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关键词:'46070'
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Xianfeng Gao et al.
Physical chemistry chemical physics : PCCP, 19(7), 4956-4961 (2017-02-06)
The electron transport layer (ETL) plays a critical role in high efficiency perovskite solar cells. In this study, an anodic TiO
Yutaka Okuda et al.
International journal of pharmaceutics, 423(2), 351-359 (2011-12-06)
The aim of this study is to design a new orally disintegrating tablet (ODT) containing micronized ethylcellulose (MEC). The new ODT was prepared by physical mixing of rapidly disintegrating granules (RDGs) with MEC. To obtain RDGs, mannitol was spray-coated with
Daniela Traini et al.
International journal of pharmaceutics, 438(1-2), 150-159 (2012-09-12)
The potential of excipient coating to enhance aerosol performance of micronized drugs in carrier excipient-drug blends, used in dry powder inhalers, was investigated. Both EC (ethyl cellulose) and PVP (polyvinylpyrrolidone) were used as coating agents. Carriers were prepared via sieve
Helene Andersson et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 48(1-2), 240-248 (2012-11-20)
Films of ethyl cellulose (EC) and water-soluble hydroxypropyl cellulose (HPC) can be used for extended release coatings in oral formulations. The permeability and microstructure of free EC/HPC films with 30% w/w HPC were studied to investigate effects of EC molecular
Preparation and in vivo evaluation of spray dried matrix type controlled-release microparticles of tamsulosin hydrochloride for orally disintegrating tablet.
Park CW, Kim JY, Rhee YS, Oh TO, et al.
Drug Devel. Ind. Pharm., doi: 10-doi: 10 (2011)
A Wahab et al.
Die Pharmazie, 66(9), 677-683 (2011-10-27)
The present work reports the study of different controlled release formulations of ketoprofen, which is a non-steroidal anti-inflammatory drug (NSAID) and like other NSAIDs requires large and frequent daily doses, resulting in severe side effects and non-compliance. To avoid these
Hosseinali Tabandeh et al.
Pakistan journal of pharmaceutical sciences, 27(3), 495-503 (2014-05-09)
This study was performed to achieve sustained-release Ibuprofen matrix tablets with a zero-order release kinetic while most of the previous formulations have shown Higuchi release kinetic. Considering the results from previous studies, ethyl cellulose, Carbopol 934P, Carbopol 974P, and Pemulen
Nahla S Barakat et al.
Drug development and industrial pharmacy, 39(2), 352-362 (2012-05-01)
Gliclazide (GLZ)-loaded microparticles made with a polymeric blend were prepared by a solvent evaporation technique. Organic solutions of two polymers, poly(ε-caprolactone) (PCL) and Eudragit RS (E RS) or ethyl cellulose (EC), in different weight ratios, and 33.3% of GLZ were
Amornset Tachaprutinun et al.
International journal of pharmaceutics, 441(1-2), 801-808 (2012-12-29)
The method to prepare mucosa-plates, glass slides covalently coated with mucin, is demonstrated. The use of the plate to evaluate mucoadhesion of nanocarriers made from different four polymeric materials, N-succinylchitosan (NS-chitosan), alginate (ALG), ethylcellulose (EC), and a blend of EC
Xin Li et al.
Die Pharmazie, 67(8), 695-700 (2012-09-11)
A novel osmotic pump tablet with ethyl cellulose (EC) and polyvinyl pyrrolidone (PVP) as the semipermeable membrane and isosorbide-5-mononitrate (5-ISMN) as the model drug was formulated in this study. Zero order release kinetics were attained by avoiding aging during storage.
N Suwannateep et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 82(3), 485-490 (2012-09-08)
The phytochemical curcumin possesses antioxidant activity; however, it becomes unstable after being exposed to light or heat or loses activity during storage. This is especially important when curcumin is applied to the skin within a cosmetic or pharmaceutical formulation, since
Avi Schneider et al.
Proceedings of the National Academy of Sciences of the United States of America, 117(49), 31010-31017 (2020-11-25)
Perovskite solar cells have developed into a promising branch of renewable energy. A combination of feasible manufacturing and renewable modules can offer an attractive advancement to this field. Herein, a screen-printed three-layered all-nanoparticle network was developed as a rigid framework
Anurag Verma et al.
Acta pharmaceutica (Zagreb, Croatia), 62(2), 237-250 (2012-07-04)
Chitosan has become a focus of major interest in recent years due to its excellent biocompatibility, biodegradability and non-toxicity. Although this material has already been extensively investigated in the design of different types of drug delivery systems, it is still
Tazin Mahnaj et al.
Pharmaceutical development and technology, 18(5), 982-989 (2011-08-25)
Ethyl cellulose (EC) polymer was characterized for its property before considering the interactions with the plasicizer. Ethocel Std.10 FP Premium from Dow chemical company USA was tested for its solubility, morphology and thermal properties. Seven percentage of EC solution in
Nikhil Kasliwal et al.
Archives of pharmacal research, 34(10), 1691-1700 (2011-11-15)
The present study was undertaken to develop and evaluate an oro-dispersible, sustained release tablet of metoclopramide HCl. The technology was comprised of developing sustained release microparticles, and compression of resultant microspheres into a fast dispersible tablet by direct compression. The
K Rehman et al.
