نتایج جستجو برای: including benzene
تعداد نتایج: 991227 فیلتر نتایج به سال:
The structural study of the non-covalent interactions in ternary mixture benzylamine (BA), ethanol and benzene has been attempted through Density Functional Theory (DFT) calculation. optimized structure monomers (BA, benzene), BA dimer their complexes (BA-benzene, BA-ethanol, BA-ethanol-benzene) interaction energies are used to describe intermolecular interaction. In addition conventional H-bon...
Background and purpose: Hospital wastes pose a serious public health problem. This is primarily caused by the way individual components of the waste is handled. One acceptable method for managing the medical waste is incineration but uncontrolled incinerators can cause emission of pollutants to atmosphere. The objective of this study was to evaluate pollutants emission from hospital waste ...
BACKGROUND Cancer is the second leading cause of death among U.S. children with few known risk factors. There is increasing interest in the role of air pollutants, including benzene and 1,3-butadiene, in the etiology of childhood cancers. OBJECTIVE Our goal was to assess whether census tracts with the highest benzene or 1,3-butadiene ambient air levels have increased childhood lymphohematopoi...
The presence of benzene, toluene, ethylbenzene, and xylene compounds (BTEX) in the breathing air outside inside buildings is one most significant problems related to human health today. This study was performed determine concentration BTEX pollutants indoor environments. PhoCheck used detect compounds. In this study, (BTEX pollutant) assessed four spaces, including restaurants, laundries, hair ...
Since the discovery of acetylene and benzene in protoplanetary nebulae under powerful ultraviolet ionizing radiation, efforts have been made to investigate the polymerization of ionized acetylene. Here we report the efficient formation of benzene ions within gas-phase ionized acetylene clusters (C2H2)n+ with n = 3-60. The results from experiments, which use mass-selected ion mobility techniques...
Anaerobic benzene oxidation coupled to the reduction of Fe(III) was studied in Ferroglobus placidus in order to learn more about how such a stable molecule could be metabolized under strict anaerobic conditions. F. placidus conserved energy to support growth at 85°C in a medium with benzene provided as the sole electron donor and Fe(III) as the sole electron acceptor. The stoichiometry of benze...
Sediments from the sulfate-reduction zone of a petroleum-contaminated aquifer, in which benzene persisted, were inoculated with a benzene-oxidizing, sulfate-reducing enrichment from aquatic sediments. Benzene was degraded, with apparent growth of the benzene-degrading population over time. These results suggest that the lack of benzene degradation in the sulfate-reduction zones of some aquifers...
Benzene is a widespread and toxic contaminant. The fate of benzene in contaminated aquifers seems to be primarily controlled by the abundance of oxygen: benzene is aerobically degraded at high rates by ubiquitous microorganisms, and the oxygen-dependent pathways for its breakdown were elucidated more than 50 years ago. In contrast, benzene was thought to be persistent under anoxic conditions un...
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