نتایج جستجو برای: relative water content

تعداد نتایج: 1272024  

عسکری, مهری, امینی, فریبا, قنبر زاده, زهره ,

Fariba Amini*, Zohreh Ganbarzadeh and Mehri Askari * Department of Biology, Faculty of Sciences, Arak University, Arak 38156-8-8349, Iran (Received: 10 September 2012 Accepted: 4 May 2013) Abstract: Salinity is an environmental stress and is the main limiting factor in the efficiency of agriculture products in the world. Salsola arbuscula is a halophyte plant and resistant to ...

The pollution caused by the presence of heavy metals in the air, water and soil is one of the world's ecological problems. In this study, the effect of different concentrations of calcium on the absorption and accumulation of Cd and Zn in M. flavida from Brassicacea was studied. For this purpose, concentrations of 100, 400 and 1600 µM calcium and 1, 5 and 10 µM Cd and 10, 20 and 40 ...

2005
Ralph E. Milliken John F. Mustard

[1] Fundamental and overtone vibrational absorptions of H2O and OH observed in reflectance spectra in the 1.3–5.0 mm wavelength region may be used to estimate the absolute or relative amount of water in particulate materials. Laboratory reflectance spectra of five hydrated materials (sodium and magnesium montmorillonite, sulfate, zeolite, and palagonite) with initial water contents ranging from...

ژورنال: علوم آب و خاک 2013

Different root water uptake models have recently been used. In this article, we use evapotranspiration data and soil water content data obtained from lysimeter measurements and root distribution in soil data obtained from olive tree to evaluate the accuracy of root water uptake models in predicting the soil water content profiles. Depth of lysimeter was 120 cm which was filled with clay-loam. L...

Journal: :iranian journal of environmental sciences 0
seyyed mansour seyyednejad professor of plant physiology, department of biology, faculty of science, shahid chamran university of ahvaz, ahvaz, iran hossein motamedi professor of microbiololgy, department of biology, faculty of science, shahid chamran university of ahvaz, ahvaz, iran parinaz lordifard msc. student, department of biology, faculty of science, shahid chamran university of ahvaz, ahvaz, iran

environmental pollution consists of different types of pollutants in air, soil, and water. due to the fact that plants can respond to environmental pollution, they can be used as bio-indicators for environmental monitoring. air pollution in areas with oil and gas refineries nearby is an important problem. this study aims to survey the effects of gas refinery air pollutants on conocarpus erectus...

Journal: :Anais da Academia Brasileira de Ciencias 2013
Bruno H P Rosado Eduardo A De Mattos Leonel Da S L Sternberg

During plant-transpiration, water molecules having the lighter stable isotopes of oxygen and hydrogen evaporate and diffuse at a faster rate through the stomata than molecules having the heavier isotopes, which cause isotopic enrichment of leaf water. Although previous models have assumed that leaf water is well-mixed and isotopically uniform, non-uniform stomatal closure, promoting different e...

Journal: :Skin research and technology : official journal of International Society for Bioengineering and the Skin (ISBS) [and] International Society for Digital Imaging of Skin (ISDIS) [and] International Society for Skin Imaging 2010
Gorm Krogh Johnsen Anne Berit Haugsnes Orjan G Martinsen Sverre Grimnes

BACKGROUND/PURPOSE Water content is the most vital parameter governing the overall function of the epidermal stratum corneum (SC). Thus, knowledge of the in vivo absolute water content of the SC is of great interest. METHODS We have investigated a non-invasive method for the estimation of in vivo SC water content based on transepidermal water loss measurements combined with desorption studies...

Journal: :علوم باغبانی ایران 0
داریوش رمضان دانشجوی سابق دکتری فیزیولوژی و اصلاح سبزی، دانشکدۀ علوم کشاورزی، دانشگاه گیلان و استادیار، دانشکدۀ کشاورزی، دانشگاه زابل، ایران معظم حسن پور اصیل استاد، دانشکدۀ علوم کشاورزی، دانشگاه گیلان، ایران رضا صالحی استادیار، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران حسین دهقانی سانیچ دانشیار پژوهش، مؤسسۀ تحقیقات فنی و مهندسی کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

in this study, a landrace melon zarde jalali as the scion and commercial varieties of cucurbita rootstocks cv., shintozwa and ferro-rz was used as the rootstock. grafted plants upon commercial varieties of cucurbita with own-rooted and ungrafted at three irrigation levels of 60, 80 and 100% (respectively 4984.32, 6124.82 and 7239.41 m3ha-1) based on total available water depletion with drip irr...

Journal: :به زراعی کشاورزی 0
رویا کریمی دانشجوی سابق کارشناسی ارشد، گروه زراعت، دانشکده کشاورزی، دانشگاه اورمیه، ارومیه - ایران هاشم هادی استادیار گروه زراعت، دانشکده کشاورزی، دانشگاه اورمیه، ارومیه - ایران مهدی تاج بخش شیشوان استاد گروه زراعت، دانشکده کشاورزی، دانشگاه اورمیه، ارومیه - ایران

according to the global water shortage problem, the exploring for reducing its harmful effects is very important. this experiment was conducted as split plots method based on randomized complete block design with three replicates in urmia university research field during growing season of 2013-14. water deficit stress as main plot consisted of three levels (irrigation when soil moisture reached...

Journal: :The British journal of dermatology 1975
T S Spencer C E Linamen W A Akers H E Jones

The water content of human stratum corneum has been measured gravimetrically in vitro in relation to relative humidity (RH) and temperature. Water content increased with increasing RH. Stratum corneum water content increased 50% when the temperature was raised from 20 to 35 degrees C at RH below 60%. Temperature dependence decreased with increasing RH until there was essentially no temperature ...

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