نتایج جستجو برای: microemulsion based gels

تعداد نتایج: 2955132  

2013
Linhua Hu Chuandao Wang Sungsik Lee Randall E. Winans Laurence D. Marks Kenneth R. Poeppelmeier

Microemulsion science has provided a wide range of possibilities in materials fabrication. Here, we describe a novel approach to the synthesis of SrTiO3 nanoparticles of different shapes from a microemulsion. We show that the microemulsion structure plays a critical role in the shape of the nanoparticles, with diffusion-limited growth when normal or reverse micelles are present to nanocuboids w...

2011
Marty Hinz Alvin Stein Thomas Uncini

BACKGROUND The aim of this study was to develop new systems for transdermal delivery of paeonol, in particular microemulsion gel and cubic gel formulations. METHODS Various microemulsion vehicles were prepared using isopropyl myristate as an oil phase, polyoxyethylated castor oil (Cremophor(®) EL) as a surfactant, and polyethylene glycol 400 as a cosurfactant. In the optimum microemulsion gel...

2011
Maofu Luo Qi shen Jinjin chen

correspondence: Qi shen school of Pharmacy, shanghai Jiao Tong University, Dongchuan road 800, shanghai 200240, People’s republic of china Tel +86 21 3420 4049 Fax +86 21 3420 4049 email [email protected] Background: The aim of this study was to develop new systems for transdermal delivery of paeonol, in particular microemulsion gel and cubic gel formulations. Methods: Various microemulsion veh...

2011
Hyun-Young Lee Sang-Hun Kim Keum-Young So

BACKGROUND A microemulsion propofol causes a high incidence of pain during intravenous injection. In this study, we investigated the effect of ramosetron on pain induced by microemulsion propofol injection. METHODS After prospective power analysis and institutional review board approval, a total of 200 ASA I and II patients undergoing general anesthesia were divided into 4 groups. They receiv...

2011
Cheol Won Jeong Seong Heon Lee Jin Ju Seong Wook Jeong Hyung Gon Lee

BACKGROUND The injection pain of microemulsion propofol is frequent and difficult to prevent. This study examined the prevention of pain during microemulsion propofol injection by pretreatment with different doses of remifentanil or saline, and premixing of lidocaine. METHODS One hundred sixty ASA physical status 1-2 adult patients scheduled for elective surgery were enrolled into one of four...

Journal: :applied biotechnology reports 0
ramin karimian applied biotechnology research center, baqiyatallah university of medical sciences, tehran, iran farideh piri department of chemistry, faculty of science, zanjan university, zanjan, iran seyed javad davarpanah applied biotechnology research center, baqiyatallah university of medical sciences, tehran, iran

the use of an inorganic phase in water-in-oil (w/o) microemulsion   has   received considerable attention recently for preparing metal oxide   nanoparticles. this is a technique, which allows preparation of ultrafine   metal oxide nanoparticles within the size range 40 to 80 nm. preparation of   nano zno and cr 2 o 3 studied, investigated in the inverse   microemulsion system. therefore the nuc...

Journal: :Acta cirurgica brasileira 2013
Cristian Durço Paço Matheus Fachini Vane Rafael Bicarato de Andrade Maria Aparecida Domingues Lidia Raquel de Carvalho Daniela Carvalho dos Santos Regina Kiomi Takahira Norma Sueli Pinheiro Modolo Luiz Antonio Vane

PURPOSE To compare the incidence of endothelial injury after single-dose or continuous propofol infusion in conventional lipid-based emulsion (LE) versus microemulsion (ME). METHODS Forty-two rabbits (2.5-4.5 Kg) were randomly allocated into seven groups of six animals each: SHAM- surgical treatment alone; Bolus Control Group - 3 mL-intravenous (IV) bolus of saline; Continuous Infusion Contro...

Journal: :Journal of colloid and interface science 1999
Wines Dukhin Somasundaran

Acoustic spectroscopy was used to monitor the droplet size distribution in a classic three component system of heptane, water, and aerosol-OT (AOT). The size of the reverse microemulsion drops was varied by changing the molar ratio of water to AOT surfactant. The acoustic results for this transparent microemulsion were found to be in close agreement with literature results obtained with small a...

2005
Chung-Hsin Lu Hsuan-Hao Chang Chi Yen

Lithium nickel oxide (LiNiO2) powders with an R3 m structure are successfully synthesized via a developed reverse microemulsion process. This method can effectively reduce the calcination temperature for synthesizing monophasic LiNiO2 powders to 700 C, which is much lower than that in the solid-state process. Nanosized LiNiO2 powders with narrow particle size distribution are obtained via the m...

2011
Soheil Sharifi Masoud Amirkhani

The mixture of C12E5 microemulsion with PEG have been studied by small-angle X-ray scattering and dynamic light scattering in order to determine structure and dynamic of the system. Light scattering experiment shown an exponential relaxation for pure C12E5 microemulsion that with increasing of PEG concentration in the C12E5 microemulsion, relaxation becomes non-exponential, which demonstrates t...

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