Abstract: The present invention discloses a zonal trabecular uni-compartmental tibial plateau containing zirconium-niobium alloy on oxidation layer and preparation method, including following steps: using zirconium niobium alloy powder as raw material, conducting a 3D printing for one-piece molding to obtain an intermediate product of the uni-compartmental tibial plateau, performing hot isostatic pressing and cryogenic oxidation to obtain the uni-compartmental tibial plateau; the lower surface of the semi-tibial plateau support and the surface of the keel plate are both provided with a bone trabeculae; the zonal trabecular uni-compartmental tibial plateau adopts the structure of arranging step distributed bone trabeculaes which can reduce the fretting wear of the interface between the prosthesis and the bone, and reduce the stress shielding effect of the prosthesis on the bone tissue, homogenize the stress of the tibial plateau bone tissue, and improve the initial stability and long-term stability of the uni-compartmen

Abstract: The invention discloses an electric defroster, comprising a housing with a handle; a working wheel rotatably connected with housing and at least partially protrudes out of the surface of the housing, scraping pieces extending along the axial direction is arranged on the surface of the working wheel, and a power mechanism used for driving the working wheel to rotate relative to the housing; scraping pieces rotate in the circumferential direction to scrape ice. The invention utilizes the working wheel to roll and deice the glass surface, the flexibility of the position for scraping ice is higher and ice at the corner can be effectively scraped; there are more contact surface can be selected, ice scraping more flexible; scraped ice is quickly discharged from space between adjacent scraping pieces, ensuring ice scraping efficiency; the invention can not only be used for scraping ice, but also for cleaning and removing rust.

Abstract: The present disclosure discloses a zonal trabecular uni-compartmental femoral condylar component containing zirconium-niobium alloy on oxidation layer and preparation method, including following steps: using zirconium niobium alloy powder as raw material, conducting a 3D printing for one-piece molding to obtain an intermediate product of the uni-compartmental femoral condylar component, performing hot isostatic pressing and cryogenic oxidation to obtain the uni-compartmental femoral condylar component; the uni-compartmental femoral condylar component includes an articular surface and an osseointegration surface, a bone trabeculae is arranged on the osseointegration surface.

Abstract: A computer implemented method and a gas sensor device comprising a spectroscopic sensing unit (2), a memory (3) and a control unit (4), is described. The control unit (4) is configured to output calibrated values, which are measures of a concentration of a gas component measured by the spectroscopic sensing unit (2), wherein the calibrated values are determined from measurement values obtained from the spectroscopic sensing unit (2) and a baseline calibration parameter retrieved from the memory (3). The control unit is configured to update the baseline calibration parameter (zero) by identifying the minimum measurement value obtained during a predetermined first time period (14), obtaining a time for the first time period (14), obtaining a model value corresponding to the obtained time, determining an updated baseline calibration parameter based on the minimum measurement value and the model value, and updating the baseline calibration parameter stored in the memory (3).

Abstract: Methods and apparatuses for encoding and decoding a multiplane image. In the methods, a partitioned multiplane image (PMPI) is used to represent a three-dimensional scene; the PMPI includes a plurality of sub-multiplane images (sMPIs) to respectively represent a plurality of scene areas that are obtained by dividing the three-dimensional scene; initial depths of the plurality of sMPIs are determined according to depth information of the three-dimensional scene areas represented by the sMPIs; and each sMPI includes a plurality of layers that are obtained by performing sampling at different depths in the scene area represented by the sMPI.

Abstract: A virtual view drawing method, a rendering method and apparatus, and a decoding method are provided. A first visibility map and a first texture map of a target view are generated. Region segmentation is performed on the first texture map to obtain a region segmentation result. A parameter representing segmentation performance is determined according to the region segmentation result. Region re-segmentation is performed on the first texture map when the parameter representing segmentation performance does not satisfy a first condition, to obtain a final region segmentation of the first texture map. Pixels to-be-updated in a region in the first visibility map are updated according to the final region segmentation result of the first texture map, to obtain a second visibility map. The second visibility map is shaded to obtain a second texture map of the target view.

Abstract: The present disclosure provides a method and a device for preparing a modified poly (m-phenylene isophthalamide) (PMIA) fiber by continuous polymerization-dry-wet spinning. The method includes the following steps: (1) preparing a mixed solution of m-phenylenediamine (MPD) and a copolymerized diamine monomer in N,N-dimethylacetamide (DMAC) serving as a solvent using a cosolvent; (2) mixing isophthaloyl chloride (IPC) with the mixed solution of the MPD and the copolymerized diamine monomer in the DMAC, and conducting pre-polycondensation and polycondensation in sequence to obtain a modified PMIA resin solution; and (3) subjecting the modified PMIA resin solution to additive addition, filtration, defoaming, and dry-wet spinning to obtain the modified PMIA fiber.

