Abstract: A snowthrower includes a shaft configured to rotate around a first axis, a first auger connected to the shaft, an intake housing configured to receive at least a portion of the shaft, and a scraping assembly mounted to the intake housing. The scraping assembly includes a bottom edge disposed frontward of the first axis.

Abstract: Provided herein are methods, systems, and compositions for seamless nucleic acid assembly. Methods, systems, and compositions as provided herein provide for efficient assembly of nucleic acids without primer removal. Methods, systems, and compositions for seamless nucleic acid assembly comprise use of an endonuclease or exonuclease, optionally in conjunction with additional enzymes to assemble nucleic acids or polynucleotides.

Abstract: A soft-switching Phase-Shift Full-Bridge (PSFB) converter system may include a transformer comprising a primary side and a secondary side. Phase-leading circuitry and phase-lagging circuitry may be located on the primary side of the transformer. The phase leading a phase lagging circuitry may include one or more bridge switches. The system may further include clamping circuitry coupled to the secondary side of the transformer. The clamping circuitry configurable to, when in an active clamping mode, short the secondary side of the transformer. An inductance may be included on the primary side of the transformer to collect and store energy from an input source when the secondary side of the transformer is shorted. The energy stored in the inductance may be used to enable soft-switching of the bridge switches in the phase-lagging circuitry during a dead time or a circulating time of the bridge switches in the phase-leading circuitry.

Abstract: A charging circuit can include: a first module having a plurality of power transistors, and being coupled between a first port and a reference ground; a second module having a plurality of power transistors, and being coupled between a second port and the reference ground; at least one inductor coupled between the first module and the second module; and where at least one of the first module and the second module forms a multi-level converter with the at least one inductor.

Abstract: Provided area hydrophobic and self-cleaning resin slurry, and a hydrophobic and self-cleaning resin dental material and use thereof, which relate to the technical field of dental materials. In the disclosure, the hydrophobic and self-cleaning resin slurry includes the following raw materials: a dimethacrylate monomer, triethylene glycol dimethacrylate, perfluoroalkyl acrylate, a diluent, nano-silica, ?-methacryloxypropyltrimethoxysilane, camphorquinone, and a photo-curing accelerator.

Abstract: Disclosed is a calculation method for a mobile fluid saturation after reservoir fracturing based on netting analysis, including: performing a fracturing experiment and micro-computed tomography (CT) experiment designs before and after fracturing; dividing a pore development area and a dense area; comparing micro-CT scanning experimental images of the same reservoir core sample before and after fracturing, and dividing a fracture network formed after fracturing; analyzing the propagation of fracturing fractures by netting analysis; determining a porosity of fracturing reconstruction; further determining a mobile fluid saturation after fracturing; and combining with a logging curve to realize the continuous calculation of mobile fluid saturation after fracturing.

Abstract: A server device provides a social media platform. The server device includes one or more processors configured to execute instructions stored in associated memory to send instructions to a client device to cause the client device to display a graphical user interface (GUI) of the social media platform, receive at least one image of a face of a user of the client device and a selection of at least one predetermined style via the GUI, using the at least one image and the at least one predetermined style as input, generate a plurality of artificial intelligence (AI) profile pictures via an AI model, and send the plurality of AI profile pictures to the client device.

Abstract: Disclosed is a calculation method for a mobile fluid saturation after reservoir fracturing based on netting analysis, including: performing a fracturing experiment and micro-computed tomography (CT) experiment designs before and after fracturing; dividing a pore development area and a dense area; comparing micro-CT scanning experimental images of the same reservoir core sample before and after fracturing, and dividing a fracture network formed after fracturing; analyzing the propagation of fracturing fractures by netting analysis; determining a porosity of fracturing reconstruction; further determining a mobile fluid saturation after fracturing; and combining with a logging curve to realize the continuous calculation of mobile fluid saturation after fracturing.

Abstract: A multi-level converter can include: a switch capacitor circuit having M flying capacitors and 2*(M+1) transistors, where M is a positive integer; an inductive element; a balance circuit coupled to a common node of the switch capacitor circuit and the inductive element; and where the balance sub-circuit includes at least one balance sub-circuit, a balance switch, and a balance capacitor, and where the flying capacitor and the balance capacitor are coupled to each other in one of series and parallel connections by controlling the balance switch to selectively to be turned on and off.

Abstract: A multi-level converter can include: a switch capacitor circuit having M flying capacitors and 2*(M+1) transistors, where M is a positive integer; an inductive element; a balance circuit coupled to a common node of the switch capacitor circuit and the inductive element, and including a balance switch and a balance capacitor; and where after a voltage of the balance capacitor is adjusted to a preset value, the flying capacitor and the flying capacitor are coupled to each other in one of series and parallel connections by controlling the balance switch to be selectively turned on and off.

Abstract: The present disclosure relates to systems and techniques for developing APIs that utilize multiple pre-existing APIs. The present disclosure also relates to a user interface that allows for chaining APIs together as a function of multiple pre-existing APIs. The present disclosure also relates to security and authorization of a user to execute one or more APIs as part of an API chain.

