摘要:
The present invention relates to a resin paste composition including an organic compound, and a granular aluminum powder having an average particle diameter of from 2 to 10 μm and a flake-shaped silver powder having an average particle diameter of from 1 to 5 μm which are uniformly dispersed in the organic compound, and a semiconductor device manufactured by bonding a semiconductor element onto a supporting member through the resin paste composition and then encapsulating the resulting bonded product. According to the present invention, it is possible to provide a resin paste composition used for bonding an element such as semiconductor chips onto a lead frame which is excellent in not only electrical conductivity and bonding property but also working efficiency without using a large amount of rare and expensive silver, and a semiconductor device having a high productivity and a high reliability.
摘要:
Disclosed are an image generating apparatus and an image generating method with which the size of a storage region required to display animated images can be suppressed. In the image generating apparatus (1), processing blocks (12, 16, 17) configuring an image generation unit obtain object data segment (130p) and a display operation pattern to be applied to the object data segment (130p) from data storage units (13, 14), in accordance with a specified picture-plane configuration information item (150i) , and generate animated images of the object data segment (130p) in accordance with the object data segment (130p) and the display operation pattern.
摘要:
A voltage control circuit accepts an input voltage and produces a regulated output voltage. Embodiments provide improved responsiveness to variations in input voltage, load current, and ambient temperature. Exemplary embodiments include an NPN transistor connected between the input and output terminals, which is controlled by a feedback circuit. In an embodiment, the feedback circuit includes a PMOS transistor and in another embodiment the feedback circuit includes a PNP transistor.
摘要:
A process for producing inorganic spheres, which comprises injecting an aqueous liquid containing an inorganic compound through an inlet hole into an organic liquid which flows at a flow rate of from 0.001 to 2 m/s in a laminar flow state in a flow path to form a W/O type emulsion, and solidifying the aqueous liquid containing an inorganic compound in the W/O type emulsion.
摘要翻译:一种无机球体的制造方法,其特征在于,将含有无机化合物的含水液体通过入口孔注入到以流路为流量的0.001〜2m / s的有机液体中,形成流路 W / O型乳液,并且在W / O型乳液中固化含有无机化合物的含水液体。
摘要:
A carbonaceous material having a total pore volume of from 0.5 to 1.5 cm3/g per unit mass, a volume of micropores having diameters of from 10 to 20 Å of from 10 to 45% based on the total pore volume, a volume of mesopores having diameters of from 20 to 200 Å of from 35 to 65% based on the total pore volume, a volume of macropores having diameters exceeding 200 Å of not more than 15% based on the total pore volume, and a specific surface area of from 1,000 to 2,500 m2/g. The carbonaceous material is incorporated into an electric double layer capacitor to provide increased capacitance.
摘要:
L-Ascorbic acid-2-O-maleic acid-&agr;-tocopherol diester.1-propanol adduct or its pharmacologically acceptable salt; cosmetic components, antioxidants, radical scavengers, anti-inflammatory agents and elastase inhibitors containing the same as the active ingredient; and a process for producing the above-described adduct characterized by comprising extracting a solution containing L-ascorbic acid-2-O-maleic acid-&agr;-tocopherol diester with a solvent, distilling off the solvent, and adding to the residue 1-propanol mixed with an organic solvent followed by crystallization.
摘要:
Decarbamylases are provided capable of producing D-.alpha.-amino acids by hydrolysis of N-carbamyl-D-.alpha.-amino acids. A source of the decarbamylases is recombinant microorganisms produced by gene manipulation methods. Decarbamylases having improved thermostability can be obtained in which amino acids at a thermostability-related site of a natural decarbamylase have been replaced with other amino acids by mutating a DNA fragment encoding the natural decarbamylase. Recombinant DNA is obtained from a vector DNA and a DNA fragment encoding a natural decarbamylase where the nucleic acid sequence encoding an amino acid at a thermostability-related site is replaced with a nucleic acid sequence encoding another amino acid. The recombinant DNA is used to produce transformants that produce thermostable decarbamylases. The decarbamylases may be immobilized in purified, partially-purified or crude form or in the form of decarbamylase-containing microbial cells on a support such as a polymer having ion exchange groups or covalent bonding groups. The presence of an antioxidant such as dithiothreitol results in an immobilized decarbamylase preparation that can be repeatedly used 30 times or more.
摘要:
A vehicle speed control device for providing constant speed traveling including a main switch circuit for enabling the constant speed traveling, a CPU coupled to the main switch circuit for providing a constant speed traveling control signal, and an actuator for activating a throttle value coupled thereto in response to the control signal output by the CPU. An electromagnetic relay coupled to the actuator inhibits the actuator in response to several signals including a signal from a timer circuit and the timer circuit provides its signal for a time after the start of the engine of the vehicle that is related to a sensed temperature in the engine.
摘要:
Anti-ulcer agents containing isoprenoid derivatives are provided. The isoprenoid derivatives are represented by the formula: ##STR1## wherein: R represents a group of formula ##STR2## In the above formula, R.sub.1, R.sub.2 and R.sub.3 may be the same or different each other and each represents a hydrogen atom, a hydroxy group, a lower alkanoyloxy group, a lower alkyl group or a lower alkoxy group, provided that two or more of them do not represent hydrogen atoms at the same time; R.sub.4 and R.sub.5 may be the same or different each other and each represents a hydrogen atom, a hydroxy group or a lower alkanoyloxy group represents the signal or the double bond between the carbon atoms; m represents 0 or 1; n represents 0 or an integer of from 1 to 9, provided that the sum of m and n is an integer of from 1 to 9.
摘要:
A printed circuit board having a circuit pattern formed on at least one of the first and second faces of a substrate and having characters and symbols representing components to be mounted on said substrate printed on the first face and the second face of the substrate, wherein the characters printed on the first face have been printed in the reversed images in about the corresponding positions of the back face. Since the characters printed on the first face of the printed circuit board are also printed in the reversed images in the immediately corresponding positions of the second face of the board, these characters can be used as indexes to find a particular position on the printed circuit board, and the first or second face can be instantly distinguished from the second or first face. The present invention also provides a method for the fabrication of a printed circuit board comprising the steps of printing on the first face of a substrate which has a circuit pattern formed on at least one of the first and second faces of the substrate with a first printing plate on which characters are disposed, preparing a second printing plate having the reversed character images by turning over the above first printing plate to reverse the normal characters, and printing the reversed character images on the second face of the substrate with the second printing plate.