subject:(Iron)

1. Jhurry, Nema. Biophysical Investigation of the 'Ironome' of Jurkat Cells and Saccharomyces cerevisiae.

Degree: 2013, Texas Digital Library

URL: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66568

► The speciation of iron in intact Jurkat cells and their isolated mitochondria was assessed using biophysical methods. [Fe4S4]^(2+) clusters, low-spin (LS) Fe^(II) heme centers, non-heme… (more)

▼ The speciation of iron in intact Jurkat cells and their isolated mitochondria was assessed using biophysical methods. [Fe4S4]^(2+) clusters, low-spin (LS) Fe^(II) heme centers, non-heme high-spin (NHHS) FeII species, ferritin-like material and FeIII oxyhydroxide nanoparticles were detected, via M??ssbauer, in intact Jurkat cells and their isolated mitochondria. EPR spectroscopy was used to quantify Fe-containing species in the respiratory complexes. Contributions from heme a, b and c centers were quantified using electronic absorption spectroscopy. Results were collectively assessed to estimate the first ???ironome??? profile of a human cell. The Fe content of Jurkat cells grown on transferrin-bound iron (TBI) and Fe^(III) citrate (FC), and of isolated mitochondria therefrom, was characterized. On average, only 400 ?? 100 Fe???s loaded per ferritin complex, regardless of the medium Fe concentration. The extent of nanoparticle formation scaled nonlinearly with the concentration of FC in the medium. Nanoparticle formation was not strongly correlated with ROS damage. Cells could utilize nanoparticles Fe, converting them into essential Fe forms. Cells grown on galactose rather than glucose respired faster, grew slower, exhibited more ROS damage, and generally contained more nanoparticles. Cells grown with TBI rather than FC contained lower Fe concentrations, more ferritin and fewer nanoparticles. Frataxin-deficient cells contained more nanoparticles than comparable WT cells. Data were analyzed by a chemically-based mathematical model. Fermenting Saccharomyces cerevisiae cells grown with varying [Fe] were also studied. The high-affinity Fe import pathway was active only in Fe-deficient cells. Whether Fe-deficient cells were grown under fermenting or respirofermenting conditions had no effect on Fe content; such cells prioritized their use of Fe to essential forms devoid of nanoparticles and vacuolar Fe. Fermenting cells grown on Fe-sufficient and Fe-overloaded medium contained 400 ??? 450 ??M Fe. In these cells the concentration of nonmitochondrial NHHS Fe^(II) declined 3-fold, relative to in Fe-deficient cells, whereas the concentration of vacuolar NHHS Fe^(III) increased to a limiting cellular concentration of ~ 300 ??M. Isolated mitochondria contained more NHHS Fe^(II) ions and substantial amounts of Fe^(III) nanoparticles. The Fe contents of cells grown with excessive Fe in the medium were similar over a 250-fold change of nutrient Fe levels. Advisors/Committee Members: Lindahl, Paul A (advisor).

Subjects/Keywords: iron

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APA (6^th Edition):

Jhurry, N. (2013). Biophysical Investigation of the 'Ironome' of Jurkat Cells and Saccharomyces cerevisiae. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66568

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jhurry, Nema. “Biophysical Investigation of the 'Ironome' of Jurkat Cells and Saccharomyces cerevisiae.” 2013. Thesis, Texas Digital Library. Accessed March 04, 2021. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66568.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jhurry, Nema. “Biophysical Investigation of the 'Ironome' of Jurkat Cells and Saccharomyces cerevisiae.” 2013. Web. 04 Mar 2021.

Vancouver:

Jhurry N. Biophysical Investigation of the 'Ironome' of Jurkat Cells and Saccharomyces cerevisiae. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66568.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jhurry N. Biophysical Investigation of the 'Ironome' of Jurkat Cells and Saccharomyces cerevisiae. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66568

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

2. Cockrell, Allison Leigh. Investigating the Roles of Vacuoles in Iron Trafficking in Saccharomyces cerevisiae.

Degree: 2013, Texas Digital Library

URL: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66665

► Transition metals play essential roles in biological systems, but Fe can also be toxic to cells. In order to maintain this balance between necessity and… (more)

▼ Transition metals play essential roles in biological systems, but Fe can also be toxic to cells. In order to maintain this balance between necessity and toxicity mechanisms are employed for regulating and storing intracellular Fe. In Saccharomyces cerevisiae, vacuoles are responsible for sequestering, storing, and supplying Fe to the cytosol. Many of the proteins and regulatory pathways involved in Fe trafficking and storage in S. cerevisiae have been identified, but the forms of Fe which are involved in these processes have not been fully characterized. In these studies, biophysical and bioanalytical techniques were used to study intracellular Fe distributions in S. cerevisiae cells and organelles. Ultimately, Fe-containing species were biophysically characterized and absolute Fe concentrations in cells and organelles were quantified. The motivation for these studies stemmed from previous studies which revealed that the majority of the whole-cell Fe is a non-heme, high-spin (NHHS) form of Fe^(3+). This Fe is not localized to the mitochondria. The purpose of these studies was to determine if the vacuoles contained this NHHS Fe^(3+). A large-scale isolation procedure was developed to obtain purified vacuoles from S. cerevisiae and to investigate the Fe in these organelles. M??ssbauer and EPR analysis revealed that the primary form of Fe in vacuoles is a mononuclear, NHHS Fe^(3+) species. A second form of Fe was also observed as superparamagnetic ferric phosphate nanoparticles (NP). By investigating model compounds of Fe and polyphosphate we determined that a shift in vacuolar pH induces the conversion between NHHS Fe^(3+) and NP. These results showed that there are at least two forms of Fe in vacuoles, and that the ratio of these two forms is dependent upon the pH of these organelles. Biophysical analyses of whole cells also revealed the presence of low concentrations of a non-heme, high-spin Fe^(2+) species. The goal of these next projects was to determine if this NHHS Fe^(2+) species was localized to the cytosol. Genetic strains lacking or over-expressing the vacuolar Fe import protein Ccc1p were studied by M??ssbauer spectroscopy (???CCC1 and CCC1-up, respectively). ???CCC1 cells showed low vacuolar Fe (NHHS Fe3+ and NP), and increased NHHS Fe^(2+). We hypothesize that this NHHS Fe^(2+) is cytosolic Fe. We also propose that this NHHS Fe^(2+) is involved in the regulating intracellular Fe levels. CCC1-up cells accumulated more Fe than wild-type (WT) cells, and showed elevated levels of vacuolar Fe (NHHS Fe^(3+) and NP). These cells also accumulated high levels of NHHS Fe^(2+). The CCC1-up cells exhibited an adenine deficient phenotype, where the cells developed a red color during growth. With excess adenine the levels of NHHS Fe^(2+) declined, which indicated that this Fe accumulation was related to adenine deficiency. We conclude that adenine deficiency leads to the accumulation of a sequestered (possibly vacuolar) form of NHHS Fe^(2+). Overall, we have identified two separate pools of NHHS Fe^(2+) in… Advisors/Committee Members: Lindahl, Paul A (advisor).

Subjects/Keywords: Iron

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APA (6^th Edition):

Cockrell, A. L. (2013). Investigating the Roles of Vacuoles in Iron Trafficking in Saccharomyces cerevisiae. (Thesis). Texas Digital Library. Retrieved from http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66665

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cockrell, Allison Leigh. “Investigating the Roles of Vacuoles in Iron Trafficking in Saccharomyces cerevisiae.” 2013. Thesis, Texas Digital Library. Accessed March 04, 2021. http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66665.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cockrell, Allison Leigh. “Investigating the Roles of Vacuoles in Iron Trafficking in Saccharomyces cerevisiae.” 2013. Web. 04 Mar 2021.

Vancouver:

Cockrell AL. Investigating the Roles of Vacuoles in Iron Trafficking in Saccharomyces cerevisiae. [Internet] [Thesis]. Texas Digital Library; 2013. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66665.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cockrell AL. Investigating the Roles of Vacuoles in Iron Trafficking in Saccharomyces cerevisiae. [Thesis]. Texas Digital Library; 2013. Available from: http://hdl.handle.net/1969; http://hdl.handle.net/2249.1/66665

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

3. Grover, Deeksha. Genesis of iron oxides in unsaturated porous media.

Degree: PhD, Environmental Science, 2010, Oregon State University

URL: http://hdl.handle.net/1957/18700

► The kinetics of physical and chemical processes controlling the precipitation of iron oxide minerals in unsaturated media were investigated in this study. The characteristic morphology,… (more)

▼ The kinetics of physical and chemical processes controlling the precipitation of iron oxide minerals in unsaturated media were investigated in this study. The characteristic morphology, mineralogy, and chemistry of iron oxides were also explored. Laboratory column experiments using fine and coarse grades of silica sand were conducted to compare the abiotic and biotic mechanisms governing the formation of Fe(III) oxides in unsaturated porous media. The samples of iron precipitates were analyzed using x-ray diffraction (XRD), scanning electron microscopy (SEM) and optical microscopy to identify the mineral and elemental composition of iron oxides. Two sets of iron bands appeared during the course of the experiments. Red oxidized bands (ferrihydrite) were formed at the upper extent of the capillary fringe. Whereas, black bands (magnetite) were formed below the oxidized iron bands. Additional visual observations were made to distinguish between abiotic and biotic origins of iron oxide minerals. A conceptual mechanistic framework for abiotic iron oxide formation was also proposed leading to the development of the kinetic equations for an unsaturated system that was exposed to a source of reduced iron at one end and oxygen at the other end. Finally, a numerical model was developed to investigate abiotic iron oxide formation with time at a particular location within an unsaturated porous media under different scenarios. These scenarios could include the use of different media, different unsaturation conditions and different time scales. This study reveals that abiotic iron oxide formation in unsaturated media is mainly a diffusion controlled mechanism. The location of iron oxide precipitation is regulated by the diffusion rates of Fe(II) (aq) and O₂ (g) and thus elucidates the importance of air-water and water-mineral interface properties and diffusive gradients on iron transformations in natural systems. These results can be implied to explain the formation of Fe (III) oxide cemented bands under hydrological processes and time scale in systems representative of natural environments. Advisors/Committee Members: Baham, John (advisor), Wood, Brian (committee member).

Subjects/Keywords: iron oxides; Iron oxides

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APA (6^th Edition):

Grover, D. (2010). Genesis of iron oxides in unsaturated porous media. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/18700

Chicago Manual of Style (16^th Edition):

Grover, Deeksha. “Genesis of iron oxides in unsaturated porous media.” 2010. Doctoral Dissertation, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/18700.

MLA Handbook (7^th Edition):

Grover, Deeksha. “Genesis of iron oxides in unsaturated porous media.” 2010. Web. 04 Mar 2021.

Vancouver:

Grover D. Genesis of iron oxides in unsaturated porous media. [Internet] [Doctoral dissertation]. Oregon State University; 2010. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/18700.

Council of Science Editors:

Grover D. Genesis of iron oxides in unsaturated porous media. [Doctoral Dissertation]. Oregon State University; 2010. Available from: http://hdl.handle.net/1957/18700

University of Kansas

4. Scroggs, Sarah Catherine. Maternal Factors Influencing Infant Total Body Iron at Birth and Four Months of Age.

Degree: MS, Dietetics & Nutrition, 2011, University of Kansas

URL: http://hdl.handle.net/1808/8191

► Iron is necessary in fetal development, however little research has been conducted to assess factors that affect both maternal and fetal total body iron. The… (more)

Subjects/Keywords: Nutrition; Body iron; Infants; Iron

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APA (6^th Edition):

Scroggs, S. C. (2011). Maternal Factors Influencing Infant Total Body Iron at Birth and Four Months of Age. (Masters Thesis). University of Kansas. Retrieved from http://hdl.handle.net/1808/8191

Chicago Manual of Style (16^th Edition):

Scroggs, Sarah Catherine. “Maternal Factors Influencing Infant Total Body Iron at Birth and Four Months of Age.” 2011. Masters Thesis, University of Kansas. Accessed March 04, 2021. http://hdl.handle.net/1808/8191.