Abstract: The invention provides a method and a system for early warning of dendrite formation in a lithium battery. The method includes acquiring real-time operating condition information and electrochemical parameters of the lithium battery; performing a computational simulation based on the real-time operating condition information and the electrochemical parameters through an electrochemical model, and obtaining by analysis a deposition result of the lithium battery; and using the deposition result obtained through electrochemical model simulation, providing early warning for the dendrite formation in the lithium battery. The invention avoids the growth of dendrites of the lithium battery by providing early warning and simulation for dendrite formation, thereby protecting the safety of the lithium battery system.

Abstract: The invention provides a method and a system for early warning of dendrite growth in a lithium battery. The method includes simulating the lithium battery in real time through an electrochemical model to judge whether the lithium battery generates lithium dendrites; simulating a growth trend of the lithium dendrites when the lithium battery is determined to generate the lithium dendrites; and judging and providing early warning of the dendrite growth in the lithium battery based on the growth trend of the lithium dendrites obtained through simulation. The invention prevents the growth of dendrites of the lithium battery by carrying out early warning and simulation for dendrite growth, thereby protecting the safety of the lithium battery system.

Abstract: A method for calculating a terminal voltage of a lithium battery based on an electrochemical model, an apparatus, and a medium are provided. The method includes: constructing the electrochemical model of the lithium battery, and dividing the lithium-ion battery into three domains comprising an anode domain, a separator domain, and a cathode domain; numerically simulating the electrochemical model in the three domains respectively using the Chebyshev spectral method, and respectively obtaining distribution data of a liquid-phase potential, overpotential, and open-circuit voltage of the anode and the cathode; obtaining solid-phase potential distribution data of the anode and the cathode, based on discrete data of the liquid-phase potential, overpotential, and open-circuit voltage of the anode and the cathode; and obtaining the terminal voltage of the lithium battery based on the solid-phase potential distribution data of the anode and cathode.

Abstract: Disclosed herein are methods for the generation of highly accurate oligonucleic acid libraries encoding for predetermined variants of a nucleic acid sequence. The degree of variation may be complete, resulting in a saturated variant library, or less than complete, resulting in a selective library of variants. The variant oligonucleic acid libraries described herein may designed for further processing by transcription or translation. The variant oligonucleic acid libraries described herein may be designed to generate variant RNA, DNA and/or protein populations. Further provided herein are method for identifying variant species with increased or decreased activities, with applications in regulating biological functions and the design of therapeutics for treatment or reduction of disease.

Abstract: The present disclosure relates to systems and techniques for developing APIs that utilize multiple pre-existing APIs. The present disclosure also relates to a user interface that allows for chaining APIs together as a function of multiple pre-existing APIs. The present disclosure also relates to security and authorization of a user to execute one or more APIs as part of an API chain.

Abstract: A soft-switching Phase-Shift Full-Bridge (PSFB) converter system may include a transformer comprising a primary side and a secondary side. Phase-leading circuitry and phase-lagging circuitry may be located on the primary side of the transformer. The phase leading a phase lagging circuitry may include one or more bridge switches. The system may further include clamping circuitry coupled to the secondary side of the transformer. The clamping circuitry configurable to, when in an active clamping mode, short the secondary side of the transformer. An inductance may be included on the primary side of the transformer to collect and store energy from an input source when the secondary side of the transformer is shorted. The energy stored in the inductance may be used to enable soft-switching of the bridge switches in the phase-lagging circuitry during a dead time or a circulating time of the bridge switches in the phase-leading circuitry.

Abstract: The invention discloses a method for step parameter identification based on an electrochemical model, including: identifying a first type of electrochemical parameters through a reduced-order electrochemical model by utilizing different preset charge-discharge rate data; determining a first type of target electrochemical parameters identified by the reduced-order electrochemical model through extrapolation; the first type of target electrochemical parameters including an approximate value of the first type of electrochemical parameters or the first type of electrochemical parameters at a specific rate; identifying the first type of electrochemical parameters, which includes solid-phase lithium concentration and exchange current, through a full-order electrochemical model by taking the first type of target electrochemical parameters as actual values of the first type of electrochemical parameters of the full-order electrochemical model; and identifying a second type of electrochemical parameters, which include

Abstract: The invention provides a method and system for decoupling electric field of electrochemical model based on a parallel targeting method. The method includes selecting a negative or positive electrode region as a calculation region; selecting a solid or liquid phase current as an observed quantity, and a solid and liquid phase potential as a costate variable; inserting nodes between two endpoints of the calculation region, and determining a target value of the observed quantity of each node; constructing N calculation units; respectively performing a target shooting on the N calculation units; and determining whether a distance between the target shooting value of the observed quantity of the end point of each calculation unit and the target value of the observed quantity of the node corresponding to the end point of the calculation unit is within a preset range.

Abstract: Provided herein are compositions, methods and systems relating to libraries of polynucleotides such that the libraries allow for accurate and efficient hybridization after binding to target sequences. Further provided herein are probes, blockers, additives, buffers, and methods that result in improved hybridization. Such compositions and methods are useful for improvement of Next Generation Sequencing applications, such as reducing off-target binding or reducing workflow times.