نتایج جستجو برای: including class area ca

تعداد نتایج: 1931941  

Journal: Desert 2017
M. Ownagh S.A. Arami

About 80 percent of Iran is arid and semi-arid and about 35 percent of this area is susceptible to desertification hazard. Therefore desertification assessment and identification of the most important criteria for the assessment of risk and a basis for development of management plans is essential. This research was conducted in the semi-arid region of Agh-Band in the Golestan province, Iran wit...

2014
Victoria Bevilacqua David Colantonio Ashley Cohen Caitlin Wilkinson Yunqi Chen Megan Smith Olivia Virag

As part of CALIPER program, a national research initiative aimed at closing the gaps in pediatric reference intervals, I sought to develop a database of covariate-stratified reference intervals in children for 11 circulating tumor markers in accordance with CLSI C28-A3 guidelines. Healthy children from birth to 18 years were recruited to participate in CALIPER and serum samples from 400-700 sub...

Journal: :The American journal of physiology 1998
T L Herring I M Slotin J M Baltz C E Morris

Neurons are mechanically robust. During prolonged swelling, molluscan neurons can triple their apparent membrane area. They gain surface area and capacitance independent of extracellular Ca concentration ([Ca]e), but it is unknown if an increase in intracellular Ca concentration ([Ca]i) is necessary. If Ca for stimulating exocytosis is unnecessary, it is possible that swelling-induced membrane ...

Journal: Nanochemistry Research 2018

The present study reports the synthesis of N-doped TiO2 photocatalyst for the degradation of caffeine using mechanochemical grinding method from the mixture of titania/urea followed by calcination at 400 ⁰C. The phase composition, particle size, surface area, morphology and optical properties...

Journal: :desert 0
gh.r. zehtabian professor, faculty of natural resources, university of tehran, karaj, iran h. mohammad asgari assistant professor, khoramshahr university of marine science and technology, khoramshahr, iran m. tahmoures ph.d. student, faculty of natural resources, university of tehran, karaj, iran

our main objective in the present study was to assess the spatial variation of chemical and physical water properties. prior to the design of groundwater quality monitoring networks, it is essential to investigate the spatial structure of the groundwater quality variables. a case study is presented which used ground water quality observations from groundwater domestic wells in the dameghan, ira...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1388

this research was conducted in two protect and destroy region in the middle zagros, in illam province. in order to identification of ecological species group and evaluate density of regeneration, effect of many factors such as protection, vegetation, physiographic factors, physical and chemical properties of soil in study locations were studied. to achieve these purpose number of 54 plots using...

Journal: :journal of herbal drugs (an international journal on medicinal herbs) 2011
hamzeh ali shirmardi asghar shahrokhi hossain mohammadi najaf-abadi mahmood talebi

background & aim: the present study was to identify the medicinal plant species and introduced as one of the key priority areas for conservation and determination of endangered species were done. experimental: the method of plant collection in this region was classical method of regional plant taxonomic studies. collected plants were recognized and determined families, genera and species o...

Journal: :محیط زیست طبیعی 0
آسیه صادقی دانش آموخته کارشناسی ارشد محیط زیست، دانشگاه تهران، دانشکده منابع طبیعی، ایران نعمت ا... خراسانی استاد دانشگاه تهران، دانشکده منابع طبیعی، ایران افشین دانه کار دانشیار دانشگاه تهران، دانشکده منابع طبیعی، ایران طاهره اردکانی مربی دانشگاه یزد، مرکز آموزش عالی اردکان، ایران

increasing the usage of electricity power illustrates its growing proportion and effective role in the energy economy. it also depicts the connection between using the electricity power and economic development. regarding the strategic role of power plants in the economic and social development, the absence of the environmental considerations in all phases, including site selection, planning, p...

خاندوزی, فهیمه, دادبان شهامت, یوسف, زمانی, عباسعلی, پری زنگنه, عبدالحسین,

Background and Purpose: Investigation of water quality is an important step for the suitable use of water resources in order to drinking and irrigation. Water quality affects agriculture programming.  Hence the need of the study of water quality is strongly considered in the water resources management. Material and Methods: In this study Hydro-geochemical quality of ground water resou...

Journal: :Applied and environmental microbiology 1984
S R Thom R E Marquis

Studies of the growth-modifying actions for Escherichia coli, Saccharomyces cerevisiae, and Tetrahymena thermophila of helium, nitrogen, argon, krypton, xenon, and nitrous oxide led to the conclusion that there are two definable classes of gases. Class 1 gases, including He, N(2), and Ar, are not growth inhibitors; in fact, they can reverse the growth inhibitory action of hydrostatic pressures....

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