sind die Lubrikationseigenschaften dieser Systeme, die in vielen biologischen Systemen vorhanden sind, beeinflußt. Wir untersuchen so-genannte "weiche Kolloide", die zwischen den beiden Polymerbürsten eingebettet sind, und wie diese Makroobjekte auf die Polymerbürsten wirken.rnrnNicht-Gleichgewichts-Molekulardynamik-Simulationen werden durchgeführt, in denen die hydrodynamischen Wechselwirkungen durch die Anwendung des DPD-Thermostaten mit expliziten Lösungsmittelmolekülen berücksichtigt werden. Wir zeigen, dass die Kenntnis der Gleichgewichtseigenschaften des Systems erlaubt, dynamische Nichtgleichgewichtsigenschaften der Doppelschicht vorherzusagen.rnrnWir untersuchen, wie die effektive Wechselwirkung zwischen kolloidalen Einschlüßen durch die Anwesenheit der Bürsten (in Abhängigkeit der Weichheit der Kolloide und der Pfropfdichte der Bürsten) beeinflußt wird. Als nächsten Schritt untersuchen wir die rheologische Antwort von solchen komplexen Doppelschichten auf Scherung. Wir entwickeln eine Skalen-Theorie, die die Abhängigkeit der makroskopischen Transporteigenschaften und der lateralen Ausdehnung der verankerten Ketten von der Weissenberg Zahl oberhalb des Bereichs, in dem die lineare Antwort-Theorie gilt, voraussagt. Die Vorhersagen der Theorie stimmen gut mit unseren und früheren numerischen Ergebnissen und neuen Experimenten überein. Unsere Theorie bietet die Möglichkeit, die Relaxationszeit der Doppelschicht zu berechnen. Wenn diese Zeit mit einer charakteristischen Längenskala kombiniert wird, kann auch das ''transiente'' (nicht-stationäre) Verhalten beschrieben werden.rnrnrnWir untersuchen die Antwort des Drucktensors und die Deformation der Bürsten während der Scherinvertierung für grosse Weissenberg Zahlen. Wir entwickeln eine Vorhersage für die charakteristische Zeit, nach der das System wieder den stationären Zustand erreicht.rnrnrnElektrostatik spielt eine bedeutende Rolle in vielen biologischen Prozessen. Die Lubrikationseigenschaften der Polymerbürsten werden durch die Anwesenheit langreichweitiger Wechselwirkungen stark beeinflusst. Für unterschiedliche Stärken der elektrostatischen Wechselwirkungen untersuchen wir rheologische Eigenschaften der Doppelschicht und vergleichen mit neutralen Systemen. Wir studieren den kontinuierlichen Übergang der Systemeigenschaften von neutralen zu stark geladenen Bürsten durch Variation der Bjerrumlänge und der Ladungsdichte.
By means of Molecular…
Subjects/Keywords: Bürste, Scherung, Polymer; Brush, Shear, Polymer; Physics
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Manager
APA (6th Edition):
Spirin, L. (2010). Molecular dynamics simulations of sheared brush-like systems. (Doctoral Dissertation). Johannes Gutenberg Universität Mainz. Retrieved from http://ubm.opus.hbz-nrw.de/volltexte/2011/2550/
Chicago Manual of Style (16th Edition):
Spirin, Leonid. “Molecular dynamics simulations of sheared brush-like systems.” 2010. Doctoral Dissertation, Johannes Gutenberg Universität Mainz. Accessed December 06, 2019.
http://ubm.opus.hbz-nrw.de/volltexte/2011/2550/.
MLA Handbook (7th Edition):
Spirin, Leonid. “Molecular dynamics simulations of sheared brush-like systems.” 2010. Web. 06 Dec 2019.
Vancouver:
Spirin L. Molecular dynamics simulations of sheared brush-like systems. [Internet] [Doctoral dissertation]. Johannes Gutenberg Universität Mainz; 2010. [cited 2019 Dec 06].
Available from: http://ubm.opus.hbz-nrw.de/volltexte/2011/2550/.
Council of Science Editors:
Spirin L. Molecular dynamics simulations of sheared brush-like systems. [Doctoral Dissertation]. Johannes Gutenberg Universität Mainz; 2010. Available from: http://ubm.opus.hbz-nrw.de/volltexte/2011/2550/
14.
Swavola, Julia.
CONSERVATIVE AND DISSIPATIVE FORCE MEASUREMENT TO ENGINEER STEALTH DRUG DELIVERY PARTICLES.
Degree: 2014, Johns Hopkins University
URL: http://jhir.library.jhu.edu/handle/1774.2/37141
► ABSTRACT Conservative and dissipative forces between drug delivery particles and mucus play a pivotal role in effective pulmonary drug delivery. Improved understanding of forces between…
(more)
▼ ABSTRACT Conservative and dissipative forces between drug delivery particles and mucus play a pivotal role in effective pulmonary drug delivery. Improved understanding of forces between DDPs and mucus is essential to engineering particles that efficiently penetrate the tenacious mucosal barrier. In this dissertation, specific thermodynamic and hydrodynamic interactions between differently coated DDPs and mucus were directly measured, creating a platform for engineering virus-mimicking stealth particles capable of efficient pulmonary drug delivery. Total Internal Reflection Microscopy combined with Bayesian inference analysis was used to directly measure specific and nonspecific interactions between DDP polymer
brush coatings and mucin polymer brushes on the energetic kT-scale. Considering that viruses with coexisting positive and negative charges in their outer coating rapidly penetrate the pulmonary mucosal barrier, particles were physiadsorbed with polymer brushes
that mimicked these viral coatings. PEO copolymer physiadsorbed to DDPs formed an uncharged, chemically inert and sterically stabilizing polymer coating. Polyelectrolytes in mono- or multi-layers and bovine serum albumin formed charged drug delivery particle coatings. Novel analytical theory was developed to characterize the conformation of the layers and define the steric interactions between polymer brushes. Methodical analysis of interactions between symmetric and asymmetric
brush layers ii facilitated identification of nonspecific and specific interactions and relative interaction strength. Protein layers with small size-scale charge separation were determined to have the greatest potential as mucoso-penetrating drug delivery particles. TIRM experiments identified physiadsorbed PEO copolymer and BSA as having significant potential as mucoso-penetrating drug delivery particles. Confocal fluorescence microscopy was then used to measure diffusion through mucus of DDPs baring these
coatings. Gradient diffusion, long time self diffusion, and diffusion into a mucus suspension were studied for each of these particle coatings in order to differentiate between specific and nonspecific hydrodynamic interactions. A constant pressure microfluidic system injecting solutions into a Y-junction microfluidic device combined with a novel analytical technique facilitated diffusion characterization with unprecedented accuracy and precision. Experimental data was fit to data generated via Comsol computational platform and to theoretical solutions with exceptional correlation. DDPs physiadsorbed with polyethylene glycol diffused rapidly through mucin suspensions. ConA and BSA protein bound to mucins via electrostatic and hydrophobic interactions, respectively. These results provide new insight into hydrodynamic interactions as they affect diffusion of virus-mimicking drug delivery particles through mucus. This dissertation combines thermodynamic and hydrodynamic measurements to
develop a detailed understanding of forces dictating mucosal penetration of pulmonary drug…
Advisors/Committee Members: Leheny, Robert (advisor).
Subjects/Keywords: mucus; drug delivery; TIRM; diffusion; polymer brush
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APA ·
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MLA ·
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Swavola, J. (2014). CONSERVATIVE AND DISSIPATIVE FORCE MEASUREMENT TO ENGINEER STEALTH DRUG DELIVERY PARTICLES. (Thesis). Johns Hopkins University. Retrieved from http://jhir.library.jhu.edu/handle/1774.2/37141
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):
Swavola, Julia. “CONSERVATIVE AND DISSIPATIVE FORCE MEASUREMENT TO ENGINEER STEALTH DRUG DELIVERY PARTICLES.” 2014. Thesis, Johns Hopkins University. Accessed December 06, 2019.
http://jhir.library.jhu.edu/handle/1774.2/37141.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Swavola, Julia. “CONSERVATIVE AND DISSIPATIVE FORCE MEASUREMENT TO ENGINEER STEALTH DRUG DELIVERY PARTICLES.” 2014. Web. 06 Dec 2019.
