نتایج جستجو برای: single ring with drainage.

تعداد نتایج: 9517506  

Journal: :نشریه علمی - پژوهشی هیدرولوژی کاربردی 0
amin rostami sari university ali a. sadraddini tabriz university amir h. nazemi tabriz university reza delir hasannia tabriz university

use of the double ring infiltrometer to measure soil water infiltration in center pivot irrigation systems isn’t an accurate approach because the real conditions of infiltration under center pivot sprinklers is different from what happens in the double ring. in this study the infiltration parameters were evaluated in real conditions of a center pivot system. for this purpose a single ring with ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی برق و کامپیوتر 1391

this thesis is presented 10 ghz voltage controlled ring oscillator for high speed application. the voltage controlled ring oscillator was designed and fabricated in 0.13یm cmos technology. the oscillator is 7-stages ring oscillator with one inverter replaced by nand-gate for shutting down in the ring oscillator during idle mode. tri-state inverter was used to control of 126 bit vector in ri...

Use of the double ring infiltrometer to measure soil water infiltration in center pivot irrigation systems isn’t an accurate approach because the real conditions of infiltration under center pivot sprinklers is different from what happens in the double ring. In this study the infiltration parameters were evaluated in real conditions of a center pivot system. For this purpose a single ring...

Journal: :پژوهش آب در کشاورزی 0
امین رستمی دانشجوی سابق کارشناسی ارشد، گروه مهندسی آب، دانشگاه تبریز، ایران. علی اشرف صدرالدینی استاد گروه مهندسی آب، دانشگاه تبریز، ایران. امیرحسین ناظمی استاد گروه مهندسی آب، دانشگاه تبریز،ایران رضا دلیر حسن نیا استادیار گروه مهندسی آب، دانشگاه تبریز، ایران احمد فاخری فرد استاد گروه مهندسی آب، دانشگاه تبریز، ایران

use of the double ring infiltrometer to measure soil water infiltration in center pivot irrigation systems is not an accurate approach; because the real conditions of infiltration under center pivot sprinklers is different from what happens in the double ring. in this study, the infiltration parameters were determined under real conditions of a center pivot system. for this purpose, a single ri...

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

throughout this dissertation r is a commutative ring with identity and m is a unitary r-module. in this dissertation we investigate submodules of multiplication , prufer and dedekind modules. we also stat the equivalent conditions for which is ring , wher l is a submodule of afaithful multiplication prufer module. we introduce the concept of integrally closed modules and show that faithful mu...

Journal: :iranian journal of child neurology 0
guruprasada shetty 1.department of pediatrics, father muller medical college,mangalore karnataka, india kadke shreedhara avabratha 1.department of pediatrics, father muller medical college,mangalore karnataka, india boodyar sanjeev rai 1.department of pediatrics, father muller medical college,mangalore karnataka, india

how to cite this article: shetty g, avabratha k.s, rai b.s. ring-enhancing lesions in the brain: a diagnostic dilemma. iran j child neurol. 2014 summer;8(3): 61-64. abstract the most common radiological abnormality seen in young indian patients with epilepsy is single small enhancing (ring/disc) computed tomographic (ct) lesions. the two most common differential diagnosis of this lesion in clin...

Though it is vital to estimate infiltration as one of the key factors in effective management of water resources, only few studies have been carried out either to determine the infiltration or to compare the performance of infiltration models for coarse textured soils. Thus, the present study was conducted to accomplish two objectives. First to estimate the Horton’s infiltration model parameter...

Journal: :مدیریت خاک و تولید پایدار 0
هیوا خانی چراغبدال دانشگاه ارومیه حبیب خداوردیلو دانشگاه ارومیه حسین عسگرزاده دانشگاه ارومیه شجاع قربانی دشتکی انشگاه شهرکرد

field saturated hydraulic conductivity (kfs) is one of the most important soil properties that considerably contribute to soil quality. however, specifically in the structured soils, the measurement of kfs is difficult and time-consuming. therefore, verifying the simple and fast methods for kfs measurement is needed for effective soil monitoring. this study was conducted to investigate the effe...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2008
mahdi jafari amir badakhshan vahid taghikhani davood rashtchian cirous ghotbi

the experimental study and modeling of gravity drainage during water alternative gas injection, wag process, in carbonate rock for one of the iranian off-shore reservoir at lab-scale were carried out. the mechanism of gravity drainage during the wag process, and its contribution to the oil recovery in the fractured carbonate reservoirs were also studied. in the wag process alternatively gas is ...

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