نتایج جستجو برای: تابع k/s

تعداد نتایج: 30270  

Journal: :The Journal of antibiotics 1989
S Nakanishi K Ando I Kawamoto T Yasuzawa H Sano H Kase

Novel inhibitors of Ca2+ and calmodulin-dependent cyclic nucleotide phosphodiesterase were isolated from the culture broth of a fungus, Mollisia ventosa KAC-1148. They were designated as KS-504a, KS-504b and KS-504d. A degradative product of KS-504a, called KS-504e, was also isolated and found to inhibit the enzyme. The 50% inhibitory concentration (IC50) values of KS-504a, KS-504b, KS-504d and...

هدایت هیدرولیکی نزدیک اشباع (Ks) خاک از ویژگی‌های‌ کلیدی برای اهداف مختلف از جمله شبیه‌سازی فرایندهای هیدرولوژیکی، تعیین تابع هدایت هیدرولیکی غیراشباع خاک و مدل‌سازی جریان آب و انتقال املاح است. چون Ks یک ویژگی وابسته به ساختمان خاک است، برای به حداقل رساندن دست‌خوردگی حجم خاک نمونه‌برداری شده معمولا از روش‌های اندازه-گیری صحرایی استفاده می‌شود. به دلیل تغییرپذیری بالای مکانی- زمانی Ks، اندازه‌...

Journal: :علوم باغبانی ایران 0
کاظم ارزانی حسن خوش قلب

to evaluate growth characteristics and adaptation of new asian pear cultivars (pyrus serotina rehd.) in iran, some growth characteristics and physiological factors of nine asian pear cultivars named ‘ks’6, ‘ks’7, ‘ks’8, ‘ks’9, ‘ks’10, ‘ks’11, ‘ks’12, ‘ks’13, ‘ks’14 and one european, present commercial cultivar ‘shahmiveh’ of iran (control) were evaluated under the climatic conditions of tehran ...

ژورنال: علوم آب و خاک 2019

Saturated hydraulic conductivity (Ks) is one of the most important soil physical characteristics that plays a major role in the soil hydrological behaviour. It is mainly affected by the soil structure characteristics. Aggregate size distribution is a measure of soil structure formation that can affect Ks. In this study, variations of Ks were investigated in various aggregate size distributions ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده کشاورزی 1392

در این پژوهش، مدل eshpim5 برای برآورد پارامترهای هیدرولیکی [ضرایب معادله ون گنوختن(?،n)، رطوبت باقی مانده(?r)، رطوبت اشباع(?s) و هدایت هیدرولیکی اشباع(ks)] 8 سری خاک با استفاده از سطح ویژه هوا-مایع در اطراف ذرات خاک به روش معکوس ارائه شد. در این مدل مقادیر رطوبت و فشار آب خاک در لایه ها و زمانهای مختلف با استفاده از حل ضمنی معادله ریچاردز و به روش تفاضل محدود محاسبه گردید. در کرتی به ابعاد 2 در...

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
efat razeghi 1. assistant prossor in nephrology, kermanshah university of medical sciences. azar haddadi assistant professor in infectious diseases, kermanshah university of medical sciences.

introduction : recipients of renal transplants are susceptible to kaposi's sarcoma (ks) as a result of treatment with immunosuppressive drugs. ks is one of the most common post transplant malignancies. variety of factors appear to contribute to the development of ks including: genetic factors, sex hormones, immunosuppression and oncogenic viruses.this study present three cases of renal transpla...

A. KHOSHNOOD YAZDI B. GHAHRAMAN S. OMIDI

Measurement of soil saturated hydraulic conductivity, Ks, is normally affected by flow patterns such as macro pore; however, most current techniques do  not differentiate flow types, causing major problems in describing water and chemical flows within the soil matrix. This study compares eight models for scaling Ks and predicted matrix and macro pore Ks, using a database composed of 50 datasets...

2007
D. R Prince Williams Shamshad Husain

In this paper ,we fuzzify the new class of algebraic structure introduced by Kim[5].In this fuzzification(called fuzzy KS-semigroups),we introduce the notions of fuzzy sub KS-semigroups,fuzzy KS-ideal,fuzzy KS-p-ideal and investigate some of their related properties.The purpose of this study is to implement the fuzzy set theory and ideal theory in the KS-semigroups.This fuzzification leads to d...

Journal: :آب و خاک 0
علیزاده علیزاده نظری نظری لیاقت لیاقت

abstract determining saturated hydraulic conductivity (ks) is one of the important soil characteristics that its estimation is important in soil and water studies. there are several methods for estimating ks in unsaturated conditions. these methods include the inversed-auger-hole method, the double-ring infiltrometer and the single-ring pressure infiltrometer. the measurement of ks by these met...

Journal: :The Journal of antibiotics 1992
S Nakanishi K Osawa Y Saito I Kawamoto K Kuroda H Kase

A novel compound, KS-505a was isolated from the culture broth of a strain identified as Streptomyces argenteolus A-2. The compound inhibited bovine brain Ca2+ and calmodulin-dependent cyclic-nucleotide phosphodiesterase with an IC50 value (the concentration causing 50% inhibition) of 0.065 microM. The compound around that concentration had little or no effect on heart calmodulin-dependent and -...

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