نتایج جستجو برای: silk

تعداد نتایج: 8743  

2016
Sigal Meirovitch Zvi Shtein Tal Ben-Shalom Shaul Lapidot Carmen Tamburu Xiao Hu Jonathan A. Kluge Uri Raviv David L. Kaplan Oded Shoseyov

The fabrication of cellulose-spider silk bio-nanocomposites comprised of cellulose nanocrystals (CNCs) and recombinant spider silk protein fused to a cellulose binding domain (CBD) is described. Silk-CBD successfully binds cellulose, and unlike recombinant silk alone, silk-CBD self-assembles into microfibrils even in the absence of CNCs. Silk-CBD-CNC composite sponges and films show changes in ...

ژورنال: گلجام 2015
احمدی, زهرا,

Persian silk rugs are the most intricate, and often most valuable ones among all hand-knotted carpets. Silk is luxurious, lightweight and soft. Additionally fineness of silk carpet is amazing. Then it is very important to improve its quality and useful life time. During its usage, a typical high quality Persian or Oriental silk rug is exposed to many water-based stains. Although there are now a...

Journal: :modares journal of medical sciences: pathobiology 2005
mohammad mehdi oloumi amin derakhshanfar atieh dabbaghian

purpose: since there have been some debates about using supa brand silk, this study was designed to elucidate the possible differences between supa and ethicon silk in suturing rat skin. materials & methods: this study was carried out on 60 female spragne-dawly albino rats. the animals were randomly assigned to two equal groups. in group one, 3/0 silk, supa product, and in group two, 3/0 ...

2012
Amol R. Padol K. Jayakumar K. Mohan

Silk is a natural polymer synthesized and secreted by specialized silk gland of the silk worm. Silk is evolved as an ideal biomaterial can provide functional insight into relationships between polymer science and molecular biology. Silk proteins can be recovered from the silk during the processing chain of textile manufacture. The important characteristic of silk, especially the biocompatibilit...

Journal: :The Journal of experimental biology 2009
Todd A Blackledge Cecilia Boutry Shing-Chung Wong Avinash Baji Ali Dhinojwala Vasav Sahni Ingi Agnarsson

Spider dragline silk has enormous potential for the development of biomimetic fibers that combine strength and elasticity in low density polymers. These applications necessitate understanding how silk reacts to different environmental conditions. For instance, spider dragline silk ;supercontracts' in high humidity. During supercontraction, unrestrained dragline silk contracts up to 50% of its o...

The domesticated silkworm, Bombyx mori Linn., a lepidopteran molecular model and an important economic insect that are emerging as an ideal molecular genetic resource for solving a broad range of biological problems. The silkworm, B. mori produces massive amount of silk proteins during the final stage of larval development. These proteins are stored in the middle silk gland and they are dischar...

Mirmohammadi, S.Hesam, Mogharehabed, Ahmad,

Comparison of the use of silk sutures and cyanoacrylate tissue glue after periodontal flaps in patients with moderate periodontitis Dr. A. Mogharehabed* - Dr. SH. Mirmohammadi** *- Assistant Professor of Periodontics Dept. - Faculty of Dentistry – Isfahan University of Medical Sciences. **- Dentist. Background and Aim: The use of silk suturing materials and cyanoacrylate tissue glue are common ...

2011
Cecilia Boutry Milan Řezáč Todd Alan Blackledge

Spider major ampullate silk is a high-performance biomaterial that has received much attention. However, most studies ignore plasticity in silk properties. A better understanding of silk plasticity could clarify the relative importance of chemical composition versus processing of silk dope for silk properties. It could also provide insight into how control of silk properties relates to spider e...

Journal: :Soft matter 2015
Keiji Numata Hiroyasu Masunaga Takaaki Hikima Sono Sasaki Kazuhide Sekiyama Masaki Takata

β-Sheet crystals play an important role in determining the stiffness, strength, and optical properties of silk and in the exhibition of silk-type-specific functions. It is important to elucidate the structural changes that occur during the stretching of silk fibres to understand the functions of different types of fibres. Herein, we elucidate the initial crystallisation behaviour of silk molecu...

2013
Narendra Reddy Yiqi Yang

This paper shows that silk fibers produced by cecropia (Hyalophora cecropia) have similar tensile properties but different amino acid composition than that of mulberry (Bombyx mori) silk. The cecropia fibers are also much finer and have better strength and modulus than tasar silk, the most common non-mulberry silk. Cecropia is one of the largest silk producing moths and has similar lifecycle to...

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