摘要:
[Problem] To efficiently obtain an α-olefin polymer having a high melting point and a high molecular weight. [Solution to Problem] The process for preparing an olefin polymer of the present invention is a process for preparing an olefin polymer, comprising polymerizing at least one monomer selected from α-olefins of 2 or more carbon atoms, wherein the polymerization is carried out at a temperature of not lower than 40° C. in the presence of a catalyst comprising a transition metal compound component (A) which comprises two or more kinds of transition metal compounds (a) represented by the following formula [A1] and an organometallic compound component (B) which comprises an organometallic compound (b), propylene is contained in the monomer, and the olefin polymer is an olefin polymer whose weight-average molecular weight (Mw) and number-average molecular weight (Mn), as determined by gel permeation chromatography (GPC), satisfy the relationship of 1≦(Mw/Mn)≦3, and which has a melting point (Tm), as determined by DSC, of not lower than 150° C. and an intrinsic viscosity ([η]) of not less than 1.5 dl/g.
摘要:
Provided are a thin client-server system, a thin client terminal, a data management method, and a computer readable recording medium capable of preventing data leakage when the thin client terminal is lost.A thin client-server system comprising a server provided with a database storing user data, and a thin client terminal acquiring the user data from the server, connected through a network, wherein the thin client terminal is provided with communication processing means to transmit and receive data; storage means to execute a user data acquisition request to the server through the communication processing means, and store the user data acquired from the server in a volatile memory; and control means to judge whether or not a predetermined time has passed after the reference to the user data stored in the volatile memory has been completed, and delete the data stored in the volatile memory when the time has passed.
摘要:
The present invention provides a steel for steel sheets excellent in workability and showing significantly decreased formation of surface defects, and a method of deoxidizing molten steel for the steel for steel sheets which prevents nozzle clogging during continuous-casting the molten steel. That is, the steel for steel sheets excellent in workability, comprises, based on weight, 0.0001 to 0.0030% of C, up to 0.03% of Si, 0.05 to 0.30% of Mn, up to 0.015% of P, 0.001 to 0.015% of S, up to 0.008% of Al, 0.02 to 0.08% of Ti, 0.0005 to 0.0020% of Ca, 0.0005 to 0.01% of N, optionally containing at least one of 0.001 to 0.02 wt % of Nb and 0.0001 to 0.0010 wt % of B, and the balance of Fe and unavoidable impurities. Moreover, the deoxidation method of the steel for steel sheets comprises properly adjusting addition amounts of Ca and Al as deoxidizing agents for the steel having the chemical composition mentioned above so that the chemical composition of the nonmetallic inclusions is controlled to prevent clogging of the casting nozzle.
摘要:
An electronic wrist watch having a sound producing unit and an electrooptic data display unit, has a single flat plate member a lower surface of which is contacted with a user's hand, and a case member which is attached to one end of the plate member so as to be freely opened and closed over the plate member. A switch input section for data input is mounted on an upper surface of the plate member. An analog display unit for displaying time with hands, and a sound emitting section are mounted on the upper surface of the case member so as not to overlap each other. An electrooptic data display unit for displaying data is mounted on the lower surface of the case member. A sound producing unit and an electronic circuit for driving the analog display unit and the sound producing unit are housed in the case member. The sound producing unit is located under the sound emitting section in the case member, and the electronic circuit is electrically connected to the switch input section so as to cause the electrooptic data display unit to display data from the switch input section.
摘要:
Provided are a thin client-server system, a thin client terminal, a data management method, and a computer readable recording medium capable of preventing data leakage when the thin client terminal is lost.A thin client-server system comprising a server provided with a database storing user data, and a thin client terminal acquiring the user data from the server, connected through a network, wherein the thin client terminal is provided with communication processing means to transmit and receive data; storage means to execute a user data acquisition request to the server through the communication processing means, and store the user data acquired from the server in a volatile memory; and control means to judge whether or not a predetermined time has passed after the reference to the user data stored in the volatile memory has been completed, and delete the data stored in the volatile memory when the time has passed.
摘要:
The present invention provides a high strength, high toughness steel wire rod useful for a PC steel wire, galvanized steel strands, spring use steel wire, cables for suspension bridges, etc. By hot rolling, then directly patenting or reaustenitizing, then patenting a high carbon steel wire rod of a specific chemical composition of the steel and chemical composition, size, and numerical density of inclusions, piano wire rod or high carbon steel wire rod having a structure of mainly pearlite, having an average value of the proeutectoid cementite area ratio of 5% or less in a center region of less than 20% of the wire rod diameter from the center of the wire rod, having a micromartensite size of the C section of 100 μm or less, having a tensile strength of the 170 kgf/mm2 class or more, and having a drawing ratio at break of 30% or more is obtained.
摘要:
An electric power steering apparatus comprises a driving gear driven by an electric motor for steering assist and a driven gear meshed with the driving gear. A steering shaft is rotated along with the driven gear. The steering shaft is rotatably supported by a first bearing and a second bearing. An urging member is arranged in a recess provided in a housing. The urging member urges at least one of the first bearing and the second bearing in a direction in which a center-to-center distance between the driving gear and the driven gear increases.
摘要:
An electrophotographic photoreceptor comprising: a conductive support; and a photosensitive layer, wherein the photosensitive layer comprises a first functional layer comprising a cured product of a composition that contains a compound represented by formula (I): FL-O—R)n (I) wherein in formula (I), F represents a hole-transporting n-valent organic group; R represents a monovalent organic group; L represents an alkylene group; and n indicates an integer of from 1 to 4.
摘要:
The present invention provides a high strength, high toughness steel wire rod useful for a PC steel wire, galvanized steel strands, spring use steel wire, cables for suspension bridges, etc. By hot rolling, then directly patenting or reaustenitizing, then patenting a high carbon steel wire rod of a specific chemical composition of the steel and chemical composition, size, and numerical density of inclusions, piano wire rod or high carbon steel wire rod having a structure of mainly pearlite, having an average value of the proeutectoid cementite area ratio of 5% or less in a center region of less than 20% of the wire rod diameter from the center of the wire rod, having a micromartensite size of the C section of 100 μm or less, having a tensile strength of the 170 kgf/mm2 class or more, and having a drawing ratio at break of 30% or more is obtained.