Abstract: A method of artificially rearing lobster larvae, in which lobster larvae of the Palinuridae and Scyllaridae families are guided toward jellyfish so that the lobster larvae parasitize the jellyfish and grow on the host jellyfish. An apparatus for rearing lobster larvae wherein a symbiotic feeding tank (1), in which the larvae are reared in the state of being parasitic on the jellyfish, and a jellyfish rearing tank (2) are connected together via a pipe (3), through which water and the jellyfish are supplied from the jellyfish rearing tank (2) to the symbiotic feeding tank (1), and the pipe (3) is provided with a switching valve (7).

Abstract: A net-mouth inclined trawl-net apparatus includes a substantially rectangular frame and a trawl net attached to the frame. The trawl net is formed of an upper net, a lower net, and a pair of side nets, and the trawl net has a shape formed of a body part of a quadrangular trapezoid shape. Each of the side nets attached to the frame has a longer side and a shorter side as an upper side and a lower side, and a side of each side net defining a net-mouth edge defines a side-net front edge inclination angle relative to a bottom side of an isosceles trapezoid having the shorter side of the side net as a side of the isosceles trapezoid, so that the frame autonomously maintains an inclination angle relative to the vertical axis due to a flow resistance and a lift acting on the net.

Abstract: Problem to be Solved To provide a small, lightweight, cryo-rotary joint. Solution A joint includes a housing 2, a refrigerant tube 3 connected to a refrigerant source and communicated with a target part in a rotating machine, a rotating member 4 loosely fitted inside with the refrigerant tube and fixed to a rotary part of the rotating machine, and a relatively rotating member 5 having a fixed-side member 5a and rotating-side member 5b, wherein the fixed-side member is connected to the refrigerant tube via a refrigerant tube extension section 3a, the rotating-side member is connected to the rotating member via a rotating member extension section 4a, a refrigerant zone is formed by spaces 7 and 8 defined by the refrigerant tube, rotating member, and refrigerant tube and rotating member extension sections, a sealing member 10 is installed between the fixed-side and rotating-side members, and a vacuum chamber and pressure chamber are defined within the housing.

Abstract: The present invention provides a superconductive rotating electric machine drive control system that has higher efficiency and is smaller size and lighter in weight than conventional systems, and also provides a superconductive rotating electric machine drive control method to be implemented in the superconductive rotating electric machine drive control system. By the superconductive rotating electric machine drive control system and the superconductive rotating electric machine drive control method in accordance with the present invention, a control operation is performed so that the field current If2 applied to the superconductive field winding of the synchronous rotating electric machine satisfies an equation for the field current If2 in accordance with the variation of the electric power exchanged between the synchronous rotating electric machine and the power unit.

Abstract: The present invention provides a DNA vaccine for carps for inducing protective immunity against Koi herpesvirus (KHV). The DNA vaccine comprises a DNA comprising a nucleotide sequence encoding an immunogenic polypeptide against Koi herpesvirus (KHV) of carps, or an expression vector comprising the DNA as an active ingredient.

Abstract: A reagent kit for measuring freshness, which can be stored at a relatively high temperature with high storage stability, is obtained by lyophilizing reagent solutions each containing a plurality of enzymes and an enzyme protecting agent. The reagent kit includes a first reagent and a second reagent. The first reagent is obtained by drying a frozen product of a first reagent solution containing XOD, NP, an enzyme protecting agent, and a color former under reduced pressure at a temperature not higher than the glass transition temperature (Tg). The second reagent is obtained by drying a frozen product of a second reagent solution containing XOD, NP, AP, an enzyme protecting agent, and a color former under reduced pressure at a temperature not higher than the glass transition temperature (Tg). The enzyme protecting agent is sucrose and/or gelatin, and the color former develops a color by conjugation with a reaction of decomposing Hx into xanthine and uric acid by XOD.

