نتایج جستجو برای: cation exchange capacity

تعداد نتایج: 507586  

Journal: :تحقیقات آب و خاک ایران 0
لیلا اسماعیل نژاد دانشجوی دکتری گروه علوم خاک دانشگاه تهران جواد سیدمحمدی دانشجوی دکتری، گروه علوم خاک دانشگاه تبریز محمود شعبانپور دانشیار گروه علوم خاک دانشگاه گیلان حسن رمضان پور دانشیار، گروه علوم خاک دانشگاه گیلان

cation exchange capacity and specific surface area are among some of the important soil characteristics the direct measurement of which is laborious, costly and time consuming. therefore, fractal dimension of particle size distribution has been widely studied in relation with many such dynamic and static processes as transmission of water and solutes, water holding capacity, heat storage and co...

افیونی, مجید , نوربخش, فرشید ,

Field capacity (FC) and permanent wilting point (PWP) are important factors affecting irrigation scheduling and field management. FC and PWP can be estimated from some of the soil physical and chemical properties. Pressure Plate apparatus is usually used for determination of FC and PWP, but this is a time-consuming and laborious procedure besides, the apparatus may not be available in many labo...

ژورنال: علوم آب و خاک 2000
افیونی, مجید , نوربخش, فرشید ,

Field capacity (FC) and permanent wilting point (PWP) are important factors affecting irrigation scheduling and field management. FC and PWP can be estimated from some of the soil physical and chemical properties. Pressure Plate apparatus is usually used for determination of FC and PWP, but this is a time-consuming and laborious procedure besides, the apparatus may not be available in many labo...

Journal: :iranian journal of science and technology (sciences) 2008
v. m. ngole

soil productivity is generally associated with poor nutrient status and the physical condition of the soil, but the effect of soil mineralogy on soil productivity has received little attention. in this qualitative study, interactions between mineralogy and physico-chemistry and their role on the productivity of two luvisols, an arenosol and a vertisol are investigated. minerals identified in th...

Journal: :آب و خاک 0
معماریان فرد معماریان فرد بیگی هرچگانی بیگی هرچگانی

abstract cation exchange capacity (cec) is an important characteristic of soil in terms of nutrient and water holding capacities and contamination management. measurement of cec is laborious and time-consuming. therefore, cec estimation through other easily - measured properties is desirable. in this study, ptfs for estimation of cation exchange capacity from basic soil properties such as parti...

Journal: :iranian journal of oil and gas science and technology 0
masoumeh bashiri abadan faculty of petroleum engineering, petroleum university of technology, abadan, iran mosayyeb kamari reservoir evaluation department, national iranian south oil company (nisoc), ahvaz, iran ghassem zargar assistant professor, department of petroleum exploration engineering, petroleum university of technology, abadan, iran

water saturation and cation exchange capacity are the most significant parameters used to calculate a hydrocarbon zone potential. in clean formations, by applying the famous archie model, which assumes that in the formation the only electric conductor is the formation water, the water saturation can be calculated. additionally, in shaly sand formations this assumption may not be true as the ion...

Water saturation and cation exchange capacity are the most significant parameters used to calculate a hydrocarbon zone potential. In clean formations, by applying the famous Archie model, which assumes that in the formation the only electric conductor is the formation water, the water saturation can be calculated. Additionally, in shaly sand formations this assumption may not be true as the ion...

Journal: Desert 2019
F. Sarmadian M. Navidi S.A.R. Seyed Jalali Z. Mohammad Esmaiel

Cation exchange capacity (CEC) is one of the most important soil attributes which control some basic properties of soil such as acidity, water and nutrient retaining capacity. However, the measurement of cation exchange capacity in large areas is time consuming and requires high expenses. One way to save time and expenses is to use simple soil covariates and geostatistical methods in mapping CE...

ژورنال: علوم آب و خاک 2015
اسکندری, ذبیح‌الله, بحرینی‌نژاد, بابک, جعفری‌اردکانی, علی, پارسادوست, فرزاد,

Evaluation of chemical and biological indicators of soil in different land uses could be helpful in sustainable range management, preventing degradation of soil quality trend. This study was conducted in Friedan in Isfahan province in 2010 to compare chemical and biological indicators in three land uses (rangeland, degraded dry land and dry land), during two growing seasons (May and September) ...

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