Abstract: The present disclosure relates to a positive electrode material for a lithium ion battery and its preparation. The positive electrode material in accordance with the present disclosure has an intrinsic specific surface area of 5-13 m2/g. The positive electrode material in accordance with the present disclosure has an intrinsic specific surface area and an intrinsic pore size within the required ranges. In this regard, the positive electrode material in accordance with the present disclosure has excellent particle strength, excellent Li ion transference ability, and good resistance to electrolyte erosion. When used in lithium batteries, it may impart the batteries with excellent rate performance and cycle performance. The present disclosure also relates to a method for preparing the positive electrode material.

Abstract: The present invention discloses a perceptual representation learning method for protein conformations based on a pre-trained language model, including: obtaining a protein made up of an amino acid sequence, building different data sets according to protein conformations, and defining a prompt for each type of protein conformation; building, based on a pre-trained language model, a representation learning module for fusing an embedding representation of each type of the prompt into an embedding representation of the protein, so as to obtain a protein embedding representation under a prompt identifier; building a task module for performing task prediction on a task corresponding to each type of protein conformation based on the protein embedding representation under the prompt identifier; building a loss function for each type of task based on a task prediction result and a tag, and updating model parameters of the representation learning module and the task module in combination with loss functions of all type

Abstract: A positive electrode material, a preparation method therefor, and an application thereof are disclosed. The cathode material is composed of secondary particles agglomerated by primary particles; wherein individual secondary particle contains an inner core structure, a middle layer, and a shell layer, in this order, along a direction from a center to a surface of the secondary particle; wherein the middle layer is distributed in a circular ring shape; and wherein the secondary particle has a structure of close packing of an inner core structure, loose and porous middle layer, and close packing of the shell layer.

Abstract: An optical fiber sensing system for temperature and salinity synchronous measurement is provided, which includes a broad-spectrum light source, an optical fiber circulator, a coupler, a first interferometer, a second interferometer, a third interferometer and a spectrometer; the first interferometer is insensitive to temperature and salinity; the second interferometer is sensitive to both temperature and salinity, and the third interferometer is only sensitive to temperature; light emitted by the broad-spectrum light source passes through the optical fiber circulator and enters the first interferometer; reflected light of the first interferometer passes through the optical fiber circulator and the coupler sequentially, and then enters the second and the third interferometers respectively; the reflected light of the second and the third interferometers enters the spectrometer after passing through the coupler; the temperature and the salinity to be measured are simultaneously obtained by performing spectral an

Abstract: The present disclosure provides a dental bleaching guide plate, including a first plate and a second plate, wherein the first plate and the second plate are abutted to form an enclosed deep groove structure, the first plate is provided with a guide hole, a spacing between two opposite side surfaces of the first plate and the second plate is greater than an outer diameter of a neck of a tooth, and there is a gap between the side surfaces of the first plate and the second plate and side surfaces of the tooth. The guide plate can be sleeved onto an exterior of a tooth to inhibit a bleaching agent from coming into contact with other teeth. In addition, a range and an amount of applying a bleaching agent can be accurately controlled, partitioned coloration and bleaching can be implemented, and an administration position can be accurately located.

Abstract: A method for heating a liquid glass channel of a glass fiber tank furnace. The method comprises: passing oxygen gas and a fuel, via a burner (1), into a channel space (3) for combustion to heat the channel space (3) and a liquid glass (2), wherein the flow rate of the fuel is VF and the flow rate of the oxygen gas is VOX such that the relative velocity difference D=(VF?VOX)VF. The temperature of the channel is 0-1500° C., and the relative velocity difference D is kept to 25% or more. A pure oxygen combustion method is used for heating a tank furnace channel to reduce waste gas emission and heat loss, thereby achieving the goals of energy conservation, reduced carbon emissions, and improve environment friendliness. The fuel flow rate, relative velocity difference, and related parameters can be controlled according to the temperature of the channel, providing excellent uniformity and accurate control of the temperature of the channel.

Abstract: In an aspect, a method of forming a coating on a busbar comprises cold spraying a powder comprising a plurality of metal particles onto the busbar at a velocity sufficiently high to cause the plurality of metal particles to deform upon contact with the busbar thereby forming the coating on the busbar; wherein the plurality of metal particles comprises greater than or equal to 50 weight percent of at least one of nickel, tin, silver, zinc, or copper based on the total weight of the metal particles; and wherein the coating has an average thickness of greater than or equal to 10 micrometers. In another aspect, a coated busbar is formed by cold spraying.

