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[PMID]:28953660
[Au] Autor:Xie F; Zhang X; Xie L
[Ad] Endereço:Department of Pulmonary and Critical Care Medicine, Chinese PLA General Hospital, Beijing, China.
[Ti] Título:Prognostic value of serum zinc levels in patients with acute HC/zinc chloride smoke inhalation.
[So] Source:Medicine (Baltimore);96(39):e8156, 2017 Sep.
[Is] ISSN:1536-5964
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Hexachloroethane (HC)/zinc chloride (ZnCl, smoke bomb) exposure in the military setting results in lung injury which is uncommon and has been rarely described in previous studies. The aim of this study is to investigate the correlation between the serum zinc in patients with HC/ZnCl smoke inhalation lung injury and disease severity. A total of 15 patients with HC/ZnCl-related conditions were recruited in this study. The serum zinc level and the pulmonary function tests and liver function tests including total lung capacity (TLC), forced vital capacity (FVC), forced expiratory pressure in 1 second (FEV1), alanine aminotransferase (ALT), and aspartate transaminase (AST) were analyzed. Eleven cases had mild clinical manifestations. Four cases rapidly developed features typical of severe adult respiratory distress syndrome. The level of serum zinc was increased, but FVC, FEV1, and TLC was decreased significantly in the moderate and severe cases. In addition, the serum zinc level correlated well with the TLC, FVC, and FEV1 (r = -0.587, -0.626, -0.617, respectively; P = .027, .017, .019, respectively). The 4 cases in moderate and severe group had delayed impairment of liver functions after the accident. This study suggested that the serum zinc level may be associated with the severity of lung and liver injuries after HC/ZnCl smoke inhalation.
[Mh] Termos MeSH primário: Bombas (Dispositivos Explosivos)
Doença Hepática Induzida por Substâncias e Drogas
Cloretos
Etano/análogos & derivados
Hidrocarbonetos Clorados
Lesão Pulmonar
Síndrome do Desconforto Respiratório do Adulto
Lesão por Inalação de Fumaça
Compostos de Zinco
Zinco/sangue
[Mh] Termos MeSH secundário: Adulto
Alanina Transaminase/sangue
Aspartato Aminotransferases/sangue
Doença Hepática Induzida por Substâncias e Drogas/sangue
Doença Hepática Induzida por Substâncias e Drogas/diagnóstico
Doença Hepática Induzida por Substâncias e Drogas/etiologia
China
Cloretos/química
Cloretos/toxicidade
Etano/química
Etano/toxicidade
Feminino
Seres Humanos
Hidrocarbonetos Clorados/química
Hidrocarbonetos Clorados/toxicidade
Lesão Pulmonar/sangue
Lesão Pulmonar/induzido quimicamente
Lesão Pulmonar/diagnóstico
Masculino
Militares
Valor Preditivo dos Testes
Prognóstico
Síndrome do Desconforto Respiratório do Adulto/sangue
Síndrome do Desconforto Respiratório do Adulto/diagnóstico
Síndrome do Desconforto Respiratório do Adulto/etiologia
Testes de Função Respiratória
Índice de Gravidade de Doença
Fumaça/análise
Lesão por Inalação de Fumaça/sangue
Lesão por Inalação de Fumaça/diagnóstico
Lesão por Inalação de Fumaça/etiologia
Estatística como Assunto
Compostos de Zinco/química
Compostos de Zinco/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chlorides); 0 (Hydrocarbons, Chlorinated); 0 (Smoke); 0 (Zinc Compounds); 86Q357L16B (zinc chloride); EC 2.6.1.1 (Aspartate Aminotransferases); EC 2.6.1.2 (Alanine Transaminase); G30K3QQT4J (hexachloroethane); J41CSQ7QDS (Zinc); L99N5N533T (Ethane)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170928
[St] Status:MEDLINE
[do] DOI:10.1097/MD.0000000000008156


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[PMID]:28683333
[Au] Autor:Yin J; Wu B; Zhang XX; Xian Q
[Ad] Endereço:State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, PR China.
[Ti] Título:Comparative toxicity of chloro- and bromo-nitromethanes in mice based on a metabolomic method.
