Abstract: The present disclosure relates to a method and system for predicting a time-varying principle of waterflooding oil reservoir formation parameters. Firstly, a T2 spectrum-pore size relation model is built according to a measured pore size distribution curve and a measured T2 spectrum. A T2 spectrum of a rock sample at different water injection amounts during a waterflooding physical simulation experiment is acquired. The acquired T2 spectrum at different water injection amounts is then converted into a pore size distribution at different water injection amounts, and a pore network model at different water injection amounts is built with the pore size distribution. Oil-water two-phase flow simulation is performed, and a corresponding oil-water two-phase relative permeability curve of the rock sample at different pore volume (PV) multiples is obtained eventually. The oil-water two-phase relative permeability curve is the formation parameters in the waterflooding oil reservoir.

Abstract: The present disclosure relates to a method and system for predicting a time-varying principle of waterflooding oil reservoir formation parameters. Firstly, a T2 spectrum-pore size relation model is built according to a measured pore size distribution curve and a measured T2 spectrum. A T2 spectrum of a rock sample at different water injection amounts during a waterflooding physical simulation experiment is acquired. The acquired T2 spectrum at different water injection amounts is then converted into a pore size distribution at different water injection amounts, and a pore network model at different water injection amounts is built with the pore size distribution. Oil-water two-phase flow simulation is performed, and a corresponding oil-water two-phase relative permeability curve of the rock sample at different pore volume (PV) multiples is obtained eventually. The oil-water two-phase relative permeability curve is the formation parameters in the waterflooding oil reservoir.

Abstract: The present disclosure relates to a method for determining oil and gas relative permeabilities of a reservoir. The method includes: drilling a cylindrical core from a to-be-tested reservoir; injecting an oil and gas mixture into the cylindrical core through the piston container at a set flow rate by using the relative permeability testing device, and reducing pressures at a control end of the back pressure valve in sequence to obtain experimental values acquired under each pressure at the control end of the back pressure valve; equivalently simulating developing performance of a producing well of the to-be-tested reservoir using a one-dimensional numerical simulation grid model based on current oil and gas phase relative permeability curves, so as to obtain simulation values at different times; constructing an objective function according to the experimental and simulation values; determining whether a value of the objective function reaches a preset target value.

Abstract: The present invention relates to a beverage composition comprising fermented cascara or fermented cascara extract. A further aspect of the invention is a method of preparing a beverage composition. A still further aspect of the invention is the yeast Pichia kluyveri NYSC 5485 (CNCM I-5525).

Abstract: A video caption generating method is provided to a computer device. The method includes encoding a target video by using an encoder of a video caption generating model, to obtain a target visual feature of the target video, decoding the target visual feature by using a basic decoder of the video caption generating model, to obtain a first selection probability corresponding to a candidate word, decoding the target visual feature by using an auxiliary decoder of the video caption generating model, to obtain a second selection probability corresponding to the candidate word, a memory structure of the auxiliary decoder including reference visual context information corresponding to the candidate word, determining a decoded word in the candidate word according to the first selection probability and the second selection probability, and generating a video caption according to decoded word.

Abstract: A method and apparatus for determining an answer to a question are provided.

Abstract: The present invention relates to a method for preparing a comestible product, in particular a fermented beverage containing stevia extract. A further aspect of the invention is a comestible product obtainable by the method of the invention.

Abstract: The present disclosure relates to the technical field of oil-gas field development, and discloses a shale oil fracturing synchronous energizing simulation experimental device and method. The shale oil fracturing synchronous energizing simulation experimental device comprises a liquid supply system, a confining pressure loading system, a fracturing system, an energizing system and a recovery system, wherein the liquid supply system is used for storing fluid and can inject the fluid into the fracturing system; the fracturing system can bear a test piece, receive the fluid injected by the liquid supply system and serve as seepage space of the fluid; the confining pressure loading system is used for providing simulated confining pressure for the test piece; the energizing system is used for simulating an energizing effect on a test piece after fracturing liquid is injected; and the recovery system is used for collecting discharged liquid and separating and metering the discharged liquid.

Abstract: The present disclosure relates to the technical field of oil-gas field development, and discloses a shale oil fracturing synchronous energizing simulation experimental device and method. The shale oil fracturing synchronous energizing simulation experimental device comprises a liquid supply system, a confining pressure loading system, a fracturing system, an energizing system and a recovery system, wherein the liquid supply system is used for storing fluid and can inject the fluid into the fracturing system; the fracturing system can bear a test piece, receive the fluid injected by the liquid supply system and serve as seepage space of the fluid; the confining pressure loading system is used for providing simulated confining pressure for the test piece; the energizing system is used for simulating an energizing effect on a test piece after fracturing liquid is injected; and the recovery system is used for collecting discharged liquid and separating and metering the discharged liquid.

