Abstract: A photographic light is spectrally separated by a spectral prism 9 provided in an image-formation area R of the photographic light whose luminous flux is adjusted by a group of lenses 1a-1d for adjusting the luminous flux so as to image-form the photographic light. Respective lights spectrally separated by the spectral prism 9 are imaged by means of the imaging elements 2. An infrared-ray element of the photographic light whose luminous flux is being adjusted is eliminated by an infrared-ray cut filter 8. The infrared-ray cut filter 8 is advanced and retreated by a mechanism unit 14a between a position in an optica path of the photographic light and a position distant from the optical path. In the foregoing constitution, the infrared-ray cut filter 8 and the mechanism unit 14a are disposed in a luminous flux convergence area R of the photographic light whose luminous flux is being adjusted by the group of lenses 1a-1d.

Abstract: A hollow-fiber porous membrane comprising a hollow fiber-form porous membrane of vinylidene fluoride resin and having an average pore size Pm of 0.05-0.20 ?m, a maximum pore size Pmax giving a ratio Pmax/Pm of at most 2.0 between the maximum pore size Pmax and the average pore size Pm and a standard deviation of pore size distribution of at most 0.20 ?m based on a pore size distribution according to the half dry/bubble point method (ASTM•F316 and ASTM•E1294) is provided, as a hollow-fiber porous membrane of vinylidene fluoride resin having minute pores with a size (average pore diameter) and a further uniform pore size distribution suitable for water (filtration) treatment.

Abstract: A porous membrane for water treatment of the present invention is made of a resin composition containing 100 parts by weight of a polyvinylidene fluoride based resin, and 5 to 13 parts by weight of a polyvinyl alcohol based polymer having a degree of saponification of 10 to 80 mol %. The porous membrane has a permeation wetting tension of 38 to 72 mN/m, and a tensile strength of 7 to 20 MPa, and thus is characterized by having the excellent mechanical strength and wettability. This is a porous membrane for water treatment essentially containing the polyvinylidene fluoride based resin, which allows water treatment to be highly efficiently performed on raw water (river water, industrial waste water, and the like), in particular.

Abstract: A composition is formed by blending a vinylidene fluoride resin having a relatively high molecular weight and an improved crystallinity represented by a difference Tm2?Tc of at most 32° C. between an inherent melting point Tm2 and a crystallization temperature Tc of the resin with a plasticizer and a good solvent for vinylidene fluoride resin, and the composition is melt-extruded into a hollow fiber-form. The hollow fiber-form extrudate is then cooled to be solidified from an outside thereof by introduction into cooling medium and subjected to extraction of the plasticizer and stretching, thereby forming a hollow fiber porous membrane of vinylidene fluoride resin characterized by co-presence of crystal oriented portion and crystal non-oriented portion recognizable by X-ray diffraction method.

Abstract: A hollow fiber-form porous membrane of vinylidene fluoride resin having a high crystallinity as represented by a crystal melting enthalpy of at least 58 J/g is produced by forming a composition of a vinylidene fluoride resin having a relatively high weight-average molecular weight of at least 3×105 blended with a plasticizer and a good solvent for vinylidene fluoride resin, melt-extruding the composition into a hollow fiber-form film, and solidifying the film by cooling it from an outside thereof by contact with a cooling liquid inert to vinylidene fluoride resin while crystallizing the vinylidene fluoride resin at an appropriately moderate speed. The resultant hollow fiber-form porous membrane is excellent in mechanical strength represented by tensile strength and elongation at break, and also excellent in chemical resistance, thus being effectively used as a water micro-filtration membrane.

Abstract: An IPv4-IPv6 multicast address translation table is dynamically created, so that it is unnecessary to register multicast servers in advance. When an IPv4 MC group address exists as a response of a DNS server to a DNS request of an IPv6 MC client or when an IPv6 MC group address exists as a response of the DNS server to a DNS request of the IPv4 MC client H1 to H4, DNS Proxy D3 requests an MC adaptive translator T1 to generate a virtual IPv6 MC group address or a virtual IPv4 MC group address, and the MC adaptive translator T1 generates a virtual IPv6 MC group address or a virtual IPv4 MC group address from an address pool, and also creates an MC address translation table, whereby the MC address translation of IPv4-IPv6 can be dynamically performed.

