نتایج جستجو برای: کوم vi

تعداد نتایج: 43097  

Journal: :infection, epidemiology and medicine 0
fatemeh fallah full professor, department of clinical microbiology, school of medicine, shahid beheshti university of medical sciences, tehran, ir iran. hossein godarzi full professor ,department of clinical microbiology, school of medicine, shahid beheshti university of medical science, tehran, ir iran. fariba lahoorpour department of pathology and medical laboratory sciences, faculty of para medicine, kurdistan university of medical sciences, sanandaj, iran mojgan bandehpour cellular and molecular biology research center, shahid beheshti university of medical sciences, tehran, ir iran saeed soleiman–jahi cancer research center, cancer institute of iran, tehran university of medical science, tehran, ir iran latif gachkar infectious diseases and tropical medicine research center, shahid beheshti university of medical sciences, tehran, ir iran.

background: salmonella enterica serovar typhi (s. typhi) the cause of the acute febrile disease typhoid fever is the major public health problem in developing countries. asymptomatic carriers are the main sources of typhoid. the aim of this study was to investigate methods for isolation and identification of s. typhi in asymptomatic carriers. materials and methods: two hundred stool samples wer...

ژورنال: :فصلنامه علمی- پژوهشی آب و فاضلاب 2013
عباس رضایی هوشیار حسینی حسین معصوم بیگی رضا درویشی چشمه سلطانی

این تحقیق با هدف مطالعه حذف الکتروشیمیایی کروم (vi) از محلول آبی با استفاده از سیستم الکترودی دو قطبی طراحی و انجام شد. فرایند الکتروکواگولاسیون از جمله تکنولوژی هایی است که اخیراً مورد توجه بسیاری از محققان قرار گرفته است. این روش با توجه به مزایای آن از قبیل راندمان بالا، عدم نیاز به افزودن مواد شیمیایی، حجم کم لجن تولیدی، قابلیت کنترل فرایند در شرایط مورد نظر و سهولت بهره برداری و حفظ و نگهدا...

Journal: interface and thin films 2018

The adsorption ability of Dowex Optipore L493 resin modified with Aliquat 336 (MR), activated carbon modified with Aliquat 336 (MAC) and sawdust modified with Aliquat 336 (MS) for removal of Cr(VI) from aqueous solution in batch system was investigated. The effects of operational parameters such as adsorbent dosage, initial concentration of Cr(VI) ions, pH, temperature and contact time were stu...

تقوی, دکتر کامران , مصداقی نیا, دکتر علیرضا ,

ABSTRACT In this research which was performed with bench Scale, Adsorption of Cr(VI) from Industrial wastewater was studied & biological method of Activated sludge batch flow reactors utilized. This study indicated that Cr(VI) at first adsorped with cell walls of bacteria & then after Sedimentation it was intered to sludge & finally was removed from effluent. In this study Cr (VI) adsorption ...

Journal: :jundishapur journal of health sciences 0
amirreza talaiekhozani department of civil engineering, jami institute of technology, isfahan, ir iran; department of civil engineering, jami institute of technology, isfahan, ir iran. tel: +98-3152636319 marzieh bagheri department of chemical engineering, jami institute of technology, isfahan, ir iran mohammad reza talaei department of chemical engineering, faculty of engineering, university of isfahan, isfahan, ir iran nematollah jaafarzadeh environmental technologies research center, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

conclusions to solve the above mentioned difficulties, fundamental study most be carried out to discover the novel methods of ferrate(vi) production, focusing on increasing the product stability and the production yield. results despite the existence of these technologies, there is no full-scale application of ferrate(vi) in the water and wastewater industry which it is due to difficulties asso...

Journal: :journal of research in health sciences 0
ghorban asgari ali reza rahmani javad faradmal abdol motaleb seid mohammadi

background : hexavalent chromium ( cr (vi)) is an important contaminant in surface and groundwater and its removal from contaminated water and wastewater has received interest in recent years. this study aimed to explain the removal process of cr (vi) from aqueous solution using nano hydroxyapatite (n-hap) as an adsorbent material. methods: cr (vi) removal experiments with the prepared n-hap we...

بهزاد حضی زاده رویا رنجینه خجسته, مجتبی جعفرزاده

دو کمپلکس جدید دی اکسومولیبدن (VI) از واکنش بیس استیل استوناتو دی اکسو مولیبدن(VI) با لیگاند 1،8-نفتالن دی آمین و1،5-نفتالن دی آمین در حلال متانول به دست آمده است. از واکنش بیس استیل استوناتودی اکسومولیبدن [VI)MoO2(acac)2] I)  با 1،8-نفتالن دی آمین MoO2(C10H6(NH)2)2](CH3)2 II] با بازده 83 % به دست آمده است که گروه‌های نفتالن دی آمین به صورت سیس به مولیبدن (VI) متصل شده و ساختار شبه هشت وجهی کمپ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1389

چکیده: آلودگی کروم در خاک و آب های زیرزمینی به عنوان یک مشکل جدی زیست محیطی محسوب می شود. دو حالت اکسایشی پایدار کروم (iii و vi) در طبیعت یافت می شوند. کروم شش ظرفیتی (cr(vi)) کاملاً محلول و متحرک بوده و به دلیل داشتن خواص اکسید کنندگی قوی، اثرات سمّی در سیستم های زیستی دارد در حالیکه کروم سه ظرفیتی (cr(iii)) به دلیل شرکت در سوخت و ساز گلوکز، چربی و پروتئین، به عنوان یک عنصر ضروری برای حیوانات ش...

Amir Azizi, Javad Saien,

Background & Aims of the Study: Chromium is widely detected in surface waters and underground waters, which usually appear as Cr(VI), and Cr(III), at sites associated with industrial activities. Cr(VI), in effluent streams with a high level of mobility and notorious mutagenic and carcinogenic toxicity; thus Cr(III) does not have much mobility in soil. So, converting it into less h...

2008
E. M. Keen

Cosine Numeric Abstract, Cosine Logical Abstract, Overlap Logical Overlap Logical Abstract, Cosine Numeric Cosine Numeric Text, Cosine Numeric Text, Cosine Logical Text, Overlap Logical Abstract, Cosine Numeric Cosine Numeric Abstract, Cosine Logical Cosine Logical Title, Cosine Numeric EVALUATION MEASURE Normed. Recall Normed. Precision Normed. Recall Normed. Precision Normed. Recall Normed. P...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید