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:
[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:
Disclosed are a separator for a fuel cell realizing both the high electrical conductivity and the corrosion resistance and enabling using stably for a long period of time in the fuel cell and a manufacturing method for it. The separator for a fuel cell 1 includes a substrate 2 composed of pure aluminum or aluminum alloy and a plating layer 3 formed on the substrate 2, wherein the plating layer 3 has a copper layer 3a formed in the substrate 2 side and a tin layer 3b formed on the copper layer 3a, the tin layer 3b is formed in an uppermost layer, the thickness of the copper layer 3a is 0.10 μm or above, and the value obtained by dividing the thickness of the tin layer 3b by the thickness of the copper layer 3a is 0.1-50.
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:
A driving apparatus (100) is provided with: a base part (110); a stage part (130) on which a driven object (150) is mounted and which can be displaced; an elastic part (120) which has elasticity for displacing the stage part along one direction (Y axis); and an applying part (110) for applying to the base part microvibration for displacing the stage part (130) such that the stage part (130) resonates along the one direction (Y axis) at a resonance frequency determined by the elastic part (120) and the stage part (130), the microvibration is non-directional microvibration as non-directional vibrational energy.
摘要:
A driving apparatus (100) is provided with: a base part (110); a driven part (130) capable of rotating; an elastic part (120); and an applying part (140) for applying to the base part microvibration for rotating the driven part around an axis along one direction (Y-axis) such that the driven part rotates while resonating at a resonance frequency determined by the elastic part and the driven part.
摘要:
Any packet loss is detected very quickly by means of only a series of sequence number in a multi-path environment where a transmitter and a receiver are connected to each other by way of a plurality of networks when no inversion of sequence arises in any of the networks. A communication apparatus includes a plurality of sequence buffers arranged at each network to accumulate packets until a sequence acknowledgement and an absence detecting section adapted to determine the occurrence of an absence of a packet when one or more packets are accumulated in all the sequence buffers. With this arrangement, the absence detecting section of the receiver monitors the packets staying in the sequence guaranteeing buffer arranged in each of the network, paying attention to the characteristic that packets are stored in the sequence buffers of all the networks when a packet loss takes place.
摘要:
Disclosed is anode for use in a lithium ion secondary battery. The anode includes an anode current collector and an anode active material arranged thereon, in which the anode active material contains amorphous carbon and at least one metal dispersed in the amorphous carbon, and the at least one metal is selected from: 30 to 70 atomic percent of Si; and 1 to 40 atomic percent of Sn. The anode gives a lithium ion secondary battery that has a high charge/discharge capacity and is resistant to deterioration of its anode active material even after repetitive charge/discharge cycles.
摘要:
An I/O equipment sharing system includes CPUs, a plurality of route complexes coupled to the CPUs, upstream PCI Express-bridges coupled to the route complexes, downstream PCI Express-bridges coupled to the upstream PCI Express-bridges through a network, and I/O equipment coupled to the downstream PCI Express-bridges. In the above configuration, the I/O equipment are shared between the CPUs using the identifiers of the network (for example, Ethernet VLAN IDs), the identifiers are set so that they do not overlap between the respective CPUs and necessary I/O equipment is set to a set identifier. Further, an identifier is set to a plurality of the same I/O equipment required by the respective CPUs.
摘要:
Fault tolerance is improved, a functional limitation at the time of start-up of an I/O system is avoided, and a start-up time is shortened. A downstream PCI Express bridge sets a PCI Express device connected to the downstream PCI Express bridge itself, among a plurality of single root-compatible PCI Express devices shared by a plurality of root complexes connected to a plurality of upstream PCI Express bridges that exchange data with the downstream PC Express bridge itself through a network, controls and monitors a state of a physical link with the PCI Express device connected to the downstream PCI Express bridge itself, and performs monitoring and notification of an error of the PCI Express device connected to the downstream PCI Express bridge itself.