摘要:
A microorganism which has a gene encoding an enzyme in which feedback inhibition is desensitized by substitution of one or two amino acids in PRPP amidotransferase encoded by purF of Escherichia coli, a gene encoding a protein which is an inactivated repressor of purine nucleotide biosynthesis encoded by purR, a gene encoding an enzyme which is inactivated purine nucleoside phosphorylase encoded by deoD, a gene encoding an enzyme which is inactivated succinyl-AMP synthase encoded by purA, a gene encoding an enzyme which is inactivated 6-phosphogluconate dehydrase encoded by edd, a gene encoding an enzyme which is inactivated phosphoglucose isomerase encoded by pgi and like is bred and a purine nucleoside is produced by culturing the microorganism.
摘要:
In an electrode substrate 1, the surface of a metal circuit layer 12 is covered and insulated by an insulating layer 14. In a photoelectric conversion element that uses this electrode substrate 1, the metal circuit layer is reliably shielded from an electrolyte solution or the like so that corrosion and leak current thereof is effectively prevented, and the photoelectric conversion efficiency can be improved. The insulating layer 14 is preferably made of a material that contains a glass component, and is particularly preferably formed by printing a paste that contains glass frit. The metal circuit layer 12 is preferably formed using a printing method.
摘要:
A video signal processing apparatus receives a video signal containing at least a luminance signal and a color difference signal. A trap filter attenuates a frequency band of the color difference signal to separate the luminance signal from the video signal. A bandpass filter attenuates a frequency band of the luminance signal to separate the color difference signal from the video signal. The trap filter is constituted by a switched capacitor filter that outputs the luminance signal with a delay time equivalent to a time difference between a delay time of the processing performed in a succeeding luminance signal processing circuit and a delay time of the processing performed in a color difference signal processing circuit. With this arrangement, the circuit scale of a filter circuit can be reduced and frequency characteristics of the filter can be stabilized.
摘要:
A solar cell and photovoltaic power generation apparatus including a transparent electrically conductive film, a semiconductor provided on the transparent electrically conductive film, a conductive film opposing the semiconductor, and an electrolyte solution filled between the semiconductor and the conductive film. Metal ions, such as silver ions, may be dissolved in the electrolyte solution. When light is incident on the cell, the metal ions cause an oxidation-reduction reaction in the electrolyte solution and the cell is charged. When the open-circuit voltage decreases because the amount of incident light drops or light is blocked, the cell discharges to function as a secondary cell.
摘要:
A video signal processing circuit comprises a luminance detector circuit for detecting the luminance of a video signal that is input and a contrast adjustment circuit for changing the contrast ratio of each chrominance signal in accordance with a detection result of the luminance detector circuit. As a result, when the luminance is low, for example, the contrast ratio can be increased in accordance with the luminance so that a clearer video image can be obtained.
摘要:
Heterocyclic derivatives of the formula (I) wherein each symbol is as defined in the specification, pharmaceutically acceptable salts thereof and method of producing them. Pharmaceutical compositions containing the heterocyclic derivative or a pharmaceutically acceptable salt thereof, particularly, ACAT inhibitors and lipoperoxidation inhibitors. The heterocyclic derivatives and pharmaceutically acceptable salts thereof of the present invention show superior ACAT inhibitory activity and lipoperoxidation inhibitory activity, and are useful as ACAT inhibitors and hyperlipemia inhibitors. To be specific, they are useful for the prevention and treatment of arteriosclerotic lesions of arteriosclerosis, hyperlipemia and diabetes, as well as ischemic diseases of brain, heart and the like.
摘要:
A carbapenem compound of the formula (I) wherein R1 is a group hydrolyzable in the body, R2 is selected from the group consisting of aryl groups optionally substituted by 1-3 alkyl groups having 1-4 carbon atoms, 1-alkanoyloxyalkyl, 1-alkoxycarbonyloxyalkyl, phthalidyl and 5-methyl-2-oxo-1,3-dioxolen-4-ylmethyl, R3 and R4 are lower alkyl groups which may be the same or different or instead form a 4- to 6-membered cyclic amino with the adjacent nitrogen selected from the group consisting of azetidinyl, pyrrolidinyl and piperidinyl or a pharmaceutically acceptable salt thereof The carbapenem compound (I) and a pharmaceutically acceptable salt thereof of the present invention show superior absorption from digestive tract by oral administration, and sufficient antibacterial activity against a wide variety of bacterial species. Thus, they are extremely useful as agents for the prophylaxis and treatment of infectious diseases, particularly bacterial infectious diseases. Said agents for the prophylaxis and treatment of infectious diseases can be used as agents for the prophylaxis and treatment of the diseases caused by bacteria (e.g., suppurative diseases, respiratory infectious diseases, inflammatory diseases of biliary tract, urinary tract infection and the like) in warm-blooded animals inclusive of human (e.g., dog, cat, cow, horse, rat, mouse and the like).
摘要:
A multidirectional controller includes: a substrate having a first end portion and a second end portion, which sways via a supporting point provided at the first end portion; an electronic part provided at the second end portion, which includes a control portion which is manipulated in a predetermined direction in which the electronic part causes the substrate to sway when the electronic part is manipulated; a supporting member for supporting the substrate; and a switch provided so as to be switched in response to the sway of the substrate, when the electronic part is manipulated in the predetermined direction.
摘要:
An apparatus for disassembling and assembling a gas turbine combustor comprises a hand assembly for holding a combustor component of a gas turbine, an inserting and drawing section which supports the hand assembly and moves the same in parallel to a central axis of the combustor component and a retainer for securing the inserting and drawing section onto a casing which constitutes an outer section of the gas turbine.
摘要:
Heterocyclic derivatives of the formula (I) ##STR1## wherein each symbol is as defined in the specification, pharmaceutically acceptable salts thereof and method of producing them. Pharmaceutical compositions containing the heterocyclic derivative or a pharmaceutically acceptable salt thereof, particularly, ACAT inhibitors and lipoperoxidation inhibitors. The heterocyclic derivatives and pharmaceutically acceptable salts thereof of the present invention show superior ACAT inhibitory activity and lipoperoxidation inhibitory activity, and are useful as ACAT inhibitors and hyperlipemia inhibitors.To be specific, they are useful for the prevention and treatment of arteriosclerotic lesions of arteriosclerosis, hyperlipemia and diabetes, as well as ischemic diseases of brain, heart and the like.