Production of atmospheric sulfur by oceanic plankton
... driving the synthesis, fluxes and transformations of DMSP and DMS are being unveiled5 because such research is not only being addressed from a global biogeochemistry perspective but also from the perspective of other disciplines, such as cell physiology, marine ecology and chemistry. What controls t ...
... driving the synthesis, fluxes and transformations of DMSP and DMS are being unveiled5 because such research is not only being addressed from a global biogeochemistry perspective but also from the perspective of other disciplines, such as cell physiology, marine ecology and chemistry. What controls t ...
W. M. White Geochemistry Chapter 9: Stable Isotopes Chapter 9
... grounds, isotope fractionations could be expected, but also suggested that these fractionations could provide useful geological information. Urey then set up a laboratory to determine the isotopic compositions of natural substances and experimentally determine the temperature dependence of these fra ...
... grounds, isotope fractionations could be expected, but also suggested that these fractionations could provide useful geological information. Urey then set up a laboratory to determine the isotopic compositions of natural substances and experimentally determine the temperature dependence of these fra ...
Physiological and phylogenetic studies of thermophilic
... Four thermophilic hydrogen oxidizing bacteria were isolated from various hot-springs in Grensdalur, Hveragerði, SW-Iceland. The strains were investigated with respect to phylogenetics, physiology, hydrogen uptake rates, biomass yield and sulfur metabolism. Phylogenetic studies of the isolates were d ...
... Four thermophilic hydrogen oxidizing bacteria were isolated from various hot-springs in Grensdalur, Hveragerði, SW-Iceland. The strains were investigated with respect to phylogenetics, physiology, hydrogen uptake rates, biomass yield and sulfur metabolism. Phylogenetic studies of the isolates were d ...
Oxidative Phosphorylation Goal: ATP Synthesis
... • In vivo, P/O ratio closer to 2.5 and 1.5 due to other proton “leaking” – i.e. importing phosphate ...
... • In vivo, P/O ratio closer to 2.5 and 1.5 due to other proton “leaking” – i.e. importing phosphate ...
Sedimentary Petrology 2 - Makerere University Courses
... Sedimentary Petrology 2(1-1) (GLO 2202) Course Level: ...
... Sedimentary Petrology 2(1-1) (GLO 2202) Course Level: ...
Identification of food sources of invertebrates from the seagrass
... C-enriched consumers were the surface-deposit-feeding mollusks, the gastropod Batillaria cumingii and the bivalve Macoma incongrua; however, their δ34S values were markedly lower than those of any of the primary producers sampled, including Z. marina. Although the high δ13C values of grazers and sur ...
... C-enriched consumers were the surface-deposit-feeding mollusks, the gastropod Batillaria cumingii and the bivalve Macoma incongrua; however, their δ34S values were markedly lower than those of any of the primary producers sampled, including Z. marina. Although the high δ13C values of grazers and sur ...
Kinetic mechanism of the dimeric ATP sulfurylase from plants
... Cite this article as: Ravilious, G.E., Herrmann, J., Lee, S.G., Westfall, C.S. and Jez, J.M. (2013) Kinetic mechanism of the dimeric ATP sulfurylase from plants. Biosci. Rep. 33(4), art:e00053.doi:10.1042/BSR20130073 ...
... Cite this article as: Ravilious, G.E., Herrmann, J., Lee, S.G., Westfall, C.S. and Jez, J.M. (2013) Kinetic mechanism of the dimeric ATP sulfurylase from plants. Biosci. Rep. 33(4), art:e00053.doi:10.1042/BSR20130073 ...
Identification of a Chloroplast-encoded 9-kDa
... that centers B and A are iron-sulfur centers (4-7). Based on microwave power saturation studies, these two centers were further assigned as [4Fe-4S] clusters (8).The ESR spectrum of center X also had someresemblance to thoseof iron-sulfur centers (9), and Mossbauer spectroscopy suggestedthat center ...
... that centers B and A are iron-sulfur centers (4-7). Based on microwave power saturation studies, these two centers were further assigned as [4Fe-4S] clusters (8).The ESR spectrum of center X also had someresemblance to thoseof iron-sulfur centers (9), and Mossbauer spectroscopy suggestedthat center ...
Table 4.1 Linnaean Classification System of Organisms. Domain
... Emission of short-lived sulfur compounds into the atmosphere from coastal regions of the ocean ...
... Emission of short-lived sulfur compounds into the atmosphere from coastal regions of the ocean ...
Powerpoint
... • DMS originates from S-methylmethionine (SMM) produced during germination of barley • H2S and SO2 formed in the breakdown of sulfur amino acids and the reduction of inorganic sources like sulfate and sulfite ...
... • DMS originates from S-methylmethionine (SMM) produced during germination of barley • H2S and SO2 formed in the breakdown of sulfur amino acids and the reduction of inorganic sources like sulfate and sulfite ...