MLA Handbook (7^th Edition):

Scroggs, Sarah Catherine. “Maternal Factors Influencing Infant Total Body Iron at Birth and Four Months of Age.” 2011. Web. 04 Mar 2021.

Vancouver:

Scroggs SC. Maternal Factors Influencing Infant Total Body Iron at Birth and Four Months of Age. [Internet] [Masters thesis]. University of Kansas; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1808/8191.

Council of Science Editors:

Scroggs SC. Maternal Factors Influencing Infant Total Body Iron at Birth and Four Months of Age. [Masters Thesis]. University of Kansas; 2011. Available from: http://hdl.handle.net/1808/8191

University of Victoria

5. Schallenberg, Christina. An investigation into the sources of iron and iron(II) in HNLC high-latitude oceans.

Degree: School of Earth and Ocean Sciences, 2015, University of Victoria

URL: http://hdl.handle.net/1828/6265

► High nutrient, low chlorophyll (HNLC) regions, where the availability of iron (Fe) limits primary production, comprise approximately 40% of the global ocean. Variability in Fe… (more)

▼ High nutrient, low chlorophyll (HNLC) regions, where the availability of iron (Fe) limits primary production, comprise approximately 40% of the global ocean. Variability in Fe supply to these regions has the potential to impact Earth's climate by affecting the efficiency of the biological carbon pump, and thereby carbon dioxide uptake by the oceans. Characterizing Fe sources to HNLC regions is thus crucial for a better understanding of the connections and feedbacks between the ocean and climate change. This work addresses the question of Fe supply to two HNLC regions: the Southern Ocean and the subarctic northeast (NE) Pacific Ocean. In both regions, dissolved Fe (dFe) and the reduced form of iron, Fe(II), were measured in the water column. In the Southern Ocean, measurements were undertaken under the seasonal pack ice in the East Antarctic south of Australia. The results indicate that the sea ice represents a significant dFe source for the under-ice water column in spring, and that the Fe delivered from brine drainage and sea ice-melt likely contributes to the formation of the spring bloom at the ice edge. Shelf sediments were also found to supply dFe to the water column. Their effect was most pronounced near the shelf break and at depth, but offshore transport of Fe-enriched waters was also implicated. Fe(II) concentrations in spring were very low, most likely due to a lack of electron donors in the water column and limited solar radiation underneath the sea ice. Repeat measurements along a transect in the subarctic NE Pacific indicate that shelf sediments supply dFe and Fe(II) at depth, but their influence does not appear to extend offshore beyond several hundred kilometres. Episodic events such as the passage of sub-mesoscale eddies may transport subsurface waters a limited distance from the shelf break, supplying Fe(II) in a depth range where upwelling and deep mixing could bring it to the surface. Offshore, dFe shows little variability except in June 2012, where an aerosol deposition event is suspected to have increased dFe concentrations at depth. Fe(II) concentrations offshore are generally low, but show transient maxima at depth that likely result from remineralization processes in the oxygen deficient zone that stretches from ~600 to 1400 m depth in the subarctic NE Pacific. Elevated Fe(II) concentrations at depth were also observed in conjunction with the aerosol deposition event, which might indicate Fe(II) production associated with settling particles. However, the aerosol deposition event, which most likely stemmed from forest fires in Siberia, did not appear to trigger a phytoplankton bloom in surface waters, possibly due to a lack of Fe fertilization from the deposited material, or due to toxic effects on the resident phytoplankton community. Dust deposition from the atmosphere is considered a major Fe supply mechanism to remote HNLC regions, but the factors affecting Fe solubility of dust are poorly constrained. A laboratory experiment was conducted to test whether the presence of… Advisors/Committee Members: Cullen, Jay T. (supervisor).

Subjects/Keywords: iron; iron(II); GEOTRACES; HNLC

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APA (6^th Edition):

Schallenberg, C. (2015). An investigation into the sources of iron and iron(II) in HNLC high-latitude oceans. (Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/6265

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Schallenberg, Christina. “An investigation into the sources of iron and iron(II) in HNLC high-latitude oceans.” 2015. Thesis, University of Victoria. Accessed March 04, 2021. http://hdl.handle.net/1828/6265.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Schallenberg, Christina. “An investigation into the sources of iron and iron(II) in HNLC high-latitude oceans.” 2015. Web. 04 Mar 2021.

Vancouver:

Schallenberg C. An investigation into the sources of iron and iron(II) in HNLC high-latitude oceans. [Internet] [Thesis]. University of Victoria; 2015. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1828/6265.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Schallenberg C. An investigation into the sources of iron and iron(II) in HNLC high-latitude oceans. [Thesis]. University of Victoria; 2015. Available from: http://hdl.handle.net/1828/6265

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

6. -3060-7095. Roles for multiple iron acquisition systems in Vibrio cholerae.

Degree: PhD, Microbiology, 2016, University of Texas – Austin

URL: http://hdl.handle.net/2152/46373

► Vibrio cholerae is a highly successful human pathogen and environmental organism. To thrive in these diverse environments, it must encode the tools necessary to acquire… (more)

▼ Vibrio cholerae is a highly successful human pathogen and environmental organism. To thrive in these diverse environments, it must encode the tools necessary to acquire essential nutrients such as iron. A number of V. cholerae iron acquisition systems have been identified, and altogether are necessary for growth; however, the roles of each individual system are poorly understood. To test the roles of individual systems, we generated a series of mutants in which only one of the four systems, Feo, Fbp, Vct, and Vib, that support iron acquisition on unsupplemented LB remains functional. Analyses of these mutants under different growth conditions demonstrate that these systems are not redundant. They are limited by substrate availability; the Fe2+-specific transporter, Feo, fails to stimulate growth in environments which favor Fe3+ and the Fe3+-specific transporter, Fbp, fails to stimulate growth in environments which favor Fe2+. While the Vct system transports high-affinity iron binding compounds, or siderophores, this system also supports robust growth in the presence of ascorbate, suggesting Fe-ascorbate as a potential substrate. A strain defective in all four systems has a severe growth defect in aerobic conditions, but accumulates iron and grows at wild-type levels in the absence of oxygen. These data support the presence of an additional, unidentified iron transporter in V. cholerae which does not share apparent homology to known iron transporters from other organisms. Further, V. cholerae VciB plays a role in iron acquisition by promoting the reduction of Fe3+ to Fe2+. Deletion of the major NADH dehydrogenase, Na+-NQR alters the kinetics of iron reduction; as such, we propose a model whereby VciB mediates reduction of iron by re-directing electrons from the electron transport chain. VciB supports Fe2+ transport through the Feo system, as strains dependent on Feo are stimulated by the presence of vciB. Analyses of VciB orthologs indicate a shared function for a family of proteins of previously uncharacterized function. In total, these studies provide new insights into the functional roles of different V. cholerae systems involved in iron acquisition. Advisors/Committee Members: Payne, Shelley M. (advisor), Whiteley, Marvin (committee member), Davies, Bryan (committee member), Molineux, Ian (committee member), Que, Emily (committee member).

Subjects/Keywords: Prokaryotic iron transport; Iron reduction

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APA (6^th Edition):

-3060-7095. (2016). Roles for multiple iron acquisition systems in Vibrio cholerae. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/46373

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-3060-7095. “Roles for multiple iron acquisition systems in Vibrio cholerae.” 2016. Doctoral Dissertation, University of Texas – Austin. Accessed March 04, 2021. http://hdl.handle.net/2152/46373.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-3060-7095. “Roles for multiple iron acquisition systems in Vibrio cholerae.” 2016. Web. 04 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-3060-7095. Roles for multiple iron acquisition systems in Vibrio cholerae. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2152/46373.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-3060-7095. Roles for multiple iron acquisition systems in Vibrio cholerae. [Doctoral Dissertation]. University of Texas – Austin; 2016. Available from: http://hdl.handle.net/2152/46373

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Oregon State University

7. Ghannam, Musa. Chelating agents in the drug dosage design of iron preparations.

Degree: MS, Pharmacy, 1981, Oregon State University

URL: http://hdl.handle.net/1957/42433

► The role of iron in the body is well known for it is a component of hemoglobin, myoglobin, cytochrome, enzyme catalase and peroxidase. Iron deficiency… (more)

▼ The role of iron in the body is well known for it is a component of hemoglobin, myoglobin, cytochrome, enzyme catalase and peroxidase. Iron deficiency anemia is widespread among vulnerable groups in industrialized societies and in the general population of tropical developing areas. In the United States there are ten million women with no iron reserves to meet the physiological needs of menstruation and pregnancy. The normal diet has five times the total amount of needed to maintain iron balance but, unfortunately, less than ten percent is absorbed. The absorption of iron has been increased by combining it with reducing agents such as ascorbic acid. Also it was found that protein uptake is necessary for adequate iron absorption. Increase in absorption was noted when iron was combined with chelating agents. It was suggested that these chelating agents bind iron strongly, forming a stable ring complex which seems to be necessary to maintain it in a soluble and permeable form. The purpose of this thesis research was to determine the effect of amino acids on iron absorption. The amino acids were glycine, 1. proline, d.1. tryptophan, 1. asparagine, d.1. alanine, d.1. phenylalanine, d.1. leucine, serine, d.1. methionine, and 1. isoleucine. Ferrous sulphate was combined with each of the amino acids in a molar ratio of 1:2. Iron-59 was used as a tracer. At various time periods after oral administration to rats, blood samples were collected from the rats' toes. At the end of four hours, the animals were sacrificed and liver, kidney, muscle, heart and brain samples were taken from the animals. All blood and organ samples were counted using a solid scintillation counter. All amino acids increased iron absorption, but the increase was most notable in asparagine, and then glycine. No correlation was found between stability constants of iron with amino acids and initial rate of absorption or area under the curve. In the organs, iron was found mostly in the liver. Lesser amounts were found in the heart and kidney, and very small amounts in the muscle and brain. Glycine - iron and control tablets were prepared using the direct compression method. Glycine was chosen rather than asparagine because it is much cheaper. These tablets were activated in the OSU TRIGA Reactor for four hours with a neutron flux of 3x10¹² neutron/cm² /sec. These tablets were administered to groups of four rabbits. Blood samples were collected from their ears using the same sampling times as for rats. At the end of four hours the animals were sacrificed and organ samples were taken from the animals. All these samples were counted as before. Results were analyzed using PROPHET¹ and show that iron is absorbed much better when administered with glycine than when administered alone. Advisors/Committee Members: Ayres, James W. (advisor).

Subjects/Keywords: Iron

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ghannam, M. (1981). Chelating agents in the drug dosage design of iron preparations. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42433

Chicago Manual of Style (16^th Edition):

Ghannam, Musa. “Chelating agents in the drug dosage design of iron preparations.” 1981. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/42433.

MLA Handbook (7^th Edition):

Ghannam, Musa. “Chelating agents in the drug dosage design of iron preparations.” 1981. Web. 04 Mar 2021.

Vancouver:

Ghannam M. Chelating agents in the drug dosage design of iron preparations. [Internet] [Masters thesis]. Oregon State University; 1981. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/42433.

