نتایج جستجو برای: a field
تعداد نتایج: 13574029 فیلتر نتایج به سال:
abstract prediction of death anxiety on the basis of demographic characteristics and sp پیش بینی اضطراب مرگ براساس ویژگی های دموگرافیک و مولفه های معنویت در سالمندان به کوشش الهام حسن زهی معنویت از جمله مفاهیمی است که سالیان متمادی در حوزه روان شناسی جایگاه خود را یافته است پیشینه پژوهش نشان داده است که با متغیرهای فراوانی در روانشناسی در ارتباط بوده است. هدف از پژوهش حاضر این اس...
increasing academic and professional language demands around the world are not a deniable fact. the purpose of this study was to investigate english language needs and communication needs of the chemistry students at master and ph.d. levels at the iranian universities. in this research, different methods were used including un-structured interview, structured interview, and two sets of question...
The significant increase in using reservoir simulation models poses significant challenges in the design and calibration of models. Moreover, conventional model calibration, history matching, is usually performed using a trial and error process of adjusting model parameters until a satisfactory match is obtained. In addition, history matching is an inverse problem, and hence it may have non-uni...
The dynamical behavior of a model for body fluids in response to an external electric field is computationally investigated for communication frequencies. The effect of an applied potential difference between two electrodes in a saline solution containing a rodlike macromolecule is studied by solving the Poisson and ion continuity equations simultaneously using the finite element method (FEM). ...
measuring field gravity in sea due to the accelerations introduced via waves and movements to the gravity measuring systems has a low accuracy since according to einstein's equalent principle, gravimeter isn't able to separate the gravity acceleration from another acceleration. ship borne gravimetery observations by means of like oscillations and accelerations of the ship motion, and ...
Actors working in global health often portray it as an enterprise grounded in principled concerns, advanced by individuals and organizations who draw on scientific evidence to pursue health equity. This portrait is incomplete. It is also a field of power relations—a social arena in which actors claim and draw on expertise and moral authority to gain influence and pursue career, organizational a...
we propose a scheme for localizing an atom in a four-level configuration inside a classical standing wave field, conditioned upon the measurement of frequency of a weak probe field. in the classical standing wave field, the interaction between the atom and the field is position dependent due to the rabi-frequency of the driving field. hence, as the absorption frequency of the probe field is mea...
انتروپاتوژنیک اشریشیا کلی (epec=enteropathogenic escherichia coli) به عنوان مهم ترین عامل اسهال در کودکان است. پاتوژنز انتروپاتوژنیک اشریشیاکلی که پاتوواری از اشریشیاکلی است لزیون های a/e (attaching and efacing) است که در بیوپسی روده بیمار نیز دیده می شود. این لزیون ها توسط ژن هایی کد می شود که روی جزیره ژنومی lee (locus of enterocyte effacement) قرار دارد. شناسایی epec با استفاده از تشخیص این ...
the exposure of workers to magnetic field that occur in aluminum reduction potrooms has been studied. the pattern of magnetic field intensity has been demonstrated along the shop. it has clearly been shown that the personnel working near the pots are exposed to 20-to 1000-gauss magnetic field. to set limits of exposure to magnetic fields, the literature on the biological effects of stationary m...
مطالعه روشهای تقریبی جفت اسپین در تحولات فازهای مغناطیسی با استفاده از روش جفت اسپین مربوط به strieb, callen, horwitz تحول پیوسته سیستم های مغناطیسی با اسپین یک بررسی شد. برای اولین بار بسط لاند و بهمراه روشهای دسته بندی اسپین ها به سیستم های مغناطیسی heisenberg و blume-capple اعمال گردید تا نقاط بحرانی آن را بدست آورد. درجه حرارت بحرانی که از روش بدست می آید خیلی نزدیک است به مقدار واقعی که از...
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