2114 results about "Adduct" patented technology

A method of forming a transition metal containing films on a substrate by a cyclical deposition process is disclosed. The method may include: contacting the substrate with a first vapor phase reactant comprising a transition metal halide compound comprising a bidentate nitrogen containing adduct ligand; and contacting the substrate with a second vapor phase reactant. A method for supplying a transition metal halide compound comprising a bidentate nitrogen containing ligand to a reaction chamber is disclosed, along with related vapor deposition apparatus.

A spherical catalyst for the polymerizing reaction of olefin is composed of an active magnesium halide carrier, at least one Ti compound and at least one optional electronic doner. Said carrier is prepared from the molten magnesium halide-alcohol addition compound through rotational dispersing in supergravitational field.

A desorption atmospheric pressure chemical ionization (DAPCI) system delivers a primary ion beam composed of an inert, high velocity gas and solvent ions to a surface to effect desorption and ionization of both volatile and non-volatile species present on surfaces. A electrode having a tapered tip is connected to a high voltage power supply. The tapered tip projects outward from a capillary carrying a high-speed flow of gas. A vapor of a solvent is mixed into the annular gas flow surrounding the needle. The gaseous solvent vapor is ionized in close proximity to the tapered tip by virtue of the high voltage applied to the electrode. The high-speed flow of gas and solvent vapor ions extending outward from the capillary is directed toward a substrate on which an analyte of interest may have been deposited. The solvent vapor ions can blanket the surface of the analyte causing a static charge build up that facilitates ion desorption and additionally can provide positive ion adducts of the analyte freed from the substrate surface that can be directed toward an atmospheric intake of a mass spectrometer or other instrument capable of studying the analyte.

The invention presents a method for examining genetic material (deoxyribonucleic acid, DNA) to detect the presence of pre-known mutations, especially single nucleotide polymorphisms (SNP), using mass spectrometry with ionization by matrix-assisted laser desorption (MALDI). The invention uses nucleoside triphosphates with modified sites for the method of primer extension in a duplicating, enzymatic reaction and at least partially removal of primers from the extension product, in combination with product neutralization by chemical treatment of the modified sites, so that the resulting DNA products can be, by using special matrix materials, preferredly ionized in an adduct-free form over other constituents in the reaction solution without any further cleaning. The method is particularly suitable for simultaneous identification of several mutations by multiplexing.