[So] Source:Chemosphere;185:20-28, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Halonitromethanes (HNMs) as one typical class of nitrogenous disinfection byproducts have been widely found in drinking water. In vitro test found HNMs could induce higher cytotoxicity and genotoxicity than trihalomethanes and haloacetic acids. However, data on toxic effect from in vivo experiment is limited. In this study, bromonitromethane (BNM), bromochloronitromethane (BCNM) and trichloronitromethane (TCNM) were chosen as target HNMs, and exposed to mice for 30 d. Hepatic toxicity and serum metabolic profiles were determined to reveal toxic effects and mechanisms of the three HNMs. Results showed the three HNMs significantly decreased relative liver weight, indicating liver is one of the target organs. Further, the three HNMs exposure damaged hepatic antioxidant defense system, and increased oxidative DNA damage. Nuclear magnetic resonance based metabolomics analysis found amino acid metabolism and carbohydrate metabolism were disturbed by HNMs exposure. Some metabolites in these metabolisms are related to oxidative stress and damage. Combined with above results, BNM had the highest toxicity, followed by BCNM and TCNM, indicating bromo-HNMs had higher toxicity than chloro-HNMs. Induction of oxidative stress is one of the toxicity mechanisms of HNMs. This study firstly provides the insight into in vivo toxicity of HNMs and their underlying mechanisms based on metabolomics methods, which is very useful for their health risk assessment in drinking water.
[Mh] Termos MeSH primário: Desinfetantes/toxicidade
Etano/análogos & derivados
Metabolômica/métodos
Metano/análogos & derivados
Nitrocompostos/toxicidade
Nitroparafinas/toxicidade
Testes de Toxicidade/métodos
[Mh] Termos MeSH secundário: Animais
Dano ao DNA
Desinfecção
Água Potável/análise
Etano/toxicidade
Hidrocarbonetos Clorados
Metano/toxicidade
Camundongos
Nitrogênio/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Disinfectants); 0 (Drinking Water); 0 (Hydrocarbons, Chlorinated); 0 (Nitro Compounds); 0 (Nitroparaffins); EG63P9EUR0 (bromonitromethane); I4JTX7Z7U2 (chloropicrin); L99N5N533T (Ethane); N762921K75 (Nitrogen); OP0UW79H66 (Methane); RU5WG8C3F4 (nitromethane)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170707
[St] Status:MEDLINE


  3 / 1052 MEDLINE  
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[PMID]:28525868
[Au] Autor:Brakstad OG; Almås IK; Krause DF
[Ad] Endereço:SINTEF Ocean, Dept. Environmental Technology, N-7465, Trondheim, Norway. Electronic address: odd.brakstad@sintef.no.
[Ti] Título:Biotransformation of natural gas and oil compounds associated with marine oil discharges.
[So] Source:Chemosphere;182:555-558, 2017 Sep.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Field data from the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico (GoM) suggested that oxidation of gas compounds stimulated biodegradation of oil compounds in the deep sea plume. We performed experiments with local seawater from a Norwegian fjord to examine if the presence of dissolved gas compounds (methane, ethane and propane) affected biodegradation of volatile oil compounds, and if oil compounds likewise affected gas compound oxidation. The results from the experiment showed comparable oil compound biotransformation rates in seawater at 5 °C between seawater with and without soluble gases. Gas oxidation was not affected by the presence of volatile oil compounds. Contrary to DWH deep sea plume data, propane oxidation was not faster than methane oxidation. These data may reflect variations between biodegradation of oil and gas in seawater environments with different history of oil and gas exposure.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Biotransformação
Gás Natural
Poluição por Petróleo
[Mh] Termos MeSH secundário: Etano
Golfo do México
Metano
Água do Mar
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Natural Gas); L99N5N533T (Ethane); OP0UW79H66 (Methane)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170915
[Lr] Data última revisão:
170915
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170520
[St] Status:MEDLINE


  4 / 1052 MEDLINE  
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[PMID]:28494973
[Au] Autor:Motono T; Kitagawa S; Ohtani H
[Ad] Endereço:Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555, Japan.
[Ti] Título:Retention in high-performance liquid chromatography at -196°C.
[So] Source:J Chromatogr A;1503:32-37, 2017 Jun 23.