Drug research, 63(12), 657-662 (2013-07-12)
The increase in diseases of the colon underscores the need to develop cost-effective site-directed therapies. We formulated a polysaccharide-based matrix system that could release ibuprofen under conditions simulating those in the colon by employing a wet granulation method. Tablets were
Syed Umer Jan et al.
Pakistan journal of pharmaceutical sciences, 25(4), 751-756 (2012-09-27)
The aim and objective of the present study was to formulate and evaluate controlled release polymeric tablets of ibuprofen with determinations of formulation factors using various grades and types of polymer ethocel i.e. ethocel standard 10P; 10FP, 100P and100FP for
Muhammad K Shahzad et al.
Advances in clinical and experimental medicine : official organ Wroclaw Medical University, 22(2), 177-183 (2013-05-28)
The aim of the present work was to formulate flurbiprofen (FLB) loaded microspheres of hydroxypropylmethycellulose and ethylcellulose polymers to study the effect of different proportions of the polymer mixture on the release behavior of the drug. A series of microspheres
Claire Gendre et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 81(3), 657-665 (2012-05-09)
The dissolution method is still widely used to determine curing end-points to ensure long-term stability of film coatings. Nevertheless, the process of curing has not yet been fully investigated. For the first time, joint techniques were used to elucidate the
M Akhlaq Mughal et al.
Drug development and industrial pharmacy, 39(9), 1439-1446 (2012-10-13)
Hydralazine hydrochloride is an antihypertensive used alone or in combination with isosorbide nitrate for the treatment of congestive heart failure. Since control of blood pressure should be continuous, sustained release delivery of this drug is considered therapeutically beneficial. Core beads
Shivaan Cooppan et al.
Pharmaceutical development and technology, 18(5), 1066-1077 (2012-05-18)
This study aimed at developing double crosslinked isoniazid (INH)-loaded polymethyl-methacrylate-ethylcellulose (PMMA-EC) polyspheres for rate-controlled enteric drug delivery. A PMMA solution was manipulated with the addition of EC to produce polyspheres by drop-wise extrusion into a primary crosslinking solution of AlCl3
Yuri Ikeuchi-Takahashi et al.
International journal of pharmaceutics, 453(2), 454-461 (2013-06-26)
Nonsteroidal anti-inflammatory drugs (NSAIDs) are administered for pain relief from oral mucositis. However, the systemic administration of NSAIDs is limited due to systemic side effects. To avoid these side effects and treat local lesions effectively, a matrix type mucoadhesive tablet
Oguzhan Gunduz et al.
Pharmaceutical research, 30(1), 225-237 (2012-09-08)
To investigate a new microfluidic method for the continuous preparation of hollow-shell nanoparticles of a hydrophobic polymer and the simultaneous encapsulation within these of a hydrophilic active pharmaceutical ingredient. A specially designed and constructed microfluidic device which facilitates at a
Francisco Flores-Céspedes et al.
Journal of agricultural and food chemistry, 60(4), 1042-1051 (2012-01-10)
Imidacloprid, a systemic insecticide that has a water solubility of 610 mg L(-1), has been formulated in lignin-polyethylene glycol matrices by a melting process. This formulation was coated in a Wurster type fluidized-bed equipment using ethylcellulose and dibutyl sebacate. Imidacloprid
Mohan Thakare et al.
Pharmaceutical development and technology, 18(5), 1213-1219 (2011-10-14)
Altering the combined hydrophilic-lipophilic balance (CHLB), by varying the ratio of dual surfactants, on formulation parameters and in vitro drug release of ethyl cellulose microspheres was examined. Theophylline, a xanthine bronchodilator was used to model controlled release owing to its
D G Yu et al.
Acta biomaterialia, 9(3), 5665-5672 (2012-10-27)
The capability of core/sheath nanofibers prepared using coaxial electrospinning to provide adjustable biphasic drug release was investigated. Using ketoprofen (KET) as the model drug, polyvinylpyrrolidone as the sheath polymer, and ethyl cellulose as the core matrix, the coaxial process could
Ghulam Murtaza
Acta poloniae pharmaceutica, 69(1), 11-22 (2012-05-12)
Ethylcellulose (EC) based microencapsulated drug delivery systems are being extensively studied throughout the world for achieving extended drug release and protecting the core substance from degradation. The in vitro evaluation of EC microcapsules have elucidated that their particle characteristics are
Anna Wattanasatcha et al.
International journal of pharmaceutics, 434(1-2), 360-365 (2012-06-16)
Among thymol, carvacrol, citronellal, eugenol and terpinen-4-ol, thymol showed the highest antibacterial activity against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa. Thymol was then encapsulated into water dispersible submicron sized ethylcellulose/methylcellulose spheres, attaining the relatively high thymol loading level of
H V Adikane et al.
Applied biochemistry and biotechnology, 169(3), 1026-1038 (2013-01-09)
The chemical modification of developed ethyl cellulose-based membrane was carried out to make it suitable for bioseparation. The different reagents were used for the modification of membrane to couple protein A (PA) to study the purification of immunoglobulin G (IgG)
Amelia M Avachat et al.
Acta pharmaceutica (Zagreb, Croatia), 61(4), 363-376 (2011-12-29)
An emulsion solvent evaporation method was employed to prepare microspheres of ropinirole hydrochloride, a highly water soluble drug, by using ethylcellulose and PEG with the help of 32 full factorial design. The microspheres were made by incorporating the drug in
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