Base de dados : MEDLINE
Pesquisa : D01.029.260.877 [Categoria DeCS]
Referências encontradas : 85 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 9 ir para página                      

  1 / 85 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:27187205
[Au] Autor:Sakka M; Tzortzis G; Mantzaris MD; Bekas N; Kellici TF; Likas A; Galaris D; Gerothanassis IP; Tzakos AG
[Ad] Endereço:Department of Chemistry.
[Ti] Título:PRESS: PRotEin S-Sulfenylation server.
[So] Source:Bioinformatics;32(17):2710-2, 2016 Sep 01.
[Is] ISSN:1367-4811
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:MOTIVATION: Transient S-sulfenylation of cysteine thiols mediated by reactive oxygen species plays a critical role in pathology, physiology and cell signaling. Therefore, discovery of new S-sulfenylated sites in proteins is of great importance towards understanding how protein function is regulated upon redox conditions. RESULTS: We developed PRESS (PRotEin S-Sulfenylation) web server, a server which can effectively predict the cysteine thiols of a protein that could undergo S-sulfenylation under redox conditions. We envisage that this server will boost and facilitate the discovery of new and currently unknown functions of proteins triggered upon redox conditions, signal regulation and transduction, thus uncovering the role of S-sulfenylation in human health and disease. AVAILABILITY AND IMPLEMENTATION: The PRESS web server is freely available at http://press-sulfenylation.cse.uoi.gr/ CONTACTS: agtzakos@gmail.com or gtzortzi@cs.uoi.gr SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.
[Mh] Termos MeSH primário: Proteínas
[Mh] Termos MeSH secundário: Simulação por Computador
Cisteína
Seres Humanos
Oxirredução
Processamento de Proteína Pós-Traducional
Análise de Sequência de Proteína/métodos
Compostos de Sulfidrila
Ácidos de Enxofre/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Proteins); 0 (Sulfhydryl Compounds); 0 (Sulfur Acids); K848JZ4886 (Cysteine)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170731
[Lr] Data última revisão:
170731
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160518
[St] Status:MEDLINE
[do] DOI:10.1093/bioinformatics/btw301


  2 / 85 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26821256
[Au] Autor:Kharina M; Emelyanov V; Mokshina N; Ibragimova N; Gorshkova T
[Ad] Endereço:Kazan National Research Technological University, 68 Karl Marx street, Kazan, Russian Federation, 420015. somariya@mail.ru.
[Ti] Título:Pretreatment of Sugar Beet Pulp with Dilute Sulfurous Acid is Effective for Multipurpose Usage of Carbohydrates.
[So] Source:Appl Biochem Biotechnol;179(2):307-20, 2016 May.
[Is] ISSN:1559-0291
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Sulfurous acid was used for pretreatment of sugar beet pulp (SBP) in order to achieve high efficiency of both extraction of carbohydrates and subsequent enzymatic hydrolysis of the remaining solids. The main advantage of sulfurous acid usage as pretreatment agent is the possibility of its regeneration. Application of sulfurous acid as hydrolyzing agent in relatively low concentrations (0.6-1.0 %) during a short period of time (10-20 min) and low solid to liquid ratio (1:3, 1:6) allowed effective extraction of carbohydrates from SBP and provided positive effect on subsequent enzymatic hydrolysis. The highest obtained concentration of reducing substances (RS) in hydrolysates was 8.5 %; up to 33.6 % of all carbohydrates present in SBP could be extracted. The major obtained monosaccharides were arabinose and glucose (9.4 and 7.3 g/l, respectively). Pretreatment of SBP with sulfurous acid increased 4.6 times the yield of glucose during subsequent enzymatic hydrolysis of remaining solids with cellulase cocktail, as compared to the untreated SBP. Total yield of glucose during SBP pretreatment and subsequent enzymatic hydrolysis amounted to 89.4 % of the theoretical yield. The approach can be applied directly to the wet SBP. Hydrolysis of sugar beet pulp with sulfurous acid is recommended for obtaining of individual monosaccharides, as well as nutritional media.
[Mh] Termos MeSH primário: Beta vulgaris/química
Biocombustíveis
Carboidratos/química
Ácidos de Enxofre/farmacologia
[Mh] Termos MeSH secundário: Arabinose/química
Arabinose/isolamento & purificação
Beta vulgaris/efeitos dos fármacos
Carboidratos/isolamento & purificação
Celulase/química
Celulase/isolamento & purificação
Etanol/química
Fermentação
Glucose/química
Glucose/isolamento & purificação
Hidrólise
Ácidos de Enxofre/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biofuels); 0 (Carbohydrates); 0 (Sulfur Acids); 3K9958V90M (Ethanol); B40ROO395Z (Arabinose); EC 3.2.1.4 (Cellulase); IY9XDZ35W2 (Glucose)
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170116
[Lr] Data última revisão:
170116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160129
[St] Status:MEDLINE
[do] DOI:10.1007/s12010-016-1995-x


