نتایج جستجو برای: structure of fibers

تعداد نتایج: 21226473  

Journal: :journal of the structural engineering and geotechnics 0
n shamskia assistant professor, department of civil engineering, islamic azad university, qazvin branch, qazvin, iran

there is a worldwide interest in using fibers of different types in concrete mixtures. in this regard, as the use of pet fibers has gradually increased during the last decade, this study aims to investigate the effects of pet fibers on the mechanical properties of hardened concrete and the workability of fresh concrete. to this end, different contents of pet fibers (pc= %0, %0.5, %1 and %1.5) a...

Journal: :Journal of applied physiology 1972
P D Gollnick R B Armstrong C W Saubert K Piehl B Saltin

GOLLNICK, P. D., R. B. ARMSTRONG, C. W. SAUBERT IV, K. PIEHL, AND B. SALTIN. Enzyme activity and Jiber composition in skeletal muscle of untrained and trained men. J. Appl. Physiol. 33(3): 3 12-3 19, 1972.-Succinate dehydrogenase (SDH) and phosphofructokinase (PFK) activities and the histochemical identification of fiber types and localization of oxidative activity were determined on biopsy sam...

Irregularities are inherent to virtually all fibers, including the conventional textile fibers, the high-performance brittle fibers and newly developed nano-fibers. These irregularities can fall into two main categories: dimensional or geometrical irregularity (external) and structural irregularity (internal). For natural fibers such as wool, diameter variation along fiber length is atypical ex...

Journal: :Archivum histologicum japonicum 1966

Journal: :Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan) 1997

H Mobasheri M Firouzi S Mousavidoust

Cell membrane has a critical and vital role in functioning and existence of nerve cells that form central nervous system (CNS) in mammals. Disruption of nerve membrane that normally occurs following an accident injuring spinal cord is known to be the major cause of paralysis. In most occasions, spinal cord injuries are not leading to complete cut in spinal cord fibers but are known to cause cru...

Journal: :علوم و تکنولوژی پلیمر 0
الهه مسایلی صدیقه برهانی

low temperature plasma technology is well established in surface modification of polymer materials on industrial scale. this method modifies surface properties of polymers without chemicals, manual work and reducing chemicals and energy consumption. in this study, low pressure plasma treatment was used to develop hydrophilic properties of polyethylene terephthalate (pet) fabrics. it was found t...

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