Abstract: The present disclosure provides a method for predicting a water invasion frontier for a complex well in a bottom-water gas reservoir. The technical solution is as follows: with consideration of forms of different well types and a gravitational pressure drop in production, a coupled permeability of a corresponding well type acting on a gas-water interface under the action of a baffle plate is expressed by using an equivalent percolation resistance method; a productivity of each infinitesimal section of the corresponding well type is calculated; a position of the gas-water interface is calculated with an equivalent permeability and a pseudo-productivity as characteristic parameters; water breakthrough is determined when there is a point over a water avoidance height, and a change in water invasion frontier form may be expressed with water quality point position data at this time.

Abstract: According to the embodiments provided herein, a photovoltaic device can include a buffer layer adjacent to an absorber layer doped p-type with a group V dopant. The buffer layer can have a plurality of layers compatible with group V dopants.

Abstract: According to the embodiments provided herein, a method for forming a photovoltaic device can include depositing a plurality of semiconductor layers. The plurality of semiconductor layers can include a doped layer that is doped with a group V dopant. The doped layer can include cadmium selenide or cadmium telluride. The method can include annealing the plurality of semiconductor layers to form an absorber layer.

Abstract: A virtual conference meeting server includes at least one processor and at least one memory storing program code performing operations that include to assign an artificial intelligence (AI) meeting agent to analyze content of a media stream of a monitored meeting. The operation generate a meeting content relevance score based on the analysis by the AI meeting agent of the content of the media stream of the monitored meeting. When the meeting content relevance score satisfies a notification rule, the operations generate a meeting relevance notification to a device of a principal which is not presently joined in to receive the media stream of the monitored meeting. Responsive to an instruction received from the device of the principal or an automated switching rule, the operations switch the device of the principal from another concurrently occurring meeting to join the monitored meeting and receive the media stream of the monitored meeting.

Abstract: An atomizer, comprising: a housing, an e-liquid storage cavity being provided in the housing; an atomization assembly, provided in the housing and provided with an air exchange channel, the air exchange channel being communicated with the outside and the e-liquid storage cavity, and the e-liquid storage cavity being used for storing e-liquid supplied to the atomization assembly; and an e-liquid separation piece, having air permeability and used for blocking the air exchange channel to absorb the e-liquid from the e-liquid storage cavity. External air can enter the e-liquid storage cavity by means of the air exchange channel and the e-liquid separation piece.

Abstract: An atomization element and an electronic cigarette. The atomization element comprises a porous ceramic portion and a porous metal portion contacting the porous ceramic portion; at least some holes of the porous ceramic portion is communicated with holes of the porous metal portion; the porous metal portion has a thickness of not less than 30 ?m. The atomization element can sufficiently atomize an e-liquid, thereby improving the taste of aerosol.

Abstract: Structures and methods for manufacturing photovoltaic devices by forming perovskite layers and perovskite precursor layers using vapor transport deposition (VTD) are described.

Abstract: An electronic cigarette and a heating assembly and a heating member thereof. The heating assembly comprises a porous member for absorbing an e-liquid and at least one heating member for heating and atomizing the e-liquid absorbed by the porous member. The at least one heating member comprises an elongated sheet-shaped heating portion. At least part of the sheet-shaped heating portion is partially embedded in the porous member. The porous member comprises an atomization surface corresponding to the at least part of the sheet-shaped heating portion. The at least part of the sheet-shaped heating portion has a through hole for adjusting resistance distribution.

Abstract: An atomization element (100) and an electronic cigarette. The atomization element (100) comprises a porous ceramic portion (101) and a porous metal portion (102) contacting the porous ceramic portion (101); at least some holes of the porous ceramic portion (101) is communicated with holes of the porous metal portion (102); the porous metal portion (102) has a thickness of not less than 30 ?m. The atomization element (100) can sufficiently atomize an e-liquid, thereby improving the taste of aerosol.

Abstract: An electronic cigarette and a heating assembly thereof. The heating assembly comprises a porous member for absorbing an e-liquid and at least one heating member for heating and atomizing the e-liquid absorbed by the porous member. The at least one heating member comprises an elongated sheet-shaped heating portion. The sheet-shaped heating portion comprises a heating grid. At least part of the heating grid is partially embedded in the porous member. The porous member comprises an atomization surface corresponding to the at least part of the heating grid.

Abstract: The present invention relates to an electronic cigarette and a heating assembly thereof. The heating assembly comprise: a porous member for absorbing an e-liquid and at least one heating member for heating and atomizing the e-liquid absorbed by the porous member. The at least one heating member comprises an elongated sheet-shaped heating portion. At least part of the sheet-shaped heating portion is partially embedded in the porous member. The porous member comprises an atomization surface corresponding to the at least part of the sheet-shaped heating portion. In the present invention, a heating member of a heating assembly comprises a sheet-shaped heating portion embedded in a porous member, such that a majority of a surface of the sheet-shaped heating portion is in contact with the porous member, thereby improving heat dissipation efficiency, and ensuring secure connection.

Abstract: According to the embodiments provided herein, a photovoltaic device can include a buffer layer adjacent to an absorber layer doped p-type with a group V dopant. The buffer layer can have a plurality of layers compatible with group V dopants.

