Preparing β-Si3N4 crystals by freeze-drying and using 10 wt% Ba0.75Sr0.25Al2Si2O8 as flux
نویسندگان
چکیده
منابع مشابه
Freeze-drying fungi using a shelf freeze-drier.
Lyophilization, the removal of water by freezing and then volatilization at low pressure and temperature, has been employed as a standard long-term preservation method for many filamentous fungi. The method outlined involves the use of standard shelf freeze-drying and skimmed milk as a suspending solution/lyoprotectant. This approach has been employed to freeze-dry the majority of the 50,000 fu...
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A method was developed for freeze-dry stabilization of poliovirus type 3. An ultrafiltration procedure was used to remove salts from infected tissue culture fluid, and the virus was freeze-dried after suspension in an alkaline organic buffer. This method was further tested with other picornaviruses including poliovirus types 1 and 2, coxsackieviruses A9, A20, B2, and B5, echovirus 11, and the e...
متن کاملCirculating-Gas Freeze Drying
WAGMAN, JACK (U.S. Army Biological Laboratories, Frederick, Md.) AND EDWARD J. WENECK. Preservation of bacteria by circulating-gas freeze drying. Appl. Microbiol. 11:244-248. 1963.-Water-washed Serratia marcescens and Escherichia coli were freeze dried in a circulating-gas system at atmospheric pressure. This convective procedure resulted in a substantially higher survival of organisms than cou...
متن کاملDenaturation of Enzyme Protein by Freeze-Thawing and Freeze-Drying ; I. Freeze-thawing and freeze-drying of myosin and some other muscle proteins
Changes in physico-chemical properties and m enzymatic activities of some muscle proteins by freeze-thawing or freeze-drying were measured for the purpose of clarifying the mechanism of protein denaturation by freeze-thawing and freezedrying. The results showed following: Freeze-thawing unfolded the conformation of the rod-like proteins and decreased their enzymatic activities. The two effects ...
متن کاملFormulation of Nanoparticle Containing Everolimus Using Microfluidization and Freeze-Drying.
The aims of this study were to improve in vitro dissolution property of poorly water-soluble everolimus (EVR) for enhanced bioavailability without using organic solvents and characterize the effects of microfluidization and freeze-drying on physicochemical properties of EVR nanosuspension and nanoparticle, respectively. EVR nanosuspension was prepared using microfluidization with various types ...
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ژورنال
عنوان ژورنال: Materials Letters
سال: 2016
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2015.12.144