Abstract: A stretch-resistant potato starch hydrogel and a preparation method thereof are provided. The preparation method includes the following steps: S1, preparation of gel slices; S2, aging of gel slices; S3, rehydration of gel slices; s4, tensile property and texture property test: testing the tensile property and texture property of the rehydrated potato starch gel by TG probe of a texture analyzer; S5, determining the optimal aging time, rehydration temperature and rehydration time of the potato starch hydrogel. The invention uses the above-mentioned stretch-resistant potato starch hydrogel and the preparation method thereof to obtain the starch hydrogel PSH?18-100-20S with excellent tensile strength, and the tensile strength is 750%-800%. The preparation parameters are determined, which provides a theoretical basis for the application of starch hydrogel in food.

Abstract: Absorbent cores comprising a layered structure and methods of manufacture are disclosed. An absorbent article can include a layered absorbent structure having top and bottom layers enclosing a reinforcement layer. The body can have a first absorbent layer between the reinforcement layer and the bottom layer, a second absorbent layer between the top layer and the reinforcement layer, and a third absorbent layer disposed between the top layer and the second absorbent layer with the third absorbent layer comprising fibrous absorbent material. The first and second absorbent layers can include superabsorbent material, and superabsorbent material can be embedded within the reinforcing layer. Adhesive can be disposed between the top layer and the third absorbent layer, between the second absorbent layer and the reinforcement layer, and between the first absorbent layer and the bottom layer.

Abstract: Absorbent cores comprising a layered structure and methods of manufacture are disclosed. In one embodiment, an absorbent body may comprise a top layer comprising a liquid permeable web material, a bottom layer comprising a web material, and a reinforcement layer disposed between the top layer and the bottom layer. The absorbent body may further comprise a first absorbent layer disposed between the reinforcement layer and the bottom layer, the first absorbent layer comprising absorbent material which comprises substantially only superabsorbent material and a second absorbent layer disposed between the top layer and the reinforcement layer, the second absorbent layer comprising absorbent material which comprises absorbent material. The body may also comprise adhesive disposed between the top layer and the second absorbent layer, between the second absorbent layer and the reinforcement layer, and between the first absorbent layer and the bottom layer.

Abstract: A power calculation method including obtaining a first optical signal and a second optical signal; detecting first optical power of each waveband in the first optical signal and second optical power of each waveband in the second optical signal; calculating, based on the first optical power, a first optical power variation that is of each waveband of the first optical signal and that is used after the first optical signal is transmitted from a transmitting end to a receiving end, and calculating, based on the second optical power, a second optical power variation that is of each waveband of the second optical signal and that is used after the second optical signal is transmitted from the transmitting end to the receiving end; and determining a first compensation value and a second compensation value based on the first optical power variation and the second optical power variation.

Abstract: A method of updating map data, an electronic device, and a storage medium, which relate to a field of computer technology, and in particular to intelligent transportation technology. The method of updating map data includes: acquiring a traffic event text, where the traffic event text includes location data and reference direction data; determining candidate road data in the map data based on the location data; determining target road data from the candidate road data based on the reference direction data; updating the target road data based on the traffic event text.

Abstract: Disclosed are a secondary battery and a battery pack including the secondary battery. The secondary battery includes a negative electrode plate, the negative electrode plate includes a negative electrode current collector and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector, the negative electrode active material layer includes a negative electrode active material. A grain size of the negative electrode active material is XS nm, a non-Faraday capacitance of the negative electrode plate is Cdl nF, satisfying 0.05?Cdl?10, and a relationship of the grain size XS and the non-Faraday capacitance Cdl satisfies 0.1??{square root over (Cdl-XS)}?3.

Abstract: The present invention relates to a preparation method of an edible and biodegradable environmental-friendly tableware, and the present invention provides a preparation method of a natural macromolecule-based edible and degradable tableware, where the principles of endogenous diffusion and polymer crosslinking to prepare an edible tableware such as a straw, a cup and a bowl from a microscopic state. The tableware material of the present invention may degrade rapidly under natural conditions and requires no composting. The tableware prepared by the method of the present invention has an excellent water stability performance. In terms of material acquisition, carrageenan, sodium alginate and other raw materials are widely available and stable, and may constitute a good substitute for grain starch, wood, etc., and the material cost is low.

Abstract: Absorbent structures and methods of forming absorbent structures are disclosed. An absorbent structure may comprise a body side liner (28), an outer cover (26), and an absorbent structure. The absorbent structure may comprise a top material, a bottom material, a lofty nonwoven reinforcing material between the top material and the bottom material, and an absorbent layer of superabsorbent particles (318) and adhesive filaments (316) between the top material and the lofty nonwoven.

Abstract: Disclosed are a secondary battery and a battery pack. In the secondary battery, a negative active material layer is disposed on a current collector of a negative electrode sheet, the negative electrode active material layer comprises a negative active material, and the negative electrode sheet has a non-faradaic specific capacitance value of 50-250 nF/g, thereby ensuring the quantity of electrochemical active sites on the surface of the negative electrode sheet, facilitating the contact between the negative electrode sheet and an electrolyte, accelerating the ion-electron conduction rate, reducing the charge transfer resistance, effectively improving the charging rate capability of the secondary batteryimproving the current density of the negative electrode sheet, improving the energy density of the secondary battery, and realizing excellent dynamic performance and cycle performance of the secondary battery.

Abstract: A secondary battery and a power consumption device are provided in the present application. The secondary battery includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte solution. The negative electrode plate has a non-faradaic capacitance Cdl nF satisfying 1?Cdl?5. The electrolyte solution includes an additive, and the additive includes a silicon-containing compound. In the present application, by reasonably adjusting the relationship between the non-faradaic capacitance of the negative electrode plate and content of the additive in the electrolyte solution, the secondary battery has characteristics of high capacity and rapid charging.

Abstract: Disclosed are batteries and electrical apparatuses. Non-faradaic capacitance of the negative electrode plate is Cdl nF, the sphericity of the negative active material contained in the negative electrode plate is S, and Cdl and S satisfy 0.5?Cdl×S?5. By adjusting Cdl value and sphericity S, so that they are in the range of 0.5?Cdl×S?5, which can effectively reduce the specific surface area of the negative active material, increase the tap density, so that the negative electrode plate has a high tap density without causing overpressure phenomenon. Furthermore, the mechanical stress experienced by the negative active materials of the negative electrode plate during rolling is minimized, and the reaction area with the electrolyte is minimized, it has good liquid retention properties, thereby avoiding the occurrence of gas generation and swelling, so that the batteries have excellent rate performance and cycle performance.

Abstract: A secondary battery and an electrochemical device are provided. The secondary battery includes a positive electrode plate, a separator, an electrolyte solution, and a negative electrode plate. The negative electrode plate includes a negative electrode current collector, and a negative electrode active material layer disposed on the negative electrode current collector. Non-faradaic electric quantity Q C of the negative electrode plate satisfies: 0.05?Q?2.5, wherein Q=Cdl×?U, Cdl nF is non-faradaic capacitance of the negative electrode plate, and ?U V is potential interval of the negative electrode active material layer.

Abstract: The present invention relates to a preparation method of an edible and biodegradable environmental-friendly tableware, and the present invention provides a preparation method of a natural macromolecule-based edible and degradable tableware, where the principles of endogenous diffusion and polymer crosslinking to prepare an edible tableware such as a straw, a cup and a bowl from a microscopic state. The tableware material of the present invention may degrade rapidly under natural conditions and requires no composting. The tableware prepared by the method of the present invention has an excellent water stability performance. In terms of material acquisition, carrageenan, sodium alginate and other raw materials are widely available and stable, and may constitute a good substitute for grain starch, wood, etc., and the material cost is low.

Abstract: The present invention discloses a gas hydrate-based particulate/waste gas simultaneous removal system and method. R134a can be used to synthesize particulates/coking waste gases into gas hydrate, which can realize the simultaneous removal of particulates/coking waste gases with no pollution and low energy consumption. The system comprises a waste heat recovery device, a gas hydrate primary dust removal tower, a solid-liquid separation primary tower, a gas hydrate secondary dust removal tower, a solid-liquid separation secondary tower, a gas hydrate decomposition pool, a gas-solid separation tower and a low temperature fractionation device. The present invention can achieve the removal of harmful substances such as heavy metals and coking waste gases while removing particulates.

Abstract: The invention discloses a gas hydrate pressure maintaining replacement device and method for in-situ Raman analysis. Comprehensive experiments such as the formation/decomposition/displacement of high-pressure gas hydrates can be realized, and in-situ Raman characterization can be performed. Including reaction kettle system with temperature control unit, pressure control gas supply system, pressure holding system, replacement gas system, sample pre-cooling system, vacuum system and data acquisition and processing system. The device can solve the problem that the Raman peak position of the 512 cage is covered by the Raman peak position of the gas when the high-pressure gas hydrate is characterized in situ in the reaction kettle, at the same time, it solves the problems of sampling difficulties in ex-situ Raman characterization and experimental errors caused by sample transfer.

Abstract: A power calculation method including obtaining a first optical signal and a second optical signal; detecting first optical power of each waveband in the first optical signal and second optical power of each waveband in the second optical signal; calculating, based on the first optical power, a first optical power variation that is of each waveband of the first optical signal and that is used after the first optical signal is transmitted from a transmitting end to a receiving end, and calculating, based on the second optical power, a second optical power variation that is of each waveband of the second optical signal and that is used after the second optical signal is transmitted from the transmitting end to the receiving end; and determining a first compensation value and a second compensation value based on the first optical power variation and the second optical power variation.