37results about How to "Suppression of shortcomings" patented technology

The invention discloses a silicon-carbon composite material with nano micropores and a preparation method as well as application thereof. The material comprises nano-silicon (Si) particles and a carbon nanofiber matrix, wherein the nano-silicon particles are dispersed in the carbon nanofiber matrix; and nano pores and micropores communicated with the nano pores are distributed in the carbon nanofiber matrix. The method comprises the steps of dissolving the nano-Si particles and polyacrylonitrile (PAN) in a solvent to prepare a mixed spinning solution, then carrying out electrostatic spinning on the mixed spinning solution, and curing spinning trickles in a coagulating bath to obtain a porous PAN-Si composite nanofiber; and then carrying out oxidation and carbonization treatment in sequence to obtain the silicon-carbon composite material with a nano micropore structure. The silicon-carbon composite material is applied to preparation of lithium ion battery cathode materials. Compared with the prior art, the silicon-carbon composite material ensures the overall electron transport capacity of the material while reserving buffer space for expansion of the nano-Si particles.

The invention discloses a silicon-carbon composite material with nano micropores and a preparation method as well as application thereof. The composite material comprises nano-silicon (Si) particles and a carbon nanofiber matrix, wherein nano pores and micropore channels communicated with each other are distributed in the carbon nanofiber matrix; the nano-Si particles are distributed in the carbon nanofiber matrix; one part of the nano-Si particles are embedded in the carbon nanofiber matrix; and the other part of the nano-Si particles are positioned in the nano pores. The method comprises the steps of carrying out electrostatic spinning on a polyacrylonitrile (PAN) spinning solution doped with the nano-Si particles and a polymer pore former (PPM) to obtain a PAN-Si-PPM composite nanofiber, and then carrying out oxidation and carbonization to obtain the silicon-carbon composite material. The silicon-carbon composite material is applied to preparation of lithium ion battery cathode materials. Compared with the prior art, the silicon-carbon composite material ensures the overall electron transport capacity of the material while reserving buffer space for expansion of the nano-Si particles.

An effective method enhances energy saving at low load in a resonant converter with a hysteretic control scheme for implementing burst-mode at light load. The method causes a current controlled oscillator of the converter to stop oscillating when a feedback control current of the output voltage of the converter reaches a first threshold value, and introduces a nonlinearity in the functional relation between the frequency of oscillation and said feedback control current or in a derivative of the functional relation, while the control current is between a lower, second threshold value and the first threshold value, such that the frequency of oscillation remains equal or smaller than the frequency of oscillation when the control current is equal to the second threshold value. Several circuital implementations are illustrated, all of simple realization without requiring any costly microcontroller.

Method of damping the vibrations of at least one pair of stay cables (4a, 4b) of a civil engineering structure (1), in which the stay cables of said pair are linked by a damper (6) having a first stiffness in response to tensile stress and a second stiffness in response to compressive stress, the first stiffness being greater than the second stiffness.

A method for high-temperature electrolysis of steam and another gas to be electrolysed, chosen from carbon dioxide and nitrogen dioxide, implemented in an electrolysis reactor includes a stack of elementary electrolysis cells each made of a cathode, an anode and an electrolyte inserted between the cathode and the anode, and a plurality of electric and fluid interconnectors each arranged between two adjacent elementary cells with one of the surfaces thereof in electric contact with the anode of one of the two elementary cells and the other one of the surfaces thereof in electric contact with the cathode of the other one of the two elementary cells. The steam is supplied and distributed to the cathode of one of the two adjacent elementary cells and either carbon dioxide or nitrogen dioxide is supplied and distributed to the cathode of the other one of the two elementary cells.

Provided is an air blowing unit for a vehicle which, even when a backflow prevention means which prevents the flow of air which flows back through a gap formed between a bottom surface of an impeller and an upper surface of a motor flange is adopted, optimally maintains a size of the gap thus suppressing noises and the collection of moisture and, can suitably boost a pressure of air in a scroll case portion.

With respect to a case of an air blowing unit, a projecting portion is formed in a projecting manner on an inner side of a second wall portion on a side opposite to a first wall portion where an air suction port is formed as an air backflow prevention means. The projecting portion is positioned outside an impeller in the radial direction with a predetermined gap between a radial outer end of the impeller and the projecting portion.