Abstract: An object of the present invention is to provide a means for distinguishing between a germ cell derived from a donor (tuna) and a germ cell derived from a recipient in a method for inducing differentiation of a tuna germ cell, wherein a primordial germ cell derived from the tuna is transplanted into an early embryo of the heterologous recipient fish. The present inventors compared a Vasa amino acid sequence of bluefin tuna with those of other fish (black skipjack, skipjack, chub mackerel, blue mackerel, round frigate mackerel and frigate mackerel), identified amino acid sequence regions specific to bluefin tuna, and, by using the amino acid sequences specific to bluefin tuna as antigens, successfully produced monoclonal antibodies specifically recognizing primordial germ cells, spermatogonia, oogonia or oocytes derived from bluefin tuna, thus accomplishing the present invention.

Abstract: A trawl net layer-by-layer collecting device includes a rectangular cylindrical frame configured to draw a plurality of trawl nets that are arranged in an up and down direction. The frame includes an upper edge to which a net mouth edge of an upper net of the uppermost trawl net is anchored, and a lower edge to which a net mouth of a lower net of the lowermost trawl net is anchored. A pair of vertical bars are disposed on opposed sides of the frame. A slider having opposed ends slidably engaged with the vertical bars, the slider anchoring thereto the net mouth edge of the lower net of the upper trawl net and the net mouth edge of the upper net of the lower trawl net. A net-mouth opening and closing unit is configured to lock the sliders on upper ends of the vertical bars, and unlock the locked sliders one by one; and a controller.

Abstract: The present invention provides a new supply source of phospholipase A1, which is useful for phospholipid modification and lipid biochemical research, and offers a method capable of efficiently manufacturing a large amount of high DHA content phospholipids and lysophospholipids. A novel microorganism HFKI-0020 (FERM AP-20545) of the genus Pseudomonas which produces enzymes with phospholipase A1 activity can be used as a new supply source of enzymes with the phospholipase A1 activity. A lipid-modifying agent containing an effective dose of enzymes with the phospholipase A1 activity produced by those novel microorganisms allows the efficient mass-production of lysophospholipids.

Abstract: There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention comprises: a first switch S1 and a second switch S2 that are connected in series between power sources Ed; a first capacitor C1, an impedance element R, and an inductor element L that are connected in series between a connecting path connecting the first switch S1 and the second switch S2 and one end of the power sources Ed; and a second capacitor C2 connected in parallel to the impedance element R and the inductor element L that are connected in series.

Abstract: There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention comprises: a first switch S1 and a second switch S2 that are connected in series between power sources Ed; a first capacitor C1, an impedance element R, and an inductor element L that are connected in series between a connecting path connecting the first switch S1 and the second switch S2 and one end of the power sources Ed; and a second capacitor C2 connected in parallel to the impedance element R and the inductor element L that are connected in series.

Abstract: An exhaust gas cleaning apparatus and a filter regeneration apparatus that are capable of cleaning a large volume of exhaust gas without any increase in size of a nonmagnetic member around which a working coil for induction heating is wound. The exhaust gas cleaning apparatus includes a particulate collecting section and a filter regenerating section placed next to each other in the flow direction of an exhaust gas, and a movable frame. The movable frame holds an extension of a filter unit extending from a casing of the particulate collecting section beyond the support frame of the filter regenerating section, and can move the filter unit in the axial direction of the casing. When the filter unit moved by the movable frame passes through the filter regenerating section, a corresponding part of a holding frame disposed in the filter unit is continuously induction-heated to burn collected particulates, such that the filter unit can be regenerated.

Abstract: There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention comprises: a first switch S1 and a second switch S2 that are connected in series between power sources Ed; a first capacitor C1, an impedance element R, and an inductor element L that are connected in series between a connecting path connecting the first switch S1 and the second switch S2 and one end of the power sources Ed; and a second capacitor C2 connected in parallel to the impedance element R and the inductor element L that are connected in series.

Abstract: A linear regression equation, ?1=?(?×h)+?, is obtained based on a depth h to a water zone of a predetermined water temperature, respective densities ?1 and ?2 of upper and lower layers above and below the water zone, and an absolute dynamic topography ?1 obtained based on data measured by satellite (?=(?2??1)/?2). Further, h? (depth of the water zone of the predetermined water temperature at each of a large number of spots) is determined according to this equation, ?2=?(??×h?)+?, based on ?? for each of the large number of spots calculated based on historical data, an absolute dynamic topography ?2 at each of the large number of spots based on data measured by satellite, and the values ? and ?.

