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76results about How to "Eliminate cumulative effects" patented technology

Devices and methods for endolumenal therapy

InactiveUS20090093767A1Promoting tissue in-growthAltering abilityDiagnosticsSurgeryGastrointestinal deviceLower esophagus
The present invention is directed generically to a means for altering the ability of the mammalian body to absorb nutritive content from ingested foodstuffs, and more specifically to an apparatus and method of use for an endolumenal sleeve (referred to also as an “intragastrointestinal device” or “gastrointestinal device”) positioned in the mammalian gastrointestinal (GI) tract. A suitable endolumenal sleeve is comprised of an anchor element and an opening at a proximal end, an elongate lumen or hollow open-ended tube having a transverse dimension, and a distal orifice. Optionally, an exterior aspect of the elongate lumen may include additional modes of attachment to the tissues walls of the GI tract through the use of one or more means for promoting tissue in-growth. The endolumenal sleeve is retained in the GI tract such that a substantial fraction of the food and liquids passing through the GI tract is channeled into the proximal opening and through an interlumenal space defined within the interior space of the endolumenal sleeve. Within the endolumenal sleeve there may be one or more restrictive means to constrain, impede or otherwise control the operative flow of material through the device. An individual restrictive means can either be of a fixed geometry or such means may include one or more elements which are adjustable in nature or function. The elongate lumen of the endolumenal sleeve is formed of a polymer composition suitable for controlled ingress of biological secretions, egress of certain selected nutritional elements, and may comprise either a single tubular structure or a multi-section (i.e. articulated and / or multiple lumen) assembly. When the endolumenal sleeve is in situ within the mammalian gastro-intestinal system, ingested foodstuffs are conveyed from the proximal end to said distal orifice. In typical applications, the proximal end of the endolumenal sleeve is positioned within the physiological region extending from the lower esophagus to the duodenum and the distal orifice is positioned within the physiological region extending from the upper duodenum to the lower jejunum, though further extension into the lower intestine is possible. Through proper selection of position for the endolumenal sleeve proximal and distal ends, combined by selection of the composition used in the fabrication of the elongate lumen, it is possible to finitely control the degree of nutritive absorption performed by the gastrointestinal tract.
Owner:KELLEHER BRIAN

Devices and methods for augmenting extragastric banding

InactiveUS20090093839A1Promoting tissue in-growthAltering abilitySurgeryDilatorsLower esophagusGastrointestinal device
The present invention is directed generically to a means for altering the ability of the mammalian body to absorb nutritive content from ingested foodstuffs, and more specifically to an apparatus and method of use for an endolumenal sleeve (referred to also as an “intragastrointestinal device” or “gastrointestinal device”) positioned in the mammalian gastrointestinal (GI) tract. A suitable endolumenal sleeve is comprised of an anchor element and an opening at a proximal end, an elongate lumen or hollow open-ended tube having a transverse dimension, and a distal orifice. Optionally, an exterior aspect of the elongate lumen may include additional modes of attachment to the tissues walls of the GI tract through the use of one or more means for promoting tissue in-growth. The endolumenal sleeve is retained in the GI tract such that a substantial fraction of the food and liquids passing through the GI tract is channeled into the proximal opening and through an interlumenal space defined within the interior space of the endolumenal sleeve. Within the endolumenal sleeve there may be one or more restrictive means to constrain, impede or otherwise control the operative flow of material through the device. An individual restrictive means can either be of a fixed geometry or such means may include one or more elements which are adjustable in nature or function. The elongate lumen of the endolumenal sleeve is formed of a polymer composition suitable for controlled ingress of biological secretions, egress of certain selected nutritional elements, and may comprise either a single tubular structure or a multi-section (i.e. articulated and/or multiple lumen) assembly. When the endolumenal sleeve is in situ within the mammalian gastro-intestinal system, ingested foodstuffs are conveyed from the proximal end to said distal orifice. In typical applications, the proximal end of the endolumenal sleeve is positioned within the physiological region extending from the lower esophagus to the duodenum and the distal orifice is positioned within the physiological region extending from the upper duodenum to the lower jejunum, though further extension into the lower intestine is possible. Through proper selection of position for the endolumenal sleeve proximal and distal ends, combined by selection of the composition used in the fabrication of the elongate lumen, it is possible to finitely control the degree of nutritive absorption performed by the gastrointestinal tract.
Owner:KELLEHER BRIAN

Flexibility motion control IP (Intellectual Property) core and implementation method thereof

