نتایج جستجو برای: modified coefficient efficiency ()

تعداد نتایج: 781710  

Journal: :journal of agricultural science and technology 2015
t. öztekin s. öztekin n. geboloğlu

this experiment aimed to determine evapotranspiration, and responses of some yield and quality parameters of subsurface drip irrigated broccoli (brassica oleraceae l.). treatments included water application when available soil moistures were depleted 30, 40, and 50% during both spring and autumn cultivations. under a semi-arid climatic condition of tokat, turkey, the experiment was carried out ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم انسانی 1392

abstract the present study deals with a comparison between reactive and pre-emptive focus-on-form in terms of application and efficiency. it was conducted in an intermediate english class in shahroud. 15 male learners participated in this research and their age ranged from 18 to 25. a course book, new interchange 3, and a complementary book were used. every session the learners gave lectures o...

ژورنال: علوم آب و خاک 2012
جواد وروانی, , علی نجفی‌نژاد, , واحدبردی شیخ, , مهدی مردیان, ,

Investigation in to the sediment delivery of watersheds and its variation is an important element of ecosystem management. Since sediment load depends on runoff quantity, and runoff is considered as a unique indicator of sediment load, in this research the two modified versions of the MUSLE model were evaluated for 9 torrential events in two subwatersheds of the Kamal Saleh watershed in the Mar...

Journal: :تحقیقات نظام سلامت 0
محسن سعدانی دانشجوی دکتری، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، مربی، دانشکده بهداشت، دانشگاه علوم پزشکی و خدمات بهداشتی درمانی شهید صدوقی یزد، ایران احسان ابویی مهریزی عضو هیأت علمی گروه مهندسی بهداشت محیط دانشگاه علوم پزشکی خراسان شمالی، بجنورد، ایران کمال غدیری دانشجوی دکتری بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی تهران، تهران، ایران

background: presence of heavy metals in leachate due to the biological accumulation characteristics of these materials endangered the living creatures' health especially human. purpose of this study is to study and investigate the possibility of two metals' absorption i.e, lead and cadmium from leachate by natural zeolite clinopteliolit and increase of the ability to absorb the zeolite by modif...

Journal: :محیط شناسی 0
عادل اصفهانی گروه مهندسی آب دانشگاه زابل، دانشجوی کارشناسی ارشد آبیاری و زهکشی زمان شامحمدی حیدری گروه مهندسی آب دانشگاه زابل، دانشیار گروه مهندسی آب

the purpose of this study is comparison of manganese absorption capacity by natural and modified zeolite. for this purpose used by from semnan mines zeolite with mean particle diameter of 360 micrometer. for modified zeolite, 5 g amount of natural zeolite with 100 ml of 1 m sodium chloride solution mixed and maintained at 24 hours in room temperature. for measure specific surface of absorbents,...

M. Homaee, N.A. Karimian S. Saadat Y. Hosaini

Boron (B) is essential to growth at low concentrations and limits growth and yield when in excess. Little is known regarding plant response to excess B and salinity occurring simultaneously. In this study, two models of Leibig-Sprengel (LS) and Mitscherlich-Baule (MB), originally proposed to explain plant response to nutrients only, were modified to evaluate canola yield response to combined le...

ژورنال: سلامت و محیط زیست 2011
اسرافیلی, علی, اعلایی, لطیفه, جرفی, سهند, جعفرزاده حقیقی فرد, نعمت الله, رضایی کلانتری, روشنک, محسنی بندپی, انوشیروان,

Background and Objectives: Fluoride is widely used in industries such as manufacture of semiconductors, power plants, glass production etc and release to the environment via their effluents. The purpose of this sturdy was to compare the efficiency of low price adsorbents in fluoride removal from water.Materials and Methods: The optimum values of pH, contact time and adsorbent dosage were determ...

2003
Li Tan Montri Karnjanadecha

This paper describes the principle of MFCC feature extraction and the knowledge of human auditory masking effect in order to introduce a modified-MFCC feature extraction that can improve the robustness of speech recognition systems.

2011
Jonathan Pinel Laurent Girin

Sparse representations have proved a very useful tool in a variety of domain, e.g. speech/music source separation. As strictly sparse representations (in the sense of l) are often impossible to achieve, other ways of studying signals sparsity have been proposed. In this paper, we revisit the irrelevance filtering analysis-synthesis approach proposed in (Balazs et al., IEEE Trans. ASLP, 18(1), 2...

Journal: :iranian journal of health sciences 0
soheil sobhanardakani department of the environment, school of basic sciences, hamedan branch, islamic azad university, hamedan, iran raziyeh zandipak young researchers and elite club, hamedan branch, islamic azad university, hamedan, iran

background and purpose: recently, release of pollutants such as heavy metal ions to the environment becomes one of the most important problems for soil and water. the present study was conducted to introduce modified rice husk (rh) as a new low-cost adsorbent. materials and methods: in this study, tartaric acid modified rh (tarh), was used as an adsorbent for removal of ni(ii) and cd(ii) from w...

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