Council of Science Editors:

Ghannam M. Chelating agents in the drug dosage design of iron preparations. [Masters Thesis]. Oregon State University; 1981. Available from: http://hdl.handle.net/1957/42433

Oregon State University

8. Hulett, Henry Russel. A spectrophotelometric method for the determination of iron.

Degree: MS, Chemistry, 1942, Oregon State University

URL: http://hdl.handle.net/1957/52082

Subjects/Keywords: Iron

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hulett, H. R. (1942). A spectrophotelometric method for the determination of iron. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/52082

Chicago Manual of Style (16^th Edition):

Hulett, Henry Russel. “A spectrophotelometric method for the determination of iron.” 1942. Masters Thesis, Oregon State University. Accessed March 04, 2021. http://hdl.handle.net/1957/52082.

MLA Handbook (7^th Edition):

Hulett, Henry Russel. “A spectrophotelometric method for the determination of iron.” 1942. Web. 04 Mar 2021.

Vancouver:

Hulett HR. A spectrophotelometric method for the determination of iron. [Internet] [Masters thesis]. Oregon State University; 1942. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1957/52082.

Council of Science Editors:

Hulett HR. A spectrophotelometric method for the determination of iron. [Masters Thesis]. Oregon State University; 1942. Available from: http://hdl.handle.net/1957/52082

Texas A&M University

9. Holmes-Hampton, Gregory. Biophysical Probes of Iron Metabolism in Yeast Cells, Mitochondria, and Mouse Brains.

Degree: PhD, Chemistry, 2012, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11418

► Iron is essential in nearly all organisms. It is a cofactor in many proteins and enzymes. This transition metal can also be toxic because it… (more)

▼ Iron is essential in nearly all organisms. It is a cofactor in many proteins and enzymes. This transition metal can also be toxic because it participates in reactions which produce reactive oxygen species. To avoid these toxic effects while still being used for essential processes, the cell must regulate tightly iron import, metabolism, trafficking, and homeostasis. These processes were studied using biophysical methods centered on Mossbauer spectroscopy supplemented by electron paramagnetic resonance, electronic absorption spectroscopy, and inductively coupled plasma mass spectrometry. This integrated biophysical approach was applied to yeast cells, isolated yeast mitochondria, and mouse brains. We determined the concentration of Fe, and the proportion of that Fe present as iron-sulfur clusters, heme centers, mononuclear nonheme centers, and as Fe3+ oxyhydroxide (phosphate) nanoparticles for each system. In yeast, the dependence of metabolic mode of growth and iron in the growth medium on this distribution was studied. Approximately three-quarters of the iron in fermenting cells was located in vacuoles, where it was present as high-spin mononuclear Fe3+ species with rhombic symmetry. The remaining quarter was present in the mitochondria. In fermenting mitochondria 4 distinct species of iron were observed, including [Fe4S4]2+ clusters and low-spin Fe2+ hemes arising from respiratory complexes, non-heme high spin (NHHS) Fe2+ species, high spin nonheme Fe3+ species, and nanoparticles. These distributions (in both the cells and mitochondria) change when the cells are grown on iron deficient medium but remained relatively unaltered as iron in the growth medium was increased. Respiring cells had less Fe associated with vacuoles, and more Fe present as HS Fe2+. Respiring mitochondria contain more [Fe4S4]2+ clusters and low-spin Fe2+ hemes, more S = 1/2 [Fe2S2]1+ clusters, and less NHHS Fe2+, HS Fe3+ species and Fe3+ nanoparticles. These changes were rationalized by assuming that the NHHS Fe2+ and Fe3+ species, and the nanoparticles were in equilibrium within the matrix of the mitochondria, and that the Fe2+ species served as feedstock for the synthesis of iron-sulfur clusters and heme centers. The iron in the mouse brain consisted mostly of [Fe4S4]2+ clusters and Fe2+ hemes from mitochondria respiratory complexes, and of ferritin, an Fe storage protein complex. NHHS Fe2+ and Fe3+ species were also observed. The ratio of stored Fe to mitochondrial Fe was sensitive to age. The brains of prenatal animals were dominated by ferritin. Following birth up to the first 4 weeks of life, there was an increase in mitochondrial Fe and a decline of ferritin Fe. Beyond 4 weeks up to 58 weeks, levels of ferritin increased and mitochondrial Fe remained constant. The brains of mice fed an Fe-deficient diet were also studied; most of the Fe in these brains was present as mitochondrial Fe, with little stored as ferritin. A model was developed to explain these changes. Advisors/Committee Members: Lindahl, Paul A. (advisor), Cremer, Paul S. (committee member), Raushel, Frank M. (committee member), Hilty, Christian B. (committee member).

Subjects/Keywords: Iron-ome; Iron Trafficking; Iron Metabolism; Iron Homeostasis; Mössbauer spectroscopy

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APA (6^th Edition):

Holmes-Hampton, G. (2012). Biophysical Probes of Iron Metabolism in Yeast Cells, Mitochondria, and Mouse Brains. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11418

Chicago Manual of Style (16^th Edition):

Holmes-Hampton, Gregory. “Biophysical Probes of Iron Metabolism in Yeast Cells, Mitochondria, and Mouse Brains.” 2012. Doctoral Dissertation, Texas A&M University. Accessed March 04, 2021. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11418.

MLA Handbook (7^th Edition):

Holmes-Hampton, Gregory. “Biophysical Probes of Iron Metabolism in Yeast Cells, Mitochondria, and Mouse Brains.” 2012. Web. 04 Mar 2021.

Vancouver:

Holmes-Hampton G. Biophysical Probes of Iron Metabolism in Yeast Cells, Mitochondria, and Mouse Brains. [Internet] [Doctoral dissertation]. Texas A&M University; 2012. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11418.

Council of Science Editors:

Holmes-Hampton G. Biophysical Probes of Iron Metabolism in Yeast Cells, Mitochondria, and Mouse Brains. [Doctoral Dissertation]. Texas A&M University; 2012. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11418

University of Johannesburg

10. da Silva, Richard. Distribution and geochronology of unconformity-bound sequences in paleoproterozoic Elim-Olifantshoek red beds: implications for timing of formation of Sishen-type iron ore and heavy carbonate carbonisotope excursion.

Degree: 2012, University of Johannesburg

URL: http://hdl.handle.net/10210/6103

►

M.Sc.

Bracketing the depositional age of the Gamagara/Mapedi to Lucknow and Olifantshoek succession in Griqualand West is important because it not only represents one of… (more)

▼

M.Sc.

Bracketing the depositional age of the Gamagara/Mapedi to Lucknow and Olifantshoek succession in Griqualand West is important because it not only represents one of the oldest known red bed successions in the world but also hosts some of the first well preserved lateritic soil profiles and carbonates with heavy 13C values traditionally correlated with the so-called Lomagundi carbonate carbon excursion. In addition the ancient supergene very large high-grade hematite iron ore deposits of the Sishen-Postmasburg area on the Maremane dome are associated with the erosional unconformity at the base of the Gamagara Formation (a lateral equivalent of the Mapedi Formation). However, the depositional age of especially the Gamagara/Mapedi to Lucknow succession is under dispute because it has been considered a) correlative to the lower part of the Waterberg Group in the Transvaal area, with the implication that it is younger than the Bushveld Complex with an age of ~2,054 Ga, and b) correlative to the Dwaalheuwel-Magaliesberg succession of the pre-Bushveld Pretoria Group of the Transvaal Supergroup in the Transvaal area. The upper age limit of the Gamagara/Mapedi to Lucknow succession is defined by 1,92 Ga felsic volcanics in the overlying Neylan-Hartley succession of the Olifantshoek Group. The Hartley Lava Formation is overlain by Volop quartzites. This study involves age determinations of detrital zircon populations extracted from the basal Doornfontein conglomerate member of the Gamagara/Mapedi succession, and quartzites of the Gamagara/Mapedi, Lucknow, Neylan, Hartley and Volop Formations at various localities in Griqualand West. Based on field work, three unconformity-bound sequences are defined, namely the Gamagara/Mapedi-Lucknow, Neylan-Hartley and Volop sequences. Most interestingly quartzites of the Gamagara/Mapedi-Lucknow sequence contain abundant zircons with ages similar to that of the Bushveld Complex at ~2,054-2,06 Ga in addition to zircons as young as ~1,98-2,01 Ga. An exception is results on one sample of the Doornfontein Member analyzed so far (it is from the Rooinekke iron ore mine south of Postmasburg) that contains only zircons that are older than the Bushveld Complex with a rather prominent youngest population bracketed between 2,2 Ga and 2,32 Ga. The youngest detrital zircon populations in the Neylan-Hartley sequence are either slightly older than the Hartley lava or contain zircons with similar age to Hartley felsic lavas at 1,92 Ga. This sequence thus appears to have developed immediately prior to and coeval with Hartley volcanism. The overlying Volop sequence contains abundant zircons as young as ~1,89 Ga. The results clearly illustrate that the Gamagara/Mapedi to Lucknow succession is certainly not a lateral correlative of the pre-Bushveld Dwaalheuwel-Magaliesberg succession of the Pretoria Group. Rather it should be considered time-equivalent lower parts of the Waterberg Group in the Transvaal area. This implies that the heavy carbonate carbon excursion known from the Lucknow Formation is at…

Subjects/Keywords: Iron ore

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APA (6^th Edition):

da Silva, R. (2012). Distribution and geochronology of unconformity-bound sequences in paleoproterozoic Elim-Olifantshoek red beds: implications for timing of formation of Sishen-type iron ore and heavy carbonate carbonisotope excursion. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/6103

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

da Silva, Richard. “Distribution and geochronology of unconformity-bound sequences in paleoproterozoic Elim-Olifantshoek red beds: implications for timing of formation of Sishen-type iron ore and heavy carbonate carbonisotope excursion.” 2012. Thesis, University of Johannesburg. Accessed March 04, 2021. http://hdl.handle.net/10210/6103.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

da Silva, Richard. “Distribution and geochronology of unconformity-bound sequences in paleoproterozoic Elim-Olifantshoek red beds: implications for timing of formation of Sishen-type iron ore and heavy carbonate carbonisotope excursion.” 2012. Web. 04 Mar 2021.

Vancouver:

da Silva R. Distribution and geochronology of unconformity-bound sequences in paleoproterozoic Elim-Olifantshoek red beds: implications for timing of formation of Sishen-type iron ore and heavy carbonate carbonisotope excursion. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10210/6103.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

da Silva R. Distribution and geochronology of unconformity-bound sequences in paleoproterozoic Elim-Olifantshoek red beds: implications for timing of formation of Sishen-type iron ore and heavy carbonate carbonisotope excursion. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/6103

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

11. Ho, Don N. Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications.

Degree: PhD, Chemistry, 2013, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:320491/

► Theranostics is the ability to diagnose with greater detail to disease properties and tailor specialized therapeutic regiments to a patient's unique case. Advancements in nanoparticle… (more)

▼ Theranostics is the ability to diagnose with greater detail to disease properties and tailor specialized therapeutic regiments to a patient's unique case. Advancements in nanoparticle synthesis for controlled material properties and further functionalization make the nano-scale materials promising candidates as a theranostic platform for predictive medicine, early detection, targeted therapy, and diagnostic monitoring. Here we examine iron oxide, gold-silver alloy, and gold-iron oxide dumbbell-like heterostructure nanoparticles for their combined diagnostic and therapeutic application. Iron oxide nanoparticles are used clinically as MRI contrast agents and also provide a platform for functionalization and further application of their magnetic properties. We examine the targeting of iron oxide to tumor vasculature using the tumstatin peptide in a three-dimensional in vitro tumor model and observe the therapeutic heating abilities in an alternating magnetic field. Surface enhanced fluorescence from nano-sized metal materials occurs through near-field coupling of the local electromagnetic field. We focus on controlling the surface plasmon resonance of AuAg alloy nanoparticles (AuAgNP) with a tunable method for transferring energy with fluorescent proteins. We examine the synthesis, surface modification, and localization of AuAgNPs to protein targets. We use fluorescein isothiocyanate as a model fluorophore to measure optimal energy transfer conditions. We examine green fluorescent protein as a target protein fluorophore for the protein model. Determination of alloy content, distance control, and targeting abilities for enhanced fluorescence can optimize current fluorescence imaging techniques and quantitative assays with greater sensitivity. Advanced hetero-structure nanoparticles offer added material properties and chemical functionalization over single component nanoparticles. We examine the controlled diagnostic and therapeutic capabilities of the dumbbell-like hetero-structure of gold-iron oxide nanoparticles for targeted in vivo pancreatic cancer MRI enhancement. Advisors/Committee Members: Sun, Shouheng (Director), Kim, Eunsuk (Reader), Webster, Thomas (Reader).

Subjects/Keywords: iron oxide

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APA (6^th Edition):

Ho, D. N. (2013). Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:320491/

Chicago Manual of Style (16^th Edition):

Ho, Don N. “Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications.” 2013. Doctoral Dissertation, Brown University. Accessed March 04, 2021. https://repository.library.brown.edu/studio/item/bdr:320491/.

MLA Handbook (7^th Edition):

Ho, Don N. “Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications.” 2013. Web. 04 Mar 2021.

Vancouver:

Ho DN. Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications. [Internet] [Doctoral dissertation]. Brown University; 2013. [cited 2021 Mar 04]. Available from: https://repository.library.brown.edu/studio/item/bdr:320491/.

Council of Science Editors:

Ho DN. Iron Oxide, Gold-Silver Alloy, and Heterostructure Nanoparticles for Magnetic and Optical Theranostic Applications. [Doctoral Dissertation]. Brown University; 2013. Available from: https://repository.library.brown.edu/studio/item/bdr:320491/

University of Gothenburg / Göteborgs Universitet

12. Weinfeld, Aleksander, 1920-. Storage iron in man.

Degree: 1964, University of Gothenburg / Göteborgs Universitet

URL: http://hdl.handle.net/2077/14832

Subjects/Keywords: Iron

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APA (6^th Edition):

Weinfeld, Aleksander, 1. (1964). Storage iron in man. (Thesis). University of Gothenburg / Göteborgs Universitet. Retrieved from http://hdl.handle.net/2077/14832

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Weinfeld, Aleksander, 1920-. “Storage iron in man.” 1964. Thesis, University of Gothenburg / Göteborgs Universitet. Accessed March 04, 2021. http://hdl.handle.net/2077/14832.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Weinfeld, Aleksander, 1920-. “Storage iron in man.” 1964. Web. 04 Mar 2021.

Vancouver:

Weinfeld, Aleksander 1. Storage iron in man. [Internet] [Thesis]. University of Gothenburg / Göteborgs Universitet; 1964. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/2077/14832.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Weinfeld, Aleksander 1. Storage iron in man. [Thesis]. University of Gothenburg / Göteborgs Universitet; 1964. Available from: http://hdl.handle.net/2077/14832

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Michigan State University

13. Chaudhari, Ramkrishna D. Influence of ladle additions of calcium, strontium and barium on the microstructure and properties of high strength hypoeutectic gray cast iron.

Degree: PhD, Department of Metallurgy, Mechanics and Material Science, 1964, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:34220

Subjects/Keywords: Iron

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APA (6^th Edition):

Chaudhari, R. D. (1964). Influence of ladle additions of calcium, strontium and barium on the microstructure and properties of high strength hypoeutectic gray cast iron. (Doctoral Dissertation). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:34220

Chicago Manual of Style (16^th Edition):

Chaudhari, Ramkrishna D. “Influence of ladle additions of calcium, strontium and barium on the microstructure and properties of high strength hypoeutectic gray cast iron.” 1964. Doctoral Dissertation, Michigan State University. Accessed March 04, 2021. http://etd.lib.msu.edu/islandora/object/etd:34220.

MLA Handbook (7^th Edition):

Chaudhari, Ramkrishna D. “Influence of ladle additions of calcium, strontium and barium on the microstructure and properties of high strength hypoeutectic gray cast iron.” 1964. Web. 04 Mar 2021.

Vancouver:

Chaudhari RD. Influence of ladle additions of calcium, strontium and barium on the microstructure and properties of high strength hypoeutectic gray cast iron. [Internet] [Doctoral dissertation]. Michigan State University; 1964. [cited 2021 Mar 04]. Available from: http://etd.lib.msu.edu/islandora/object/etd:34220.

Council of Science Editors:

Chaudhari RD. Influence of ladle additions of calcium, strontium and barium on the microstructure and properties of high strength hypoeutectic gray cast iron. [Doctoral Dissertation]. Michigan State University; 1964. Available from: http://etd.lib.msu.edu/islandora/object/etd:34220

14. Zhu, Ying, 1988-. Kinetics and mechanisms of the precipitation of layered Fe(II)-hydroxides during Fe(II) sorption onto common soil minerals.

Degree: PhD, Environmental Science, 2017, Rutgers University

URL: https://rucore.libraries.rutgers.edu/rutgers-lib/54170/

► This dissertation studies the formation kinetics and thermodynamics of secondary Fe(II) precipitates during aqueous Fe(II) sorption onto Al and/or Si containing minerals under various lab-based… (more)

▼ This dissertation studies the formation kinetics and thermodynamics of secondary Fe(II) precipitates during aqueous Fe(II) sorption onto Al and/or Si containing minerals under various lab-based anoxic model systems. In Chapter 2, sorption of Fe(II) in anoxic aqueous suspensions of γ-Al2O3, smectitic clay and amorphous silica was studied under various pH values. In Chapter 3 and 4, the impacts of As and organic compounds on Fe(II) sorption kinetics and mechanisms onto γ-Al2O3 and/or clay were investigated at pH 7.5. Uv-Vis spectroscopy and ICP-OES were employed to determine the aqueous concentrations of Fe, As and Si in the supernatants sampled during the macroscopic batch experiments, while the XAS was applied to characterize the solid-phase Fe and As sorption products. The Fe(II)-Al(III)-LDH formed at pH ≥ 7.0 during Fe(II) sorption onto γ-Al2O3, and at pH 7.0 and 7.5 during Fe(II) sorption onto clay. The poorly crystalline trioctahedral Fe(II)-phyllosilicates formed at pH ≥ 7.5 during Fe(II) sorption onto amorphous silica, and at pH 8.0 during Fe(II) sorption onto clay. Greater sorption rate and extent were observed with increasing pH. Significantly slower Fe(II) sorption kinetics in clay systems compared to γ-Al2O3 and SiO2 is due to the relatively low dissolution of substrate-derived Al and Si. While As(III) did not interfere with the Fe(II)-Al(III)-LDH formation and Fe(II) sorption kinetics onto γ-Al2O3 at pH 7.5, the presence of As(V) slowed down the Fe(II)-Al(III)-LDH formation at low As(V) concentrations, and fully shut it down at high As(V) concentrations, leading to the formation of Fe(II) surface complexes instead. The inhibitive effects of As(V) is attributed to the interference of adsorbed As(V) with the Al needed for Fe(II)-Al(III)-LDH formation. On the other hand, the presence of Fe(II) did not affect the sorption kinetics and mechanisms of As(III) onto γ-Al2O3, however enhanced As(V) sorption rate and extent and did not change the As(V) adsorption mode onto γ-Al2O3. The presence of humic substances (HS) generally hindered the formation of Fe(II)-Al(III)-LDH during Fe(II) sorption onto γ-Al2O3 and clay substrates at pH 7.5. In Fe(II) reacted γ-Al2O3 systems, HS slowed down the formation kinetics of Fe(II)-Al(III)-LDH precipitate. Larger inhibitive impacts of HS were observed when it cosorbed with Fe(II) onto γ-Al2O3 than when it pre-coated onto γ-Al2O3 before Fe(II) sorption. In Fe(II) reacted clay systems, humic acid (HA) coating on clay primarily altered the main Fe(II) sorption product from Fe(II)-Al(III)-LDH into poorly crystalline Fe(II)-phyllosilicate. The effects of HS on Fe(II) sorption onto mineral sorbents were associated with Al dissolution capability from mineral substrates, HS formation of organo-Al complexes and HS masking on mineral surfaces limiting the Al and/or Si needed to form secondary Fe(II) precipitates. The results from this work suggest substantial complexity in the composition and structure of Fe(II) sorption products, and the occurrence of which may represent… Advisors/Committee Members: Zhu, Ying, 1988- (author), Elzinga, Evert (chair), Rouff, Ashaki (internal member), Yee, Nathan (internal member), Axe, Lisa (outside member).

Subjects/Keywords: Geochemistry; Iron

10 more images…

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APA (6^th Edition):

Zhu, Ying, 1. (2017). Kinetics and mechanisms of the precipitation of layered Fe(II)-hydroxides during Fe(II) sorption onto common soil minerals. (Doctoral Dissertation). Rutgers University. Retrieved from https://rucore.libraries.rutgers.edu/rutgers-lib/54170/

Chicago Manual of Style (16^th Edition):

Zhu, Ying, 1988-. “Kinetics and mechanisms of the precipitation of layered Fe(II)-hydroxides during Fe(II) sorption onto common soil minerals.” 2017. Doctoral Dissertation, Rutgers University. Accessed March 04, 2021. https://rucore.libraries.rutgers.edu/rutgers-lib/54170/.

MLA Handbook (7^th Edition):

Zhu, Ying, 1988-. “Kinetics and mechanisms of the precipitation of layered Fe(II)-hydroxides during Fe(II) sorption onto common soil minerals.” 2017. Web. 04 Mar 2021.

Vancouver:

Zhu, Ying 1. Kinetics and mechanisms of the precipitation of layered Fe(II)-hydroxides during Fe(II) sorption onto common soil minerals. [Internet] [Doctoral dissertation]. Rutgers University; 2017. [cited 2021 Mar 04]. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/54170/.

Council of Science Editors:

Zhu, Ying 1. Kinetics and mechanisms of the precipitation of layered Fe(II)-hydroxides during Fe(II) sorption onto common soil minerals. [Doctoral Dissertation]. Rutgers University; 2017. Available from: https://rucore.libraries.rutgers.edu/rutgers-lib/54170/

University of Oxford

15. Palermo, Joanna. The impact of iron technology on the economy of the Aegean and Cyprus from 1200-850 BCE.

Degree: PhD, 2018, University of Oxford

URL: http://ora.ox.ac.uk/objects/uuid:449372f1-6dc9-48e2-9335-16107575094a ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.791605

► The thesis investigates the development of ironworking industries in the Aegean and Cyprus during the Early Iron Age, covering the crucial years from the twelfth… (more)

▼ The thesis investigates the development of ironworking industries in the Aegean and Cyprus during the Early Iron Age, covering the crucial years from the twelfth to the ninth centuries BCE. It advocates for a move away from pan-Mediterranean models that rely on a centre of 'innovation' from which the technology radiated to new regions via itinerant craftsmen. It argues instead for the development of models based on region-specific cultural and economic factors that influenced iron production and use. This comparative method reveals that the iron industries of the Aegean and Cyprus developed along separate trajectories. This thesis shows that iron objects were locally produced in the Mycenaean sphere during the Late Bronze Age. The Aegean did not depend on itinerant craftsmen from Cyprus to stimulate ironworking, but it was instead a local tradition that continued through the end of the palatial period in the Peloponnese. Iron spread throughout the Aegean in the ensuing century, with each region adapting objects to iron according to how it was valued. In the Peloponnese, iron was suitable for practical implements immediately, while Attica, Crete, Euboea, and the islands emphasised a high value ornamental purpose in mortuary display. By the 10th century, the standardisation of burial rituals during the Protogeometric integrated iron into general use across the Aegean. It became a widely produced, moderately valued metal for daily use implements like tools, as well as a regular part of mortuary display. In Cyprus, ironworking sprang up rapidly across the island, and without a Bronze Age tradition. It began as part of a package that included the arrival of Urnfield-type goods from the Aegean, iron being the more appropriate than bronze for items such as knives, daggers, fibulae, obeloi. Iron was applied in two spheres immediately, to tools of practical use and to high value mortuary display items. Local production due to the lack of ore sources in favour for a copper-smelting by-product method remains debatable, but Cypriot smiths were capable of mass-producing a series of knives. The iron industry did not disrupt but developed alongside the Early Iron Age investments made in the copper industry.

