摘要:
A silver halide light sensitive color photographic material is disclosed, comprising a support having thereon a silver halide emulsion layer, the photographic material further comprising a 2-equivalent yellow coupler exhibiting superior dye forming capability and enhanced solubility in a solvent, and represented by the following formula:
摘要:
Received signal strength detecting means 109 and 110 detect received signal strength of the antennas of the respective terminals. A transmission antenna selector 111 selects an antenna with a maximum received signal strength with respect to the respective communication destinations, and when there is a plurality of communication destinations having the same antenna with a maximum received signal strength, the transmission antenna selector selects transmission antennas to be different from each other based on the received signal strength of the antennas with the second largest received signal strength, and an internal switch of a transmission antenna change device 114 is changed based on the selection result. This eliminates the need for providing mixers without reducing transmission diversity effect, and results in a reduction of a maximum output of a transmission amplifier.
摘要:
An optical transmission equipment for use in an optical transmission system, having an optical amplifier (10A), comprising: a first optical doped fiber (1A); a second optical doped fiber (1B); a third optical doped fiber (1C); an optical isolator (6) of bringing loss in the optical signal, being provided between the first optical doped fiber and the second optical doped fiber; a dispersion compensator (7) being provided between the second optical doped fiber and the third optical doped fiber; and a pumping light source (2) being optically connected to so that the optical doped fibers (1A, 1B, 1C) are excited in common.
摘要:
Disclosed is a method of joining metallic members together. The metallic members are coated with an undercoat composed of an alloy of tin and zinc and contacted with each other through a mixture containing a solder comprising tin and zinc and a flux, while heating the metallic members to melt the solder. Then the molten solder is solidified to join the metallic members. Here, the ratio of zinc in the undercoat is represented by x (% by weight), the ratio of zinc in the solder is represented by y (% by weight), and the ratio, x, and the ratio, y, are values within an area enclosed by the line A or B in FIG. 1, which satisfies the formulas: 1≦x≦20, 3≦y≦13 and 3≦(x+y)/2≦13, or formulas: 0.1≦x≦25, 2≦y≦15 and 2≦(x+y)/2≦15.
摘要翻译:公开了将金属构件连接在一起的方法。 金属构件涂覆有由锡和锌的合金构成的底涂层,并通过包含锡和锌的焊料和助熔剂的混合物彼此接触,同时加热金属构件以熔化焊料。 然后将熔融的焊料固化,以将金属构件接合。 这里,底涂层中的锌的比例由x(重量%)表示,焊料中的锌的比例由y(重量%)表示,x的比例和y的比例为y 在由图1中的线A或B包围的区域内。 1,其满足以下公式:1 <= x <= 20,3 <= y <= 13和3 <=(x + y)/ 2 <= 13或式:0.1 <= x <= 25,2 = y <= 15和2 <=(x + y)/ 2 <= 15。
摘要:
A method of cutting metal materials and non-metal materials in a non-combustible gas atmosphere, the method including forming a non-combustible gas atmosphere, providing the non-combustible gas atmosphere to at least one of a cutting part of a machine tool and an area adjacent to the cutting part, and machining the metal materials and the non-metal materials using the cutting part, and where the non-combustible gas includes one of nitrogen gas and carbon dioxide gas, and where the non-combustible gas occupies a proportion of at least 90% of the non-combustible gas atmosphere.
摘要:
An amide derivative represented by the following general formula (I) or a salt thereof and a pharmaceutical composition containing the amide derivative and a pharmaceutically acceptable vehicle. The symbols in the formula have the following meanings wherein A: heteroarylene; X: bond, O, S, —NR5—, —NR5CO—, —NR5CONH—, —NR5SO2— or —NR5C(═NH)NH—; R1: —H, -optionally substituted lower alkyl, -optionally substituted aryl, -optionally substituted heteroaryl or -optionally substituted cycloalkyl; R2a, R2b: —H or -lower alkyl, which may be the same or different; R3: —H or -lower alkyl; R4a, R4b: —H or —OH, which may be the same different, or R4a and R4b are taken together to form ═O or ═N—O—lower alkyl; and R5: —H or -lower alkyl.
摘要:
The present invention provides a simple and inexpensive method for producing &agr;-hydroxy-&bgr;-aminocarboxylic acids and their esters. An ester of an N-protected &agr;-amino acid ester is converted into a &bgr;-ketosulfoxide, which is then processed with an acid to give an &agr;-ketohemimercaptal. Next, this is acylated and then processed with a base to obtain an N-protected &agr;-acyloxy-&bgr;-amino-thioester, which is then saponified to obtain an intended compound. According to the method of the present invention, it is possible to produce &agr;-hydroxy-&bgr;-aminocarboxylic acid derivatives, which are intermediates in producing various HIV protease inhibitors, renin inhibitors and carcinostatics, from a-amino acids. The method comprises reduced reaction steps, the selectivity in the method to give the intended product is high, and the yield of the product obtained is high.
摘要:
A compound selected from the group consisting of(a) optically active 2-hydroxymethyl-3-phenylpropionic acid cis-1-amino-2-indanol salt,(b) optically active 2-hydroxymethyl-3-phenylpropionic acid .alpha.-methylbenzylamine salt,(c) optically active 2-hydroxymethyl-3-phenylpropionic acid 3-methyl-2-phenyl-1-butylamine salt,(d) a salt of (S)-2-hydroxymethyl-3-phenylpropionic acid with (1R, 2S)-(+)-cis-1-amino-2-indanol,(e) a salt of (R)-2-hydroxymethyl-3-phenylpropionic acid with (1S, 2R)-(-)-cis-1-amino-2-indanol,(f) a salt of (R)-2-hydroxymethyl-3-phenylpropionic acid with (S)-(-)-.alpha.-methylbenzylamine,(g) a salt of (S)-2-hydroxymethyl-3-phenylpropionic acid with (R)-(+)-.alpha.-methylbenzylamine,(h) a salt of (S)-2-hydroxymethyl-3-phenylpropionic acid with (S)-(-)-3-methyl-2-phenyl-1-butylamine, and(i) a salt of (R)-2-hydroxymethyl-3-phenylpropionic acid with (R)-(+)-3-methyl-2-phenyl-1-butylamine.
摘要:
A motorcycle is provided with a cowling brace having a sub-frame structure for attaching a cowling and a cowling peripheral part to a front head portion of a body frame of a motorcycle. The cowling brace is composed of a front brace member integrally formed of a synthetic resin material, a rear brace member assembled by using a metal material to be combined with the front brace member, a front fixture member formed integrally with the front brace member and adapted to fix the cowling and the cowling peripheral part, and a rear fixture member formed to rear brace member and adapted to fix the rear brace member to the body frame of the motorcycle.