Biosynthesis - Planetary Biology
... assembly of hundreds of thousands of different kinds of useful molecules.The molecules produced by biosynthesis include: carbohydrates (including sugars and starches); proteins (including enzymes); nucleic acids (including DNA); and lipids (including cell membranes). Additional molecules synthesized ...
... assembly of hundreds of thousands of different kinds of useful molecules.The molecules produced by biosynthesis include: carbohydrates (including sugars and starches); proteins (including enzymes); nucleic acids (including DNA); and lipids (including cell membranes). Additional molecules synthesized ...
Coexistence of organisms competing for the same substrate: An
... Estimation o f ~ and K s. Continuous cultures were run with sulfide as growth ratelimiting substrate [5]. At various dilution rates, the steady-state sulfide concentration was measured. K s and ~ were then estimated graphically from a double reciprocal plot (BurkLineweaver) o f D vs. s [4]. Estimati ...
... Estimation o f ~ and K s. Continuous cultures were run with sulfide as growth ratelimiting substrate [5]. At various dilution rates, the steady-state sulfide concentration was measured. K s and ~ were then estimated graphically from a double reciprocal plot (BurkLineweaver) o f D vs. s [4]. Estimati ...
- Wiley Online Library
... (SO2 +2H2 SC2H2 O+3S³). Oxidation of sulfur by autotrophic and heterotrophic microorganisms generates sulfuric acid (S³+H2 O+1.5O2 CH2 SO4 ) which, if not neutralised by carbonates or other basic minerals present, can result in a dramatic lowering of pH within microsites or on the macro scale. Of gr ...
... (SO2 +2H2 SC2H2 O+3S³). Oxidation of sulfur by autotrophic and heterotrophic microorganisms generates sulfuric acid (S³+H2 O+1.5O2 CH2 SO4 ) which, if not neutralised by carbonates or other basic minerals present, can result in a dramatic lowering of pH within microsites or on the macro scale. Of gr ...
Fixation of carbon dioxide by chemoautotrophic bacteria
... cluded that the energy of sulfur oxidation was stored in the cell as phosphate bond energy, and COg fixation was coupled with phosphate release. In their experiments the amount of orthophosphate taken up during the oxidation of sulfur in the absence of COg was quantitatively related to the amount of ...
... cluded that the energy of sulfur oxidation was stored in the cell as phosphate bond energy, and COg fixation was coupled with phosphate release. In their experiments the amount of orthophosphate taken up during the oxidation of sulfur in the absence of COg was quantitatively related to the amount of ...
Potential Role of Sulfur-Containing Antioxidant Systems in Highly
... synthesize ATP from ADP and inorganic phosphate (Pi) during the oxidation of organic molecules such as carbohydrates, fats and proteins. Oxidation is a crucial part of both aerobic life and metabolism [1] because it provides energy for the cell to perform its functions. Molecular oxygen, which is ne ...
... synthesize ATP from ADP and inorganic phosphate (Pi) during the oxidation of organic molecules such as carbohydrates, fats and proteins. Oxidation is a crucial part of both aerobic life and metabolism [1] because it provides energy for the cell to perform its functions. Molecular oxygen, which is ne ...
UNIFORM PARTICLES WITH A LARGE SURFACE AREA FORMED
... Table 2 contained about 70 –90% NH4⫹ and 30 –10% H3O⫹ of monovalent cations, i.e., the jarosite formula can be written as (NH4)1⫺x(H3O⫹)xFe3(SO4)2(OH)6 with 0.7 ⬍ x ⬍ 0.9. At pH ⬃ 3 and for a large urea/Fe ratio, schwertmannite is preferred. The above-mentioned pH values typical for the formation of ...
... Table 2 contained about 70 –90% NH4⫹ and 30 –10% H3O⫹ of monovalent cations, i.e., the jarosite formula can be written as (NH4)1⫺x(H3O⫹)xFe3(SO4)2(OH)6 with 0.7 ⬍ x ⬍ 0.9. At pH ⬃ 3 and for a large urea/Fe ratio, schwertmannite is preferred. The above-mentioned pH values typical for the formation of ...
Extraction of Iron (III) from Aqueous Sulfate
... venient to extract Fe(III) from the moderate acidic solution (if the free amine is used as an extraction agent) or from the neutral solutions (if the amine sul fate is used). Under such conditions the proportion of molar concentrations of amine and Fe (III) in a loaded ...
... venient to extract Fe(III) from the moderate acidic solution (if the free amine is used as an extraction agent) or from the neutral solutions (if the amine sul fate is used). Under such conditions the proportion of molar concentrations of amine and Fe (III) in a loaded ...
Determination of Water Content of Crystalline
... variations in their physicochemical and pharmaceutical properties. The number of water molecules of these pharmaceutical ingredients is subordinate to Relative Humidity (RH) and temperature of the maintenance environments of the medicines. The aim of the present study was to investigate variation in ...
... variations in their physicochemical and pharmaceutical properties. The number of water molecules of these pharmaceutical ingredients is subordinate to Relative Humidity (RH) and temperature of the maintenance environments of the medicines. The aim of the present study was to investigate variation in ...