Vancouver:
Swavola J. CONSERVATIVE AND DISSIPATIVE FORCE MEASUREMENT TO ENGINEER STEALTH DRUG DELIVERY PARTICLES. [Internet] [Thesis]. Johns Hopkins University; 2014. [cited 2019 Dec 06].
Available from: http://jhir.library.jhu.edu/handle/1774.2/37141.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Swavola J. CONSERVATIVE AND DISSIPATIVE FORCE MEASUREMENT TO ENGINEER STEALTH DRUG DELIVERY PARTICLES. [Thesis]. Johns Hopkins University; 2014. Available from: http://jhir.library.jhu.edu/handle/1774.2/37141
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Sydney
15.
Isahak, Naatasha.
Modifed Silica Nanoparticles for Biomedical Applications
.
Degree: 2016, University of Sydney
URL: http://hdl.handle.net/2123/15745
► Nanoparticles have been extensively explored for biomedical applications primarily due to their nanoscale dimensions that allow them to cross biological membranes and to interact with…
(more)
▼ Nanoparticles have been extensively explored for biomedical applications primarily due to their nanoscale dimensions that allow them to cross biological membranes and to interact with cells and cellular components. The use of well defined inorganic nanoparticles lacks the necessary functionality to be useful in a wide range of applications, especially those in biology and medicine. As such, in order to overcome these limitations, surface modifications of nanoparticles allows tuning of the interfacial properties such as hydrophilicity, binding and adsorption of molecules and proteins, and cell adhesion - that can be desirable in biomedical applications.
Presented here are silica nanoparticles modified with a shell layer of well-defined, high-density polymer brushes generated by surface initiated reversible addition-fragmentation chain transfer polymerization (SI-RAFT). The grafting-from technique adopted in this work allows for significantly higher polymer brush densities as compared to a grafting-to approach. With the ability to extend polymer ligands to desired lengths as well as introducing multivalency to these particles, this design approach enables the fine tuning of particle properties to suit an array of biological applications.
The work described in this thesis highlights the versatility of SI-RAFT to synthesize hydrophilic biocompatible polymers to extend the functionalities of nanoparticles through mutivalent effects and improved colloidal stability. The introduction of functional charged polymer brushes is described to afford nanoparticles with antibacterial properties and improve chemokine binding interactions. The thesis also describes the expansion of the types of molecules that can be conjugated to nanoparticles and the use of underutilized reactions, e.g. native chemical ligation (NCL) in order to do so. Specifically, the use of the NCL reaction is described as a novel strategy to post modify hybrid particles with peptides. Finally, with a view to contributing to the development of SI-RAFT polymerization, this thesis includes the optimization of direct SI-RAFT polymerization on colloidal systems to negate the use of sacrificial RAFT agents and allow for efficient synthesis of SI-RAFT modified nanoparticles.
Subjects/Keywords: RAFT;
polymers;
brush;
nanoparticles;
surface;
biomedical
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Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Isahak, N. (2016). Modifed Silica Nanoparticles for Biomedical Applications
. (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/15745
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):
Isahak, Naatasha. “Modifed Silica Nanoparticles for Biomedical Applications
.” 2016. Thesis, University of Sydney. Accessed December 06, 2019.
http://hdl.handle.net/2123/15745.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Isahak, Naatasha. “Modifed Silica Nanoparticles for Biomedical Applications
.” 2016. Web. 06 Dec 2019.
Vancouver:
Isahak N. Modifed Silica Nanoparticles for Biomedical Applications
. [Internet] [Thesis]. University of Sydney; 2016. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/2123/15745.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Isahak N. Modifed Silica Nanoparticles for Biomedical Applications
. [Thesis]. University of Sydney; 2016. Available from: http://hdl.handle.net/2123/15745
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Houston
16.
Sadani, Sidharth 1993-.
Analyzing Notions of Artistic Style Using Computer Vision Techniques.
Degree: Computer Science, Department of, 2018, University of Houston
URL: http://hdl.handle.net/10657/3481
► Computer vision has made significant strides in the area of artistic style transfer, and a few attempts have been made to extract and define the…
(more)
▼ Computer vision has made significant strides in the area of artistic style transfer, and a few attempts have been made to extract and define the style signature of various artists. However, most of these endeavors have been limited by treating a creative task such as painting and critiquing style as a traditional machine learning problem. In this study, we try to shift the viewpoint from machine learning trying to solve an art problem, to one where the art world is using computer vision techniques to fit its purpose. This subtle difference is extremely important because it allows us to build notions of style in a bottom up fashion, rooted in the domain knowledge pertaining to artistic style.
This work aims to take first steps towards building an understanding of similarity in artistic style with the intention of critiquing and valuing art. I begin by constructing a dataset of approximately 14,000 high-resolution paintings, which are part of the Google Art Project, available under the Wikimedia Commons License. I explore the possibility of neural style transfer features being good measures of style similarity, and proceed to develop computationally useful style features for scene composition, color palette,
brush strokes, and contours. I conduct a domain-specific study wtih experts to validate the importance of each of the style features. I then present a novel way to normalize and weight these features based on the external study and develop a cumulative measure of artistic style similarity. Finally, I validate the results qualitatively on historically accepted examples in the art community, and quantitatively via a second domain study with experts.
Advisors/Committee Members: Shah, Shishir (advisor), Vance, Kelli (committee member), Solorio, Thamar (committee member).
Subjects/Keywords: Artistic style; Computer vision; Brush stroke
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APA (6th Edition):
Sadani, S. 1. (2018). Analyzing Notions of Artistic Style Using Computer Vision Techniques. (Thesis). University of Houston. Retrieved from http://hdl.handle.net/10657/3481
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):
Sadani, Sidharth 1993-. “Analyzing Notions of Artistic Style Using Computer Vision Techniques.” 2018. Thesis, University of Houston. Accessed December 06, 2019.
http://hdl.handle.net/10657/3481.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Sadani, Sidharth 1993-. “Analyzing Notions of Artistic Style Using Computer Vision Techniques.” 2018. Web. 06 Dec 2019.
Vancouver:
Sadani S1. Analyzing Notions of Artistic Style Using Computer Vision Techniques. [Internet] [Thesis]. University of Houston; 2018. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/10657/3481.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Sadani S1. Analyzing Notions of Artistic Style Using Computer Vision Techniques. [Thesis]. University of Houston; 2018. Available from: http://hdl.handle.net/10657/3481
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Massey University
17.
Hooton, Diane Frances.
Brush border digestion : development of a physiologically relevant in vitro model.
Degree: PhD, Physiology, 2018, Massey University
URL: http://hdl.handle.net/10179/14125
► The majority of current in vitro digestion methods either exclude the small intestinal brush border (BB) phase of digestion or do not incorporate the entire…
(more)
▼ The majority of current in vitro digestion methods either exclude the small intestinal brush border (BB) phase of digestion or do not incorporate the entire array of BB enzymes that are required to achieve terminal endogenous digestion in vivo. Accordingly, the digestate, and its derivitives, may not be representative of the digestive process in vivo. In order to improve the fidelity of the in vitro digestion process this thesis developed a physiologically relevant small intestinal BB phase using enzymes isolated from rat small intestinal mucosal tissue. The activities of BB enzymes were assessed and compared with known values, and under conditions physiologically representative of the small intestine. Although there were significant differences in BB enzyme
activities depending on pH, enzyme solubilisation, and upon prolonged exposure to biliopancreatic secretions the BB preparation was deemed suitable for use in an in vitro digestion method.
A rationale for the composition of the BB digestive phase was developed based on published physiological data, and was validated using glycosylated polyphenolic compounds as substrates. Liquid chromatography mass spectrometry (LC-MS) was used to assess the derivatisation products of BB digestion. In the absence of biliopancreatic secretions the onion flesh polyphenolic compounds quercetin-4ʹ-glucoside and isorhamnetin-4ʹ-glucoside, but not quercetin-3-glucoside or quercetin-34ʹ-diglucoside were hydrolysed. The positive control quercetin-3-glucoside was hydrolysed, and the negative control quercetin-3-rutinoside was not hydrolysed. The deglycosylation of quercetin-3-glucoside was monitored under conditions representative of the small intestine, i.e. incorporating bile and pancreatin, while at the appropriate pH. Quercetin-3-glucoside was significantly deglycosylated in BB treatments (no treatment or pancreatin alone) compared to BB treatments with bile (bile alone or pancreatin and bile).
