نتایج جستجو برای: 3d effect

تعداد نتایج: 1816193  

2012
ayue Pan Xuejin Zhao Chi Zhou Yong Chen

The surface finish is critical for applications such as optics, micro-fluid flow and mechanical assembly, in which optical lenses, fluidic channels and rotating components are all required to be smooth. However, the stair-stepping effect is well known in the layer-based additive manufacturing processes, in which a three-dimensional model is approximated by a set of two-dimensional layers. Conse...

2012
Michael Anderson Kurt Keutzer Avideh Zakhor

Automated 3D modeling of building interiors is useful in applications such as virtual reality and environment mapping. Texture mapping walls is an important step in visualizing the results of an indoor 3D modeling system. Methods to localize the camera in the 3D scene often are not pixel accurate, meaning that when multiple images are used for texture mapping there are seams and discontinuities...

2005
Jiang Wei Shigeki Sugimoto Masatoshi Okutomi

In this paper, we propose a novel approach for obtaining 3D information of panoramic (360 degrees) environments. We design an image acquisition rig composed with a camera and two planar mirrors. The regular image captured by the camera is separated into uncontinuous three regions by the mirrors arranged in front of the camera. By rotating the rig about a vertical axis with a constant velocity, ...

2015
Pengxiao Sun Nianduan Lu Ling Li Yingtao Li Hong Wang Hangbing Lv Qi Liu Shibing Long Su Liu Ming Liu

High density 3-dimensional (3D) crossbar resistive random access memory (RRAM) is one of the major focus of the new age technologies. To compete with the ultra-high density NAND and NOR memories, understanding of reliability mechanisms and scaling potential of 3D RRAM crossbar array is needed. Thermal crosstalk is one of the most critical effects that should be considered in 3D crossbar array a...

ژورنال: :مجله دانشگاه علوم پزشکی مازندران 0
هاله اخوان نیاکی haleh akhavan niaki associate professor, department of anatomy, faculty of medicine, babol university of medical sciences, babol, iranعلوم پزشکی مازندران طیبه شمالی tayebeh shomali student of pharmacy, pharmaceutical sciences research center, hemoglobinopathy institute, student research committee, faculty of pharmacy, mazandaran university of medical sciences, sari, iranعلوم پزشکی مازندران محسن آسوری mohsen asouri north research center, pasteur institute of iran, amol, iranعلوم پزشکی مازندران سید محمدباقر هاشمی سوته seyed mohammadbagher hashemi associate professor, department of immunology, molecular and cell biology research centre, faculty of medicine, mazandaran university of medical sciences, sari, iranعلوم پزشکی مازندران حامد حقی hamed haghi phd student in toxicology, school of pharmacy, tehran university of medical sciences, tehran, iran 6 general practitioner, social security organization, sari, iranعلوم پزشکی مازندران محمد خورشیدی mohammad khorshidi assiastant professor, department of toxicology and pharmacology, thalassemia research center and pharmaceutical sciences research center, hemoglobinopathy institute, mazandaran university of medical science, sari, iranعلوم پزشکی مازندران رامین عطایی

سابقه و هدف: استئوپروز بیماری چندگانه ای است که مشخصه آن کاهش توده استخوانی و استحکام آن است . این کاهش در زنان یائسه به علت کاهش هورمون استروژن بارزتر است. ویتامین d3 با اتصال به رسپتور استروئیدی هسته ای نقش محوری در متابولیسم اسکلتال بازی می کند. این مطالعه با هدف تعیین ارتباط بین پلی مورفیسم (2228570rs) foki با پوکی استخوان در خانم های یائسه انجام شد. مواد و روش ها: در این مطالعه91 بیمار است...

Journal: :iranian journal of radiology 0
hamed naghibi school of allied medical sciences, shahid beheshti university of medical sciences,tehran, iran hedayatolah soroush advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran fariborz faeghi radiology technology department, school of allied medical sciences, shahid beheshti university of medical sciences,tehran, iran; radiology technology department, school of allied medical sciences, shahid beheshti university of medical sciences, tehran, iran madjid shakiba advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran amir reza farhoud department of orthopedics, imam hospital complex, tehran university of medical sciences (tums), tehran, iran hassan hashemi advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran

conclusion high-resolution mr images of the wrist using 3d t2space, pd blade and t2 blade were superior to those using conventional sequences quantitatively. high-snr and cnr mr imaging with space and blade would be a promising method to diagnose wrist lesions. results snr of the cartilage, tfcc on 3d t2space and t1 fse was better than other sequences (p < 0.001). snr of the bone on pd blade wa...

ژورنال: :ماهنامه شباک (شبکه اطلاعات کنفرانس های کشور) 0
سامان سخایی saman sakhaee ابراهیم نوحانی ebrahim nohani علی افروس ali afrus

با توجه به رشد روزافزون جمعیت و افزایش نیاز به آب، ضرورت احداث سدهای بزرگ و بدنبال آن سرریزهایی که توان عبور دبیهای زیاد را داشته باشند هر بیشتر احساس میگردد. یکی از مشکلاتی که ساختمان سرریز سدها را تهدید میکند پدیده کاویتاسیون است. تجربه نشان داده است که در جریانهای سریع بر روی این نوع سرریزها وقتی که سرعت آب زیاد که یک نرمافزار قوی در زمینه flow-3d شود احتمال خطر کاویتاسیون زیاد میباشد. در ای...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه - دانشکده کشاورزی 1393

سرریز یکی از سازه های هیدرولیکی وابسته سد برای کنترل سطح آب مخزن و تخلیه سیلاب است. هدف اصلی در تحقیق حاضر، شبیه سازی عددی جریان بر روی سرریز ogeeبا استفاده از مدل ریاضی flow-3d بوده است. رودخانه نازلو یکی از مهم ترین رودخانه های غربی حوضه دریاچه ارومیه است. سد مخزنی نازلو در شمال باختری ارومیه بر رودخانه نازلو احداث می گردد. مدل فیزیکی سرریز سد مخزنی نازلو با مقیاس 1:40 در موسسه تحقیقات آب وزا...

2008
Nadeen O. Chahine Nicole M. Collette Heather Thompson Gabriela G. Loots

Carbon nanotubes (CNT) have the potential to become an important component of scaffolding in tissue engineering, due to their unique physical properties. However, one major limitation of CNTs that must be overcome is their inherent cytotoxicity. In this study, we assessed the long-term biocompatibility of CNTs for chondrocyte growth. The effect of CNTs on chondrocyte viability and biochemical d...

2008
Thomas Y. Hou Zhen Lei

We investigate the stabilizing effect of convection in 3D incompressible Euler and NavierStokes equations. The convection term is the main source of nonlinearity for these equations. It is often considered destabilizing although it conserves energy due to the incompressibility condition. In this paper, we show that the convection term together with the incompressibility condition actually has a...

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