Subjects/Keywords: Anatolia iron; ironworking; iron working; ancient metallurgy; Cypriot iron; Early Iron Age; Greek iron

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APA (6^th Edition):

Palermo, J. (2018). The impact of iron technology on the economy of the Aegean and Cyprus from 1200-850 BCE. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:449372f1-6dc9-48e2-9335-16107575094a ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.791605

Chicago Manual of Style (16^th Edition):

Palermo, Joanna. “The impact of iron technology on the economy of the Aegean and Cyprus from 1200-850 BCE.” 2018. Doctoral Dissertation, University of Oxford. Accessed March 04, 2021. http://ora.ox.ac.uk/objects/uuid:449372f1-6dc9-48e2-9335-16107575094a ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.791605.

MLA Handbook (7^th Edition):

Palermo, Joanna. “The impact of iron technology on the economy of the Aegean and Cyprus from 1200-850 BCE.” 2018. Web. 04 Mar 2021.

Vancouver:

Palermo J. The impact of iron technology on the economy of the Aegean and Cyprus from 1200-850 BCE. [Internet] [Doctoral dissertation]. University of Oxford; 2018. [cited 2021 Mar 04]. Available from: http://ora.ox.ac.uk/objects/uuid:449372f1-6dc9-48e2-9335-16107575094a ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.791605.

Council of Science Editors:

Palermo J. The impact of iron technology on the economy of the Aegean and Cyprus from 1200-850 BCE. [Doctoral Dissertation]. University of Oxford; 2018. Available from: http://ora.ox.ac.uk/objects/uuid:449372f1-6dc9-48e2-9335-16107575094a ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.791605

University of Guelph

16. Charles, Christopher Vaughn. Happy Fish: A Novel Iron Supplementation Technique to Prevent Iron Deficiency Anemia in Women in Rural Cambodia.

Degree: PhD, Biomedical Sciences, 2012, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3638

► Maternal and child undernutrition are a significant problem in the developing world, with serious consequences for human health and socio-economic development. In Cambodia, 55% of… (more)

▼ Maternal and child undernutrition are a significant problem in the developing world, with serious consequences for human health and socio-economic development. In Cambodia, 55% of children, 43% of women of reproductive age, and 50% of pregnant women are anemic. Current prevention and control practices rely on supplementation with iron pills or large-scale food fortification, neither of which are affordable or feasible in rural Cambodia. In the study areas, 97% of women did not meet their daily iron requirements. The current research focuses on the design and evaluation of an innovative iron supplementation technique. A culturally acceptable, inexpensive and lightweight iron ingot was designed to resemble a fish species considered lucky in Khmer culture. The ingot, referred to as ‘try sabay’ or ‘happy fish’, was designed to supply iron at a slow, steady rate. Iron leaching was observed in water and soup samples prepared with the iron fish when used concurrently with an acidifier. More than 75% of daily iron requirements can be met with regular use. Its use in the common pot of soup or boiled water provides supplementation to the entire family. The effectiveness of the iron fish was investigated in a randomized community trial involving 310 women in rural Cambodia. Blood samples were taken at baseline and every three months thereafter, over a 12-month trial period. Significant increases in hemoglobin concentrations were observed in women allocated an iron fish when compared to controls throughout the study, with an endline difference of 11.6 g/L. Significant improvements in serum ferritin concentration were observed at 9 months (6.9 ng/mL) and endline (30.8 ng/mL) in women who used an iron fish regularly when compared to the control group. Overall, use of the iron fish led to a two-fold reduction in the prevalence of anemia. The supplement was used daily by 94% of the households at the end of the trial. The study highlights the acceptability and effectiveness of a fish-shaped iron ingot as a means of improving dietary iron content. It offers a promising, simple solution to iron deficiency anemia if the project can be scaled-up for use throughout the country. Advisors/Committee Members: Summerlee, Alastair, Dewey, Cate.

Subjects/Keywords: Anemia; Cambodia; Iron deficiency; Iron fish; Supplementation

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APA (6^th Edition):

Charles, C. V. (2012). Happy Fish: A Novel Iron Supplementation Technique to Prevent Iron Deficiency Anemia in Women in Rural Cambodia. (Doctoral Dissertation). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3638

Chicago Manual of Style (16^th Edition):

Charles, Christopher Vaughn. “Happy Fish: A Novel Iron Supplementation Technique to Prevent Iron Deficiency Anemia in Women in Rural Cambodia.” 2012. Doctoral Dissertation, University of Guelph. Accessed March 04, 2021. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3638.

MLA Handbook (7^th Edition):

Charles, Christopher Vaughn. “Happy Fish: A Novel Iron Supplementation Technique to Prevent Iron Deficiency Anemia in Women in Rural Cambodia.” 2012. Web. 04 Mar 2021.

Vancouver:

Charles CV. Happy Fish: A Novel Iron Supplementation Technique to Prevent Iron Deficiency Anemia in Women in Rural Cambodia. [Internet] [Doctoral dissertation]. University of Guelph; 2012. [cited 2021 Mar 04]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3638.

Council of Science Editors:

Charles CV. Happy Fish: A Novel Iron Supplementation Technique to Prevent Iron Deficiency Anemia in Women in Rural Cambodia. [Doctoral Dissertation]. University of Guelph; 2012. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/3638

University of Waterloo

17. Baldwin, Janis Rachel. Evaluation of the Removal of Perfluoroalkyl Substances from Aqueous Matrices in the Presence of Zerovalent Iron.

Degree: 2018, University of Waterloo

URL: http://hdl.handle.net/10012/12875

► Per- and polyfluoroalkyl substances (PFASs) are a class of persistent organic pollutants present in the environment that pose a threat to human health. PFASs primarily… (more)

▼ Per- and polyfluoroalkyl substances (PFASs) are a class of persistent organic pollutants present in the environment that pose a threat to human health. PFASs primarily reside within aqueous phases and are present in groundwater environments. Perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) are the most predominant PFASs. Remediation techniques focus on oxidation and sorption methods, both of which lack efficacy for all PFASs. There are few studies on reduction treatments such as zerovalent iron (ZVI), which demonstrate potential for both PFOS and PFOA removal and can be applied in subsurface environments. This thesis describes laboratory batch experiments that evaluate PFOS and PFOA removal in the presence of ZVI under a range of physical and geochemical conditions. Mechanisms of removal are explored utilizing PFAS mass balances based on a series of analyses that include aqueous phase fluoride and PFAS short chains, and PFAS extractions from the iron surface. Solid iron phase characterization provides supporting information regarding PFAS interaction with the iron surface. Laboratory batch experiments with PFOS in the presence of granular ZVI were conducted under combinations of initial pH (pH 2.0 and 6.6), temperature (~22°C and 60°C) and ZVI dosage (179 and 1792 mM). PFOS removal was enhanced under low initial pH likely due to a greater abundance of iron oxides compared to higher pH conditions. Higher temperatures also enhanced PFOS removal. PFOS removal by sorption generally increased under low pH and high ZVI dosed conditions, suggesting the abundance of iron oxides and surface area may play an important role. Laboratory batch experiments of PFOS and PFOA in the presence of zerovalent iron nanoparticles (nZVI) were conducted under combinations of initial pH (pH 2.0 and 8.3) and coating (uncoated and palladium-coated). The iron phase likely changed over time, as there was some release of PFOS and PFOA into aqueous solution compared to earlier sampling times. The presence of a palladium coating appeared to minimize the effects of iron corrosion, as PFOS and PFOA were released to a lesser degree at later time points compared to uncoated nZVI. PFOS and PFOA removal is likely dominated by electrostatic interaction, however functional group interaction with the iron surface may also play an important role.

Subjects/Keywords: groundwater; zerovalent iron; perfluoroalkyl acids; iron oxides

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APA (6^th Edition):

Baldwin, J. R. (2018). Evaluation of the Removal of Perfluoroalkyl Substances from Aqueous Matrices in the Presence of Zerovalent Iron. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/12875

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Baldwin, Janis Rachel. “Evaluation of the Removal of Perfluoroalkyl Substances from Aqueous Matrices in the Presence of Zerovalent Iron.” 2018. Thesis, University of Waterloo. Accessed March 04, 2021. http://hdl.handle.net/10012/12875.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Baldwin, Janis Rachel. “Evaluation of the Removal of Perfluoroalkyl Substances from Aqueous Matrices in the Presence of Zerovalent Iron.” 2018. Web. 04 Mar 2021.

Vancouver:

Baldwin JR. Evaluation of the Removal of Perfluoroalkyl Substances from Aqueous Matrices in the Presence of Zerovalent Iron. [Internet] [Thesis]. University of Waterloo; 2018. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10012/12875.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Baldwin JR. Evaluation of the Removal of Perfluoroalkyl Substances from Aqueous Matrices in the Presence of Zerovalent Iron. [Thesis]. University of Waterloo; 2018. Available from: http://hdl.handle.net/10012/12875

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Wollongong

18. Ta, Thi Dinh. Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces.

Degree: PhD, 2016, University of Wollongong

URL: 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912

► A classical molecular dynamics (MD) simulation has been used to investigate the adsorption and tribological performance of hydrocarbon lubricant between different iron and iron… (more)

▼ A classical molecular dynamics (MD) simulation has been used to investigate the adsorption and tribological performance of hydrocarbon lubricant between different iron and iron oxide surfaces. A realistic all-atom model of alkane was employed using the COMPASS force field (FF) while the relaxed surfaces and an effective force field for interactions between surface and lubricant were obtained from ab-initio calculations. A comparative analysis of adsorption of six n-alkanes (C_nH_2n+2, n = 4, 6, 8, 10, 12, 16) on Fe(110), FeO(110), and Fe₂O₃(0001) and thin film lubrication of hexadecane between Fe(100), Fe(110), Fe(111), FeO(100), FeO(110), FeO(111), Fe₂O₃(001), and Fe₂O₃(012) surfaces has been carried out. A quantitative surface parameterization was introduced to investigate the influence of surface properties such as crystalline structure, surface corrugation, and crystal plane on the structure, rheological properties, and tribological performance of the n-alkanes. The effects of working conditions such as loading pressure, shear rate, and temperature are also considered. The results show that alkane molecules orient randomly on Fe(110) and Fe₂O₃(0001) surfaces but they preferentially orient in (010) direction on FeO(110) at low temperature. Additionally, alkanes adsorb physically on iron oxides, in the following decreasing order Fe(110) > FeO(110) > Fe₂O₃(0001). The adsorption energies per saturated carbon site decrease with an increase of molecular chain length and this propensity is similar for different surfaces. In contrast, the saturated carbon density is insensitive to the surface potentials and shows an increasing trend for short alkane chains but it remains steady for longer chains. Although the wallfluid attraction of hexadecane on pure iron surfaces is significantly stronger than its oxides, there is a considerable reduction of shear stress of confined n-hexadecane film between Fe(100), and Fe(110) surfaces compared with FeO(110), FeO(111), Fe₂O₃(001), and Fe₂O₃(012). It was found that, in thin film lubrication of hexadecane between smooth iron and iron oxide surfaces, the atomic roughness plays a role more important than the wall-fluid adhesion strength.