The invention discloses a flexibility motion control IP (Intellectual Property) core and an implementation method thereof, belonging to the field of motion control. The IP core comprises a acceleration/deceleration module, an interpolation module, a pulse counting module, a pulse generation module, a bus controller and an RAM (Random Access Memory) interface module. The flexibility motion control IP core and the implementation method thereof aim to solve the problems that high speed and high precision cannot be achieved due to incapability of further reducing a control period since a motion control algorithm has a long running period in a general MCU (Micro Controller Unit) or DSP (Digital Signal Processor). The IP core has the characteristics of short control period and high output pulse precision, non-symmetrical linear acceleration and deceleration can be achieved, non-symmetrical S-shaped curve acceleration and deceleration can be achieved, two-axis or three-axis linear interpolation with the linear or the S-shaped curve acceleration and deceleration can be achieved, and two-axis arc interpolation at an uniform speed also can be achieved. Through the adoption of the IP core, motion control relevant algorithm is realized in a Verilog hardware description language soft core mode, the motion control relevant algorithm can be implemented in an FPGA (Field Programmable Gate Array), can be implemented in an ASIC (Application Specific Integrated Circuit) mode, and can be integrated into SoC (System On Chip), the typical working frequency is 100MHz, and feasibility is provided for building a flexibility motion control system.
Owner:SOUTH CHINA UNIV OF TECH

Bidirectional layered sample pressing device for preparing consolidation test sample and sample pressing method thereof

ActiveCN103712842AConsistent volume compressionUniform compactionPreparing sample for investigationTest sampleEngineering
The invention discloses a bidirectional layered sample pressing device for preparing a consolidation test sample and a sample pressing method thereof. The device is formed in the following manner: the inner wall of a guide cylinder is sleeved with a pressurization piston, the bottom surface of the flange of the pressurization piston is joined with the top of the guide cylinder, a cutting ring groove is formed in a position below the pressurization piston on the inner wall of the guide cylinder, the top of a cutting ring is embedded in the cutting ring groove of the guide cylinder, and the diameter of the cutting ring is equal to that of the pressurization piston; the cutting edge of the cutting ring is embedded in the hollow cavity of a circular ring-shaped projection on the top of a base; one or two disk-shaped cushion blocks are embedded in the inner cavity of the cutting ring; the distance between the bottom surface of the flange of the pressurization piston and the lower end face of the pressurization piston, the height of the inner wall above the cutting ring groove of the guide cylinder and the height of the cushion block are equal to 1 / n of the height of the cutting ring, and n is layering time in a test sample pressing process and is equal to 3 or 4. The pressing density of the test sample pressed by the device is more uniform, and interference caused by friction force of the ring wall in a sample loading process is small, so that the test data error of a consolidation test is small, and the test result is more accurate and reliable.
Owner:SOUTHWEST JIAOTONG UNIV

Cultivation method for rice direct dibble seeding in wedged ditches

The invention discloses a cultivation method for rice direct dibble seeding in wedged ditches, which belongs to the field of rice cultivation. In order to solve the problem that yield potential of high-yield high-quality varieties is difficult to fulfill by existing cultivation methods, the cultivation method for rice direct dibble seeding in wedged ditches includes the steps: firstly, tilling soil, namely performing no turning or irrigation after preceding harvesting, and digging a field to obtain a plurality of ditches, wherein row spacing between each two adjacent ditches is 18-22cm, each ditch in a triangular shape is wide end up, each ditch is 5-20cm deep and 3-6cm wide, two sides of each ditch are slopes relative to the horizontal plane, and an included angle between each slope and the horizontal plane is 40 DEG-70 DEG; secondly, post-treating rice seeds; thirdly, performing base fertilizer application, direct dibble seeding, and irrigation; and fourthly, performing field management. The traditional ploughing is replaced with wedging, so that farming intensity is reduced, interference to soil is lowered, energy sources are saved, labor is reduced, seeds for use are few, soilwater retention capacity is high, soil system stable is high, fertilizer utilization rate is high, root system growth environment is improved, and cost reducing, yield increase and efficiency enhancement are achieved.
Owner:HUNAN AGRICULTURAL UNIV

Gangue treatment method and application

The invention relates to the technical field of gangue treatment, in particular to a gangue treatment method and application. The treatment method comprises the steps of pickling gangue powder; addingwater for granulation after removing pyrites from the gangue powder, and obtaining gangue based microspheres; dipping the gangue based microspheres in solutions containing ferric salt and zinc salt,and obtaining dipped microspheres; performing ozone aeration and ultrasonic treatment to the dipped microspheres, and obtaining activated gangue microspheres; adding alkali to the activated gangue microspheres for solid-liquid separation, and obtaining activated gangue; and mixing the activated gangue and sodium alginate aqueous solutions, and obtaining gangue engineering soil through drying. Recovery and reuse of gangue are achieved, and the pyrite content of the end-product gangue engineering soil is reduced obviously; the phenomena of heat accumulation and gangue heating, even spontaneous combustion in the later accumulation process can be avoided greatly; the security threat is reduced, and the mechanical property of the gangue engineering soil is excellent, and can be applied to grainfor green land, engineering construction land and high-grade highway construction projects.
Owner:北京斯艾尔环境治理科技股份有限公司

