نتایج جستجو برای: degradation rate

تعداد نتایج: 1094639  

Journal: :پژوهش های علوم دامی ایران 0
مهدی مقدم اکبر تقی زاده علی نوبخت احمد احمدی

the present study was carried out to determine the nutritive value of white varieties of grape pomace (gp) and raisin vitis leaves (rvl), using nylon bags and gas production techniques. tow fistulated whether with average body weight of 45±2 kg were used. the amount of gas produced was measured at 2, 4, 6, 8, 12, 16, 24, 36, 48 and 72 h times and degradation was measured using nylon bags up to ...

Journal: :international journal of environmental research 2010
h.m. rajashekara murthy m.s. thakur h.k. manonmani

hexachlorocyclohexane, an organochlorine insecticide has been used in agriculture and public health programmes since a very long time. it is very resistant to degradation and thus accumulates in the environment for long time. a microbial consortium was developed in our laboratory which could degrade hexachlorocyclohexane very efficiently in water. a study was carried out to understand the biode...

Journal: :journal of advances in environmental health research 0
zahra sharifi department of environmental health engineering, school of public health, hamadan university of medical sciences, hamadan, iran mohammad taghi samadi department of environmental health engineering, school of public health, hamadan university of medical sciences, hamadan, iran abdolmotaleb seid-mohammadi social determinants of health research center (sdhrc) and department of environmental health engineering, school of public health, hamadan university of medical sciences, hamadan, iran ghorban asgari social determinants of health research center (sdhrc) and department of environmental health engineering, school of public health, hamadan university of medical sciences, hamadan, iran

in this study, degradation of p-chlorophenol (p-cp) was evaluated using persulfate (ps) activated zerovalent iron (zvi) based ultraviolet (uv) in a bench scale photoreactor. the effect of operational parameters such as solution ph (3, 7, and 11), reaction time (0-60 minutes), zvi dosage (0.15, 1.25, 0.5, 1, and 1.5 mm), ps concentration (0.5, 1.5, 2, 2.5, 3, and 4 mm), and initial p-cp concentr...

Journal: :journal of rangeland science 2010
victor r. squires

the unccd has been ratified by over 190 countries. it is the attempt by nations, both rich and poor to control the scourge of desertification. the definition of which is “land degradation in arid, semiarid, and dry subhumid areas resulting from various factors, including climatic variations and human activities. it is now widely accepted that desertification is not the relentless advance of des...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1391

in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...

Journal: :تحقیقات نظام سلامت 0
عبدالمطلب صید محمدی عضو هیات علمی، گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی همدان، همدان، ایران. قربان عسگری عضو هیات علمی، گروه بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی همدان، همدان، ایرا افشین ابراهیمی استادیار، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. زهرا شریفی کارشناس بهداشت محیط، آزمایشگاه آب و فاضلاب، مرکز بهداشت همدان، همدان، ایران. حسین موحدیان عطار استاد، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

background: there are many varieties of compounds in chemical and petrochemical wastewater. one of the important members of the chlorophenols (cps) family is ρ-chlorophenol. this pollutant is introduced into the environment through various human activities such as waste incineration, uncontrolled use of wood preservatives, pesticides, fungicides and herbicides, as well as via bleaching the pulp...

Journal: :Proceedings of the National Academy of Sciences 2001

Journal: :Journal of Water, Sanitation and Hygiene for Development 2017

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید