نتایج جستجو برای: fiber orientation

تعداد نتایج: 230379  

Journal: :Science 2012
Van J Wedeen Douglas L Rosene Ruopeng Wang Guangping Dai Farzad Mortazavi Patric Hagmann Jon H Kaas Wen-Yih I Tseng

In response to Catani et al., we show that corticospinal pathways adhere via sharp turns to two local grid orientations; that our studies have three times the diffusion resolution of those compared; and that the noted technical concerns, including crossing angles, do not challenge the evidence of mathematically specific geometric structure. Thus, the geometric thesis gives the best account of t...

Journal: :Dental materials journal 2012
Sufyan Garoushi Muhammad Kaleem Akikazu Shinya Pekka K Vallittu Julian D Satterthwaite David C Watts Lippo V J Lassila

The purpose of this study was to investigate the reinforcing effect of short E-glass fiber fillers oriented in different directions on composite resin under static and dynamic loading. Experimental short fiber-reinforced composite resin (FC) was prepared by mixing 22.5 wt% of short E-glass fibers, 22.5 wt% of resin, and 55 wt% of silane-treated silica fillers. Three groups of specimens (n=5) we...

2014
Xiaohao Xu Chang Cheng Hongbao Xin Hongxiang Lei Baojun Li

We report a strategy for realizing precise orientation of single silver nanowire using two fiber probes. By launching a laser of 980 nm wavelength into the two fibers, single silver nanowire with a diameter of 600 nm and a length of 6.5 μm suspended in water was trapped and rotated by optical torque resulting from its interaction with optical fields outputted from the fiber probes. Angular orie...

2016
Tingting Yang Xueguang Qiao Qiangzhou Rong Weijia Bao

An orientation-dependent displacement sensor based on grating inscription over a fiber core and inner cladding has been demonstrated. The device comprises a short piece of multi-cladding fiber sandwiched between two standard single-mode fibers (SMFs). The grating structure is fabricated by a femtosecond laser side-illumination technique. Two well-defined resonances are achieved by the downstrea...

Alireza Tabarsa SeyedJassem Hosseini

In this study the performance of clay nano-particles on the soil reinforced with Polypropylene fibers (PP-fiber) has been investigated. Also a series of investigations concerning the effect of random orientation of fibers on the engineering behaviour of soil were conducted. Soil mixtures were modified with varying percentages of nanoclay and Fibers. Unconfined compressive strength (UCS), Compac...

2016
Christopher T Nguyen James Dawkins Elizabeth M Tunnicliffe Xiaoming Bi Matthew D Robson Debiao Li Eduardo Marbán

Background Diffusion-Tensor cardiovascular magnetic resonance (DT-CMR) is capable of mapping myocardial fiber orientation [1,2]. It has been demonstrated in myocardial infarction (MI) murine models that DT-CMR can identify the effects of stem cell therapy on myocardial fiber orientation [3]. However, it remains to be seen if this recent work is translatable to large animal and clinical studies....

Journal: :Biomedical optics express 2015
Ning-Jiun Jan Jonathan L Grimm Huong Tran Kira L Lathrop Gadi Wollstein Richard A Bilonick Hiroshi Ishikawa Larry Kagemann Joel S Schuman Ian A Sigal

Characterizing the collagen fiber orientation and organization in the eye is necessary for a complete understanding of ocular biomechanics. In this study, we assess the performance of polarized light microscopy to determine collagen fiber orientation of ocular tissues. Our results demonstrate that the method provides objective, accurate, repeatable and robust data on fiber orientation with µm-s...

2016
Michael SCHÖBERL Koray KASNAKLI Arne NOWAK

Carbon Fiber Reinforced Plastics (CFRP) are increasingly popular for lightweight but strong components, for example in aircraft or automotive applications. These materials come with the advantage of a large design space of the resulting material properties. A structural component can be tailor made for a specific load while minimizing the total weight of the component. However, this requires a ...

Journal: :Journal of biomedical optics 2012
Christina M Ambrosi Vadim V Fedorov Richard B Schuessler Andrew M Rollins Igor R Efimov

The atrial pacemaker complex is responsible for the initiation and early propagation of cardiac impulses. Optical coherence tomography (OCT), a nondestructive imaging modality with spatial resolutions of ∼1 to 15 μm, can be used to identify unique fiber orientation patterns in this region of the heart. Functionally characterized canine sinoatrial nodes (SAN) (n=7) were imaged using OCT up to ∼1...

Journal: :Cardiovascular research 1998
A D McCulloch D Sung J M Wilson R S Pavelec J H Omens

OBJECTIVE The sensitive relationship between regional myocardial perfusion and local systolic deformation during acute myocardial ischemia is not independent of the transmural location or segment orientation. The aim of this study was to determine the effects of fiber orientation and transmural location on the relationships between regional myocardial flow and three-dimensional systolic wall st...

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