نتایج جستجو برای: modified release

تعداد نتایج: 458567  

Journal: :iranian journal of pharmaceutical research 0
xiahui peng department of bioengineering and environmental science, changsha university, changsha 410003, china. qiang zhuang school of chemistry and chemical engineering, central south university, changsha 410083, china. dongming peng school of pharmacy, hunan university of chinese medicine, changsha 410208, china. qiuli dong school of chemistry and chemical engineering, central south university, changsha 410083, china. lini tan school of chemistry and chemical engineering, central south university, changsha 410083, china. feipeng jiao school of chemistry and chemical engineering, central south university, changsha 410083, china.

in this paper, carbon nanotubes (cnts) were added into chitosan (cs) hydrogels in the form of chitosan modified cnts (cs-cnts) composites to prepare carbon nanotubes hydrogels (cnts-gel). the products, named cs-mwcnts, were characterized by scanning electron microscope (sem) and fourier transform infrared (ftir) spectroscopy. swelling properties and effect of ph on controlled release performanc...

Journal: :مهندسی بیوسیستم ایران 0
هادی الماسی استادیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه ارومیه بابک قنبرزاده دانشیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه تبریز جلال دهقان نیا استادیار گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه تبریز علی اکبر انتظامی استاد گروه شیمی پلیمر دانشکدۀ شیمی دانشگاه تبریز اصغر خسروشاهی اصل استاد گروه علوم و صنایع غذایی دانشکدۀ کشاورزی دانشگاه ارومیه

a poly(lactic acid) (pla) based nanocomposite active packaging has been developed for the controlled release of tert-butylhydroquinone (tbhq) antioxidant. pla based active films were loaded with tbhq (3%wt) or mixture of modified cellulose nanofiber (mcnf) (8%wt) and tbhq (3%wt) to obtain active and nanocomposite active films, respectively. release studies indicated that the release rate of tbh...

Journal: :Chemical & pharmaceutical bulletin 2008
Hiroyuki Maeda Yutaka Ogawa Masato Ishiyama Tomoaki Hirayama Katsuhide Terada

The purpose of this study was to obtain a nicorandil pulsatile release tablet that has a well-regulated release lag time. When nicorandil is used as an antiangina drug, administration time control is important. A pulsatile release tablet is one of the effective approaches to modified release to reduce daily administration frequency. In this study, a pulsatile release tablet of nicorandil was fo...

Journal: :Neuron 2003
Charles F Stevens

Our understanding of synaptic transmission has grown dramatically during the 15 years since the first issue of Neuron was published, a growth rate expected from the rapid progress in modern biology. As in all of biology, new techniques have led to major advances in the cell and molecular biology of synapses, and the subject has evolved in ways (like the production of genetically engineered mice...

Journal: :International journal of pharmaceutics 2011
Wenlei Jiang Stephanie Kim Xinyuan Zhang Robert A Lionberger Barbara M Davit Dale P Conner Lawrence X Yu

Advances in predicting in vivo performance of drug products has the potential to change how drug products are developed and reviewed. Modeling and simulation methods are now more commonly used in drug product development and regulatory drug review. These applications include, but are not limited to: the development of biorelevant specifications, the determination of bioequivalence metrics for m...

Chenxi Zhao Dongming Peng Feipeng Jiao, jingyu Liu Lini Tan, Linqi Liu Qiang Zhuang Qiuli Dong, Xiahui Peng Xiaomei Wang,

In this paper, carbon nanotubes (CNTs) were added into chitosan (CS) hydrogels in the form of chitosan modified CNTs (CS-CNTs) composites to prepare carbon nanotubes hydrogels (CNTs-GEL). The products, named CS-MWCNTs, were characterized by scanning electron microscope (SEM) and Fourier transform infrared (FTIR) spectroscopy. Swelling properties and effect of pH on controlled release performanc...

Journal: :BMJ 2000
S Derry Y K Loke

OBJECTIVES To assess the incidence of gastrointestinal haemorrhage associated with long term aspirin therapy and to determine the effect of dose reduction and formulation on the incidence of such haemorrhage. DESIGN Meta-analysis of 24 randomised controlled trials (almost 66 000 participants). INTERVENTION Aspirin compared with placebo or no treatment, for a minimum of one year. MAIN OUTC...

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