نتایج جستجو برای: in situ forming sol gel

تعداد نتایج: 17010565  

H. Sarpoolaky, M. Biazar Markie, M. Khosravi Saghezchi, R. Ajami,

A comparing study on formation and microstructure features of aluminum titanate is investigated through both solid-state and sol-gel processes. Aluminum titanate formed by firing at 1350ºC and 1450ºC for 4h in solid-state process. In the sol-gel process formation of submicron sized particles is followed by addition of sucrose into the transparent sol. XRD analysis was confirmed the formation of...

Journal: :The journal of physical chemistry. B 2006
Xing-bin Yan Beng Kang Tay Yi Yang

We report that oxidized multiwalled carbon nanotubes (MWCNTs) can be synchronously dispersed and functionalized in TiO2 sol via an in situ sol-gel process. Transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and atomic force microscopy (AFM) were used to characterize the functionalized MWCNTs. The results revealed that the hydrolysis and condensat...

Journal: :Acta pharmaceutica 2003
Jagdish Balasubramaniam Shri Kant Jayanta Kumar Pandit

The poor bioavailability and therapeutic response exhibited by the conventional ophthalmic solutions due to pre-corneal elimination of the drug may be overcome by the use of in situ gel forming systems, which upon instillation as drops into the eye undergo a sol-gel transition in the cul-de-sac. This may result in better ocular availability of the drug. The purpose of this work was to develop a...

2014
Carolina Solis Maldonado Javier Rivera De la Rosa Carlos J. Lucio-Ortiz Aracely Hernández-Ramírez Felipe F. Castillón Barraza Jaime S. Valente

The role of iron in two modes of integration into alumina catalysts was studied at 0.39 wt% Fe and tested in trichloroethylene combustion. One modified alumina was synthesized using the sol-gel method with Fe added in situ during hydrolysis; another modification was performed using calcined alumina, prepared using the sol-gel method and impregnated with Fe. Several characterization techniques w...

2014
Sreeja C Nair Mable Sheeba

The human nose has the potential to be an alternative route for the systemic delivery of a wide range of therapeutic agents. The richly supplied vascular nature of the nasal mucosa and its high drug permeation makes it a potential route for the administration of many drugs including proteins, peptides and vaccines. Nasal route is most suitable for those drugs which cannot be administered orally...

2017
Zhuping Yin Feng Wu Tieling Xing Vamsi K. Yadavalli Subhas C. Kundu

In this report, a novel silk fibroin hydrogel with a reversible sol–gel transition capacity is presented, in which the base material of this reversible hydrogel is hydrophilic silk fibroin (HSF) obtained by immersing a dried regenerated Bombyx mori silk fibroin (SF) condensate in deionized water (DI water) and collecting its lixivium. The resulting HSF sol can exhibit an enhanced sol–gel transi...

اکبری, جعفر, سعیدی, مجید, سیاوشیان, فاطمه, عنایتی فرد, رضا, هشترودی, حامده,

Background and purpose: In Situ Gel dosage forms are successfully used as drug delivery systems to control drug release and protect the medicaments from a hostile environment. The aim of this study was to formulate and evaluate in situ oral topical gels of fluconazole based on concept of pH triggered system. Materials and methods: An in situ gel system consisting of carbopol 934, hydroxypropyl...

A number of ways have been investigated for administration of antibacterial agents in dealing of plaque-initiated periodontal disease. These include prolonged release intrapocket devices which are inserted at diseased sites. Intrapocket drug delivery system was designed which contain Doxycycline Hyclate an antibacterial agent. The formulations were so developed with an aim to reduce the dose of...

A number of ways have been investigated for administration of antibacterial agents in dealing of plaque-initiated periodontal disease. These include prolonged release intrapocket devices which are inserted at diseased sites. Intrapocket drug delivery system was designed which contain Doxycycline Hyclate an antibacterial agent. The formulations were so developed with an aim to reduce the dose of...

The application of Fe–TiO2 photocatalysis using sol–gel method by hot–dipping technique was investigated. Then, the influences of fabrication parameters, molar ratios of Fe to TiO2, the sol temperature, poly ethylene glycol (PEG) content and the number of dipping cycles on the photocatalytic activity in visible light region were mainly studied. The experimental results revealed the sample with ...

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