نتایج جستجو برای: dimensional

تعداد نتایج: 398964  

Journal: :Optics letters 2007
Firooz A Sadjadi

The results of experiments in developing a method for extracting three-dimensional information from a scene by means of a polarimetric passive imaging sensor are summarized. This sensor provides a full Stokes vector at each sensor pixel location from which degree and angle of linear polarization are computed. The angle of linear polarization provides the azimuth angle of the surface normal vect...

Journal: :Cardiology clinics 2007
Ivan S Salgo

This article addresses the current state of the art of technology in three-dimensional echocardiography as it applies to transducer design, beam forming, display, and quantification. Because three-dimensional echocardiography encompasses many technical and clinical areas, this article reviews its strengths and limitations and concludes with an analysis of what to use when.

Journal: :Jornal brasileiro de pneumologia : publicacao oficial da Sociedade Brasileira de Pneumologia e Tisilogia 2010
C Isabela S Silva Edson Marchiori Arthur Soares Souza Júnior Nestor L Müller

The objective of this new Brazilian consensus is to update and to continue the standardization of the principal terms and fundamental patterns in chest CT scans in Portuguese. There is a succinct definition of the principal terms used to describe chest CT findings, as well as illustrations of classic examples. The group of authors comprised radiologists specializing in chest radiology and holdi...

2011
William Croll

The construction industry is primarily concerned with increasing project quality while simultaneously maintaining and increasing the efficiency with which that quality is attained. It is proposed that both of these objectives can be achieved using a combination of existing visual analysis and three-dimensional modeling tools to identify, in real time, inconsistencies between design plans and ph...

Journal: :Physical review letters 2010
V G Nazarenko O P Boiko H-S Park O M Brodyn M M Omelchenko L Tortora Yu A Nastishin O D Lavrentovich

The surface alignment of lyotropic chromonic liquid crystals can not only be planar (tangential) but also homeotropic, with self-assembled aggregates perpendicular to the substrate, as demonstrated by mapping optical retardation and by three-dimensional imaging of the director field. With time, the homeotropic nematic undergoes a transition into a tangential state. The anchoring transition is d...

Journal: :journal of dentistry, tehran university of medical sciences 0
jafar gharechahi professor, dental research center, department of prosthodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran. nafiseh asadzadeh associate professor, department of prosthodontics, dental research center, school of dentistry, mashhad university of medical sciences, mashhad, iran. foad shahabian assistant professor, department of prosthodontics, dental research center, school of dentistry, ahvaz university of medical sciences, ahvaz, iran. maryam gharechahi assistant professor, dental material research center, department of endodontics, school of dentistry, mashhad university of medical sciences, mashhad, iran.

acrylic resin denture bases undergo dimensional changes during polymerization. injection molding techniques are reported to reduce these changes and thereby improve physical properties of denture bases. the aim of this study was to compare dimensional changes of specimens processed by conventional and injection-molding techniques.sr-ivocap triplex hot resin was used for conventional pressure-pa...

Objective(s): Cell therapy has provided clinical applications to the treatment of motor neuron diseases. The current obstacle in stem cell therapy is to direct differentiation of stem cells into neurons in the neurodegenerative disorders. Biomaterial scaffolds can improve cell differentiation and are widely used in translational medicine and tissue engineering. The aim...

2015
Jong Woo Choi Namkug Kim

[This corrects the article on p. 267 in vol. 42, PMID: 26015880.].

Journal: :Annual review of biomedical engineering 1999
G York Y Kim

Since the introduction of medical ultrasound in the 1950s, modern diagnostic ultrasound has progressed to see many major diagnostic tools come into widespread clinical use, such as B-mode imaging, color-flow imaging, and spectral Doppler. New applications, such as panoramic imaging, three-dimensional imaging, and quantitative imaging, are now beginning to be offered on some commercial ultrasoun...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1381

آنتن های زیادی با سطح مقطع استوانه ای وجود دارند که در کنار یا روی آنها تعدادی عنصر تابنده با طول محدود وجود دارند. این ساختارهای تقریبا استوانه ای را می توان با روش ‏‏‎s2ds(spectrum of two dimensional solutions)‎‏ تحلیل نمود. به این ترتیب که با استفاده از تبدیل فوریه نسبت به محور استوانه (محور ‏‎z‎‏ )، مسئله الکترومغناطیس سه بعدی اینگونه آنتن ها را می توان بصورت عکس مسائل دو بعدی با تغییرات ها...

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