摘要:
The present invention provides a process for direct hydroxylation of aromatic hydrocarbons like benzene to phenol, toluene to cresols and anisole to methoxy phenols by using hydrogen peroxide as environmentally benign oxidant in polar solvent like acetonitrile using vanadium phthalocyanine or its derivative as a catalyst, at a temperature in the range of 25-100° C.
摘要:
A system, method, and computer program product are provided for avoiding an on-access scan of data after an on-demand scan of the data. In use, an on-demand scan is performed on data accessible by a collaborative portal application. Further, an on-access scan of the data is avoided, after the on-demand scan.
摘要:
The present invention relates to the development of a novel clone of Vetiver [Vetveria zizaniodes (L) Nash. syn. Chrysopogon zizaniodes (L.) Roberty; family Poaceae], named ‘CIMAP-KHUS 40’ characterised by somatic chromosome number 4x=40, larger stomata, fast growing deep penetrating roots, and seed infertility disabling its spread as a weed. This clone has unique ISSR and RAPD profiles that serve as DNA-fingerprints, and is developed from a unique diploid plant (2n=20). The invention document details all the pertinent data relating to this clone, its biological features and usefulness, and the method of its development.
摘要:
The present invention provides a process for direct hydroxylation of aromatic hydrocarbons like benzene to phenol, toluene to cresols and anisole to methoxy phenols by using hydrogen peroxide as environmentally benign oxidant in polar solvent like acetonitrile using vanadium phthalocyanine or its derivative as a catalyst, at a temperature in the range of 25-100° C.
摘要:
The present invention relates to the development of a novel clone of Vetiver [Vetveria zizaniodes (L) Nash. syn. Chrysopogon zizaniodes (L.) Roberty; family Poaceae], named ‘CIMAP-KHUS 40’ characterised by somatic chromosome number 4x=40, larger stomata, fast growing deep penetrating roots, and seed infertility disabling its spread as a weed. This clone has unique ISSR and RAPD profiles that serve as DNA-fingerprints, and is developed from a unique diploid plant (2n=20). The invention document details all the pertinent data relating to this clone, its biological features and usefulness, and the method of its development.
摘要:
communications grade glass optical fibers are protected from static fatigue failure by an initial coating that reacts with surface silanol groups, thereby to occupy or tie up water vapor reaction sites. The OH surface radicals may be bonded to by condensation reactions including: esterification, carboxylation, etherification, chlorination and ammination. For speed and simplicity of reaction, silanation with silanes is attractive as, for example, hexamethyldisilizane (HMDS). The reaction is sufficiently fast to use in a continuous fiber drawing and in-line coating process. The barrier coating may be selected to bond relatively strongly to an outer abrasion protection polymeric coating. Bonding is also enhanced by creating an initial minimum, evenly distributed concentration, of surface silanol groups, for example, about 5 groups/100 Angstrom units in any direction. The reaction molecule is also large enough to act as a water vapor barrier. Application of HMDS advantageously is by a fiber-contacting wick of urethane foam applied directly after fiber drawing, and followed by heating and application of the abrasion resistant polymer. The latter is ethylene vinyl acetate or other polymer that does not cause microbending losses in the fiber.
摘要:
A reverse osmosis pressure vessel end cap assembly includes a seal plate positioned within a pressure vessel shell, with one or more load plates positioned to retain the seal plate in position. A load ring is captured or expanded by the load plates to secure the load ring into a channel in the interior surface of the pressure vessel shell. The end cap assembly thus provides secure yet easily removable access to the pressure vessel, capable of withstanding the high pressures of a reverse osmosis filtration system. Various exemplary embodiments of the assembly are provided.