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229 results about "Internal cell" patented technology

Three-dimensional large aperture tissue engineering scaffold based on nano-fibers and application thereof

The invention discloses a three-dimensional large aperture tissue engineering scaffold based on nano-fibers which is prepared in the following steps: a nano-fiber membrane which is made from electrostatic spinning is cut into fiber bundles with the diameter of 10mum-1mm. The fiber bundles are overlapped and the pore spacing between the fibers is 10mum-1mm. A three-dimensional structure is assembled and is bonded to be fixed. Thus, the three-dimensional large aperture tissue engineering scaffold which comprises the nano-fibers is obtained. The three-dimensional large aperture tissue engineering scaffold based on the nano-fibers has the beneficial effects that: (1) a nano-fiber secondary structure macroporous layer of the scaffold can promote the growth, the proliferation, the differentiation, and the like of target cells to form certain tissues, and a micron fiber primary structure macroporous layer of the scaffold can provide full tissue ingrowths space to defect internal cell tissues; (2) with good mechanical property, the scaffold can greatly reduce the requirement of polymeric biomaterials and degradation products; (3) the scaffold can be applied to bulk defect repairing and organizing engineering of tissues including bones, tendons, cartilages, skins, etc.
Owner:ZHEJIANG UNIV

Stretch-electricity combinational stimulation cell culture device

The invention discloses a stretch-electricity combinational stimulation cell culture device. The device comprises a cell culture box, a cell culture cavity fixing frame, a cell culture cavity, a stepper motor and a signal generator, wherein the culture box is provided with a porous channel communicated with outside; the cell culture cavity is fixed in the cell culture cavity fixing frame; the cell culture cavity comprises a fixed threaded rod, a groove body, a fixed clamping apparatus, an elastic membrane, a sliding clamping apparatus and a sliding threaded rod; the elastic membrane is fixed on the fixed clamping apparatus and the sliding clamping apparatus; the fixed clamping apparatus is connected with the fixed threaded rod; the sliding clamping apparatus is connected with the sliding threaded rod; the fixed clamping apparatus, the elastic membrane and the sliding clamping apparatus are positioned in the groove body; the sliding threaded rod is connected with the stepper motor; andthe signal generator is connected with a metal electrode in the cell culture cavity. The stretch-electricity combinational stimulation cell culture device overcomes the disadvantage of incapacity of simulating a physical microenvironment in which internal cells are subject to stretching force and electric stimulation at the same time in the conventional method, establishes a cell culture method under the condition of combining stretching force stimulation with electricity stimulation, and promotes the development of cell and tissue culture methods and related tissue engineering reactors.
Owner:BEIHANG UNIV

Multicast cell buffer for network switch

An input port for a network switch includes a cell buffer for receiving incoming unicast and multicast cells and for writing each cell into an internal cell memory. The cell buffer thereafter forwards each unicast cell from the cell memory to one network switch output port and forwards a separate copy of each multicast cell to each of several network switch output ports. When the cell buffer writes a unicast cell to the cell memory, it sends a pointer to the storage location of the unicast cell to a queue manager. When the cell buffer writes a multicast cell to the cell memory, it sends several pointers to the queue manager, one for each output port that is to receive a copy of the multicast cell, with each pointer pointing not to the multicast cell's storage location but to an empty storage location in the cell memory. The cell buffer also maintains a database relating each pointer it sent to the queue manager to an actual storage location of a unicast or multicast cell. The queue manager queues the pointers an order in which cells are to be forwarded from the cell buffer, and thereafter returns a pointer to the cell buffer whenever the cell buffer is to forward a unicast cell or a copy of a multicast cell from the cell memory. The cell buffer applies each returned pointer to the database to determine the actual location of the unicast or multicast cell to be forwarded.
Owner:MICROSEMI STORAGE SOLUTIONS US INC

Novel flexibly-packaged lithium ion battery and preparation method therefor

The invention discloses a novel flexibly-packaged lithium ion battery and a preparation method therefor. The service life of the flexibly-packaged lithium ion battery can be prolonged, and the safety performance can be improved; two rings of sealed packaging edges are arranged on the periphery of an aluminium plastic film cell of the flexibly-packaged lithium ion battery; the two packaging edges comprise an inner side packaging edge and an outer side packaging edge; and an inert gas airbag is arranged between the inner side packaging edge and the outer side packaging edge. According to the novel flexibly-packaged lithium ion battery, the inert gas airbag is arranged around the cell part of the novel flexibly-packaged lithium ion battery, so that the internal cell is isolated from the external; moisture in the outside is hard to penetrate the packaging part and enter the interior of the cell, so that the service life of the battery is prolonged, and the production cost is saved; the inert gas airbag is arranged around the cell part of the novel flexibly-packaged lithium ion battery; the inner side packaging is relatively thick and the outer side packaging is relatively thin, so that when the interior of the battery cell is inflated, the inner side packaging part is inflated to be opened firstly, and the inert gas enters the cell part; therefore, a large amount of air is prevented from entering the interior of the cell to react with lithium to result in danger, and the safety performance of the battery is improved.
Owner:SHANDONG GOLDENCELL ELECTRONICS TECH

Soft-package lithium battery preparation method capable of increasing energy density

The invention provides a soft-package lithium battery preparation method capable of increasing energy density. The method includes the steps of firstly, preparing a positive electrode plate with an electrode lug welding area and an electrode plate vacancy area at the edge part and a negative electrode plate with an electrode lug welding area and an electrode plate vacancy area at the edge part; secondly, punching two membrane notches in the edge part of a membrane; thirdly, sequentially stacking the negative electrode plate, the membrane and the positive electrode plate, wherein the electrodelug welding area and the electrode vacancy area of the positive electrode plate correspond to the electrode vacancy area and the electrode lug welding area of the negative electrode plate, and the twomembrane notches of the membrane correspond to the electrode lug welding areas and the electrode plate vacancy areas; fourthly, welding electrode lugs in the electrode lug welding areas to form internal cells; fifthly, injecting electrolyte into the internal cells, and packaging to obtain a soft-package lithium battery. The method has the advantages that collector welding areas outside the electrode plate active layers of the battery electrode plates are transferred into the electrode plate active layers, electrode lug welding only needs to occupy the small area of the electrode plate activelayers, the electrode lugs do not need to be bent, space in the battery can be utilized sufficiently, and the volume energy density of the lithium battery is increased.
Owner:柔电(武汉)科技有限公司
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