摘要:
Problem: To provide a microorganism with an ability to produce deoxy polyol dehydrogenase.Means for Resolution: A microorganism belonging to genus Enterobacter with an ability to produce a dehydrogenase for deoxy polyol of the same structure at the positions C2 and C3 as that of ribitol or L-iditol. The bacterial cell IK7 of the genus Enterobacter (accession No. NITE P-271). A method for producing deoxy ketose comprising allowing a culture containing the deoxy polyol dehydrogenase obtained by the culturing of the microorganism of the invention or allowing the deoxy polyol dehydrogenase to react with a solution containing deoxy polyol of the same structure at the positions C2 and C3 as that of ribitol or L-iditol to oxidize deoxy polyol to produce the corresponding deoxy ketose and then collecting the deoxy ketose. The deoxy polyol is 1-deoxy-D-allitol, while the corresponding deoxy ketose is 1-deoxy-L-psicose. Otherwise, the deoxy polyol is L-rhamnitol, while the corresponding deoxy ketose is 1-deoxy-L-fructose.
摘要:
The present invention provides novel glycopeptides antibiotic derivatives comprising a sugar residue (I) represented by the formula: (wherein n is an integer of 1 to 5: Sugs are each independently a monosaccharide, (Sug)n is a divalent sugar residue formed by binding of same or different 1 to 5 monosaccharides; RA1 is optionally substituted lower alkyl, optionally substituted lower alkenyl, or optionally substituted cycloalkyl; and RE is OH or NHAc (Ac is acetyl)) is bound to an aromatic ring of the fourth amino acid residue in the glycopeptide skeleton. These derivatives have antibacterial activity against vancomycin-resistant bacteria.
摘要:
There is provided a video display apparatus the display screen of which is configured by combining a plurality of video display units in each of which light emitting display elements are arranged in a matrix manner; in the video display apparatus, there is provided a luminance correction means that corrects the luminance of video data situated in a correction subject area including respective end regions, of a first video display unit and a second video display unit, that face each other, in accordance with the spacing between the first video display unit and the second video display unit; and a linear noise that is caused at a seam portion between the video display units is suppressed, whereby the image quality of a video to be displayed can be raised.
摘要:
This DC-DC converter circuit includes: first and second switching elements (S1, S2); an output transformer (T) that includes a first primary winding (P1) connected in series between the positive electrode sides of the first and second switching elements (S1, S2), a second primary winding (P2) connected in series between their negative electrode sides, a secondary winding (S) for obtaining an output voltage, and tertiary windings (n3, n4); a first voltage source (C1), connected between a first connection point at which the first primary winding (P1) is connected to the second switching element (S2) and the first switching element (S1), that applies a voltage to the first switching element via the first primary winding; a second voltage source (C2) connected to locations symmetric with those of the first voltage source (C1); and a control unit (CT) that turns the first and second switching elements (S1, S2) alternatingly ON and OFF, and first and second regeneration snubber circuits (SN1, SN2) for regenerating the charge in snubber capacitors (C3, C4) to the voltage sources (C1, C2); and these regeneration snubber circuits (SN1, SN2) include third and fourth switching elements (S3, S4) driven by the output voltages of the tertiary windings (n3, n4).
摘要:
A porous material is provided, including a connected structure formed by combining silicon carbide aggregate particles with cordierite, which is a combining material in a state to hold a large number of pores, and having a porosity of 52 to 70% and a median pore diameter of 15 to 30 μm. The porous material has a high porosity and a high strength and has a remarkably low possibility of including defective portions, such as cuts and the like which cause liquid leakage when the material is used as a filter.
摘要:
According to the present invention, a porous material is characterized by comprising: a connected structure formed by combining silicon carbide which is an aggregate with cordierite which is a combining material in a state to hold a large number of pores, and having a porosity of 52 to 70% and a median pore diameter of 15 to 30 μm, and is a porous material having a high porosity and a high strength and having a remarkably low possibility of including defective portions such as cuts and the like causing liquid leakage in a case where the material is used as a filter.
摘要:
A highly heat-conductive Si-containing material containing a Si phase whose lattice constant at room temperature is controlled at a level of more than 0.54302 nm but 0.54311 nm or less. Firing is conducted using a kiln material containing no B compound. With this highly heat-conductive Si-containing material and the process for production thereof, a reduction in heat conductivity can be prevented and a high heat conductivity can be exhibited stably.
摘要:
A silicon carbide based porous material (1) containing silicon carbide particles (2) as an aggregate and metallic silicon (3) as a bonding material and having a number of pores (5) formed by them, characterized in that it has an oxide phase (4) in at least a part of the pore (5), and the oxide phase (4) contains respective oxides of silicon, aluminum and an alkaline earth metal and contains substantially no alkaline earth metal silicate crystal phase; a method for producing the above porous material; and a honeycomb structure comprising the silicon carbide based porous material. The above porous material is capable of effectively inhibiting the corrosion by an acid (especially acetic acid) used in the operation of carrying a catalyst, that is, is improved in the resistance to an acid.
摘要:
To detect boundaries between the content of a telecast, for example, and commercial messages, included in the telecast, highly accurately when the user is deleting the commercial messages. A data processor includes: a picture level detecting section, which receives a video signal including a plurality of pictures and detects the signal level of a predetermined one of the pictures based on the signal; a frame memory section for storing the data of the pictures; and a controller for adding index information. The picture level detecting section specifies a video changing point by reference to the respective signal levels of multiple consecutive pictures and the controller adds the index information to a data location, corresponding to the changing point, in a data stream.
摘要:
A data processor includes: a stream extracting section for acquiring a first data stream and then a second data stream; a packet inserting section, which makes a dummy packet, having a dummy identifier that is different from any of the identifiers of packets in a stream, and which inserts the dummy packet between the last packet of the first data stream and the first packet of the second data stream; a splitting section for splitting content data into respective types according to the packet identifiers and inserting error data, which is different from the content data, upon the detection of the dummy identifier; and a decoder, which plays back the content data of the data stream on the basis of a playback unit and, on detecting the error data, discards incomplete content data at the end of the first data stream and a portion of the content data of the second data stream up to the first header thereof such that those content data are not played back.