Abstract: A polyolefin microporous membrane having a film thickness of 1 ?m to 30 ?m; an air permeability of 500 sec/100 cm3 or less; and a withstand voltage reduction rate of 1.0% or greater and 17.0% or less due to pressing under conditions of a temperature of 60° C., a pressure of 3.4 MPa, and a compression time of 1 sec or a withstand voltage reduction rate of 1.0% or greater and 28.0% or less due to pressing under conditions of a temperature of 70° C., a pressure of 8 MPa, and a compression time of 3 min, or having a polyethylene crystal long period before compression of 35.0 nm or more, measured by a small-angle X-ray scattering (SAXS) method, and a diffraction peak-to-peak distance of 2.410° or more and 2.600° or less derived from a (110) plane and a (200) plane of a polyethylene crystal before compression is provided.

Abstract: An air purification device includes a reactor having a hollow shape and extending in one direction, a discharge plasma generator comprising a first electrode disposed on an outer wall of the reactor and a second electrode disposed inside the reactor, where the discharge plasma generator is configured to generate a discharge plasma in a discharge region, a plurality of dielectric particles disposed on a packed-bed of the reactor, a liquid supplier which supplies a liquid into the reactor, and a liquid recoverer which recovers the liquid discharged from the reactor.

Abstract: An air purification device includes a reactor having a hollow shape and extending in one direction, a discharge plasma generator comprising a first electrode disposed on an outer wall of the reactor and a second electrode disposed inside the reactor, where the discharge plasma generator is configured to generate a discharge plasma in a discharge region, a plurality of dielectric particles disposed on a packed-bed of the reactor, a liquid supplier which supplies a liquid into the reactor, and a liquid recoverer which recovers the liquid discharged from the reactor.

Abstract: An oscillator includes a vibrator element, a container in which the vibrator element is housed, at least one of a heating element and a cooling body configured to control the temperature on the inside of the container, an oscillation circuit electrically connected to the vibrator element, a D/A conversion circuit configured to control a frequency output by the oscillation circuit, and a reference-voltage generation circuit configured to supply a voltage to the D/A conversion circuit. The reference-voltage generation circuit is mounted on the inside of the container or on a substrate on which the container is mounted.

Abstract: An oscillator includes a resonator; an oscillation circuit which oscillates the resonator; a D/A conversion circuit which receives digital data for controlling a frequency of the oscillation circuit; a first temperature sensor; and a temperature compensation circuit which is connected to the first temperature sensor. The oscillation circuit includes a first variable capacitor element and a second variable capacitor element. An output voltage of the D/A conversion circuit is applied to the first variable capacitor element. An output voltage of the temperature compensation circuit is applied to the second variable capacitor element.

Abstract: An oscillator includes a vibrator element, a container in which the vibrator element is housed, at least one of a heating element and a cooling body configured to control the temperature on the inside of the container, an oscillation circuit electrically connected to the vibrator element, a D/A conversion circuit configured to control a frequency output by the oscillation circuit, and a reference-voltage generation circuit configured to supply a voltage to the D/A conversion circuit. The reference-voltage generation circuit is mounted on the inside of the container or on a substrate on which the container is mounted.

Abstract: An oscillator includes a resonator; an oscillation circuit which oscillates the resonator; a D/A conversion circuit which receives digital data for controlling a frequency of the oscillation circuit; a first temperature sensor; and a temperature compensation circuit which is connected to the first temperature sensor. The oscillation circuit includes a first variable capacitor element and a second variable capacitor element. An output voltage of the D/A conversion circuit is applied to the first variable capacitor element. An output voltage of the temperature compensation circuit is applied to the second variable capacitor element.

Abstract: Disclosed are a method and an apparatus for processing an exhaust gas, which enable to suppress decrease of pH and increase of ORP of a mixture of an aqueous solution of a reducing agent and an aqueous alkali solution circulated within a wet reactor comprising a reduction reaction region and an oxidation reaction region. The method and apparatus enable to prevent deterioration of the mixed aqueous solution, and can be continuously operated for a long time. Specifically, the ORP and pH of the mixed aqueous solution of the aqueous solution of a reducing agent and the aqueous alkali solution to be circulated within the wet reactor are measured, and a fresh aqueous solution of a reducing agent and a fresh aqueous alkali solution are supplied, if necessary, into a reservoir unit arranged in the lower part of the wet reactor so that the ORP and pH of the mixed aqueous solution are kept within predetermined ranges.

Abstract: An exhaust gas treating apparatus includes an adsorption tower (20) that has an adsorption layer filled with an adsorbent and a heat transfer path through which heat is transferred to the adsorption layer. The apparatus performs switching among the following processes: an adsorption process of introducing an exhaust gas from an engine (10) into the adsorption layer of the adsorption tower so that target components to be treated, including NOX, in the exhaust gas are adsorbed by the adsorbent; a desorption process of introducing the exhaust gas into the heat transfer path of the adsorption tower to heat the adsorption layer and introducing a desorption gas into the heated adsorption layer so that the target components are desorbed from the adsorbent, and a cooling process of introducing a cooling gas into the adsorption layer of the adsorption tower to cool the adsorption layer and introducing the cooling gas that has passed through the adsorption layer into an inlet of the engine.

