Abstract: An inner race of a first rolling bearing is fixed to a shaft, and an outer race thereof is fixed to an inner race of a second rolling bearing. In the first bearing, the outer race and rolling elements contact each other on the side of a center of the rolling elements closer to one end side in an axial direction, and the inner race and the rolling elements contact each other on the side of the center of the rolling elements closer to the other end side in the axial direction. In the second bearing, an outer race and rolling elements contact each other on the side of a center of the rolling elements closer to the one end side, and the inner race and the rolling elements contact each other on the side of the center of the rolling elements closer to the other end side.

Abstract: An inner race of a first rolling bearing is fixed to a shaft, and an outer race thereof is fixed to an inner race of a second rolling bearing. In the first bearing, the outer race and a rolling element contact each other on the side of a center of the rolling element closer to one end side in an axial direction, and the inner race and the rolling element contact each other on the side of the center of the rolling element closer to the other end side in the axial direction. In the second bearing, an outer race and a rolling element contact each other on the side of a center of the rolling element closer to the one end side, and the inner race and the rolling element contact each other on the side of the center of the rolling element closer to the other end side.

Abstract: A compound having the formula (1): can be produced with efficiency by using a compound represented by the formula (2): wherein R represents a protected hydroxyl group or a group represented by the formula (3): where R1 represents an alkyl group or an aralkyl group which may be substituted; and R2 represents an alkyl.

Abstract: To provide a grease composition for HDD which is excellent in low outgas generation and acoustic properties and a process for production thereof. In a grease composition used in the bearing for a hard disk drive, a basal oil comprising a paraffin-base hydrocarbon and a polyurea as a thickener are contained.

Abstract: A detachable gas analyzing apparatus has a plurality of gas analyzer units insertable into and removable from a the front side of a container case. Complementary electrical and gas connectors are disposed on the rear side of the gas analyzer units and the container case. Guides and engaging rails guide the gas analyzer units as they are inserted into the container case. The gas connectors are substantially self-aligning by the provision of complementary tapered portions formed on gas sockets and plugs. The gas connectors also align the electrical connectors and provide compensation for linear misalignment. A plurality of gas connectors may also be employed, forming a number of inward and outward gas passages.

Abstract: The compounds of the present invention inhibit HMG-CoA reductase, subsequently suppress the synthesis of cholesterol; and are useful in the treatment of hypercholesterolemia, hyperlipoproteinemia, and atherosclerosis.

Abstract: A compound of the formula: ##STR1## wherein R.sup.1 and R.sup.2 each is hydrogen, hydroxy, oxo, halogen, azido, amino, C.sub.1 -C.sub.3 alkylamino, or aminomethyl, in which said amino, C.sub.1 -C.sub.3 alkylamino and aminomethyl each is optionally substituted by one or two members selected from the group consisting of C.sub.1 -C.sub.3 alkyl and amino-protecting group; n is an integer of 1 to 3; p and q each is an integer of 0 to 3 with proviso that p+q=1 to 4 or acid-addition salts thereof, being useful materials for preparing side chains of antibacterial quinolonecarboxylic acids, cephalosporines, or other antibiotics.

Abstract: Novel pyridonecarboxylic acids of the formula: ##STR1## or the pharmaceutically acceptable salts thereof having a more potent and longer lasting antibacterial activities against gram-positive and gram-negative bacteria than known analogues, useful for antibacterial agents at an oral dose of 1-500 mg, preferably 50-100 mg per day to an adult.

Abstract: A sampling pipe device for connection to a fluid analyzer mounted in a substantially vibration free condition and having at least one fluid introducing pipe extending therefrom. The sampling pipe device has a pipe connecting block having a number of recesses therein corresponding to the number of fluid introducing pipes on the analyzer, each recess having a diameter larger than the outside diameter of the corresponding fluid introducing pipe and having a sampled fluid introducing opening therein for introducing the sampled fluid into the recess. The pipe connecting block is in a fixed position relative to the analyzer with a fluid introducing pipe in each recess in non-contact relationship to the inside wall of the recess.

Abstract: A sample gas extracting apparatus constituted by a plurality of parallel connected constant flow-rate gas lines each having a critical flow Venturi connected in the downstream portion, relative to the direction of gas flow therethrough, thereof and a changeover valve in the upstream portion, relative to the direction of gas flow therethrough, thereof which can be changed over for passing sample gas to the corresponding critical flow Venturi or for passing air to the corresponding critical flow Venturi. A sample gas line is connected to the upstream end of the parallel connected constant flow-rate gas lines and has a sample gas extracting device connected therein just upstream of the constant flow-rate gas lines. A suction device is connected to the downstream end of the parallel connected constant flow-rate gas lines and having a suction capacity greater than the total of the critical gas flow rates of the critical flow Venturi's and less than that which will cause a surging phenomenon in the apparatus.