摘要:
An acoustic reproduction device includes first speaker units 12 and 15 that emit sound in an inward direction and second speaker units 13 and 16 that emit sound in a forward or outward direction. The first speaker units are arranged at positions symmetrical with respect to a listening center axis, and so are second speaker units. The device further includes first and second processing units that process center channel signals as signals for the first and the second speaker units, respectively. Front channel signals are superimposed on an output signal of the second processing unit. The first processing unit includes a HPF 33 and a first high-shelf block 34 for boosting a high-range component. The second processing unit includes an LPF 38, a low-shelf block 36 for attenuating a low-range component, and a second high-shelf block 37 for attenuating a high-range component. Center channel reproduction sounds arriving from the first speaker unit and the second speaker unit that are closer to a listening position are destructive to each other in the mid-range owing to a phase difference therebetween. It is possible to expand a listening position range where the center sound image localization can be achieved, and to integrate a center speaker into a front speaker system.
摘要:
A rod 1 made of superconducting oxide is soaked in a molten normal conductor 2 to join the rod 1 and the normal conductor 2, whereby a superconducting oxide current lead is prepared. As a result, a contact resistance at the interface between the superconducting oxide and the normal conductor can be reduced. Consequently, Joule's heat at a current lead having a small cross sectional area can be suppressed low, which in turn realizes the reduction of the load on a freezer and the amount of evaporated cooling solvent, with respect to a superconducting coil.
摘要:
A hard film is covered on the outer circumferential surface of a piston ring by means of an arc ion plating. The hard film has a mixture of crystal structure of CrN and crystal structure of Mo.sub.2 N containing oxygen in a solid solution state, and comprises chromium at 40 to 78 percent by weight, molybdenum at 3 to 35 percent by weight, oxygen at 3 to 20 percent by weight and the remainder of nitrogen. The crystal particle size is less than 1 .mu.m. The Vickers hardness is within a range from 1600 to 2500. The film thickness is preferably 1 to 60 .mu.m. Carbon in a solid solution state at 0.5 to 8 percent by weight may be substituted for the oxygen. Alternatively, both oxygen and carbon may be contained in a solid solution state with oxygen at 3 to 20 percent by weight, carbon at 0.5 to 8 percent by weight with the total content of carbon and oxygen within 25 percent by weight.
摘要:
The gene of a human CNP (human C-type natriuretic peptide), as well as the hCNP precursor protein that is encoded by said gene. The hCNP precursor is represented by the following amino acid sequence.Met His Leu Ser Gln Leu Leu Ala Cys Ala - Leu Leu Leu Thr Leu Leu Ser Leu Arg Pro - Ser Glu Ala Lys Pro Gly Ala Pro Pro Lys - Val Pro Arg Thr Pro Pro Ala Glu Glu Leu - Ala Glu Pro Gln Ala Ala Gly Gly Gly Gln - Lys Lys Gly Asp Lys Ala Pro Gly Gly Gly - Gly Ala Asn Leu Lys Gly Asp Arg Ser Arg - Leu Leu Arg Asp Leu Arg Val Asp Thr Lys - Ser Arg Ala Ala Trp Ala Arg Leu Leu Gln - Glu His Pro Asn Ala Arg Lys Tyr Lys Gly - Ala Asn Lys Lys Gly Leu Ser Lys Gly Cys - Phe Gly Leu Lys Leu Asp Arg Ile Gly Ser - Met Ser Gly Leu Gly Cys. The hCNP precursor and its derivatives are novel and have natriuretic and hypotensive activities.
