نتایج جستجو برای: photo elasticity

تعداد نتایج: 52799  

2011
Thomas Fischer Anke Thomas

In recent years, the diagnostic confidence of B-mode ultrasound has been strengthened by innovations including tissue Doppler techniques and imaging of tissue elasticity. Elasticity is the ratio of the strain (pressure) required to induce relative elongation or distention (Figure 1). The intrinsic elasticity of biological tissue is altered by physiologic aging and pathologic processes such as i...

Significant decline in the slope of short-term oil supply and demand curves, along with the meaningful change in the degree of risk aversion in arbitrageurs encouraged us to test the time-varying effects of speculative demand on crude oil price dynamics over the period 1985-2016. Using a time-varying parameter vector autoregressive (TVP-VAR) model – with structural shocks identified by Killian ...

A.A. Mehrdad Sharif H. Bakhtiari N. Assi Q. S. Manuchehri Naeini

ZnO and Mn-ZnO nano powders were prepared by the sol-gel auto combustion method. The products were characterized by X-ray diffraction (XRD), energy dispersive analysis of X-ray (EDX) and scanning electron microscopy (SEM). Structural and morphological properties of nano particles were investigated and the average crystalline size of ZnO and Mn-doped ZnO was obtained 44 and 51 nm, respectively. ...

2012
Hai - Qing Yun Zeng Yong - Hong Yan Guo - Liang Zhang Tai - Hong Wang

We propose photo-BJMOSFET (Bipolar Junction Metal-Oxide-Semiconductor Field Effect Transistor) fabricated on SOI film. ITO film is adopted in the device as gate electrode to reduce light absorption. I-V characteristics of photo-BJMOSFET obtained in dark (dark current) and under 570nm illumination (photo current) are studied furthermore to achieve high photo-to-dark-current contrast ratio. Two v...

Journal: :Computer animation and virtual worlds 2015
Shan Yang Ming Lin

Material property has great importance in deformable body simulation and medical robotics. The elasticity parameters, such as Young's modulus of the deformable bodies, are important to make realistic animations. Further in medical applications the (recovered) elasticity parameters can assist surgeons to perform better pre-op surgical planning and enable medical robots to carry out personalized ...

Journal: :Computers in biology and medicine 2013
Kui Xiang Xia Li Zhu Chang-Xin Wang Bing Nan Li

Magnetic resonance elastography (MRE) is a promising method for health evaluation and disease diagnosis. It makes use of elastic waves as a virtual probe to quantify soft tissue elasticity. The wave actuator, imaging modality and elasticity interpreter are all essential components for an MRE system. Efforts have been made to develop more effective actuating mechanisms, imaging protocols and rec...

2016
Roderic S. Lakes

Department of Engineering Physics, Department of Materials Science University of Wisconsin, 1500 Engineering Drive, Madison, WI 53706-1687, USA preprint adapted from Lakes, R. S., Reduced warp in torsion of reticulated foam due to Cosserat elasticity: experiment, Zeitschrift fuer Angewandte Mathematik und Physik (ZAMP), 67(3), 1-6 (2016). Abstract Warp of cross sections of square section bars i...

Journal: :Atherosclerosis 2009
Ai Tokita Yasushi Ishigaki Hisashi Okimoto Hideyuki Hasegawa Yoshiro Koiwa Makoto Kato Hisamitsu Ishihara Yoshinori Hinokio Hideki Katagiri Hiroshi Kanai Yoshitomo Oka

BACKGROUND We previously reported the arterial elasticity value we measured to reflect the characteristic features of vessel walls, and to possibly be useful for detecting early stage atherosclerosis in type 2 diabetes. Obesity, especially visceral adiposity, is well known to play a crucial role in the development of metabolic disorders and atherosclerosis. To assess whether arterial elasticity...

Journal: :Journal of endourology 2011
Bummo Ahn Enrique Ian S Lorenzo Koon Ho Rha Hyung Joo Kim Jung Kim

PURPOSE The aim of this study was to estimate the mechanical properties (elasticity) of normal and cancer prostate tissues and to develop a tissue elasticity map for the diagnosis and localization of prostate cancer. MATERIALS AND METHODS A total of 735 sites from 35 radical prostatectomy specimens were used in the experiments using a robotic palpation system, and the elasticities of the spec...

2013
Katrina G. Salvante Alistair Dawson Robert A. Aldredge Peter J. Sharp Keith W. Sockman

Prior experience with photostimulation enhances photo-induced reproductive response in female house finches. The NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. ABSTRACT 24 In many vertebrates parental age is related to reproductive output with olde...

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