نتایج جستجو برای: structuring scaffolds
تعداد نتایج: 33157 فیلتر نتایج به سال:
objective:more similarity to in vivo medium may help to increase the proliferation and differentiation of cells at in vitro condition. the present study has investigated the effect of a dynamic mediumand nano hydroxyapatite (nha) presence on proliferation and differentiation of mesenchymal stem cells (mscs) to bone cells using electrospun polycaprolactone (pcl) scaffolds. methods: we prepared p...
This paper presents the scientific concerns and some results of the LiMITE – on the Assembly Line: Innovation, Work and Employment – project. Even considering the vast number of experimented industry production technologies, the classic assembly line has proved to be a structuring element within the frame of mass production, whereas known the difficulty to find practical alternative solutions. ...
Background: Although the presence of articular cartilage progenitor cells is already known, but due to lack of blood supply, its ability to heal is poor. In past, tissue engineering approaches has been mainly focused on the collection and culture of chondrocyte cells on biodegradable scaffolds such as polyglycolic acid in vitro and their autologous transplantation. Recently, due to the difficul...
Background and purpose: Natural bone is a combination of polymer and biological apatite, therefore, the composite scaffolds made of polymers and bioactive ceramics have found wide applications in bone tissue engineering studies. Among various polymers, the poly-L-lactic acid (PLLA) and hydroxyapatite (HA) have attracted much attention due to their optimal properties. In this study, using PLLA p...
Background: This study addressed the development of biodegradable and biocompatible scaffolds with enhanced biomechanical characteristics. The biocompatibility and the cationic nature of chitosan (CTS) make it more effective as a bone grafting material. Methods: The hydroxyapatite nanoparticles (nHA) were synthesized by hydrothermal method, and bioglass (nBG) (50% SiO2-45% CaO-5% P2O5) was synt...
In this paper a hyperconnectivity class that tries to address the leakage problem typical of connected filters is used. It shows similarities with the theory of viscous lattices. A novel algorithm to perform attribute filtering of viscoushyperconnected components is proposed. First, the max-tree of the image eroded by a structuring element is built: it represents the hierarchy of the cores of t...
The morphological skeleton and morphological shape decomposition (MSD) are the two popular approaches for morphological shape representation. Each method represents an object as the union of a number of components, where each component is given by a locus of points dilated by a speciied structuring element homothetic. Anecdotal evidence suggests that for many objects, an MSD-based representatio...
Abstract Characterizing the nature of genetic differentiation among individuals and populations its distribution across genome is increasingly important to inform both conservation management exploited species. Atlantic Halibut (Hippoglossus hippoglossus) an ecologically commercially fish species, yet knowledge population structure genomic diversity in this species remains lacking. Here, we use...
currently autografts are gold standards for craniomaxillofacial bone regeneration. but autografts have some limitations. bone tissue engineering has been introduced to overcome these limitations. it consist three components: stem cells, growth factor, and scaffold. scaffold provides an environment for bone growth and simplifies cell adhesion, differentiation and proliferation. in this review, a...
Background: The aim of this study was to fabricate the poly caprolactone (PCL) aligned nanofiber scaffold and to evaluate the survival, adhesion, proliferation, and differentiation of rat hair follicle stem cells (HFSC) in the graft material using electrospun PCL nanofiber scaffold for tissue engineering applications. Methods: The bulge region of rat whisker was isolated and cultured in DMEM: n...
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