Abstract: A method for preparing the prefabricated crack defects includes defining a defect area, defining a volume percentage of the crack defects in the defect area, adjusting the proportion of spherical powder, the proportion of hollow powder and process parameters of defect preparation according to the volume percentage of the crack defects, based on the technique of laser melting deposition, printing the defect area layer by layer by using the defect preparation powder and the process parameters of defect preparation, wherein the particle size of the defect preparation powder is between 45 ?m and 150 ?m, the proportion of spherical powder?93% and the proportion of hollow powder<0.5%, the process parameters of defect preparation including: laser power of 450W-550W, scanning rate of 600 mm/min-1200 mm/min, powder feeding rate of 4 g/min-12 g/min, spot diameter of 1 mm-1.2 mm, scanning spacing of 0.5 mm-0.8 mm and layer thickness of 0.08 mm-0.2 mm.

Abstract: A non-destructive testing method for crack defects, and a testing standard part and a manufacturing method thereof, used for the non-destructive testing of crack defects of an additive manufacturing workpiece. The manufacturing method of the crack defect standard part comprises: step A, setting a crack defect area of the standard part, in the crack defect area, the proportion of the crack defects in the crack defect area is set as a first proportion value; step B, selecting an additive manufacturing forming process for manufacturing the crack defect area to obtain a first process parameter of the additive manufacturing forming process corresponding to the first proportion value; and step C, performing the additive manufacturing forming process based on the first process parameter to form the crack defect area. The non-destructive testing method for crack defects of the present invention has the advantages of accurate and reliable testing results.

Abstract: A non-destructive testing method for lack-of-fusion (LOF) defects, and a testing standard part and a manufacturing method thereof, used for the non-destructive testing of LOF defects of an additive manufacturing workpiece. The manufacturing method of the LOF defect standard part comprises: step A, setting a LOF defect area of the standard part, in the LOF defect area, a proportion of the LOF defects in the LOF defect area is set as a first proportion value; step B, selecting an additive manufacturing forming process for manufacturing the LOF defect area to obtain a first process parameter of the additive manufacturing forming process corresponding to the first proportion value; step C, performing the additive manufacturing forming process based on the first process parameter to form the LOF defect area.

Abstract: An image processing method and apparatus, and an electronic device are provided, belonging to the field of image processing technologies. The method includes: obtaining, through an image sensor, an image acquired in real time; determining a to-be-stored image and a to-be-previewed image through a central processing chip according to the image acquired in real time; performing enhancement processing on the to-be-stored image and the to-be-previewed image through an image processing chip; and storing the image obtained after the enhancement processing through a memory, and displaying the to-be-previewed image obtained after the enhancement processing on a display screen.

Abstract: A video encoding method includes: obtaining an affine transformation matrix based on image data of at least two collected video frames and first data, where the affine transformation matrix is used to indicate a mapping relationship between corresponding macroblocks in every two adjacent video frames of the at least two video frames, and the first data is acceleration data and angular velocity data of an electronic device in a process of collecting the at least two video frames; determining a first object based on the affine transformation matrix; and encoding the at least two video frames based on the first object, where the first object includes at least one of the following: an encoding search range of each macroblock in the at least two video frames, or an intra-coded frame of the at least two video frames.

Abstract: The present invention belongs to the field of chemical industry and discloses a nanocellulose containing ultrastable water-based foam, a method of preparing the same, and uses thereof. The foam comprises, by mass fraction, the following components: based on 100 parts of the total mass of a compound water-based foam, 0.1-2.0 parts of nanocellulose hydrogel, 0.5-5.0 parts of sodium dodecyl sulfate, 1.0-5.0 parts of tetradecanol, 0.1-3.0 parts of polyvinyl alcohol, and the balance water. The above components are stirred at a high speed to generate a foam, thereby obtaining the nanocellulose containing ultrastable water-based foam.

