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4,443 Newest Publications about the topic sulfur

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Specific 12CβD212CγD2S13CεHD2 Isotopomer Labeling of Methionine To Characterize Protein Dynamics by 1H and 13C NMR Relaxation Dispersion

02-Nov-2012 | Ulrich Weininger; Zhihong Liu; Deane D. McIntyre; Hans J. Vogel; Mikael Akke, Journal of the American Chemical Society, 2012

Protein dynamics on the micro- to millisecond time scale is increasingly found to be critical for biological function, as demonstrated by numerous NMR relaxation dispersion studies. Methyl groups are excellent probes of protein interactions and dynamics because of their favorable NMR relaxation ...

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Effect of different drying methods on the physicochemical and functional properties of Dioscorea opposita Thunb. starch

01-Nov-2012 | Zhidan Zhang, Wenyuan Gao, Xia Li, Qianqian Jiang, Yuzhuo Xia, Haiyang Wang, Luqi Huang, Lanping Guo, Starch - Stärke, 2012

Abstract The effect of sulfur fumigation and freeze–drying on the physicochemical and functional properties of Dioscorea opposita Thunb. starch was investigated. Freeze–drying markedly decreased the AM content of starch from 16.68 to 8.59%. Both sulfur fumigation and freeze–drying decreased ...

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Regeneration Characteristics and Kinetics of Modified Semi-coke Supported (Fe, Zn, Ce) Desulfurization Sorbents

01-Nov-2012 | Jie Mi; Meng Yu; Fenyun Yuan; Jiancheng Wang, Energy & Fuels, 2012

The effects of the regeneration temperature and sulfur dioxide concentration on the regeneration behavior of modified semi-coke supported (Fe, Zn, Ce) sorbent were investigated using a fixed bed reactor and a thermogravimetric analyzer in the present work. Regeneration kinetic studies were also ...

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Bisulfite-Driven Autocatalysis in the Bromate–Thiosulfate Reaction in a Slightly Acidic Medium

01-Nov-2012 | Zhen Wang; Qingyu Gao; Changwei Pan; Yuemin Zhao; Attila K. Horváth, Inorganic Chemistry, 2012

The thiosulfate–bromate reaction has been studied by high-performance liquid chromatography, monitoring the concentrations of thiosulfate and tetrathionate simultaneously. It is found that concentration–time curves of both species display a sigmoidal shape in a slightly acidic, well-buffered ...

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Sulfur dioxide oxidation induced mechanistic branching and particle formation during the ozonolysis of [small beta]-pinene and 2-butene

31-Oct-2012 | Philip T. M. Carlsson; Claudia Keunecke; Bastian C. Krüger; Mona-C. Maaß; Thomas Zeuch, Physical Chemistry Chemical Physics, 2012

Recent studies have suggested that the reaction of stabilised Criegee Intermediates (CIs) with sulfur dioxide (SO2), leading to the formation of a carbonyl compound and sulfur trioxide, is a relevant atmospheric source of sulfuric acid. Here, the significance of this pathway has been examined by ...

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Smaller Sulfur Molecules Promise Better Lithium–Sulfur Batteries

31-Oct-2012 | Sen Xin; Lin Gu; Na-Hong Zhao; Ya-Xia Yin; Long-Jie Zhou; Yu-Guo Guo; Li-Jun Wan, Journal of the American Chemical Society, 2012

The lithium–sulfur battery holds a high theoretical energy density, 4–5 times that of today’s lithium-ion batteries, yet its applications have been hindered by poor electronic conductivity of the sulfur cathode and, most importantly, the rapid fading of its capacity due to the formation of ...

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ChemInform Abstract: Enhanced Charge‐Transfer Kinetics by Anion Surface Modification of LiFePO4.

30-Oct-2012 | Kyu‐Sung Park, Penghao Xiao, So‐Yeon Kim, Anthony Dylla, Young‐Min Choi, Graeme Henkelman, Keith J. Stevenson, John ..., ChemInform, 2012

Abstract Nitrogen and sulfur adsorption/chemisorption on LiFePO4 particles is characterized by DFT calculations and time of flight secondary ion mass spectrometry.

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Synthesis and Structural Characterization of New Cu(I) Complexes with the Antithyroid Drug 6-n-Propyl-thiouracil. Study of the Cu(I)-Catalyzed Intermolecular Cycloaddition of Iodonium Ylides toward Benzo[b]furans with Pharmaceutical Implementations

30-Oct-2012 | K. Paizanos; D. Charalampou; N. Kourkoumelis; D. Kalpogiannaki; L. Hadjiarapoglou; A. Spanopoulou; K. Lazarou; M. J. ..., Inorganic Chemistry, 2012

The reaction of copper(I) iodide with 6-n-propylthiouracil (ptu) in the presence or absence of the triphenylphosphine (tpp) or tri(p-tolyl)phosphine (tptp) in a 1:1:2 molar ratio forms the mixed ligand Cu(I) complex with formula [CuI(ptu)2](toluene) (1), [CuI(tpp)2(ptu)] (2), and ...

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Preventing Protein Oxidation with Sugars: Scavenging of Hypohalous Acids by 5-Selenopyranose and 4-Selenofuranose Derivatives

30-Oct-2012 | Corin Storkey; David I. Pattison; Jonathan M. White; Carl H. Schiesser; Michael J. Davies, Chemical Research in Toxicology, 2012

Heme peroxidases including myeloperoxidase (MPO) are released at sites of inflammation by activated leukocytes. MPO generates hypohalous acids (HOX, X = Cl, Br, SCN) from H2O2; these oxidants are bactericidal and are key components of the inflammatory response. However, excessive, misplaced or ...

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Microanalytical investigation of nematodes

29-Oct-2012 | Zoltán Sávoly, Péter Nagy, Károly Havancsák, Gyula Záray, Microchemical Journal, 2012

The chemical characterization of individual free-living nematodes is a challenge due to their small size and correspondingly, their low dry mass (1–3μg). The concentrations of minor (S, P, Ca, K) and trace elements (Fe, Zn, Cu, Ni, and Mn) of individual specimens (Xiphinema Vuittenezi) were ...

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