نتایج جستجو برای: crosslinking

تعداد نتایج: 6998  

2015
Xiaokun Wang Yong Huang Sabah Jastaneiah Shoumyo Majumdar Jin U. Kang Samuel C. Yiu Walter Stark Jennifer H. Elisseeff Sanjoy Bhattacharya

Collagen crosslinking is a relatively new treatment for structural disorders of corneal ectasia, such as keratoconus. However, there is a lack of animal models of keratoconus, which has been an obstacle for carefully analyzing the mechanisms of crosslinking and evaluating new therapies. In this study, we treated rabbit eyes with collagenase and chondroitinase enzymes to generate ex vivo corneal...

2013
Sanjay Kumar Awasthi Sunil Kumar Bajpai

The effect of gamma irradiation on micro-hardness of polymer blends of poly (ethyl methacrylate)(PEMA) and poly (ethylene oxide) (PEO) has been investigated to detect the radiation induced crosslinking. The blend system comprises a noncrystallizable polymer, PEMA and a crystallizable polymer, PEO. On irradiation, the overall hardness of the blend specimens for different dose levels infers occur...

Journal: :Bioprinting 2022

3D Bioprinting is a popular method of fabricating scaffolds for tissue engineering. While soft bioinks such as alginate are useful reproducing the softest tissues human body, it remains difficult to print objects out that cannot support their own weight. cryoprinting promising printing and creating highly porous However, crosslinking frozen before they thaw collapse challenge. Here we investiga...

2017
Jinghui Li Zhuo Chen Ahmad Umar Yang Liu Ying Shang Xiaokai Zhang Yao Wang

Crosslinking is an effective way to fabricate high-selective CO2 separation membranes because of its unique crosslinking framework. Thus, it is essentially significant to study the influence of crosslinking degree on the permeation selectivities of CO2. Herein, we report a successful and facile synthesis of a series of polyethylene oxide (PEO)-based diblock copolymers (BCP) incorporated with an...

2017
Mariya Zyablitskaya Anna Takaoka Emilia L. Munteanu Takayuki Nagasaki Stephen L. Trokel David C. Paik

Purpose Second harmonic generation signals (SHG) are emitted preferentially from collagenous tissue structures and have been used to evaluate photochemically-induced (CXL) crosslinking changes in the cornea. Since therapeutic tissue crosslinking (TXL) using sodium hydroxymethylglycinate (SMG) of the sclera is a potential treatment for high myopia, we explored the use of SHG microscopy to evalua...

2005
M. Madani M. M. Badawy

The influence of both electron beam irradiation and step-crosslinking process on the high abrasion furnace (HAF) carbon black loaded natural rubber (NR) vulcanizates are reported. With irradiation, a higher crosslinking density, ν, thermal conductivity, λ, glass transition temperature, Tg, and decreased specific heat capacity, Cp, have been observed for the irradiated materials as compared with...

2013
Géraldine Merle Filipoi Carmen Ioana Dan Eugen Demco Michel Saakes Seyed Schwan Hosseiny

Highly conductive and low vanadium permeable crosslinked sulfonated poly(ether ether ketone) (cSPEEK) membranes were prepared by electrophilic aromatic substitution for a Vanadium/Air Redox Flow Battery (Vanadium/Air-RFB) application. Membranes were synthesized from ethanol solution and crosslinked under different temperatures with 1,4-benzenedimethanol and ZnCl2 via the Friedel-Crafts crosslin...

Journal: :Biotechnology and bioengineering 2014
Michal Buch Yariv Wine Yael Dror Sonia Rosenheck Mario Lebendiker Rita Giordano Ricardo M F Leal Alexander N Popov Amihay Freeman Felix Frolow

The use of protein crystals as a source of nanoscale biotemplates has attracted growing interest in recent years owing to their inherent internal order. As these crystals are vulnerable to environmental changes, potential applications require their stabilization by chemical crosslinking. We have previously shown that such intermolecular chemical crosslinking reactions occurring within protein c...

2004
Nan Li

Chitosan, a natural polysaccharide, has increasingly been studied as an adsorbent for heavy metal removal in recent years. The amine groups in chitosan are generally known to be the main adsorption sites for heavy metal ions. However, due to the instability of chitosan in acidic solutions, chemical crosslinking has often been used to enhance the acidic resistance of the material. Since most of ...

2011
Hamed Mofeez Anwar Alaa M El-Danasoury Ayman Nasr Hashem

PURPOSE To report the use of corneal collagen crosslinking in the treatment of infective keratitis not responding to antimicrobial therapy. METHODS Two retrospective case reports of infective keratitis treated with corneal collagen crosslinking. RESULTS In both cases, corneal collagen crosslinking caused a rapid resolution of the infective keratitis, leaving residual stromal scarring. Due t...

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