  3 / 85 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:26411868
[Au] Autor:Bui VM; Lu CT; Ho TT; Lee TY
[Ad] Endereço:Department of Computer Science and Engineering and.
[Ti] Título:MDD-SOH: exploiting maximal dependence decomposition to identify S-sulfenylation sites with substrate motifs.
[So] Source:Bioinformatics;32(2):165-72, 2016 Jan 15.
[Is] ISSN:1367-4811
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:UNLABELLED: S-sulfenylation (S-sulphenylation, or sulfenic acid), the covalent attachment of S-hydroxyl (-SOH) to cysteine thiol, plays a significant role in redox regulation of protein functions. Although sulfenic acid is transient and labile, most of its physiological activities occur under control of S-hydroxylation. Therefore, discriminating the substrate site of S-sulfenylated proteins is an essential task in computational biology for the furtherance of protein structures and functions. Research into S-sulfenylated protein is currently very limited, and no dedicated tools are available for the computational identification of SOH sites. Given a total of 1096 experimentally verified S-sulfenylated proteins from humans, this study carries out a bioinformatics investigation on SOH sites based on amino acid composition and solvent-accessible surface area. A TwoSampleLogo indicates that the positively and negatively charged amino acids flanking the SOH sites may impact the formulation of S-sulfenylation in closed three-dimensional environments. In addition, the substrate motifs of SOH sites are studied using the maximal dependence decomposition (MDD). Based on the concept of binary classification between SOH and non-SOH sites, Support vector machine (SVM) is applied to learn the predictive model from MDD-identified substrate motifs. According to the evaluation results of 5-fold cross-validation, the integrated SVM model learned from substrate motifs yields an average accuracy of 0.87, significantly improving the prediction of SOH sites. Furthermore, the integrated SVM model also effectively improves the predictive performance in an independent testing set. Finally, the integrated SVM model is applied to implement an effective web resource, named MDD-SOH, to identify SOH sites with their corresponding substrate motifs. AVAILABILITY AND IMPLEMENTATION: The MDD-SOH is now freely available to all interested users at http://csb.cse.yzu.edu.tw/MDDSOH/. All of the data set used in this work is also available for download in the website. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online. CONTACT: francis@saturn.yzu.edu.tw.
[Mh] Termos MeSH primário: Processamento de Proteína Pós-Traducional
Análise de Sequência de Proteína/métodos
Software
Ácidos de Enxofre/metabolismo
Máquina de Vetores de Suporte
[Mh] Termos MeSH secundário: Motivos de Aminoácidos
Aminoácidos/química
Cisteína/metabolismo
Seres Humanos
Proteínas/química
Proteínas/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Amino Acids); 0 (Proteins); 0 (Sulfur Acids); K848JZ4886 (Cysteine)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:160110
[Lr] Data última revisão:
160110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150929
[St] Status:MEDLINE
[do] DOI:10.1093/bioinformatics/btv558


