نتایج جستجو برای: mechanical properties of stem

تعداد نتایج: 21246361  

Journal: :پزشکی قانونی 0
علیرضا کریمی alireza karimi science and technology university of iranدانشگاه علم و صنعت ایرانسازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (iran university of science and technology) احمد شجاعی ahmad shojaei baghiatallah university of medical sciencesدانشگاه علوم پزشکی بقیه اله مهدی نویدبخش mehdi navidbakhsh science & technology university of iranدانشکده مکانیک دانشگاه علم و صنعتسازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (iran university of science and technology) برهان بیگ زاده borhan beigzadeh science & technology university of iranدانشکده مکانیک دانشگاه علم و صنعتسازمان اصلی تایید شده: دانشگاه علم و صنعت ایران (iran university of science and technology) شهاب فقیهی shahab faghihi national institute of genetic engineering & biotechnologyپژوهشگاه ملی مهندسی ژنتیک و زیست فناوریسازمان اصلی تایید شده: پژوهشگاه ملی مهندسی ژنتیک و زیست فناوری

background: characterizing the mechanical properties of brain tissue is deemed important for developing a comprehensive knowledge of the mechanisms underlying brain diseases. mechanical properties of very soft tissues, such as brain until recently have been attracted the attention of researchers because these tissues do not tolerate mechanical loads. the mechanical properties of brain tissue, h...

In this study, thermo-mechanical stability of two-pass constrained groove pressing (CGP) AA1050 sheets towards friction stir welding (FSW) employing hybrid powder (%50vol. micrometric graphite powder+%50vol. α-Al2O3 nanoparticles) was investigated by examining its microstructural evolutions and mechanical properties. FSW was carried out via different process variables in order to reach the high...

2012
Luke MacQueen Oleg Chebotarev Michelle Chen Jenna Usprech Yu Sun Craig A. Simmons

This paper reports a microfabricated mechanical testing platform, its use for biomaterial stiffness measurements, and its preparation for dynamic mechanical stimulation of arrayed tissue samples. We present measured structural and mechanical properties of hydrogel materials and demonstrate that human mesenchymal stem cells (hMSC) can be cultured in 3D gels within the platform. By integrating mi...

Fatemeh Zarei Mohammad Sadegh Hajitarverdi Mojtaba Shamsipur, Mostafa Yazdimamaghani Narmin Bahrami Adeh

In this paper the influence of two different sizes of silica particles (micro-silica and nano-silica) was studied on mechanical properties of sulfur and sulfur composite. To improve the structural properties, sulfur was plasticized using dicyclopentadiene (DCPD) and methyl styrene (MSt). Plasticized sulfur composite was prepared by melt blending of plasticized sulfur and silica particles. T...

2017
Cloé Paul-Victor Sara Dalle Vacche Federica Sordo Siegfried Fink Thomas Speck Véronique Michaud Olga Speck

As plant fibres are increasingly used in technical textiles and their composites, underlying principles of wound healing in living plant fibres are relevant to product quality, and provide inspiration for biomimetic healing in synthetic materials. In this work, two Linum usitatissimum cultivars differing in their stem mechanical properties, cv. Eden (stems resistant to lodging) and cv. Drakkar ...

This review discusses recent developments in the field of nanosized biomaterials and their use in tissue regeneration approaches. The aim is to provide an overview of the research focused on nanoparticle-based strategies to stimulate regeneration. In particular, nanoparticles improve the regenerative capabilities of biomaterials offering ways to control surface and mechanical properties. Moreov...

A. Shafyei, H. Salimijazi M. Akbarzadeh

In this study, physical vapor deposition (PVD) Ti-Cr-N coatings were deposited at two different temperatures 100 and 400ºC on hardened and tempered tool steel substrates. The influence of the applied deposition temperature on the physical and mechanical properties of coatings such as roughness, thickness, phase composition, hardness and Young’s modulus were evaluated. Phase compositions were st...

2015
Yarmilla Reinprecht Muhammad Arif Leonardo C. Simon K. Peter Pauls Hon-Ming Lam

Plant fibers can be used to produce composite materials for automobile parts, thus reducing plastic used in their manufacture, overall vehicle weight and fuel consumption when they replace mineral fillers and glass fibers. Soybean stem residues are, potentially, significant sources of inexpensive, renewable and biodegradable natural fibers, but are not curretly used for biocomposite production ...

A Dehghanifard, A Salimi, F Rahim, M Farshdousti Hagh, M Ghollasi, M Soleimani, N Saki, Sh Alizadeh,

Stem cell research has obtained much prominence in recent years for its therapeutic potential in dealing with serious diseases, many of which are essentially incurable by routine therapies. Mesenchymal stem cells with pluripotency and immunomodulatory properties are suitable candidates for tissue engineering and regenerative medicine. Today, nanofibrous scaffolds are widely used in tissue en...

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2012
s. mohammadi* f. abdi

in the presented work, sulfur concrete and rubber were used for producing functionally graded materials (fgm). the physical and mechanical properties of sulfur concrete and rubber were changed continuously across the thickness. on one side, there was just rubber and, on the other, there was pure sulfur; the properties of each substance were moved to reach another. this kind of material was cons...

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