A pair of substrates forming the active matrix liquid crystal display are fabricated from resinous substrates having transparency and flexibility. A thin-film transistor has a semiconductor film formed on a resinous layer formed on one resinous substrate. The resinous layer is formed to prevent generation of oligomers on the surface of the resinous substrate during formation of the film and to planarize the surface of the resinous substrate.

A plasma processing apparatus includes a vacuum evacuable processing chamber, a first electrode divided into an outer electrode and an inner electrode, a second electrode, a first and a second high frequency power application unit for applying to the second electrode a first and a second high frequency power having a relatively high frequency and a relatively low frequency, respectively, a first and a second DC voltage application circuit apply a DC voltage to the outer and the inner electrode, respectively, and a processing gas supply unit. A space between the first electrode and the second electrode serves as a plasma generation space, and frequency-impedance characteristics of the outer electrode are set such that the impedance increases at the frequency of the second high frequency power and decreases at the frequency of the first high frequency power as the DC voltage applied to the outer electrode increases.

A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.

The present invention relates to a grinding roller for vertical axis crushers, produced by foundry casting, said roller comprising inserts with a massiveness modulus V/S comprised between 3 and 5 cm, preferably between 3.2 and 4.5 cm, said inserts being embedded in a metal matrix consisting of ductile iron or steel.

A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.

A motor vehicle part having at least one portion visible from the outside of the part, characterized in that the portion is at least partly covered with an electronic ink suitable for forming a pattern on the portion. A method is also disclosed for manufacturing such a part and a method for manufacturing a subassembly incorporating this part. Another embodiment relates to a set of parts, a marking assembly, an optical unit and a vehicle comprising such a part.

A sleeve station dedicated to the assembly of a sleeve and a mandrel for a flexographic press. The sleeve station can be loaded manually, and assembles the sleeve with the mandrel in a vertical orientation when both are in a vertical orientation with aligned axes, avoiding problems caused by the bending of the sleeves during assembly. After loading of the sleeve, it is returned to a horizontal axis orientation.

A position detection system (10) includes receivers (20a to 20g) constituting a radio mesh network, and a gateway device (30). Each of the receivers (20a to 20g) includes a receiving unit (22), a sending unit (23), and a control unit (24). When the receiving unit (22) in each of the receivers (20a to 20f) receives the beacon, the control unit (24) generates first reception information containing information indicating signal strength of the received beacon and identification information of the relevant receiver, and sends the first reception information from the sending unit (23). When the receiving unit (22) receives second reception information, the control unit (24) sends the second reception information. When receiving the second reception information generated by the other receiver, the receiver (20g) connected to the gateway device (30) sends the received second reception information to the server device (34) through the gateway device (30).

A produce filling apparatus includes a bin filling head and a disk arranged under the head. The disk is made up of two plates, each having one or more openings. Plural sensors beneath the disk detect the presence of produce at a predefined vertical distance from the lower plate. A control unit detects the instantaneous position of both overlying rotating plates and determines the speed of rotation of each of the rotating plates in a manner that depends on a pre-coded external signal generated by the sensors and by the instantaneous positions of the rotating plates. The control unit processes the information received and controls the respective angular speed of the plates so that the respective openings are vertically aligned, so as to distribute the produce to those bins in which an absence of underlying produce is sensed.

The invention discloses a remnant detection method fusing multiple models, and relates to the technical field of remnant detection. In the remnant detection method fusing multiple models, a suspectedremnant target is tracked by using a tracking technology; relevant parameters can be adjusted according to actual conditions; when related targets are lost due to pedestrian flow shielding in the scene, continuous tracking of the targets can be effectively ensured; a background modeling result and a target detection result are effectively combined, and false detection targets are greatly reduced through multiple filtering condition screening. According to the method, the foreground and background separation model and the target detection model are logically and ingeniously fused, the advantages of the foreground and background separation model and the advantages of the target detection model are combined, and therefore the defects are better overcome, high robustness can still be kept forcomplex light and shadow environments and various kinds of shielding under the condition that the system performance is guaranteed, and high accuracy is guaranteed.