Transistor vertical-cavity surface-emitting laser

The invention discloses a transistor vertical-cavity surface-emitting laser (T-VCSEL), and belongs to the technical field of an integrated photoelectronic device. The T-VCSEL comprises a buffer layer, a lower end face distributed Bragg reflector, a collector region, a base region, an emitter region and an upper end face distributed Bragg reflector which are successively arranged according to an epitaxial growth sequence. The T-VCSEL also comprises a collector, a base electrode and an emitter electrode which are connected with the collector region, the base region and the emitter region. A quantum well active region is arranged in the base region. The collector is arranged on the back of the buffer layer. The buffer layer and the lower end face distributed Bragg reflector are equipped with doping types same as the doping type of the collector region. According to the T-VCSEL, the length of the transmission path of carriers in the collector region is reduced from the existing tens of microns to several microns, and the carriers are imported from the emitter region; therefore, the bad influence of the voltage drop of an internal resistor on the control of the working state of the device can be effectively reduced; and moreover, the transverse distribution of the potential in the collector region is improved.
Owner:苏州长瑞光电有限公司

Silicon rubber-based non-linear cable accessory material and preparation method thereof

InactiveCN108017914AImprove conductance nonlinearityHigh breakdown strengthElectrical field strengthVulcanization
The invention belongs to the field of direct-current cable accessory materials, and particularly relates to a silicon rubber-based non-linear cable accessory material and a preparation method thereof.The preparation method comprises the following steps: firstly, preparing copper calcium titanate particles in certain particle size through a sol-gel method and by carrying out high-temperature calcination and ball milling; secondly, dispersing the copper calcium titanate particles in double-component liquid silicon rubber through in-situ polymerization; finally, carrying out hot-pressing and vulcanization forming, thus preparing the silicon rubber-based non-linear cable accessory material. The silicon rubber-based non-linear cable accessory material prepared by the invention has excellent conductance nonlinearity and relatively stable direct-current breakdown electric field strength and is capable of effectively improving conductance gradient between different materials, increasing the transportation capability of a current carrier and weakening an accumulative effect of space charges in the position of an interface, so that removing of local electric field distortion can be realized, electric field distribution in a cable accessory can be homogenized, the accessory insulation performance can be enhanced, the failure occurrence probability can be reduced, and the service life ofthe cable accessory can be prolonged. The preparation method and needed equipment are simple, the cost is low, and implementation is easy.
Owner:HARBIN UNIV OF SCI & TECH

Cultivation method for wedge plowing and transplanting rice

The invention discloses a cultivation method for wedge plowing and transplanting rice, belonging to the field of rice cultivation. To solve the problem of the low yield of high-yield high-quality varieties in the exiting cultivation mode, the cultivation method of the invention comprises the following steps: (1) plowing soil; not carrying out plowing and watering after harvesting former crop in rotation; and digging a plurality of ditches on a surface of a farmland, wherein the row spacing between two adjacent ditches is 20cm, the ditch is narrow at the bottom and wide at the top and has an inverted triangular shape, the depth of the ditch is 5-10cm, the width of the ditch is 3-6cm, the two side faces of the ditch are all oblique planes relative to a horizontal plane, and the included angle alpha is 40-70 degrees between the oblique plane and the horizontal plane; (2) applying base fertilizer, transplanting seedlings, and watering; and (3) subsequently managing the field. The cultivation method of the invention reduces the farming intensity by using wedge plowing instead of traditional ploughing, applies fertilizer to the bottom of the wedge-type ditch in a centralized way, reduces the disturbance to the soil, is energy-saving and labor-saving, has large water storage capacity of the soil and high soil system stability, increases the utilization ratio of fertilizer, improves the growth environment of root system, and realizes the effects of saving cost and increasing yield and efficiency.
Owner:HUNAN AGRICULTURAL UNIV

High-efficiency fidelity H.265 video information high-capacity hiding method

An existing video information hiding algorithm is summarized, an H.265 intra-frame prediction coding method is analyzed, an H.265 video information hiding method based on a coupling coefficient pair is provided. 1-bit data is embedded into an embedding coefficient of a DST / DCT coupling coefficient pair, corresponding compensation coefficients are compensated, and propagation and accumulation of errors in a block are controlled. According to the method, the video effect is greatly improved under the condition of the same embedding amount; the invention proposes the H.265 video information hiding method based on the texture features; the texture features of images are analyzed, coupling coefficient pairs and the texture features are combined, all reference pixels of a reference block cannot transmit embedding errors to adjacent prediction blocks, the problem of intra-frame distortion drift is fundamentally solved, and the method is simple and efficient; the method is suitable for high-super-definition videos and low-resolution videos at the same time, embedding of secret information can not be perceived by naked eyes while high information embedding capacity and good visual secret performance are obtained, and the influence on code streams is small.
Owner:荆门汇易佳信息科技有限公司
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