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Showing 1 to 20 of 1363 for “"Sulfur"”.
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Sulfur-Based Yolk-Shell Nanoparticles for Lithium Sulfur Batteries
… focuses on the synthesis of gold-functionalized sulfur yolk-shell nanoparticles. Sulfur was chosen as a cathode material due to its high theoretical specific capacity (1675 mA h g−1). However, there are still many technical limitations for Li-S batteries, like the dissolution of the intermediate …
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Molecular Vibrations: The Sulfur-Sulfur Bond in Elemental Sulfur and Construction of a Laser-Raman Spectrograph
Made available in DSpace on 2014-12-09T17:36:00Z (GMT). No. of bitstreams: 1 6812087.pdf: 5706974 bytes, checksum: de23b118e5d657ca63e08c5f443f5c73 (MD5) Previous issue date: 1968
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Mass-independent sulfur isotope fractionation during photochemistry of sulfur dioxide
Mass-independent sulfur isotope signatures are observed in Archean and early Paleoproterozoic sedimentary sulfate and sulfide minerals, and provide the most robust constraints on early atmospheric oxygen levels. Smaller mass-independent sulfur isotope anomalies are observed in ice cores and …
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A thermodynamic study of the zirconium-sulfur, titanium-sulfur and hafnium-sulfur systems in the disulfide-trisulfide region
… between the higher sulfides of zirconium and sulfur at temperatures from 700° to 1000 °C. Both disulfide and trisulfide have been identified by chemical analysis and X-ray diffraction. There exists a two-phase region of 'ZrS<sub>2</sub>' and 'ZrS<sub>3</sub>'. The composition limit of the …
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Stabilization of electron-deficient sulfur by neighboring sulfur and oxygen groups.
… was assigned to a two-center three-electron sulfur-carboxylate oxygen species. The yield of the species formed was pH dependent. At a pH above 3.5 decarboxylation becomes a major decomposition pathway in contrast to the electrochemical experiments where no decarboxylation was seen. The …
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Anionic Amino-Cope Rearrangement Studies and Development of Designer Sulfur-Rich Materials using Sulfur, Sulfur Monochloride and Dithiophosphoric Acids
… well as development and characterizations of new sulfur-rich materials. Chapter 1 presents diverse results of the anionic amino-Cope cascades when strategically employing γ-substituted dienolates nucleophile. In Chapter 2, efforts to challenge anionic amino-Cope reactions with steric effect are …
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SULFUR DEFICIENT TRANSFER RIBONUCLEIC ACID.
SULFUR DEFICIENT TRANSFER RIBONUCLEIC ACID.
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The Far Infrared Sulfur Dioxidelaser
Made available in DSpace on 2014-12-10T19:06:46Z (GMT). No. of bitstreams: 1 7206960.pdf: 3457426 bytes, checksum: d95f235845cdb28cf8ea0a565d24cc11 (MD5) Previous issue date: 1971
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Elemental sulfur from ferrous sulfide
Thesis: B.S., Massachusetts Institute of Technology, Department of Chemical Engineering, 1953
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Biosynthesis of Iron-Sulfur Clusters
… and NifU are involved in the mobilization of sulfur and iron necessary for nitrogenase-specific [Fe-S] cluster assembly. The NifS protein has been shown to have cysteine desulfurase activity and can be used to supply sulfur for the <I>in</I> <I>vitro</I> catalytic formation of [Fe-S] clusters. …
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House at Yellow Sulfur Springs
… and built conceptions of the House at Yellow Sulfur Springs, structural fragments of the project included cast concrete studies, a desired relationship between surface, physical structure and light, an indirect path of entry and pre-existing qualities of the site. These fragments coalesced as …
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The Photochemical Oxidation of Sulfur-Dioxide to Sulfur-Trioxide and Its Effect on Fog Formation
Made available in DSpace on 2015-05-12T17:04:31Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0006946.PDF: 4678627 bytes, checksum: a6d28c4666d6454f5944846d8e335a05 (MD5) Previous issue date: 1953
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Assimilatory sulfur metabolism in marine microorganisms
… assimilation of sulfate into cellular organic sulfur compounds was studied in aerobic marine bacteria, with emphasis on the relationship between sulfur metabolism and protein synthesis. The goal of the study was to develop and apply a method for the quantitative assay of total bacterial protein …
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Specification of Sulfur Forms in Coal
… coal chemistry. The recognition of the role that sulfur plays in coal makes the speciation of sulfur in coal one of the most important research goals. In this research solvent extraction, ultimate analysis, FTIR, TG-FTIR, sulfur methylation, and NMR techniques were employed to make quantitative …
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On Sulfur Sensing in Saccharomyces cerevisiae
The unique chemistry available to sulfur compared to oxygen, such as the ability to exist in numerous oxidation states and greater nucleophilicity, makes many of the biochemical reactions requisite for cellular life possible. As a result of this critical importance, organisms have developed several …
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Flow Injection Analysis of Sulfur Dioxide.
… flow injection analysis system for sulfur dioxide using a West-Gaeke method. Two systems were developed for this purpose: The first system allowed continuous reagent flow into the carrier stream, while the second system allowed programmed injection of reagent into the carrier …
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Synthesis of phosphorus/sulfur-based antivirals
… Attempted coupling of the corresponding sulfur-based analogues is also outlined in this chapter. A synthetic route to two novel phosphonodithioate-containing alcohols is detailed in Chapter 3. Installation of the key carbon-nitrogen bond under Mitsunobu conditions is explored with this …
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