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“Five new glycosides, quercetin 3′-O-beta-D-galactopyranoside (1), quercetin 3-O-(2 ”-acetyl)-beta-D-glucopyranoside (2), 4,6-dihydroxy-2-methoxyphenyl 1-O-beta-D-glucopyranoside (3), 4-hydroxy-2,6-dimethoxyphenyl 1-O-alpha-L-rhamnopyranosyl (1 -> 6)-beta-D-glucopyranoside (4) and 3-methyl-but-2-en-1-yl beta-D-glucopyranosyl (1 -> 6)-beta-D-glucopyranoside (5), were isolated from Hypericum erectum Thunb. Their structures were established on the basis of spectral
and chemical data.”
“Electromigration time to failure and electrical resistivity of 95.5%Sn-1.5%Ag-0.5%Cu-0.03W%Ni microelectronics solder joints have been investigated experimentally. A Black-type electromigration time to failure selleck chemicals equation is developed to describe the time to failure versus current density and temperature. It is observed that resistance of a solder joint is not just a function of the temperature BMS-754807 inhibitor but also a function of the current density. The activation energy
over the range of 83-174 degrees C is measured to be 0.77 +/- 0.12 eV, and the current density exponent is found to be (8.60 +/- 1.65). It is also shown that the most commonly used Black’s electromigration time to failure equation cannot be used for solder joints.”
“Many ad hoc fasting guidelines for pre-anesthetic patients prohibit gum chewing. We find no evidence that gum chewing during pre-anesthetic fasting increases the volume or acidity of gastric juice in a manner that increases risk, nor that the occasional associated unreported swallowing of gum risks subsequent aspiration. On the contrary, there is evidence that gum chewing promotes gastrointestinal motility and physiologic gastric emptying. Recommendations against pre-anesthetic gum chewing do not withstand scrutiny and miss an opportunity to enhance comfort and sense of wellbeing for patients awaiting anesthesia. Gum chewing during the pre-anesthetic nil per os (NPO)
period would also permit the development of gum-delivered premedications and should be permitted in children old enough Selleck Thiazovivin to chew gum safely. Gum chewing should cease when sedatives are given and all patients should be instructed to remove any chewing gum from the mouth immediately prior to anesthetic induction.”
“Two new neolignan glycosides, (7R, 8R)-threo-guaiacylglycerol-8-O-4′-sinapyl ether 7-O-beta-D-glucopyranoside (1) and (7S, 8R)-5-methoxydehydrodiconiferyl alcohol 4-O-beta-D-glucopyranoside (2), and four known ones (3-6), were isolated from the leaves of Osmanthus heterophyllus. The structures of compounds 1-6 were established on the basis of spectral and chemical data.”
“The influence of Sn doping on the growth of In2O3 on Y-stabilized ZrO2(100) by oxygen plasma assisted molecular beam epitaxy has been investigated over a range of substrate temperatures between 650 and 900 degrees C.