Abstract: The present disclosure provides a preparation method for liquid capsules and its application in nutritional gummies, belonging to the technical field of food processing. The preparation method for the liquid capsules provided by the present disclosure is as follows: hydrocolloid, a solvent and colorant are used to prepare a wall material, a functional substance, an additive and a dispersant are used to prepare a core material, the wall material is processed into capsule shell, and the core material is encapsulated in the capsule shell and then dried to obtain the liquid capsules. The present disclosure obtains the liquid capsules with good formability by adjusting and controlling the composition and ratio of the wall materials and core materials, which enables the liquid capsules to be effectively added to gummies syrup, thereby obtaining high-quality nutritional gummies with good stability.

Abstract: The present disclosure provides a method for preparing natural starch microspheres with a uniform particle size. The method includes the following steps: heating natural starch and water for gelatinization to form a water phase; controlling a temperature of a substance including a low-polarity solvent to form an oil phase; dispersing the water phase into the oil phase to obtain a mixed solution; treating the mixed solution under reduced pressure, and carrying out separation to obtain preliminarily solidified starch microspheres; and washing the preliminarily solidified starch microspheres to remove the residual oil phase on the surface, and drying to obtain the natural starch microspheres. Compared with the present technology, the method of the present disclosure can retain the molecular structure of the natural starch and has a high yield, and the prepared natural starch microspheres have a uniform particle size and can load water-soluble and fat-soluble loading objects.

Abstract: An image processing method includes obtaining an original image, and identifying a shadow area of a target object in the original image. The target object includes at least one of a photographing device or a support apparatus of the photographing device. The method further includes eliminating the shadow area of the target object in the original image.

Abstract: Disclosed are an automatic remote water supply system in a low gravity environment, which includes a water supply unit, an environment detection unit and a control unit. The water supply unit includes a water bag, an air inlet pipe, a water pipe and a water pump on the water pipe. The bottom of the water bag has an air inlet and a water outlet. The air inlet pipe is communicated with the water bag through the air inlet. The water pipe is communicated with the water bag through the water outlet. The environment detection unit is configured to detect environmental information in the ecosystem to which the water supply system belongs in the low gravity environment. The control unit is configured to control the starting state of the water pump according to the environmental information, so that water in the water bag flows out through the water pipe.

Abstract: An circuit board assembly includes a first circuit board, a second circuit board stacked with the first circuit board, and a connection plate connected between the first circuit board and the second circuit board. The connection plate includes a signal transmission part and at least one ground part at a spacing to the signal transmission part. The ground part can be used as a reference ground for a signal transmitted by the signal transmission part, so that the characteristic impedance of the signal transmission part is controllable, and the signal transmitted by the signal transmission part has strong continuity, thereby maintaining good matching performance and reducing an insertion loss caused by characteristic impedance mismatch.

Abstract: Disclosed is an aromatic compound. Such compounds can locally produce a long-lasting nerve blocking effect, have an analgesic effect, an anti-pruritic effect, etc., and can be used in the preparation of a long-acting local anaesthetic drug, a local analgesic drug and an anti-pruritic drug.

Abstract: The present invention discloses a method for preparation of vitamin and carotenoid powder; the vitamin and carotenoid powder comprises vitamin, carotenoid microcapsule and physical gel protection film covered on the surface of the vitamin and carotenoid microcapsule; the physical gel protection film is made from super-molecular system; the super-molecular system comprises the following constituents of parts in weight: vegetable oil: 6-30 parts; gel: 0.5-3 parts and antioxidant: 0.5-3 parts. The hot super-molecular solution is sprayed on the surface of cold vitamin and carotenoid microcapsule during preparation to form a specific 3D network structure that is used to bind the liquefied vegetable oil to form a physical gel protection film; the physical gel protection film has improved product storage stability as well as the its stability for application in feedstuff, food and health care products.