[Is] ISSN:1873-3778
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Recently, we have developed ultralow-temperature high-performance liquid chromatography (HPLC) at -196°C using liquid nitrogen-based mobile phases. In this study, a retention model for ultralow-temperature HPLC, in which adsorption exchange and "pseudo partition" modes are combined, is proposed to describe the effect of the mobile phase composition on the retention of analytes. The experimental results agreed well with the equation of the proposed model. It was revealed that, in the low and high additive concentration regions, adsorption exchange and pseudo partition retention, respectively, dominate the analyte retention. The difference in the retention behavior between bare-silica and octadecylsilyl-modified silica (ODS) columns was also studied. Retention of alkanes in the ODS column was greater than that in the bare-silica one. Addition of both ethane and ethylene to the mobile phase in the ODS column afforded the elution of propylene, which was not eluted with the bare-silica column at -196°C.
[Mh] Termos MeSH primário: Cromatografia Líquida de Alta Pressão
Temperatura Baixa
Dióxido de Silício/química
[Mh] Termos MeSH secundário: Adsorção
Etano/química
Etilenos/química
Polipropilenos/isolamento & purificação
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ethylenes); 0 (Polypropylenes); 0 (octadecylsilica); 7631-86-9 (Silicon Dioxide); 91GW059KN7 (ethylene); L99N5N533T (Ethane)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170713
[Lr] Data última revisão:
170713
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170513
[St] Status:MEDLINE


  5 / 1052 MEDLINE  
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[PMID]:28436826
[Au] Autor:Dong H; Qiang Z; Lian J; Qu J
[Ad] Endereço:Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing 100085, China.
[Ti] Título:Degradation of nitro-based pharmaceuticals by UV photolysis: Kinetics and simultaneous reduction on halonitromethanes formation potential.
[So] Source:Water Res;119:83-90, 2017 Aug 01.
[Is] ISSN:1879-2448
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This study investigated the degradation kinetics and halonitromethanes formation potential (HNMsFP) of two nitro-based pharmaceuticals (i.e., ranitidine (RNTD) and nizatidine (NZTD)) during ultraviolet (UV) photolysis. It was found that the degradation kinetics of RNTD and NZTD exhibited pH-dependent trends, in accordance with their deprotonation equilibria. The neutral species of RNTD and NZTD were more photo-reactive than their corresponding deprotonated species, with their specific fluence-based first-order rate constants varying in the range of 5.64-31.90 m E . Both the RNTD and NZTD were prone precursors of HNMs (with molar yields of 5.6± 0.3% and 4.7± 0.4%, respectively at pH 7.0). Acidic and neutral circumstances facilitated the HNMs formation. The UV photolysis of RNTD and NZTD could reduce their HNMsFP simultaneously. Positive linear relationships between residual RNTD or NZTD concentration and HNMsFP were observed and the denitration during the UV photolysis accounted for the HNMsFP reduction. With the mandatory UV disinfection fluences in China (i.e. 20-80 mJ cm ), the effective abatement of RNTD and NZTD and their HNMsFP could not be fully achieved, highlighting the necessity of increasing UV fluence or developing UV-based advanced oxidation process in future.
[Mh] Termos MeSH primário: Fotólise
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: China
Etano/análogos & derivados
Peróxido de Hidrogênio
Cinética
Metano/análogos & derivados
Preparações Farmacêuticas
Raios Ultravioleta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Pharmaceutical Preparations); 0 (Water Pollutants, Chemical); BBX060AN9V (Hydrogen Peroxide); L99N5N533T (Ethane); OP0UW79H66 (Methane)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171019
[Lr] Data última revisão:
171019
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170425
[St] Status:MEDLINE


  6 / 1052 MEDLINE  
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[PMID]:28413084
[Au] Autor:Ren M; Zeng H; Peng PA; Li HR; Tang CM; Hu JF
[Ad] Endereço:State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: renmanrm@163.com.
[Ti] Título:Brominated dioxins/furans and hydroxylated polybrominated diphenyl ethers: Occurrences in commercial 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE) and 2,4,6-tribromophenol, and formation during synthesis of BTBPE.
