摘要:
A membrane for microfiltration, ultrafiltration or dialysis comprises a methyl methacrylate copolymer containing about 0.5 to 10 mol % of a monomer having sulfonate groups, and a methyl methacrylate copolymer containing about 0.5 to 10 mol % of a monomer having quaternary nitrogen-containing groups. It is manufactured by mixing those copolymers, dissolving the mixture in a solvent such as dimethylsulfoxide or dimethylformamide, and forming a membrane from a solution of the copolymers by casting or spinning. The membrane is particularly suitable for use in the purification of blood, and its most preferable form is hollow fibers. A method of preparing hollow fibers comprises extruding the copolymer solution through a spinneret having an annular orifice defined by a thin central tube while a liquid or gas is being injected into the central tube, and coagulating the extrusion product.
摘要:
A sheet conveying apparatus for conveying a rectangular sheet includes conveying device for conveying the sheet while contacting a bottom surface of the sheet on a conveyance surface and a pair of elastic members disposed on two sides of the conveying device, the elastic members guiding the sheet while contacting respective side edge of the sheet when the sheet is conveyed by the conveying device so that a center line of the sheet coincides with a center line for conveyance.
摘要:
Halogen-containing resins, particularly polyvinyl chloride, are stabilized by the incorporation of a phosphite of the formula, ##EQU1## wherein one or two of groups R.sub.1, R.sub.2 or R.sub.3 has the formula, R(OC.sub.n H.sub.2n).sub.m --, in which R is an alkyl unsubstituted or substituted with at least one hydroxyl or chlorine, an alkenyl unsubstituted or substituted with at least one hydroxyl or chlorine, or an aralkyl, n has a value of from 1 to 4, and m has a value of from 1 to 8, and the remaining group R.sub.1, R.sub.2 and/or R.sub.3 is an alkyl unsubstituted or substituted with at least one hydroxyl or chlorine, an alkenyl unsubstituted or substituted with at least one hydroxyl or chlorine, an aralkyl or an unsubstituted aryl.
摘要翻译:含卤素的树脂,特别是聚氯乙烯,通过加入下式的亚磷酸酯R1-O | R2-OP | R3-O来稳定化,其中R 1,R 2或R 3中的一个或两个具有式R(OC n H 2n) )m-,其中R是未被取代或被至少一个羟基或氯取代的烷基,未取代或被至少一个羟基或氯或芳烷基取代的烯基,n具有1至4的数值,并且m 其值为1至8,剩余的基团R 1,R 2和/或R 3为未取代的或被至少一个羟基或氯取代的烷基,未被取代或被至少一个羟基或氯取代的烯基,芳烷基或 未取代的芳基。
摘要:
A method for forming a multilayer includes a process for forming a first conductive layer on a substrate; a process for forming a first insulating layer on the first conductive layer; a process for forming a second conductive layer on the first insulating layer and patterning the deposited second conductive layer; a process for forming a second insulating layer over the substrate so as to cover the patterned the second conductive layer; a process for forming a third insulating layer on the second insulating layer, wherein an etching speed of the third insulating layer is faster than that of the second insulating layer; and a process for forming contact holes at once that expose at least a part of the first conductive layer to the first insulating layer, the second insulating layer and the third insulating layer.
摘要:
There is provided an air bladder for a safety tire in which an air-impermeable layer is optimized to reduce an incidence of manufacturing defects. A hollow toric air bladder 1 is accommodated in a tire 2 and filled with air at an internal pressure determined in relation to the given pressure of the tire 2. Under the normal internal pressure state of the tire 2, a cavity S1 is formed at least between an inner surface of the tire 2 and the bladder 1. When the internal pressure in the cavity S1 of the tire 2 is suddenly lowered due to puncture or the like, the air bladder 1 radially expands and eventually reaches to the inner surface of the tire 2 to take over load support from the tire 2. The air bladder 1 comprises an air-impermeable layer 6 maintaining the internal pressure of the air bladder in the inner surface of the air bladder, and the air-impermeable layer 6 consists of at least one hollow toric layer 7 and at least one auxiliary layer 8 disposed on at least a part of the hollow toric layer 7.
摘要:
A light-emitting diode has a low-resistivity silicon substrate on which there are laminated a buffer layer, an n-type lower confining layer, an active layer of multiple quantum well configuration, and a p-type upper confining layer. The active layer is constituted of cyclic alternations of a barrier sublayer of InGaN, a first complementary sublayer of AlGaInN, a well sublayer of InGaN, and a second complementary sublayer of AlGaInN. The proportions of the noted ingredients of the active sublayers are all specified. The first and the second complementary sublayers prevent the evaporation or diffusion of indium from the neighboring sublayers.
摘要:
A care bedpan and a care bedpan system that are capable of reducing the burden of wasting excrements within the care bedpan, of enabling easy use of the bedpan, and of reducing the burden on both, the care-receiving person as well as the care-giving person are provided. A movable and portable care bedpan provided with a bedpan main body 10 having an opening 31 that is pressed against or disposed to oppose a pubic region of a care-receiving person for receiving excrements, and with a cover 33 provided to extend frontward from an upper portion of the opening 31 of the bedpan main body 10 to thereby comprise an entire opening of the bedpan together with the opening 31 of the bedpan main body 10. In the cover 33 is held by a holding mechanism which angle is adjustable, either in a multi-staged or non-staged manner, so as to adjust the size of the entire opening and to shield one's pubic region to be hardly visible from above. Upon connecting an accessory unit to the bedpan 10, it is possible to arrange a care bedpan system for supplying washing water, cleaning water (warm water) and warm air for drying and for sucking excrements (including waste water etc.) and collecting the same in a waste water tank.
摘要:
A stencil printing machine has a printing drum having a cylindrical circumferential wall adapted to receive a perforated stencil sheet wrapped on an outer circumferential surface thereof and driven to rotate around a central axis thereof the circumferential wall having an opening portion with many through holes formed therein, a non-opening portion formed around the opening portion, and at least one recessed portion formed in at least one part of the opening portion adjacent to the non-opening portion in an axial direction of the circumferential wall; an ink supplying roller situated in the printing drum for supplying ink to an inner circumferential surface of the cylindrical circumferential wall of the printing drum; and a press roller situated adjacent to the printing drum and being urged against the outer circumferential surface of the cylindrical circumferential wall of the printing drum.
摘要:
A system for inspecting an oil level in each part of a railroad car truck includes: an imaging unit that obtains an image of an oil level gauge; an oil level inspection unit that inspects whether or not the oil level in each part of the railroad car truck is within a predetermined range based on the image of the oil level gauge obtained by the imaging unit; a voice input unit adapted for an inspector to input, via voice, an inspection result; a voice processing unit that determines whether or not the inspection result inputted via the voice input unit is good based on the inputted inspection result, and converts a determination result into displayable data; a display unit that displays an oil level inspection result and the determination result; and a storage unit that stores, as data, the oil level inspection result and the determination result.