Abstract: A tunable antenna. includes a radio frequency integrated circuit, a first frequency modulation branch coupled to the radio frequency integrated circuit, a first antenna coupled to the radio frequency integrated circuit through the first frequency modulation branch, a second antenna coupled to the radio frequency integrated circuit through a second frequency modulation branch. The first antenna corresponds to a first frequency, the second antenna corresponds to a second frequency, and the first frequency and the second frequency are respectively a transmit frequency and a receive frequency in a specified frequency band. The first antenna and the second antenna are respectively connected to the radio frequency integrated circuit through the frequency modulation branches when the tunable antenna is being designed.

Abstract: A stable carotenoid microcapsule having high bioavailability and a preparation method therefor. The method includes the following steps: a) mixing carotenoid crystals with an organic solvent, and dissolving the mixture to obtain a carotenoid solution; b) introducing the carotenoid solution and a grease into a dispersion system to fully disperse carotenoid into the grease, and vaporizing the organic solvent to obtain a carotenoid-containing dispersion liquid; c) mixing the carotenoid-containing dispersion liquid and a protective colloid aqueous solution, and emulsifying the mixture to obtain an emulsion; and d) performing spray granulation and drying to obtain a carotenoid microcapsule.

Abstract: An circuit board assembly includes a first circuit board, a second circuit board stacked with the first circuit board, and a connection plate connected between the first circuit board and the second circuit board. The connection plate includes a signal transmission part and at least one ground part at a spacing to the signal transmission part. The ground part can be used as a reference ground for a signal transmitted by the signal transmission part, so that the characteristic impedance of the signal transmission part is controllable, and the signal transmitted by the signal transmission part has strong continuity, thereby maintaining good matching performance and reducing an insertion loss caused by characteristic impedance mismatch.

Abstract: An electronic device includes a first circuit board, a second circuit board stacked with the first circuit board, and a connection plate connected between the first circuit board and the second circuit board. The connection plate includes a signal transmission part and at least one ground part at a spacing to the signal transmission part. The ground part can be used as a reference ground for a signal transmitted by the signal transmission part, so that the characteristic impedance of the signal transmission part is controllable, and the signal transmitted by the signal transmission part has strong continuity, thereby maintaining good matching performance and reducing an insertion loss caused by characteristic impedance mismatch.

Abstract: The present invention discloses a selective hydrogenation catalyst and a preparation method and an application thereof, belonging to the technical field of catalysts. The selective hydrogenation catalyst comprises an active component and a carrier for supporting the active component, wherein the active component is a transition metal particle, the carrier is modified by a flexible chain ligand in advance, one end of the flexible chain ligand is uniformly distributed on the surface of the carrier, and the other end of the flexible chain ligand is coordinated on a transition metal. When the catalyst is used for catalytic hydrogenation reaction of dehydrolinalool or 2-methyl-3-butyn-2-ol, the stability is good, the catalyst still has high selectivity after being used for a long time, and the quality of a hydrogenation product can be guaranteed.

Abstract: A tunable antenna. includes a radio frequency integrated circuit, a first frequency modulation branch coupled to the radio frequency integrated circuit, a first antenna coupled to the radio frequency integrated circuit through the first frequency modulation branch, a second antenna coupled to the radio frequency integrated circuit through a second frequency modulation branch. The first antenna corresponds to a first frequency, the second antenna corresponds to a second frequency, and the first frequency and the second frequency are respectively a transmit frequency and a receive frequency in a specified frequency band. The first antenna and the second antenna are respectively connected to the radio frequency integrated circuit through the frequency modulation branches when the tunable antenna is being designed.

