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115results about How to "Effective influence" patented technology

Endovascular implant for the injection of an active substance into the media of a blood vessel

InactiveUS20050027350A1Low production costAlocal side-effects are very substantially excludedHeart valvesBlood vesselsBiomedical engineeringVascular wall
The invention concerns an endovascular implant for the application of an active substance into the media 22 of a blood vessel and two processes for the production thereof. A base body 42 of the implant has at least in portion-wise manner at a surface 40 which is towards the blood vessel, a plurality of microdevices 10 for injection of the active substance. Each microdevice 10 includes on the one hand at least one microcannula 38 which is raised out of the surface 40 of the implant to such an extent that, when the implant bears against a wall 12 of the blood vessel in surface contact, the microcannula penetrates into the media 22 of the blood vessel, and on the other hand at least one active substance deposit 36 which is in communication with at least one microcannula 38.
Owner:BIOTRONIK

Attitude estimation method and system for on-orbit three-dimensional space object under model restraint

An attitude estimation method for an on-orbit three-dimensional space object comprises an offline feature library construction step and an online attitude estimation step. The offline feature library construction step comprises: according to a space object three-dimensional model, acquiring multi-viewpoint characteristic views of the object, and extracting geometrical features therefrom to form a geometrical feature library, where the geometrical features comprise an object main body height-width ratio, an object longitudinal symmetry, an object horizontal symmetry, and an object main-axis inclination angle. The online attitude estimation step comprises: preprocessing an on-orbit object image to be tested and extracting features, and matching the extracted features in the geometrical feature library, where an object attitude characterized by a characteristic view corresponding to a matching result is an attitude estimation result. A dimension scale and position relationship between various components of an object are accurately acquired in a three-dimensional modeling stage, thereby ensuring subsequent relatively high matching precision. An attitude estimation system for an on-orbit three-dimensional space object is also provided.
Owner:HUAZHONG UNIV OF SCI & TECH

Semi-physical simulation method and device for UAV electromagnetic interference communication environment

The invention discloses a semi-physical simulation method and device for a UAV electromagnetic interference communication environment. The semi-physical simulation method and device for the UAV electromagnetic interference communication environment provided by the present invention use a combination of software simulation and hardware simulation, can not only support complex channel fading and various interference patterns, but also simulate the influence of an antenna and the geometric structure of a device to be tested on a radiation signal. The semi-physical simulation method and device forthe UAV electromagnetic interference communication environment provided by the present invention support the communication scenario simulation where a transmitter, multiple jammers and a receiver areall in a high-speed motion state and the performance evaluation of the device to be tested, and support automated testing and result analysis.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Pharmaceutical or nutraceutical composition with sustained release characteristic and with resistance against the influence of ethanol

A pharmaceutical or nutraceutical composition with a core, an inner coating layer, and an outercoating layer, wherein a pharmaceutical or a nutraceutical active ingredient is contained in the core, one or more salts of alginic acid is contained in the inner coating layer, and one or more water-insoluble polymers or copolymers is contained in the outer coating layer. In the composition, the ratio of the amount of the one or more salts of alginic acid in the inner coating layer is at least 2.5:1 by weight to the amount of the one or more water-insoluble polymers or copolymers in the outer coating layer.
Owner:EVONIK OPERATIONS GMBH

Mass-coupling arrangement for a vehicle

The invention relates to an earth-coupling arrangement (12) for a vehicle (10), with an earth-receiving element (14) for receiving an earthing object (16), a guide arrangement (18) by means of which the earth-receiving element (14) is mounted movably relative to the vehicle (10), and with coupling means (20) which are designed to couple the earth-receiving element (14) to a vehicle structure connected fixedly to the vehicle (10) and / or at least partially to decouple said earth-receiving element from the vehicle structure, wherein the coupling means (20) have an actuator (22) which is designed to adjust the degree of the coupling and / or the temporal profile of the coupling.
Owner:ROBERT BOSCH GMBH

Downhole coal seam pulse detonation wave directional fracturing permeability-increasing method

A method for permeability improvement for a downhole coal seam by directional fracturing with pulsed detonation waves, which is applicable to gas control in coal seam areas with high gas concentration and low air permeability. The permeability improvement method is as follows: first, drilling a pulsed detonation borehole and pulsed detonation guide boreholes from a coal roadway to a coal seam respectively; then, pushing a positive electrode connected to a positive output side of an explosion-proof high-voltage electrical pulse generator to the bottom of the pulsed detonation borehole and pushing a negative electrode connected to a negative output side of the explosion-proof high-voltage electrical pulse generator to the bottom of the pulsed detonation guide borehole; connecting the pulsed detonation borehole and the pulsed detonation guide boreholes to an extraction pipeline for gas extraction, after electrical pulsed detonation fracturing for the coal seam is carried out. The method disclosed in the present invention utilizes the high instantaneous energy provided by electrical pulsed detonation waves to fracture a coal mass, so as to form a fissure network in the coal mass between the pulsed detonation borehole and the pulsed detonation guide boreholes; thus, the air permeability coefficient of the coal mass can be increased by 200-400 times, the effective influence scope of gas extraction of a single borehole for gas extraction can be enlarged by 3-4 times, the extracted gas volume from the borehole can be increased by 3-8 times, and the coal seam gas pre-extraction time can be shortened effectively.
Owner:CHINA UNIV OF MINING & TECH
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