摘要:
Proposed is a novel polysiloxane-polyether block copolymer having excellent heat resistance, which is characterized by the molecular structure consisting of repetition of diorganopolysiloxane units and polyoxyalkylene units having a bisphenol linkage of the formula --O--Pn--CMe.sub.2 --Pn--O-- in the unit, Pn being a 1,4-phenylene group and Me is a methyl group. This polysiloxane-polyether block copolymer can be prepared by conducting a hydrosilation reaction between a diorganopolysiloxane terminated at each molecular chain end with a silicon-bonded hydrogen atom and a polyoxyalkylene compound having the bisphenol linkage in the molecule and terminated at each molecular chain end with an alkenyl group or, preferably, allyl group in the presence of a platinum catalyst. The stability of the block copolymer obtained by the hydrosilation reaction can be further improved, when the block copolymer has a silicon-bonded hydrogen atom as the terminal group, by reacting the silicon-bonded hydrogen atom with water or alcohol to be converted into a silanolic hydroxy group or alkoxy group.
摘要:
Methyl (3R, 6E)-3-�(tert-butyldimethylsilyl)oxy!-7-�2', 6'-diisopropyl-4'-(4"-fluorophenyl)-5'-(methoxymethyl)pyridin-3'-yl!-5-oxy-6-heptenoate or other 3-oxy-5-oxo-6-heptenoic acid derivative is prepared by the reaction of an aromatic aldehyde and an oxyglutaric acid derivative in an aliphatic alcohol containing a small amount of water in the presence of an alkali metal carbonate or hydrogen carbonate.
摘要:
An ultrasound diagnosis apparatus for obtaining an ultrasound image used with a contrast agent is disclosed. Various kinds of data relating the contrast agent can be inputted or selected and they can also be displayed with the ultrasound image on a same display. The data inputted or selected can be used for controlling condition of the system. Further, information of time related to the examination using the contrast agent can be displayed on the display.
摘要:
The present invention aims to provide a deformed toner having a narrow toner particle size distribution, a simple manufacturing method of same, and an imaging apparatus using same.The toner particles are characterized in having an average diameter of d (d is in a range of 4-15 .mu.m), and that a volumetric fraction of the particles having the diameter in a range of d.+-.0.2 d equals to or exceeds 90% of total volume of the particles, and further, when a specific surface area of the toner per 1 cm.sup.3 determined by a BET method is expressed by A (m.sup.2/ g) and a specific gravity of the particle is expressed by D (g/cm.sup.3), A of the particles stands in a range expressed by an equation, 7/(D.multidot.d).ltoreq.A.ltoreq.10/(D.multidot.d).An image having a preferable definition can be obtained by improving a resolution of image by making the particle size distribution of toner particles narrow, and providing the toner having an electrification charge at least 10 .mu.C/g with a narrow distribution.
摘要:
The present invention relates to a hydrazone compound of the formula (I) or its salt, a process for its preparation, an intermediate of the formula (II-5), a pesticidal composition containing said hydrazone compound or its salt as the active ingredient, and a pesticidal method of applying an effective amount thereof: ##STR1##
摘要:
An image data coding apparatus performs first and second coding processes. A controller outputs first and second control signals. An orthogonal transform circuit performs orthogonal transform on image data of one screen and generates an transformed output. A quantizing circuit quantizes the transformed output with a predetermined temporary first quantization width upon reception of the first control signal and generates a first quantized output, and quantizes the transformed output with an optimal second quantization width upon reception of the second control signal and generates a second quantized output. An entropy coding circuit codes the first quantized output and generates a first coded output, and codes the second quantized output and generates a second coded output. An amount-of-codes calculator calculates the amount of codes of the first coded output for each block and calculates the amount of codes of one screen based on the amount of codes for each block. An assigned-amount-of-codes determining circuit determines the amount of codes assigned to each block based on the amount of codes for each block and the amount of codes of the one screen, and the target amount of codes. A quantization width predicting circuit predicts the second quantization width based on the amount of codes of the one screen. A coding stop circuit supplies a coding stop signal to the entropy coding circuit when the amount of codes of the second coded output exceeds the assigned amount of codes.
摘要:
Recognition character candidates and their similarities for each character obtained by a character recognition section from an input character string are stored in a first recognition result memory, and recognition character candidates obtained by rotating the corresponding characters through 180 degrees and their similarities are stored in a second recognition result memory. Address pointers for accessing the first and second recognition result memories are stored in an address pointer memory. The first recognition result memory is accessed in accordance with the address pointers read out from the address pointer memory in an ascending order, and the second recognition result memory is accessed in accordance with the address pointers read out from the address pointer memory in a descending order. Coincidences between recognition candidates read out from the first and second recognition result memories and character strings of dictionary words read out from a dictionary memory are computed by a coincidence computing section. A recognition result of the input character string is obtained based on the coincidences.
摘要:
An anchoring device for prestressed concrete. The anchor is made of an outer member which has an inner hole with a cone shaped surface and an inner member which is made up of a plurality of wedges having at least one hole for holding a tension member. Both the inner member and the outer member are made by alternately superposing cloths of glass fibers and carbon fibers; impregnating the cloths with a resin and curing the resin.
摘要:
A laser light flux is divided and synthesized so that its light intensity distribution is changed from a Gaussian distribution to a non-Gaussian distribution. When a laser light flux having a Gaussian distribution is irradiated onto a dividing prism, it is divided into a left part and a right part which are refracted right and left inversely from each other. When the right and left parts are incident on a synthesizing prism, they are refracted again and travel to be overlapped with each other on a recording medium. The light intensity distribution on a segment at the apex of the synthesizing prism is weaker at the central part and stronger at the peripheral part. This is because the light fluxes resulting from the division are inverted in their position so that the central part of the Gaussian distribution is separated left and right while the peripheral part with a weaker light intensity is centered.
摘要:
An intake system for three-rotor type rotary piston engine having first, second and third engine sections, and three rotors, the rotors being in 120-degree phase difference in terms of eccentric shaft rotation, a first communicating passage for communicating the working chamber in which the compression stroke is proceeding in the first engine section and the working chamber in which the intake stroke is proceeding in the second engine section, a second communicating passage for communicating the working chamber in which the compression stroke is proceeding in the second engine section and the working chamber in which the intake stroke is proceeding in the third engine section, and a third communicating passage for communicating the working chamber in which the compression stroke is proceeding in the third engine section and the working chamber in which the intake stroke is proceeding in the third engine section, each communicating passage being provided with a valve for controlling the openings thereof in accordance with the engine load. According to the present invention, there can be obtained an intake system for three-rotor type rotary piston engine capable of uniformly reducing the pumping loss in each engine section and drawing the same amount of intake air from the intake port to each engine section.