Abstract: A center-of-gravity detection system includes a vehicle capable of carrying cargo and adapted to be towed by a towing vehicle, a shake detector configured to detect shakes in the directions of the self-weight and width of the towed vehicle during travel of the towed vehicle, and an arithmetic unit. The arithmetic unit is configured to derive, based upon physical quantities that correlate with the shakes, the location of the center of gravity, in three-dimensional space, of the towed vehicle.

Abstract: A magnetizing device for superconductor and a superconducting synchronous machine are provided capable of constituting more compact and simple equipment that uses a superconductor as a magnet. The magnetizing device for superconductor includes a superconductor (131); a coolant chamber (142) for cooling the superconductor (131) down to or below a critical temperature at which the transition to a superconducting state occurs; coils (111, 111?) for generating a magnetic field equal to or higher than a critical magnetic field in which the intrusion of a magnetic flux into the superconductor (131) starts, around the superconductor (131) cooled down to or below the critical temperature at which the transition to the superconducting state occurs; and position modification means capable of arranging the superconductor (131) on a disk (120) and modifying the relative positional relationship with the coils (111, 111?).

Abstract: In order to examine whether or not a germ cell derived from a donor fish, which has been transplanted into a recipient fish of a different species by a surrogate fish technique, grows or matures in the gonad of the recipient fish, it is necessary to use, as an indicator, a trait that is specifically expressed in the germ cell and can be used to distinguish the recipient fish from the donor fish. Vasa gene, which is a germ cell-specific gene, is specific to a primordial germ cell and a spermatogonium/an oogonium, and it is not expressed in a somatic cell. In the present invention, the Vasa gene sequences of a tuna, a chub mackerel, a spotted mackerel, an eastern little tuna, and a drumfish are determined, and the expression of such gene is used as a marker for a germ cell. In addition, according to the present invention, it is possible to specifically detect only a tuna Vasa gene in Vasa gene sequences that are highly conserved in fishes, without sequencing.

Abstract: Survey of fishery resources is automatically effected by providing an identification element (i.e. IC tag) to each fishing gear, locating a plurality of such fishing gears under the sea to catch fishery resources, thereafter, using a reading device (e.g. tag reader) to read all the identification elements to obtain an identification data for each of the fishing gears, while obtaining an operating position in this survey by GPS device, and then counting number of fish catches for each of the fishing gears. All the data thus obtained are processed by a computer, so that a data of fishery resources distribution under the sea can be obtained automatically, without requiring much labor and expenses in conducting the survey. A device for effecting such method is also provided.

Abstract: The object is to provide a highly safe NF-?B activation inhibitor at a low cost which can be used for prevention and treatment of diseases associated with the activation of NF-?B such as inflammation or type-2 diabetes. Specifically, the NF-?B activation inhibitor comprises a compound represented by the chemical structural formula depicted in the following Chemical Formula 1 [wherein R1 represents a hydroxy group; R2 represents a hydroxy group, a methoxy group or an alkoxy group; and R3 represents an ester comprising triterpene or a salt thereof] or a salt of the compound as active ingredient. A representative example of the compound is hydroxycinnamic acid derivative triterpene alcohol ester.

Abstract: The present invention provides a new supply source of enzymes useful for modification of phospholipids for example, and also provides a method for producing 2-acyl lysophospholipid, a method for producing monoacylglycerol, and a method for producing ceramide, as well as a new method for degumming fat and oil. A novel microorganism is provided, which belongs to Moritella species and is capable of producing enzymes provided with: phospholipase A1 activity; phospholipase C activity; lysophospholipase C activity; and sphingomyelinase activity. By use of those enzymes, the following processes may be effected: hydrolysis of phospholipids for production of 2-acyl lysophospholipid and diacylglycerol; hydrolysis of sphingomyeline for production of ceramide; and degumming of fat and oil.