نتایج جستجو برای: ring

تعداد نتایج: 122997  

Journal: :journal of algebra and related topics 2016
m. phani krishna kishore

in this paper the concept of an $omega$- almost boolean ring is introduced and illistrated how a sheaf of algebras can be constructed from an $omega$- almost boolean ring over a locally boolean space.

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: :international journal of bio-inorganic hybrid nanomaterials 2015
m. khaleghian f. azarakhshi g.r. ghshami

to calculation non-bonded interaction of the [cocl6]3- complex embedded in nano ring, we focus on the single wall boron-nitride b18n18 nano ring. thus, the geometry of b18n18 nano ring has been optimized by b3lyp method with epr-ii (electron paramagnetic resonance) basis set and geometry of the [cocl6]3- complex has been optimized at b3lyp method with aldrich’s vtz basis set and stuttgart rsc 1...

In this paper the concept of an $Omega$- Almost Boolean ring is introduced and illistrated how a sheaf of algebras can be constructed from an $Omega$- Almost Boolean ring over a locally Boolean space.

This paper is an attempt to generalize, simultaneously, the ring of real-valued continuous functions and the ring of real-valued measurable functions.

ژورنال: :تحقیقات جنگل و صنوبر ایران 0
مهسا کریمی دانشجوی کارشناسی ارشد، گروه جنگلداری، دانشگاه علوم کشاورزی و منابع طبیعی ساری محمدرضا پورمجیدیان دانشیار، گروه جنگلداری، دانشگاه علوم کشاورزی و منابع طبیعی ساری حمید جلیل وند دانش آموختۀ کارشناسی ارشد، گروه جنگلداری، دانشکده منابع طبیعی امیر صفری دانش آموختۀ کارشناسی ارشد، گروه جنگلداری، دانشکده منابع طبیعی

هدف این پژوهش بررسی مقدماتی کارایی تابع o-ring در تعیین کنش متقابل و الگوی مکانی درختان در جنگلهای زاگرس در مقیاس کوچک است. مطابق با هدف تحقیق که آزمون کارایی تابع o-ring بود عرصه­ای به مساحت 2 هکتار در جنگلهای باینگان انتخاب و موقعیت مکانی تمامی درختان بلوط ایرانی و بنه به عنوان گونه­های غالب در قطعه مورد بررسی با استفاده از روش فاصله تا خطوط موازی تعیین و در نهایت نقشه مکانی درختان تهیه شد. ا...

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: :bulletin of the iranian mathematical society 0
nader mohammad ghosseiri academic member of university of kurdistan

abstract. let r be a 2-torsion free ring with identity. in this paper, first we prove that any jordan left derivation (hence, any left derivation) on the full matrix ringmn(r) (n  2) is identically zero, and any generalized left derivation on this ring is a right centralizer. next, we show that if r is also a prime ring and n  1, then any jordan left derivation on the ring tn(r) of all n×n up...

Journal: :journal of sciences islamic republic of iran 0

in this paper, for a complete lattice l, we introduce interval-valued l-fuzzy ideal (prime ideal) of a near-ring which is an extended notion of fuzzy ideal (prime ideal) of a near-ring. some characterization and properties are discussed.

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