35results about How to "Increase in resistance" patented technology

A Group III nitride semiconductor light-emitting device includes at least an n-type-layer-side cladding layer, a light-emitting layer, and a p-type-layer-side cladding layer, each of the layers being formed of a Group III nitride semiconductor. The n-type-layer-side cladding layer is a superlattice layer having a periodic structure including an InyGa1-yN (0<y<1) layer, an AlxGa1-xN (0<x<1) layer, and a GaN layer. The n-type-layer-side cladding layer has a four-layer periodic structure including a second GaN layer interposed between the InyGa1-yN (0<y<1) layer and the AlxGa1-xN (0<x<1) layer.

Provided is an air heat exchanger capable of preventing an increase in ventilation resistance and a decrease in heat exchange efficiency due to condensation water generated on surfaces of heat transfer fins, without increasing thermal resistance of flat tubes and the heat transfer fins, and preventing scattering of water droplets downwind from the heat transfer fins. In the air heat exchanger including a plurality of flat tubes 2 and heat transfer fins 5 provided between the flat tubes 2 and on which air is blown, the flat tubes 2 include water draining grooves 4 on side surfaces on which the heat transfer fins 5 are provided and the heat transfer fins 5 include water guiding grooves 6 communicating with the water draining grooves 4. At least a groove wall 40 on the upwind side of an air blowing direction 10 among groove walls forming the water guiding grooves 6 is provided from a position of the upwind side from the water draining grooves 4 to the water draining grooves 4. The water guiding grooves 6 extend toward the water draining grooves 4 along the groove wall 40 on the upwind side and an area of a cross section perpendicular to an extension direction decreases toward the water draining grooves 4.

A mix door includes a slide door unit, a slide driving part configured to drive the slide door unit, and a gear cover partially covering the slide driving part. The slide driving part includes a gear mechanism portion formed of a rack portion and a gear portion. The gear cover is provided to cover the gear portion.

A positive electrode active material for a nonaqueous electrolyte secondary battery includes a positive electrode active material particle and a compound containing a rare earth element and a carbonate, the compound having a particle size of 1 to 100 nm and being adhered to a surface of the positive electrode active material particle. The ratio of the compound relative to the positive electrode active material particle is 0.005% to 0.4% by mass on a rare earth element basis. The positive electrode active material particle is composed of a lithium transition metal oxide having a layered structure.

The present invention aims to provide an electrolyte solution that is less likely to lead to an increase in resistance and realizes high capacity retention factor even after continuous application of a high voltage, and to provide an electrochemical device. The present invention provides an electrolyte solution including: a nitrile compound; and a quaternary ammonium salt, the electrolyte solution having a potassium ion content of less than 10 ppm, a moisture content of 20 ppm or less, a tertiary amine content of 30 ppm or less, a heterocyclic compound content of 30 ppm or less, and an ammonia content of 20 ppm or less.

A front structure of a saddle ride type vehicle includes a headlight unit, and a front cowl. The headlight unit includes at least one lens portion. The front cowl includes an annular cowl configured to surround the lens portions, an upper cowl configured to cover at least an upper portion of the annular cowl from the front side, and a wind screen. The edge portion of the upper cowl includes a portion that forms a slit-shaped opening. The annular cowl includes a light-shielding wall extending backward from a rear portion of the upper cowl between the opening and the wind screen.

A mix door includes a slide door unit, a slide driving part configured to drive the slide door unit, and a gear cover partially covering the slide driving part. The slide driving part includes a gear mechanism portion formed of a rack portion and a gear portion. The gear cover is provided to cover the gear portion.