摘要:
A sulfonic acid ester derivative represented by the general formula ##STR1## wherein R.sub.1 is a hydrogen atom, alkyl having 1 to 4 carbon atoms or alkoxy having 1 to 4 carbon atoms, A is a group represented by the general formula ##STR2## (wherein R.sub.2 and R.sub.3 are each alkyl having 1 to 4 carbon atoms) or by the general formula ##STR3## (wherein R.sub.4 and R.sub.5 are each alkyl having 1 to 4 carbon atoms or, when taken together with the carbon atom to which they are attached, form cycloalkyl having 4 to 6 carbon atoms), and l is an integer of from 1 to 3, and a process for preparing the derivative.
摘要:
A weather strip to be installed around an opening of an automobile, has a trim portion of a letter U-shaped section, which is composed of parallel side walls and a bottom wall connecting the side walls, and a seal portion projecting from an outer surface of one of the parallel side walls, which is positioned on the outside of the automobile when the trim portion is mounted on a flange formed around the opening. The bottom wall is inclined in such a direction as to make an acute angle with the one side wall. In the weather strip wherein the bottom wall is inclined with respect to the side walls, the trim portion can be prevented from twisting and leaning even when being curved along the corner portion, and mounted thereon. And at this time, good sealing properties can be maintained together with good external appearance.
摘要:
A piperazine derivative represented by the formula (I) below ##STR1## wherein R.sup.1 is lower alkyl or phenyl, R.sup.2 is hydrogen or lower alkyl, n is an integer of 2 to 10, is useful as an effective component of anti-inflammatory agent or antiallergic agent.
摘要:
A vertical transistor comprises a semiconductor region, a pillar region formed on the semiconductor region, a gate insulating film formed so as to cover a side surface of the pillar region, a gate electrode formed on the gate insulating film, a first impurity diffusion region formed in an upper portion of the pillar region, and a second impurity diffusion region formed in the semiconductor region so as to surround the pillar region. The first impurity diffusion region is formed so as to be spaced from the side surface of the pillar region.
摘要:
A method for manufacturing a STI structure includes the steps of anisotropic-etching the surface of a silicon substrate to form a trench, forming a first thermal oxide film on the surface of the trench at a substrate temperature of 1000 degrees C. or above, removing the first oxide film, anisotropic-etching the bottom of the trench to increase the depth of the trench, forming a second oxide film on the surface of the trench, and embedding an insulator in the trench.
摘要:
A bicyclolactam compound of the formula (1) is disclosed, which has an excellent anxiolytic effect, is high in safety, and is useful as an effective component of medicinals which are greatly diminished in side effects such as hypnotic, muscle relaxant and sedative effects ##STR1## A bicyclolactam derivative represented by the following formula (1) is also disclosed, and is useful as an effective component of an anxiolytic agent ##STR2##
摘要:
A suspension control apparatus comprises a sprung velocity measuring device for measuring a sprung velocity, a relative velocity measuring device for measuring a relative velocity between the sprung and unsprung velocities, a controller for mode-converting, weighting and inversely mode-converting the sprung velocity and relative velocity, and having a dead zone setting circuit for changing over a control value when the polarity of the velocity difference is inverted at a first time, in order to calculate a velocity ratio and determine a target damping force, and an actuator for controlling the opening area in the variable throttle mechanism communicating with the cylinder piston apparatus of absorber was disclosed. The suspension control apparatus has the effect that there is no delay in controlling and any shock and the generation of hunting is prevented.
摘要:
Unit cells and separator elements are stacked in layers, thus constituting a stacked structure of a fuel cell. A first segment channel, which is bored through the peripheral region of each separator element, communicates with a second segment channel formed in a cylindrical seal member which is joined to each two adjacent separator elements. Thus, manifolds for the intake and exhaust of a fuel gas and an oxidant gas are defined. The cylindrical seal member includes a pair of ring-shaped metal members joined to each two adjacent separator elements and a ring-shaped insulating member interposed between the metal members. Thus, the gases in the manifolds can be prevented from leaking out, and the adjacent separator elements are insulated from one another.
摘要:
The present invention provides a taurine-type compound of the formula ##STR1## wherein R is a phenyl group optionally having substituent(s) selected from lower alkyl, halogen-substituted lower alkyl, lower alkoxy, lower alkanoyl and halogen atom; and n is 2 or 3. The above compound is useful as an agent for improving microcirculation.
摘要:
A method for producing a weather strip of which the sectional shape is continuously changed in its longitudinal direction, has the steps of simultaneously extruding two rubber members out of two outlet ports formed in an extrusion head of an extruder so as to be close to and parallel with each other, each of the two rubber members having a uniform sectional shape in each longitudinal direction, corresponding to each of two pieces obtained by cutting the weather strip in its longitudinal direction, overlapping opposed side portions of the two extruded rubber members, joining the overlapped portion to obtain a joined weather strip of which the sectional shape is continuously changed in its longitudinal direction, and feeding the joined weather strip into a vulcanizing bath to be vulcanized. The overlapping step and the joining step are performed by feeding the two extruded rubber members between a receiving roller disposed in front of the extruding outlets, and a pressing roller disposed directly above the receiving roller. The receiving roller has a guide groove in its outer periphery, of which the width is changed in the peripheral direction of the roller, and the pressing roller presses the overlapped portion of the two extruded rubber members within the guide groove of the receiving roller.