Nikkiso Co., Ltd.

A semiconductor light-emitting element has an n-type semiconductor layer arranged on a base layer, and is made of an n-type AlGaN-based semiconductor material; an active layer arranged on the n-type semiconductor layer, and is made of an AlGaN-based semiconductor material; a p-type semiconductor layer arranged on the active layer; a p-side contact electrode that contacts the top face of the p-type semiconductor layer; a dielectric protective layer that covers the p-side contact electrode, contacts the top face of the p-type semiconductor layer, and is made of SiO 2 ; and a dielectric cover layer that contacts the individual side faces of the active layer and the p-type semiconductor layer, contacts the top face of the p-type semiconductor layer, covers the dielectric protective layer, and is made of Al 2 O 3 .

A lactic acid removal device includes a solution that contains lactic acid and glucose, a vessel that contains the solution, and a lactic acid adsorbent disposed to be in contact with the solution, the lactic acid adsorbent being brought into contact with the solution and adsorbing lactic acid in the solution. The lactic acid adsorbent includes a layered double hydroxide that contains a plurality of metal hydroxide layers and also contains anions and water molecules held between the metal hydroxide layers. The anions include at least one of an amino acid, a dipeptide, a vitamin, a pH buffer, or a glucose metabolite.

A reinforcing member includes a plate-shaped member that is made of a fiber-reinforced resin in which a continuous fiber is used as a reinforcement fiber and that has a first surface and a second surface. The plate-shaped member includes an outer circumferential portion that defines an outer edge of the plate-shaped member, a convex portion that is convex on a side of the first surface in an area inside the outer circumferential portion, and a plurality of concave portions that are concave on the side of the first surface in an area inside the convex portion.

A centrifugal pump includes a rotary shaft, a first impeller, a second impeller, a first pump chamber accommodating the first impeller, a second pump chamber accommodating the second impeller, and a central partition wall portion including an insertion hole through which the rotary shaft is disposed and dividing the first pump chamber from the second pump chamber. The first impeller includes a first shroud facing the central partition wall portion. The second impeller includes a second shroud facing the central partition wall portion. A first space communicating with the insertion hole is defined between the first impeller and the central partition wall portion. A second space communicating with the insertion hole is defined between the second impeller and the central partition wall portion. The outer diameter of the second shroud is larger than that of the first shroud.

A pump unit ( 2, 2 A) is connected to a reservoir tank (T 1 ) where liquid hydrogen and hydrogen gas generated by vaporization of the liquid hydrogen are stored and transfers the liquid hydrogen. The pump unit includes a rotation shaft ( 31 ), a motor (M) causing the shaft to rotate, an impeller ( 41 ) mounted on a front end ( 31 a ) of the shaft, a housing ( 30, 40 ) including a motor chamber ( 36 ) where the motor is accommodated and a pump chamber ( 43 ) where the impeller is accommodated, and a mechanical seal ( 42 ) mounted on the shaft and the housing and configured to seal the motor chamber with respect to the pump chamber. The motor includes a rotor ( 34 ) mounted on the shaft and a stator ( 35 ) that directly faces the rotor in a radial direction of the shaft and causes the rotor to rotate. The hydrogen gas is introduced into the motor chamber.

A nitride semiconductor light-emitting element emits ultraviolet light at a central wavelength of more than 320 nm and not more than 365 nm. The nitride semiconductor light-emitting element includes a substrate having a c-plane as a growth surface and a nitride semiconductor layer stacked on the growth surface of the substrate. The nitride semiconductor layer includes an n-type semiconductor layer, and an active layer being formed on the n-type semiconductor layer on the opposite side to the substrate and comprising a single quantum well structure with one well layer. The n-type semiconductor layer has an Al composition ratio of not more than 50% and a film thickness of more than 2 μm. A composition difference obtained by subtracting an Al composition ratio of the well layer from the Al composition ratio of the n-type semiconductor layer is not less than 22%.

A microwave device capable of increasing an amount of heat generated at the tip end thereof. The microwave device having a central conductor that transmits microwaves, an insulator covering the central conductor, and an external conductor covering the insulator. The central conductor is exposed to the outside from a tip end of a microwave irradiation part for the first time, and an externally exposed part of the exposed central conductor is bent toward the base end side of the microwave emitting unit so as to be along the external conductor.

Provided are a rotating electric machine and a pump device that include a rotor having the SPM structure suitable for high-speed rotation. The rotating electric machine ( 3 to 3 E) includes the rotor (R to RE) and a rotary shaft ( 7 ) to which rotation of the rotor is transmitted. The rotor or the rotary shaft includes a core portion ( 71 ) having a solid cylindrical outer circumferential surface. The rotor includes a plurality of magnets ( 81 to 88 ) fixed to the core portion and a resin material ( 12 ) that fixes the plurality of magnets to the core portion. Each magnet has a seamless annular shape. Each of the plurality of magnets is disposed outside the core portion in a radial direction of the core portion and is disposed along an axial direction of the core portion, and the resin material is filled into gaps between the core portion and the magnets.

A lactic acid removal device includes a culture solution for cells or microorganisms; a vessel that contains the culture solution; and a lactic acid adsorbent. The lactic acid adsorbent includes at least one of a layered double hydroxide that contains multiple metal hydroxide layers and also contains anions and water molecules held between the metal hydroxide layers, or a layered double oxide that is an oxide of a layered double hydroxide. The metal hydroxide layers contain divalent metal ions M 2+ and trivalent metal ions M 3+ , mole ratio (M 2+ /M 3+ ) of the divalent metal ions M 2+ to the trivalent metal ions M 3+ in a layered double hydroxide is 1.9 to 3.6, and the mole ratio in a layered double oxide is 1.8 to 3.6.

A blood purification device that purifies blood using dialysate, the blood purification device includes a first unit that is a main body of the device and a second unit to be attached to the first unit. The first unit includes a first group of components requiring maintenance, and an attachment space in which the first group of components is exposed. The attachment space is open to the outside of the first unit in a state that the second unit is detached from the first unit. The attachment space is closed by the second unit in a state that the second unit is attached to the first unit.