摘要翻译:人CNP(人C型利钠肽)的基因以及由所述基因编码的hCNP前体蛋白。 hCNP前体由以下氨基酸序列表示。 - Met His Leu Ser Gln Leu Leu Ala Cys Ala - - Leu Leu Leu Leu Leu Leu Leu Ser Leu Arg Pro - - Ser Glu Ala Lys Pro Gly Ala Pro Pro Lys - - Val Pro Arg Thr Pro Pro Ala Glu Glu Leu - - Ala Glu Pro Gln Ala Ala Gly Gly Gly Gln - - Lys Lys Gly Asp Lys Ala Pro Gly Gly Gly - - Gly Ala Asn Leu Lys Gly Asp Arg Ser Arg - - Leu Leu Arg Asp Leu Arg Val Asp Thr Lys - - Ser Arg Ala Ala Trp Ala Arg Leu Leu Gln - - Glu His Pro Asn Ala Arg Lys Tyr Lys Gly - - Ala Asn Lys Lys Gly Leu Ser Lys Gly Cys - Phe Gly Leu Lys Leu Asp Arg Ile Gly Ser - - Met Ser Gly Leu Gly Cys。 - hCNP前体及其衍生物是新颖的,具有钠尿和降血压活性。
摘要:
A mobile communication system comprises a mobile station for transmitting packet data. A number of base stations receive the packet data and produce received packet data, respectively. A mobile exchange simultaneously receives a number of received packet data from the base stations and comprises a data quality decision unit for deciding quality of each received packet data to produce a decision result. The data quality decision unit produces an error detection signal when all the received packet data have the frame error. A data selecting unit selects one received packet data having the best quality of these received packet data according to the decision result and produces it as selected packet data. A packet data reproducing unit carries out a predetermined data reproduction operation to reproduce packet data out of a number of the received packet data and supplies it to the data selecting unit as reproduced packet data. A frame error detecting unit detects whether there is a frame error in the reproduced packet data and supplies, upon detection of the frame error, to the data processing unit a frame error detection signal indicating that there is the frame error in the reproduced packet data. The data selecting unit produces the reproduced packet data as the selected packet data in response to the error detection signal.
摘要:
A Cr.sub.2 N film or a mixed Cr.sub.2 N and Cr film formed by physical vapor deposition on the outer circumferential surface of a piston ring which is in contact with the inner circumferential surface of a cylinder. The axial width of the outer circumferential surface of the piston ring is 0.6 mm or less. The nitrogen content of the film is 11 to 17 percent by weight. The Vicker's hardness of the film is in the range of HV1300 to HV2000. The thickness of the film is 3 .mu.m to 30 .mu.m.
摘要:
The present invention is a process to express a target peptide in a large amount and accumulate the target peptide in host cells in the form of inclusion bodies. The process comprises: A) culturing host cells transformed with a plasmid able to express a gene coding for a fusion protein represented in the formula A--L--B, wherein B is a target peptide, A is a protective peptide comprising a 90-210 amino acid fragment E. coli .beta.-galactosidase, and L is a linker peptide positioned between the C-terminus of the protective peptide and the N-terminus of the target peptide and selected so that when the fusion protein is treated by an enzyme or chemical substance, the target peptide is separated, and wherein the protective peptide and linker peptide are selected so that the isoelectric point of the fusion protein in between 4.9 and 6.9; B) obtaining an insoluble fraction comprising inclusion bodies by homogenization of th cultured transformed cells; C) solubilizing the fusion protein in the inclusion bodies by treatment of the insoluble fraction with a solubilizing agent; and, D) cleaving the peptide bond between the C-terminus of the linker peptide and the N-terminus of the target peptide of the solubilized fusion protein to release the target peptide from the other peptides followed by purification of the target peptide.
摘要:
A bass reproduction speaker apparatus of the present invention includes: a cabinet with an opening, having a division member inside thereof; a speaker unit disposed at the division member; a passive radiator disposed in the opening; an amplifier for driving the speaker unit; a detector for detecting a vibration of a moving system of the speaker unit; and a feedback circuit for feeding back an output signal from the detector to the amplifier.
摘要:
A method of pulling a crystal of a metal oxide is disclosed, in which the growth of the crystal is performed in a liquid phase having a composition which is different from the metal oxide and which contains components constituting the metal oxide. The liquid phase is in contact with a solid phase located at a position separated from the position at which the crystal of the metal oxide grows. The solid phase has a composition different from that of the metal oxide and supplies components constituting the metal oxide to the liquid phase.
摘要:
A method of producing a superconductor of metal oxides having the following composition:(M.sub.1-x Ca.sub.x)(Ba.sub.1-y Sr.sub.y).sub.2 Cu.sub.4 O.sub.8wherein M stands for a rare earth element, x is 0 or a positive number of less than 1 and y is 0 or a positive number of less than 1, is disclosed, which includes hydrdolyzing an organic solvent solution or dispersion containing (a) alkoxide or fine particulate of a hydroxide of the rare earth element M, (b) alkoxides orfine particulate of hydroxides of Ca, Ba and Sr and (c) alkoxide, nitrate or fine particulate of hydroxide of copper in presence of water and nitrate ions. The alkoxides or hydroxides of Ca and Sr are present only when x and y are not zero, respectively. The hydrolyzed product is then dried, shaped and pyrolyzed to obtain the superconductor.