The mammalian digestive system is equipped to hydrolyse macronutrients from their polymeric form through to monomers and oligomers suitable for absorption across the epithelial layer. As such the inactivation or degradation of some BB enzymes during the BB digestive phase by bile or pancreatin was not unexpected, and does not preclude its use as an in vitro tool in the future.
Subjects/Keywords: Digestion;
Brush border membrane;
Intestines|xMicrobiology
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Manager
APA (6th Edition):
Hooton, D. F. (2018). Brush border digestion : development of a physiologically relevant in vitro model. (Doctoral Dissertation). Massey University. Retrieved from http://hdl.handle.net/10179/14125
Chicago Manual of Style (16th Edition):
Hooton, Diane Frances. “Brush border digestion : development of a physiologically relevant in vitro model.” 2018. Doctoral Dissertation, Massey University. Accessed December 06, 2019.
http://hdl.handle.net/10179/14125.
MLA Handbook (7th Edition):
Hooton, Diane Frances. “Brush border digestion : development of a physiologically relevant in vitro model.” 2018. Web. 06 Dec 2019.
Vancouver:
Hooton DF. Brush border digestion : development of a physiologically relevant in vitro model. [Internet] [Doctoral dissertation]. Massey University; 2018. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/10179/14125.
Council of Science Editors:
Hooton DF. Brush border digestion : development of a physiologically relevant in vitro model. [Doctoral Dissertation]. Massey University; 2018. Available from: http://hdl.handle.net/10179/14125
Oregon State University
18.
Findley, Roger Raymond.
Changes in plant communities following rangeland brush control.
Degree: MS, Rangeland Resources, 1974, Oregon State University
URL: http://hdl.handle.net/1957/45225
► Recently, the big sagebrush taxa has been split into subspecies and forms. Four habitat types related to subspecies of big sagebrush were studied in Eastern…
(more)
▼ Recently, the big sagebrush taxa has been split into subspecies
and forms. Four habitat types related to subspecies of big sagebrush
were studied in Eastern Oregon. Response of understory vegetation was
measured following three range improvement techniques implemented on
the four habitat types for several ages of treatment. Crown cover,
density, and frequency of three subspecies of big sagebrush were measured,
the relationship of sagebrush to improvement treatment and
composition of understory vegetation was evaluated.
In general, the same plant species responded differently on four
habitat types manipulated by spray-release treatment. Approximately
one-third of the perennial grass species increased, one-third decreased,
and one-third showed no change in frequency, density, and cover between
treated and untreated areas four years after treatment on the basin
big sagebrush-bluebunch wheatgrass-bottlebrush squirreltail habitat
type. However, total grass representation increased after treatment.
Perennial forb and shrub species generally showed no change in frequency,
density, and cover in the fourth year following spray-release
treatment on the same habitat type. Perennial grass and shrub species generally showed no change while perennial forb species generally
decreased in frequency, density, and cover between treated and
untreated areas in the fourth year following spray-release treatment
on the Wyoming big sagebrush-Thurber needlegrass habitat type. Perennial
vegetation generally showed no difference in frequency, density,
and cover between treated and untreated areas in the sixth year
following spray-release treatment on mountain big sagebrush-Idaho fescue
habitat type. Perennial grass species generally increased, perennial
forb species generally showed no change, and shrubs species generally
decreased in frequency, density, and cover between treated and
untreated areas in the sixth year after spray-release treatment on the
Wyoming big sagebrush-bluebunch wheatgrass habitat type.
The same plant species responded differently to three improvement
treatments implemented on the Wyoming big sagebrush-Thurber needlegrass
habitat type. Annual vegetation generally increased in frequency on
treated areas compared to untreated areas in six years following spray-seed
treatment on this habitat type. Approximately half of the native
perennial grass species decreased and half showed no change in frequency,
density, and cover after six years following spray-seed treatment
on this habitat type. Total grass representation increased after
treatment. Perennial forb and shrub species generally showed no change
in frequency, density, and cover after six years following spray-seed
treatment on this habitat type. Approximately half of the annual forb
and grass species increased in frequency and the rest either decreased
or showed no change in frequency on treated and untreated areas in ten
years following plow-seed treatment on this habitat type. Total representation
of annual vegetation…
Advisors/Committee Members: Krueger, William C. (advisor).
Subjects/Keywords: Brush – Control – Oregon
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Manager
APA (6th Edition):
Findley, R. R. (1974). Changes in plant communities following rangeland brush control. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/45225
Chicago Manual of Style (16th Edition):
Findley, Roger Raymond. “Changes in plant communities following rangeland brush control.” 1974. Masters Thesis, Oregon State University. Accessed December 06, 2019.
http://hdl.handle.net/1957/45225.
MLA Handbook (7th Edition):
Findley, Roger Raymond. “Changes in plant communities following rangeland brush control.” 1974. Web. 06 Dec 2019.
Vancouver:
Findley RR. Changes in plant communities following rangeland brush control. [Internet] [Masters thesis]. Oregon State University; 1974. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1957/45225.
Council of Science Editors:
Findley RR. Changes in plant communities following rangeland brush control. [Masters Thesis]. Oregon State University; 1974. Available from: http://hdl.handle.net/1957/45225
North Carolina State University
19.
Arifuzzaman, Shafi Mahmud.
Applications of functional polymer brushes for nanoparticle uptake and prevention
of protein adsorption.
Degree: PhD, Chemical Engineering, 2010, North Carolina State University
URL: http://www.lib.ncsu.edu/resolver/1840.16/6154
► The central theme of this Ph.D. dissertation is to develop novel multifunctional polymer coatings for understanding partition of proteins and nanoparticles on polymers grafted to…
(more)
▼ The central theme of this Ph.D. dissertation is to develop novel multifunctional
polymer coatings for understanding partition of proteins and nanoparticles on polymers
grafted to flat surfaces (so-called brushes). Systematic investigation of the adsorption
phenomena is accomplished by utilizing surface-anchored assemblies comprising grafted
polymers with variation in physical properties (i.e., length or/and grafting density) and
chemical functionality. The chemical composition of the
brush is tailored by either
“chemical coloring†of a parent homopolymer
brush with selective chemical moieties or by
sequential growth of two chemically dissimilar polymer blocks. We present preparation of
two types of tailor-made, surface-grafted copolymers: 1) those composed of hydrophilic and
hydrophobic blocks (so-called amphiphilic polymer brushes), and 2) those comprising of
anionic and cationic polymer segments (so-called polyampholyte brushes). We describe the
organization of functionality in the grafted polymer brushes and the partitioning of proteins
and nanoparticles using a battery of complementary analytical probes. Specifically, we
address how varying the molecular weight, grafting density, and chemical composition of the
brush affects adsorbtion and desorbtion of model proteins and gold nanoparticles. Our
observations indicate densely-populated responsive amphiphilic polymers are very efficient
in suppressing protein adsorption. In addition, we have established that the length of poly(ethylene glycol) spacers attached to a parent homopolymer
brush is a key factor
governing uptake of gold nanoparticles. Both grafting density and molecular weight of the
coating are important in controlling the kinetics and thermodynamics of protein adsorption
on surfaces. Our findings and methodologies can lead to the development of next generation
environmentally friendly antifouling surfaces and will find application in medical devices,
antifouling coatings and anti reflection finishes.
Advisors/Committee Members: Dr. Jan Genzer, Committee Member (advisor), Dr. Saad Khan, Committee Member (advisor), Dr. Orlin D. Velev, Committee Member (advisor), Dr. Orlando Rojas, Committee Member (advisor).
Subjects/Keywords: Polymer brush; Protein adsorption; Nano-particle adsorption
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Arifuzzaman, S. M. (2010). Applications of functional polymer brushes for nanoparticle uptake and prevention
of protein adsorption. (Doctoral Dissertation). North Carolina State University. Retrieved from http://www.lib.ncsu.edu/resolver/1840.16/6154
Chicago Manual of Style (16th Edition):
Arifuzzaman, Shafi Mahmud. “Applications of functional polymer brushes for nanoparticle uptake and prevention
of protein adsorption.” 2010. Doctoral Dissertation, North Carolina State University. Accessed December 06, 2019.
http://www.lib.ncsu.edu/resolver/1840.16/6154.
MLA Handbook (7th Edition):
Arifuzzaman, Shafi Mahmud. “Applications of functional polymer brushes for nanoparticle uptake and prevention
of protein adsorption.” 2010. Web. 06 Dec 2019.