Abstract: A glass tank furnace having a length to width ratio of no less than 2.3 and no greater than 2.8. The glass tank furnace includes one or more weirs and a plurality of bubbling tubes provided on a bottom of the glass tank furnace. The plurality of bubbling tubes are disposed before, behind, or on the weirs.

Abstract: An application of a substituted crotonamide, in particular being an application of (E)-N-(3-cyano-7-ethoxyl-4-(3-ethynylphenylamino)quinoline-6-yl)-4-(dimethylamino)but-2-enamide and a pharmaceutically acceptable salt and solvate thereof in the preparation of a drug for treating cancer mediated by a rare EGFR mutation.

Abstract: A cover plate structure for a glass fiber tank furnace forehearth includes chest wall bricks at two sides of the forehearth, cover plate bricks each spanning between a top end of at least one of the chest wall bricks at one of the two sides of the forehearth and a top end of at least one of the chest wall bricks at another one of the two sides of the forehearth, a thermal insulation layer covering outer surfaces of the cover plate bricks and the chest wall bricks, and a gap-covering brick fixed between the cover plate bricks and the thermal insulation layer and covering a gap between adjacent ones of the cover plate bricks.

Abstract: A method for heating a liquid glass channel of a glass fiber tank furnace. The method comprises: passing oxygen gas and a fuel, via a burner (1), into a channel space (3) for combustion to heat the channel space (3) and a liquid glass (2), wherein the flow rate of the fuel is VF and the flow rate of the oxygen gas is VOX such that the relative velocity difference D=(VF?VOX)/VF. The temperature of the channel is 0-1500° C., and the relative velocity difference D is kept to 25% or more. A pure oxygen combustion method is used for heating a tank furnace channel to reduce waste gas emission and heat loss, thereby achieving the goals of energy conservation, reduced carbon emissions, and improve environment friendliness. The fuel flow rate, relative velocity difference, and related parameters can be controlled according to the temperature of the channel, providing excellent uniformity and accurate control of the temperature of the channel.

Abstract: A glass tank furnace having a high melting rate. The ratio of the length of the glass tank furnace to the width thereof is 2.3 to 2.8. By reducing the area of a furnace and optimizing the length-to-width ratio thereof, the heat loss of the tank furnace is reduced. By designing an appropriate liquid glass tank depth, the temperature of a furnace bottom is improved and the quality of the liquid glass is guaranteed. By providing pure oxygen burners (3) and electrodes (7), sufficient energy is guaranteed, the melting capability and the heating efficiency of the tank furnace are improved, and energy consumption and the discharge amount of carbon dioxide are significantly reduced. Weirs (5) arranged on the furnace bottom improve the outlet temperature of the liquid glass, reduce energy consumption, lower the temperature of the furnace bottom in the electrode area, prolong the service life of the furnace bottom, and guarantee an increased proportion of auxiliary power.

Abstract: The present invention provides a high-modulus glass fiber composition, a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 55-64% SiO2, 13-24% Al2O3, 0.1-6% Y2O3, 3.4-10.9% CaO, 8-14% MgO, lower than 22% CaO+MgO+SrO, lower than 2% Li2O+Na2O+K2O, lower than 2% TiO2, lower than 1.5% Fe2O3, 0-1.2% La2O3, wherein the range of the weight percentage ratio C1=(Li2O+Na2O+K2O)/(Y2O3+La2O3) is greater than 0.26. Said composition can significantly increase the glass elastic modulus, effectively inhibit the crystallization tendency of glass, decrease the liquidus temperature, secure a desirable temperature range (?T) for fiber formation and enhance the fining of molten glass, thus making it particularly suitable for production of high-modulus glass fiber with refractory-lined furnaces.

Abstract: Provided are a high-performance glass fiber composition, and a glass fiber and composite material thereof. The content, given in weight percentage, of each component of the glass fibre composition is as follows: 52-64% of SiO2, 12-24% of Al2O3, 0.05-8% of Y2O3+La2O3+Gd2O3, less than 2.5% of Li2O+Na2O+K2O, more than 1% of K2O, 10-24% of CaO+MgO+SrO, 2-14% of CaO, less than 13% of MgO, less than 2% of TiO2, and less than 1.5% of Fe2O3. The composition significantly increases the mechanical strength and the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallization rate, the surface tension and the bubble rate of glass. The composition is particularly suitable for the tank furnace production of a high-strength high-modulus glass fiber having a low bubble rate.

