摘要:
[Problems] To provide a vapor-grown carbon fiber aggregate, wherein the carbon fiber has a structure of two or more tubular graphene layers and of which the central portion in cross section of the fiber is hollow, has a little unevenness in the structure and exhibits excellent electric conductivity.[Means for Solution] A vapor-grown carbon fiber aggregate, wherein the carbon fiber has a structure of two or more tubular graphene layers and of which the central portion in cross section of the fiber is hollow, the average outer fiber diameter of the carbon fibers is from 10 to 300 nm, and not less than 70% of the whole number of the carbon fibers have hollow diameters of from 2 to 20 nm and hollow diameter/outer fiber diameter ratios of from 1.4 to 20%.
摘要:
An object of the present invention is to provide a carbon fibrous structure having good dispersibility and small variations in electrical conductivity, etc., and being capable of improving physical properties such as electrical properties, mechanical properties and thermal properties by a small amount addition thereof without impairing properties of a matrix. The invention provides a carbon fibrous structure having a three-dimensional network shape and comprising carbon fibers having an average outside diameter of from 100 to 300 nm, wherein the carbon fibrous structure has a plurality of granular parts, and has at least partially a steric network structure of the carbon fibers in a state that a plurality of the carbon fibers sterically extend outwardly from the granular parts and that the extending carbon fibers are also bound with other granular parts, wherein the granular parts have a particle diameter larger than an outer diameter of the carbon fiber, and are formed in a growth process of growing a carbon material in the circumferential direction of catalyst particles used while growing the carbon material into a fibrous shape, by using at least two carbon compounds having different decomposition temperature as carbon sources, and wherein the carbon fibrous structure has a powder resistance of 0.02Ω·cm or less measured at a compression density of 0.8 g/cm3.
摘要:
An object of the present invention is to provide a carbon fibrous structure having good dispersibility and small variations in electrical conductivity, etc., and being capable of improving physical properties such as electrical properties, mechanical properties and thermal properties by a small amount addition thereof without impairing properties of a matrix. The invention provides a carbon fibrous structure having a three-dimensional network shape and comprising carbon fibers having an average outside diameter of from 100 to 300 nm, wherein the carbon fibrous structure has a plurality of granular parts, and has at least partially a steric network structure of the carbon fibers in a state that a plurality of the carbon fibers sterically extend outwardly from the granular parts and that the extending carbon fibers are also bound with other granular parts, wherein the granular parts have a particle diameter larger than an outer diameter of the carbon fiber, and are formed in a growth process of growing a carbon material in the circumferential direction of catalyst particles used while growing the carbon material into a fibrous shape, by using at least two carbon compounds having different decomposition temperature as carbon sources, and wherein the carbon fibrous structure has a powder resistance of 0.02Ω·cm or less measured at a compression density of 0.8 g/cm3.
摘要:
Carbon fibrous aggregator obtained by a chemical vapor phase growing method, which comprises plural granular parts, and plural carbon fibers which are mutually independently extended outwardly from their respective granular parts so that each granular part is associated with two or more of carbon fibers, wherein the carbon fibers show a three dimensional expansion in all; and which show a three dimensional network structure of the carbon fibers at least in a part by a state that at least a part of the plural carbon fibers extended from one granular part is linked with another granular part; wherein mean length of carbon fibers which link two granular parts together is of 3.0-20.0 μm, and wherein a coefficient of variation, CV, ((standard deviation/mean value)×100) which is obtained on a determination of outer diameter distribution of the carbon fibers which constitute the aggregator of carbon fiber is not more than 30%.
摘要:
An image processing apparatus includes: a subject detector that detects a predetermined subject in at least one of a first input image and a second input image between which parallax is present; and a combiner that combines a subject frame corresponding to the detected subject with each of the first and second input images stereoscopically displayed on a display section in such a way that the subject frames combined with the first and second input images also provide a depth sensation.
摘要:
A blade for wind power generation includes a lightning receptor configured to form a part of the surface of the blade, and a lightning receiving protrusion that protrudes outward from the surface of the lightning receptor. The lightning receiving protrusion is provided to a surface boundary between the blade and the lightning receptor. The surface boundary configured to protect against the lightning is positioned within a radius of a circle, which is centered on a tip of the lightning receiving protrusion and which has a radius of twice the length of the lightning receiving protrusion. A point where electric field concentration on the surface of the lightning receptor is greatest is moved from the boundary to the tip of the lightning receiving protrusion, so as to significantly reduce a possibility of blade damage associated with lightning striking the boundary when being stroke by the lightning.
摘要:
In a reciprocating device, first and second power transmission units are provided on one end side and the other end side of a track to put therebetween power receiving units which are provided on a movable body being movable along the track. Thus, when the movable body is moved close to the one end side or the other end side of the track to separate the power receiving units far from the second power transmission unit on the other end side or the first power transmission unit on the one end side, the power receiving units are able to efficiently receive the electric power from the first power transmission unit on the one end side or the second power transmission unit on the other end side which is close thereto. Therefore, it is possible to reciprocate the movable body between the both ends of the track in a simplified construction.
摘要:
A jet pump including a riser as a coolant supply tube, an inlet mixer forming a turn-around path for the coolant, a diffuser, and a jet pump beam provided with a bolt fixing device is disclosed. The bolt fixing device includes: a head bolt of a jet pump beam for pushing and supporting the inlet mixer from an upper side of the riser, the head bolt being provided with a polygonal head portion; a lock cap provided on the polygonal head portion of the head bolt; a body housing disposed on an upper surface of the jet pump beam and adapted to accommodate the lock pin; a plurality of tapered external teeth formed on an outer peripheral side surface of the lock cap; and a plurality of internal tooth-shaped grooves formed to the body housing to fix the head bolt of the jet pump beam.
摘要:
In execution of hot-plug processing consisting of a plurality of processing steps for connecting an I/O to a host, the hot-plug processing is temporarily stopped upon completion of predetermined processing steps in the hot-plug processing, and the hot-plug processing is resumed once it is detected that connection between the host and the I/O has been established and the host has been enabled to access the I/O.
摘要:
A semiconductor device includes an isolation region (11a) formed in a semiconductor substrate (10), an active region made of the semiconductor substrate (10) surrounded by the isolation region (11a) and having a trench portion, a MIS transistor of a first-conductivity type having a gate electrode (13) formed on the active region, a first sidewall (19) formed on a side surface of the gate electrode between the gate electrode (13) and the trench portion as viewed in the top, and a silicon mixed crystal layer (21) of the first-conductivity type, the trench portion being filled with the silicon mixed crystal layer (21) of the first-conductivity type, a substrate region provided between the trench portion and the isolation region (11a, 11b) and made of the semiconductor substrate (10), and an impurity region (22) of the first-conductivity type formed in the substrate region. The silicon mixed crystal layer (21) generates stress in a channel region of the active region.