摘要:
A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising a zeolite as an active ingredient and having an ethylene conversion lowered through reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof.
摘要:
The present invention includes a run-flat tire 1 comprising a plurality of turbulence generation ridges 20 which extend on a surface of a tire side portion 3 in a tire-radial direction and which are arranged at a pitch in a tire-circumferential direction and relationship Si>So is satisfied. Si is the sum of sidewall areas of all the turbulence generation ridges located at the inner side, in the tire-radial direction, of a maximum width position of the pneumatic tire. So is the sum of sidewall areas of all the turbulence generation ridges located at the outer side, in the tire-radial direction, of the tire maximum width position.
摘要:
A pneumatic tire 1 according to the present invention has turbulence generating protrusions on a tire surface, each of the turbulence generating protrusions having a sharp edge part. In the pneumatic tire, the following relationships are satisfied: 0.015≦H/√R≦0.64; 1.0≦p/H≦50.0; 0.1≦H/e≦3.0; 1.0≦L/H≦50.0; and 1.0≦(p−w)/w≦100.0, where “R” is a tire radius, “H” is a protrusion maximum height, “p” is a protrusion circumferential-direction interval, “e” is a protrusion radial-direction interval, “L” is a protrusion radial-direction length, and “w” is a protrusion circumferential-direction length.
摘要翻译:根据本发明的充气轮胎1在轮胎表面上具有湍流产生突起,每个湍流产生突起具有尖锐的边缘部分。 在充气轮胎中,满足以下关系:0.015≦̸ H /√R≦̸ 0.64; 1.0≦̸ p / H≦̸ 50.0; 0.1≦̸ H / e≦̸ 3.0; 1.0≦̸ L / H≦̸ 50.0; 和1.0≦̸(p-w)/w≦̸100.0,其中“R”是轮胎半径,“H”是突出最大高度,“p”是突出周向间隔,“e”是突起径向 方向间隔,“L”是突出径向长度,“w”是突出圆周方向长度。
摘要:
Apparatus for Terahertz wave generation. An amplified laser generates a pulsed optical fundamental beam and a crystal passes the fundamental beam to generate a second harmonic beam of the fundamental beam. A lens focuses the mixed fundamental and second harmonic beams and a gas cell containing water vapor receives the focused beams and generates Terahertz waves.
摘要:
An internal combustion engine connecting rod is designed with bolts having a minimum required strength. A strength safety factor Sfa is calculated based on an axial strength limit load FX of the bolt and the maximum load FB to be born by the bolt due to a piston inertia force (Sfa=FX/FB) acting on the connecting rod. A mating surface separation safety factor Sfb is calculated based on the tensile load (FB−FC) resulting from the piston inertia force and the load FE carried by the bolts at a mating surface separation limit, i.e., the maximum bolt load FE at which the connecting rod main body and the cap remain in contact without separating (Sfb=FE/(FB−FC)). The mating surface separation safety factor Sfb of the connecting rod is set to be equal to or larger than the strength safety factor Sfa of the bolts (Sfb≧Sfa).
摘要翻译:内燃机连杆设计为具有最小要求强度的螺栓。 强度安全系数Sfa基于螺栓的轴向强度极限载荷F×X SUB>和由于活塞惯性而由螺栓承受的最大载荷F B B计算 作用在连杆上的力(Sfa = F / X / F B B)。 配合表面分离安全系数Sfb是基于活塞惯性力和载荷F E的导致的拉伸载荷(F B)来计算的, / SUB,在配合表面分离极限下,即连杆主体和盖保持接触而不分离的最大螺栓载荷F E(Sfb = F = Sfa)。
摘要:
A plasma CVD apparatus for forming a thin film on a wafer having diameter Dw and thickness Tw, includes: a vacuum chamber; a shower plate; a top plate; a top mask portion for covering a top surface peripheral portion of the wafer; and a side mask portion for covering a side surface portion of the wafer. The side mask portion has an inner diameter of Dw+α, and the top mask portion is disposed at a clearance of Tw+β between a bottom surface of the top mask portion and a wafer-supporting surface of the top plate, wherein α is more than zero, and β is more than zero.
摘要:
The invention provides a method of manufacturing polyolefin-polyamide resin composition, which method has a large amount of discharge and is capable of long-time running and excellent in productivity. The method of manufacturing polyolefin-polyamide resin compositions comprises melting and kneading, extruding, and drafted drawing or rolling (a) a polyolefin, (b) a polyamide, (c) a silane coupling agent, (d) a first antioxidant with a melting point of 70-170° C., and (e) a second antioxidant with a melting point of 180-300° C. to disperse the polyamide (b) in the form of fiber with an average fiber diameter of 1 μm or less in the polyolefin (a) to finish the composition in the form of pellets.
摘要:
A method for dry-etching a Si substrate or a Si layer in a processing chamber includes the step of supplying an etching gas into the processing chamber, wherein the etching gas is a mixture gas including Cl2, O2 and NF3 and a residence time τ of the etching gas is equal to or greater than about 180 msec, the residence time τ being defined as: τ=pV/Q where p represents an inner pressure of the processing chamber; V, an effective volume of etching space formed on the Si substrate or the Si layer; and Q, a flow rate of the etching gas.
摘要:
The invention provides an optimization device for a unitary apparatus that can obtain optimum characteristics as a combined apparatus, without losing user's selectivity and unitary apparatus's versatility. The optimization device includes an optimization process section that optimizes dynamic characteristics of the unitary apparatus using genetic algorithms and fuzzy inference, with functional characteristics of a combined apparatus as evaluation reference.
摘要:
A chain drive system includes a drive sprocket, a driven sprocket and a chain looped over the drive sprocket and the driven sprocket. The chain and the sprocket having respective sliding surfaces slidable relative to each other in the presence of lubricating oil, and any adjacent chain components of the chain having respective sliding surfaces slidable relative to each other in the presence of lubricating oil. At least one of the sliding surfaces between the chain and the sprocket and at least one of the sliding surfaces between any adjacent chain components have hard carbon coatings formed on base portions thereof. Each of the hard carbon coatings has a hydrogen content of 10 atomic % or less.