نتایج جستجو برای: supercritical fluid

تعداد نتایج: 228491  

2013
Myung-Hee Lee Sung-Soo Kim Chang-Won Cho Sang-Yoon Choi Gyo In Kyung-Tack Kim

Ginseng seed oil was prepared using compressed, solvent, and supercritical fluid extraction methods of ginseng seeds, and the extraction yield, color, phenolic compounds, fatty acid contents, and phytosterol contents of the ginseng seed oil were analyzed. Yields were different depending on the roasting pretreatment and extraction method. Among the extraction methods, the yield of ginseng seed o...

2010
K. S. Nagarsekar M. S. Nagarsenker S. R. Kulkarni

Supercritical fluid extract of leaves of Vitex negundo was tested for its antimicrobial potential and was compared with that of ethanol extract, ether extract and hydrodistilled oil of leaves. The chemical constituents of extracts were studied by chromatographic techniques. Extracts were evaluated for antimicrobial potential against bacterial strains like Staphylococcus aureus, Bacillus subtili...

Majid Masoumi Nima Masoumi Fard شهره فاطمی,

A mathematical model is described and applied for adsorption process of ethyl acetate from supercritical CO2 stream on activated carbon particles. This model has the ability of illustrating variation of effluent concentration towards different parameters such as flow rate, temperature and pressure. In this research, a vast area of operational conditions is experienced. Mass transfer resistance ...

1996
V. Georgiev V. Petkov

In this work we study the existence of global solution to the semilinear wave equation (∂

Journal: :journal of agricultural science and technology 2012
s. majdi m. barzegar a. jabbari m. aghaalikhani

tobacco (nicotiana tabacum l.) is an important industrial crop and its seeds contain significant amounts of oil. the extraction of oil components using solvent at high pressure, or supercritical fluid (scf), has received much attention. in the present study, statistical analyses showed that the average extraction yield of seed oil of five tobacco varieties using sfe was 9.33%, which was higher ...

2013
Islane Espírito Santo André São Pedro Rosana Fialho Elaine Cabral-Albuquerque

The interest of the pharmaceutical industry in lipid drug delivery systems due to their prolonged release profile, biocompatibility, reduction of side effects, and so on is already known. However, conventional methods of preparation of these structures for their use and production in the pharmaceutical industry are difficult since these methods are usually multi-step and involve high amount of ...

2006
Yuehe Lin Xiaoli Cui Jun Wang Clive. H. Yen C. M. Wai

In recent years, the use of supercritical fluids (SCFs) for the synthesis and processing of nanomaterials has proven to be a rapid, direct, and clean approach to develop nanomaterials and nanocomposites. The application of supercritical fluid technology can result in products (and processes) that are cleaner, less expensive, and of higher quality than those that are produced using conventional ...

Journal: :Physical chemistry chemical physics : PCCP 2014
P N Bartlett D A Cook M W George A L Hector J Ke W Levason G Reid D C Smith W Zhang

Recent studies have shown that it is possible to electrodeposit a range of materials, such as Cu, Ag and Ge, from various supercritical fluids, including hydrofluorocarbons and mixtures of CO2 with suitable co-solvents. In this perspective we discuss the relatively new field of electrodeposition from supercritical fluids. The perspective focuses on some of the underlying physical chemistry and ...

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