79 results about "Cerebellum granule cell" patented technology

A group of multiple hollow fibers may be shaped to introduce angular divergence among the fibers, or to introduce a selected longitudinal oscillation into the fibers. In one shaping technique, the fibers are held in parallel while upper and lower crimping assemblies of parallel crimping bars are drawn together on opposite sides of the parallel fibers. When bars of the opposing assemblies draw sufficiently close, they sandwich the fibers in between them, causing each fiber to assume a shape that oscillates as the fiber repeatedly goes over and then under successive bars. Since the crimping bars are aligned at oblique angles to the fibers, the peaks and troughs of successive fibers are offset. While in this position, the fibers are heated and then cooled to permanently retain their shapes. A different shaping technique utilizes a lattice of crisscrossing tines defining multiple apertures. In this technique, the lattice and fibers are positioned so that each fiber passes through one of the apertures. Then, the lattice and/or the fibers are slid apart or together until the lattice holds the fibers in a desired configuration, where the fibers have a prescribed outward divergence relative to each other. While in this position, the fibers are heated and then cooled to permanently retain this angular divergence.

An optical circuit comprises: (a) a body having an x and y axis and two sides substantially parallel to the y-axis and separated along the x-axis; (b) a plurality of first ports along one of the two sides, each first port comprising a number of substantially paralleled fibers; and (c) a plurality of second ports along the other of the two sides, each second port comprising a number of substantially parallel fibers. The ports are interconnected with the fibers such that (i) the fibers of a given second port comprise a fiber from each of the first ports, and (ii) the fibers interconnecting the first and second ports are arranged asymmetrically about at least one of the x or y axes.

The method for making a continuous laminate, in particular suitable as a spar cap or another part of a wind energy turbine rotor blade comprises the steps of providing a plurality of parallel fibers, embedding the fibers in a curable matrix material, curing the matrix material so as to obtain a fiber reinforced laminate having upper and lower major surfaces, and forming channels into at least one of the upper and lower major surfaces of the laminate wherein the channels on the upper and/or lower major surfaces are angled with respect to the direction of the fibers.

A composite structural reinforcing strip is affixed to a structure to be reinforced (such as a bridge span, foundation pillar, or similar structure) by the use of several fasteners which extend through the strip and into the structure. The reinforcing strip preferably includes elongated continuous parallel fibers which have lengths extending along the length of the strip, and nondirectional fibers distributed transversely across the strip, with a polymer matrix affixing the parallel and nondirectional fibers. The strip may be placed on the structure to be reinforced, and may be attached thereon by actuating a common powder-actuated fastener gun to send fasteners through the strip and into the structure.

The invention discloses slubby yarn which comprises one part of parallel fiber bundles and one part of bamboo joint fiber bundles with raised bamboo joint sections. The invention further provides a production method of the slubby yarn. In the method, a ring spinning fine yarn machine provided with a slubby yarn device is adopted, wherein the ring spinning fine yarn machine comprises a front roller, a middle roller II, a middle roller I and a rear roller which are sequentially arranged for constituting a four-roller drafting device, and the production method comprises the following steps: inputting roving from the rear roller, and drafting by virtue of the front roller so as to form the bamboo joint fiber bundle; simultaneously drafting another type of fibers between the middle roller II and the front roller, and then forming the parallel fiber bundles; and converging the parallel fiber bundles and the bamboo joint fiber bundles at a front jaw, twisting the two into one yarn through a twisting structure, and outputting. The slubby yarn has the following beneficial effects: 1) the slubby yarn comprises one part of the parallel fiber bundles, thereby having great strength and enabling the slubby yarn to be applicable to being woven into a high-grade fabric; and 2) the four-roller fine yarn machine is adopted for production, the product fluctuation is small, the quality of the slubby yarn is improved, and the cost is reduced.

Multiple, single fiber webs, consisting of parallel fiber bundles and non-wovens connected by an adhesive thread grid, positioned on a common shaft for simultaneous unwinding. The single webs are dispensed under tension from a primary unwinding drum while, in the same process, an additional adhesive thread grid of non-woven or fiber mat is dispensed and, using tension winding, combined with the single webs into a homogeneous laminate.

Disclosed in the invention is a planar optical waveguide type parallel optical assembly comprising a circuit board, an optical waveguide, a laser array, a driver, an optical detector array and a transconductance amplifier. A photoelectric chip is installed at a first side of the circuit board in a back bonding mode. A light-transmitting device is arranged at the circuit board; and the optical waveguide is contacted to a second side of the circuit board and contains a 45-degree mirror surface. In addition, the invention also discloses a planar optical waveguide type parallel optical module. With the planar optical waveguide type parallel optical assembly and optical module, the bandwidth density of optical interconnection is improved; and the process based on the photoelectric integration scheme is simple, so that large-scale production can be realized beneficially. The photoelectric chip is installed by using the back bonding technique, thereby effectively reducing an electric parasitic effect. The light path enters the optical waveguide by a bending way and is directly coupled to a pluggable interface of the parallel fiber, so that the lens is not needed; the less optical elements are used, the coupling structure is simple, and the cost is low. The polymer film is used for manufacturing the optical waveguide; the bending radius is small; and the maneuverability is enhanced.

