نتایج جستجو برای: fiber angle

تعداد نتایج: 258005  

1998
Y. Deng Yulin Deng

The Wilhelmy principle was used to investigate the wettability of wood fibers in various aqueous solutions. The sensitivity and reproducibility of the measurement were significantly improved by using a group of separated fibers as compared to a single-fiber method that was reported previously. This accurate and reproducible method allowed us to investigate contact angle and wettability of wood ...

Journal: :Fibers 2021

This work aims to investigate the physical and mechanical properties of sisal fiber yarn Moroccan origin. The cellulosic non-cellulosic constituents were identified by FTIR spectroscopy. thermal studied thermogravimetric analysis. hydrophilicity was evaluated contact angle. results show that has a low stability. analyzed Impregnated Fiber Bundle Test (IFBT) method porosity impregnated yarns twi...

Journal: :journal of membrane science and research 0
zohreh abolfazli department of chemical engineering, babol noshirvani university of technology, babol, iran ahmad rahimpour department of chemical engineering, babol noshirvani university of technology, babol, iran

this study focuses on the preparation and modification of a thin-film composite (tfc) hollow fiber polyamide membrane fabricated by the interfacial polymerization of piperazine (pip) and trimesoyl chloride (tmc) on a porous polysulfone substrate. the effects of triethylenetetramine (teta) and silica nanoparticles (sio2) contents in the aqueous phase (as the additives) on the morphology and perf...

Journal: :American journal of physiology. Regulatory, integrative and comparative physiology 2011
Erin K Englund Christopher P Elder Qing Xu Zhaohua Ding Bruce M Damon

The purposes of this study were to create a three-dimensional representation of strain during isometric contraction in vivo and to interpret it with respect to the muscle fiber direction. Diffusion tensor MRI was used to measure the muscle fiber direction of the tibialis anterior (TA) muscle of seven healthy volunteers. Spatial-tagging MRI was used to measure linear strains in six directions du...

Journal: :علوم و تکنولوژی پلیمر 0
محمدصالح احمدی مجیدصفر جوهری مجتبی صدیقی مسعود اسفنده

in this research, a braiding-pultrusion production line is developed by modifying a conventional textile maypole braiding machine and adding it to a pultrusion line for production of braid-pultruded (bp) composite rods. in order to evaluate the mechanical properties of bp rods and study the effect of some braiding parameters, they were produced with different braid roving linear densities and b...

Journal: :Current Directions in Biomedical Engineering 2022

Abstract In current endoscopes, the estimation of proximity to surrounding tissue is based on experience user. To provide precise meassurement, a suitable sensor needed. This paper presents fiber optic that inserted through working channel an endoscope. The impact cutting angle at distal end optical investigated. If cut 3° axis, measurement signal in axial direction can be increased by 126mV pe...

2007
Drew A. Lansdown Zhaohua Ding Megan Wadington Jennifer L. Hornberger Bruce M. Damon

Diffusion-tensor MRI (DT-MRI) offers great potential for understanding structure-function relationships in human skeletal muscles. The purposes of this study were to demonstrate the feasibility of using in vivo human DT-MRI fiber tracking data for making pennation angle measurements and to test the hypothesis that heterogeneity in the orientation of the tibialis anterior (TA) muscle’s aponeuros...

ژورنال: مجله دندانپزشکی 2013
ایزدی, ظفر مهدوی , جلالیان, عزت‌الله , سالاری, بهزاد , سالاری, محمد حسن , شیرازی, مهدی , صفایی, تهمینه , عظیم‌زاد, شیما ,

  Background and Aims : According to the common application of non-metal prefabricated posts in dentistry and lack of enough information about the stress distribution in the root canal walls by these posts, this study was performed to compare the effect of two simple taper and double taper posts on the stress distribution on root canal walls by photo elastic method .   Materials and Methods: Th...

Journal: :Journal of applied physiology 2007
Drew A Lansdown Zhaohua Ding Megan Wadington Jennifer L Hornberger Bruce M Damon

Diffusion-tensor magnetic resonance imaging (DT-MRI) offers great potential for understanding structure-function relationships in human skeletal muscles. The purposes of this study were to demonstrate the feasibility of using in vivo human DT-MRI fiber tracking data for making pennation angle measurements and to test the hypothesis that heterogeneity in the orientation of the tibialis anterior ...

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