نتایج جستجو برای: natural polymers
تعداد نتایج: 548621 فیلتر نتایج به سال:
Biomaterials are the main focuses of scientists’ efforts to develop new materials to replace or repair bone tissues [1]. Biomaterials are natural or synthetic materials which can interface with biological systems allowing the increase, repair or even the replacement of tissues and organs of the human body [2]. Within biomaterials, the polymers can be natural or synthetic as well. The main polym...
during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...
peripheral nerve injuries (pni) can lead to lifetime loss of function and disfigurement. different methods such as conventional allograft procedures and using of biological tubes have problems for damaged peripheral nerves reconstruction. designed scaffolds with natural and synthetic materials are now widely used in the reconstruction of damaged tissues. utilization of absorbable and non-absorb...
At present the pharmaceutical academia and industries are focusing on the use of natural materials and resources for development of pharmaceutical product. Due to advances in drug delivery technology, currently, excipients are included in novel dosage forms to fulfill specific functions. Various natural polymers are widely being studied as a potential carrier material for site specific drug del...
Last decade has been a witness of gradual transformation in the field of craniofacial and dental tissue engineering from synthetic implants and tissue grafts to biomimetic biomaterial scaffolds, and injectable hydrogels. Indeed, a vast variety of biomaterials is available e.g. natural or synthetic polymers, extracellular matrix, self-assembling systems, hydrogels, or bio-ceramics. Each material...
The upflow anaerobic sludge blanket (UASB) reactor has been used successfully treat a variety of wastewaters. The aim of this review is to synthesize and analyze information on how the process of granulation is affected by environmental and operational conditions in the reactor. The factors reviewed are strength of substrate, nutrients, multivalent cations and heavy metals, exocellular polymer,...
Objectives Production of effective tuberculosis (TB) vaccine is necessity. However, the development of new subunit vaccines is faced with concerns about their weak immunogenicity. To overcome such problems, polymers-based vaccine delivery systems have been proposed to be used via various routes. The purpose of this study was to determine the potential of polymeric particles as future vaccine de...
Floating matrix tablets of Cephalexin were prepared by using synthetic and natural polymers each in two different concentrations. The floating properties and in-vitro drug release properties were optimized and total 10 formulations were developed. The synthetic and natural polymers used were HPMC K4M, HPMC K15M and Guar Gum, Xanthan gum respectively. Each formulation consists of polymer in any ...
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