An additional fiber reinforced layer reduces crack propagation in a lightweight structure of an outer skin adhesively bonded to a reinforcing frame. For this purpose the additional fiber reinforced layer is interposed between the outer skin and the frame and adhesively bonded to the outer skin and to the frame. The additional layer has reinforcing fibers extending in parallel to each other or the reinforcing fibers are woven into a fabric embedded in a synthetic adhesive bonding material. The embedding of the parallel fibers or of the fiber fabric in the bonding material is performed either prior to the bonding or during the bonding of the additional layer to the outer skin and to the reinforcing frame.

The invention discloses a preparation method of precursor fibers for wet-process spinning PAN-based carbon fibers. The preparation method comprises the following steps: (1) preparation of a polyacrylonitrile raw solution; (A) dissolving raw materials; (B) carrying out polymerization reaction; (C) obtaining the polyacrylonitrile raw solution; and (2) a spinning process: carrying out a condensation and molding process, a water washing process, an oil applying process, a drying and densifying process, a high-pressure steam drafting process, secondary oil application and a loosening hot molding process on the prepared polyacrylonitrile raw solution to obtain the precursor fibers. The residual amount and gel of the raw solution prepared by the method are less and the hydrophily is great; primary fibers obtained by the raw solution in a spinning and condensation molding process are dense and have high transparency, so that the operation in a spinning process is stable when the spinning speed is increased to be more than 125m/min; the solvent residual amount of the precursor fibers is small, and no broken fibers and parallel fibers are formed; the single-path yield is greatly improved and the production cost of the precursor fibers is greatly reduced; and under a high-speed spinning condition, a production process of T700-grade and T800-grade precursor fibers is met.

The invention discloses a core-shell structure compound fiber, a preparing method thereof and application of the compound fiber to a polymer base flexible compound thin film. The core-shell structurecompound fiber is composed of a core and a shell which are coaxial. The core is a ferrite fiber with the strong magnetism. The shell is a ceramic fiber with the high dielectric constant. The polymer base flexible compound thin film is prepared from the core-shell structure compound fiber as the filler and polymer base body material, and nanometer fibers in the compound thin film are arrayed in parallel (perpendicular to the surface of the thin film) in the direction away from the thin film; by means of the parallel fibers in the outward direction, the compound thin film can have the high dielectric strength and energy storage density under the low field intensity. Thus, due to the novel compound fiber structure and the presented excellent dielectric performance, the prepared polymer compound thin film is expected to be widely applied on the aspects of embedded capacitors, pulsed power supply technologies and other energy storage devices.

A radiation detector having a fiber optic wedge with a plurality of parallel optical fibers is provided for yielding a more cost-effective radiation detector by reading out more scintillator elements or crystals per photodetector surface area. The fiber optic wedge provides a cost efficient method for increasing the number of scintillators that may be read out by a single position-sensitive photodetector of the radiation detector, such as a PET camera.

The invention discloses an in-plane quasi-isotropic structure-stealthy composite material and further comprises a preparation method of the in-plane quasi-isotropic structure-stealthy composite material. The in-plane quasi-isotropic structure-stealthy composite material comprises a base body and a reinforcement body which are composited and solidified through a VARTM process. The base body is madeof resin; the reinforcement body is made of sandwich-type three-dimensional stereo woven material, the woven material is composed of a plurality of mutually-parallel fiber layers and normal fibers perpendicular to the fiber layers, and the fiber layers are bound together by the normal fibers through a weaving method. The preparation method specifically comprises the following steps of 1, weavingof the reinforcement body; 2, reinforcement body moulding; 3, glue injecting and solidifying; and 4, demoulding. The problems that as for a stealthy composite material in the prior art, the electromagnetic property is isotropic, the anti-impact property is poor, and the stealthy composite material is likely to be layered after being impacted are solved.

