Abstract: A non-aqueous electrolyte secondary battery according to one embodiment of the present invention is provided with a positive electrode, a negative electrode, a non-aqueous electrolyte and a cladding. The cladding has a safety mechanism which operates when the internal pressure reaches a predetermined value. The positive electrode includes a positive electrode core and a positive electrode mixture layer formed on the positive electrode core. The positive electrode mixture layer includes a positive electrode active material, and 0.05-2 mass % of lithium carbonate relative to the mass of the positive electrode active material, and the lithium carbonate is present in a non-uniform concentration distribution in the thickness direction of the positive electrode mixture layer.

Abstract: The present invention provides an epoxy adhesive composition capable of reducing re-aggregation of an adhesive layer modifier, maintaining favorable viscosity for a long period of time, exhibiting high adhesiveness, and reducing process failures during application of the adhesive. Provided is an epoxy adhesive composition containing: a modified polyvinyl acetal resin having a constitutional unit with an acid-modified group; an adhesive layer modifier; and an epoxy resin, the epoxy adhesive composition having a ratio of an acid-modified group equivalent of the modified polyvinyl acetal resin to an epoxy equivalent of the epoxy resin (acid-modified group equivalent/epoxy equivalent) of 5.0 to 150.0, the epoxy adhesive composition having a number ratio of the acid-modified group to an epoxy group (acid-modified group number/epoxy group number) of 0.0005 to 0.5.

Abstract: There is provided a concentrator and a reset control method therefor that may easily and reliably secure early restoration from an outage of network communications. A concentrator to which a plurality of network devices are connectible includes a communication control part for controlling a transfer process of information among the network devices, a condition determination part for determining whether information obtained from the communication control part satisfies a reset condition, and a reset control part for controlling a reset signal used to reset the communication control part based on a determination by the condition determination part.

Abstract: There is provided a concentrator and its reset control method that may easily and reliably secure early restoration from an outage of network communications. A concentrator to which a plurality of network devices are connectible includes a communication control part for controlling a transfer process of information among the network devices, a condition determination part for determining whether information obtained from the communication control part satisfies a reset condition, and a reset control part for controlling a reset signal used to reset the communication control part based on a determination by the condition determination part.

Abstract: A single-mode optical fiber preform is produced by a process where a porous glass body of a core rod for a single-mode optical fiber is dehydrated and made into a glass to prepare a core rod for the optical fiber, clad layers are deposited on the circumference of the core rod for the optical fiber so as to give an outer diameter of a desired value, and then these are dehydrated and made into glass. At this time, the diameter of a part corresponding to the core rod for the optical fiber in the optical fiber obtained by drawing the preform for optical fiber is controlled to 1.9 times or more the mode field diameter, which is a diameter that allows light having a wavelength of 1.55 .mu.m to pass therethrough. As a result, a preform for a single-mode optical fiber with which an optical fiber little influenced by defects can be obtained can be produced.