  4 / 85 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25267364
[Au] Autor:Chu W; Li D; Gao N; Templeton MR; Tan C; Gao Y
[Ad] Endereço:State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China. Electronic address: feedwater@126.com.
[Ti] Título:The control of emerging haloacetamide DBP precursors with UV/persulfate treatment.
[So] Source:Water Res;72:340-8, 2015 Apr 01.
[Is] ISSN:1879-2448
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Haloacetamides (HAcAms), an emerging class of nitrogen-containing disinfection byproducts (N-DBPs) of health concern in drinking water, have been reported to occur in treated drinking waters at low µg/L levels typically. The objective of this study was to examine the potential of an ultraviolet light/persulfate (UV/PS) oxidation technology to reduce the precursors of HAcAms and also minimize the formation of other N-DBPs upon subsequent chlorination. Low-pressure UV photolysis alone and PS pre-oxidation alone did not significantly affect HAcAm formation, however UV/PS pre-oxidation achieved a statistically significant reduction in HAcAm formation and also reduced bromine incorporation into the HAcAms. UV/PS also showed a good performance in removing the precursors of haloacetonitriles and halonitromethanes prior to chlorination. Therefore, UV/PS has the potential to minimize the formation of a range of N-DBPs in organic nitrogen-rich waters where N-DBP precursors are prevalent. However, these benefits should be weighed against the potential drawbacks of increased bromate and sulfate formation, particularly in high-bromide waters.
[Mh] Termos MeSH primário: Acetamidas/química
Desinfecção
Sulfatos/química
Ácidos de Enxofre/química
Raios Ultravioleta
[Mh] Termos MeSH secundário: Halogenação
Peso Molecular
Nitrogênio/análise
Fotólise
Qualidade da Água
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Acetamides); 0 (Sulfates); 0 (Sulfur Acids); N762921K75 (Nitrogen)
[Em] Mês de entrada:1601
[Cu] Atualização por classe:150410
[Lr] Data última revisão:
150410
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:141001
[St] Status:MEDLINE


  5 / 85 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25240954
[Au] Autor:Jiang R; Wang M; Xue J; Xu N; Hou G; Zhang W
[Ad] Endereço:Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, PR China. Electronic address: jiangry@ycit.cn.
[Ti] Título:Cytotoxicity of sulfurous acid on cell membrane and bioactivity of Nitrosomonas europaea.
[So] Source:Chemosphere;119:896-901, 2015 Jan.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Nitrosomonas europaea, an ammonia oxidizing bacterium, was chosen as a research model to study the alteration of cell membrane in the presence of sulfurous acid and biodegradation of acetochlor. Significant changes of the outer cell membrane were observed in the presence of sulfurous acid using scanning electron microscopy (SEM) and Atomic Force Microscopy (AFM). The fluorescence polarization has shown a significant decrease in membrane fluidity and the increase of permeability of cell membrane. Lysozyme experiment show the cell becomes easily influenced by substance in medium. Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) measurements show considerable amount of Ca(2+) and Mg(2+) in the supernatant from the sulfurous acid exposed cells. Sulfurous acid treatment enhanced the ability of N. europaea to degrade acetochlor. On this basis, it can be concluded that the increased cell permeability is favor for the absorbability of nutrition. As a result, N. europaea grows faster and the biodegradation efficiency was improved.
[Mh] Termos MeSH primário: Membrana Celular/efeitos dos fármacos
Nitrosomonas europaea/metabolismo
Ácidos de Enxofre/toxicidade
Toluidinas/metabolismo
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Membrana Celular/metabolismo
Espectrometria de Massas
Microscopia de Força Atômica
Microscopia Eletrônica de Varredura
Oxirredução
Permeabilidade
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Sulfur Acids); 0 (Toluidines); 8L08WMO94K (acetochlor)
[Em] Mês de entrada:1509
[Cu] Atualização por classe:141208
[Lr] Data última revisão:
141208
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140922
[St] Status:MEDLINE


  6 / 85 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:25219794
[Au] Autor:Murdachaew G; Gaigeot MP; Halonen L; Gerber RB
[Ad] Endereço:Laboratory of Physical Chemistry, Department of Chemistry, University of Helsinki, P.O. Box 55, FI-00014 Helsinki, Finland. garold.murdachaew@helsinki.fi.
[Ti] Título:First and second deprotonation of H2SO4 on wet hydroxylated (0001) α-quartz.
[So] Source:Phys Chem Chem Phys;16(40):22287-98, 2014 Oct 28.
[Is] ISSN:1463-9084
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:We present an ab initio molecular dynamics study of deprotonation of sulfuric acid on wet quartz, a topic of atmospheric interest. The process is preferred, with 65% of our trajectories at 250 K showing deprotonation. The time distribution of the deprotonation events shows an exponential behavior and predicts an average deprotonation time of a few picoseconds. The process is exoergic, with most of the temperature increase being due to formation of hydrogen bonds prior to deprotonation. In agreement with existing studies of H2SO4 in water clusters, in liquid water, and at the air-water interface, the main determinant of deprotonation is the degree of solvation of H2SO4 by neighboring water molecules. However, we find that if both hydrogens of H2SO4 are simultaneously donated to water oxygens, deprotonation is disfavored. Predicted spectroscopic signatures showing the presence of solvated hydronium and bisulfate are presented. Increasing the temperature up to 330 K accelerates the process but does not change the main features of the deprotonation mechanisms or the spectroscopic signatures. The second deprotonation of H2SO4, studied only at 250 K, occurs provided there is sufficient solvation of the bisulfate by additional water molecules. In comparison to HCl deprotonation on the identical surface examined in our previous work, the first deprotonation of H2SO4 occurs more readily and releases more energy.
[Mh] Termos MeSH primário: Quartzo
Ácidos de Enxofre/química
[Mh] Termos MeSH secundário: Hidroxilação
Simulação de Dinâmica Molecular
Prótons
Teoria Quântica
Molhabilidade
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Protons); 0 (Sulfur Acids); 14808-60-7 (Quartz)
[Em] Mês de entrada:1510
[Cu] Atualização por classe:140924
[Lr] Data última revisão:
140924
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140916
[St] Status:MEDLINE
[do] DOI:10.1039/c4cp02752c