Vancouver:
Arifuzzaman SM. Applications of functional polymer brushes for nanoparticle uptake and prevention
of protein adsorption. [Internet] [Doctoral dissertation]. North Carolina State University; 2010. [cited 2019 Dec 06].
Available from: http://www.lib.ncsu.edu/resolver/1840.16/6154.
Council of Science Editors:
Arifuzzaman SM. Applications of functional polymer brushes for nanoparticle uptake and prevention
of protein adsorption. [Doctoral Dissertation]. North Carolina State University; 2010. Available from: http://www.lib.ncsu.edu/resolver/1840.16/6154
University of Sydney
20.
Li, Hannah Ming Wai.
Tools of State: The Evolution of the Chinese Scholar’s Toolkit
.
Degree: 2019, University of Sydney
URL: http://hdl.handle.net/2123/20047
► The ink stone, brush, ink stick and paper, commonly termed the “Four Treasures of the Scholar’s Desk,” are the key components of the “scholar’s toolkit”…
(more)
▼ The ink stone, brush, ink stick and paper, commonly termed the “Four Treasures of the Scholar’s Desk,” are the key components of the “scholar’s toolkit” with which scholars in ancient China conducted the administration of state affairs, private and official correspondence and the literary arts. Despite a wealth of interest in the origins of writing and substantial prior research on Chinese scholars as well as inscribed objects from the early dynasties, the ancestry of the Scholar’s Desk writing assemblage and its establishment as a standardized set has yet to be explored in depth from an archaeological perspective.
The development of the writing assemblage from its origins to standardization as a complete set comprised of brush, ink, ink stick and paper, which took place from the Neolithic to the end of the Han dynasty (c. 7000 BC – AD 220), remains a gap in scholarship that needs to be addressed. The extent to which the early states and the scholars were involved in the development of the writing assemblage also requires examination. A broad pattern analysis with focus directed towards the overall trends in the frequency of occurrence of writing assemblage finds, in addition to evidence of changes in their use and co-occurrence in burial, is necessary in order to illustrate how the four components of the Scholar’s Desk assemblage came together and were established as a set through its use by the state and by the scholars.
This research contends that the writing assemblage, which had an extensive ancestry and extended development process, was established as a standardized set both through the combined interests of the scholars and then of the state. Through the use of the assemblage by the scholars in the service of the state, the scholars and the writing assemblage became the “tools of state” that were essential for the running of Chinese society.
Subjects/Keywords: writing tools;
China;
brush;
paper;
scholar's desk
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, H. M. W. (2019). Tools of State: The Evolution of the Chinese Scholar’s Toolkit
. (Thesis). University of Sydney. Retrieved from http://hdl.handle.net/2123/20047
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):
Li, Hannah Ming Wai. “Tools of State: The Evolution of the Chinese Scholar’s Toolkit
.” 2019. Thesis, University of Sydney. Accessed December 06, 2019.
http://hdl.handle.net/2123/20047.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Li, Hannah Ming Wai. “Tools of State: The Evolution of the Chinese Scholar’s Toolkit
.” 2019. Web. 06 Dec 2019.
Vancouver:
Li HMW. Tools of State: The Evolution of the Chinese Scholar’s Toolkit
. [Internet] [Thesis]. University of Sydney; 2019. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/2123/20047.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Li HMW. Tools of State: The Evolution of the Chinese Scholar’s Toolkit
. [Thesis]. University of Sydney; 2019. Available from: http://hdl.handle.net/2123/20047
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Bowling Green State University
21.
Bradford, Matthew S.
Mapping Clay Alteration Across the Northern Goldstrike
Property Using Spectroscopy and Remote Sensing, Eureka County,
Nevada.
Degree: MS, Geology, 2008, Bowling Green State University
URL: http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1216923357
► The purpose of this study is to map the clay alteration across the northern portion of Barrick's Goldstrike property, located along the Carlin trend.…
(more)
▼ The purpose of this study is to map the clay
alteration across the northern portion of Barrick's Goldstrike
property, located along the Carlin trend. The study focused on the
occurrences of three specific occurrences, ammonium-illite,
kandites, and changes in the AlOH feature position (broken into
four classes: sodium-rich, slightly sodium-rich, normal, and
iron-rich) along three section lines. The clay alteration was
mapped using down-hole spectroscopy (a spectral measurement was
collected at 5-20 ft depth intervals in each hole) and remote
sensing (Probe-1 airborne sensor). The remote sensing portion
utilized pixels extracted by averaging the spectra of
ammonium-illites and illites showing different AlOH feature
positions and individually running them through Spetral Angle
Mapper and ratio codes to identify areas with ammonium-illite and
changes in the AlOH feature position. Only ratio codes were needed
to identify kandites in the remote sensing data.
The down-hole spectroscopy data of the ammonium-illite
show that it occurred predominantly over a small gold deposit
(Golden April), is strongly structurally controlled and is four
times more abundant in ore-bearing holes than in non ore-bearing
holes. Both types of remote sensing data showed the highest
concentration of ammonium-illite occurred along section
B-B'. The down-hole spectroscopy data of the
kandites showed a strong association to structures and felsic
igneous material and that it is twice as abundant in ore-bearing
holes than in non ore-bearing holes. The only concession is that
both the gold deposits encountered in the section lines are
partially hosted in igneous rock. The remote sensing data shows
limited surface expressions and reiterates the structural control
for kandite occurrence. The down-hole
spectroscopy data of the AlOH feature position shows a strong
structural control and the strongest correlation to gold
deposition. The sodium-rich and the slightly sodium-rich
compositions are five and ten times more abundant in ore-bearing
holes than in non-ore bearing holes, respectively. Remote sensing
shows promise in being able to map changes in the AlOH feature
position at the surface, but there is not a wavelength band on
Probe-1 located completely within either the sodium-rich or
slightly sodium-rich compositions. All three of
the occurrences mapped in this study show a correlation to gold and
should be utilized as exploration tools in the future. The only
concession to keep in mind is the fact that the ore encountered
along the section lines is partially hosted in igneous material,
which explains why kandites are twice as abundant in ore-bearing
holes than in non ore-bearing holes. The AlOH feature position
shows the strongest correlation to both gold deposits and would
make the best exploration tool.
Advisors/Committee Members: Vincent, Robert (Advisor).
Subjects/Keywords: Geology; Mineralogy; Mining; Remote Sensing; illites; kaolinite; Brush Salt; kandites; Brush; Betze/Post; NH4-illite
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MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Bradford, M. S. (2008). Mapping Clay Alteration Across the Northern Goldstrike
Property Using Spectroscopy and Remote Sensing, Eureka County,
Nevada. (Masters Thesis). Bowling Green State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1216923357
Chicago Manual of Style (16th Edition):
Bradford, Matthew S. “Mapping Clay Alteration Across the Northern Goldstrike
Property Using Spectroscopy and Remote Sensing, Eureka County,
Nevada.” 2008. Masters Thesis, Bowling Green State University. Accessed December 06, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1216923357.
MLA Handbook (7th Edition):
Bradford, Matthew S. “Mapping Clay Alteration Across the Northern Goldstrike
Property Using Spectroscopy and Remote Sensing, Eureka County,
Nevada.” 2008. Web. 06 Dec 2019.
Vancouver:
Bradford MS. Mapping Clay Alteration Across the Northern Goldstrike
Property Using Spectroscopy and Remote Sensing, Eureka County,
Nevada. [Internet] [Masters thesis]. Bowling Green State University; 2008. [cited 2019 Dec 06].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1216923357.
Council of Science Editors:
Bradford MS. Mapping Clay Alteration Across the Northern Goldstrike
Property Using Spectroscopy and Remote Sensing, Eureka County,
Nevada. [Masters Thesis]. Bowling Green State University; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1216923357
Kansas State University
22.
Brunkow, Glenn Edward.
Chemical
control of rough-leaved dogwood.
