摘要:
Centrifugal filtration capable of improving recovery of crystal in a baskey. The basket is so arranged that a central axis thereof is inclined with respect to a horizontal direction to obliqely downwardly orientate a bottom wall of the basket. A crystal recovery auction pipe is arranged which includes a pivotally movable section pivotally moved in the basket, of which a distal end is advanced into crystal in the basket. Crystal in the basket is recovered by suction through the distal end of the suction pipe, which is ultimately displaced to a corner of the basket between a lowermost portion of a peripheral wall of the basket and a bottom wall thereof. This permits crystal collected to a lowermost section of the basket to be substantially recovered by suction through the suction pipe, to thereby improve crystal recovery.
摘要:
Pyridazinone derivatives represented by the formula (I) and antiplatelet agents containing them: ##STR1## �wherein R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, X is a hydrogen atom, a chlorine atom or a bromine atom, Ar is a pyridyl group or a phenyl group substituted with OR.sup.1 (wherein R.sup.1 is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group) and A {wherein A is a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.4 alkyl group or OR.sup.2 (wherein R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group)}, is C.sub.1 -C.sub.8 alkylene wherein one carbon atom on the straight chain is substituted with one OR.sup.1 group (wherein R.sup.1 is the same as defined above), and Z.sup.1 and Z.sup.2 are independently a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.4 alkyl group or a OR.sup.1 group (wherein R.sup.1 is the same as defined above)!. These compounds have strong antiplatelet effects, are excellently safe, and can be used as active ingredients of prophylactic and therapeutic drugs for various thrombotic diseases.
摘要:
A magnetic disk apparatus having an unloading member for unloading a magnetic head from the surface of the magnetic disk when the driving of the same is stopped. One end of a spring arm has a magnetic head attached thereto and the other end of the spring arm is joined to a head arm which is rotated by a voice coil motor. The unloading member is set up on the base for rotation in a plane parallel to the plane of rotation of the head arm and has a first arm whose one end is capable of slide contacting the spring arm and a second arm whose one end is capable of abutting on the head arm. The one end of the first arm is beveled to facilitate its slide contact with the spring arm. The second arm of the unloading member is urged by a torsion spring in the direction of the head arm. When the driving is stopped, the magnetic head is moved to the outer side of the magnetic disk, so that the head arm abuts on the one end of the second arm. Thereby, the one end of the first arm is rotated toward the magnetic head so that the spring arm comes into slide contact with the beveled end of the first arm and goes on the first arm and, thus, the magnetic head becomes supported by the unloading member.
摘要:
An antiviral protein having an amino acid sequence represented by sequence No. 8 of a Sequence Listing is disclosed. The protein is obtained such that cysteine residues in the basic protein (MAP) obtained from Mirabilis jalapa and having antiviral activity are substituted with serine residues. More specifically, a MAP gene in which codons encoding cysteines are substituted with codons encoding serines is prepared, and this gene is integrated in a MAP secretion vector. This vector is introduced into a host to express the gene, thereby obtaining the antiviral protein. This protein retains MAP advantages as a toxic protein and has higher protein synthesis inhibition activity than that of MAP, and almost equal to that of a lysine A chain.
摘要:
A semiconductor device comprises a substrate of a first conduction type defined by a major surface, a pair of conductive regions of a second conduction type formed in the substrate along the major surface, an intervening region of the first conduction type formed in the substrate between the pair of conductive regions so as to separate the pair of conductive regions from each other, a first insulator film provided on the substrate so as to cover the major surface thereof including the pair of conductive regions and the intervening region located therebetween, a first conductor layer provided so as to extend generally parallel to the major surface of the substrate with a separation from the first insulator film, the first conductor layer crossing a part of the intervening region at a level separated therefrom, a second conductor layer provided on the first insulator film at a level below the first conductor layer so as to cover at least the part of the intervening region which is crossed by the first conductor layer, a second insulator film interposed between the second conductor layer and the first conductor layer, and a circuit for applying a predetermined voltage to the second conductor layer, the predetermined voltage having a magnitude chosen such that turning-on of a parasitic MOS transistor formed in the semiconductor device is eliminated.
摘要:
A compound of the formula, ##STR1## or its pharmaceutically acceptable salt, and its preparation process and pharmaceutical compositions characterized by containing these compounds as effective ingredients.These compounds have strong antithrombotic activity, cardiotonic activity, vasodilator activity and anti-SRS-A activity, and are useful as prophylactic or therapeutic agents for various thrombotic affections, congestive heart failure, hypertension, asthma, immediate type allergy diseases and the like.
摘要:
A paper transporting device for a photographic printer. A pulse motor starts rotating during a magazine setting operation. The rotation of the pulse motor is transmitted to a pair of feed rollers through a pin-clutch mechanism and a paper feed gear train. Immediately before a paper magazine is completely attached to the photographic printer, the feed rollers nip the leading end of photographic paper and pull the photographic paper out of the paper magazine. When changing the paper magazine, a solenoid is turned on to change over the pin-clutch mechanism from the paper feed gear train to a paper rewind gear train. Thereafter, the pulse motor is rotated in reverse, so as to rotate a winding shaft of the paper magazine through the pin-clutch mechanism and the paper rewind gear train. An unexposed portion of the photographic paper remaining in the photographic printer is thus wound back into the paper magazine.
摘要:
A testing method of a logic circuit which can change test data in a testing apparatus and an apparatus which is used for the testing method are disclosed. The logic circuit testing apparatus having a first storage to store test data including a plurality of test patterns and a second storage to store each of the test patterns in correspondence to a group of tester pins further has a transfer circuit including a data converter to change the test patterns from the first storage and a third storage to store control data to control the data converter. The transfer circuit transfers each of the test patterns from the first storage to the second storage. When the test pattern is transferred by the transfer circuit, the test pattern is changed by the data converter by the control data.
摘要:
A combined magnetic head system for recording a data track on a guard band between main tracks of a floppy disk. The system includes a control device for controlling a transfer mechanism so that the level of a second signal becomes equal to that of a third signal during the recording of a first signal, or so that the level of a first signal is maximized during the reproduction thereof, or so that a level of one of the reproduced second or third signals is maximized during the recording of the first signal. A guard band data head for data tracks is positioned above the guard band and has width so as to record satisfactorily data on the guard band without degrading recorded information on the main tracks irrespective of whether the recording is performed with the data head stretching over the main tracks. The width is preferably between 40% and 60% of the guard band.
摘要:
A roller-type automatic foil exchanger for supplying a foil beneath a window in a flange of a surface of a vacuum container of an electron beam irradiator includes a foil feed roller having foil wound thereon and a foil take-up reel for winding foil thereon. The foil is supported on a foil holder beneath the window and between the flange and the foil holder. A winding motor rotates the take-up reel to wind foil thereon and to unwind foil from the foil feed roller. A plurality of clamper members are provided to clamp the foil holder to the flange with the foil therebetween.