نتایج جستجو برای: aligned nanofibers

تعداد نتایج: 39929  

Journal: :nanomedicine journal 0
amir doustgani biotechnology group, chemical engineering department, tarbiat modares university, tehran, iranسازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university) ebrahim vasheghani-farahani biotechnology group, chemical engineering department, tarbiat modares university, tehran, iranسازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university) masoud soleimani department of hematology, faculty of medicine, tarbiat modares university, tehran, iranسازمان اصلی تایید شده: دانشگاه تربیت مدرس (tarbiat modares university)

aligned and random nanocomposite nanofibrous scaffolds were electrospun from polycaprolactone (pcl), poly (vinyl alcohol) (pva) and hydroxyapatite nanoparticles (nha). the morphology and mechanical characteristics of the nanofibers were evaluated using scanning electron microscopy and tensile testing, respectively. scanning electron microscopy revealed fibers with an average diameter of 123 ± 3...

Journal: Nanomedicine Journal 2013

Aligned and random nanocomposite nanofibrous scaffolds were electrospun from polycaprolactone (PCL), poly (vinyl alcohol) (PVA) and hydroxyapatite nanoparticles (nHA). The morphology and mechanical characteristics of the nanofibers were evaluated using scanning electron microscopy and tensile testing, respectively. Scanning electron microscopy revealed fibers with an average diameter of 123 ± 3...

Journal: :international journal of nanoscience and nanotechnology 2011
a. doustgani e. vasheghani-farahani m. soleimani s. hashemi-najafabadi

nanofibrous scaffolds produced by electrospinning have attracted much attention, recently. aligned and random nanofibrous scaffolds of poly (vinyl alcohol) (pva), poly (ε-caprolactone) (pcl) and nanohydroxyapatite  (nha) were fabricated by electrospinning method in this study. the composite nanofibrous scaffolds were subjected to detailed analysis. morphological investigations revealed that the...

A. Doustgani E. Vasheghani-Farahani M. Soleimani S. Hashemi-Najafabadi

Nanofibrous scaffolds produced by electrospinning have attracted much attention, recently. Aligned and random nanofibrous scaffolds of poly (vinyl alcohol) (PVA), poly (ε-caprolactone) (PCL) and nanohydroxyapatite  (nHA) were fabricated by electrospinning method in this study. The composite nanofibrous scaffolds were subjected to detailed analysis. Morphological investigations revealed that the...

2016
Jeong In Kim Tae In Hwang Ludwig Erik Aguilar Chan Hee Park Cheol Sang Kim

Scaffolds made of aligned nanofibers are favorable for nerve regeneration due to their superior nerve cell attachment and proliferation. However, it is challenging not only to produce a neat mat or a conduit form with aligned nanofibers but also to use these for surgical applications as a nerve guide conduit due to their insufficient mechanical strength. Furthermore, no studies have been report...

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

amodified technique is designed to prepare aligned nanofibers to challenge the existing limitations in collecting methods of nanofibers such as, thickness of collected layer, alignment and productivity of nanofibers. collecting and simultaneously heating of the aligned nanofibers were carried out by using a rotating drum fixed on top of syringe needles and applying hot air flow. this electrospi...

Journal: :Biochemical and biophysical research communications 2016
Mohammad Nahid Andalib Jeong Soon Lee Ligyeom Ha Yuris Dzenis Jung Yul Lim

While electrospun nanofibers have demonstrated the potential for novel tissue engineering scaffolds, very little is known about the molecular mechanism of how cells sense and adapt to nanofibers. Here, we revealed the role of focal adhesion kinase (FAK), one of the key molecular sensors in the focal adhesion complex, in regulating mesenchymal stem cell (MSC) shaping on nanofibers. We produced u...

Journal: :علوم و تکنولوژی پلیمر 0
مهرداد خام فروش فرزاد دبیریان سروه ماجدی

anew and effective electrospinning method has been developed for producing aligned polymer nanofibers. the conventional electrospinning technique has been modified to fabricate nanofibers as uniaxially aligned array. the key to the success of this technique is the creation of a rotating jet by using a cylindrical collector in which the needle tip is located at its center. the unique advantage o...

2014
Jingwei Xie Matthew R. MacEwan Wenying Liu Nithya Jesuraj Xiaoran Li Daniel Hunter Younan Xia

Compared to the nerve guidance conduits (NGCs) constructed from a single layer of aligned nanofibers, bilayer NGCs with random and aligned nanofibers in the outer and inner layers are more robust and tear-resistant during surgical procedures thanks to an isotropic mechanical property provided by the random nanofibers. However, it remains unclear whether the random nanofibers will interfere with...

Journal: :iranian journal of basic medical sciences 0
raheleh safaeijavan department of biology, science and research branch, islamic azad university, tehran, iran masoud soleimani department of hematology, faculty of medical science, tarbiat modares university, tehran, iran adeleh divsalar department of biological sciences, kharazmi university, tehran, iran akram eidi department of biology, science and research branch, islamic azad university, tehran, iran abdolreza ardeshirylajimi department of biology, science and research branch, islamic azad university, tehran, iran stem cell biology department, stem cell technology research center, tehran, iran

objective(s):cardiomyocytes have small potentials for renovation and proliferation in adult life. the most challenging goal in the field of cardiovascular tissue engineering is the creation of an engineered heart muscle. tissue engineering with a combination of stem cells and nanofibrous scaffolds has attracted interest with regard to cardiomyocyte creation applications. human adipose-derived s...

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