Degree: MS, Department of
Agronomy, 2009, Kansas State University
URL: http://hdl.handle.net/2097/2268
► Rough-leaved dogwood (Cornus Drummondii Meyer) is one of the most invasive woody plants in rangeland of Kansas. Reduced prescribed burning due to drought and urban…
(more)
▼ Rough-leaved dogwood (Cornus Drummondii Meyer) is one
of the most invasive woody plants in rangeland of Kansas. Reduced
prescribed burning due to drought and urban encroachment probably
has contributed to its spread. Herbicides are commonly recommended
for control of rough-leaved dogwood, but minimal data exists for
recommendation development. Ten herbicide treatments were applied
in June during late flowering at two locations in northeast Kansas
in 2005 and 2006. Each treatment was replicated three times in a
randomized complete block design with individual plot sizes of 3 x
3 m. Herbicides were applied with hand sprayers in 1017 L/ha
solution. Visual evaluations of defoliation were made about 1 and
12 months after treatment (MAT) and mortality was estimated about 1
year after treatment (YAT). Defoliation 1 MAT varied among
herbicides with significant location by year and herbicide by year
interactions. Treatments providing greater than 70% defoliation 12
MAT both years were triclopyr + 2,4-D (1.12 + 1.06 kg ae/ha),
triclopyr + fluroxypyr (1.83 + 0.61 kg ae/ha), picloram +
fluroxypyr (0.41 + 0.41 and 0.82 + 0.82 kg ae/ha), and picloram +
2,4-D + triclopyr (0.66 + 2.44 + 2.44 kg ae/ha). Rough-leaved
dogwood is difficult to control with a single herbicide
application, but treatments exist that will substantially reduce
stands. Tebuthiuron pellets (Spike 20P) are another control measure
recommended for rough-leaved dogwood. Treatments of 4.4 kg ai/ha
(3/4 oz per 100 square feet) tebuthiuron pellets were applied in
December 2004. A visual estimate of control indicated tebuthiuron
reduced dogwood cover by 65% compared to a 3% decrease on untreated
plots. Dogwood density was reduced by 2.2 stems/m2 (P<0.08).
Total woody plant cover increased on untreated plots by 6.2
percentage units, but was decreased by 20.9 percentage units on
tebuthiuron treated plots. Other woody plants decreased in both
treated and untreated plots. Shading by a large elm tree likely
caused variation between replications including increases in cover
and density of rough-leaved dogwood on treated plots. Tebuthiuron
is a photosynthetic inhibitor that often is not effective on shaded
plants. Tebuthiuron pellets applied at 4.4 kg ai/ha was an
effective control option for unshaded rough-leaved
dogwood.
Advisors/Committee Members: Walter H. Fick.
Subjects/Keywords: Rough-Leaved Dogwood; Invasive
Brush; Chemical
Brush Control; Invasive
Range Species; Agriculture, Agronomy (0285); Agriculture, Range Management (0777)
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Chicago ·
MLA ·
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CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Brunkow, G. E. (2009). Chemical
control of rough-leaved dogwood. (Masters Thesis). Kansas State University. Retrieved from http://hdl.handle.net/2097/2268
Chicago Manual of Style (16th Edition):
Brunkow, Glenn Edward. “Chemical
control of rough-leaved dogwood.” 2009. Masters Thesis, Kansas State University. Accessed December 06, 2019.
http://hdl.handle.net/2097/2268.
MLA Handbook (7th Edition):
Brunkow, Glenn Edward. “Chemical
control of rough-leaved dogwood.” 2009. Web. 06 Dec 2019.
Vancouver:
Brunkow GE. Chemical
control of rough-leaved dogwood. [Internet] [Masters thesis]. Kansas State University; 2009. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/2097/2268.
Council of Science Editors:
Brunkow GE. Chemical
control of rough-leaved dogwood. [Masters Thesis]. Kansas State University; 2009. Available from: http://hdl.handle.net/2097/2268
University of New South Wales
23.
Le-Masurier, Solomon.
Polydopamine coated substrates as scaffolds for glycopolymer brushes attached via one-pot 'grafting from' synthesis and para-fluoro 'click chemistry' for biomedical applications.
Degree: Centre for Advanced Macromolecular Design, 2014, University of New South Wales
URL: http://handle.unsw.edu.au/1959.4/54075
;
https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12852/SOURCE02?view=true
► The biomimetically inspired polydopamine coating is a facile surface coating process suitable for a range of substrates. These coatings are robust and provide a wide…
(more)
▼ The biomimetically inspired polydopamine coating is a facile surface coating process suitable for a range of substrates. These coatings are robust and provide a wide array of accessible functional groups for further surface modification. This dissertation describes the use of polydopamine coatings on magnetoelastic alloy substrates and silicon dioxide nanoparticles. The magnetoelastic alloys can function as biochemical detection devices if suitably coated with a ‘chemically responsive layer’ to provide an attractive surface for analytes. The silicon dioxide nanoparticles can be further processed to create specially coated hollow particles for ‘smart’ delivery of therapeutic agents. The successful creation of the polydopamine coatings was confirmed with ATR-FTIR, contact angle measurements and thermogravimetric analysis for the particles.Once the polydopamine coatings were created they were further modified to create glycopolymer coated surfaces for protein binding. These glycopolymer coatings were created by attaching polymer brushes to the polydopamine coated substrates. Both traditional ‘grafting to’ and ‘grafting from’ techniques were employed to create polymer brushes of varying grafting densities. Reversible addition-fragmentation chain transfer (RAFT) controlled radical polymerization techniques were used to grow polymer brushes with narrow dispersities and specific molecular weights. While ‘grafting from’ techniques produce a higher grafting density, they typically involve two steps – initiator deposition followed by polymerization. A one-pot single-step method of simultaneously growing a polymer
brush and attaching it to a surface was successfully created utilizing a carbonyl azide-terminated RAFT agent for isocyanate coupling. The polymer
brush coatings offer the advantages of increased effective surface areas over bulk polymer coatings per unit substrate surface area. Poly(pentafluorostyrene) polymer brushes were created and then simple ‘thiol-click’ reactions with 1-thio-beta-glucose were performed to convert the poly(pentafluorostyrene) polymer brushes to glycopolymers. Thermogravimetric analysis, ATR-FTIR and contact angle measurements confirmed the successful glucosylation of the polymer brushes. Preliminary protein binding results confirmed via confocal microscopy and fluorescence lifetime imaging microscopy (FLIM) showed that protein binding successfully occurred on the glycopolymer coated materials. This work represents the unique combination of polydopamine coatings with glycopolymer brushes via facile synthesis routes to create materials with potential in biochemical detection and as ‘smart’ drug delivery devices.
Advisors/Committee Members: Granville, Anthony, Faculty of Engineering, UNSW.
Subjects/Keywords: RAFT; polymer; polydopamine; polymer brush; glycopolymer; biosensing; drug delivery; glycopolymer brush; surface science; surface initiated polymerization
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APA (6th Edition):
Le-Masurier, S. (2014). Polydopamine coated substrates as scaffolds for glycopolymer brushes attached via one-pot 'grafting from' synthesis and para-fluoro 'click chemistry' for biomedical applications. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/54075 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12852/SOURCE02?view=true
Chicago Manual of Style (16th Edition):
Le-Masurier, Solomon. “Polydopamine coated substrates as scaffolds for glycopolymer brushes attached via one-pot 'grafting from' synthesis and para-fluoro 'click chemistry' for biomedical applications.” 2014. Doctoral Dissertation, University of New South Wales. Accessed December 06, 2019.
http://handle.unsw.edu.au/1959.4/54075 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12852/SOURCE02?view=true.
MLA Handbook (7th Edition):
Le-Masurier, Solomon. “Polydopamine coated substrates as scaffolds for glycopolymer brushes attached via one-pot 'grafting from' synthesis and para-fluoro 'click chemistry' for biomedical applications.” 2014. Web. 06 Dec 2019.
Vancouver:
Le-Masurier S. Polydopamine coated substrates as scaffolds for glycopolymer brushes attached via one-pot 'grafting from' synthesis and para-fluoro 'click chemistry' for biomedical applications. [Internet] [Doctoral dissertation]. University of New South Wales; 2014. [cited 2019 Dec 06].
Available from: http://handle.unsw.edu.au/1959.4/54075 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12852/SOURCE02?view=true.
Council of Science Editors:
Le-Masurier S. Polydopamine coated substrates as scaffolds for glycopolymer brushes attached via one-pot 'grafting from' synthesis and para-fluoro 'click chemistry' for biomedical applications. [Doctoral Dissertation]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/54075 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12852/SOURCE02?view=true
24.
Aldo Nonato Borges.
Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura.
