Abstract: The addition of a compound containing an aliphatically unsaturated bond as a storage stability improver to a hydrosilylating addition reaction type hardenable electrically-conductive composition comprising at least one alkenyl group-containing isobutylene polymer which can undergo hydrosilylation reaction per molecule and an electrical conductivity-providing material makes it possible to obtain an electrically-conductive composition having an excellent storage stability at high temperatures. Further, the use of such an electrically-conductive composition makes it possible to provide an electrically-conductive roller having an excellent productivity and processability and an excellent stability of electrical properties against environmental change.

Abstract: A novel peptide obtained from Haemophilus paragallinarum has been found useful for preventing avian infectious coryza. This polypeptide induces production of hemagglutination-inhibition antibody and prevents infection and onset of avian infectious coryza. The invention further provides a gene coding for the polypeptide, a recombinant vector for expression of this gene, a host transformed with this vector, a process for preparing the polypeptide in a host, a vaccine for avian infectious coryza comprising the polypeptide as an active ingredient, a monoclonal antibody obtained using the polypeptide as an immunogen, and a diagnostic agent and a therapeutic agent for avian infectious coryza using the peptide and the antibody.

Abstract: A novel peptide obtained from Haemophilus paragallinarum has been found useful for preventing avian infectious coryza. This polypeptide induces production of hemagglutination-inhibition antibody and prevents infection and onset of avian infectious coryza. The invention further provides a gene coding for the polypeptide, a recombinant vector for expression of this gene, a host transformed with this vector, a process for preparing the polypeptide in a host, a vaccine for avian infectious coryza comprising the polypeptide as an active ingredient, a monoclonal antibody obtained using the polypeptide as an immunogen, and a diagnostic agent and a therapeutic agent for avian infectious coryza using the peptide and the antibody.

Abstract: The preset invention provides a method for immunizing chickens which comprises inoculating into growing egg a composition comprising either cell-free attenuated viruses of Marek's disease type 1 or cells infected with attenuated viruses of Marek's disease type 1 capable of producing cell-free viruses. The present invention also provides a method for immunizing chickens which comprises inoculating into growing egg a mixed vaccine comprising said composition plus another vaccine from at least one microorganisms selected from the group consisting of viruses other than virus of Marek's disease type 1, bacteria and protozoan.

Abstract: It is an object of the present invention to provide a curable composition comprising a crosslinking silyl-containing saturated hydrocarbon polymer and providing good weather-resistant adhesion.

Abstract: By incorporating (A) a saturated hydrocarbon polymer having more than one alkenyl group capable of being hydrosilylated in each molecule and having a molecular weight of 2,000 to 50,000, (B) a component comprising a compound containing more than two silicon atom-bound hydrogen atoms, on average, in each molecule, (C) a compound having, within the molecule, one alkenyl group capable of being hydrosilylated, (D) a compound having, within the molecule, at least two alkenyl groups capable of being hydrosilylated and having a molecular weight less than 2,000, and (E) a hydrosilylation catalyst, a composition having good mechanical characteristics, a high gel fraction and a small heating loss can be obtained. As a result, the invention can provide a composition to secure the uniformity within a wide range of selection not depending on its viscosity, because it is markedly relaxed the restriction on SiH-containing compounds that are curing agents possibly becoming a cause of said insufficient curing.

Abstract: A curable resin composition containing (A) a saturated hydrocarbon polymer having at least one reactive silicon-containing group in a molecule, and (B) a hydrogenated oligomer of an &agr;-olefin, or a curable resin composition containing (A) a saturated hydrocarbon polymer having at least one reactive silicon-containing group in a molecule, (C) a saturated hydrocarbon oligomer, and (D) an ester plasticizer, both of which have good workability, in particular, at low temperature.

Abstract: This invention provides a composition for double glazing use which satiskfies the requirement of both low moisture permeability and weather-resistant adhesiveness and also has rapid hardenability by addition type curing, can be produced by a line process and is able to be used as a one-pack sealant having excellent shelf stability and mechanical properties, and the composition for double glazing use of this invention comprises (A) a hydrocarbon polymer having at least one alkenyl group in its molecule and a molecular weight of 500 to 300,000, (B) a curing agent having at least two hydrosilyl groups in its molecule, (C) a hydrosilylation catalyst and (D) a tackifier as essential components. When the composition for double glazing use requires one-pack adhesive property, shelf stability improving agent (E) is further used in addition to the components (A) to (D). An isobutylene polymer is desirable as the component (A), and a polyorgano hydrogen siloxane as the component (B).

Abstract: A curable composition comprising the components (A), (B), (C) and (D), viz.(A) an isobutylene polymer which contains in a molecule, at least one alkenyl group capable of hydrosilylation reaction;(B) a curing agent which contains at least two hydrosilyl groups in a molecule;(C) a hydrosilylation catalyst; and(D) an organic compound which contains in a molecule, at least one alkenyl or alkynyl group capable of hydrosilylation reaction.This composition is excellent in workability because of its low viscosity, and has such advantages that the cured product thereof has large strength and further that the weight loss by heating is small. Since a large amount of an inorganic filler can be blended with this composition, it is possible to obtain a composition having high thixotropy and little sagging.

Abstract: The curable compound of the invention is used as a two-part or many-part curable compound, and water or a hydrated metal salt is added to the curing agent containing a silanol condensation catalyst.Thus, the compound of the invention is a curable compound comprising at least two components: (A) a main ingredient which contains a saturated hydrocarbon polymer containing silicon-containing groups which have hydrolyzable groups bonded to the silicon atom and which are crosslinkable by forming siloxane bonds, and (B) a curing agent containing a silanol condensation catalyst and water or a hydrated metal salt.

