摘要:
A transition metal complex represented by the formula [1] ##STR1## wherein M is a transition metal atom of the group 4 of the periodic table of elements; Cp is a group having a cyclopentadiene type anionic skeleton; A and G are each a divalent residue containing an atom of the group 15 or 16 of the periodic table of elements and may be the same with or different from each other; X.sup.1, X.sup.2, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently a hydrogen atom, halogen atom, alkyl group with the number of carbon atoms of 1-20 optionally substituted with at least one halogen atom, aralkyl group with the number of carbon atoms of 7-20 optionally substituted with at least one halogen atom, aryl group with the number of carbon atoms of 6-20 optionally substituted with at least one halogen atom, substituted silyl group with the number of carbon atoms of 1-20 optionally substituted with at least one halogen atom, alkoxy group with the number of carbon atoms of 1-20 optionally substituted with at least one halogen atom, aralkyloxy group with the number of carbon atoms of 7-20 optionally substituted with at least one halogen atom, aryloxy group with the number of carbon atoms of 6-20 optionally substituted with at least one halogen atom or a di-substituted amino group with the number of carbon atoms of 2-20, provided that R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may optionally combine with each other to form a ring; L is a Lewis base and w is an integer of 0-2, an olefin polymerization catalyst and a process for producing olefin polymers which uses the catalyst.
摘要:
The present invention relates to a transition metal complex, a process for producing the same, a polymerization catalsyt containing the transition metal complex and a process for producing polymers which uses the catalysts.
摘要:
An information processing apparatus that acquires first posture information corresponding to the information processing apparatus and a first distance coordinate corresponding to the information processing apparatus, and second posture information corresponding to another information processing apparatus and a second distance coordinate corresponding to the another information processing apparatus. The information processing apparatus then calculates an object's position in a virtual space based on the first and second posture information and the first and second distance coordinates.
摘要:
Session management means holds session information concerning sessions for fixed terminals and sessions for mobile terminals including type information indicating a terminal type and status information indicating the status of communication. Session clear-out means disconnects a session the type information for which indicates a mobile terminal and in which communication has not been performed for a time period longer than or equal to a first monitoring time period, on the basis of the session information held in the session management means.
摘要:
At the time of a normal operation, a second channel change message 30b is transmitted from the AP to each terminal before a time T0 until a channel change that is included in a first channel change message 30a elapses, thereby all terminals that received this message 30b, and the AP stop changing the channel. At the time of interference occurrence, setting a time until a channel change to be filed in a third channel change message 30d to a time equal to or less than a lapse time until the channel change at the time point of transmitting this message 30d to transmit it to each terminal from the AP allows the terminal that failed to receive the message at the time of the interference occurrence to make a channel change without causing a connection to the AP to be disconnected.
摘要:
An optical information recording and/or reproducing apparatus includes a first semiconductor laser for generating a light beam for recording or erasing information on an optical information recording medium. Also provided is a second semiconductor laser for generating a light beam for reproducing recording information from the optical information recording medium, and a first direct current supplying circuit for supplying a first direct current to the first semiconductor laser. A second direct current supplying circuit supplies a second direct current to the second semiconductor laser, and a high-frequency current supplying circuit supplies high-frequency currents to the first semiconductor laser and the second semiconductor laser. The high-frequency current supplying circuit supplies a smaller high-frequency current to the first semiconductor laser than to the second semiconductor laser.
摘要:
The present invention provides a novel transition metal complex which catalyzes asymmetric hydrogenation reaction. The present invention also provides a process for the preparation of the foregoing novel complex. The present invention further provides an asymmetric hydrogenation catalyst comprising the foregoing novel complex. The novel transition metal complex is provided, represented by the following general formula (I): ##STR1##
摘要:
A process for producing a carboxylic acid or an ester thereof represented by formula (I): ##STR1## wherein: R represents a hydrogen atom or a lower alkyl group; R.sup.1 represents a lower alkyl group; CH.sub.2 COOR.sup.3, wherein R.sup.3 represents a hydrogen atom or a lower alkyl group; or NHR.sup.4, wherein R.sup.4 represents a formyl group, an acetyl group, a benzoyl group, or a chloroacetyl group, andR.sup.2 represents a hydrogen atom, a lower alkyl group, or a phenyl group,which comprises hydrogenating an unsaturated compound represented by formula (II): ##STR2## wherein R, R.sup.1, and R.sup.2 are as defined above, in the presence of a rhodium or ruthenium complex catalyst having, as a ligand, BICHEP which means 2,2'-bis(dicyclohexylphoshino)-6,6'-dimethyl-1,1'-biphenyl represented by formula (III): ##STR3## is disclosed.
摘要:
There is provided an information processing device includes a virtual space recognition unit for analyzing 3D space structure of a real space to recognize a virtual space, a storage unit for storing an object to be arranged in the virtual space, a display unit for making a display unit display the object arranged in the virtual space, a direction of gravitational force detection unit for detecting a direction of gravitational force of a real space, and a direction of gravitational force reflection unit for reflecting the direction of gravitational force detected by the detection unit in the virtual space.
摘要:
Provided is an information processing apparatus including an image acquisition unit for acquiring a real space image including an image of another apparatus, a coordinate system generation unit for generating a spatial coordinate system of the real space image acquired by the image acquisition unit, and a transmission unit for transmitting spatial information constituting the spatial coordinate system generated by the coordinate system generation unit to the other apparatus sharing the spatial coordinate system.