摘要:
A dielectric filter is made of a dielectric material and includes a molded member of a pillar shape which has a hole formed from the top surface thereof toward the inside, an inner electrode formed so as to cover the inner circumferential surface of the hole; an outer electrode provided so as to cover the outer surface of the molded member except a prescribed region, and a coupling electrode provided at least in a portion of the prescribed region. An electrode area of a region of the inner electrode which faces against the coupling electrode is adjusted, thereby adjusting the coupling capacitance which is formed between the inner electrode and the coupling electrode.
摘要:
On an upper surface of a substrate (20) a band-pass filter (29) is provided, and on the opposite (lower) surface of a substrate (20) a low-pass filter comprising a conductive layer pattern (27) and capacitors (22,23) is provided, wherein a conductive layers (27) are provided on substantially the entire area of the upper surface excluding portions for terminals and on the lower surface excluding portions for the low-pass filter and the terminals, and by connecting both conductive layers by means of a row of through-hole connections, the input terminal (24) and the output terminal (25) are shielded from each other.
摘要:
A soldering method in which, out of soldering steps of (a) during soldering, (b) before soldering, and (c) after soldering, in at least the steps of (a) during soldering and (b) before soldering, an alternating current whose frequency temporally changes in a band of 20 Hz-1 MHz is applied to at least any of (d) a solder material, (e) a soldering object, and (f) a peripheral portion thereof, and a modulated electromagnetic wave treatment is carried out by use of an electromagnetic field induced by the alternating current. Thereby, when not only a lead-containing solder material but also a lead-free solder material are used, wettability in soldering to a soldering object is made better, and an obtained soldered article is improved in strength, etc., compared to the conventional solder material.
摘要:
An agent for sequestering heavy-metal ions comprising a water-insoluble amorphous alkali metal aluminosilicophosphate having the formula (I):[x(M.sub.2 O).Al.sub.2 O.sub.3.y (SiO.sub.2).z(P.sub.2 O.sub.5).w(H.sub.2 O)] (I)wherein M is alkali metal selected from the group consisting of Na, K and Li, x, y, z and w are integers representing the mole numbers of the respective components, wherein x, y and z satisfy the following relations:0.20.ltoreq.x.ltoreq.1.10,0.20.ltoreq.y.ltoreq.4.00, and0.001.ltoreq.z.ltoreq.0.80,and w is or zero an optional positive number.
摘要翻译:包含具有式(I)的水不溶性无定形碱金属铝硅磷酸盐螯合重金属离子的试剂:[x(M 2 O)·Al 2 O 3·y(SiO 2)·z(P 2 O 5)·w(H 2 O)](I) 其中M是选自Na,K和Li的碱金属,x,y,z和w是表示各组分的摩尔数的整数,其中x,y和z满足以下关系:0.20 < x = 1.10,0.20 = y = 4.00和0.001 = z <= 0.80,w是任选的正数为零。
摘要:
A detergent composition comprising as all or a part of the active detergent component (A) a mixture of up to 70% by weight of unbranched-alkyl ether sulfate, or mixtures thereof, having the formula (I):r.sub.1 --o--(ch.sub.2 ch.sub.2 o).sub.n SO.sub.3 M (I)wherein R.sub.1 is unbranched alkyl (CH.sub.3 (CH.sub.2).sub.p --) having a total number of from 6 to 15 carbon atoms and having a carbon atom number distribution such that the average carbon atom number is within the range of from 8 to 13, n is from 0.5 to 1.5 as an average number in the mixture, and M is alkali metal, alkaline earth metal, ammonium or alkanol amine,And at least 30% by weight of a branched alkyl ether sulfate, or mixtures thereof, having the formula (II): ##STR1## wherein R.sub.2 is an unbranched alkyl having 1 to 12 carbon atoms, R.sub.3 is an unbranched alkyl having 1 to 4 carbon atoms, the group ##STR2## having a carbon number distribution such that the average carbon atom number thereof is within the range of from 8 to 13, and n and M are as defined above for formula (I),and (B) an unbranched alkyl ether sulfate, or mixtures thereof, having the formula (III):r.sub.4 --o--(ch.sub.2 ch.sub.2 o).sub.m SO.sub.3 M (III)wherein R.sub.4 is unbranched saturated alkyl in which the alkyl group having 18 carbon atoms occupies at least 80 percent by weight of the whole component (B), m is 1 to 50 on the average and M is as defined above for formulae (I) and (II),the ratio of (A) to (B) being in the range between 95 : 5 and 5 : 95.
摘要:
A pallet (2) for packing a glass plate includes: a base part (3) which is disposed at a bottommost portion, for supporting from below a plurality of glass plates (G) piled one upon another in an upright posture, and has a fork insertion portion (6) for insertion of forks of a forklift; a backside part (4) rising from a rear side of the base part (3), for supporting the glass plates (G) from a rear thereof; and a pedestal part (5) mounted in engagement with at least one of the base part (3) and the backside part (4) so as to receive bottom side portions of the glass plates (G), in which a lowermost portion of the pedestal part (5) is set lower than a substantial top surface of the base part (3).
摘要:
A dielectric antenna duplexer used in a high frequency radio device such as a portable telephone, and a dielectric filter for forming the duplexer of the SIR (stepped impedance resonator) composed by cascade connection of first transmission lines having one end grounded and second transmission lines having one end open and lower in characteristic impedance than in the first transmission lines, first transmission lines and second transmission lines are individually coupled in electromagnetic field, thereby forming an antenna duplexer and a dielectric filter of small insertion loss, high bandwidth selectivity, excellent band pass characteristic, and low cost.
摘要:
A granular or powdery detergent composition comprising (I) as an active detergent component a surface active agent having a tendency to cake, and (II) as an anti-caking agent, from 0.2 to 20% by weight, based on the total weight of the detergent composition, of a carboxylic acid or an alkali metal salt thereof obtained by reacting (A) a polyalkylene glycol and (B) an acid anhydride, at an (A)/(B) mole ratio of from 1/2 to 1/1, said polyalkylene glycol being selected from (i) polyethylene glycols having an average molecular weight of 2000 to 10000 and (ii) nonionic surface active agents having the formula: ##STR1## wherein a, b and c are numbers satisfying the relations:140 .ltoreq. A + C .ltoreq. 200 AND 30 .ltoreq. B .ltoreq. 40,and the acid anhydride is selected from the group consisting of maleic anhydride, phthalic anhydride and succinic anhydride, and wherein the weight ratio of (II)/(I) is from 1/10 to 3/2.
摘要:
A powdery bleaching detergent composition consisting of detergent component(s) and sodium percarbonate, characterized in that at least 60% by weight of said detergent component(s) has particle diameters larger than 250 .mu., the copper content being less than 2 ppm and the iron content being less than 5 ppm, and at least 60% by weight of said sodium percarbonate having particle diameters larger than 250 .mu..
摘要:
An LED lighting apparatus can be configured to supply a number of LEDs connected in series with a requisite voltage and power even if an amount of forward voltage of the LEDs connected in series is larger than a supply voltage of a battery. The LED lighting apparatus can include a boosting circuit and an inverted boosting circuit. LEDs can be connected between outputs of the boosting circuit and the inverted boosting circuit. The LED lighting apparatus can also include a current detection circuit configured to detect an LED current, and can include a dual PWM control IC configured to control the boosting circuit and the inverted boosting circuit in accordance with the LED current detected by the current detection circuit so as to keep the LED current substantially constant. The LED lighting apparatus can include a shutdown circuit to stop supplying a power supply when a load that includes the LEDs is in a circuit that is either opened or shorted.