[So] Source:Environ Pollut;226:394-403, 2017 Jul.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Polybrominated dibenzo-p-dioxins (PBDDs) and hydroxylated polybrominated diphenyl ethers (OH-PBDEs) can be formed from bromophenols (BPs) by thermal degradation, biosynthesis or phototransformation. However, it is unknown whether PBDDs and OH-PBDEs can be formed during the chemical production processes that utilize BPs as raw materials. 2,4,6-tribromophenol (2,4,6-TBP) is an important raw material for the synthesis of 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE), a novel brominated flame retardant. In this study, PBDDs, polybrominated dibenzofurans (PBDFs) and OH-PBDEs have been identified and quantified in commercially available BTBPE and 2,4,6-TBP. Furthermore, their formation as unintentional by-products during the laboratory synthesis of BTBPE from 2,4,6-TBP and 1,2-dibromoethane in the presence of sodium carbonate has also been investigated. 2,3,7,8-substituted PBDDs and PBDFs (2,3,7,8-PBDD/Fs) were undetectable in commercial samples of BTBPE and present in low levels (nanogram per gram) in 2,4,6-TBP. Two tetrabrominated dibenzo-p-dioxins (TeBDDs), namely 1,3,6,8- and 1,3,7,9-TeBDD, and three hydroxylated pentabrominated diphenyl ethers (OH-pentaBDEs), namely 4'-OH-BDE121, 2'-OH-BDE121, and 6'-OH-BDE100, were identified or tentatively identified, and quantitatively estimated to be at concentrations in the range of undetectable to several thousands of nanograms per gram in commercial BTBPE and 2,4,6-TBP. TeBDDs and OH-pentaBDEs were formed as by-products from 2,4,6-TBP during BTBPE synthesis. Further studies need to be conducted in order to determine whether PBDD/Fs and OH-PBDEs are also formed during the industrial synthesis of other chemical compounds that utilize BPs as raw materials or intermediates.
[Mh] Termos MeSH primário: Bromobenzenos/análise
Dioxinas/análise
Furanos/análise
Éteres Difenil Halogenados/análise
Fenóis/análise
[Mh] Termos MeSH secundário: Etano
Retardadores de Chama
Éteres Difenil Halogenados/química
Hidroxilação
Éteres Fenílicos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bromobenzenes); 0 (Dioxins); 0 (Flame Retardants); 0 (Furans); 0 (Halogenated Diphenyl Ethers); 0 (Phenols); 0 (Phenyl Ethers); 34I00D6RNM (1,2-bis(2,4,6-tribromophenoxy)ethane); 3O695R5M1U (phenyl ether); L99N5N533T (Ethane); O1B5KJ235I (dibenzo(1,4)dioxin); YS6K3EU393 (2,4,6-tribromophenol)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170418
[St] Status:MEDLINE


  7 / 1052 MEDLINE  
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[PMID]:28401762
[Au] Autor:Gvakharia A; Kort EA; Brandt A; Peischl J; Ryerson TB; Schwarz JP; Smith ML; Sweeney C
[Ad] Endereço:Climate and Space Sciences and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States.
[Ti] Título:Methane, Black Carbon, and Ethane Emissions from Natural Gas Flares in the Bakken Shale, North Dakota.
[So] Source:Environ Sci Technol;51(9):5317-5325, 2017 May 02.
[Is] ISSN:1520-5851
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Incomplete combustion during flaring can lead to production of black carbon (BC) and loss of methane and other pollutants to the atmosphere, impacting climate and air quality. However, few studies have measured flare efficiency in a real-world setting. We use airborne data of plume samples from 37 unique flares in the Bakken region of North Dakota in May 2014 to calculate emission factors for BC, methane, ethane, and combustion efficiency for methane and ethane. We find no clear relationship between emission factors and aircraft-level wind speed or between methane and BC emission factors. Observed median combustion efficiencies for methane and ethane are close to expected values for typical flares according to the US EPA (98%). However, we find that the efficiency distribution is skewed, exhibiting log-normal behavior. This suggests incomplete combustion from flares contributes almost 1/5 of the total field emissions of methane and ethane measured in the Bakken shale, more than double the expected value if 98% efficiency was representative. BC emission factors also have a skewed distribution, but we find lower emission values than previous studies. The direct observation for the first time of a heavy-tail emissions distribution from flares suggests the need to consider skewed distributions when assessing flare impacts globally.
[Mh] Termos MeSH primário: Metano
Gás Natural
[Mh] Termos MeSH secundário: Poluentes Atmosféricos
Carbono
Etano
North Dakota
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Natural Gas); 7440-44-0 (Carbon); L99N5N533T (Ethane); OP0UW79H66 (Methane)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170621
[Lr] Data última revisão:
170621
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170413
[St] Status:MEDLINE
[do] DOI:10.1021/acs.est.6b05183


  8 / 1052 MEDLINE  
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[PMID]:28235741
[Au] Autor:Chen W; Ni J
[Ad] Endereço:Ministry of Education Key Laboratory of Humid Subtropical Eco-geographical Process, College of Geographical Sciences, Fujian Normal University, Fuzhou, Fujian 350007, China. Electronic address: fengweichen1986@163.com.
