Abstract: Siloxane compounds are removed from the atmospheres by silica supporting an organic sulfonic acid compound. The silica with the organic sulfonic acid compound has a specific surface area down to 500 m2/g and up to 750 m2/g and a pore volume down to 0.8 m3/g and up to 1.2 m3/g, both measured by nitrogen gas adsorption method and has a pore diameter down to 4 nm and up to 8 nm, at the peak of differential pore volume measured by nitrogen gas adsorption method. The durability of gas sensing element against siloxanes is improved.

Abstract: A gas detector comprises a gas detection unit and a filter introducing surrounding atmosphere to the gas detection unit. The filter comprises a gas-permeable organic polymer membrane having an acidic group or a basic group.

Abstract: Provided is a power generation device that restrains interference between a plurality of flows of alternating current power if the flows of alternating current power are generated in the power generation device. The power generation device includes a housing, a first power generator held in the housing so as to be allowed to vibrate, and a second power generator held in the housing so as to be allowed to vibrate. The second power generator is electrically isolated from the first power generator.

Abstract: A power generation device includes a holder with a natural frequency of fA, and two or more vibration energy harvesting elements held by the holder and having natural frequencies different from each other. Out of the vibration energy harvesting elements, one has the lowest natural frequency fBmin satisfying the following Expression 1, and another one has the highest natural frequency fBmax satisfying the following Expression 2: fBmin?(0.925?2.5 N/100)fA??(1), and fBmax?(1.075+2.5 N/100)fA??(2), where N is the number of the vibration energy harvesting elements.

Abstract: A piezoelectric device includes a substrate, a lower electrode disposed above the substrate, a lower bonding layer disposed on the lower electrode, a piezoelectric layer containing a piezoelectric material disposed on an upper surface of the lower bonding layer, and an upper electrode disposed above the piezoelectric layer. The lower bonding layer includes an electrode material portion containing an electrode material of the lower electrode and a piezoelectric material portion containing a piezoelectric material. The electrode material portion and the piezoelectric material portion interdigitate with each other in the lower bonding layer.

Abstract: A piezoelectric device includes a substrate, a lower electrode disposed above the substrate, a lower bonding layer disposed on the lower electrode, a piezoelectric layer containing a piezoelectric material disposed on an upper surface of the lower bonding layer, and an upper electrode disposed above the piezoelectric layer. The lower bonding layer includes an electrode material portion containing an electrode material of the lower electrode and a piezoelectric material portion containing a piezoelectric material. The electrode material portion and the piezoelectric material portion interdigitate with each other in the lower bonding layer.

Abstract: The present invention provides a method for detecting polymorphism of the human cytochrome P4501A2 (CYP1A2) gene in which substitution at a 2064th base, substitution at a 2640th base, and/or deletion of a -1569th base in a nontranslational region of the human cytochrome P4501A2 gene are/is detected. According to the method of the invention, new types of polymorphism of the CYP1A2 gene can be detected simply and easily with high sensitivity and accuracy, and the method requires only a small amount of a DNA sample.