نتایج جستجو برای: nanofiber

تعداد نتایج: 4098  

2017
Priscilla Romina De Gregorio Gabriela Michavila Lenise Ricciardi Muller Clarissa de Souza Borges María Fernanda Pomares Enilson Luiz Saccol de Sá Claudio Pereira Paula Andrea Vincent

Seed inoculation with plant growth promoting rhizobacteria (PGPR) is an ideal tool to supply the soil with a high density of beneficial microorganisms. However, maintaining viable microorganisms is a major problem during seed treatment and storage. In this work, an evaluation was made of the effect of bacterial immobilization in nanofibers on the stability (viability and maintenance of benefici...

2016
Nithinart Chitpong Scott M. Husson

An evaluation of the performance of polyelectrolyte-modified nanofiber membranes was undertaken to determine their efficacy in the rapid uptake and recovery of heavy metals from impaired waters. The membranes were prepared by grafting poly(acrylic acid) (PAA) and poly(itaconic acid) (PIA) to cellulose nanofiber mats. Performance measurements quantified the dynamic ion-exchange capacity for cadm...

Journal: :ACS applied materials & interfaces 2012
Fatma Kayaci Cagla Ozgit-Akgun Inci Donmez Necmi Biyikli Tamer Uyar

Polymer-inorganic core-shell nanofibers were produced by two-step approach; electrospinning and atomic layer deposition (ALD). First, nylon 6,6 (polymeric core) nanofibers were obtained by electrospinning, and then zinc oxide (ZnO) (inorganic shell) with precise thickness control was deposited onto electrospun nylon 6,6 nanofibers using ALD technique. The bead-free and uniform nylon 6,6 nanofib...

ج یو, ایل, حبیبی محرز, مجید, صدیق زاده, اصغر, فرهنگ دهقان, سمیه, منصورنیا, محمد علی, گلبابایی, فریده,

Introduction: Electrospun nanofibers are suitable option to synthesize filtering mats for nanoparticles. This study was aimed to fabricate polyurethane nanofiber mats through electrospinning process and to investigate the effect of different parameters such as packing density, face velocity and particle type on the filtration efficiency and quality factor of electrospun polyurethane nanofiber m...

2012
Ahmed A Elzatahry Abdullah M Al-Enizi Elsayed Ahmed Elsayed Rachel R Butorac Salem S Al-Deyab Mohammad AM Wadaan Alan H Cowley

This report concerns nanofiber composites that incorporate N-heterocyclic carbenes and the use of such composites for testing antimicrobial and antifungal activities. The nanofiber composites were produced by electrospinning mixtures of the gold chloride or gold acetate complexes of a bis(imino)acenaphthene (BIAN)-supported NHC with aqueous solutions of polyvinyl alcohol (PVA). The products wer...

2016
Burkley Delesdernier Patterson Luis A. Orozco Delesdernier Patterson Steven L. Rolston Gretchen K. Campbell

Title of thesis: TRANSMISSION SPECTRA OF RB ATOMS NEAR AN OPTICAL NANOFIBER. Burkley Delesdernier Patterson, Master of Science, 2016 Dissertation directed by: Professor Luis A. Orozco Department of Physics We present measurements of the transmission spectra of Rb atoms at 780 nm in the vicinity of a nanofiber. A uniform distribution of fixed atoms around a nanofiber should produce a spectrum th...

2014
Yong Cheol Shin Won Jun Yang Jong Ho Lee Jin-Woo Oh Tai Wan Kim Jong-Chul Park Suong-Hyu Hyon Dong-Wook Han

This study concentrates on the development of biodegradable nanofiber membranes with controlled drug release to ensure reduced tissue adhesion and accelerated healing. Nanofibers of poly(lactic-co-glycolic acid) (PLGA) loaded with epigallocatechin-3-O-gallate (EGCG), the most bioactive polyphenolic compound in green tea, were electrospun. The physicochemical and biomechanical properties of EGCG...

Journal: :Journal of biomedical materials research. Part A 2009
Wei Wang Soichiro Itoh Katsumi Konno Takeshi Kikkawa Shizuko Ichinose Katsuyoshi Sakai Tsuneo Ohkuma Kazuhiko Watabe

We have constructed a chitosan nonwoven nanofiber mesh tube consisting of oriented fibers by the electrospinning method. The efficacy of oriented nanofibers on Schwann cell alignment and positive effect of this tube on peripheral nerve regeneration were confirmed. The physical properties of the chitosan nanofiber mesh sheets prepared by electrospinning with or without fiber orientation were cha...

Journal: :Nanomedicine : nanotechnology, biology, and medicine 2013
Xiaoduo Zhan Mingyong Gao Yanwen Jiang Weiwei Zhang Wai Man Wong Qiuju Yuan Huanxing Su Xiaoning Kang Xiang Dai Wenying Zhang Jiasong Guo Wutian Wu

UNLABELLED Peripheral nerve injury still remains a refractory challenge for both clinical and basic researchers. A novel nanofiber conduit made of blood vessel and filled with amphiphilic hydrogel of self-assembling nanofiber scaffold (SAPNS) was implanted to repair a 10 mm nerve gap after sciatic nerve transection. Empty blood vessel conduit was implanted serving as control. Results showed tha...

Journal: :Journal of hazardous materials 2014
Akbar Esmaeili Ali Aghababai Beni

In this research, a novel fixed-bed reactor was designed with a nanofiber membrane composed of a polyvinyl alcohol (PVA)/chitosan nanofiber blend prepared using an electrospinning technique. The applied voltage, tip-collector distance, and solution flow rate of the electrospinning process were 18 kV, 14.5 cm, and 0.5 mL h(-1), respectively. Brunauer-Emmett-Teller (BET) theory, scanning electron...

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