Subjects/Keywords: molecular dynamics; adsorption; alkane; iron; iron oxide

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APA (6^th Edition):

Ta, T. D. (2016). Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces. (Doctoral Dissertation). University of Wollongong. Retrieved from 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912

Chicago Manual of Style (16^th Edition):

Ta, Thi Dinh. “Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces.” 2016. Doctoral Dissertation, University of Wollongong. Accessed March 04, 2021. 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912.

MLA Handbook (7^th Edition):

Ta, Thi Dinh. “Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces.” 2016. Web. 04 Mar 2021.

Vancouver:

Ta TD. Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces. [Internet] [Doctoral dissertation]. University of Wollongong; 2016. [cited 2021 Mar 04]. Available from: 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912.

Council of Science Editors:

Ta TD. Molecular dynamics simulation of adsorption and lubrication of hydrocarbons and aqueous copolymer lubricants on iron and iron oxide surfaces. [Doctoral Dissertation]. University of Wollongong; 2016. Available from: 0299 OTHER PHYSICAL SCIENCES, 0399 OTHER CHEMICAL SCIENCES, 0999 OTHER ENGINEERING ; https://ro.uow.edu.au/theses/4912

University of Ottawa

19. Gonzalez Lucena, Fedora. Mineral Magnetism of Environmental Reference Materials: Iron Oxyhydroxide Nanoparticles .

Degree: 2010, University of Ottawa

URL: http://hdl.handle.net/10393/19608

► Iron oxyhydroxides are ubiquitous in surface environments, playing a key role in many biogeochemical processes. Their characterization is made challenging by their nanophase nature. Magnetometry… (more)

▼ Iron oxyhydroxides are ubiquitous in surface environments, playing a key role in many biogeochemical processes. Their characterization is made challenging by their nanophase nature. Magnetometry serves as a sensitive non-destructive characterization technique that can elucidate intrinsic physical properties, taking advantage of the superparamagnetic behaviour that nanoparticles may exhibit. In this work, synthetic analogues of common iron oxyhydroxide minerals (ferrihydrite, goethite, lepidocrocite, schwertmannite and akaganéite) are characterized using DC and AC magnetometry (cryogenic, room temperature), along with complementary analyses from Mössbauer spectroscopy (cryogenic, room temperature), powder X-ray diffraction and scanning electron microscopy. It was found that all of the iron oxyhydroxide mineral nanoparticles, including lepidocrocite, schwertmannite and akaganéite were superparamagnetic and therefore magnetically ordered at room temperature. Previous estimates of Néel temperatures for these three minerals are relatively low and are understood as misinterpreted magnetic blocking temperatures. This has important implications in environmental geoscience due to this mineral group’s potential as magnetic remanence carriers. Analysis of the data enabled the extraction of the intrinsic physical parameters of the nanoparticles, including magnetic sizes. The study also showed the possible effect on these parameters of crystal-chemical variations, due to elemental structural incorporation, providing a nanoscale mineralogical characterization of these iron oxyhydroxides. The analysis of the intrinsic parameters showed that all of the iron oxyhydroxide mineral nanoparticles considered here have a common magnetic moment formation mechanism associated with a random spatial distribution of iv uncompensated magnetic spins, and with different degrees of structural disorder and compositional stoichiometry variability, which give rise to relatively large intrinsic magnetization values. The elucidation of the magnetic nanostructure also contributes to the study of the surface region of the nanoparticles, which affects the particles’ reactivity in the environment.

Subjects/Keywords: mineral magnetism; nanoparticles; iron oxides; iron oxyhydroxides

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APA (6^th Edition):

Gonzalez Lucena, F. (2010). Mineral Magnetism of Environmental Reference Materials: Iron Oxyhydroxide Nanoparticles . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/19608

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gonzalez Lucena, Fedora. “Mineral Magnetism of Environmental Reference Materials: Iron Oxyhydroxide Nanoparticles .” 2010. Thesis, University of Ottawa. Accessed March 04, 2021. http://hdl.handle.net/10393/19608.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gonzalez Lucena, Fedora. “Mineral Magnetism of Environmental Reference Materials: Iron Oxyhydroxide Nanoparticles .” 2010. Web. 04 Mar 2021.

Vancouver:

Gonzalez Lucena F. Mineral Magnetism of Environmental Reference Materials: Iron Oxyhydroxide Nanoparticles . [Internet] [Thesis]. University of Ottawa; 2010. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10393/19608.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gonzalez Lucena F. Mineral Magnetism of Environmental Reference Materials: Iron Oxyhydroxide Nanoparticles . [Thesis]. University of Ottawa; 2010. Available from: http://hdl.handle.net/10393/19608

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Minnesota

20. Bigelow, Jennifer. Characterization and Reactivity of Synthetic Nonheme Oxoiron(IV) Complexes.

Degree: PhD, Chemistry, 2015, University of Minnesota

URL: http://hdl.handle.net/11299/188871

► Nonheme iron enzymes are prevalent throughout nature and utilize oxygen as the oxidant. While some intermediates are proposed, such as iron(IV)-oxo and iron(III)-peroxo species, the… (more)

▼ Nonheme iron enzymes are prevalent throughout nature and utilize oxygen as the oxidant. While some intermediates are proposed, such as iron(IV)-oxo and iron(III)-peroxo species, the nature of the reactivity of these species has not yet been fully explored. Nonheme synthetic iron model complexes allow for easy modification to probe the reactivity of such species, and allow for characterization for later comparison with enzymes. This dissertation explores the reactivity of iron(IV)-oxo species supported by a tetramethycyclam framework. Interesting, in contrast to what had been reported previously, the electron-donating properties of the axial ligand do not correspond to the hydrogen atom transfer (HAT) reactivity, while a consistent trend for oxygen atom transfer (OAT) is observed. Ligand tethering is found to have a large impact on the enthalpy of activation. It is proposed that the iron(IV)-oxo moiety rises out of the plane to react, which forces tethered ligands to weaken the axial bond. The activation of oxygen by synthetic iron complexes, in the presence of either a hydrogen atom donor or an acid and a proton source, has been proposed to mimic enzymatic activity. However, the reexamination of mechanisms previously reported to follow an enzyme-mimicking pathway are instead due to peroxyl radicals. This highlights the importance of testing such mechanisms, as autooxidation is a common problem with many compounds in the presence of dioxygen. Finally, species such as iron(IV)-oxo and iron(III)-peroxo complexes, as well as related complexes, are characterized by resonance Raman spectroscopy. Many of these complexes have a ligand with a carboxylate moiety, as seen in nonheme enzymes. Characterization of these complexes show similarities between iron(IV)-oxo and iron(III)-peroxo and chromium(IV)-peroxo species reported previously, having similar vibration values, while major differences exist in vibrations between previously reported iodosylarene-iron(III) complexes and new iodosylarene-iron(III) complexes.

Subjects/Keywords: iron; iron(IV)-oxo; nonheme; oxoiron(IV)

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APA (6^th Edition):

Bigelow, J. (2015). Characterization and Reactivity of Synthetic Nonheme Oxoiron(IV) Complexes. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/188871

Chicago Manual of Style (16^th Edition):

Bigelow, Jennifer. “Characterization and Reactivity of Synthetic Nonheme Oxoiron(IV) Complexes.” 2015. Doctoral Dissertation, University of Minnesota. Accessed March 04, 2021. http://hdl.handle.net/11299/188871.

MLA Handbook (7^th Edition):

Bigelow, Jennifer. “Characterization and Reactivity of Synthetic Nonheme Oxoiron(IV) Complexes.” 2015. Web. 04 Mar 2021.

Vancouver:

Bigelow J. Characterization and Reactivity of Synthetic Nonheme Oxoiron(IV) Complexes. [Internet] [Doctoral dissertation]. University of Minnesota; 2015. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11299/188871.

Council of Science Editors:

Bigelow J. Characterization and Reactivity of Synthetic Nonheme Oxoiron(IV) Complexes. [Doctoral Dissertation]. University of Minnesota; 2015. Available from: http://hdl.handle.net/11299/188871

University of Minnesota

21. Daire, Jacob. Evolving reactivity and products of natural iron-bearing minerals toward sulfide.

Degree: MS, Civil Engineering, 2019, University of Minnesota

URL: http://hdl.handle.net/11299/211725

► Iron minerals play dynamic roles in the sulfur cycle in natural environments and engineered systems. Although pure or synthesized iron minerals are widely studied for… (more)

▼ Iron minerals play dynamic roles in the sulfur cycle in natural environments and engineered systems. Although pure or synthesized iron minerals are widely studied for their importance in the sulfur cycle, heterogeneous iron-bearing materials are important since they are found naturally and may be economically feasible for engineered sulfur treatment. In this study, reaction capacities, products, and kinetics of two natural iron-bearing minerals derived from taconite towards aqueous sulfide were studied using batch and column reactors. Siderite (SR)- and iron oxide (IO)-rich natural minerals were selected based on distinction in iron mineralogical characteristics and quantity. The siderite rich SR reacted with more sulfide per gram (FeR), over the iron oxide rich IO. SR produced more solid phase sulfur, liberated by 9 N HCl (AVS) and chromic acid, where IO produced more elemental sulfur and thiosulfate. Sulfate as an oxidation product was minimal for both materials in batch and column reactors. Reaction kinetics were dependent upon the molar ratio FeR/HSinitial. Generally, initial reaction rate increased with increasing FeR/HSinitial, or as iron becomes the dominant reactant. SR maintained an appreciable reaction rate with each sequential spike and differing particle sizes, reaction rate constant (k) falling only slightly below the expected relationship. IO exhibited a high initial reaction rate, but its reaction rate constant decreased substantially with sequential sulfide spikes and varied greatly with larger particle sizes. In continuous flow column reactors, both materials FeR and AVS increased over batch reactor values. A reactive-transport model was developed using batch reactor kinetic results to establish reaction rate, k, dependence on FeR/HSinitial, and was used to describe sulfide evolution through a column. In summary, the selected materials generally reacted predictably with sulfide with respect to their iron mineralogy and experienced predictable sulfur reaction kinetics and capacities across different loading scenarios. These results represent an important step toward elucidating the reactivity of heterogeneous iron-bearing materials at the interfacial processes with the cycles of Fe and S and sulfur treatment systems.

Subjects/Keywords: evolving; iron minerals; iron sulfide; natural; sulfate

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APA (6^th Edition):

Daire, J. (2019). Evolving reactivity and products of natural iron-bearing minerals toward sulfide. (Masters Thesis). University of Minnesota. Retrieved from http://hdl.handle.net/11299/211725

Chicago Manual of Style (16^th Edition):

Daire, Jacob. “Evolving reactivity and products of natural iron-bearing minerals toward sulfide.” 2019. Masters Thesis, University of Minnesota. Accessed March 04, 2021. http://hdl.handle.net/11299/211725.