[Ti] Título:Different effects of surface heterogeneous atoms of porous and non-porous carbonaceous materials on adsorption of 1,1,2,2-tetrachloroethane in aqueous environment.
[So] Source:Chemosphere;175:323-331, 2017 May.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The surface heterogeneous atoms of carbonaceous materials (CMs) play an important role in adsorption of organic pollutants. However, little is known about the surface heterogeneous atoms of CMs might generate different effect on adsorption of hydrophobic organic compounds by porous carbonaceous materials - activated carbons (ACs) and non-porous carbonaceous materials (NPCMs). In this study, we observed that the surface oxygen and nitrogen atoms could decrease the adsorption affinity of both ACs and NPCMs for 1,1,2,2-tetrachloroethane (TeCA), but the degree of decreasing effects were very different. The increasing content of surface oxygen and nitrogen ([O + N]) caused a sharper decrease in adsorption affinity of ACs (slope of lg (k /SA) vs [O + N]: -0.098∼-0.16) than that of NPCMs (slope of lg (k /SA) vs [O + N]: -0.025∼-0.059) for TeCA. It was due to the water cluster formed by the surface hydrophilic atoms that could block the micropores and generate massive invalid adsorption sites in the micropores of ACs, while the water cluster only occupied the surface adsorption sites of NPCMs. Furthermore, with the increasing concentration of dissolved TeCA, the effect of surface area on adsorption affinity of NPCMs for TeCA kept constant while the effect of [O + N] decreased due to the competitive adsorption between water molecule and TeCA on the surface of NPCMs, meanwhile, both the effects of micropore volume and [O + N] on adsorption affinity of ACs for TeCA were decreased due to the mechanism of micropore volume filling. These findings are valuable for providing a deep insight into the adsorption mechanisms of CMs for TeCA.
[Mh] Termos MeSH primário: Etano/análogos & derivados
Hidrocarbonetos Clorados/química
Poluentes Químicos da Água/química
[Mh] Termos MeSH secundário: Adsorção
Carbono/química
Etano/química
Interações Hidrofóbicas e Hidrofílicas
Nitrogênio/química
Oxigênio/química
Porosidade
Água/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Hydrocarbons, Chlorinated); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 1L6BI049XV (1,1,2,2-tetrachloroethane); 7440-44-0 (Carbon); L99N5N533T (Ethane); N762921K75 (Nitrogen); S88TT14065 (Oxygen)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170523
[Lr] Data última revisão:
170523
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170226
[St] Status:MEDLINE


  9 / 1052 MEDLINE  
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[PMID]:28133941
[Au] Autor:Wan H; Mao Y; Liu Z; Bai Q; Peng Z; Bao J; Wu G; Liu Y; Wang D; Xie J
[Ad] Endereço:Department of New Energy Technology, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, P.R. China.
[Ti] Título:Influence of Enhanced O Provision on the Discharge Performance of Li-air Batteries by Incorporating Fluoroether.
[So] Source:ChemSusChem;10(7):1385-1389, 2017 Apr 10.
[Is] ISSN:1864-564X
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:As the first step during discharge, the mass transfer of oxygen should play a crucial role in Li-air batteries to tailor the growth of discharge products, however, not enough attention has been paid to this issue. Herein, we introduce an oxygen-enriching cosolvent, 1,2-(1,1,2,2-tetrafluoroethoxy) ethane (FE1), into the electrolyte, and investigate its influence on the discharge performance. The incorporation of this novel cosolvent consistently enhances the oxygen solubility of the electrolyte, and improves the oxygen diffusivity following a volcano-shape trend peaking at 50 % FE1. It is interesting that the discharge capacities obtained with the investigated electrolytes share the similar volcano trends as the oxygen transport under 50 mA g and higher current densities. The improved oxygen diffusion could benefit the volumetric utilization of the air cathode, especially at the separator side, probably owing to the fast oxygen transport to moderate its concentration gradient. Our results demonstrate the importance of oxygen provision, which easily becomes the capacity-determining factor.
