نتایج جستجو برای: microstructural changes

تعداد نتایج: 884191  

Journal: :international journal of iron and steel society of iran 0
s. zarei department of mechanical engineering, isfahan university of technology, isfahan 84156-83111, iran r. jafari nedoushan department of mechanical engineering, isfahan university of technology, isfahan 84156-83111, iran

the microstructure of dual phase steels can be considered as a matrix of ferrite phase reinforced by martensite particles. recent measurements show that the mechanical properties of the ferrite phase are changed with the distance from the martensite grains. in this paper, a new method has been proposed to consider this phenomenon in finite element modeling of dual phase steels microstructure. i...

2012
Junzhong Xu Ke Li R. Adam Smith John C. Waterton Ping Zhao Heidi Chen Mark D. Does H. Charles Manning John C. Gore

Measurements of apparent diffusion coefficient (ADC) using magnetic resonance imaging (MRI) have been suggested as potential imaging biomarkers for monitoring tumor response to treatment. However, conventional pulsed-gradient spin echo (PGSE) methods incorporate relatively long diffusion times, and are usually sensitive to changes in cell density and necrosis. Diffusion temporal spectroscopy us...

This study was performed to recognize the loess texture in Golestan Province, Iran using the microstructure analysis according to the electron microscopic images. Loess microstructure study allows for investigating the characteristics of particle shape, fabric, cement and porosity in microscopic images. In recent years, computer analysis has been replaced with manual calculation due to its high...

Journal: :AJNR. American journal of neuroradiology 2007
M I Makki D C Chugani J Janisse H T Chugani

BACKGROUND AND PURPOSE Although patients with tuberous sclerosis complex (TSC) manifest various structural abnormalities, we hypothesized that white matter (WM) structures that appear normal on conventional MR imaging may be accompanied by microstructural changes, such as gliosis and myelinization defects. Our objective was to determine in vivo whether there was evidence for WM microstructural ...

2016
Hanganu Alexandru Muthuraman Muthuraman Venkata Chaitanya Chirumamilla Nabin Koirala Burcu Paktas Günther Deuschl Kirsten E. Zeuner Sergiu Groppa

OBJECTIVE Benign Essential Blepharospasm (BEB) and hemifacial spasm (HFS) are the most common hyperkinetic movement disorders of facial muscles. Although similar in clinical presentation different pathophysiological mechanisms are assumed. Botulinum Neurotoxin (BoNT) is a standard evidence-based treatment for both conditions. In this study we aimed to assess grey matter microstructural differen...

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