摘要:
The present invention includes a loudspeaker system in which sound radiation axes of two speakers in a single loudspeaker unit form an angle with respect to each other in a horizontal plane to increase the size of a listening area. The horizontal angle can be formed by orienting the sound axes of speakers in the loudspeaker unit at an angle in the range of 15 to 45 degrees from each other. The system also includes a phase adjustment system which adjusts the phase of the speakers in each loudspeaker unit so that the phase of the sound from each speaker in each loudspeaker unit is properly adjusted throughout the increased listening area to provide increased sound presence or spread.
摘要:
A novel method of very efficiently elevating the yield of oligosacchrides containing α-galactosyl, compared with the conventional methods, which comprises treating galactose or a galactose-containing material with a specific α-galactosidase and thus performing a dehydrocondensation reaction at a high substrate concentration. Anti-candida compositions originating in foods, having a high safety and excellent anti-candida effect and not being restricted in the supply, which contain as the active ingredient oligosacchrides obtained by treating galactose or a galactose-containing material with an α-galactosidase and thus performing a dehydrocondensation.
摘要:
Disclosed are novel branched cyclodextrins having any of an N-acetylglucosamine group, a glucosaminyl group, an N-acetylgalactosaminyl group and a galactosaminyl group as bonded to the hydroxyl group of the cyclodextrin ring by .beta.-bonding therebetween, and their salts. The novel branched cyclodextrins are produced by reacting a solution containing a cyclodextrin and an N-acetylglucosamine or N-acetylgalactosamine with an N-acetylhexosaminidase, and optionally deacetylating the resulting product.
摘要:
Disclosed herein is a ribbon cassette for use with a printer, including a cassette case detachably mounted in the printer and an ink ribbon stored in the cassette case and partially exposed to face a print head provided in the printer. The ribbon cassette further includes a ribbon take-up member rotatably supported in the cassette case, a driven member rotatably supported in the cassette case and meshing with the ribbon take-up member through the ink ribbon, and a power transmitting member provided in the ribbon take-up member to connect the ribbon take-up member to a ribbon driving shaft provided in the printer. A breaking strength of the power transmitting member against a load from the ink ribbon is set smaller than that of the ribbon driving shaft. Accordingly, in the event that ribbon jam occurs, the power transmitting member breaks to thereby prevent fracture of the ribbon driving shaft in the printer.
摘要:
A multi-color ribbon cassette position adjusting apparatus comprises a carrier having a print head, a cassette mounting member rockably supported on the carrier, and a fine adjustment mechanism attached to the cassette mounting member, for finely rocking the mounting member. The fine adjustment mechanism includes a guide member fixed to the cassette mounting member, a follower piece guided by the guide member to engage a helical cam for shifting the position of the cassette mounting member, and a position adjusting member for relatively moving the guide member and the follower piece.
摘要:
An object of the invention is to develop galactose or mannose derivatives of docetaxel, etc. having improved solubility and physiological activity, to alleviate burden imposed on patients and to provide effective therapeutic drug for tumors. The present invention provides taxoid derivatives comprising any of paclitaxel, docetaxel and 10-deacetyl-baccatin III to which galactose or mannose is linked through a spacer, and methods for producing taxoid derivatives comprising reacting paclitaxel, docetaxel or 10-deacetyl-baccatin III with tetrabenzyl acetyloxygalactoside or tetrabenzyl acetyloxymannoside, subjecting the product to debenzylation reaction, and optionally to detriethylsilylation reaction.
摘要:
A taxoid compound represented by general formula (I) ##STR1## where the symbols R.sup.1, R.sup.2, R.sup.3, R.sup.4, Bz, and Ac have specified meanings. Also, a method for producing the taxoid derivative from a baccatin derivative having a .beta.-ketoester group at the 13-position by transesterification and a method for producing taxoid compound such as paclitaxel from the taxoid derivative under mild condition are disclosed.
摘要:
In a printer having a platen, a print head disposed opposite to the platen, and a ribbon mask fixedly provided on the print head and having a masking plate provided with an aperture to expose only the front end of the print head to the platen, an ink ribbon is extended through a space between the platen and the print head, and the masking plate is disposed between the platen and the ink ribbon to shield a recording sheet wound round the platen from the ink ribbon. The aperture of the masking plate has inclined edges inclined to a direction perpendicular to the direction of movement of the print head so as to intersect a platen center obliquely. In case the side edge of a floating portion of the recording sheet is caught in the aperture of the masking plate while the print head is moved, the side edge slides along the inclined edge to escape from the aperture, so that the side edge is not caught in the aperture of the masking plate.
摘要:
An enzymatic method for the preparation of a fructose-containing oligosaccharide, in which a .beta.-fructofuranosidase obtained by culturing Arthrobacter sp. K-1 (FERM BP-3192) as an enzyme is reacted on sucrose, raffinose or stachyose as the donor in the presence of an aldose or ketose as the receptor. The enzyme is characterized by:(1) activity on sucrose for the transglycosidation of a fructosyl group to the receptor in the presence of a monosaccharide, sugar alcohol, alkyl alcohol, glycoside or oligosaccharide;(2) activity for the decomposition of sucrose, elrose, neokestose, xylsucrose, raffinose and stachyose with inactivity on a saccharide selected from the group consisting of 1-kestose, nistose, inulobiose and levan biose;(3) optimum pH of 6.5 to 6.8 at 40.degree. C. with stability at a pH of 5.5 to 10;(4) optimum temperature of 55.degree. C. at a pH of 6.5 exhibiting at least 70% of residual activity at 60.degree. C.;(5) susceptibility to inhibition by the ions of silver, mercury, zinc, copper and tin;(6) two molecular weights of 52,000.+-.2,500 and 58,000.+-.2,500; and(7) two isoelectric points of pH 4.3 and pH 4.6.
摘要:
Disclosed are ursodeoxycholic acid derivatives having an increased solubility in water, and methods for producing the derivatives. To produce the derivatives, ursodeoxycholic acid is protected at its carboxyl group with a benzyl group, then reacted with tetrabenzyl-acetic acid-oxyglucoside of the following formula (1), and de-benzylated; or ursodeoxycholic acid is protected at its hydroxyl group with a t-butyldimethylsilyl group, then reacted with tetrabenzyl-2-hydroxyethyloxyglucoside of the following formula (2), and de-t-butyldimethylsilylated and de-benzylated. ##STR1##