نتایج جستجو برای: fibers

تعداد نتایج: 70489  

Hashemi, Sh., Hatami, Sh., Keshavarzi, R. ,

Plates made of laminated composite materials with variable stiffness can have wide applications in various branches of engineering due to such advantages as high strength /stiffness to weight ratio. In these composites, curved fibers are used to reinforce each lamina instead of the straight fibers. In this paper, the application of finite strip method for the buckling analysis of moderately thi...

Journal: :iranian journal of neurology 0
zahra alizadeh department of biology, faculty of sciences, ferdowsi university of mashhad, mashhad, iran. masoud fereidoni department of biology, faculty of sciences, ferdowsi university of mashhad, mashhad, iran. morteza behnam-rassouli department of biology, faculty of sciences, ferdowsi university of mashhad, mashhad, iran. shirin hosseini department of biology, faculty of sciences, ferdowsi university of mashhad, mashhad, iran.

background: usual dosage  of morphine  (10 mg/kg) induces  analgesia  and ultra-low dose (uld) of morphine (1 μg/kg); hyperalgesia, and  c-fibers are also bearing  μ- opioid receptors; here the importance  of c-fibers on pain and  morphine   induced  analgesia/hyperalgesia  is questioned   and  investigated    using   pain   evaluation methods and infant capsaicin treating  for c-fibers lesioni...

Journal: :mathematics interdisciplinary research 0
saeed olyaee shahid rajaee teacher training university mahmood seifouri shahid rajaee teacher training university ali nikoosohbat shahid rajaee teacher training university

waveguides with low confinement loss, low chromatic dispersion, and low nonlinear effects are used in optical communication systems. optical fibers can also be employed in such systems. besides optical fibers, photonic crystal fibers are also highly suitable transmission media for optical communication systems. in this paper, we introduce two new designs of index-guiding photonic crystal fiber ...

Journal: :journal of sciences, islamic republic of iran 2013
s. pirsa

determination of 1, 1-dimethylhydrazine (dmh) in air is carried out by spectrophotometry, gc or hplc analysis, but in this study dmh was analyzed by a gas sensor based on nanostructure conducting polyaniline. determination of dmh has been done very simplely and quickly in recent work. electrically conductive fibers have been prepared by polymerization of aniline on surfaces of commercial polyme...

Journal: :Japanese Journal of Pharmacology 1981

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2012
majid abdouss homayon ahmad panahi forozan ghiabi, elham moniri, ahmad mousavi shoushtari

: a new fibrous adsorbent was prepared by grafting acrylic acid /acryl amide (aa/aam) co-monomers onto poly(ethylene terephtalat) (pet) fibers. the resulting sorbent has been characterized by fourier transform infrared spectroscopy (ft-ir), thermo gravimetric analysis (tga), scanning electron microscopy (sem) and elemental analysis and studied for the preconcentration and determination of trace...

Journal: :international journal of nano dimension 0
a. kardam department of chemistry, faculty of science, dayalbagh educational institute, agra 282110, india. k. rohit raj department of chemistry, faculty of science, dayalbagh educational institute, agra 282110, india. sh. srivastava department of chemistry, faculty of science, dayalbagh educational institute, agra 282110, india.

the increased surface area-to-volume ratio of nanoparticles, quantum size effects and the ability to tune surface properties through molecular modification make nanostructures ideal for environmental remediation. the present piece of work reports the preparation and characterization of nano cellulosic fibers (ncfs) with further polymeric reinforcement using vinyl sulphonic acid for the remediat...

Journal: :international journal of civil engineering 0
c. gümüşer civil eng. genaral directorate oh highways, sivas, tur a. şenol cumhuriyet university faculty of engineering. civil engineering department sivas/turkey

the total coal and lignite consumption of the thermic power plants in turkey is approximately 55 million tons and nearly 15 million tons of fly ash is produced. the remarkable increase in the production of fly ash and its disposal in an environmentally friendly manner is increasingly becoming a matter of global concern. studies for the utilization of fly ash in turkey are necessary to reduce en...

Journal: :علوم و تکنولوژی پلیمر 0
مهدی نوری محمد حقیقت کیش علی اکبر انتظامی

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