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3,224 Newest Publications about the topic sulfur

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Complexes of a diacetylmonoxime Schiff base of S-methyldithiocarbazate (H2damsm) with Fe(III), Ru(III)/Ru(II), and V(IV); catalytic activity and X-ray crystal structure of [Fe(Hdamsm)2]NO3·H2O

19-Mar-2011 | Ahmed M. El-Hendawy, Ahmed M. Fayed, Mohamed R. Mostafa, Transition Metal Chemistry, 2011

The complexes [M(Hdamsm)2]X·H2O (M = Fe, X = NO3; M = Ru, X = Cl), [Ru(Hdamsm)(PPh3)2X′](X′ = Cl, Br), and [VO(Hdamsm)(acac)] (H2damsm = diacetylmonoxime Schiff base of S-methyldithiocarbazate, Hacac = acetylacetone) have been prepared and characterized by spectroscopic techniques. Their redox ...

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Effect of sulfur on enhancing nitrogen-doping and magnetic properties of carbon nanotubes

19-Mar-2011 | Tongxiang Cui, Ruitao Lv, Zheng-hong Huang, Feiyu Kang, Kunlin Wang, Dehai Wu, Nanoscale Research Letters, 2011

Sulfur (S) is introduced as an additive in the growth atmosphere of carbon nanotubes (CNTs) in the range of 940-1020°C. CNT products with distorted sidewalls can be obtained by S-assisted growth. Moreover, many fascinating CNT structures can also be found in samples grown with S addition, such as ...

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Binding Constants of Mercury and Dissolved Organic Matter Determined by a Modified Ion Exchange Technique

18-Mar-2011 | Wenming Dong; Yongrong Bian; Liyuan Liang; Baohua Gu; Wenming Dong; Yongrong Bian; Liyuan Liang; Baohua Gu, Environmental Science & Technology, 2011

Ion-exchange techniques have been widely used for determining the conditional stability constants (logK) between dissolved organic matter (DOM) and various metal ions in aqueous solution. An exception is mercuric ion, Hg2+, whose exceedingly strong binding with reduced sulfur or thiol-like ...

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Sulfur Dioxide in Water: Structure and Dynamics Studied by an Ab Initio Quantum Mechanical Charge Field Molecular Dynamics Simulation

18-Mar-2011 | Syed Tarique Moin; Len Herald V. Lim; Thomas S. Hofer; Bernhard R. Randolf; Bernd M. Rode, Inorganic Chemistry, 2011

An ab initio Quantum Mechanical Charge Field Molecular Dynamics Simulation (QMCF MD) was performed to investigate structure and dynamics behavior of hydrated sulfur dioxide (SO2) at the Hartree−Fock level of theory employing Dunning DZP basis sets for solute and solvent molecules. The ...

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Evaluation of Genotypic Variation of Broccoli (Brassica oleracea var. italic) in Response to Selenium Treatment

18-Mar-2011 | Silvio J. Ramos; Youxi Yuan; Valdemar Faquin; Luiz Roberto G. Guilherme; Li Li, Journal of Agricultural and Food Chemistry, 2011

Broccoli (Brassica oleracea var. italic) fortified with selenium (Se) has been promoted as a functional food. Here, we evaluated 38 broccoli accessions for their capacity to accumulate Se and for their responses to selenate treatment in terms of nutritional qualities and sulfur gene expresion. We ...

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Preparation of Metallochelating Microbubbles and Study on Their Site-Specific Interaction with rGFP-HisTag as a Model Protein

18-Mar-2011 | Róbert Lukáč; Zuzana Kauerová; Josef Mašek; Eliška Bartheldyová; Pavel Kul ..., Langmuir, 2011

The histidine−metallochelating lipid complex is one of the smallest high affinity binding units used as tools for rapid noncovalent binding of histidine tagged molecules, especially recombinant proteins. The advantage of metallochelating complex over protein−ligand complexes (e.g., ...

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Synergic effect of N‐benzylimine aminothioformamide secondary accelerator during sulfur vulcanization of a styrene‐butadiene‐natural rubber blend

16-Mar-2011 | Shaji. P. Thomas; E. J. Mathew; C. V. Marykkutty, Journal of Applied Polymer Science, 2011

Abstract In this study we reported synergic activity of a novel secondary accelerator N‐Benzylimine aminothioformamide (BIAT) along with tetramethylthiuram disulfide (TMTD) in improving cure and mechanical properties of gum and filled mixes of Styrene‐Butadiene Rubber (SBR). The feasibility of ...

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Bulk Synthesis of Large Diameter Semiconducting Single-Walled Carbon Nanotubes by Oxygen-Assisted Floating Catalyst Chemical Vapor Deposition

16-Mar-2011 | Bing Yu; Chang Liu; Peng-Xiang Hou; Ying Tian; Shisheng Li; Bilu Liu; Feng Li; Esko I. Kauppinen; Hui-Ming Cheng; Bi ..., Journal of the American Chemical Society, 2011

Semiconducting single-walled carbon nanotubes (s-SWCNTs) with a mean diameter of 1.6 nm were synthesized on a large scale by using oxygen-assisted floating catalyst chemical vapor deposition. The oxygen introduced can selectively etch metallic SWCNTs in situ, while the sulfur growth promoter ...

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Effect of Wine Inhibitors on Free Pineapple Stem Bromelain Activity in a Model Wine System

16-Mar-2011 | Marco Esti; Ilaria Benucci; Katia Liburdi; Anna Maria Vittoria Garzillo, Journal of Agricultural and Food Chemistry, 2011

The influence of potential inhibitors, naturally present in wine, on the activity of stem bromelain was investigated in order to evaluate the applicability of this enzyme for protein stabilization in white wine. Bromelain proteolytic activity was tested against a synthetic substrate ...

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Chemical Characterization of Commercial Sherry Vinegar Aroma by Headspace Solid-Phase Microextraction and Gas Chromatography−Olfactometry

16-Mar-2011 | Laura Aceña; Luciano Vera; Josep Guasch; Olga Busto; Montserrat Mestres, Journal of Agricultural and Food Chemistry, 2011

The sensorial representativeness of the headspace solid-phase microextraction (HS-SPME) aroma extract from commercial Sherry vinegars has been determined by direct gas chromatography−olfactometry (D-GCO). Extracts obtained under optimal conditions were used to characterize the aroma of these ...

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