H/ t = W/m
... constant of the thermocouple was found by placing the thermocouple in three consecutive beakers of water that varied in temperature. It was held in the first beaker for 20 seconds then removed for 20 seconds before being placed in the next beaker. LabView was used to record voltage as a function of ...
... constant of the thermocouple was found by placing the thermocouple in three consecutive beakers of water that varied in temperature. It was held in the first beaker for 20 seconds then removed for 20 seconds before being placed in the next beaker. LabView was used to record voltage as a function of ...
Anaerobic respiration with elemental sulfur and with disulfides
... Anaerobic respiration with elemental sulfur/polysulfide or organic disulfides is performed by several bacteria and archaea, but has only been investigated in a few organisms in detail. The electron transport chain that catalyzes polysulfide reduction in the Gram-negative bacterium Wolinella succinog ...
... Anaerobic respiration with elemental sulfur/polysulfide or organic disulfides is performed by several bacteria and archaea, but has only been investigated in a few organisms in detail. The electron transport chain that catalyzes polysulfide reduction in the Gram-negative bacterium Wolinella succinog ...
The Causes of Livestock Odors By: Rick Koelsch
... are stabilized and few odors result during land application. However, odor nuisance form sulfur compounds produced by the lagoon or digester can still be a nuisance. The ammonia related odors originating from manure result from a different set of chemical processes. Urea, the primary source of nitro ...
... are stabilized and few odors result during land application. However, odor nuisance form sulfur compounds produced by the lagoon or digester can still be a nuisance. The ammonia related odors originating from manure result from a different set of chemical processes. Urea, the primary source of nitro ...
J
... structed of highly porous and permeable volcanic greater than 250°C, the remaining sulfate in the rocks that are broken apart in many places by coolfluid reacts with iron in the crust to form metal ing cracks and tectonic fractures. As a consequence, sulfide minerals. reactions between seawater and ...
... structed of highly porous and permeable volcanic greater than 250°C, the remaining sulfate in the rocks that are broken apart in many places by coolfluid reacts with iron in the crust to form metal ing cracks and tectonic fractures. As a consequence, sulfide minerals. reactions between seawater and ...
Metabolic integration during the evolutionary origin of
... oligosaccharide all at once from dolichol phosphate to the protein[20]. Nothing like that occurs in Bacteria. The above features are not found in Bacteria but are universal in eukaryotes, suggesting that they are primitive and should be expected in the ancestor of the nucleocytoplasm. Regarding the ...
... oligosaccharide all at once from dolichol phosphate to the protein[20]. Nothing like that occurs in Bacteria. The above features are not found in Bacteria but are universal in eukaryotes, suggesting that they are primitive and should be expected in the ancestor of the nucleocytoplasm. Regarding the ...
The bright and the dark side of the rumen
... effects in ruminants compared to monogastrics while the opposite might be expected from potentially toxic feed substances which underlie microbial inactivation. The order of magnitude of both aspects depends in many cases on an adequate adaptation of the microbes to the respective substrates. In thi ...
... effects in ruminants compared to monogastrics while the opposite might be expected from potentially toxic feed substances which underlie microbial inactivation. The order of magnitude of both aspects depends in many cases on an adequate adaptation of the microbes to the respective substrates. In thi ...
Sulfur cycle
The sulfur cycle is the collection of processes by which sulfur moves to and from minerals (including the waterways) and living systems. Such biogeochemical cycles are important in geology because they affect many minerals. Biogeochemical cycles are also important for life because sulfur is an essential element, being a constituent of many proteins and cofactors.Steps of the sulfur cycle are: Mineralization of organic sulfur into inorganic forms, such as hydrogen sulfide (H2S), elemental sulfur, as well as sulfide minerals. Oxidation of hydrogen sulfide, sulfide, and elemental sulfur (S) to sulfate (SO42−). Reduction of sulfate to sulfide. Incorporation of sulfide into organic compounds (including metal-containing derivatives).These are often termed as follows:Assimilative sulfate reduction (see also sulfur assimilation) in which sulfate (SO42−) is reduced by plants, fungi and various prokaryotes. The oxidation states of sulfur are +6 in sulfate and –2 in R–SH.Desulfurization in which organic molecules containing sulfur can be desulfurized, producing hydrogen sulfide gas (H2S, oxidation state = –2). An analogous process for organic nitrogen compounds is deamination.Oxidation of hydrogen sulfide produces elemental sulfur (S8), oxidation state = 0. This reaction occurs in the photosynthetic green and purple sulfur bacteria and some chemolithotrophs. Often the elemental sulfur is stored as polysulfides.Oxidation of elemental sulfur by sulfur oxidizers produces sulfate.Dissimilative sulfur reduction in which elemental sulfur can be reduced to hydrogen sulfide.Dissimilative sulfate reduction in which sulfate reducers generate hydrogen sulfide from sulfate.↑