Abstract: Structures and methods for manufacturing photovoltaic devices by forming perovskite layers and perovskite precursor layers using vapor transport deposition (VTD) are described.

Abstract: The present disclosure provides a method for predicting a water invasion frontier for a complex well in a bottom-water gas reservoir. The technical solution is as follows: with consideration of forms of different well types and a gravitational pressure drop in production, a coupled permeability of a corresponding well type acting on a gas-water interface under the action of a baffle plate is expressed by using an equivalent percolation resistance method; a productivity of each infinitesimal section of the corresponding well type is calculated; a position of the gas-water interface is calculated with an equivalent permeability and a pseudo-productivity as characteristic parameters; water breakthrough is determined when there is a point over a water avoidance height, and a change in water invasion frontier form may be expressed with water quality point position data at this time.

Abstract: A method for preparing tantalum-tungsten alloy powder includes the following steps: providing a tantalum-tungsten alloy ingot; repeatedly smelting the tantalum-tungsten alloy ingot; forging a product of the previous step; placing the product of the previous step in a hydrogen atmosphere to perform a hydrogenation heat treatment; mechanically crushing the product of the previous step to obtain a coarse powder; sieving, from the coarse powder, a powder having a particle size ranging from a ?m to b ?m, wherein a=10-20 and b=50-60; performing dehydrogenation heat treatment on the product of the previous step under vacuum; adding a magnesium powder to the product of the previous step to perform a deoxygenation heat treatment; and performing plasma spheroidization treatment on the product of the previous step such that the sphericity of the powder reaches more than 99%.

Abstract: The present invention relates to a photo-induced cationic polymerized pure vegetable oil-based polymer and a preparation method and use thereof. The preparation method comprises the following steps: mixing a dry oil, an epoxy vegetable oil and an initiator uniformly, irradiating to initiate a photo-curing reaction, and then placing at ambient temperature, and continuing to a heat-curing reaction so as to obtain a photo-induced cationic polymerized pure vegetable oil-based polymer. In the present invention, vegetable oil resources which are low in price, widespread, and easy to regenerate are used to prepare the pure vegetable oil-based polymers instead of the fossil-derived monomers completely, thereby achieving the efficient use of vegetable oils. In the present invention, an unconventional photo-induced heat frontal polymerization technology is used to prepare the pure vegetable oil-based polymer, thereby achieving a photo-thermal dual curing reaction of a vegetable oil system without heating.

Abstract: A heating body includes: a first heat-conducting substrate, a second heat-conducting substrate, and a heating element. A side of the first heat-conducting substrate defines a recess. The second heat-conducting substrate and the first heat-conducting substrate cooperatively forms a substrate having a receiving space. The heating element is received in the receiving space and comprising an electrically conductive body and an insulating layer wrapping an outer surface of the electrically conductive body, such that the heating element is insulated from the substrate. The heating body has a simple structure and can be easily assembled. Heat generated by the heating body may be distributed more uniformly.

Abstract: The present disclosure provides an electronic cigarette atomizer, including an atomization assembly and a liquid reservoir engaging with the atomization assembly; the liquid reservoir includes a liquid storage cavity; wherein the atomization assembly includes a lower holder, an upper holder installed on the lower holder, and a heating assembly clamped between the lower and the upper holders; the heating assembly includes a porous body and at least one heater engaging with the porous body, and the porous body has an atomizing surface and a liquid-absorbing surface; and the liquid-absorbing surface communicates with the liquid storage cavity, and an atomization cavity is formed between the atomizing surface and the lower holder. In the present disclosure, the heating assembly is a porous body and is clamped by the upper holder and the lower holder, thus, the structure is stable and the assembly of the heating assembly is facilitated.

Abstract: The present disclosure provides an electronic cigarette atomizer, including an atomization assembly and a liquid reservoir engaging with the atomization assembly; the liquid reservoir includes a liquid storage cavity; wherein the atomization assembly includes a lower holder, an upper holder installed on the lower holder, and a heating assembly clamped between the lower and the upper holders; the heating assembly includes a porous body and at least one heater engaging with the porous body, and the porous body has an atomizing surface and a liquid-absorbing surface; and the liquid-absorbing surface communicates with the liquid storage cavity, and an atomization cavity is formed between the atomizing surface and the lower holder. In the present disclosure, the heating assembly is a porous body and is clamped by the upper holder and the lower holder, thus, the structure is stable and the assembly of the heating assembly is facilitated.

Abstract: The present disclosure provides an electronic cigarette atomizer, including an atomization assembly and a liquid reservoir engaging with the atomization assembly; the liquid reservoir includes a liquid storage cavity; wherein the atomization assembly includes a lower holder, an upper holder installed on the lower holder, and a heating assembly clamped between the lower and the upper holders; the heating assembly includes a porous body and at least one heater engaging with the porous body, and the porous body has an atomizing surface and a liquid-absorbing surface; and the liquid-absorbing surface communicates with the liquid storage cavity, and an atomization cavity is formed between the atomizing surface and the lower holder. In the present disclosure, the heating assembly is a porous body and is clamped by the upper holder and the lower holder, thus, the structure is stable and the assembly of the heating assembly is facilitated.