Degree: 2007, Universidade Federal do Rio Grande do Norte
URL: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=2135
► A energia elétrica pode ser reconvertida em energia térmica, luminosa, eletromagnética, e também em energia mecânica. Neste contexto os motores elétricos desempenham papel fundamental, em…
(more)
▼ A energia elétrica pode ser reconvertida em energia térmica, luminosa, eletromagnética, e também em energia mecânica. Neste contexto os motores elétricos desempenham papel fundamental, em específico os motores elétricos de corrente continua que trabalham muito abaixo da sua capacidade nominal, com conseqüente baixa densidade de carga. Em ambiente industrial, estas características de trabalho dos motores CC geraram um consumo excessivo de escovas de carvão e também ataque no comutador, reduzindo a vida útil do motor, aumentando as horas de manutenção e o custo. O objetivo geral do presente trabalho é caracterizar os diferentes tipos de escovas de grafite utilizados em motores de corrente contínua e avaliar seu desempenho em função do processamento a que foi submetido durante sua fabricação, assim como determinar os ganhos mensuráveis e não mensuráveis quando a escova utilizada é a mais adequada à aplicação. As escovas foram produzidas por indústrias do setor e testadas em ambiente industrial, quanto ao seu desempenho e desgaste. Resultados preliminares evidenciam uma substancial alteração no desempenho destas escovas e no seu desgaste em função da sua microestrutura e da aplicação na qual é utilizada
The electric can be converted into thermal, luminous, electromagnetic, and also in mechanical energy. In this context the electric engines plays a fundamental role, specially that they work very below of its nominal capacity, with consequent decrease load density. In industrial environment, these characteristics of work of DC engines had also generated an extreme consumption of coal brushs and attack in the commutator reducing the useful life of the engine and increasing maintenance demand and cost. The general objective of the present work is to study the influence of the granulometry of the coal brush used in DC engines with the resistance to the consumption of the same ones, as well as in the performance presented by the commutator of the engine. Additionally, determining the measurable and not measurable profits when the brush used is adjusted to the application. The brushes had been produced by an industry of the sector and tested in industrial environment to evaluate their performance and consumption. Preliminary results evidence a substantial improvement in the performance of these brushes in function of its microstructure and the application in which it is used
Advisors/Committee Members: Rubens Maribondo do Nascimento, Antônio Eduardo Martinelli, Carlos Alberto Paskocimas.
Subjects/Keywords: Grafite; Escova; Porosidade; ENGENHARIA MECANICA; Graphite; Brush; Porosity
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APA (6th Edition):
Borges, A. N. (2007). Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura. (Thesis). Universidade Federal do Rio Grande do Norte. Retrieved from http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=2135
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):
Borges, Aldo Nonato. “Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura.” 2007. Thesis, Universidade Federal do Rio Grande do Norte. Accessed December 06, 2019.
http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=2135.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Borges, Aldo Nonato. “Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura.” 2007. Web. 06 Dec 2019.
Vancouver:
Borges AN. Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura. [Internet] [Thesis]. Universidade Federal do Rio Grande do Norte; 2007. [cited 2019 Dec 06].
Available from: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=2135.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Borges AN. Caracterização de escovas de grafite e avaliação do seu desempenho em função da microestrutura. [Thesis]. Universidade Federal do Rio Grande do Norte; 2007. Available from: http://bdtd.bczm.ufrn.br/tedesimplificado//tde_busca/arquivo.php?codArquivo=2135
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
25.
Porter, Shane Courtney.
The use of a rainfall simulator for brush control research on the Edwards Plateau region of Texas.
Degree: 2006, Texas A&M University
URL: http://hdl.handle.net/1969.1/3174
► The thicketization of the semi-arid region of the United States has resulted in a dramatic change allowing invasive woody species to dominate the landscape with…
(more)
▼ The thicketization of the semi-arid region of the United States has resulted in a dramatic
change allowing invasive woody species to dominate the landscape with an unknown
impact to the water budget. This landscape transformation has created a need to study
the hydrology of the region and in particular the effects of increased
brush on the water
cycle. To study the effects of invasive
brush on the water budget, a portable abovecanopy
rainfall simulator was developed for plot scale hydrologic research. The rainfall
simulator was tested at various field locations, including within the Edwards Plateau, to
replicate natural rainfall events on typical hillslope-scale plots. The rainfall simulator
was used to quantify aspects of the water budget for a 7 m by 14 m research plot on the
Edwards Plateau in Texas. Three rainfall simulation dates were selected for detailed
hydrologic analysis. Overall, throughfall accounted for 74% of the water applied to the
plot, while 26% of applied water was in the form of stemflow. Lateral subsurface flow
represented 33% of the water measured leaving the research plot. A notable result of
rainfall simulations was extensive lateral subsurface flow and no surface runoff. The
rainfall simulator has proven to be a cost-effective and efficient research tool for
replicating natural rainfall in arid and semi-arid environments.
Advisors/Committee Members: Munster, Clyde L. (advisor), Wilcox, Bradford P. (advisor), Mohanty, Binayak P. (committee member).
Subjects/Keywords: rainfall simulator; brush control
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APA (6th Edition):
Porter, S. C. (2006). The use of a rainfall simulator for brush control research on the Edwards Plateau region of Texas. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/3174
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):
Porter, Shane Courtney. “The use of a rainfall simulator for brush control research on the Edwards Plateau region of Texas.” 2006. Thesis, Texas A&M University. Accessed December 06, 2019.
http://hdl.handle.net/1969.1/3174.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Porter, Shane Courtney. “The use of a rainfall simulator for brush control research on the Edwards Plateau region of Texas.” 2006. Web. 06 Dec 2019.
Vancouver:
Porter SC. The use of a rainfall simulator for brush control research on the Edwards Plateau region of Texas. [Internet] [Thesis]. Texas A&M University; 2006. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1969.1/3174.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Porter SC. The use of a rainfall simulator for brush control research on the Edwards Plateau region of Texas. [Thesis]. Texas A&M University; 2006. Available from: http://hdl.handle.net/1969.1/3174
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
26.
Bazan, Roberto.
The Effect of Ashe Juniper Removal on Groundwater Recharge in the Edwards Aquifer.
Degree: 2011, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8636
► Understanding groundwater recharge rates has direct relevance for management of the Edwards Aquifer, which serves as the main source of fresh water for the city…
(more)
▼ Understanding groundwater recharge rates has direct relevance for management of the Edwards Aquifer, which serves as the main source of fresh water for the city of San Antonio and surrounding communities. As population around San Antonio continues to grow, so does the demand for water and the stress placed on the aquifer. A method that is commonly believed to augment water yields is
brush management. Over the last 150 years an increase in juniper density on the Edwards Plateau has coincided with decreasing streamflow. This has led many to believe that removing juniper would increase available water. Due to its karstic nature, the recharge zone of the Edwards Aquifer is assumed to be a prime location for augmenting water yields through vegetation manipulation.
This study assesses the dynamics of recharge and the effects of manipulating surface vegetation. To accomplish this, a shallow cave located in the Edwards Aquifer recharge zone in San Antonio, Texas was instrumented to monitor drip recharge in response to simulated rainfall events. In 2004, simulations were conducted over the cave to measure recharge rates with a dense Ashe juniper canopy. The data and observations from the initial simulations were used to establish a baseline with the juniper in place. In February 2008 the juniper stand was cleared and the rainfall simulations were reproduced in June and July 2008, and again in early June 2009. Results from the study indicated that even though the amount of rainfall reaching the surface increased, a decrease in the amount of recharge occurred. The decrease can be possibly be explained by the elimination of stemflow, which is believed to direct higher concentrations of water to preferential flow paths near the base of the tree, and an increase in surface runoff. However, because such a large portion of the water reaching the surface is not accounted for by the budget, it is difficult to conclude that a change in recharge did not occur at a larger scale.
Advisors/Committee Members: Wilcox, Bradford P. (advisor), Munster, Clyde L. (advisor), Smith, Patricia K. (committee member).
Subjects/Keywords: Ashe Juniper; brush management
…junipers does not occur
from deep sources.
