نتایج جستجو برای: hch صنعتی
تعداد نتایج: 23079 فیلتر نتایج به سال:
The current study evaluated certain emerging contaminants in the Susurluk sub-basin, which is under significant anthropogenic pollution pressure. Polychlorinated Biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), organochlorine insecticides, and microplastics were investigated from both surface sediment samples collected dry wet seasons. In Kocaçay river reaching Marmara Sea, γ-HCH β-HCH...
Papers and published reports investigating the presence of pesticides in rainfall in Europe were reviewed. Approximately half of the compounds that were analysed for were detected. For those detected, most concentrations were below about 100 ng/l, but larger concentrations, up to a few thousand nanograms per litre, were detected occasionally at most monitoring sites. The most frequently detecte...
The present study is undertaken to predict the three dimensional structure of γ-Hexachlorocyclohexane dehydrochlorinase (linA) in Sphingomonas paucimobilis UT26. γ-Hexachlorocyclohexane dehydrochlorinase (linA) catalyzes the initial steps in the biotransformation of the important insecticide γhexachlorocyclohexane (γ-HCH) by the soil bacterium Sphingomonas paucimobilisUT26. Stereo chemical anal...
در این تحقیق تأثیر کاربری های اطراف رودخانۀ سیاهرود قائم شهر روی غلظت باقیماندۀ آفت کش ها در آب و رسوب بررسی شد. 11 سم ارگانوکلره (2,4'-ddd، 2,4'-dde، 2,4'-ddt، 4,4'-ddd، 4,4'-dde، 4,4'-ddt، aldrine، deldrin، α-hch، β-hch و γ-hch) و 3 سم ارگانوفسفره (chlorpyrifos، diazinon و edifenphos) در آب و رسوب رودخانۀ سیاهرود قائم شهر در 7 ایستگاه (7 کاربری) و در سه فصل تابستان (فصل پرمصرف) بهار (فصل خشک ...
Pesticides play an important role in agriculture to control or eliminate weeds, pests, insects and plant disease. Due their wide usage past years, pesticides are known as environmental pollutants. They can contaminate water, soil, biota air. The objective of this study is determine the occurrence distribution Hexachlorohexanes (HCH) isomers soil samples. HCH measured samples collected from nine...
Abstract. Persistent organic pollutants (POPs) are synthetic compounds that were intentionally produced in large quantities and have been distributed the global environment, originating a threat due to their persistence, bioaccumulative potential, toxicity. POPs reach Antarctic continent through long-range atmospheric transport (LRAT). In these areas, low temperatures play significant role envi...
Organochlorine insecticide hexachlorocyclohexane (HCH) has recently been classified as a 'Persistent Organic pollutant' by the Stockholm Convention. The LinB haloalkane dehalogenase is a key upstream enzyme in the recently evolved Lin pathway for the catabolism of HCH in bacteria. Here we report a sequence-structure-function analysis of ten naturally occurring and thirteen synthetic mutants of ...
Organochlorine pesticides (OCPs), viz. β-hexachlorocyclohexane (β-HCH), γ-HCH, aldrin, dieldrin, endrin, heptachlor, endosulfan-I, endosulfan-II, heptachlor endoepoxide, heptachlor exoepoxide, mirex, dicofol, o,p'-dichlorodiphenyltrichloroethane (o,p'-DDT), p,p'-dichlorodiphenyltrichloroethane (p,p'-DDT), dichlorodiphenyldichloroethane (DDD), and dichlorodiphenyltrichloroethylene (DDE) and 12 o...
INTRODUCTION Prenatal exposure to some pesticides can adversely affect male reproductive health in animals. We investigated a possible human association between maternal exposure to 27 organochlorine compounds used as pesticides and cryptorchidism among male children. DESIGN Within a prospective birth cohort, we performed a case-control study; 62 milk samples from mothers of cryptorchid boys ...
Aim. To determine one traditional Chinese medicine (TCM) Nao-Xue-Shu oral liquid which protects and improves secondary brain insults (SBI) in hypertensive cerebral hemorrhage (HCH). Methods. 158 patients with HCH were divided into routine clinical medicine plus Nao-Xue-Shu oral liquid (n = 78) as treatment group, and routine clinical medicine (n = 80) only served as the control group. The incid...
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