Abstract: Provided are a high performance glass fiber composition, and a glass fiber and a composite material thereof. The content, given in weight percentage, of each component of the glass fiber composition is as follows: 52-67% of SiO2, 12-24% of Al2O3, 0.05-4.5% of Sm2O3+Gd2O3, less than 2% of Li2O+Na2O+K2O, 10-24% of CaO+MgO+SrO, less than 16% of CaO, less than 13% of MgO, less than 3% of TiO2, and less than 1.5% of Fe2O3. The composition significantly improves the mechanical properties and the thermal stability of glass, significantly reduces the liquidus temperature and forming temperature of glass, and under equal conditions, significantly reduces the crystallisation rate of glass. The composition is particularly suitable for the tank furnace production of a high performance glass fiber having excellent thermal stability.

Abstract: The present invention provides a glass fiber composition, a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 53-64% SiO2, greater than 19% and lower than 25% Al2O3, 0.05-7% Y2O3+La2O3+Gd2O3, not greater than 1% Li2O+Na2O+K2O, 10-24% CaO+MgO+SrO, 1.5-12% CaO, lower than 2% TiO2, lower than 1.5% Fe2O3.

Abstract: A high-modulus glass fiber composition, and a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components in weight percentage: SiO2 55.7 to 58.9%, Al2O3 15 to 19.9%, Y2O3 0.1 to 4.3%, La2O3 less than or equal to 1.5%, CeO2 less than or equal to 1.2%, CaO 6 to 10%, MgO 9.05 to 9.95%, SrO less than or equal to 2%, Li2O+Na2O+K2O less than or equal to 0.99%, Li2O less than or equal to 0.65%, Fe2O3 less than 1%, TiO2 0.1 to 1.5%; wherein, the range of the weight percentage ratio C1=Y2O3/(Y2O3+La2O3+CeO2) is greater than 0.6. The composition can greatly improve the elastic modulus of glass, significantly reduce liquidus temperature and forming temperature of the glass, greatly reduce the crystallization rate of molten glass and bubble amount under the same conditions, and therefore is more suitable for large-scale tank furnace production of high-modulus fiberglass with low bubble amount.

Abstract: The present invention provides a high-modulus glass fiber composition, a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 55-64% SiO2, 13-24% Al2O3, 0.1-6% Y2O3, 3.4-10.9% CaO, 8-14% MgO, lower than 22% CaO+MgO+SrO, lower than 2% Li2O+Na2O+K2O, lower than 2% TiO2, lower than 1.5% Fe2O3, 0-1.2% La2O3, wherein the range of the weight percentage ratio C1=(Li2O+Na2O+K2O)/(Y2O3+La2O3) is greater than 0.26. Said composition can significantly increase the glass elastic modulus, effectively inhibit the crystallization tendency of glass, decrease the liquidus temperature, secure a desirable temperature range (?T) for fiber formation and enhance the fining of molten glass, thus making it particularly suitable for production of high-modulus glass fiber with refractory-lined furnaces.

Abstract: A high modulus glass fiber composition, and a glass fiber and a composite material thereof. The glass fiber composition comprises the following components expressed as percentage by weight: 53-68% of SiO2, 13-24.5% of Al2O3, 0.1-8% of Y2O3+La2O3, less than 1.8% of La2O3, 10-23% of CaO+MgO+SrO, less than 2% of Li2O+Na2O+K2O, and less than 1.5% of Fe2O3, and the range of a weight percentage ratio C1 is more than 0.5, wherein C1=Y2O3/(Y2O3+La2O3). The composition significantly increases the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallization rate and the bubble rate of glass. The composition effectively improves the material properties of glass, and is particularly suitable for the tank furnace production of a high modulus glass fiber having a low bubble rate.

Abstract: Provided are a high-performance glass fiber composition, and a glass fiber and composite material thereof. The content, given in weight percentage, of each component of the glass fibre composition is as follows: 52-64% of SiO2, 12-24% of Al2O3, 0.05-8% of Y2O3+La2O3+Gd2O3, less than 2.5% of Li2O+Na2O+K2O, more than 1% of K2O, 10-24% of CaO+MgO+SrO, 2-14% of CaO, less than 13% of MgO, less than 2% of TiO2, and less than 1.5% of Fe2O3. The composition significantly increases the mechanical strength and the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallization rate, the surface tension and the bubble rate of glass. The composition is particularly suitable for the tank furnace production of a high-strength high-modulus glass fiber having a low bubble rate.