نتایج جستجو برای: methocel k100m cr

تعداد نتایج: 45805  

ژورنال: :مجله دانشگاه علوم پزشکی ایلام 0
مسعود فریدونی masoud fereidoni department of biology, faculty of sciences, ferdowsi university of mashhad, mashhad, iranاستان خراسان رضوی، مشهد، دانشگاه فردوسی مشهد، دانشکده ی علوم، گروه زیست شناسی سیما جهان بخشی sima jahanbakhshi department of biology, faculty of sciences, ferdowsi university of mashhad, mashhad, iranاستان خراسان رضوی، مشهد، دانشگاه فردوسی مشهد، دانشکده ی علوم، گروه زیست شناسی

مقدمه: پیری یکی از مهم ترین ریسک فاکتور ها برای بسیاری از بیماری ها است، به طوری که یکی از اهداف مهم در تحقیقات مربوط به آن، شناسایی و تجزیه و تحلیل کردن اجزایی است که در به تاخیر انداختن پیری و افزایش طول عمر نقش دارند. در جوندگان، کاهش دسترسی به مواد غذایی(caloric restriction یا cr) به نحوی که باعث سوء تغذیه نشود، باعث افزایش 50 درصد در طول عمر می گردد، با این وجود اثرات مضر نیز از خود به جا ...

Journal: :Environmental science and pollution research international 2016
Joanna Augustynowicz Zbigniew Gajewski Anna Kostecka-Gugała Paweł Wróbel Anna Kołton

The aims of this study were both the qualitative and quantitative analysis of chromium accumulation in the shoots of Callitriche cophocarpa. This globally distributed, submersed macrophyte exhibits outstanding Cr phytoremediation capacity in an aquatic environment. Cr was applied separately for 7 days at two stable forms as Cr(VI) and Cr(III), known from their diverse physicochemical properties...

Journal: :Journal of the International Society of Sports Nutrition 2008
Ralf Jäger Jan Metzger Karin Lautmann Vladimir Shushakov Martin Purpura Kurt-Reiner Geiss Norbert Maassen

BACKGROUND A double-blind, placebo-controlled, randomized study was performed to evaluate the effect of oral creatine pyruvate (Cr-Pyr) and creatine citrate (Cr-Cit) supplementation on exercise performance in healthy young athletes. METHODS Performance during intermittent handgrip exercise of maximal intensity was evaluated before (pretest) and after (posttest) 28 days of Cr-Pyr (5 g/d, n = 1...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ولی عصر (عج) - رفسنجان - دانشکده ادبیات و علوم انسانی 1393

the present study investigated construct equivalence of multiple choice (mc) and constructed response (cr) item types across stem and content equivalent mc and cr items (item type ‘a’), non-stem-equivalent but content equivalent mc and cr items (item type ‘b’), and non-stem and non-content equivalent mc and cr items (item type ‘c’). one hundred seventy english-major undergraduates completed mc ...

2014
Zachary DeLoughery Michal W. Luczak Anatoly Zhitkovich

Cr(VI) genotoxicity is caused by products of its reductive metabolism inside the cells. Reactive oxygen species (ROS) and Cr(V,IV) intermediates are potential sources of oxidative damage by Cr(VI). Here, we investigated seven fluorescent probes for the detection of ROS and non-ROS oxidants in Cr(VI) reactions with its main reducers. We found that Cr(V)-skipping metabolism of Cr(VI) by ascorbate...

2013
Anil C. Somenahally Jennifer J. Mosher Tong Yuan Mircea Podar Tommy J. Phelps Steven D. Brown Zamin K. Yang Terry C. Hazen Adam P. Arkin Anthony V. Palumbo Joy D. Van Nostrand Jizhong Zhou Dwayne A. Elias

Microbial reduction of toxic hexavalent chromium (Cr(VI)) in-situ is a plausible bioremediation strategy in electron-acceptor limited environments. However, higher [Cr(VI)] may impose stress on syntrophic communities and impact community structure and function. The study objectives were to understand the impacts of Cr(VI) concentrations on community structure and on the Cr(VI)-reduction potenti...

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...

2015
Esther S. Posner Richard Hervig

The Mn–Cr decay system, in which Mn decays to Cr (t1/2 = 3.7 Ma) has been widely used to construct Cr/Cr vs. Mn/Cr isochrons and thus determine relative ages of early solar system objects or events, assuming that the initial Cr isotopic ratio, (Cr/Cr)o, equals ( Mn/Cr)o. With the primary objective of interpretation of these ages within a diffusion kinetic framework, we have determined the trace...

Journal: :Journal of animal science 2002
J L G van de Ligt M D Lindemann R J Harmon H J Monegue G L Cromwell

A total of 60 pigs from 15 litters were used during two experiments to assess the effects of maternal supplementation of Cr tripicolinate on performance and immune status of the offspring during the first 42 d after weaning. Gilts were raised on diets with either 0 (-Cr) or 200 (+Cr) ppb supplemental Cr from Cr tripicolinate. Their offspring were weaned at about 23 d of age. Pigs from dams fed ...

Journal: :Dalton transactions 2016
Chen Dong Genhua Wu Zhuqing Wang Wenzhi Ren Yujie Zhang Zheyu Shen Tianhua Li Aiguo Wu

A colorimetric assay is proposed for the selective detection of Cr(iii) and Cr(vi) via the aggregation-induced color change of gallic acid capped gold nanoparticles (GA-AuNPs). The AuNPs are characterized using UV-vis spectroscopy, transmission electron microscopy (TEM), dynamic light scattering (DLS) and Fourier-transform infrared spectrometry (FT-IR). To detect Cr(iii) and Cr(vi) coexisting i...

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