Brush Control and Water Supply
Many believe that an… …2006). One method for improving water supply that has been
implemented is brush… …increase surface runoff and possibly lead to flooding. The
7
theory behind brush management is… …percentages of brush have the potential to significantly increase water
yield (Bednarz et al… …available, especially at the larger scales, which indicate effective gains through brush…
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APA ·
Chicago ·
MLA ·
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CSE |
Export
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Manager
APA (6th Edition):
Bazan, R. (2011). The Effect of Ashe Juniper Removal on Groundwater Recharge in the Edwards Aquifer. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8636
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):
Bazan, Roberto. “The Effect of Ashe Juniper Removal on Groundwater Recharge in the Edwards Aquifer.” 2011. Thesis, Texas A&M University. Accessed December 06, 2019.
http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8636.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Bazan, Roberto. “The Effect of Ashe Juniper Removal on Groundwater Recharge in the Edwards Aquifer.” 2011. Web. 06 Dec 2019.
Vancouver:
Bazan R. The Effect of Ashe Juniper Removal on Groundwater Recharge in the Edwards Aquifer. [Internet] [Thesis]. Texas A&M University; 2011. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8636.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Bazan R. The Effect of Ashe Juniper Removal on Groundwater Recharge in the Edwards Aquifer. [Thesis]. Texas A&M University; 2011. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8636
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Texas A&M University
27.
Demaso, Stephen.
Population Dynamics of Northern Bobwhites in Southern Texas.
Degree: 2010, Texas A&M University
URL: http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-191
► Northern bobwhites (Colinus virginianus) are an important cultural, ecological, and economical part of the southern Texas landscape. I used radio-telemetry data from 2000?2005, part of…
(more)
▼ Northern bobwhites (Colinus virginianus) are an important cultural, ecological, and economical part of the southern Texas landscape. I used radio-telemetry data from 2000?2005, part of a long-term, bobwhite study in southern Texas, to test the nest-concealment hypothesis, develop a stochastic simulation model for bobwhite populations, and evaluate the influence of
brush canopy coverage (BCC) on short- and long-term demographic performance of bobwhites.
Bobwhite nests tend to be situated in taller and denser vegetation than would be expected if nest-site location was a random process. I compared 4 microhabitat variables between successful (n = 135) and depredated nests (n = 118). I documented similar microhabitat attributes between successful and depredated nests. The discriminant function correctly classified only 48?59% of nest fates into the correct group, but only 18% of the variation in nest fate. Thus, my results did not support the nest-concealment hypothesis.
My stochastic simulation model for bobwhite populations is based on difference equations (?t = 3 months) and simulations run for 100 years using STELLA? 9.0.2. The probability of persistence for 100 years for the spring population was 74.2% and 72.5% for the fall population. Simulated population parameters were similar to those observed in the field for 5 of 6 population parameters. Only simulated male adult annual survival differed by 275.0% from field estimates. Despite this difference, my model appears to be a good predictor of bobwhite populations in the Rio Grande Plains of Texas.
I estimated bobwhite density, survival, and production (proportion of hens nesting, nesting attempts per hen, and clutch size) in 3 study areas with ~10%, ~25%, and >30% BBC. All demographic parameters were similar among the 3 BCC classes. However, simulation modeling indicated that long-term demographic performance was greater on the ~25% and >30% BCC classes. The probability of fall population persistence was greater in the ~25% (90.8%) and >30% (100.0%) BCC classes than in the ~10% BCC class (54.2%). My study highlights the shortcoming of considering only short-term effects when comparing habitat given that short- and long-term effects of habitat on demographic performance can differ.
Advisors/Committee Members: Hernandez, Fidel (advisor), Silvy, Nova J. (advisor), Brennan, Leonard A. (committee member), Grant, William E. (committee member), Wu, X. B. (committee member).
Subjects/Keywords: northern bobwhite; brush canopy coverage; Colinus virginianus; model; nest success; model
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APA (6th Edition):
Demaso, S. (2010). Population Dynamics of Northern Bobwhites in Southern Texas. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-191
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):
Demaso, Stephen. “Population Dynamics of Northern Bobwhites in Southern Texas.” 2010. Thesis, Texas A&M University. Accessed December 06, 2019.
http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-191.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Demaso, Stephen. “Population Dynamics of Northern Bobwhites in Southern Texas.” 2010. Web. 06 Dec 2019.
Vancouver:
Demaso S. Population Dynamics of Northern Bobwhites in Southern Texas. [Internet] [Thesis]. Texas A&M University; 2010. [cited 2019 Dec 06].
Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-191.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Demaso S. Population Dynamics of Northern Bobwhites in Southern Texas. [Thesis]. Texas A&M University; 2010. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-191
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
University of Akron
28.
Ranjan, Rajesh.
Surface Modification of Silica Nanoparticles.
Degree: PhD, Polymer Science, 2008, University of Akron
URL: http://rave.ohiolink.edu/etdc/view?acc_num=akron1206558086
► Surface modification of nanosized silica particles by polymer grafting is gaining attention. This can be attributed to the fact that it provides a unique…
(more)
▼ Surface modification of nanosized silica
particles by polymer grafting is gaining attention. This can be
attributed to the fact that it provides a unique opportunity to
engineer the interfacial properties of these modified particles; at
the same time the mechanical and thermal properties of the polymers
can be improved. Controlled free radical polymerization is a
versatile technique which affords control over molecular weight,
molecular weight distribution, architecture and functionalities of
the resulting polymer. Three commonly used controlled free radical
polymerizations include nitroxide- mediated polymerization (NMP),
atom transfer radical polymerization (ATRP) and reversible addition
fragmentation transfer (RAFT) polymerization. ATRP and RAFT
polymerization were explored in order to modify the silica surface
with well-defined polymer brushes. A novel
click-functionalized RAFT chain transfer agent (RAFT CTA) was
synthesized which opened up the possibility of using RAFT
polymerization and click chemistry together in surface
modification. Using this RAFT CTA, the surface of silica
nanoparticles was modified with polystyrene and polyacrylamide
brushes via the “grafting to” approach. Both tethered polystyrene
and polyacrylamide chains were found in the
brush regime. The
combination of ATRP and click chemistry was also explored for
surface modification. A combination of RAFT
polymerization and click chemistry was also studied to modify the
surface via the “grafting from” approach. Our strategy included the
(1) “grafting from” approach for
brush formation (2) facile click
reaction to immobilize the RAFT agent (3) synthesis of R-supported
chain transfer agent and (4) use of the more active
trithiocarbonate RAFT agent. Grafting density obtained by this
method was significantly higher than reported values in the
literature. Polystyrene (PS) grafted silica
nanoparticles were also prepared by a tandem process that
simultaneously employs reversible addition fragmentation transfer
(RAFT) polymerization and click chemistry. The click reaction
doesn’t interfere with RAFT polymerization. With a suitable choice
of a Cu(I) catalyst, it is possible to perform both RAFT
polymerization and click chemistry together. In a single pot
procedure, azide-modified silica, an alkyne-functionalized RAFT
agent and styrene were combined to produce the desired product. As
deduced by thermal gravimetric and elemental analysis, the grafting
density of PS on the silica in the tandem process was intermediate
between the “grafting to” and “grafting from” techniques. Relative
rates of RAFT polymerization and click reaction were altered to
control grafting density. ATRP was also used to
modify the surface of silica nanoparticles via the “grafting from”
approach. The surfaces of silica with homopolymers and diblock
copolymers brushes were modified using surface initiated ATRP. The
polymer grafted silica particles were characterized by FT-IR, TGA,
XPS and elemental analysis.
Advisors/Committee Members: Pugh, Colleen (Committee Chair), Quirk, Roderic (Advisor).
Subjects/Keywords: Polymers; silica; nanoparticle; polymer brush; surface modification; grafting density; hybrid nanopartcles
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APA ·
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ranjan, R. (2008). Surface Modification of Silica Nanoparticles. (Doctoral Dissertation). University of Akron. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=akron1206558086
Chicago Manual of Style (16th Edition):
Ranjan, Rajesh. “Surface Modification of Silica Nanoparticles.” 2008. Doctoral Dissertation, University of Akron. Accessed December 06, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=akron1206558086.
MLA Handbook (7th Edition):
Ranjan, Rajesh. “Surface Modification of Silica Nanoparticles.” 2008. Web. 06 Dec 2019.
Vancouver:
Ranjan R. Surface Modification of Silica Nanoparticles. [Internet] [Doctoral dissertation]. University of Akron; 2008. [cited 2019 Dec 06].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1206558086.
Council of Science Editors:
Ranjan R. Surface Modification of Silica Nanoparticles. [Doctoral Dissertation]. University of Akron; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1206558086
University of Akron
29.
Sun, Liang.
Structure and Dynamics of Swollen Polymer Brushes.
Degree: PhD, Polymer Science, 2017, University of Akron
URL: http://rave.ohiolink.edu/etdc/view?acc_num=akron1499675793233755
► A polymer brush is a monomolecular film in which each polymer chain is attached at one end to a surface or interface. Tremendous attention has…
(more)
▼ A polymer
brush is a monomolecular film in which each
polymer chain is attached at one end to a surface or interface.
Tremendous attention has been paid to both the basic science and
technology of polymer brushes, due to their special properties,
which stem from their unique structure arising from the tethering
of polymer chains. Especially, research and many applications
involve polymer brushes in the swollen state. The main objective of
the research presented in this dissertation was to determine the
structure and dynamics of polymer brushes under swollen
conditions.The structure of polystyrene brushes swollen in toluene
vapor has been determined using neutron reflectivity. For high
grafting density brushes, the scaling of the thickness of the
brush
swollen in solvent vapor with chain length and grafting density
agrees quantitatively with the scaling reported for densely grafted
brushes swollen in liquid. Deep in the
brush, next to the
substrate, the shape of the segment concentration profile is the
same whether the
brush is swollen by liquid or by vapor.
Differences in the segment concentration profile are manifested
primarily in the swollen
brush interface with the surrounding
fluid. The interface of the polymer
brush swollen in vapor is much
more abrupt than that of the same
brush swollen in liquid, which
agrees well with a simple SCF calculation. This sharper interface
should have important implications for fluctuations at the
brush
surface and the compressibility of the
brush surface in the swollen
state.The surface dynamics of polystyrene brushes swollen in
toluene vapor have been investigated using X-ray photon correlation
spectroscopy. No surface height fluctuations are observable in the
currently available experimental time and length scale window for
various strongly swollen brushes of grafting densities from 0.04 to
0.61 chains/nm
2 and swollen thicknesses from
11 to 105 nm. This is remarkable, considering how highly
plasticized the layers are from the standpoint of segmental
dynamics. The surfaces of the vapor swollen brushes behave like
solid surfaces on time scales and length scales pertinent to many
practical applications. We attribute slowing of the surface
fluctuations to the entropic penalty that has to be paid for
fluctuations (which are a collective motion) to occur. Even the
surface fluctuations of a 47 nm thick layer of liquid toluene atop
a swollen
brush are strongly altered by the presence of the
adjacent
brush chains.Polymer films containing a layer of
untethered chains on top of a
brush have been studied by probing
the diffusion dynamics of embedded gold nanoparticles with X-ray
photon correlation spectroscopy. We found that the local diffusion
slows significantly with an increase in the concentration of
segments from tethered chains. This change in mobility with depth
is more complicated than that envisioned in simple models of a
layer of untethered chains with bulk viscosity sitting on top of an
immovable
brush.
Advisors/Committee Members: Foster, Mark (Advisor), Dhinojwala, Ali (Committee Chair).
Subjects/Keywords: Polymers; Physics; Materials Science; swollen polymer brush; surface fluctuations; dynamics
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APA (6th Edition):
Sun, L. (2017). Structure and Dynamics of Swollen Polymer Brushes. (Doctoral Dissertation). University of Akron. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=akron1499675793233755
Chicago Manual of Style (16th Edition):
Sun, Liang. “Structure and Dynamics of Swollen Polymer Brushes.” 2017. Doctoral Dissertation, University of Akron. Accessed December 06, 2019.
http://rave.ohiolink.edu/etdc/view?acc_num=akron1499675793233755.
MLA Handbook (7th Edition):
Sun, Liang. “Structure and Dynamics of Swollen Polymer Brushes.” 2017. Web. 06 Dec 2019.
Vancouver:
Sun L. Structure and Dynamics of Swollen Polymer Brushes. [Internet] [Doctoral dissertation]. University of Akron; 2017. [cited 2019 Dec 06].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1499675793233755.
Council of Science Editors:
Sun L. Structure and Dynamics of Swollen Polymer Brushes. [Doctoral Dissertation]. University of Akron; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=akron1499675793233755
Louisiana State University
30.
Youm, Sang Gil.
Thin Films of Semiconducting Polymers and Block Copolymers by Surface-initiated Polymerization.
Degree: PhD, Chemistry, 2016, Louisiana State University
URL: etd-07112016-135402
;
https://digitalcommons.lsu.edu/gradschool_dissertations/1044
► The ability to control nanoscale morphology and molecular organization in organic semiconducting polymer thin films is an important prerequisite for enhancing the efficiency of organic…
(more)
▼ The ability to control nanoscale morphology and molecular organization in organic semiconducting polymer thin films is an important prerequisite for enhancing the efficiency of organic thin-film devices, including organic light-emitting and photovoltaic devices. The current “top-down” paradigm for making such devices is based on utilizing solution-based processing (e.g. spin-casting) of soluble semiconducting polymers. This approach typically provides only modest control over nanoscale molecular organization and polymer chain alignment. A promising alternative to using solutions of pre-synthesized semiconducting polymers pursues instead a “bottom-up” approach to prepare surface-grafted semiconducting polymer thin films by surface-initiated polymerization of small-molecule monomers. This dissertation mainly focuses on development of an efficient method to prepare semiconducting polymer thin films utilizing surface-initiated Kumada catalyst transfer polymerization (SI-KCTP). In chapter 2, we describe SI-KCTP with a new Ni(II) external catalytic initiator to prepare polythiophene (PT) thin films. We provided evidence that the surface-initiated polymerization occurs by the highly robust controlled (quasi-“living”) chain-growth mechanism. Extensive structural studies of the resulting thin films revealed detailed information on molecular organization and the bulk morphology of the films, and enabled further optimization of the polymerization protocol. Achieving such a complex mesoscale organization is virtually impossible with traditional methods relying on solution processing of pre-synthesized polymers. In addition to controlled bulk morphology, uniform molecular organization and stability, unique feature of SI-KCTP is that it can be used for the preparation of large-area uniformly nanopatterned polymer thin films. This was demonstrated using combination of particle lithography and surface-initiated polymerization. We expanded scope of the surface-initiated polymerization towards all-conjugated diblock copolymer (polythiophene-b-poly(para-phenylene)) thin films, which is described in chapter 3. In addition to the preparation of such films, we carried out detailed structural studies and investigated optoelectronic characteristics of the films. In chapter 4, we studied using SI-KCTP to prepare poly(3,4-ethylenedioxithophene) (PEDOT) thin films. PEDOT is a practically important highly conductive conjugated polymer. Our investigation of the properties of a surface-confined PEDOT film revealed that, after doping with iodine, the film became highly conductive, with conductivity comparable to that of inorganic semiconductors. Therefore, surface-confined PEDOT films may find applications in replacing traditional inorganic electrode for the fabrication of flexible organic electronics.
Subjects/Keywords: Kumada catalyst transfer polymerization; Conjugated polymer; polymer brush
Record Details
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Record Details
Similar Records
Cite
« Share
❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Youm, S. G. (2016). Thin Films of Semiconducting Polymers and Block Copolymers by Surface-initiated Polymerization. (Doctoral Dissertation). Louisiana State University. Retrieved from etd-07112016-135402 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1044
Chicago Manual of Style (16th Edition):
Youm, Sang Gil. “Thin Films of Semiconducting Polymers and Block Copolymers by Surface-initiated Polymerization.” 2016. Doctoral Dissertation, Louisiana State University. Accessed December 06, 2019.
etd-07112016-135402 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1044.
MLA Handbook (7th Edition):
Youm, Sang Gil. “Thin Films of Semiconducting Polymers and Block Copolymers by Surface-initiated Polymerization.” 2016. Web. 06 Dec 2019.
Vancouver:
Youm SG. Thin Films of Semiconducting Polymers and Block Copolymers by Surface-initiated Polymerization. [Internet] [Doctoral dissertation]. Louisiana State University; 2016. [cited 2019 Dec 06].
Available from: etd-07112016-135402 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1044.
Council of Science Editors:
Youm SG. Thin Films of Semiconducting Polymers and Block Copolymers by Surface-initiated Polymerization. [Doctoral Dissertation]. Louisiana State University; 2016. Available from: etd-07112016-135402 ; https://digitalcommons.lsu.edu/gradschool_dissertations/1044
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