Abstract: There is provided a porous hollow fiber of vinylidene fluoride resin which has a water permeation rate that is large per fiber and little dependent on the length, has a large treatment capacity per volume of a filtering module, and is therefore suitable as a microfilter element. That is, a porous hollow fiber, comprising a vinylidene fluoride resin having a weight-average molecular weight of at least 3×105, having a water permeation rate F (m3/m2·day) measured at a pressure difference of 100 kPa and at a water temperature of 25° C. in a range of test length L=0.2-0.8(m) and expressed in a linear relationship with the test length L of: F=C·L+F0 (formula 1) and satisfying requirements (a)-(d) shown below: (a) a average slope C (/day) of: ?20?C?0, (b) an intercept (basic permeability) F0 (m3/m2·day) of: F0?30, (c) a relation between F0 (m3/m2·day) and an average pore diameter P (?m) according to half-dry method of F0/P?300, and (d) an outer diameter of at most 3 mm.

Abstract: Monofilaments comprising resin compositions which contain 1% by mass or more of a comonomer component (for example, hexafluoropropylene), have an intrinsic viscosity of 1.3 dl/g or more and a melting point of 165° C. or higher and contain a PVDF-based resin. Owing to the above composition and physical properties, the crystallinity and elastic modulus of the PVDF-based resin are altered. As a result, an appropriate flexibility can be imparted to the monofilaments while preventing deterioration in the mechanical properties.

Abstract: A monofilament obtained by smelt-spinning and stretching of a vinylidene fluoride resin is subjected to a high-temperature relaxation treatment for an extremely short period of 0.05-0.5 sec. within a high-temperature heating oil bath at a temperature of 140-175° C., thereby producing a vinylidene fluoride resin monofilament, which comprises a vinylidene fluoride resin having an inherent viscosity of at least 1.40 dl/g, and has a knot strength (JIS L1013) of at least 600 MPa and excellent anti-twist property represented by a twist index of at least 0.90 when measured after the monofilament being subjected to application for 1 minute of a tensile load equal to approximately 50% of a maximum tensile load (JIS K7113), removal of the load, and standing for 3 hours.

Abstract: In a network for forwarding user packets by a tunneling protocol, an egress edge node to which tunnels concentrate from a plurality of ingress edge nodes allocates a bandwidth to each of sessions multiplexed through each of the tunnels and notifies each of the ingress edge nodes of the allocated bandwidth, and the ingress node notifies private routers or terminal devices of the allocated bandwidth.

Abstract: Monofilaments comprising resin compositions which contain 1% by mass or more of a comonomer component (for example, hexafluoropropylene), have an intrinsic viscosity of 1.3 dl/g or more and a melting point of 165° C. or higher and contain a PVDF-based resin. Owing to the above composition and physical properties, the crystallinity and elastic modulus of the PVDF-based resin are altered. As a result, an appropriate flexibility can be imparted to the monofilaments while preventing deterioration in the mechanical properties.

Abstract: A user terminal connection control method to limit the number of sessions simultaneously connectable to the Internet, wherein an access server or authentication server has a user management table for specifying the maximum number of connections and a preferential terminal identifier indicating a user terminal to be preferentially connected to the Internet for each group comprising a plurality of user identifiers. The access server or authentication server determines, during a communication procedure for authenticating a user who requests to access to the Internet, whether the current number of connections for a group to which the user belongs has reached the maximum number of connections, and if so, determines whether to allow the user terminal to connect to the Internet depending on whether the user terminal identifier matches the preferential terminal identifier.

Abstract: In a packet transmission router used in a VRRP (Virtual Router Redundancy Protocol) network having a VR (Virtual Router) function, when virtual routers VR are realized by the VRRP, the routing control information that each VR manages is prevented from being mixed with that of other VR. When an active packet transmission router transmits a VRRP packet to a standby packet transmission router, an identifier indicating which virtual router belongs to the VRRP packet is added to the VRRP packet before the transmission of the VRRP packet.

Abstract: A photographic light is spectrally separated by a spectral prism 9 provided in an image-formation area R of the photographic light whose luminous flux is adjusted by a group of lenses 1a-1d for adjusting the luminous flux so as to image-form the photographic light. Respective lights spectrally separated by the spectral prism 9 are imaged by means of the imaging elements 2. An infrared-ray element of the photographic light whose luminous flux is being adjusted is eliminated by an infrared-ray cut filter 8. The infrared-ray cut filter 8 is advanced and retreated by a mechanism unit 14a between a position in an optical path of the photographic light and a position distant from the optical path. In the foregoing constitution, the infrared-ray cut filter 8 and the mechanism unit 14a are disposed in a luminous flux convergence area R of the photographic light whose luminous flux is being adjusted by the group of lenses 1a-1d.

Abstract: Monofilaments comprising resin compositions which contain 1% by mass or more of a comonomer component (for example, hexafluoropropylene), have an intrinsic viscosity of 1.3 dl/g or more and a melting point of 165° C. or higher and contain a PVDF-based resin. Owing to the above composition and physical properties, the crystallinity and elastic modulus of the PVDF-based resin are altered. As a result, an appropriate flexibility can be imparted to the monofilaments while preventing deterioration in the mechanical properties.

Abstract: A high-strength polyesteramide fiber comprising a polyesteramide copolymer is characterized by having a primary peak temperature that is at least 10° C. higher than that of a non-oriented material comprising the polyesteramide copolymer, as measured by dynamic viscoelastometry. A high-strength polyesteramide fiber production process is characterized by comprising a series of steps of melt spinning the polyesteramide copolymer, immediately followed by solidification by cooling in an inert cooling medium having a temperature of 20° C. or lower, thereby obtaining an undrawn filament; enhancing the crystallinity of the undrawn filament to 10 to 30% by weight; and subjecting the undrawn filament having a crystallinity of 10 to 30% by weight to a single- or multi-stage drawing in such a way as to give a total draw ratio of 4.5 times or greater.

Abstract: A method of manufacturing the front surface shape of plural magnetic heads precisely in batch in a desired dimension After fixing plural magnetic heads 1, 2 and preliminarily processing curved surfaces along the sliding direction S on a rotary member 4, the curved surfaces Ts along the thickness direction T orthogonal to the sliding direction S of the magnetic heads 1, 2 are formed in batch by finish polishing process by means of abrasive tape or the like.

Abstract: A movable filter device comprises a rotary plate for holding an optical filter, a holding plate for holding the rotary plate rotatably at a pivot point, stopper pins, and a torsion coil spring. The torsion coil spring has one end coupled to the holding plate and the other end coupled to the rotary plate, and generates a force for extending both ends thereof. The force generated by the torsion coil spring prevents the rotary plate from stopping at positions other than those defined by the stopper pins. The rotary plate has slender portions of low rigidity for absorbing the impact of collision between the rotary plate and stopper pins.

Abstract: The disclosure describes dielectrics for a transfer sheet carrying member used in electrophotographic image forming apparatus, comprising 80 to 96 mass % of a vinylidene fluoride-based resin and 4 to 20 mass % of a methyl methacrylate-based resin.

Abstract: A sheet metal made from a ferritic stainless steel alloy which has an improved corrosion resistivity and is suitable for use in manufacturing exterior building material, in particular, roofing material, by means of forming process such as roll-forming, without formation of pocket wave. The steel alloy comprises 10-32 wt % of Cr and 0.005-0.1 wt %, in total, of C and N, the balance being Fe and unavoidable impurities. The sheet metal has been processed to present a mechanical property that, when tested in a tensile test conducted for a test piece sampled in the widthwise direction of cold-rolling and measured at the elastic limit reached in the test, a strain ratio is equal to or greater than 2.5.The method of making the sheet metal comprises the steps of: cold rolling a steel slab into a sheet metal, subjecting the thus obtained sheet metal to final annealing, subjecting the sheet metal to skin-pass rolling, and, subjecting the resulting sheet metal to aging process at a temperature of 200.degree.-550.degree.