Abstract: A heat exchanger core includes: a plurality of internal passages; and a header passage communicating with the plurality of internal passages. An inner wall of the header passage has greater surface roughness than passage walls of the plurality of internal passages.

Abstract: This atomic resonator for causing a resonance frequency by CPT resonance includes: a gas cell having alkali metal atoms enclosed; a photodetector configured to detect light having passed through the gas cell and convert the light to an electric signal; a high-frequency oscillator configured to receive the electric signal and output the signal after a frequency thereof is divided by two; and a laser light source configured to modulate and introduce, into the gas cell, light based on the signal output from the high-frequency oscillator. The high-frequency oscillator has an injection-locked frequency divider circuit including an acoustic resonator as an oscillation element.

Abstract: Provided is a water repellent oil repellent agent composition capable of producing an article having excellent oil repellency. A water repellent oil repellent agent composition containing a fluorine-containing polymer comprising a unit based on a monomer (a) shown below and a unit based on a monomer (b) shown below. Monomer (a): a compound represented by CH2?CH—[CH2CH2]p—[CF2CF2]q—[OCF2CF(CF3)]r—O—C3F7 In the formula, p represents an integer of 0 to 4, q represents an integer of 1 to 4, and r represents an integer of 1 to 4. Monomer (b): another monomer that is copolymerizable with the monomer (a).

Abstract: A heat exchanger includes a pipe main body forming a flow path to which a first fluid is supplied, a pair of partition plates defining a closed space, a plurality of heat transfer tubes, a supply portion configured to supply a second fluid into the closed space, a discharge portion configured to discharge the second fluid in the closed space, and a flow path forming portion forming a plurality of small flow path portions between the heat transfer tubes adjacent to each other. The second fluid flows between the plurality of heat transfer tubes in the closed space in a direction opposite to the flow direction of the first fluid. The plurality of small flow path portions are disposed at positions different from each other when viewed from a position where the discharge portion is disposed in an extension direction.

Abstract: An object of the present invention is to provide a high-density Cr—Si—C-based sintered body including chromium (Cr), silicon (Si) and carbon (C) and is furthermore to provide at least one of the high-density Cr—Si—C-based sintered body, a sputtering target including the sintered body or a method for producing a film using the sputtering target. The present invention can provide a Cr—Si—C-based sintered body including chromium (Cr), silicon (Si) and carbon (C), wherein the sintered body has a relative density of 90% or more and a porosity of 13% or less.

Abstract: An object is to provide an optical communication system and an optical communication method that are capable of, when assigning wavelengths on a per-service basis and providing services on a per-area basis, preventing degradation of signal quality due to linear crosstalk and preventing an increase in cost and size. An optical communication system according to the present invention includes an optical splitter 300 connecting N first ports and M second ports by a combination of 2×2 fiber optical splitters, N and M each being an integer of two or more, where wavelengths of optical signals to be received are limited for each group of optical receivers 106, by using a correlation between a fused extension length of at least one 2×2 fiber optical splitter directly connected to the first port, among the 2×2 fiber optical splitters, and wavelength output characteristics of the second port of the optical splitter 300.

Abstract: A metal-Si based powder contains a metal-Si based particle including a plurality of crystal phase grains. The crystal phase grains include a crystal phase containing a compound of a metal and Si. The crystal phase grains have an average grain size of, for example, 20 ?m or less. The metal-Si based particle has an average particle size of, for example, 5 to 100 ?m.

Abstract: Provided is an yttrium ingot from which an yttrium sputtering target that produces a reduced number of particles can be obtained, and an yttrium sputtering target that has high plasma resistance and a low resistance that enables realization of a high film deposition rate can be obtained. An yttrium ingot, wherein the yttrium ingot has a fluorine atom content of less than or equal to 10 wt %; in an instance where the yttrium ingot constitutes a target, a sputtering surface of the target has a surface roughness of 10 nm or greater and 2 ?m or less; in the yttrium ingot, the number of pores having a diameter of greater than or equal to 100 ?m is fewer than or equal to 0.1/cm2; and the yttrium ingot has a relative density of greater than or equal to 96%.

Abstract: An object is to provide an optical communication system capable of controlling the output ratio by port and by wavelength for incident light of different wavelengths, a method of determining the split ratio of an uneven-split optical splitter for controlling the output ratio by port and by wavelength, and a transmission range determination method for the optical communication system. The split ratio determination method for an uneven-split optical splitter according to the present invention uses the melt-draw distance to adjust the split ratio of each fiber-optic splitter included in the uneven-split optical splitter such that the light output from the farthest ONUs among each of the ports connected under the ports B to M of the uneven-split optical splitter arrives with the minimum reception sensitivity at OLT receivers in a PON system.

Abstract: Provided is a water- and oil-repellent agent composition that is capable of producing an article having a high water pressure resistance and a low water absorption rate. The water- and oil-repellent agent composition contains a fluorine-containing polymer having a unit based on a monomer (a), a unit based on a monomer (b1), a unit based on a monomer (b2), a unit based on a monomer (b3), and a unit based on a monomer (c), wherein relative to all the units that constitute the fluorine-containing polymer, the proportion of the unit based on the monomer (a) is from 70 to 80% by mass, the proportion of the combination of the unit based on the monomer (b1), the unit based on the monomer (b2) and the unit based on the monomer (b3) is from 12 to 28% by mass, and the proportion of the unit based on the monomer (c) is from 2 to 8% by mass. Monomer (a): a compound represented by (Z-Q)nX. Monomer (b1): a monomer not having a polyfluoroalkyl group (Rf group), but having an alkyl group of 22 carbon atoms.

