We analyzed 42 models from 14 brands of refill liquids for e-cigarettes for the presence of micro-organisms, diethylene glycol, ethylene glycol, hydrocarbons, ethanol, aldehydes, tobacco-specific nitrosamines, and solvents. All the liquids under scrutiny complied with norms for the absence of yeast, mold, aerobic microbes, Staphylococcus aureus, and Pseudomonas aeruginosa. Diethylene glycol, et...

Abstract A process for the well‐controlled growth of acrylates by Cu‐mediated polymerization has been developed, with macroinitiator synthesized continuously in a copper tubular reactor and subsequently chain‐extended semibatch without additional copper. Extending this to methacrylates styrene, however, proven difficult due significant reduction reaction rate. This barrier overcome chain‐extend...

The synthesis of linear and crosslinked polyurethanes based on α,ω-dihydroxypolydiethylene glycol terephthalate (PDET) is described. Prior to the preparation these materials, a PDET polymer was obtained by conventional condensation reaction between dimethyl diethylene glycol, well-characterized fraction with number average molecular weight 3,650 g mol−1 chosen for polyurethanes. Specifically, t...

C-dots (3-5 nm in diameter) obtained by most simple heating of polyols (glycerol, diethylene glycol and PEG 400) show intense blue and green emission (50% quantum yield). Upon modification with TbCl3/EuCl3, energy transfer from the C-dots to the rare-earth metal results in line-type Tb(3+) (green)/Eu(3+) (red) emission with quantum yields up to 85%.

Since the beginning of aseptic surgery there has been a constant search for a quick and economical means of sterilizing surgical instruments without dulling effect. Heat sterilization in oil, as introduced by Lyman5 in 1917, has proved to be the most satisfactory method thus far, and is widely used in hospitals. There is a definite disadvantage to this procedure, due to the fact that hot oil ac...

Bovine IVF embryos developed on Days 7, 8 and 9 were equilibrated with 1.6 M propylene glycol (PG), 1.8 M ethylene glycol (EG), 1.1 M diethylene glycol (DEG) or 1.3 M ethylene glycol monomethyl ether (EME) for 10 to 20 min in modified phosphate buffered saline. (mPBS) supplemented with 10% superovulated cow serum. The embryos were loaded into 0.25-ml plastic straws and were placed directly into...