Abstract: An exhaust gas treating apparatus includes an adsorption tower (20) that has an adsorption layer filled with an adsorbent and a heat transfer path through which heat is transferred to the adsorption layer. The apparatus performs switching among the following processes: an adsorption process of introducing an exhaust gas from an engine (10) into the adsorption layer of the adsorption tower so that target components to be treated, including NOX, in the exhaust gas are adsorbed by the adsorbent; a desorption process of introducing the exhaust gas into the heat transfer path of the adsorption tower to heat the adsorption layer and introducing a desorption gas into the heated adsorption layer so that the target components are desorbed from the adsorbent, and a cooling process of introducing a cooling gas into the adsorption layer of the adsorption tower to cool the adsorption layer and introducing the cooling gas that has passed through the adsorption layer into an inlet of the engine.

Abstract: A piezoelectric resonator storage case, includes a piezoelectric resonator stored therein, and a resonator container for storing a metal case. Here, the piezoelectric resonator includes: a piezoelectric resonator body having the metal case and a piezoelectric resonator element which is sealed in the metal case in an air tight manner; and two lead terminals protruding from a bottom of the piezoelectric resonator body.

Abstract: Disclosed are a method and an apparatus for processing an exhaust gas, which enable to suppress decrease of pH and increase of ORP of a mixture of an aqueous solution of a reducing agent and an aqueous alkali solution circulated within a wet reactor comprising a reduction reaction region and an oxidation reaction region. The method and apparatus enable to prevent deterioration of the mixed aqueous solution, and can be continuously operated for a long time. Specifically, the ORP and pH of the mixed aqueous solution of the aqueous solution of a reducing agent and the aqueous alkali solution to be circulated within the wet reactor are measured, and a fresh aqueous solution of a reducing agent and a fresh aqueous alkali solution are supplied, if necessary, into a reservoir unit arranged in the lower part of the wet reactor so that the ORP and pH of the mixed aqueous solution are kept within predetermined ranges.

Abstract: A method for treating exhaust gas includes: adsorbing target components in the exhaust gas with an adsorbent (5); introducing a nitrogen gas with an oxygen concentration of 10 vol % or less and a purity of 90 vol % or more into the adsorbent (5); and applying (6, 7, 8) nonthermal plasma to the adsorbent (5). After the adsorbent (5) adsorbs the target components in the exhaust gas, the nitrogen gas is introduced into the adsorbent (5), and then an electric discharge is generated so that the nonthermal plasma of the nitrogen gas is applied to the adsorbent (5) and causes desorption of the target components and regeneration of the adsorbent (5). This method can remove the target components effectively from oxygen-containing exhaust gas by using nitrogen gas plasma with high activity as a result of ionization of a nitrogen gas and combining adsorption, desorption by the nitrogen gas plasma, and nitrogen plasma treatment.

Abstract: The present invention is characterized in that a casing 2 connected to an exhaust system 8, a honeycomb filter 3 placed in the inside of the casing 2, the honeycomb filter having a plurality of cells partitioned by partition walls, and plasma generation electrodes 6 placed being faced each other by sandwiching the honeycomb filter there are included, particulate matter contained in an exhaust gas is collected by the honeycomb filter 3, nitrogen monoxide contained in the exhaust gas is oxidized to nitrogen dioxide by nonthermal plasma generated between a pulse electrode 4 and an earth electrode 5 constituting the plasma generation electrodes 6, combustible materials in the particulate matter collected and deposited on the surface of the partition walls are removed through oxidation by the nitrogen dioxide produced. As a result, the honeycomb filter 3 can be regenerated.

Abstract: A piezoelectric resonator storage case, includes a piezoelectric resonator stored therein, and a resonator container for storing a metal case. Here, the piezoelectric resonator includes: a piezoelectric resonator body having the metal case and a piezoelectric resonator element which is sealed in the metal case in an air tight manner; and two lead terminals protruding from a bottom of the piezoelectric resonator body.

Abstract: A method for treating exhaust gas includes: adsorbing target components in the exhaust gas with an adsorbent (5); introducing a nitrogen gas with an oxygen concentration of 10 vol % or less and a purity of 90 vol % or more into the adsorbent (5); and applying (6, 7, 8) nonthermal plasma to the adsorbent (5). After the adsorbent (5) adsorbs the target components in the exhaust gas, the nitrogen gas is introduced into the adsorbent (5), and then an electric discharge is generated so that the nonthermal plasma of the nitrogen gas is applied to the adsorbent (5) and causes desorption of the target components and regeneration of the adsorbent (5). This method can remove the target components effectively from oxygen-containing exhaust gas by using nitrogen gas plasma with high activity as a result of ionization of a nitrogen gas and combining adsorption, desorption by the nitrogen gas plasma, and nitrogen plasma treatment.

Abstract: The present invention is characterized in that a casing 2 connected to an exhaust system 8, a honeycomb filter 3 placed in the inside of the casing 2, the honeycomb filter having a plurality of cells partitioned by partition walls, and plasma generation electrodes 6 placed being faced each other by sandwiching the honeycomb filter there are included, particulate matter contained in an exhaust gas is collected by the honeycomb filter 3, nitrogen monoxide contained in the exhaust gas is oxidized to nitrogen dioxide by nonthermal plasma generated between a pulse electrode 4 and an earth electrode 5 constituting the plasma generation electrodes 6, combustible materials in the particulate matter collected and deposited on the surface of the partition walls are removed through oxidation by the nitrogen dioxide produced. As a result, the honeycomb filter 3 can be regenerated.