نتایج جستجو برای: mesh electrospinning

تعداد نتایج: 48005  

2011
Yee-Shuan Lee

The use of biomaterials processed by the electrospinning technique has gained considerable interest for neural tissue engineering applications. The tissue engineering strategy is to facilitate the regrowth of nerves by combining an appropriate cell type with the electrospun scaffold. Electrospinning can generate fibrous meshes having fiber diameter dimensions at the nanoscale and these fibers c...

2016
Azin Jahangiri Khosro Adibkia

During recent years, nanoscaled materials have gained much attention because of their applications in the field of pharmaceutical and biomedical sciences. Electrospinning/electrospraying, as simple, effective and single-step methods, are used in the preparation of nanostructured materials (nanofibers and nanobeads). They offer an opportunity for direct encapsulation of the different types of dr...

2010
Mohammad Ziabari Vahid Mottaghitalab Akbar Khodaparast Haghi

−Precise control of fiber diameter during electrospinning is very crucial for many applications. A systematic and quantitative study on the effects of processing variables enables us to control the properties of electrospun nanofibers. In this contribution, response surface methodology (RSM) was employed to quantitatively investigate the simultaneous effects of four of the most important parame...

Journal: :Science 2006
Matthew G McKee John M Layman Matthew P Cashion Timothy E Long

Nonwoven fibrous membranes were formed from electrospinning lecithin solutions in a single processing step. As the concentration of lecithin increased, the micellar morphology evolved from spherical to cylindrical, and at higher concentrations the cylindrical micelles overlapped and entangled in a fashion similar to polymers in semi-dilute or concentrated solutions. At concentrations above the ...

Journal: :nanomedicine journal 0
esmaeil mirzaei department of medical nanotechnology, school of advanced medical technologies, tehran university of medicalsciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) reza faridi-majidi department of medical nanotechnology, school of advanced medical technologies, tehran university of medicalsciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) mohammad ali shokrgozar national cell bank of iran, pasteur institute of iran, tehran, iranسازمان اصلی تایید شده: انستیتو پاستور ایران (pasteur institute of iran) farnoush asghari paskiabi department of medical nanotechnology, school of advanced medical technologies, tehran university of medicalsciences, tehran, iranسازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences)

objective(s): to improve water stability of electrospun chitosan/ polyethylene oxide (peo) nanofibers, genipin, a biocompatible and nontoxic agent, was used to crosslink chitosan based nanofibers.  materials and methods: different amounts of genipin were added to the chitosan/peo solutions, chitosan/peo weight ratio 90/10 in 80 % acetic acid, and the solutions were then electrospun to form nano...

Journal: :novelty in biomedicine 0
reza tavakoli-darestani department of orthopedic surgery, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran gholamhossein kazemian department of orthopedic surgery, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran mohammad emami department of orthopedic surgery, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran amin kamrani-rad department of orthopedic surgery, faculty of medicine, shahid beheshti university of medical sciences, tehran, iran

please cite this article as : tavakoli-darestani r, kazemian gh, emami m, kamrani-rad a. poly (lactide-co-glycolide) nanofibers coated with collagen and nano-hydroxyapatite for bone tissue engineering. novel biomed 2013;1:8-15. background: a combination of polymeric nanofibrous scaffold and bioactive materials is potentially useful in bone regeneration applications. materials and methods: in th...

Journal: :international journal of nano dimension 0
r. dashtbani m.sc. student of pulp & paper industry, department of wood & paper engineering, gorgan university of agriculture science & natural resources, gorgan, iran. e. afra associate professor of pulp & paper technology, department of wood & paper engineering, gorgan university of agriculture science & natural resources, gorgan, iran.

one of the main issues of nanotechnology is producing materials with new properties. nanotechnology, as a powerful tool, has the ability to create evolution in the agricultural system and food–medicinal industries across the world. producing a high-performance material from reclaimed cellulose material will increase motivation to recycle these materials at all phases of paper production and rem...

Journal: :علوم و تکنولوژی پلیمر 0
مهدی نوری

electrically conducting nanofiber mats of polyaniline/copolyacrylonitrile (pani/ pan) blend in nmp were successfully fabricated using electrospinning technique. morphology and diameter of the nanofibers were studied by scanning electron microscope. structural characteristics of the electrospun nanofibers were examined using differential scanning calorimetry, fourier transform infrared spectrosc...

Journal: :علوم و تکنولوژی پلیمر 0
فرزاد دبیریان سید عبدالکریم حسینی راوندی

the main purpose of this study is to introduce a new method for nanofibers by bulk layer production. in the present method the effect of some parameters including take-up velocity, applied voltage, polymer solution concentration on density of produced layers is investigated. the compression characteristic of nanofiber layers produced under optimum electrospinning is also investigated. it was sh...

2015
Paweł Nakielski Sylwia Pawłowska Filippo Pierini Wioletta Liwińska Patryk Hejduk Krzysztof Zembrzycki Ewelina Zabost Tomasz A. Kowalewski Adam J. Engler

Recent biomedical hydrogels applications require the development of nanostructures with controlled diameter and adjustable mechanical properties. Here we present a technique for the production of flexible nanofilaments to be used as drug carriers or in microfluidics, with deformability and elasticity resembling those of long DNA chains. The fabrication method is based on the core-shell electros...

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