MLA Handbook (7^th Edition):

Daire, Jacob. “Evolving reactivity and products of natural iron-bearing minerals toward sulfide.” 2019. Web. 04 Mar 2021.

Vancouver:

Daire J. Evolving reactivity and products of natural iron-bearing minerals toward sulfide. [Internet] [Masters thesis]. University of Minnesota; 2019. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/11299/211725.

Council of Science Editors:

Daire J. Evolving reactivity and products of natural iron-bearing minerals toward sulfide. [Masters Thesis]. University of Minnesota; 2019. Available from: http://hdl.handle.net/11299/211725

University of Southern California

22. Ruccione, Kathleen S. Transfusional iron, anthracyclines and cardiac outcomes in childhood cancer survivors.

Degree: PhD, Preventive Medicine (Health Behavior), 2013, University of Southern California

URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/297327/rec/7585

► Background: Childhood cancer survivors receiving multiple packed red blood cell (PRBC) transfusions may be at increased risk for iron deposition in vital organs such as… (more)

▼ Background: Childhood cancer survivors receiving multiple packed red blood cell (PRBC) transfusions may be at increased risk for iron deposition in vital organs such as the heart, thereby increasing risk of serious late effects due to organ dysfunction with associated symptoms, which may diminish their health-related quality of life (HRQOL). ❧ Purpose: To determine the prevalence, distribution and severity of transfusional iron deposition in heart, liver and pancreas among a cohort of childhood cancer survivors, and to characterize the prevalence, distribution and severity of cardiac dysfunction and pathological remodeling among a cohort of childhood cancer survivors; to assess HRQOL using validated patient-reported outcome (PRO) measures in a cohort of childhood cancer survivors. ❧ Methods: Design: single institution cross-sectional study of childhood cancer survivor cohort. Organ tissue iron was quantified by magnetic resonance imaging (MRI). Iron status by serum markers and hemachromatosis gene mutation status were assessed, as were cardiac biomarkers. Study subjects participated in a structured interview during which they (and their parent/guardian, if available), completed the validated PRO measures of HRQOL and fatigue in English or Spanish; a brief Cardiac Health Form was also completed. In addition to data acquired from laboratory and MRI evaluations obtained for this study, disease/treatment and demographic information was abstracted from medical records. Data analysis included descriptive approaches for data summarization and regression modeling for estimation and testing. ❧ Results: Seventy-five patients were enrolled (median age 14 years, range 8-25.6 years at evaluation); slightly more than half were male (40/75) and most were Hispanic/Latino (45/75). Median follow up time was 4.2 years. Cancer diagnoses included ALL/AML (n=33) and solid tumors (n=42). Sixty-seven patients had received PRBC transfusions (median=11, range=1-47), with median cumulative PRBC transfusion volume (cPRBCv) of 2727 mL (range, 300-14224 mL), and median cPRBCv adjusted for body weight of 90.6 mL/kg (range, 3.6-391.9). Forty-eight (64%) study participants had received anthracycline chemotherapy as part of their treatment plan, with a median dose of 293mg/m² (range, 50-739mg/m²). Study 1: Based on liver R2* (n=73) and cardiac T2* (n=74), tissue iron concentration (mean, median, range in mg/g) was calculated for liver (2.6, 1.2, 0.9-23.7) and heart (0.7, 0.6, 0.5-0.9). No iron calibration exists for pancreas; pancreas R2* results (mean, median, range in Hz) were 30.2, 26, 18-128 (n=72). Liver iron concentration (LIC) was elevated in 36 (58.9%) patients and pancreas R2* was abnormal in 34 (47.2%) patients, respectively. No abnormal cardiac iron concentrations were observed. Statistically significant correlations between liver R2* and pancreatic R2* were found. Both hepatic and pancreatic R2* were significantly positively correlated with serum iron, iron binding capacity, serum ferritin, and cRBCv. HFE C282Y and H63D mutation status… Advisors/Committee Members: RIchardson, Jean (Committee Chair), Jordan-Marsh, Maryalice (Committee Member), Krailo, Mark (Committee Member), Rohrbach, Luanne (Committee Member), Siegel, Stuart E. (Committee Member), Wood, John C. (Committee Member).

Subjects/Keywords: childhood cancer survivors; iron overload; transfusional iron

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APA (6^th Edition):

Ruccione, K. S. (2013). Transfusional iron, anthracyclines and cardiac outcomes in childhood cancer survivors. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/297327/rec/7585

Chicago Manual of Style (16^th Edition):

Ruccione, Kathleen S. “Transfusional iron, anthracyclines and cardiac outcomes in childhood cancer survivors.” 2013. Doctoral Dissertation, University of Southern California. Accessed March 04, 2021. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/297327/rec/7585.

MLA Handbook (7^th Edition):

Ruccione, Kathleen S. “Transfusional iron, anthracyclines and cardiac outcomes in childhood cancer survivors.” 2013. Web. 04 Mar 2021.

Vancouver:

Ruccione KS. Transfusional iron, anthracyclines and cardiac outcomes in childhood cancer survivors. [Internet] [Doctoral dissertation]. University of Southern California; 2013. [cited 2021 Mar 04]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/297327/rec/7585.

Council of Science Editors:

Ruccione KS. Transfusional iron, anthracyclines and cardiac outcomes in childhood cancer survivors. [Doctoral Dissertation]. University of Southern California; 2013. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll3/id/297327/rec/7585

University of Waterloo

23. Zhang, Wei. Synthesis and Characterization of Iron-Amide and Iron-Imide-Sulfide Clusters.

Degree: 2011, University of Waterloo

URL: http://hdl.handle.net/10012/6189

► The iron-molybdenum cofactor (FeMo cofactor) is the catalytic center of nitrogen fixation in molybdenum-dependent nitrognease enzymes. The resting state cofactor is a complex [MoFe7S9X] cluster,… (more)

Subjects/Keywords: Iron-amide clusters; Iron-imide-sulfide clusters

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APA (6^th Edition):

Zhang, W. (2011). Synthesis and Characterization of Iron-Amide and Iron-Imide-Sulfide Clusters. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/6189

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zhang, Wei. “Synthesis and Characterization of Iron-Amide and Iron-Imide-Sulfide Clusters.” 2011. Thesis, University of Waterloo. Accessed March 04, 2021. http://hdl.handle.net/10012/6189.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zhang, Wei. “Synthesis and Characterization of Iron-Amide and Iron-Imide-Sulfide Clusters.” 2011. Web. 04 Mar 2021.

Vancouver:

Zhang W. Synthesis and Characterization of Iron-Amide and Iron-Imide-Sulfide Clusters. [Internet] [Thesis]. University of Waterloo; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10012/6189.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zhang W. Synthesis and Characterization of Iron-Amide and Iron-Imide-Sulfide Clusters. [Thesis]. University of Waterloo; 2011. Available from: http://hdl.handle.net/10012/6189

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cornell University

24. Young, Melissa. Iron Absortpion In Pregnant And Non-Pregnant Women And Mechanisms Of Placental Iron Transfer.

Degree: PhD, Nutrition, 2011, Cornell University

URL: http://hdl.handle.net/1813/33570

► Iron deficiency anemia is the most common nutrient deficiency in the world , with highest rates in pregnant women and young children. Despite the magnitude… (more)

Subjects/Keywords: Iron; Pregnancy; Hepcidin

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APA (6^th Edition):

Young, M. (2011). Iron Absortpion In Pregnant And Non-Pregnant Women And Mechanisms Of Placental Iron Transfer. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/33570

Chicago Manual of Style (16^th Edition):

Young, Melissa. “Iron Absortpion In Pregnant And Non-Pregnant Women And Mechanisms Of Placental Iron Transfer.” 2011. Doctoral Dissertation, Cornell University. Accessed March 04, 2021. http://hdl.handle.net/1813/33570.

MLA Handbook (7^th Edition):

Young, Melissa. “Iron Absortpion In Pregnant And Non-Pregnant Women And Mechanisms Of Placental Iron Transfer.” 2011. Web. 04 Mar 2021.

Vancouver:

Young M. Iron Absortpion In Pregnant And Non-Pregnant Women And Mechanisms Of Placental Iron Transfer. [Internet] [Doctoral dissertation]. Cornell University; 2011. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1813/33570.

Council of Science Editors:

Young M. Iron Absortpion In Pregnant And Non-Pregnant Women And Mechanisms Of Placental Iron Transfer. [Doctoral Dissertation]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/33570

University of KwaZulu-Natal

25. Mkhize, Princess Zinhle. Adherence to iron prophylactic therapy during pregnancy in an urban regional hospital in Durban, South Africa.

Degree: 2017, University of KwaZulu-Natal

URL: http://hdl.handle.net/10413/16034

► Iron and folic acid supplementation plays a major role in prevention and control of iron deficiency anaemia in antenatal care. In South Africa, although all… (more)

Subjects/Keywords: Iron prophylactic therapy.; Iron deficiency anaemia.; Adhere to prophylactic iron.; Anemia in antenatal.; Prophylectic iron.

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APA (6^th Edition):

Mkhize, P. Z. (2017). Adherence to iron prophylactic therapy during pregnancy in an urban regional hospital in Durban, South Africa. (Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/16034

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Mkhize, Princess Zinhle. “Adherence to iron prophylactic therapy during pregnancy in an urban regional hospital in Durban, South Africa.” 2017. Thesis, University of KwaZulu-Natal. Accessed March 04, 2021. http://hdl.handle.net/10413/16034.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Mkhize, Princess Zinhle. “Adherence to iron prophylactic therapy during pregnancy in an urban regional hospital in Durban, South Africa.” 2017. Web. 04 Mar 2021.

Vancouver:

Mkhize PZ. Adherence to iron prophylactic therapy during pregnancy in an urban regional hospital in Durban, South Africa. [Internet] [Thesis]. University of KwaZulu-Natal; 2017. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10413/16034.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Mkhize PZ. Adherence to iron prophylactic therapy during pregnancy in an urban regional hospital in Durban, South Africa. [Thesis]. University of KwaZulu-Natal; 2017. Available from: http://hdl.handle.net/10413/16034

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

26. Rady, Ayten Khaled Mohamed Abdelhalim. Formation Damage Due To Iron Precpitation In Limestone, Dolomite and Sandstone Cores.

Degree: MS, Petroleum Engineering, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/157118

► Formation damage due to iron precipitation continues to be a major problem in the oil field. Research has established that as the pH of injected… (more)

Subjects/Keywords: iron formation damage

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APA (6^th Edition):

Rady, A. K. M. A. (2016). Formation Damage Due To Iron Precpitation In Limestone, Dolomite and Sandstone Cores. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/157118

Chicago Manual of Style (16^th Edition):

Rady, Ayten Khaled Mohamed Abdelhalim. “Formation Damage Due To Iron Precpitation In Limestone, Dolomite and Sandstone Cores.” 2016. Masters Thesis, Texas A&M University. Accessed March 04, 2021. http://hdl.handle.net/1969.1/157118.

MLA Handbook (7^th Edition):

Rady, Ayten Khaled Mohamed Abdelhalim. “Formation Damage Due To Iron Precpitation In Limestone, Dolomite and Sandstone Cores.” 2016. Web. 04 Mar 2021.

Vancouver:

Rady AKMA. Formation Damage Due To Iron Precpitation In Limestone, Dolomite and Sandstone Cores. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1969.1/157118.

