Abstract:
Quinazolines of the formula I in which R, R1, R2, R3, R4 and Y have the meaning indicated in Patent Claim 1, and their salts or solvates as glycoprotein IbIX antagonists.
Abstract:
High silica content optical glasses, containing more volatile oxides such as GeO.sub.2 and B.sub.2 O.sub.3, are produced by plasma fusion of powders without inordinately high loss of the more volatile constituents. The powders are produced by a process including the heat treatment of intimately mixed materials, which include the glass forming constituents. Small quantities of GeO.sub.2 are included in borosilicate glass to suppress bubble formation. Pairs of glass compositions have been found, with sufficient index of refraction difference to produce guidance in optical transmission lines, while possessing sufficient thermal expansion match to reduce stresses in the line.
Abstract:
High silica content optical glasses, containing more volatile oxides such as GeO.sub.2 and B.sub.2 O.sub.3, are produced by plasma fusion of powders without inordinately high loss of the more volatile constituents. The powders are produced by a process including the heat treatment of intimately mixed materials, which include the glass forming constituents. Small quantities of GeO.sub.2 are included in borosilicate glass to suppress bubble formation. Pairs of glass compositions have been found, with sufficient index of refraction difference to produce guidance in optical transmission lines, while possessing sufficient thermal expansion match to reduce stresses in the line.
Abstract translation:含有更多挥发性氧化物如GeO 2和B 2 O 3的高二氧化硅含量的光学玻璃通过粉末的等离子体熔融而没有较高挥发性组分的高损失而产生。 该粉末是通过包括玻璃形成成分在内的紧密混合材料的热处理的方法生产的。 少量的GeO 2被包括在硼硅酸盐玻璃中以抑制气泡形成。 已经发现了一对玻璃组合物,具有足够的折射率差异以在光学传输线中产生引导,同时具有足够的热膨胀匹配以减少线中的应力。
Abstract:
Quinazolines of the formula I in which R, R1, R2, R3, R4 and Y have the meaning indicated in Patent Claim 1, and their salts or solvates as glycoprotein IbIX antagonists.
Abstract:
Quinazolines of the formula (I) in which R, R1, R2, R3, R4 and Y have the meaning indicated in Patent claim 1, and their salts or solvates as glycoprotein IbIX antagonists.
Abstract:
A procedure is described for drawing glass fibers which are particularly suitable for use in optical waveguides. A laser is used as a souce of heat and an optical system is provided for focusing an annular beam around a glass preform from which the glass fiber is drawn. Particular attention is devoted to the optical focusing system to provide highly uniform distribution of heat and insure very precise short and long term fiber diameter control and precise control of the optical properties (freedom from scattering centers, profile of optical properties across the diameter) of the fiber. Precise diameter control of glass fibers for optical waveguides is highly desirable because it minimizes optical losses and facilitates low-loss splicing of individual glass fibers.
Abstract:
Systems for tracking, containing, and controlling moving objects such as vehicles, boats, airplanes, animals, and people use wireless RF or microwave signals to calculate position within a predefined boundary. The system has antennas in a location, and has processing for determining location either on a device on the mobile device or at a base station. The boundary can be arbitrary and can be learned during a set-up process.
Abstract:
A light guide is produced by the out-diffusion of boron oxide through a free surface of a uniform borosilicate mass. The resulting structure consists of increased index silica rich regions near the surface in contact with lower index regions of a composition approaching that of the unmodified borosilicate. The out-diffusion process, generally carried out at a temperature approaching the softening point of the glass, may be applied to a borosilicate tube to result in a fiber preform. Fibers drawn from such a preform may be characterized by a silica core region, a borosilicate clad region, and a silica outer shell. Use of the procedure results in a graded index structure.