[Mh] Termos MeSH primário: Ar
Fontes de Energia Elétrica
Etano/química
Etil-Éteres/química
Lítio/química
Oxigênio/química
[Mh] Termos MeSH secundário: Condutividade Elétrica
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ethyl Ethers); 9FN79X2M3F (Lithium); L99N5N533T (Ethane); S88TT14065 (Oxygen)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170606
[Lr] Data última revisão:
170606
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170131
[St] Status:MEDLINE
[do] DOI:10.1002/cssc.201601725


  10 / 1052 MEDLINE  
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[PMID]:28126048
[Au] Autor:Key TA; Bowman KS; Lee I; Chun J; Albuquerque L; da Costa MS; Rainey FA; Moe WM
[Ad] Endereço:1​Department of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.
[Ti] Título:Dehalogenimonas formicexedens sp. nov., a chlorinated alkane-respiring bacterium isolated from contaminated groundwater.
[So] Source:Int J Syst Evol Microbiol;67(5):1366-1373, 2017 May.
[Is] ISSN:1466-5034
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A strictly anaerobic, Gram-stain-negative, non-spore-forming bacterium designated NSZ-14T, isolated from contaminated groundwater in Louisiana (USA), was characterized using a polyphasic approach. Strain NSZ-14T reductively dehalogenated a variety of polychlorinated aliphatic alkanes, producing ethene from 1,2-dichloroethane, propene from 1,2-dichloropropane, a mixture of cis- and trans-1,2-dichloroethene from 1,1,2,2-tetrachloroethane, vinyl chloride from 1,1,2-trichloroethane and allyl chloride (3-chloro-1-propene) from 1,2,3-trichloropropane. Formate or hydrogen could both serve as electron donors. Dechlorination occurred between pH 5.5 and 7.5 and over a temperature range of 20-37 °C. Major cellular fatty acids included C18 : 1ω9c, C14 : 0 and C16 : 0. 16S rRNA gene sequence-based phylogenetic analysis indicated that the strain clusters within the class Dehalococcoidia of the phylum Chloroflexi, most closely related to but distinct from type strains of the species Dehalogenimonas alkenigignens (97.63 % similarity) and Dehalogenimonas lykanthroporepellens (95.05 %). A complete genome sequence determined for strain NSZ-14T revealed a DNA G+C content of 53.96 mol%, which was corroborated by HPLC (54.1±0.2 mol% G+C). Genome-wide comparisons based on average nucleotide identity by orthology and estimated DNA-DNA hybridization values combined with phenotypic and chemotaxonomic traits and phylogenetic analysis indicate that strain NSZ-14T represents a novel species within the genus Dehalogenimonas, for which the name Dehalogenimonas formicexedens sp. nov. is proposed. The type strain is NSZ-14T (=HAMBI 3672T=JCM 19277T=VKM B-3058T). An emended description of Dehalogenimonas alkenigignens is also provided.
[Mh] Termos MeSH primário: Chloroflexi/classificação
Água Subterrânea/microbiologia
Filogenia
[Mh] Termos MeSH secundário: Alcanos
Técnicas de Tipagem Bacteriana
Composição de Bases
Chloroflexi/genética
Chloroflexi/isolamento & purificação
DNA Bacteriano/genética
Etano/análogos & derivados
Dicloretos de Etileno
Ácidos Graxos/química
Halogenação
Hidrocarbonetos Clorados
Louisiana
Propano/análogos & derivados
RNA Ribossômico 16S/genética
Análise de Sequência de DNA
Tricloroetanos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Alkanes); 0 (DNA, Bacterial); 0 (Ethylene Dichlorides); 0 (Fatty Acids); 0 (Hydrocarbons, Chlorinated); 0 (RNA, Ribosomal, 16S); 0 (Trichloroethanes); 113C650IR1 (1,1,1-trichloroethane); 1L6BI049XV (1,1,2,2-tetrachloroethane); 28E9ERN9WU (1,1,2-trichloroethane); 31UK5E8W7C (tetrachloroethane); 3MJ7QCK0Z0 (1,2,3-trichloropropane); 55163IJI47 (ethylene dichloride); L99N5N533T (Ethane); RRZ023OFWL (propylene dichloride); T75W9911L6 (Propane)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170128
[St] Status:MEDLINE
[do] DOI:10.1099/ijsem.0.001819



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