摘要:
The present invention relates to compounds represented by the formula: ##STR1## wherein R.sup.1 is (1) an optionally substituted alkyl group which may be bonded through a hetero atom, (2) an optionally substituted acyl group, (3) an alkylsulfonyl group, (4) an alkylsulfinyl group, or (5) an optionally substituted sulfamoyl group; A is --N.dbd. or -CH.dbd.; R.sup.2 is a hydrogen atom or an alkyl group which may optionally be substituted with halogen and which may be bonded through a hetero atom;X.sup.1 is halogen or a lower alkyl group;X.sup.2 is a hydrogen atom or a fluorine atom;R.sup.3 is a hydrogen atom, halogen or a lower alkyl group;and R.sup.4 is a hydrogen atom, an optionally substituted alkyl group or an acyl group, provided that when R.sup.1 is (1) a C.sub.1-4 alkanoyl group, (2) benzoyl, (3) trifluoroacetyl, (4) sulfamoyl which may optionally be substituted with a C.sub.1-4 alkyl group, (5) a C.sub.1-4 alkyl group which may optionally be substituted with hydroxy, halogen or a C.sub.1-3 alkoxy group, (6) amino which is substituted with a C.sub.14 alkyl group, A is --CH.dbd., R.sup.2 is a hydrogen atom, X.sup.1 is a chlorine atom, R.sup.3 is a chlorine atom, and X.sup.2 is a hydrogen atom, then R.sup.4 is an optionally substituted alkyl group or an optionally substituted acyl group; or salts thereof, their production and use thereof. These compounds and salts thereof are useful as anti-protozoal agents.
摘要:
The present invention relates to compounds represented by the formula: wherein ring H represents an optionally substituted aromatic heterocyclic group or an optionally substituted alicyclic hydrocarbon group; X and Y independently represent a single bond, —O—, a group of the formula: —S(O)m— wherein m is 0, 1 or 2, a group of the formula: —NR8— wherein R8 represents a hydrogen atom, an alkyl group or an acyl group, —CO— or an optionally substituted methylene group; —A—B— represents —N═CH—, —CH═N—, —N═N— or —CH═CH—; R1 represents a hydrogen atom, a halogen atom, an optionally substituted alkyl group which may be bonded through a hetero atom or an acyl group; R2 and R3 independently represent a hydrogen atom, a halogen atom or an optionally substituted alkyl group; R4 represents a hydrogen atom or a halogen atom; R5 represents a hydrogen atom, an optionally substituted alkyl group or an acyl group; R6 and R7 independently represent a hydrogen atom or R6 and R7 may form a chemical bond together with each other; and D represents —CH2— or —CO—; or a salt thereof. These compounds and salts thereof are useful as anti-protozoal agents.
摘要:
A fuel cell separator having excellent corrosion resistance, electric conductivity and durability comprising a substrate made of austenitic stainless steel, and a nitride layer formed on a surface of the substrate in contact with an oxygen electrode or a current collector on the oxygen electrode side, the nitride layer comprising a solid solution compound phase composed of an Fe4N crystal, in which part of Fe is substituted by at least Cr and Ni.
摘要:
A weak acid skin cleanser containing an alkali salt of N-acylamino acid and maltitolhydroxy aliphatic ether, or a hydroxy ether carboxylic acid-based anionic surfactant, or polyethylene powder, as well as water and an organic acid. Also, a weak acid skin cleanser containing an alkali salt of N-acylamino acid, a betaine-based ampholytic surfactant, water, and an organic acid. The weak acid skin cleansers mentioned above provide creamy and rich foaming, rapid rinsing, refreshing sensation during use, moist skin sensation after cleaning, and shelf stability of the base agent (separation, offensive odor, discoloration, etc.), and are free of increasing hardness over time at room temperature and below.
摘要:
A composition for external use which contains xyloglucan. It preferably further contains an ultraviolet shielding agent, a thickening polysaccharide, a thickening polysaccharide and sericin, a carboxyvinylpolymer, or an alkyl-modified carboxyvinylpolymer.
摘要:
A piston ring mounted in the ring groove of an aluminum alloy piston does not cause aluminum adhesion during the long-term use. The piston ring includes a resin film deposited on at least one of an upper face and a lower face. The resin film contains from 0.5 to 20% by volume of carbon black particles and from 3 to 30% by volume of solid lubricant particles with respect to the total volume of the resin film. The carbon black particles preferably contain one or both of graphitized carbon black particles and composite graphite black particles.
摘要:
A fuel cell separator having excellent corrosion resistance, electric conductivity and durability comprising a substrate made of austenitic stainless steel, and a nitride layer formed on a surface of the substrate in contact with an oxygen electrode or a current collector on the oxygen electrode side, the nitride layer comprising a solid solution compound phase composed of an Fe4N crystal, in which part of Fe is substituted by at least Cr and Ni.
摘要翻译:一种具有优异的耐腐蚀性,导电性和耐久性的燃料电池隔板,包括由奥氏体不锈钢制成的基板和形成在与氧电极侧的氧电极或集电体接触的基板的表面上的氮化物层, 氮化物层,其包含由Fe 4 N 3结晶构成的固溶体化合物相,其中部分Fe被至少Cr和Ni取代。
摘要:
A method for supplying hydrogen to a fuel cell comprising (a) a medium-reducing step, which comprises reforming a liquid fuel to generate a reformed gas containing hydrogen and carbon monoxide, and supplying the reformed gas to a hydrogen-purifying unit containing a carbon monoxide-oxidizing catalyst and a hydrogen-generating medium to reduce the hydrogen-generating medium and oxidize the carbon monoxide; and (b) a medium-oxidizing step, which comprises supplying steam to a hydrogen-purifying unit containing a carbon monoxide-oxidizing catalyst and a hydrogen-generating medium, to generate hydrogen while oxidizing the hydrogen-generating medium, the medium-reducing step and the medium-oxidizing step being conducted alternately.
摘要:
A composite electromagnetic wave absorber capable of restricting the height of a pyramidal electromagnetic wave absorber and being applied to a compact anechoic chamber, wherein an upper absorber (3) is fabricated by dispersing ferrite powder in a general-purpose resin having a permittivity of not higher than 4.9.
摘要:
Provided is a piston ring capable of maintaining an excellent effect of preventing aluminum cohesion in a high output engine over a long period of time. At least one of the upper, lower, and side faces of the piston ring is coated with a silica-based coating in which hard nanoparticles are dispersed. The coating has a Martens hardness of 1,000 to 8,000 N/mm2. As the hard nanoparticles, carbon nanoparticles, nanodiamond particles, carbon nanotubes, or carbon nanofibers are used. To the coating, resin particles of a fluorine-based resin or a polyether-based resin may be added.
摘要翻译:提供一种活塞环,其能够长时间保持在高输出发动机中防止铝内聚力的优异效果。 活塞环的上,下和侧面中的至少一个涂覆有二氧化硅基涂层,其中分散有硬质纳米颗粒。 该涂层的马氏硬度为1,000至8,000N / mm 2。 作为硬质纳米颗粒,使用碳纳米颗粒,纳米金刚石颗粒,碳纳米管或碳纳米纤维。 可以添加氟树脂或聚醚类树脂的树脂粒子。