The invention provides a method for preparing carbon fibers by carbonizing polyacrylonitrile precursors. The method comprises the following steps: 1, pre-oxidizing in multiple temperature zones at the temperature of 160-310 DEGC for 60-120 minutes with the draft degree of 0.5-10 percent; 2, carbonizing in multiple temperature zones at low temperature of 400-1000 DEG C for 60-120 seconds with the total draft degree of 1-8 percent; and 3, carbonizing in multiple temperature zones at high temperature of 800-1600 DEG C for 60-120 seconds with the draft degree of negative 8 percent-negative 1 percent. According to the method, the temperature gradient, temperature range, draft ratio, wire traveling speed and other parameters in each stage of the carbonizing process are reasonably designed, so that the pre-oxidizing and carbonizing processes can be performed smoothly, and pre-oxidized fibers have good heat resistance, high molecular orientation degree and compact molecular distribution, uniform carbon fiber structure and few broken and paralleled fibers, and have a tensile strength of over 5000MPA, so that the aim of improving carbon fiber product quality can be achieved.

The invention discloses a bicolor bamboo joint composite yarn and a production method thereof. The bicolor bamboo joint composite yarn is produced by adopting a four-roller spinning frame; after horn mouths and roller notch grooves are additionally arranged, three strands of rough yarns can be simultaneously input and bamboo joint fiber bundles are subjected to independent immersing treatment and tensile failure treatment; after the bamboo joint fiber bundles are subjected to immersing treatment, the bamboo joint fiber bundles are tensioned off to form bamboo joint sections due to the fact that the roller movement is intermittent; and small sections are clamped and twisted between parallel fiber bundles of two strands of normal spinning, are in special fiber distribution and form the bamboo joint composite yarn with clear bamboo joint sections. The bicolor bamboo joint composite yarn has the advantages of multiple yarns; bamboo joints at two end heads of the tensioned bamboo joint sections are in special clear distribution and are different from raw materials of the parallel fiber bundles in difference and dyeing rate, so that the bamboo joints and the raw materials of the parallel fiber bundles have different special effects after being dyed; and the bicolor bamboo joint composite yarn is novel and varied in appearance and broad in market prospect and realizes the change of colors and the change of functions.

The invention relates to a spinning assembly for producing three-component parallel fibers. 7 flow guiding slots communicated with a third distribution plate are arranged at one face of a composite board to introduce fused materials, meanwhile 4 flow guiding slots are arranged at the positions, corresponding to the first, third, fifth and seventh flow guiding slots of the 7 flow guiding slots, at the other side of the composite board; radial communicated slots are arranged on drainage holes among the 4 flow guiding slots to composite three fused materials, and a spinneret plate with spinneret holes corresponding to the drainage holes among the 4 flow guiding slots is designed. Different types of three-component composite fibers can be produced by changing the variety of the fused materials or adding color master batches with different colors, the fibers can be applied to medical and anti-fake fibers and the three-component composite anti-fake fibers are obviously improved in anti-fake effect compared with single-component and dual-component composite fibers.

The invention provides an armor plate and a manufacturing method thereof. The armor plate comprises a ceramic layer, a connecting layer, a plurality of polyethylene fiber layers and bonding layers. The multiple polyethylene fiber layers are laminated from top to bottom. The adjacent polyethylene fiber layers are bonded through the bonding layers. Each polyethylene fiber layer is pressed and moldedthrough a laminating mode. Any polyethylene fiber layer is provided with a plurality of parallel fiber filaments arranged unidirectionally. Between everytwo adjacent polyethylene fiber layers, the fiber filaments of one polyethylene fiber layer and the fiber filaments of the other polyethylene fiber layer are arranged in an intersecting mode. The ceramic layer is combined with the multiple laminated polyethylene fiber layers through the connecting layer. The surface, making contact with the ceramic layer and the polyethylene fiber layers, of the connecting layer is the rough surface. Throughthe arrangement of the connecting layer, the bonding strength of the ceramic layer is enhanced. When the ceramic layer is broken through, left bullet holes cannot expand, propagating kinetic energy cannot cause looseness of other ceramic around, and the bulletproof property of the armor plate is remarkably improved.

The invention relates to a device for laying a unidirectional fiber layer formed by a plurality of segments 18 on a mobile bracket 1, wherein the mobile bracket 1 is provided with two segment-feed stations 5a, 5b along the movement direction; each segment-feed station comprises a storage unit 6a, 6b and a paving device 12a, 12b; yarn clampers 10a, 10b are used for extracting parallel fibers from the storage units 6a, 6b; the fibers are cut out based on a fixed length and are paved on the bracket 1 by the paving devices 12a, 12b; the bracket 1 is formed by two annular conveying chains 3 in an ordinary mode; a station 4 is used in the following process, such as winding the produced unidirectional fiber layer on a yarn roller; the two segment-feed stations 5a, 5b are arranged along the movement direction and longitudinal direction of the bracket 1 one by one and are paved above clearance; a first segment-feed station is paved with a segment 18 having a clearance 19; and a second segment-feed station 6b is accurately filled in the clearance 19 by matching with the paved segment. In such a manner, the production rate is greatly increased.