摘要:
A linear driving device that reduces a cogging force with a simple structure as opposed to a drive mechanism having an existing structure, deals with a plurality of cogging waveforms having different periods, and suppresses not only the cogging force but also pitching that is vertical oscillation. The device has a structure provided with a plurality of magnet arrays in which permanent magnets having different polarities are alternately and rectilinearly arranged in the same direction, and a plurality of coil modules having a plurality of teeth and slots fitted with armature coils. The arrangement distance between the coil modules disposed along the displacing direction of each of the magnet arrays equals the sum or remainder of the length corresponding to a half of any one of periods possessed by the cogging force generated when the coil modules move by one magnetic pole and an integer multiple of the length of a magnetic pole pair. The coil modules are connected to each other by a connecting member, and the connecting member makes relative motion along the magnet arrays.
摘要:
In a MOS transistor circuit (comprising a pair of current mirror circuits, each comprising: first and second MOS transistors having their gate electrodes connected together; third and fourth MOS transistors respectively connected in series with the first and second transistors the third and the fourth MOS transistors of the pair of current mirror circuits receiving a pair of complementary signals at their gate electrodes; and the nodes between the second and the fourth MOS transistors forming output nodes of the current mirror circuits), a pair of capacitors each coupling the output of one current mirror circuit to the gate electrodes of the first and the second MOS transistors of the other current mirror circuit. This provides positive feedback. The change in the outputs responsive to change in the inputs is thereby accelerated.
摘要:
A sizing agent for carbon fibers comprises a water-based dispersion of a mixture of constituents A, B, C and D to be described below at weight ratios of (constituent A)/(constituents B+C)=60/40 to 90/10, (constituent B/constituent C)=2/1 to 7/1, and (constituents A+B+C)/(constituent D)=85/15 to 97/3 where the constituent A is phenyl epoxy resin or aromatic nitrogen-containing epoxy resin, the constituent B is shown by the following expression (I): ##STR1## where X is a benzene residue or a diphenyl residue, n is an integer in the range of 1 to 5, Y is ##STR2## where q is an integer in the range of 4 to 50, p is 0 or an integer in the range of 1 to 5, l and m are such that 1/2.ltoreq.m/l.ltoreq.1/4, the constituent C is polyolyethylene alkylphenylether shown by the following expression (II): ##STR3## where R is an alkyl group with 8 to 9 carbon atoms and a is an integer in the range of 4 to 8, and the constituent D is aliphatic monovalent alcohol ester of oleic acid and/or monovalent aliphatic acid ester of oleyl alcohol.
摘要翻译:用于碳纤维的上浆剂包含以下所述的组分A,B,C和D的混合物的水基分散体(组分A)/(组分B + C)= 60/40至90 / 10(成分B /成分C)= 2/1〜7/1,(成分A + B + C)/(成分D)= 85/15〜97/3其中,成分A为苯基环氧树脂或芳香族 含氮环氧树脂,其组分B由下式(I)表示:其中X为苯残基或二苯基,n为1至5的整数,Y为 其中q是4至50范围内的整数,p是0或1至5的整数,l和m使得1/2 m / l <1 / 如图4所示,组分C是由下列表达式(II)表示的聚亚乙基烷基苯基醚:其中R是具有8至9个碳原子的烷基,a是4至8的整数, 组分D是油酸和/或一价芳族脂族的脂族一价醇酯 油醇酸酯。
摘要:
An AC drive circuit for exciting the transducer of an ultrasonic level gauge. The circuit includes a gate-controlled astable multivibrator that generates pulses of constant amplitude and constant frequency. These pulses are applied to a counter arrangement adapted to equalize the total amount of positive and negative half waves in the AC drive power derived from the output of the astable multivibrator.
摘要:
An ultrasonic transducer suitable for use in a corrosive environment and constituted by a disc-type electrostriction element affixed to a rigid body of greater thickness and suspended within a case by a diaphragm secured to the body at a vibration node, the case being filled with an electrically non-conductive elastomeric material.
摘要:
Disclosed is a thermostable DNA polymerase preparation which can illimitably reduce the risk of false positivity in the detection of a subject microorganism utilizing a gene amplification reaction and therefore enables the selective amplification of DNA for detecting the subject microorganism even when the amount of the subject microorganism is small and therefore the amount of DNA collected therefrom is extremely small, and can be produced at a reduced cost. Also disclosed is a method for quantifying or quantifying/identifying a subject organism to be detected rapidly, conveniently and with high sensitivity using the preparation of the present invention.
摘要:
A nonaqueous electrolyte secondary battery including a negative electrode having a negative electrode mixture layer on at least one surface of a negative collector; a positive electrode; a separator disposed between the positive electrode and the negative electrode; and a nonaqueous electrolyte, wherein the negative electrode mixture layer contains a negative electrode active material, poly(ethylene oxide), carboxymethylcellulose, and styrene-butadiene rubber, the mass of the carboxymethylcellulose is greater than the mass of the poly(ethylene oxide), and the percentage of the total amount of the carboxymethylcellulose and the lithium ion conducting polymer with respect to the total amount of the negative electrode mixture layer is 0.2% by mass or more and 2.2% by mass or less.
摘要:
Charge-discharge cycle performance is improved in a lithium secondary battery including a negative electrode containing a negative electrode active material having silicon as its main component, provided on a surface of a current collector, a positive electrode containing a positive electrode active material, and a non-aqueous electrolyte. The positive electrode active material is a lithium transition metal oxide containing Li and Co and having a layered structure, and further containing a group IVA element of the periodic table, such as Zr, Ti, or Tf, and a group IIA element of the periodic table, such as Mg.
摘要:
A method of assembling an air bearing, the air bearing having a guide on a fixed side, and a slider having a pair of opposing members arranged on opposite sides of the guide, the slider being float-supported so as to be able to move relative to the guide, the method having: contacting a first opposing member of the pair of opposing members to the guide; supplying compressed air of a predetermined pressure between the first opposing member and the guide contacting each other, so as to form a temporary gap twice as large as a target bearing gap between the first opposing member and the guide; maintaining contact between the guide and a second opposing member of the pair of opposing members; and supplying compressed air of a predetermined pressure between the first opposing member and the guide as well as the second opposing member and the guide, so as to form respective target bearing gaps between first and second opposing members and the guide, in place of the temporary gap.
摘要:
To obtain a nonaqueous electrolyte secondary battery which has excellent storage characteristics at elevated temperatures, and can inhibit an increase in battery resistance and a reduction in charge-discharge efficiency after storage, and can enhance safety. A nonaqueous electrolyte secondary battery having a negative electrode including a negative active material, a positive electrode including a positive active material, a nonaqueous electrolyte and a separator placed between the negative electrode and the positive electrode, wherein an inorganic particle layer including an inorganic particle which does not occlude and release lithium, a conductive material and a binder is placed on the surface of the negative electrode, and an electrically conducting path contacting with the surface of the negative electrode is formed in the inorganic particle layer by the conductive material.