摘要:
A process for the production of trialkoxyhalosilanes which comprises reacting a tetrahalosilane [37] with a tetra-alkoxysilane [38] in the presence of an alcohol whose alkoxy group is the same as those of the tetraalkoxysilane to thereby obtain a trialkoxyhalosilane [39], characterized in that the alcohol is used in an amount of 5 to 50% by mole based on the total amount of Si of the tetrahalosilane and the tetraalkoxysilane: SiX4[37] (wherein X is halogeno) Si(OR1)4[38] (wherein R1 is a hydrocarbon group having 1 to 6 carbon atoms) XSi(OR1)3[39] (wherein X and R1 are each as defined above).
摘要:
A zoom lens includes: a first lens group having a positive refractive power and statically positioned along an optical axis when a power of the zoom lens is varied or the zoom lens is focused; a second lens group having a negative refractive power; a third lens group having a positive refractive power; a fourth lens group having a positive refractive power; a fifth lens group. The second and fourth lens groups are moved for varying the power of the zoom lens and the fourth lens group is further moved for focusing the zoom lens. The first lens group includes a reflective optical element for bending an optical path. The second lens group includes a cemented lens including a positive lens and a negative lens. The fourth lens group includes two positive lenses, and the fifth lens group includes one positive lens having at least one aspherical surface.
摘要:
The invention has an object to provide a catalyst for polymerizing or copolymerizing an α-olefin, catalyst constituent thereof, and method of polymerizing α-olefins with the catalyst, for production of α-olefin polymers or copolymers with high hydrogen response, high polymarization reaction rate, high stereoregularity and excellent melt fluidity. The invention discloses a catalyst constituent of the catalyst for polymerizing or copolymerizing an α-olefin, represented by Formula 37 or 38: Si(OR1)3(NR2R3)Formula 37 (where in Formula 37, R1 is a hydrocarbon group with 1 to 6 carbon atoms; R2 is a hydrocarbon group with 1 to 12 carbon atoms or hydrogen; and R3 is a hydrocarbon group with 1 to 12 carbon atoms) RNSi(OR1)3Formula 38 (where in Formula 38, R1 is a hydrocarbon group with 1 to 6 carbon atoms; and RN is a cyclicl amino group).
摘要:
The present invention provides a technology including, for example, a packet relay processing section to carry out packet relay, a packet sampling section to carry out packet sampling, a flow statistics counting section to take statistics of each flow, and a flow statistics generating section to generate a NetFlow export datagram, wherein the flow statistics counting section collectively counts the number of the packets or bytes received per unit time when the number does not exceed a threshold value and individually counts the number for each flow when the number exceeds the threshold value, and thereby a flow of abnormal traffic which is suspected to be DoS attack is efficiently detected with small amounts of resources (mainly memories).
摘要:
A semiconductor device, wherein a first metallic member is bonded to a first electrode of a semiconductor element via a first metallic body containing a first precious metal, and a second metallic member is bonded to a second electrode via a second metallic body containing a second precious metal.
摘要:
An image forming apparatus includes an image bearing member; a plurality of developing devices for developing electrostatic images formed on the image bearing member with developers, the developing devices including respective developer carrying members for carrying respective developers; moving means for moving a selected one of the developing devices to an operative position, wherein each of the developer carrying members is movable selectively to be in contact with or spaced from the image bearing member at the operative position; wherein the apparatus is operable in a first image formation mode in which an image is formed using the plurality of developing devices and a second image formation mode in which an image is formed using one of the plurality of developing devices, and wherein the developer carrying member which is at the operative position in the first image formation mode is capable of being spaced from the image bearing member by a first distance during non-developing-operation, and the developer carrying member which is at the operative position in the second image formation mode is capable of being spaced from the image bearing member by a second distance during non-developing-operation, and wherein the second distance is smaller than the first distance.
摘要:
A bearing unit, including: a shaft; a first radial bearing configured to support the shaft in a circumferential direction; a second radial bearing disposed in a spaced relationship from the first radial bearing in an axial direction of the shaft configured to support the shaft in the circumferential direction; a thrust bearing configured to support one end of the shaft in a thrust direction; a spacer disposed between the first and second radial bearings; a housing in which the first and second radial bearings and the thrust bearing are disposed and which has an enclosed structure except a shaft insertion hole in which the shaft is fitted; and viscous fluid filled in the housing.
摘要:
A data access apparatus has a memory portion including plural memory banks. A data storage control portion stores the pixel data in the plural memory banks with the pixel data being divided into the plural memory banks based on information on an access pattern of plural pixels set on a predetermined screen. A data access control portion reads pixel data relative to the plural pixels specified by the access pattern at the same time from the plural memory banks at each set position in which the set position of the access pattern moves from the start position thereof toward a pixel row direction. A selector portion transmits pixel data corresponding to respective pixels constituting each of the groups of pixels based on correspondence information on input and output. Each group of pixels includes a center pixel and peripheral pixels positioned at a periphery of the center pixel.
摘要:
An object of this invention is to provide a method for assaying, predicting or assessing drug metabolism by effectively detecting (a) mutation(s) in a gene coding for UGT. A gene coding for UGT comprises 5 exons, and since the regions of exons 2 through 5 are common to each isoform of UGT1, by assaying a mutation in the common regions, particularly a mutation in exon 5 region, and further adding the detection of (a) mutation(s) in a plurality of exon regions, mutations of UGT1 gene can effectively assayed. A nucleic acid chip using nucleic acid probes is used as a way of detecting (a) mutation(s).
摘要:
In a nonvolatile semiconductor memory device in which a plurality of threshold values are set to store multi-level data in a memory cell, bits of multi-bit data are separately written into a memory cell according to an address signal or a control signal to effect the reading and erasing. Concretely, the memory array is so constituted that it can be accessed by three-dimensional address of X, Y and Z, and multi-bit data in the memory cell is discriminated by the Z-address.