Abstract: A method and an electronic device for power allocation of multi-parallel power electronic transformers, the method including: determining a quantity of conversion stages of the power electronic transformers; obtaining a load ratio-efficiency relationship between the two ports of each conversion stage in turn, performing a curve fitting to obtain a load ratio-efficiency curve of each conversion stage of the power electronic transformers; calculating a load ratio-loss relationship of each conversion stage, based on the load ratio-efficiency curve of each conversion stage; obtaining a multi-parallel minimum-operation-loss power allocation curve of each conversion stage; performing a piecewise curve fitting of the minimum-operation-loss power allocation curve to obtain a multi-parallel optimum power allocation mathematical model of each stage; and determining an optimum power allocation to each port of the multi-parallel power electronic transformers, based on the multi-parallel optimum power allocation mathemati

Abstract: A method and an electronic device for power allocation of multi-parallel power electronic transformers, the method including: determining a quantity of conversion stages of the power electronic transformers; obtaining a load ratio-efficiency relationship between the two ports of each conversion stage in turn, performing a curve fitting to obtain a load ratio-efficiency curve of each conversion stage of the power electronic transformers; calculating a load ratio-loss relationship of each conversion stage, based on the load ratio-efficiency curve of each conversion stage; obtaining a multi-parallel minimum-operation-loss power allocation curve of each conversion stage; performing a piecewise curve fitting of the minimum-operation-loss power allocation curve to obtain a multi-parallel optimum power allocation mathematical model of each stage; and determining an optimum power allocation to each port of the multi-parallel power electronic transformers, based on the multi-parallel optimum power allocation mathemati

Abstract: A video caption generating method is provided to a computer device. The method includes encoding a target video by using an encoder of a video caption generating model, to obtain a target visual feature of the target video, decoding the target visual feature by using a basic decoder of the video caption generating model, to obtain a first selection probability corresponding to a candidate word, decoding the target visual feature by using an auxiliary decoder of the video caption generating model, to obtain a second selection probability corresponding to the candidate word, a memory structure of the auxiliary decoder including reference visual context information corresponding to the candidate word, determining a decoded word in the candidate word according to the first selection probability and the second selection probability, and generating a video caption according to decoded word.

Abstract: The present invention relates to a method for accelerating oxidation of lipids comprising the step of holding a lipid composition in the presence of cumin for a prolonged time at an elevated temperature. Further aspects of the invention are the resulting lipid composition as well as food products such as concentrated seasoning or flavoring products, condiments, sauces, gravies or ready-to-eat food products comprising said lipid composition.

Abstract: This disclosure relates to a soldering system containing a soldering apparatus and a heating apparatus. The soldering apparatus includes a heating plate having a body defining a plurality of first air exits, each first air exit extending through the body of the heating plate and the heating plate being configured to supply hot air through the first air exits; a cover disposed on the heating plate, the cover and the heating plate defining a hot air chamber; a plurality of axially movable positioning shafts extending though the body of the heating plate, in which each shaft has a first end and a second end, the first end is in the hot air chamber, and the second end is outside the hot air chamber; and a conduit attached to the cover, the conduit being configured to supply hot air to the hot air chamber.

Abstract: The present invention relates to a method for accelerating oxidation of lipids comprising the step of holding a lipid composition in the presence of cumin for a prolonged time at an elevated temperature. Further aspects of the invention are the resulting lipid composition as well as food products such as concentrated seasoning or flavoring products, condiments, sauces, gravies or ready-to-eat food products comprising said lipid composition.

Abstract: A solar cell (100) includes a photoelectric conversion layer (120) having a front surface (121) and a back surface (123), a back electrode (110) disposed on the back surface (123) of the photoelectric conversion layer (120), a plurality of electrically conductive fingers (130) disposed on the front surface (121) of the photoelectric conversion layer (120), and a plurality of primary bus bars (140) disposed on the front surface (121) of the photoelectric conversion layer (120). Each primary bus bar (140) is electrically connected to a plurality of electrically conductive fingers (130). The solar cell (100) can include from 4 to 12 primary bus bars (140) on the front surface (121) of the photoelectric conversion layer (120) and the primary bus bars (140) on the front surface (121) of the photoelectric conversion layer (120) have a total surface area of at most about 4 cm2.

Abstract: This disclosure relates to a soldering system containing a soldering apparatus and a heating apparatus. The soldering apparatus includes a heating plate having a body defining a plurality of first air exits, each first air exit extending through the body of the heating plate and the heating plate being configured to supply hot air through the first air exits; a cover disposed on the heating plate, the cover and the heating plate defining a hot air chamber; a plurality of axially movable positioning shafts extending though the body of the heating plate, in which each shaft has a first end and a second end, the first end is in the hot air chamber, and the second end is outside the hot air chamber; and a conduit attached to the cover, the conduit being configured to supply hot air to the hot air chamber.