نتایج جستجو برای: 3d

تعداد نتایج: 188455  

Journal: :علوم کاربردی و محاسباتی در مکانیک 0
جعفر جماعتی حمید نیازمند سیدعلی میربزرگی

numerical investigation of 3d electrokinetic mixing through micromixer has performed both qualitatively and quantitatively. in order to reduce numerical expenses of 3d flows, we implement the helmholtz-smoluchowski method for the numerical modeling of electroosmotic flows. according to the previous study of electrokinetic mixing inside the heterogeneous microchannels, existence of the vortexes ...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2013
j. jamaati h. niazmand m. renksizbulut

a numerical study of 3d electrokinetic flows through micromixers was performed. the micromixers considered here consisted of heterogeneous rectangular microchannels with prescribed patterns of zeta-potential at their walls. numerical simulation of electroosmotic flows within heterogeneous channels requires solution of the navier-stokes, ernest-plank and species concentration equations. it is kn...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1389

یکی از سیستم های نوین ساختمانی که امروزه در دنیا متداول است، پانل های پیش ساخته سبک سه بعدی بتنی موسوم به پانل های 3d است. . این پانل ها که می توانند به صورت المان های باربرو غیرباربر استفاده شوند از دو شبکه فولادی و یک هسته عایق تشکیل می شوند که به وسیله تعدادی اعضای قطری مورب به یکدیگر متصل می شوند. پس از نصب این پانل ها در محل، لایه های بتن آرمه روی آنها بتن پاشی می شود. یکی از سوالات اساسی ...

Journal: :international journal of hematology-oncology and stem cell research 0
seyed hadi mousavi phd student of hematology, department of hematology and blood banking, faculty of medical sciences, tarbiat modares university, tehran, iran. saeid abroun associated professor of hematology, department of hematology and blood banking, faculty of medical sciences, tarbiat modares university, tehran, iran. masoud soleimani associated professor of hematology, department of hematology and blood banking, faculty of medical sciences, tarbiat modares university, tehran, iran. seyed javad mowla associated professor of genetic, department of molecular genetics, faculty of biological sciences, tarbiat modares university, tehran, iran.

allogeneic hematopoietic stem cell transplantation is used in the treatment of patients suffering from hematologic and non-hematologic disorders, but the application is limited by the identification of a suitable donor. umbilical cord blood (ucb) is an alternative source of hematopoietic stem cell (hsc) transplantation. despite all advantages, the limited cell dose is one of the  major obstacle...

Journal: :international clinical neurosciences journal 0
amirhossein saveh functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran alireza zali functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran farzad ashrafi functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran sohrab shahzadi functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran afsoun seddighi functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran sirous momenzadeh functional neurosurgery research center, shahid beheshti university of medical sciences, tehran, iran

to perform an accurate approach to the spine specially for fracture stabilization a 3d model of spine surgical region may improve this mechanism and it can help the surgeon to have a deeper glance to this scenario. the pre-op planning facility is another advantage of the patient spine specific model to take a chance of making guides to direct pedicle screws safely and increase the pathomechanic...

With the growing dominance of complex and multi-level urban structures, current cadastral systems, which are often developed based on 2D representations, are not capable of providing unambiguous spatial information about urban properties. Therefore, the concept of 3D cadastre is proposed to support 3D digital representation of land and properties and facilitate the communication of legal owners...

In recent years, great efforts have been made to generate 3D models of urban structures in photogrammetry and remote sensing. 3D reconstruction of the bridge, as one of the most important urban structures in transportation systems, has been neglected because of its geometric and structural complexity. Due to the UAV technology development in spatial data acquisition, in this study, the point cl...

three dimensional- high efficiency video coding (3D-HEVC) is the expanded version of the latest video compression standard, namely high efficiency video coding (HEVC), which is used to compress 3D videos. 3D videos include texture video and depth map. Since the statistical characteristics of depth maps are different from those of texture videos, new tools have been added to the HEVC standard fo...

Despite considerable enhances in recognizing hand gestures from still images, there are still many challenges in the classification of hand gestures in videos. The latter comes with more challenges, including higher computational complexity and arduous task of representing temporal features. Hand movement dynamics, represented by temporal features, have to be extracted by analyzing the total fr...

Three-dimensional tools are widely used for various purposes, particularly Three- dimensional printers which play a great role in simplification and acceleration of phases in production process for various fields ranging from medicine to industry. Due to the problems related to the reconstruction of missing parts in restoration of historic glass objects in the methods of molding, casting and f...

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