Council of Science Editors:

Rady AKMA. Formation Damage Due To Iron Precpitation In Limestone, Dolomite and Sandstone Cores. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/157118

Penn State University

27. Qian, Yufeng. Microbes Breathe Iron: Characterization of Dissimilatory Iron Reduction by Shewanella oneidensis MR-1.

Degree: 2011, Penn State University

URL: https://submit-etda.libraries.psu.edu/catalog/12448

► This dissertation concerns the biological process of dissimilatory iron reduction (DIR) by a model iron-reducing microorganism: Shewanella oneidensis MR-1. Biochemical studies were performed to probe… (more)

▼ This dissertation concerns the biological process of dissimilatory iron reduction (DIR) by a model iron-reducing microorganism: Shewanella oneidensis MR-1. Biochemical studies were performed to probe the iron binding site on a small tetraheme cytochrome and to elucidate the electron transfer network in the periplasm. An outer membrane (OM)-localized TonB-dependent receptor was identified as a putative iron transport protein involved in DIR. A periplasm-localized small tetraheme cytochrome (STC) was heterologously expressed and purified from Escherichia coli. Kinetic studies have been performed to probe the electron flow on STC. Chemical modifications followed by site-directed mutagenesis along with isothermal titration calorimetry (ITC) and stopped flow measurements were performed to identify the iron binding site on STC. Chemical modification of STC revealed that carboxyl groups are involved in iron binding. Scanning mutagenesis on Asp and Glu was carried out to probe the putative iron binding site on STC. Two STC mutants (D21N; D80N) showed approximately 70% decrease in observed electron transfer rate constant with EDTA-Fe3+ from transient-state kinetic measurements. The impaired reactivity of STC (D80N/D21N) with EDTA-Fe3+ was further confirmed by a significant decrease (>10 fold) in iron binding affinity. Metal-catalyzed protein oxidation was used to identify membrane proteins which bind iron, acting either as an iron transporter or as a terminal iron reductase. This oxidation system catalyzed the modification of amino acids in close proximity to the iron binding site. The carbonyl groups formed from this oxidation can then be labeled with fluoresceinamine (FLNH2). The peptide containing the FLNH2 can then be proteolytically digested, purified by HPLC and then identified by MALDI-TOF tandem MS. A predominant peptide was identified to be part of SO2907 that encodes a putative TonB dependent receptor. Compared to wild type (wt), the so2097 gene deletion (∆SO2907) mutant has impaired ability to reduce soluble Fe(III). In vitro iron binding assay demonstrated that a truncated form of heterologous-expressed SO2907 that contains the Fe(III) binding site, is capable of binding soluble Fe(III) forms with a Kd of approximate 50 μM. Biochemical studies were carried out to investigate the electron transfer network in the periplasm. In vitro protein-protein interactions were conducted between three important electron transfer components: cytoplamic-membrane-localized CymA, soluble periplamsic-localized STC and OM associated MtrA in S. oneidensis MR-1. The specific interaction was found between CymA and MtrA while no apparent interaction was observed between CymA and STC. Through the in vitro membrane-catalyzed (formate-dehydrogenase-dependent) MtrA reduction, the direct electron transfer was demonstrated between CymA with MtrA. A proposed electron transfer route in the periplasm is presented. Advisors/Committee Members: Ming Tien, Dissertation Advisor/Co-Advisor, Ming Tien, Committee Chair/Co-Chair, Carsten Krebs, Committee Member, Squire J Booker, Committee Member, James David Kubicki, Committee Member, B Tracy Nixon, Committee Member.

Subjects/Keywords: Shewanella; Iron reduction

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Qian, Y. (2011). Microbes Breathe Iron: Characterization of Dissimilatory Iron Reduction by Shewanella oneidensis MR-1. (Thesis). Penn State University. Retrieved from https://submit-etda.libraries.psu.edu/catalog/12448

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Qian, Yufeng. “Microbes Breathe Iron: Characterization of Dissimilatory Iron Reduction by Shewanella oneidensis MR-1.” 2011. Thesis, Penn State University. Accessed March 04, 2021. https://submit-etda.libraries.psu.edu/catalog/12448.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Qian, Yufeng. “Microbes Breathe Iron: Characterization of Dissimilatory Iron Reduction by Shewanella oneidensis MR-1.” 2011. Web. 04 Mar 2021.

Vancouver:

Qian Y. Microbes Breathe Iron: Characterization of Dissimilatory Iron Reduction by Shewanella oneidensis MR-1. [Internet] [Thesis]. Penn State University; 2011. [cited 2021 Mar 04]. Available from: https://submit-etda.libraries.psu.edu/catalog/12448.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Qian Y. Microbes Breathe Iron: Characterization of Dissimilatory Iron Reduction by Shewanella oneidensis MR-1. [Thesis]. Penn State University; 2011. Available from: https://submit-etda.libraries.psu.edu/catalog/12448

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

28. Tran, Camly Thien. Chemistry of Iron-Sulfur Clusters and Their Role in Crosstalk Between Nitric Oxide and Hydrogen Sulfide.

Degree: PhD, Chemistry, 2015, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:419356/

► Iron-sulfur [Fe-S] clusters are found at the active sites of various metalloenzymes and are one of the main targets of nitric oxide (NO). NO is… (more)

Subjects/Keywords: iron sulfur clusters

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APA (6^th Edition):

Tran, C. T. (2015). Chemistry of Iron-Sulfur Clusters and Their Role in Crosstalk Between Nitric Oxide and Hydrogen Sulfide. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:419356/

Chicago Manual of Style (16^th Edition):

Tran, Camly Thien. “Chemistry of Iron-Sulfur Clusters and Their Role in Crosstalk Between Nitric Oxide and Hydrogen Sulfide.” 2015. Doctoral Dissertation, Brown University. Accessed March 04, 2021. https://repository.library.brown.edu/studio/item/bdr:419356/.

MLA Handbook (7^th Edition):

Tran, Camly Thien. “Chemistry of Iron-Sulfur Clusters and Their Role in Crosstalk Between Nitric Oxide and Hydrogen Sulfide.” 2015. Web. 04 Mar 2021.

Vancouver:

Tran CT. Chemistry of Iron-Sulfur Clusters and Their Role in Crosstalk Between Nitric Oxide and Hydrogen Sulfide. [Internet] [Doctoral dissertation]. Brown University; 2015. [cited 2021 Mar 04]. Available from: https://repository.library.brown.edu/studio/item/bdr:419356/.

Council of Science Editors:

Tran CT. Chemistry of Iron-Sulfur Clusters and Their Role in Crosstalk Between Nitric Oxide and Hydrogen Sulfide. [Doctoral Dissertation]. Brown University; 2015. Available from: https://repository.library.brown.edu/studio/item/bdr:419356/

University of Johannesburg

29. Jones, Clive Laurence. The manufacture and wear of a cast iron matrix / WC-Co composite material.

Degree: 2014, University of Johannesburg

URL: http://hdl.handle.net/10210/9170

►

M.Tech (Metallurgy)

Abrasive wear is a major factor in the production costs of the mining industry in South Africa (as is the case in the… (more)

▼

M.Tech (Metallurgy)

Abrasive wear is a major factor in the production costs of the mining industry in South Africa (as is the case in the rest of the world). These costs arise from the need to replace consumables such as digger teeth, mill liners, screens and chutes. Some materials used in these areas have been used for years with little or no change to their properties such as Hadfields manganese steel; others have been significantly modified to improve their performance, as is the case with high chromium white cast iron. Some areas in the mining industry have made a complete chanlfe of material in order to reduce wear rates; the use of 9% Cr stainless steel ( ) is an example of this. In some applications metals have been successfully replaced by ceramics for example the use of alumina in combination with cemented tungsten carbides ash conditioner blades (2) at ESKOM power stations. Significant improvements in profitability (in the form of reduced consumable costs and increased productivity) can be realised by the development of new abrasion resistant materials; hence many organisations are constantly involved in such work. The fundamental property required to resist abrasive wear is hardness, however a degree of toughness is always required depending on the application. Composite materials have the best possibility of combining these properties, for example high chrome white iron can be regarded as a composite material on a microscopic scale with very hard carbides supported by a tough martensitic matrix. This material performs extremely well in many highly erosive environments; it is also relatively cheap as the "composite microstructure" forms directlJ: from casting with a heat treatment process providing a hardened matrix 3). Another example of a composite material is cemented tungsten carbide; this is manufactured as a true composite, i.e. discrete particles of tungsten carbide are sintered with cobalt particles to form a relatively tough extremely hard material. This combines the hard brittle WC with the relatively soft tough cobalt binder acting as a matrix. This material has the best resistance to abrasive wear of all metallic materials. Ceramics have higher hardness but are significantly more brittle hence their application is limited to erosive rather than abrasive environments. Cemented tungsten carbide inserts are brazed or shrunk into steel holders and used as drill tips for rock drilling; this can be regarded as a composite product, using the strong and tough steel to hold the hard tungsten carbide inserts in place.

Subjects/Keywords: Cast-iron - Metallurgy

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Jones, C. L. (2014). The manufacture and wear of a cast iron matrix / WC-Co composite material. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/9170

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Jones, Clive Laurence. “The manufacture and wear of a cast iron matrix / WC-Co composite material.” 2014. Thesis, University of Johannesburg. Accessed March 04, 2021. http://hdl.handle.net/10210/9170.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Jones, Clive Laurence. “The manufacture and wear of a cast iron matrix / WC-Co composite material.” 2014. Web. 04 Mar 2021.

Vancouver:

Jones CL. The manufacture and wear of a cast iron matrix / WC-Co composite material. [Internet] [Thesis]. University of Johannesburg; 2014. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/10210/9170.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Jones CL. The manufacture and wear of a cast iron matrix / WC-Co composite material. [Thesis]. University of Johannesburg; 2014. Available from: http://hdl.handle.net/10210/9170

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

30. Fitzpatrick-Collins, Jessica. The Reactivity of Iron Nitrosyl Complexes and Insight Into the Repair of Nitric Oxide-Modified Iron-Sulfur Proteins.

Degree: PhD, Chemistry, 2015, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:419490/

► Nitric oxide (NO) serves a number of important functions in biological systems. Many of these functions involve interaction of this free radical with the inorganic… (more)

Subjects/Keywords: Iron-sulfur clusters

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Fitzpatrick-Collins, J. (2015). The Reactivity of Iron Nitrosyl Complexes and Insight Into the Repair of Nitric Oxide-Modified Iron-Sulfur Proteins. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:419490/

Chicago Manual of Style (16^th Edition):

Fitzpatrick-Collins, Jessica. “The Reactivity of Iron Nitrosyl Complexes and Insight Into the Repair of Nitric Oxide-Modified Iron-Sulfur Proteins.” 2015. Doctoral Dissertation, Brown University. Accessed March 04, 2021. https://repository.library.brown.edu/studio/item/bdr:419490/.

MLA Handbook (7^th Edition):

Fitzpatrick-Collins, Jessica. “The Reactivity of Iron Nitrosyl Complexes and Insight Into the Repair of Nitric Oxide-Modified Iron-Sulfur Proteins.” 2015. Web. 04 Mar 2021.

Vancouver:

Fitzpatrick-Collins J. The Reactivity of Iron Nitrosyl Complexes and Insight Into the Repair of Nitric Oxide-Modified Iron-Sulfur Proteins. [Internet] [Doctoral dissertation]. Brown University; 2015. [cited 2021 Mar 04]. Available from: https://repository.library.brown.edu/studio/item/bdr:419490/.

Council of Science Editors:

Fitzpatrick-Collins J. The Reactivity of Iron Nitrosyl Complexes and Insight Into the Repair of Nitric Oxide-Modified Iron-Sulfur Proteins. [Doctoral Dissertation]. Brown University; 2015. Available from: https://repository.library.brown.edu/studio/item/bdr:419490/

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