  7 / 85 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:24923511
[Au] Autor:Wang L; Yang L; Cao D
[Ad] Endereço:School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China, 510640, lingyun@scut.edu.cn.
[Ti] Título:Detection of HSO4⁻ ion based on the hydrolysis of diketopyrrolopyrrole-derived Schiff base with chromogenic and fluorogenic dual signals.
[So] Source:J Fluoresc;24(4):1347-55, 2014 Jul.
[Is] ISSN:1573-4994
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:A new diketopyrrolopyrrole-based Schiff base L was synthesized and its anion sensing behavior was explored. L showed exclusive response toward HSO4(-) ion and also distinguished HSO4(-) from other anions by color changes (from dark red to orange) and 21 fold fluorescence enhancement at 370 nm in aqueous solution (THF/H2O = 8/1, v/v). The sensing mechanism was suggested to proceed via a hydrolysis process. The results provided colorimetric and fluorimetric assays to selectively detect the presence of a HSO4(-) over a wide range of other interfering anions. The results could potentially be used as a dual colorimetric-fluorescent probe for monitoring HSO4(-) levels in physiological and environmental systems.
[Mh] Termos MeSH primário: Fluorometria
Pirróis/química
Ácidos de Enxofre/análise
[Mh] Termos MeSH secundário: Colorimetria
Hidrólise
Íons/análise
Estrutura Molecular
Pirróis/síntese química
Bases de Schiff/síntese química
Bases de Schiff/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Ions); 0 (Pyrroles); 0 (Schiff Bases); 0 (Sulfur Acids)
[Em] Mês de entrada:1505
[Cu] Atualização por classe:171027
[Lr] Data última revisão:
171027
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:140614
[St] Status:MEDLINE
[do] DOI:10.1007/s10895-014-1421-0


  8 / 85 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:24175330
[Au] Autor:Fegade U; Sharma H; Tayade K; Attarde S; Singh N; Kuwar A
[Ti] Título:An amide based dipodal Zn(2+) complex: nano-molar detection of HSO(4) (−) in a semi-aqueous system.
[So] Source:Org Biomol Chem;11(39):6824-8, 2013 Oct 21.
[Is] ISSN:1477-0539
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A new chromogenic dipodal Zn2+ complex (4) bearing an amide group has been synthesized. The anion binding profile of this sensor was investigated with fluorescence and UV-Vis spectroscopy. The receptor 4 has high affinity for HSO4 − with a binding constant of 3.5 × 104 M−1 and a detection limit of 50 nM. The binding ability was confirmed with spectroscopic methods and density functional theory calculation (DFT).
[Mh] Termos MeSH primário: Amidas/química
Complexos de Coordenação/química
Teoria Quântica
Ácidos de Enxofre/química
Zinco/química
[Mh] Termos MeSH secundário: Estrutura Molecular
Água/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Amides); 0 (Coordination Complexes); 0 (Sulfur Acids); 059QF0KO0R (Water); J41CSQ7QDS (Zinc)
[Em] Mês de entrada:1404
[Cu] Atualização por classe:131030
[Lr] Data última revisão:
131030
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:131101
[St] Status:MEDLINE
[do] DOI:10.1039/c3ob41291a