Abstract: Disclosed in the present disclosure are a silicon-germanium heterojunction bipolar transistor and a method for manufacturing the same, which relate to a field of semiconductor technologies. The silicon-germanium heterojunction bipolar transistor and the method for manufacturing the same of the present disclosure can achieve the purpose of exposing a part of the sidewall of the polysilicon extrinsic base region, so as to make a necessary space for subsequently growing the silicon-germanium connection base region synchronously with the silicon-germanium epitaxial intrinsic base region, and implement a recessed silicon-germanium connection base region structure which can effectively improve the device performance.

Abstract: A forming powder for a forming part with a low tensile anisotropy by additive manufacturing, which can be used for forming the forming part with low tensile anisotropy, a method for forming a forming part with a low tensile anisotropy, and a forming part with a low tensile anisotropy. The forming powder for the forming part with low tensile anisotropy by additive manufacturing includes the following chemical components in terms of mass percentage (wt-%): 0.03%?C?0.09%, 20.50%?Cr?23.00%, 0.50%?Co?2.50%, 8.00%?Mo?10.00%, 0.20%?W?1.00%, 17.00%?Fe?20.00%, 0%<B<0.001%, 0%?Mn?1.00%, 0%?Si?0.15%, 0%?O?0.02%, 0%?N?0.015%, the rest are Ni and inevitable impurities.

Abstract: A lurasidone hydrochloride oral soluble film composition, a preparation method therefor and a use thereof are provided. The lurasidone hydrochloride oral soluble film composition contains an active drug, a film-forming material, a plasticizer and a flavoring agent. The active drug is (3aR,4S,7R,7aS)-2-((1R,2R)-2-[4-(1.2-benzisothiazole 3-yl)piperazine-1-methyl]cyclohexylmethyl)hexahydro-4.7-methylene-2H-isoindole-1,3-dione hydrochloride, as shown in Formula I.

Abstract: An integrated low-pass and band-pass filter unit comprises an inner cavity formed by a shell of conductive materials; one or more low-pass resonators and two or more band-pass resonators comprised in the inner cavity. The low-pass and band-pass resonators are integrally formed by electroplated sheet metal material, and a part of each of the low-pass and band-pass resonators is coated with dielectric material. The two or more band-pass resonators are arranged at two sides of the inner cavity such that at least two resonators are aligned to face each other. The integrated low-pass and band-pass filter unit further comprises a first separator of electroplated sheet metal arranged in the inner cavity between the low-pass resonators and band-pass resonators and a second separator of electroplated sheet metal arranged in the inner cavity between the band-pass resonators at the two sides of the inner cavity.

Abstract: A resonator apparatus, a filter apparatus as well as a radio frequency and microwave device are disclosed. According to an embodiment, the resonator apparatus comprises an electrically conductive case and a dual-mode dielectric resonator provided in the electrically conductive case. The dual-mode dielectric resonator comprises a first dielectric block having a shape of a columnar body whose cross section is a cruciform. A mode coupling structure for coupling two resonant modes of the dual-mode dielectric resonator is provided in the columnar body. A bottom face of the columnar body is supported by an inner face of the electrically conductive case or by a supporting member provided on the inner face of the electrically conductive case. In at least one extending direction of a first extending direction and a second extending direction of the cruciform which are perpendicular to each other, lateral end faces of the columnar body are spaced apart from inner faces of the electrically conductive case.

Abstract: The present invention discloses a method and system of calibration for multi-lidar and integrated-navigation, comprising: obtaining raw point cloud data from multiple lidars and integrated navigation data, and calculating an initial extrinsic parameter characterizing a conversion relationship between each lidar and said integrated navigation data; adjusting the initial extrinsic parameter and the integrated navigation data to obtain a first-type extrinsic parameter between each lidar and the integrated navigation apparatus, as well as optimized integrated navigation data; obtaining, according to the first-type extrinsic parameter, a compensation matrix for compensating a vertical component of an extrinsic parameter between each lidar and the integrated navigation apparatus; and obtaining a second-type extrinsic parameter between individual lidars according to the compensation matrix and the first-type extrinsic parameter of each lidar as well as the optimized integrated navigation data.

Abstract: An apparatus and method for providing a simpler and more robust mechanism for transporting materials to be dried through a vacuum microwave chamber in rotating containers. The apparatus (20) has a vacuum chamber (22), an input end (26) to introduce a container (24) into the chamber, and a discharge end (28) to remove the container. The container has spur gear teeth (60) extending along its outer circumferential surface. The apparatus has a single roller (42) having spur gear teeth (46) extending along its outer circumferential surface. The spur gear teeth of the roller mesh with the spur gear teeth of the container such that rotation of the roller about its longitudinal axis rotates the container. The apparatus also includes means for holding the container on the roller, means for moving the container through the chamber, a microwave generator 76 arranged for transmission of microwave radiation from the generator into the chamber, and means for reducing pressure inside the chamber.

Abstract: A pemetrexed disodium liquid composition, a preparation method therefor and use thereof are provided. The pemetrexed disodium liquid composition contains an active pharmaceutical ingredient and a stabilizer. The active pharmaceutical ingredient is one or more of pemetrexed disodium, and a pharmaceutically acceptable complex, a salt, a solvate and a hydrate of pemetrexed disodium. The stabilizer is one or more of an organic solvent, a pH regulator and an antioxidant.

Abstract: Disclosed are 1-hydroxy-2-naphthoate or bis-hydroxynaphthenate of cariprazine, a new solid form thereof, a pharmaceutical composition thereof, and a preparation method therefor and the use thereof. The cariprazine salt and the solid form thereof, especially 1-hydroxy-2-naphthoate of cariprazine in an insoluble salt of cariprazine has the advantages of a long-acting sustained-release preparation, can be developed into a suspension injection, can also solve the problems of the risk of the dissociation or the lack of sustained release effect of existing salt types such as cariprazine hydrochloride, can achieve the effect of long-acting administration, and greatly improves the compliance of a patient and the bioavailability and medication safety of a drug.

Abstract: The present disclosure relates to a communication device such as a multiplexer or a demultiplexer, comprising: a housing comprising a common first port and a plurality of second ports; a plurality of cavity filters for transmitting a wireless signal between the first port and a corresponding one of the second ports, each of the plurality of cavity filters comprising one or more cavities formed in the housing and a resonator arranged in each cavity; and a coupler for coupling the first port to each cavity filter. The coupler is arranged in one cavity of each cavity filter, and is coupled to the resonator in the one cavity.

Abstract: A method for prefabricating pore defects by controlling a SLM process, including performing laser scanning on a specified metal melt layer (LY) according to a first scan path (P1) and a second scan path. The first scan path (P1) and the second scan path (P2) have a path overlap zone (A0), the path overlap zone (A0) has a predetermined width, and laser energy input superimposed in the path overlap zone (A0) is controlled to reach a predetermined energy value, whereby keyholes are formed at a plurality of positions in a lengthwise direction of the path overlap zone (A0), the specified metal melt layer (LY) is taken as a defect layer, and the keyholes in the path overlap zone (A0) is taken as pore defects.

Abstract: Embodiments of the present disclosure provide a crystal growth device including: a crucible including a raw material cavity for placing a raw material and a growth cavity for crystal growth; and at least one insulation device disposed on at least one side surface outside the crucible.

Abstract: The present disclosure relates to a cover for a cavity filter, comprising a cover body made of plastic and an inner metal layer applied on an inner side of the cover that is in contact with a cavity of the cavity filter, wherein a capacitance-influencing structure is provided on the inner side of the cover and comprises a recess formed in the cover body and/or a protrusion integrally formed with a base of the cover body and/or a non-metallized area in the inner metal layer. The present disclosure also relates to a cavity filter comprising the above-said cover.