摘要:
A high strength cold rolled strip having excellent deep drawability and resistance to deterioration by natural aging and to planar cracking and useful for motor vehicles, is produced by hot rolling a steel slab comprising0.008-0.020% by weight of C,0.01-0.45% by weight of Mn,0.05-0.10% by weight of P,0.005-0.050% by weight of acid-soluble Al,and the balance consisting of Fe and unavoidable impurities in which N is limited to a content of 40 ppm or less, at a temperature of 1200.degree. C. or less but not lower than the Ar.sub.3 point of the steel slab; by cold rolling the resultant steel strip at a rolling reduction of 65% or more; by continuously annealing the cold rolled steel strip at a temperature of from 700.degree. to 900.degree. C. for 20 seconds to 3 minutes; by cooling the steel strip at a cooling rate of 5.degree. C./sec or more; by overaging the annealed steel strip at a temperature of from 320.degree. to 450.degree. C. for 1 to 10 minutes; by cooling said overaged steel strip to the ambient temperature, and, finally; by temper-rolling the cooled steel strip at the ambient temperature.
摘要:
A hot-rolled steel sheet of high cold formability characterized in that it contains of 0.03-0.30 % C and 0.15-2.0 % Mn as the main ingredients and also by the average length of sulfide inclusions of stringer form and/or silicate inclusions of like form being less than 100 .mu..
摘要:
A method of producing a dual phase structure cold rolled steel sheet having tensile strength 35 to 50 kg/mm.sup.2, yield ratio less than 60% and high elongation which comprises hot rolling and cold rolling by conventional process a steel containing 0.01 to 0.05% C, less than 0.2% Si, 1.7 to 2.5% Mn, 0.01 to 0.10 Al with the balance being Fe and unavoidable impurities, holding the produced steel sheet for 20 seconds to 20 minutes at a temperature 720.degree. to 850.degree. C., and cooling the steel sheet at a cooling speed between 3.degree. and 50.degree. C. per second and also above a value (.degree.C. per second) shown by following formulae:12.times.[Mn(%)].sup.2 -62.times.[Mn(%)]+81.
摘要:
Disclosed are processes for producing cold rolled steel sheets and strips having excellent press formability and ageing property by a continuous annealing method, in which specific heating cycles are adopted in combination with steel compositions with lowered phosphorus contents.
摘要:
Disclosed are processes for producing cold rolled steel sheets and strips having excellent press formability and ageing property by a continuous annealing method, in which specific heating cycles are adopted in combination with steel compositions with lowered phosphorus contents.
摘要:
An r value of a hot-rolled steel sheet is enhanced by: a specific composition consisting of not more than 0.015 wt % of C, from 1.0 to 2.5 wt % of Mn, from 0.005 to 0.10 wt % of Al, from 0.01 to 0.06 wt % of Nb, from 0.01 to 0.1 wt % of Ti; and, controlled rolling, characterized by in the rough rolling, imparting, in a temperature range of from 980.degree. to 1100.degree. C., a heavy reduction of not less than 20% per pass to the steel sheet; completing a finishing rolling at from Ar.sub.3 to 930.degree. C. and maintaining a total reduction at a temperature of not more than Ar.sub.3 +150.degree. C. to not less than 90%; and, coiling at a temperature of from 600.degree. to 800.degree. C.
摘要:
An amplifier circuit capable of reducing load of a circuit at the previous stage by providing increased input impedance producing less noises. The amplifier circuit includes a fully-differential operational amplifier composed of an inverting input terminal, a non-inverting input terminal receiving a signal different from a signal to be input to the inverting input terminal, an inverting output terminal with the same polarity of the inverting input terminal, and a non-inverting output terminal with reverse polarity; an input impedance element with one end connected to the inverting input terminal; an input impedance element with one end connected to the non-inverting input terminal; and positive feedback impedance elements, with one end of connected to the other end of the input impedance element and the other end connected to the inverting output terminal or to the non-inverting output terminal.
摘要:
The present invention relates to preventives or remedies for Alzheimer's disease, or to amyloid protein fibril-formation inhibitors, which include as an active ingredient a compound of general formula (I) below or a pharmacologically permitted salt thereof; and also to nitrogen-containing heteroaryl derivatives having specific substituents, or pharmacologically permitted salts thereof, which are valuable as preventives or remedies for Alzheimer's disease, or as amyloid protein fibril-formation inhibitors: (where, R1 and R2 are H or alkyl; Z1 and Z2 are H, alkyl, alkoxy, haloalkyl or halogeno; Z3 is alkoxy, SH, alkylthio, NH2, mono- or di-alkylamino, OH or halogeno; Z4 and Z5 are H or halogeno; and A is 4,6-pyrimidine-1,3-diyl, 1,3,5-triazine-2,6-diyl, etc).
摘要:
Pharmaceutical compositions and methods of treatment are provided for treating amyloidosis, containing, as an active ingredient, at least one nitrogen-containing heteroaryl compound represented by the following general formula or a pharmacologically permitted salt thereof; together with nitrogen-containing heteroaryl derivatives, and pharmacologically permitted salts thereof: where, R1, R2, Z1-Z5, and A are as defined herein.
摘要:
A compound of the formula (I): wherein R1 is a C1-C6 alkyl, an amino, a (C1-C6 alkyl)amino, a di(C1-C6 alkyl)amino or a nitrogen-containing saturated heterocyclic; R2 and R3 are the same or different and are a hydrogen or a C1-C6 alkyl; Arom is an unsubstituted or substituted aryl or an unsubstituted or substituted heteroaryl; wherein the substituted aryl is substituted at 1 to 5 positions and the substituted heteroaryl is substituted at 1 to 3 positions; wherein the heteroaryl is furyl, thiolyl, pyrrolyl, azepinyl, pyrazolyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, 1,2,3 oxadiazolyl, pyranyl, pyridyl, pyridazinyl, pyrimidinyl, pyrazinyl or quinolyl; and wherein the substituents of the substituted aryl and of the substituted heteroaryl are independently halogen, C1-C6 alkyl, halogeno C1-C6 alkyl, C1-C6 alkoxy, C1-C6 alkylthio, C1-C3 alkylenedioxy, C1-C7 alkanoyl, C2-C7 alkyloxycarbonyl, amino, C1-C7 alkanoylamino, hydroxyl, mercapto, cyano, nitro or carboxyl; A is an ethylene or propylene; Ra is a hydrogen, a C1-C6 alkyl or a C2-C6 alkenyl; E is a single bond, an oxygen, a sulfur or —NR4—, wherein R4 is a hydrogen or a C1-C7 alkanoyl; X1 and X2 are the same or different and are an oxygen or a sulfur, or a pharmacologically acceptable salt or ester thereof.