Abstract: A Cr—Si sintered body contains Cr and Si. The Cr—Si sintered body contains a crystalline CrSi2 phase and a crystalline Si phase. A content of the Si phase in the Cr—Si sintered body is 40% by mass or more. A relative density of the Cr—Si sintered body relative to a true density of the Cr—Si sintered body is 95% or more. The CrSi2 phase has an average crystal grain size of 40 ?m or less, and the Si phase has an average crystal grain size of 30 ?m or less. A total content of impurities in the Cr—Si sintered body is 200 ppm by mass or less, and the impurities are composed of at least one element selected from the group consisting of Mn, Fe, Mg, Ca, Sr, and Ba.

Abstract: A method for producing a water/oil repellent composition can produce an article which is excellent in the oil repellency while maintaining the water repellency and the heavy-rain durability. The method includes mixing an emulsion of a polymer having from 10 to 50 mass % of units based on a monomer having a perfluoroalkyl group per all units and an emulsion of a monomer component containing at least 80 mass % of a monomer having a perfluoroalkyl group so that the proportion of the mass of the polymer will be from 50 to 99 mass % per the sum of the mass of the polymer and the total mass of the monomer component and then polymerizing the monomer component. The monomer component includes emulsified particles in the emulsion of the monomer component. The emulsified particles have an average particle size of from 50 to 600 nm.

Abstract: A water- and oil-proofing composition which can provide an article with high utility oil resistance is provided. A water- and oil-proofing composition comprising a fluorinated polymer comprising units based on the following monomer (a) and units based on the following monomer (b), a fatty acid ester of polyglycerin and an aqueous medium: Monomer (a): a compound represented by CH2?CH—Rf (wherein Rf is a C1-8 perfluoroalkyl group). Monomer (b): a monomer copolymerizable with the monomer (a).

Abstract: To provide a water/oil repellent article which presents little burden on the environment, while being excellent in water/oil repellency, washing durability of the water repellency and friction durability of the water repellency; a method for producing such a water/oil repellent article; and a water/oil repellent composition and a water/oil repellent kit to be used for producing such a water/oil repellent article.

Abstract: Provided is, for example, an exhaust gas-purifying three-way catalyst which is suppressed in particle growth due to sintering of a catalytically active component on a carrier in exposure to a high temperature and thus is enhanced in purification performance, and a method for producing the same, as well as an integral structure type exhaust gas-purifying catalyst using the same. The exhaust gas-purifying three-way catalyst of the present invention includes a composite particle which contains a base material particle having a pore size of 100 to 650 nm as measured by a mercury intrusion method and a catalytically active particle of a platinum group element supported on the base material particle, in which a content proportion of the catalytically active particle is 0.001 to 30% by mass in total in terms of metal of the platinum group element, based on a total amount of the composite particle.

Abstract: Provided is a semiconductor storage device including: a substrate having a substrate surface extending in a first direction and a second direction intersecting the first direction; a plurality of first region memory cells provided in a plurality of layers provided parallel to the substrate surface and in a third direction, the first region memory cells being provided above a rectangular shaped first region provided on the substrate surface, the first region having a first side parallel to the first direction and a second side parallel to the second direction when viewed from the third direction intersecting the first direction and the second direction; a plurality of first region wirings provided between the first region memory cells; a plurality of second region memory cells provided in the layers, the second region memory cells being provided above a rectangular shaped second region having a third side parallel to the first direction and a fourth side parallel to the second direction when viewed from the th

Abstract: To provide a fluorinated copolymer dispersion, whereby it is possible to obtain an article being excellent in water-and-oil repellency and less susceptible to a decrease in the water-and-oil repellency by alkali, etc. and which presents little impact to the environment by an organic solvent; a method for its production; and an article which is excellent in water-and-oil repellency and is less susceptible to a decrease in the water-and-oil repellency by alkali, etc.

Abstract: A semiconductor storage device includes lower and upper bit lines, word lines between the bit lines, and memory cells between the bit lines and the word lines. The memory cells are divided into logical slices and a memory cell from each logical slice is selected when carrying out a read or write operation. A first logical slice includes memory cells, each of which is between one of two bit lines and one of three word lines that are adjacent to each other. The two bit lines include one lower bit line and one upper bit line. A second logical slice includes memory cells, each of which is between one of three bit lines and one of three word lines that are not adjacent to each other. The three bit lines include one lower bit line and two upper bit lines.

Abstract: A water- and oil-proofing composition stable under highly alkaline conditions is provided. A water- and oil-proofing composition comprising a fluorinated polymer and an aqueous medium, wherein the fluorinated polymer comprises units based on a monomer a and units based on a monomer b. Monomer a: a compound represented by CH2?CH—Rf (wherein Rf is a C1-8 perfluoroalkyl group). Monomer b: a compound having a polymerizable unsaturated group and a cationic group.

Abstract: A liquid repellent composition which can provide an article with good alcohol repellency is provided. A liquid repellent composition comprising a fluorinated polymer and an aqueous medium, wherein the fluorinated polymer comprises units based on a monomer a, units based on a monomer b and units based on a monomer c. Monomer a: a compound represented by CH2?CH—Rf (wherein Rf is a C1-8 perfluoroalkyl group). Monomer b: a fluorine-free nonionic surfactant having a polymerizable carbon-carbon double bond. Monomer c: another monomer copolymerizable with the monomer a and the monomer b.