Abstract: The invention discloses an electric defroster, comprising a housing with a handle; a working wheel rotatably connected with housing and at least partially protrudes out of the surface of the housing, scraping pieces extending along the axial direction is arranged on the surface of the working wheel, and a power mechanism used for driving the working wheel to rotate relative to the housing; scraping pieces rotate in the circumferential direction to scrape ice. The invention utilizes the working wheel to roll and deice the glass surface, the flexibility of the position for scraping ice is higher and ice at the corner can be effectively scraped; there are more contact surface can be selected, ice scraping more flexible; scraped ice is quickly discharged from space between adjacent scraping pieces, ensuring ice scraping efficiency; the invention can not only be used for scraping ice, but also for cleaning and removing rust.

Abstract: A method for generating a virtual view includes generating an initial visibility map of a target view according to a depth map of a source view; segmenting the initial visibility map to obtain segmentation regions; identifying target pixels in the segmentation region according to a quantity relationship of two categories of pixels in the segmentation region of the initial visibility map; updating pixel values of the target pixels in the segmentation region of the initial visibility map to obtain a first visibility map of the target view; and processing the first visibility map of the target view to obtain a target texture map of the target view.

Abstract: The present disclosure discloses a zonal trabecular uni-compartmental femoral condylar component containing zirconium-niobium alloy on oxidation layer and preparation method, including following steps: using zirconium niobium alloy powder as raw material, conducting a 3D printing for one-piece molding to obtain an intermediate product of the uni-compartmental femoral condylar component, performing hot isostatic pressing and cryogenic oxidation to obtain the uni-compartmental femoral condylar component; the uni-compartmental femoral condylar component includes an articular surface and an osseointegration surface, a bone trabeculae is arranged on the osseointegration surface.

Abstract: A virtual view drawing method and apparatus, a rendering method and apparatus, and a decoding method and apparatus, and devices and a storage medium are provided. The virtual view drawing method comprises: generating an initial visibility map of a target view according to reconstructed depth maps of source views; performing quality improvement processing on the initial visibility map to obtain a target visibility map of the target view; and coloring the target visibility map of the target view to obtain a target texture map of the target view.

Abstract: The present invention discloses a zonal trabecular uni-compartmental tibial plateau containing zirconium-niobium alloy on oxidation layer and preparation method, including following steps: using zirconium niobium alloy powder as raw material, conducting a 3D printing for one-piece molding to obtain an intermediate product of the uni-compartmental tibial plateau, performing hot isostatic pressing and cryogenic oxidation to obtain the uni-compartmental tibial plateau; the lower surface of the semi-tibial plateau support and the surface of the keel plate are both provided with a bone trabeculae; the zonal trabecular uni-compartmental tibial plateau adopts the structure of arranging step distributed bone trabeculaes which can reduce the fretting wear of the interface between the prosthesis and the bone, and reduce the stress shielding effect of the prosthesis on the bone tissue, homogenize the stress of the tibial plateau bone tissue, and improve the initial stability and long-term stability of the uni-compartmen

Abstract: The present invention discloses a scene recognition method, a training method and a device based on pyramid attention, belonging to the field of computer vision. The method includes: pyramid layering a color feature map and a depth feature map respectively, calculating the corresponding attention map of each layer; taking the output of the attention of the last layer as the output; taking the attention output of the last layer as the final feature map, for the remaining layers, adding the result after upsampling of the final feature map of an upper layer to the attention output of this layer as the final feature map of this layer; scaling the attention map and the final feature map, using the average of two new attention maps as the final attention map, mapping the largest k position in the final attention map to the final feature map of this layer.

Abstract: The present invention discloses a pedestrian trajectory prediction method and system based on a multi-interaction spatio-temporal graph network, which belong to the field of pedestrian trajectory prediction.

Abstract: A point cloud reconstruction method and apparatus based on a pyramid transformer, a device, and a medium are provided. The method includes: after obtaining point feature data corresponding to each view, inputting the point feature data into a dual-channel pyramid network; when passing through a first channel, inputting an updated output of an attention mechanism of each layer to a next layer, when passing through a second channel, splicing and inputting the updated output of the attention mechanism of each layer and the updated output of the attention mechanism of a corresponding layer of the first channel in a same layer as the next layer to the next layer; converting the updated output of the attention mechanism of a bottommost layer of the second channel into point cloud coordinates to obtain a point cloud result, and taking an intersection of the point cloud result to characterize a target object.

Abstract: The present invention relates to the total chemical synthesis of the monosaccharide 35# (R??H), the disaccharide 36# (R??H; R??H), the trisaccharide 37# (R??H; R??H; R???H) and the tetrasaccharide 1# (R??H; R??H; R???H) of the following general formula wherein R represents —Y—NH2Y represents a linker R? is H or R? is H or R?? is H or of the lipopolysaccharide from Neisseria meningitidis, as well as to the trisaccharide 37# and the tetrasaccharide 1#, to vaccines containing at least one of the saccharides 1#, 35#, 36#, and 37# and to the use of such vaccine for immunization against diseases caused by infection with bacteria containing the tetrasaccharide ?-GlcNAc-(1?2)-?-Hep-(1?3)-?-Hep-(1?5)-?-Kdo or the trisaccharide ?-Hep-(1?3)-?-Hep-(1?5)-?-Kdo or ?-GlcNAc-(1?2)-?-Hep-(1?3)-?-Hep, especially for immunization against meningitis, septicaemia, pneumonia and nasopharyngitis caused by Neisseria meningitidis.