Abstract: It is an object of the invention to improve the adhesive property of a curable composition mainly comprising a reactive silyl group-containing saturated hydrocarbon polymer when applied to various adherends and to improve the weathering-resistant adhesive property of said composition when applied to various glass products, in particular heat ray-reflecting glass products.The present invention relates to a curable composition which comprises (A) a saturated hydrocarbon polymer containing at least one silicon-containing group having a hydroxyl group or hydrolyzable group bound to the silicon atom and capable of crosslinking by forming a siloxane bond, (B) a silane coupling agent and (C) a compound containing, within the molecule thereof, an unsaturated group capable of polymerizing upon reaction with atmospheric oxygen and/or a photopolymerizing substance.

Abstract: A recombinant herpes virus is provided which efficiently expresses an exogenous protein of interest in an inoculated animal host to thereby endow the host with excellent immunization. A recombinant herpes virus which incorporates an exogenous gene expression cassette in which a herpes virus-derived gB gene (a gene homologous to herpes simplex virus gB gene) promoter is used as a promoter for expression of an exogenous gene.

Abstract: A process for producing a flat heat exchange tube having parallel refrigerant passages in its interior and comprising flat upper and lower walls, opposite side walls and a plurality of reinforcing walls connected between the upper and lower walls, extending longitudinally of the tube and spaced apart from one another by a predetermined distance, using a rolling mill including a central work roll and a plurality of planetary work rolls arranged around a portion of the periphery of the central work roll and spaced apart circumferentially thereof, the central work roll being formed with parallel annular grooves in the periphery thereof.

Abstract: A recombinant Marek's disease virus produced by the mutation of a Marek's disease virus with a plasmid wherein said plasmid comprises (1) a gene fragment derived from the Us region or inverted repeat sequences adjacent to both ends of said Us region of a Marek's disease virus genome and (2) an exogenous gene expression cassette incorporated in said gene fragment, said cassette comprising an exogenous gene bound downstream of a promoter derived from an animal cell or an animal virus, a process for preparing the same, a multivalent live vaccine for birds comprising the same, and a vector for administration of a physiologically active substance to birds which comprises the same.

Abstract: An aluminum foil to be etched for use as the electrolytic condenser electrodes is composed of a foil body of an aluminum purity of 99.9% or higher, and an oxide layer 20-70 .ANG. thick and formed due to contact of the foil body with an oxidizing atmosphere. At least one etching nuclei-forming element is concentrated in a boundary region and/or in an outermost surface region of the oxide layer, the boundary region being disposed between the foil body and the oxide layer, and both the regions having a thickness of 20 .ANG. or less. The ratio in ion intensity of a maximum concentration of the elements in these regions to a concentration of the elements in the inner layer of the foil body is 1.2-30. There are three patterns in distribution of the elements, so that the maximum concentration is in a predetermined ratio to the concentration in the surface region, the inner layer or a minimum concentration appearing between the regions.

Abstract: Aluminum foils used as a material of electrodes in electrolytic capacitors are manufactured by a method which comprises a step of forming at first an initial internal oxide coating 5 to 50 .ANG. thick on the surface of the aluminum foils before they are electrochemically or chemically etched later. The aluminum foils are then subjected to high temperature heat treatment such that the whole thickness of the oxide coating does not exceed 70 .ANG..

Abstract: A recombinant Marek's disease virus which comprises a Marek's disease virus genom and a DNA fragment incorporated therein, said DNA fragment being constructed by incorporating a promoter derived from an animal cell or an animal virus and a structural gene coding for an exogenous protein into a gene fragment derived from a Marek's disease virus, a process for preparing the same which comprises preparing a gene fragment wherein a structural gene coding for an exogenous gene is linked to the downstream of a promoter derived from an animal cell or an animal virus, incorporating said gene fragment into a BamHI - H fragment of a gene of a Marek's disease virus type I, and incorporating said fragment into a Marek's disease virus type I genome, and a multivalent live vaccine for birds comprising the same.

Abstract: To obtain a high-purity aluminum fraction from aluminum containing both eutectic impurities and peritectic impurities, the contents of these impurities in the original aluminum are reduced by melting the original aluminum to obtain molten aluminum, adding boron to the molten aluminum, and rotating a cooling body as immersed in the boron-containing molten aluminum while introducing a cooling fluid to the interior of the body to crystallize high-purity aluminum on the surface of the body. The peritectic impurities react with the boron to form metallic borides, which are centrifugally forced away from the cooling body by the rotation of the body without being incorporated into the aluminum crystallized on the surface of the body. The eutectic impurities are removed from the crystallized aluminum on the surface based on the principle of segregation.

Abstract: An improved cast ingot of aluminum alloy satisfactorily available for rolling operation containing Fe is disclosed which has no fir-tree structure or has only a very small region of fir-tree structure. This cast ingot of aluminum alloy contains calcium in the range of 0.0005 to 0.05% and has a grain size smaller than 150 microns in the region extended inward of a coarse cell phase on the surface area of the cast ingot, particularly in the vicinity of said coarse cell phase. The cast ingot is manufactured by way of the steps of addition of the above amount of calcium to molten aluminum alloy, supplementary addition of 0.005 to 0.1% Ti and 0.0001 to 0.02% B to the molten aluminum alloy and then continuous D.C. casting.