Abstract: The present invention discloses a selective hydrogenation catalyst and a preparation method and an application thereof, belonging to the technical field of catalysts. The selective hydrogenation catalyst comprises an active component and a carrier for supporting the active component, wherein the active component is a transition metal particle, the carrier is modified by a flexible chain ligand in advance, one end of the flexible chain ligand is uniformly distributed on the surface of the carrier, and the other end of the flexible chain ligand is coordinated on a transition metal. When the catalyst is used for catalytic hydrogenation reaction of dehydrolinalool or 2-methyl-3-butyn-2-ol, the stability is good, the catalyst still has high selectivity after being used for a long time, and the quality of a hydrogenation product can be guaranteed.

Abstract: The present invention discloses a method for preparation of vitamin and carotenoid powder; the vitamin and carotenoid powder comprises vitamin, carotenoid microcapsule and physical gel protection film covered on the surface of the vitamin and carotenoid microcapsule; the physical gel protection film is made from super-molecular system; the super-molecular system comprises the following constituents of parts in weight: vegetable oil: 6-30 parts; gel: 0.5-3 parts and antioxidant: 0.5-3 parts. The hot super-molecular solution is sprayed on the surface of cold vitamin and carotenoid microcapsule during preparation to form a specific 3D network structure that is used to bind the liquefied vegetable oil to form a physical gel protection film; the physical gel protection film has improved product storage stability as well as the its stability for application in feedstuff, food and health care products.

Abstract: The present disclosure belongs to the technical field of catalysis, and particularly relates to a metal oxide coated ceramic corrugated plate catalyst, its preparation method and application thereof in preparation of key intermediates of citral. The catalyst consists of a ceramic corrugated plate carrier and a metal oxide active layer coated on a surface of the carrier, wherein the metal oxide active layer is a metal oxide formed by active ingredient titanium and at least four other metal elements selected from vanadium, chromium, manganese, iron, zirconium, niobium and molybdenum.

Abstract: An electronic device includes a first circuit board, a second circuit board stacked with the first circuit board, and a connection plate connected between the first circuit board and the second circuit board. The connection plate includes a signal transmission part and at least one ground part at a spacing to the signal transmission part. The ground part can be used as a reference ground for a signal transmitted by the signal transmission part, so that the characteristic impedance of the signal transmission part is controllable, and the signal transmitted by the signal transmission part has strong continuity, thereby maintaining good matching performance and reducing an insertion loss caused by characteristic impedance mismatch.

Abstract: Disclosed in the present invention is a method for preparing an oil-dispersible carotenoid preparation, comprising (by weight parts): mixing 100 parts of carotenoid microcapsule, 100-400 parts of vegetable oil and 0.1-1 part of oil-soluble antioxidant; and grinding the mixture in a colloid mill in a nitro—gen atmosphere and at 10-30° C. to obtain a uniform oil-dispersible carotenoid preparation, wherein the preparation contains 2%-14% carotenoid with an average particle size of up to 0.1-1 ?m, and 100 parts of carotenoid microcapsule contains 10.5-35.8 parts carotenoid, 0.1-1 part of water-soluble antioxidant, and the remainder is a water-soluble colloid. The advantages of the present invention lie in that the oil-dispersible form has a high stability as the surface of the carotenoid particles is still protected with a dense water-soluble colloid, and that an oil-dispersible carotenoid preparation containing carotenoid with a content of up to 2%-14% and an average particle size of only 0.

Abstract: The invention discloses an ultrathin, waterproof and sound-permeable composite module, which comprises a waterproof and sound-permeable composite module body, wherein the waterproof and sound-permeable composite module body comprises a metal matrix, an adhesive and a waterproof sound-permeable membrane, the metal matrix is bonded to the waterproof sound-permeable membrane by the adhesive, the metal matrix is provided with a step, the step is integrally formed with the metal matrix, the step is divided into a first step and a second step, and the adhesive is arranged as a single-component epoxy system thermosetting adhesive. In place of traditional die-cut articles, the ultrathin, waterproof and sound-permeable composite module of the invention is bonded to a product, thus fundamentally solving the problems that the traditional die-cut articles have poor uniformity, difficulty in mass production and wide adhered glue.