摘要:
An imidazoline derivative or possible tautomer thereof, represented by the formula (1), wherein n represents one of integers "1" through "4", and R.sub.1 and R.sub.2 represent hydrogen atom, lower alkyl, aryl, aralkyl group, or R.sub.1 and R.sub.2 cooperate to represent alkylene, alkylidene or arylalkylidene group, while R.sub.3 represents a nitrogen-containing aromatic ring that may be substituted by lower alkyl, alkoxy or alkanoyl group, or a substituted phenyl group represented by the formula (2), wherein R.sub.4 and R.sub.5 represent hydrogen atom, lower alkyl group that may be substituted by halogen atom or hydroxyl group, cycloalkylalkyl group, lower alkenyl group, lower alkanoyl group that may be substituted by halogen atom, lower alkoxyalkyl or alkoxycarbonyl group, arylcarbonyl, arylalkyl or arylalkoxycarbonyl group, lower alkylaminocarbonyl or alkylsulfonyl group or arylsulfonyl group, or R.sub.4 and R.sub.5 cooperate with an adjacent nitrogen atom to constitute a cyclic structure, while R.sub.6 represents hydrogen atom, hydroxyl group, halogen atom, lower alkyl or alkoxy group or nitro group. ##STR1##
摘要:
An imidazole derivative represented by one of formulas (1), wherein R.sub.1, R.sub.2 represents hydrogen atom, lower alkyl, aryl, aralkyl group, or R.sub.1 and R.sub.2 cooperate to represent alkylene, alkylidene, arylalkylidene group, R.sub.3 representing hydrogen atom, lower alkyl or alkanoyl group, or aralkyl or arylcarbonyl group, wherein at least one of A and B represents a group represented by formula (2), wherein m represents an integer 1-4, R.sub.4 representing nitrogen-containing aromatic ring that may be substituted by lower alkyl, alkoxy or alkanoyl group, or phenyl group represented by formula (3), R.sub.5, R.sub.6 representing hydrogen atom, lower alkyl or alkenyl group, or lower alkanoyl or arylcarbonyl group which may be substituted by a halogen atom, R.sub.7 representing hydrogen or halogen atom, hydroxyl or nitro group, or lower alkyl or alkoxy group, wherein the other of A and B represents oxygen or sulfur atom, hydroxyl, mercapto, alkylthio, alkenylthio or aralkylthio group, or group represented by the formula (2), ##STR1##
摘要:
A waterproof packing includes: a core member including an electric wire passing part inside and a contacting part for fitting to a mounting side outside; and thermoplastic adhesive adhering to at least the electric wire passing part and the contacting part, wherein the waterproof packing adheres to an electric wire with the thermoplastic adhesive of the electric wire passing part and the waterproof packing adheres to the mounting side with the thermoplastic adhesive of the contacting part by heating. A waterproof connector includes: the waterproof packing; a connector housing for inserting an electric wire having a terminal therein; and a packing receiving part of the connector housing, wherein the waterproof packing is inserted in the packing receiving part as the mounting side.
摘要:
A connector of this invention has a plurality of openings at its rear wall for the insertion of terminals, terminal housing chambers communicating with these openings. Each terminal housing chamber has a pair of flexible arms supported by both the circumferential wall and the front wall of the connector housing, and an engagement member supported at both sides by the flexible arms. The terminal, upon insertion through the openings, engages with the engagement member, being prevented from being pulled out. The terminal housing chambers communicate with connection holes provided at the front wall of the connector. Mating terminals are inserted through the connection holes to be connected to the terminals.
摘要:
By devising the arrangement of memory arrays surrounding the central region of the chip, the total length of a data bus can be reduced. The memory arrays are arranged such that one of two memory arrays that are located at the positions point-symmetric with respect to the central region corresponds to lower DQ terminals, and the other memory array corresponds to upper DQ terminals. Preferably, the memory arrays corresponding to the upper DQ terminals and the memory arrays corresponding to the lower DQ terminals are each located collectively. Thus, a semiconductor memory device with improved data propagation characteristics on the data bus can be provided.
摘要:
A circuit generating a test mode instructing signal includes a test mode register circuit which is set to a state disabling instruction of a test mode in a standby state. An intended test mode can be accurately selected even when the test mode is instructed in accordance with a plurality of external signals varied in timing from each other. A semiconductor device allows accurate and efficient execution of the test without requiring increase in area occupied by an array.
摘要:
A semiconductor memory device includes a first test row decoder (9a) for selecting memory cells in normal rows in a test mode, a second test row decoder (9b) for selecting spare memory cell rows, a first test column decoder (10a) for selecting memory cells in normal columns, and a second test column decoder (10b) for selecting spare memory cell columns. A control circuit (11) may perform switching between four combinations of the row and column decoders by using a control signal (SRT) and a control signal (SCT). All spare memory cells are tested prior to reparation of a defective memory cell for yield enhancement.
摘要:
In a semiconductor memory device, a self refresh cycle program circuit is provided and a refresh operation is conducted in accordance with one of the refresh cycles programmed in the refresh-cycle program circuit. The refresh cycle of the self-refresh mode is selected from a plurality of refresh-cycle types. A plurality of refresh modes allows a refresh cycle to be selected from a plurality of refresh-cycle types in accordance with a selected refresh mode.
摘要:
A connector comprising a housing comprising a resin composition comprising (A) 100 parts by weight of a 4,6-nylon resin, (B) from 80 to 120 parts by weight of a polyphenylene ether resin modified with an unsaturated organic acid compound, and (C) from 0.1 to 0.4 part by weight of a copper halide.
摘要:
An incomplete fitting prevention connector wherein an insertion portion for a fixing bracket is provided at a female connector housing; a slide member is slidably provided on the female connector housing in abutment relation to a male connector housing inserted into the female connector housing; a retaining pawl is formed on the slider member so as to project to the insertion portion. Only when the male and female connectors are completely fitted together, the retaining portion of the slider member can be fitted relative to an engaging portion of the fixing bracket. Accordingly, the incomplete fitting between the male and female connector housing can be prevented.