摘要:
Provided is a lithium secondary cell having a positive pole and a negative pole separated by a separator in an electrolyte in a cell case, which has the negative pole comprising a substance which can contain lithium and/or the positive pole comprising a substance to which lithium can be inserted, thus being excellent in excessive discharge characteristics, high in energy density, and long in cycle life even in applications where a plurality of cells are connected in series or in parallel.
摘要:
In Lithium secondary cells, alkali secondary cells and bromine-zinc secondary batteries capable of retarding the growth of a dendrite, which would occur at the time of charging thereof and result in performance degradation, and having high energy densities and long cycle lives, a method for forming a material of a negative electrode of such a secondary cell or battery and a method for handling the material of the negative electrode are provided. The secondary cell or battery is provided with positive and negative electrodes separated from each other by a separator in an electrolyte contained in a case. The negative electrode is made of metallic powder alloyed with at least an amphoteric metal which reacts with both of an acid and an alkali.
摘要:
A transmission system which includes a plurality of reproduction nodes connected to each other in a cascade connection via a communication line. Each node includes a timing extraction circuit for extracting a timing signal from a signal received via the communication line, a discriminating circuit for converting the received signal into a digital signal according to the timing signal, and a processing circuit for processing, based on the timing signal, the digital signal outputted from the discriminating circuit and outputting the processed digital signal to the communication line. The timing extraction circuit includes a signal delay unit for supplying the timing signal with a signal delay time greater than a delay time occurring in the processing circuit.
摘要:
A maximum likelihood decoder for decoding a code from a signal transmitted through quadrature amplitude modulation of a code including a convolutional code can decode at high speed and high accuracy with a simple hardware configuration. In the maximum likelihood decoding of the convolutional code, the metric processing is not carried out for all of the possible paths and states but a smaller number of path(s) (metric(s)) and state(s) (metric(s)) are selected in a descending order to determine survival paths.
摘要:
The present invention aims at providing a porous molded product comprising magnesium and aluminum which is satisfactory in both of a specific surface area and mechanical properties, can be suitably used as filters, drying agents, adsorbents, purifying agents, deodorants, carriers for catalysts, etc., includes a large amount of micropores, and has a large specific surface area and a high strength, as well as a process for producing the porous molded product. The porous molded product of the present invention comprises at least magnesium and aluminum, and having a magnesium content of 10 to 50% by weight in terms of a magnesium atom, an aluminum content of 5 to 35% by weight in terms of an aluminum atom, a pore volume of 0.01 to 0.5 cm3/g, an average pore diameter of not more than 300 Å and an average collapse strength of not less than 3 kg, and can be produced by molding hydrotalcite comprising at least magnesium and aluminum and then calcining the resulting molded product at a temperature of 500 to 1500° C.
摘要:
Ferromagnetic particles including an Fe16N2 compound phase in an amount of not less than 80% as measured by Mössbauer spectrum and each having an outer shell in which FeO is present in the form of a film having a thickness of not more than 5 nm. Ferromagnetic particles may be made by subjecting iron oxide or iron oxyhydroxide having an average major axis diameter of 40 to 5000 nm and an aspect ratio (major axis diameter/minor axis diameter) of 1 to 200 as a starting material to dispersing treatment to prepare aggregated particles; subjecting the iron compound particles passed through a mesh to hydrogen reducing treatment at a temperature of 160 to 420° C.; and then subjecting the resulting particles to nitridation treatment at a temperature of 130 to 170° C.
摘要:
Each spindle system turbine blade has front and rear surfaces relative to the rotational direction. The rear surface is a recessed columnar surface with a radius of curvature R1, while the front surface is a smooth continuous surface having a projecting columnar surface with a radius of curvature R2 larger than R1 and a flat surface between which a projecting columnar surface with a radius of curvature R3 larger than R1 is arranged. Among the three surfaces, the projecting columnar surface is at an inlet side of a channel straddling the projecting columnar surface, while the flat surface is at the outlet side. A space sandwiched between a facing front surface and rear surface of adjoining turbine blades forms a gas channel. Gas ejected from a nozzle flows in from an inlet in a direction along the arc-shaped curve of the recessed columnar surface and out an outlet.
摘要:
A rechargeable lithium ion battery including a positive electrode a positive active material and including a negative electrode having a negative active material. The positive active material includes a lithium-manganese-based compound core and a heat resistant polymer disposed on the lithium-manganese-based compound core. The heat resistant polymer has a glass transition temperature (Tg) ranging from about 80 to about 400° C.Alternatively, the positive active material may include a lithium-manganese-based compound core and an inorganic metal compound as well as the heat resistant polymer with a glass transition temperature (Tg) ranging from about 80 to about 400° C. disposed on the lithium-manganese-based compound core.
摘要:
The present invention aims at providing a catalyst as a porous catalyst body for decomposing hydrocarbons which comprises at least magnesium, aluminum and nickel, wherein the catalyst has an excellent catalytic activity for decomposition and removal of hydrocarbons, an excellent anti-sulfur poisoning property, an excellent anti-coking property even under a low-steam condition, a sufficient strength capable of withstanding crushing and breakage even when coking occurs within the catalyst, and an excellent durability. The above aim of the present invention can be achieved by a porous catalyst body for decomposing hydrocarbons which comprises at least magnesium, aluminum and nickel in such a manner that the magnesium and aluminum are present in the form of a composite oxide of magnesium and aluminum, and the nickel is present in the form of metallic nickel; and which porous catalyst body has a magnesium element content of 10 to 50% by weight, an aluminum element content of 5 to 35% by weight and a nickel element content of 0.1 to 30% by weight, a pore volume of 0.01 to 0.5 cm3/g, an average pore diameter of not more than 300 Å and an average crushing strength of not less than 3 kgf.
摘要:
According to the present invention, there are provided hydrotalcite-based compound particles surface-treated with an organic compound having not less than 3 carbon atoms, have a specific surface area of 5 to 150 m2/g, wherein a conceptual value x corresponding to micropores and ultramicropores, and a conceptual value y corresponding to volumes of macropores and micropores, both calculated from a water vapor adsorption curve thereof when exposed to a temperature of 25° C. and a humidity of 50% for 250 hours, are respectively within specific ranges. The hydrotalcite-based compound particles of the present invention are capable of capturing even a very small amount of halogens contained in various resins, and exhibiting an excellent effect of preventing deterioration of the resins. Further, the hydrotalcite-based compound particles of the present invention are used in the form of particles or a molded product and are capable of exhibiting a function for capturing an anionic organic or inorganic compound from a solution to a maximum extent without being dissolved, by themselves, in the solution.