نتایج جستجو برای: soils of iran

تعداد نتایج: 21176097  

Journal: :مدیریت خاک و تولید پایدار 0
هادی واثقی دانشجوی کارشناسی ارشد کریم شهبازی موسسه تحقیقات خاک و آّب علی خانمیرزایی دانشگاه آزاد کرج

metals sorption on solid phase from solution is one of the most important chemical processes controlling their bioavailability in soils. nickel (ni) sorption characteristics in 20 calcareous soils of iran were investigated in a range from 5.87 to 751.23 mgl-1 ni concentration in solution using sorption isotherms. ni sorption isotherm exhibited strong nonlinear behavior for all soils. the result...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده هنر 1389

چکیده اهمیت اشیاء در نگاه انسان از آغاز پیدایش در زندگی جریان داشته و تاکنون نیز ادامه دارد. ساخت اشیاء از انواع کاربردی و آئینی آغاز و تا انواع الکترونیکی آن به همزیستی مسالمت آمیزی با انسان منتهی گشته است. حال اینکه این همزیستی در هر دوره ای از تاریخ چگونه خودنمایی می کند از اهمیت بسیاری برخوردار است.این رساله به بررسی موقعیت شی از جنبه های زیبایی شناسی، هویت مداری، نمادگرایی، جامعه شناسی ...

ژورنال: علوم آب و خاک 2012
حسن رمضان‌پور, , مهدی نوروزی , ,

Flooding and fire are important phevent which could impact the forests of north of Iran periodically. These phenomena could have undesirable effects on properties and quality of soil. This study was conducted in order to investigative the effects of flooding and fire on some soil properties in Lakan forest, Guilan province. Soil sampling was carried out on three replicates from three depths 0-3...

Abstract: The present work is conducted to investigate the effect of texture and carbonate content on internal friction angle of carbonate soils. Carbonate soils are majorly found in the bed of shallow waters and also offshores in tropical regions. Recently there is a huge construction projects including oil and gas extraction platform and facilities, harbors, refineries, huge bridges and ot...

2016
Maryam Ozlati Adel Spotin Abbas Shahbazi Mahmoud Mahami-Oskouei Teimour Hazratian Mohammad Adibpor Ehsan Ahmadpour Afsaneh Dolatkhah Paria Khoshakhlagh

ABSTRACT Aim: One of the main diagnostic problems of conventional polymerase chain reaction (PCR) is indiscrimination of low parasitic loads in soil samples. The aim of this study is to determine the genetic diversity and identification of Toxocara spp. from public areas soil inferred by loop-mediated isothermal amplification (LAMP) assay. MATERIALS AND METHODS A total of 180 soil samples wer...

Journal: :iran agricultural research 2008
r. moazen zadeh b. ghahraman

the majority of hydraulic processes under a natural condition in a field are carried out under unsaturated flow conditions. the soil moisture retention curve (smrc) is the most important hydraulic characteristic of an unsaturated soil whose knowledge is of prime importance in soil-water studies such as soil conservation, soil erosion, land evaluation, soil reclamation, and water resources manag...

Journal: :پژوهش های خاک 0
جلیـل کاکه دانش آموخته کارشناسی ارشد گروه مهندسی علوم خاک دانشگاه تهران علی اصغر ذوالفقاری استادیار گروه مناطق خشک دانشکده کویر شناسی دانشگاه سمنان منوچهر گرجی دانشیار گروه مهندسی علوم خاک- پردیس کشاورزی و منابع طبیعی دانشگاه تهران

soil particle-size distribution (psd) is one of the most important physical attributes due to its great influence on soil physical, chemical, and biological properties. water infiltration rate, land-use change, soil erosion, and biological soil crusts (bscs) may influence psd in a soil. the multifractal measures were useful tools in characterization of psd in soils. the objective of the current...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - پژوهشکده ادبیات 1393

1.0 overview it seems that grammar plays a crucial role in the area of second and foreign language learning and widely has been acknowledged in grammar research. in other words, teaching grammar is an issue which has attracted much attention to itself, and a lot of teachers argue about the existence of grammar in language teaching and learning. this issue will remind us a famous sentence f...

سلگی, عیسی, یاراحمدی, فائزه,

  Background and Aim : Contamination of the surface soils of the urban ecosystem with heavy metals poses potential ecological risks. In this research, a preliminary investigation was carried out to evaluate the potential ecological risk of cadmium and lead contamination in urban park soils in Assadabed City, Iran.   Materials and Methods : Soil samples were taken from the urban parks of Asad...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید