نتایج جستجو برای: each containing 30

تعداد نتایج: 1757873  

Journal: :مرتع و آبخیزداری 0
محمدعلی زارع چاهوکی دانشیار دانشکده منابع طبیعی، دانشگاه تهران، ایران مسعود یوسفی کارشناس ارشد سازمان تحقیقات، آموزش و ترویج وزارت جهاد کشاورزی، ایران محمد جعفری استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران حسین آذرنیوند استاد دانشکده منابع طبیعی، دانشگاه تهران، ایران مرجان شفیع زاده نصرآبادی دانش آموخته کارشناسی ارشد منابع طبیعی دانشگاه تهران

the current research was carried out to find out the most effective environmental factors in plant species occurrence by classification and ordination methods. for this purpose, the study was conducted in nir rangelands of yazd province and topography, climate, soil and grazing intensity data of the region were determined. sampling method was randomized–systematic and within each sampling unit ...

2004
P. D. DAUNCEY

The CALICE Electromagnetic CALorimeter (ECAL) will be a silicon-tungsten sampling calorimeter [1] with 30 layers of silicon wafers, each containing an 18×18 array of diode pads, giving 9720 channels to be read out. The signal from each pad is amplified by a Very Front End (VFE) ASIC [2] which multiplexes the signals from 18 pads onto one output line. The silicon wafers and VFE chips are mounted...

Journal: :journal of dentistry, tehran university of medical sciences 0
farzin heravi dental materials research center, professor of orthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. maryam omidkhoda oral & maxillofacial diseases research center, associate professor of orthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. niloufar koohestanian general dentist and research scholar, division of biomedical engineering, brigham and woman's hospital, harvard medical school, boston, usa. tabassom hooshmand associate professor, department of dental biomaterials, school of dentistry, tehran university of medical sciences, tehran, iran. hossein bagheri assistant professor of dental biomaterials, dental materials research center, department of operative dentistry, faculty of dentistry, mashhad university of medical sciences, mashhad, iran. negin ghaffari dental student, university of toronto, faculty of dentistry. toronto, canada.

objectives: the aim of this study was to evaluate and compare the retentive strength of orthodontic bands cemented with amorphous calcium phosphate (acp)-containing and conventional glass ionomer cements (gics). materials and methods: one-hundred-and-twenty mandibular third molars were embedded in acrylic resin blocks with the buccal surface of crowns perpendicular to the base of the mold. the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1379

‏‎for the first time nakayama introduced qf-ring. in 1967 carl. faith and elbert a. walker showed that r is qf-ring if and only if each injective right r-module is projective if and only if each injective left r-modules is projective. in 1987 s.k.jain and s.r.lopez-permouth proved that every ring homomorphic images of r has the property that each cyclic s-module is essentialy embeddable in dire...

Journal: :Current opinion in cell biology 1993
J R Swedlow D A Agard J W Sedat

Recent in situ three-dimensional structural studies have provided a new model for the 30 nm chromatin fiber. In addition, research during the past year has revealed some of the molecular complexity of non-histone chromosomal proteins. Still to come is the unification of molecular insights with chromosomal architecture.

Journal: :iranian journal of veterinary research 2011
b. jalali jafari a. miar

in this paper, the metazoan parasite community system of capoeta damascina in the tigris basin (mesopotamian region) in the middle-east is presented. overall, 54 species have been identified. between 2005 and 2008, iranian surveys of capoeta damascina found a total of 47 metazoan parasites species, most identified to species level. in addition, 6 parasite species from iraq and 1 species from oc...

Journal: :Fizika tverdogo tela 2021

A series of ZnTe matrix containing two CdTe monolayers separated by barrier layers different thicknesses is studied. The dependences the energies exciton emission bands related to monolayers, their relative intensities, and temperature behavior on thickness layer are determined. It established that can be considered independent each other with a more than 30 monolayers.

2017
Jun-ichi Nishikawa Yasutoshi Shimooka Takashi Ohyama

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

this study was an attempt to investigate the effect of using c-test passages on the reading comprehension and incidental vocabulary learning of iranian intermediate efl learners. the participants were 60 male efl learners at kish mehr institute in garmsar. in fact, there were two groups, an experimental group and a comparison group with 30 students in each. the participants were pretested throu...

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