نتایج جستجو برای: polyblend fibers

تعداد نتایج: 70519  

2014
Fatemeh Ajalloueian Hossein Tavanai Jöns Hilborn Olivier Donzel-Gargand Klaus Leifer Abeni Wickham Ayyoob Arpanaei

Novel nanofibers from blends of polylactic-co-glycolic acid (PLGA) and chitosan have been produced through an emulsion electrospinning process. The spinning solution employed polyvinyl alcohol (PVA) as the emulsifier. PVA was extracted from the electrospun nanofibers, resulting in a final scaffold consisting of a blend of PLGA and chitosan. The fraction of chitosan in the final electrospun mat ...

Journal: :Biochemical and biophysical research communications 2011
Smitha Mathews Ramesh Bhonde Pawan Kumar Gupta Satish Totey

The biomimetic approach mimicking in vivo micro environment is the key for developing functional tissue engineered constructs. In this study, we used a tripolymer combination consisting of a natural polymer, chitosan and two extracellular matrix components; collagen type 1 and hyaluronic acid to coat tissue culture plate to evaluate their effect on osteogenic differentiation of human bone marro...

Journal: :journal of structural engineering and geo-techniques 2011
iman mehdipour nicolas ali libre mohammad shekarchia

the sustainability of the built environment is increasingly coming to the forefront of infrastructure design and maintenance decisions. to address this, development of a new class of more sustainable cement-based materials is needed. fiber reinforced self-consolidating mortar (frscm) was developed by optimizing the micromechanical parameters, which control composite properties in the hardened s...

Gila Behzadi, Mehdi Mehdizadeh, Parichehr Pasbakhsh,

Background: Mediodorsal (MD) thalamic nucleus, which is considered to take place between extra pyramidal and limbic feedback circuit, receives projective fibers from ventrolateral neurons of reticular part of substantia nigra (SNr). In order to better understand the influence and chemical reaction of these fibers upon MD nucleus, the morphology and synaptology of them were examined in the prese...

Journal: :international journal of advanced design and manufacturing technology 0
mahmoud asadzadeh s.mohamad reza khalili reza eslami farsani siamak rafizadeh

in this research work, the effects of natural fibers such as date palm fiber (df) and jute fiber (jf) on bending properties of polypropylene (pp)/ ethylene–propylene–diene–monomer (epdm) thermoplastic elastomers are investigated. for this purpose, the date palm and jute fibers at five levels of fiber weight fractions (0, 5, 10, 20 and 30 wt. %) are utilized during composite fabrication. maleic ...

Journal: :Journal of the Japan Society for Composite Materials 1992

ژورنال: سلامت کار ایران 2012
ماری اریاد, 1- حسین, کاکویی, 2- حسین,

  Background and aims : Asbestos minerals are divided into two main groups including serpentine and amphiboles and each has one or more subgroups. These minerals have been used in industrial products such as cement-asbestos sheet and pipe, brake shoe, clutch and insulation materials. Occupational and non - occupational exposures by this carcinogenic material have caused to develop several metho...

Journal: :مهندسی بیوسیستم ایران 0
اعظم زارع میرک آباد کارشناسی ارشد، دانشگاه شهید باهنر احمد غضنفری مقدم دانشیار، دانشگاه شهید باهنر

the use of plant fibers in producing different industrial products has attracted the attention of many researchers. plant fibers, in comparison with industrial ones, are degraded faster in nature and are more environments friendly. one of the major conventional uses of plant fibers is the production of traditional ropes which are subjected to tensile forces. however, the traditional ropes bear ...

Journal: :جنگل و فرآورده های چوب 0
حسین جلالی ترشیزی عضو هیات علمی دانشگاه شهید بهشتی فریبا خلیلی نفت چالی دانش آموخته کارشناسی ارشد حسین کرمانیان عضو هیات علمی دانشگاه شهید بهشتی

by increasing demands on paper products and shortage of fiber resources, various strategies were introduced to meet the requirements. in this context, application of mineral fibers is a novel and growing approach. this study was aimed to reduce the plant fibers by application of, mineral fiber in the papermaking system. application of 0, 10, 20, and 30% loadings of rock wool mineral fibers (rwm...

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