نتایج جستجو برای: ehpa 2d

تعداد نتایج: 83082  

Journal: :Journal of Applied Physics 2021

The computing industry is rapidly moving from a programming to learning area, with the reign of von Neumann architecture starting fade, after many years dominance. new paradigms non-von architectures have started leading development emerging artificial neural network (ANN)-based analog electronic intelligence (AI) chipsets remarkable energy efficiency. However, size and advantages processing el...

Majid Masoudifard Mohammad Molazem, Noshin Ghazale Sarang Soroori, Shaghayegh Asadi Shahram Jamshidi

Objective: Detection and evaluation of adrenal glands are complex problems in conventional ultrasonography in dogs. Using three-dimensional (3D) ultrasonography (US) in adrenal gland volume evaluation can add new potential for further adrenal studies. Design: Descriptive study Animals: a total of 10 mix breed dogs Procedures: The dogs underwent two dimensional (2D) and 3D US of the adrenal g...

‎In this paper‎, ‎we introduce the two-dimensional Legendre wavelets (2D-LWs)‎, ‎and develop them for solving a class of two-dimensional integro-differential equations (2D-IDEs) of fractional order‎. ‎We also investigate convergence of the method‎. ‎Finally‎, ‎we give some illustrative examples to demonstrate the validity and efficiency of the method.

Journal: :iranian journal of medical physics 0
zahra falahatpour m.sc. graduate of medical radiation, nuclear engineering dept., faculty of nuclear engineering, shahid beheshti university, tehran, iran seyed mahmood reza aghamiri associate professor, nuclear engineering dept., faculty of nuclear engineering, shahid beheshti university, tehran, iran robab anbiaee assistant professor, radiotherapy and oncology dept., emam hossein hospital, shahid beheshti university, tehran, iran

introduction: breast conserving radiotherapy is one of the most common procedures performed in any radiation oncology department. a tangential parallel-opposed pair is usually used for this purpose. this technique is performed using 2d or 3d treatment planning systems. the aim of this study was to compare 2d treatment planning with 3d treatment planning in tangential irradiation in breast conse...

ژورنال: :مهندسی بهداشت محیط 0
مرتضی سیدیان morteza seyedian استادیار دانشکده کشاورزی، دانشگاه گنبدکاووس، گنبد، ایران معصومه فراستی masumeh farasati 2 استادیار دانشکده کشاورزی، دانشگاه گنبدکاووس، گنبد، ایران علی حشمت پور ali heshmatpoor استادیار دانشکده کشاورزی، دانشگاه گنبدکاووس، گنبد، ایران اکبر رسولی akbar rasouli دانشجوی کارشناسی گروه مهندسی آب، دانشکده کشاورزی، دانشگاه رازی کرمانشاه، ایران

زمینه و هدف:  با افزایش جمعیت جهان و نیاز به تامین غذا، امروزه کشاورزان به استفاده از انواع کودهای نیتراته، آلی و آفت کش ها روی آورده اند. کاربرد بی رویه این نهاده ها بدون در نظرگرفتن اثرات جانبی آن، مشکلات فراوانی چه از نظر زیست محیطی و چه از نظر سلامتی انسان ها به همراه می آورد. این ترکیبات از طریق بارندگی یا آبیاری از محلول خاک وارد منابع آب سطحی و زیرزمینی می شوند. هدف از این تحقیق تعیین می...

Journal: :computational methods for differential equations 0
ahmet bekir eskisehir osmangazi university, art-science faculty, department of mathematics-computer abdelfattah el achab university of choua¨ıb doukkali

the first integral method is an efficient method for obtaining exact solutions of some nonlinear partial differential equations. this method can be applied to non integrable equations as well as to integrable ones. in this paper, the first integral method is used to construct exact solutions of the 2d ginzburg-landau equation.

Journal: :فیزیک زمین و فضا 0
mohammad ali shahrabi m. sc. in geophysics, department of earth physics, institute of geophysics, university of tehran, iran mohammad kazem hafizi professor, department of earth physics, institute of geophysics, university of tehran, iran hosein hashemi assistant professor, department of earth physics, institute of geophysics, university of tehran, iran pejman shahsavari m. sc. in geophysics, department of earth physics, institute of geophysics, university of tehran, iran

since hydrocarbon sources have an important role in development of industry and technology, exploration of them has been lionized by human. the seismic reflection method is one of the most applicable investigative methods to identify the hydrocarbon reservoirs, but in some cases this method does not work well because of geology conditions and wave attenuation in depth. thus, some exploration me...

Journal: :Cardiovascular Ultrasound 2009
Kambiz Shahgaldi Petri Gudmundsson Aristomenis Manouras Lars-Åke Brodin Reidar Winter

BACKGROUND Visual assessment of left ventricular ejection fraction (LVEF) is often used in clinical routine despite general recommendations to use quantitative biplane Simpsons (BPS) measurements. Even thou quantitative methods are well validated and from many reasons preferable, the feasibility of visual assessment (eyeballing) is superior. There is to date only sparse data comparing visual EF...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی شاهرود - دانشکده کشاورزی 1390

فعالیت های کشاورزی از پر اهمیت ترین منابع بشری آلودگی نیترات در آب های زیر زمینی هستند و آب شویی نیترات از این سیستم ها اثر مستقیمی بر کیفیت آب زیر زمینی دارد. در طول دهه اخیر اهمیت آلودگی آب های زیر زمینی به دلیل افراط در مصرف کود های ازته در مناطق با کشاورزی متمرکز، افزایش یافته است. باید توجه داشت که افزایش عملکرد نباید به تخریب محیط زیست منجر گردد. بالا بردن تولید در واحد سطح و بهبود کمی و ...

Journal: :علوم و تکنولوژی پلیمر 0
فرشید ضیایی سید مهرداد جلیلیان

in this research, the tacticity and microstructure of polyvinyl chloride (pvc) were studied through back bone methylene and methine carbons and protons splitting by carbon (13c nmr), proton (1h nmr) and two-dimensional (2dnmr) nulear magnetic resonance spectroscopy in deuterated etrahydrofuran.polyvinyl chloride was synthesized by emulsion polymerization of vinyl chloride (vcm) under pressure t...

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