نتایج جستجو برای: polylactic co
تعداد نتایج: 334934 فیلتر نتایج به سال:
background: drug nano-carriers are one of the most important tools for targeted cancer therapy so that undesired side effects of chemotherapy drugs are minimized. in this area, the use of ultrasound can be helpful in controlling drug release from nanoparticles to achieve higher treatment efficiency. objective: here, we studies the effects of ultrasound irradiation on the release profile of 5-fl...
Background: Today, with the development of human life and the overwhelming fall of antibiotics and uncontrolled bacterial resistance, the need to find materials with antimicrobial effects is felt more than ever. Nanotechnology has created a new opportunity to investigate the antimicrobial effects of nanomaterials. Materials & Methods: In this study, using hydrothermal and microwave auxiliary c...
Abstract Polylactic acid (PLA) and poly(3-hydroxybutyrate- co -4-hydroxybutyrate) (P(3HB- -4HB)) nanofibers were prepared by melt extrusion of immiscible blends PLA/polyvinyl alcohol (PVA) P(3HB- -4HB)/PVA via in situ formation microfibrils during the process. The morphology after removal PVA with water was studied using scanning electron microscopy. intermolecular interactions Fourier-transfor...
Polylactic acid (PLA) is one of the most extensively studied biodegradable materials. PLA a versatile material with excellent bio-compatibility, bioabsorbability, biodegradability, and low toxicity. As an environmentally friendly polymer, favored by researchers has explored many commercial applications, playing important role in medicine industry to replace traditional petrochemical-based polym...
OBJECTIVE To examine the feasibility of a new method of laryngotracheal reconstruction (LTR) that uses a bioabsorbable plating system consisting of polylactic and polyglycolic acid and provides some advantages over currently used methods. DESIGN AND INTERVENTIONS Anterior subglottic stenosis was created in 10 beagles that then underwent LTR using an autologous costochondral graft. External la...
The conventional tissue engineering is based on seeding of macroporous scaffold on its surface ("top-down" approach). The main limitation is poor cell viability in the middle of the scaffold due to poor diffusion of oxygen and nutrients and insufficient vascularization. Layer-by-Layer (LBL) bioassembly is based on "bottom-up" approach, which considers assembly of small cellularized blocks. The ...
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