نتایج جستجو برای: h2o2
تعداد نتایج: 14231 فیلتر نتایج به سال:
the trend of sustainable use of available water resources encourages textile finishing enterprisesto implement efficient wastewater treatment technologies that enable water recycling, and not just it’sdischarging into the local wastewater treatment plants (wwtp). this paper presents the results obtainedfrom the h2o2/uv treatment of wastewater from slovene textile finishing company. laboratory s...
چکیده زمینه و هدف: ترکیبات pcb از جمله آلاینده های خطرناک شغلی و محیطی هستند که چالش های شغلی و زیست محیطی عمده ای را ایجاد نموده اند. این ترکیبات بسته به راه ورود، سن، جنس، غلظت و سطح مواجهه سبب انواع مختلف اثرات بهداشتی می شوند. هدف از این مطالعه تجزیه ی روغن های آسکارل با استفاده از فرآیند فوتولیز به منظور کاهش مواجهه ی کارگران بود. روش بررسی: راکتور فوتوشیمیایی مبتنی بر فرآیند فوتولیز با رو...
چکیده زمینه و هدف: نیکل یکی از آلایندههای مهم ناشی از صنایع مختلف مانند آبکاری و باطری سازی میباشد که حضور آن در محیط زیست مخاطره انگیز است. مطالعه حاضر بر روی حذف نیکل با استفاده از روش اکسیداسیون پیشرفته در حضور نانو ذرات زیرکونیا، سیلیکا و پر اکسید هیدروژن از محلولهای مایی متمرکز میباشد. مواد و روش کار: پس از ساخت پایلوت، کارایی فرایندهای UV/H2O2/ZrO2 و UV/H2O2/SiO2 در حذف نیکل مورد بررس...
objective: ferula szowitsiana has been widely used for medicinal purposes around the world. the anti-oxidant effect of f.szowitsiana had been proved. the current study aims to determine the protective effects of galbanic acid, a sesquiterpene coumarin from f. szowitsiana, against hydrogen peroxide (h2o2) - induced oxidative dna damage in human lymphocytes. materials and methods: human lymphocyt...
objective: it is well-known that all living cells emit ultra-weak photon emission (upe), which is due to byproducts of chemical reactions in cell metabolisms. it has been shown that reactive oxygen species (ros) in the cells enhances the upe intensity. the magnitude of such upe is extremely weak (i.e. a few to 103 photons/ (sec.cm2)), and the detection of such ultra-weak signals is hardly possi...
[1] We report new century-scale ice core records of hydrogen peroxide (H2O2), a major atmospheric oxidant, from 23 locations across the West Antarctic Ice Sheet (WAIS) and use the spatial variability of (multi-) annual mean H2O2 concentrations in snow and firn to investigate the sensitivity of ice core H2O2 preservation to mean annual temperature and accumulation rate. In agreement with the ice...
Biological production and decay of the reactive oxygen species (ROS) hydrogen peroxide (H2O2) and superoxide (O[Formula: see text]) likely have significant effects on the cycling of trace metals and carbon in marine systems. In this study, extracellular production rates of H2O2 and O[Formula: see text] were determined for five species of marine diatoms in the presence and absence of light. Prod...
Background and purpose: Cyanide (CN-) is of dangerous pollutants in the environment from industries such as electroplating, mining and paint entering into environment. The present study aimed to review the efficiency of cyanide removal by zirconia photocatalytic process with and without hydrogen peroxide (H2O2). Materials and methods: This was an applied-fundamental study and was conducted in ...
Naoxintong (NXT) is an empirical formula based on the principle of traditional Chinese medicine, which has been approved by China Food and Drug Administration (CFDA) and is widely used for treatment of patients with cerebrovascular and cardiovascular diseases in China. The aim of this study is to investigate the protective mechanism of NXT on H9c2 cells (cardiogenic cell line) in response to H2...
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