منابع مشابه
Determination of residual acrylamide in medical polyacrylamide hydrogel by high performance liquid chromatography tandem mass spectroscopy.
OBJECTIVE To determine residual acrylamide in medical polyacrylamide hydrogel by high performance liquid chromatography tandem mass spectroscopy (HPLC-MS). METHODS After (13)C3 labeled acrylamide was added, the sample was extracted with water and then cleaned up with Extrelut 20. The polyacrylamide hydrogel sample and 20 clinical cases were analyzed by HPLC-MS/MS and isotope dilution quantify...
متن کاملInfluence of Cholesterol Esters of Varying Unsaturation
Previous work has shown that cholesterol esters are relatively insoluble (<5 mol%) in bilayer phosphatidylcholine and sphingomyelin systems, but exhibit greater solubility in hexagonal (HII) phase anhydrous phosphatidylcholine systems obtained above 100°C. We examine here the influence of cholesterol esters of varying unsaturation on fully hydrated egg phosphatidylethanolamine systems, which un...
متن کاملPOLYACRYLAMIDE FLOCCULANTS IN JUICE CLARIFliCATION
The importance of various factors relating to the preparation of polyacrylamide flocculant solutions was investigated. For optimum results, these solutions should be agitated for at least 2 hours before use while water of high ionic content should be avoided. The quantity of calcium phosphate precipitated during the clarification reaction and the calcium concentration in clear juice are shown t...
متن کاملMembrane-lipid unsaturation and mitochondrial function in Saacharomyces cerevisiae.
The lipid composition of yeast cells was manipulated by the use of an unsaturated fatty acid auxotroph of Saccharomyces cerevisiae. There was a 2-3-fold decrease in the concentration of cytochromes a+a3 when the unsaturated fatty acid content of the cells was decreased from 60-70% of the total fatty acid to 20-30%. The amounts of cytochromes b and c were also decreased under these conditions, b...
متن کاملUnsaturation and variable hapticity in binuclear azulene manganese carbonyl complexes.
Azulene is reported to react with Mn(2)(CO)(10) to give trans-C(10)H(8)Mn(2)(CO)(6), which has been shown by X-ray crystallography to have a bis(pentahapto) structure with no metal-metal bond. This structure is found by density functional theory to be the lowest energy C(10)H(8)Mn(2)(CO)(6) structure. However, a corresponding bis(pentahapto) cis-C(10)H(8)Mn(2)(CO)(6) structure, also without an ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Polymer Science
سال: 1960
ISSN: 0021-8995,1097-4628
DOI: 10.1002/app.1960.070030720