Abstract: A deflection yoke assembly for use on a cathode ray tube including an evacuated envelope, a coil separator mounted exteriorly on the evacuated envelope at a location corresponding to the boundary betweeen the funnel section and the neck section and having a generally conical portion, a radially outwardly flanged front end portion at one end of the conical portion and a radially outwardly flanged rear end portion at the opposite end of the conical portion, a pair of horizontal deflection coils and a pair of vertical deflection coils both wound on the coil separator. The deflection yoke assembly comprises a vertical deflection distortion correcting unit including two electromagnetic coil devices mounted on at least said radially outwardly flanged front end portion of the coil separator in alignment with a vertical axis of the evacuated envelope while spaced 180.degree. circumferentially about the longitudinal axis of the envelope.

Abstract: A color cathode ray tube which includes an evacuated envelope having a phosphor deposited screen and an electron gun assembly positioned in opposition to the phosphor deposited screen and operable to emit electron beams towards the phosphor deposited screen, and an apertured shadow mask disposed inside the envelope in the vicinity of and generally parallel to the phosphor deposited screen and spaced a predetermined distance from the phosphor deposited screen. The pitch between each of the neighboring apertures in the shadow mask as measured in a vertical direction perpendicular to a horizontal scanning line is chosen to be a value variable as a function of the distance away from the center of the phosphor deposited screen.

Abstract: Pharmaceutical preparations for intraarterial administration use comprising highly fat soluble derivatives of 5-fluoro-2'-deoxyuridine having the antitumor activity and oleaginous bases, wherein the property of selectively migrating to the tumor tissue and the accumulating function of 5-fluoro-2'-deoxyuridine esters are remarkably improved.

Abstract: An antitumor agent comprising (i) at least one pyrimidine type nucleic acid derivative having the general formula (I): ##STR1## wherein X represents a fluorine atom or a trifluoromethyl group, R.sup.1 and R.sup.2 may be the same or different and represent a hydrogen atom or an acyl group, R.sup.3 represents a hydrogen atom or a hydroxyl group, and(ii) at least one 1-[(2-hydroxyethoxy)methyl]uracil derivative having the general formula (II): ##STR2## wherein Y represents a hydrogen atom, a halogen atom, a methyl group, a benzyl group, a benzyloxybenzyl group, a vinyl group, a nitro group, or an amino group and R.sup.4 represents a hydrogen atom or an acyl group.

Abstract: A method of inhibiting viral replication in a cell comprising administering an effective amount of an esterified derivative of 5-halogenated-2'-deoxy-uridine expressed by the following formula (I) ##STR1## wherein X represents any one of F, Cl, and Br; R.sup.1 and R.sup.2 may be identical or different from each other, each representing an aliphatic acyl group comprising two or more carbon atoms or an aromatic acyl group comprising 7 or more carbon atoms.

Abstract: A 5-fluoro-2'-deoxyuridine derivative expressed by the following formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different from each other, each representing an alkyl group of 1 to 18 carbon atoms having a carboxyl group as a substituent, or an alkyl group of 9 to 14 carbon atoms, or its pharmacologically acceptable salt as the active ingredient.Said 5-fluoro-2'-deoxyuridine derivative displays a high-level antitumor effect in low doses and shows outstanding safety.

Abstract: A superconducting magnet comprising a superconducting coil disposed in an insulation housing, a heat insulation support rod for supporting said superconducting coil against a room temperature wall of the insulation housing, a heat insulation plate disposed on a side of the superconducting coil, and a thermal anchor inserted between said insulation rod and said superconducting coil and carrying a cooling pipe to provide a path for a refrigerant carrier to flow through. The heat insulation plate has a higher heat resistance than that of the thermal anchor to reduce the influent heat from the room temperature wall to the superconducting coil so as to improve performance of the superconducting magnet.

Abstract: A superconducting magnet with an auxiliary heat shield for providing additional shielding of a superconducting coil against heat radiation. The auxiliary heat shield is disposed between a superconducting coil bonded to a cylindrical coil care and a main heat shield on the radially inner side of the superconducting coil.

Abstract: A superconducting apparatus comprises a superconducting coil, a cryogenic fluid for cooling the coil, a vessel for enclosing the superconducting coil and the cryogenic fluid, a current lead penetrating into and supported by the vessel and electrically connected to the superconducting coil, and an electrically insulating tube disposed around the current lead. The insulating tube includes an electrically insulating ring disposed around the current lead between the vessel and the current lead and outside of the vessel for electrically insulating and hermetically sealing between the current lead and the vessel, a hollow electrically insulating cylinder disposed around the current lead, and means disposed between the insulating ring and the cylinder for continuously connecting the ring and the cylinder thereby to substantially close any gap therebetween against electrical discharges therethrough.

Abstract: A superconductive magnet comprises in combination a magnetic shield made of a magnetic material and having an opening in the wall surface thereof, which passes through it, and a superconductive winding which is received and held within said magnetic shield, wherein the wall surface of said magnetic shield positioned in symmetry with the position of said opening part in both circumferential and longitudinal directions is made of a non-magnetic material.