  9 / 85 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
[PMID]:23914556
[Au] Autor:Wen B; Yin Y; Qing YS; Chen K
[Ad] Endereço:Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science Technology, Nanjing 210044, China. wenbinqz@163.com
[Ti] Título:[Chemical characteristics of water-soluble components of aerosol particles at different altitudes of the Mount Huang in the summer].
[So] Source:Huan Jing Ke Xue;34(5):1973-81, 2013 May.
[Is] ISSN:0250-3301
[Cp] País de publicação:China
[La] Idioma:chi
[Ab] Resumo:Aerosol was collected with Anderson cascade sampler at three altitudes of the Mount Huang in the summer 2011. Samples were analyzed by the ion chromatography (IC, Metrohm). The results showed that the mean mass concentrations of all the ions were 13.21 microg x m(-1), 10.94 microg x m(-3), 9.97 microg x m(-3), at the foot, mid height and the summit of the mountain, respectively. The mass concentration of water-soluble components of aerosol decreased with altitude. The major anion and cation of aerosols were SO4(2-) and NH4+, respectively. The descending order of mass concentration of major ionic species was: SO4(2-) > NH4+ > Ca2+ > NO3- and NH4+ account for about 75% of total ionic concentrations of PM2.1 in three sampling sites. The concentration of SO4(2-) and NH4+ decreased conspicuously with altitude. The major cation and anion of coarse mode particles were Ca2+ and NO3-, respectively. The slope of the linear regression line between anion and cation of PM10 and PM2.1 approximates 1, indicating acid-base balance in aerosol particles. Aerosols over the region Mount Huang were influenced by anthropogenic source of surrounding areas to a certain extent. The result also suggested that the correlation between NH4+ and SO4(2-) was 0. 98 and these ions predominantly existed in the form of (NH4)2SO4 and NH4HSO4. Backward trajectory analysis revealed that the air mass was originated from southern coastal regions, the East China Sea, the Yellow Sea and the northern China. Due to the northern air masses go through heavily polluted areas, concentrations of water-soluble ions in these air masses were higher than that of other air masses. The concentration of K+ in northern air mass was several times higher than that in southwestern air mass.
[Mh] Termos MeSH primário: Aerossóis/análise
Poluentes Atmosféricos/química
Monitoramento Ambiental/métodos
Material Particulado/análise
[Mh] Termos MeSH secundário: Aerossóis/química
Altitude
Atmosfera/análise
China
Íons/análise
Íons/química
Tamanho da Partícula
Compostos de Amônio Quaternário/análise
Solubilidade
Ácidos de Enxofre/análise
[Pt] Tipo de publicação:ENGLISH ABSTRACT; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Aerosols); 0 (Air Pollutants); 0 (Ions); 0 (Particulate Matter); 0 (Quaternary Ammonium Compounds); 0 (Sulfur Acids)
[Em] Mês de entrada:1408
[Cu] Atualização por classe:161018
[Lr] Data última revisão:
161018
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130807
[St] Status:MEDLINE


  10 / 85 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:23534485
[Au] Autor:Crabtree KN; Martinez O; Barreau L; Thorwirth S; McCarthy MC
[Ad] Endereço:Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138, USA.
[Ti] Título:Microwave detection of sulfoxylic acid (HOSOH).
[So] Source:J Phys Chem A;117(17):3608-13, 2013 May 02.
[Is] ISSN:1520-5215
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Sulfoxylic acid (HOSOH), a chemical intermediate roughly midway along the path between highly reduced (H2S) and highly oxidized sulfur (H2SO4), has been detected using Fourier transform microwave spectroscopy and double resonance techniques, guided by new high-level CCSD(T) quantum-chemical calculations of its molecular structure. Rotational spectra of the two most stable isomers of HOSOH, the putative ground state with C2 symmetry and the low-lying C(s) rotamer, have been measured to high precision up to 71 GHz, allowing accurate spectroscopic parameters to be derived for both isomers. HOSOH may play a role in atmospheric and interstellar chemistry, and the present work provides the essential data to enable remote sensing and/or radioastronomical searches for these species. Spectroscopic characterization of HOSOH suggests that other transient intermediates in the oxidation of SO2 to H2SO4 may be amenable to laboratory detection as well.
[Mh] Termos MeSH primário: Micro-Ondas
Ácidos de Enxofre/química
[Mh] Termos MeSH secundário: Teoria Quântica
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Sulfur Acids)
[Em] Mês de entrada:1311
[Cu] Atualização por classe:130502
[Lr] Data última revisão:
130502
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:130329
[St] Status:MEDLINE
[do] DOI:10.1021/jp400742q



página 1 de 9 ir para página                      
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde