نتایج جستجو برای: controlled release

تعداد نتایج: 581957  

Journal: :Journal of agricultural and food chemistry 2017
Peng Wen Yan Wen Min-Hua Zong Robert J Linhardt Hong Wu

Electrospinning is a simple and versatile encapsulation technology. Since electrospinning does not involve severe conditions of temperature or pressure or the use of harsh chemicals, it has great potential for effectively entrapping and delivering bioactive compounds. Recently, electrospinning has been used in the food industry to encapsulate bioactive compounds into different biopolymers (carb...

        Controlled release swellable tablets of phenobarbital were prepared by a simple direct compression process using hydroxypropyl methylcellulose (HPMC) as the matrix former. The effects of the viscosity grades of HPMC and HPMC/lactose ratio and ethylcellulose (EC)/sodium carboxymethylcellulose (NaCMC) and their concentrations on the release behavior of phenobarbital from HPMC matrices wer...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده علوم پایه 1389

موضوع: سنتزوشناسایی پلیمرحامل 4 داروی مختلف و بررسی رهاسازی دارو از آن هدف: افزایش نیمه عمر داروها و کاهش اثرات جانبی دارو روش: آزادسازی کنترل شده دارو، یکی از مهم ترین روشها برای افزایش اثرات درمانی و کاهش اثرات جانبی دارو می باشد که درسالهای اخیر مورد توجه گروههای تحقیقاتی مختلفی قرار گرفته است و کاربرد پلیمرها نیز در این زمینه گسترش یافته است. در این پروژه، روش به کار گرفته شده، آزادسازی ک...

Journal: :journal of agricultural science and technology 2013
m. arrobas m. ângelo rodrigues

d-coder is a fertilizer with a new slow-release mechanism consisting of an organo-mineral matrix that releases the nutrients only in the presence of growing plants. pot and field experiments were carried out to study the release pattern of n from d-coder. the experiments included grown and bare soil plots. the fertilizer treatments were d-coder, ammonium nitrate (anpreplant), and the control. a...

Journal: :iranian journal of pharmaceutical research 0
reza masaeli dental biomaterials department, school of dentistry, tehran university of medical sciences, tehran, iran teherh sadat jafarzadeh kashi dental biomaterials department, school of dentistry, tehran university of medical sciences, tehran, iran rasoul dinarvand nanotechnology research centre, faculty of pharmacy, tehran university of medical sciences, tehran 1417614411, iran mohammadreza tahriri dental biomaterials department, school of dentistry, tehran university of medical sciences, tehran, iran vahid rakhshan department of anatomy, dental branch, islamic azad univesity mehdi esfandyari-manesh nanotechnology research center,tehran university of medical sciences, tehran, iran

microspheres formulated from poly (d,l-lactic-co-glycolide) (plga), a biodegradable polymer, have been extensively evaluated as a drug delivery system. in this study, the preparation, characterization and drug release properties of the plga microspheres were evaluated. simvastatin (sim)-loaded plga microspheres were prepared by oil-in-water emulsion/solvent evaporation method. the microspheres ...

Journal: :nanomedicine research journal 0
aliakbar tarlani chemistry & chemical engineering research center of iran, pajoohesh blvd., km 17, karaj hwy, tehran 14968-13151, iran mohsen isari chemistry & chemical engineering research center of iran, pajoohesh blvd., km 17, karaj hwy, tehran 14968-13151, iran avideh khazraei chemistry & chemical engineering research center of iran, pajoohesh blvd., km 17, karaj hwy, tehran 14968-13151, iran mahboubeh eslami moghadam chemistry & chemical engineering research center of iran, pajoohesh blvd., km 17, karaj hwy, tehran 14968-13151, iran

objective(s): in a new approach, following the development in metal oxide chemistry, the ibuprofen as low water soluble nonsteroidal anti-inflammatory drug diffused into synthetic sol-gel derived nano porous g-alumina by an impregnation method in order to increase the solubility and control the drug release in physiological environment. methods: sol-gel method was utilized for the fabrication o...

Hydroxypropyl starch was synthesized by modified sago starch with hydroxypropylation reaction. Hydroxypropyl starch nanoparticles with mean particle sizes of 110 nm are obtained by controlled precipitation through the drop-wise addition of dissolved hydroxypropyl starch solution into excess absolute ethanol. Piperine was loaded onto hydroxypropyl starch nanoparticles and native starch nanoparti...

Journal: :iranian journal of pharmaceutical research 0
r jacky dias s shamling sakhare k krishnat mali

the purpose of this study was to design and optimize an oral controlled release acyclovir mucoadhesive tablet, in term of its drug release and mucoadhesive strength. a 32 full factorial design was employed to study the effect of independent variables like carbopol-934p and hydroxypropyl methylcellulose k100m, which significantly influence characteristics like swelling index, ex-vivo mucoadhesiv...

K Krishnat Mali R Jacky Dias S Shamling Sakhare

The purpose of this study was to design and optimize an oral controlled release acyclovir mucoadhesive tablet, in term of its drug release and mucoadhesive strength. A 32 full factorial design was employed to study the effect of independent variables like Carbopol-934P and hydroxypropyl methylcellulose K100M, which significantly influence characteristics like swelling index, ex-vivo mucoadhesiv...

Journal: Nanomedicine Journal 2015

Objective(s):Despite of wide range applications of polymeric nanoparticles in protein delivery, there are some problems for the field of protein entrapment, initial burst and controlled release profile.   Materials and Methods: In this study, we investigated the influence of some changes in PLGA nanoparticles formulation to improve the initial and controlled release profile. Selected parameters ...

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