Abstract: A method for preparing an electron donor biofilm carrier includes proportioning organic polymer basic raw material and functional modifiers in a range of set-point, mixing the materials, feeding the mixtures into a screw extruder, processing them into a bar-type material, and then cut the bar-type material into granules with the cutting machine, and feeding the granules into the screw extruder, processing them into pipes of various shapes according to the selected screw extruder heads, and then cutting the pipes according to the required size. The electron donor biofilm carrier is mainly used in anaerobic or anoxic suspended carrier biofilm technologies. Electron donors with a standard electrode potential below 100 Mv are used as the functional material for preparation of electron donor biofilm carrier.

Abstract: A mapping correspondence between memory addresses and request counts and a cache line flusher are provided, enabling selective cache flushing for persistent memory in a computing system to optimize write performance thereof. Random writes from cache memory to persistent memory are prevented from magnifying inherent phenomena of write amplification, enabling computing systems to implement persistent memory as random-access memory, at least in part. Conventional cache replacement policies may remain implemented in a computing system, but may be effectively overridden by operations of a cache line flusher according to example embodiments of the present disclosure preventing conventional cache replacement policies from being triggered. Implementations of the present disclosure may avoid becoming part of the critical path of a set of computer-executable instructions being executed by a client of cache memory, minimizing additional computation overhead in the critical path.

Abstract: Techniques are described for a multiple-phase process that uses machine learning (ML) models to produce a texturized version of an input image. During a first phase, using a pix2pix-based ML model, an automatically-generated image that depicts structured texture is generated based on an input image that visually identifies a plurality of image areas for the structured texture. During a second phase, a neural style transfer-based ML model is used to apply the style of a style image (e.g., a target image from the training dataset of the pix2pix-based ML model) to the texture image generated at the first phase (the content image) to produce a modified texture image. According to an embodiment, during a third phase, the generated texture image produced at the first phase and the modified texture image produced at the second phase are combined to produce a structured texture image with a moderated amount of detail.

Abstract: A refrigerating apparatus applied to a refrigerator is disclosed. The refrigerating apparatus includes a refrigerant, a depressurization gas, an evaporator, a condenser, a first connecting pipe, a second connecting pipe, a third connecting pipe, a blower device and a refrigerator body. The evaporator is provided with an inlet and an outlet; the condenser is provided with a condensation cavity, a gas inlet, a gas outlet and a liquid outlet; a molecular sieve membrane is disposed in the condensation cavity; one end of the first connecting pipe is connected to the outlet and the other end to the gas inlet; one end of the second connecting pipe is connected to the liquid outlet and the other end to the inlet; one end of the third connecting pipe is connected to the gas outlet and the other end to the inlet.

Abstract: A semiconductor device with an isolation structure and a method of fabricating the same are disclosed. The semiconductor device includes first and second fin structures disposed on a substrate and first and second pairs of gate structures disposed on the first and second fin structures. The first end surfaces of the first pair of gate structures face second end surfaces of the second pair of gate structure. The first and second end surfaces of the first and second pair of gate structures are in physical contact with first and second sidewalls of the isolation structure, respectively. The semiconductor device further includes an isolation structure interposed between the first and second pairs of gate structures. An aspect ratio of the isolation structure is smaller than a combined aspect ratio of the first pair of gate structures.

Abstract: A key-value store is provided, implementing multiple-tiered sorted data structures in memory and storage, including concurrent write buffers in memory, and page-level consolidation of updates on storage, where pages are trivially translated in physical-to-virtual address mapping. The key-value store is built on an indexed sorted data structure on storage, occupying much less storage space and incurring much less disk activity in consolidating updates than a conventional log-structured merge tree organized into files. Concurrent write buffers operate concurrently and independently so that data is committed from memory to storage in an efficient manner, while maintaining chronological sequence of delta pages. Trivial mapping allows mappings of a number of physical pages to be omitted, enabling page mapping tables to occupy less storage space, and simplifying processing workload of read operation retrievals from storage.

Abstract: The present disclosure discloses a nano-separation refrigeration system and discloses a refrigeration circulation method, wherein the nano-separation refrigeration system includes an evaporator provided with an inlet and an outlet; a condenser provided with a condensation cavity, a gas inlet, a gas outlet, and a liquid outlet, wherein a molecular sieve membrane is disposed in the condensation cavity between the gas inlet and the gas outlet, and the molecular sieve membrane is configured to separate a mixed gas; a first connecting pipe having one end connected to the outlet and the other end to the gas inlet; a second connecting pipe having one end connected to the liquid outlet and the other end to the inlet; a third connecting pipe having one end connected to the gas outlet and the other end to the inlet.

Abstract: A refrigerating apparatus applied to a refrigerator is disclosed. The refrigerating apparatus includes a refrigerant, a depressurization gas, an evaporator, a condenser, a first connecting pipe, a second connecting pipe, a third connecting pipe, a blower device and a refrigerator body. The evaporator is provided with an inlet and an outlet; the condenser is provided with a condensation cavity, a gas inlet, a gas outlet and a liquid outlet; a molecular sieve membrane is disposed in the condensation cavity; one end of the first connecting pipe is connected to the outlet and the other end to the gas inlet; one end of the second connecting pipe is connected to the liquid outlet and the other end to the inlet; one end of the third connecting pipe is connected to the gas outlet and the other end to the inlet.

Abstract: A key-value engine may perform garbage collection for a tree or hierarchical data structure on an append-only storage device with page mappings. The key-value engine may separate hot and cold data to reduce write amplification, track extent usage using a restricted or limited amount of memory, efficiently answer queries of valid extent usage, and adaptively or selectively defragment pages in snapshots in rounds of garbage collection.

Abstract: Systems and methods discussed herein, based on a key-value data store including multiple-tiered sorted data structures in memory and storage, implement granularly timestamped concurrency control. The multiple-tiering of the key-value data store enables resolving the snapshot queries by returning data record(s) according to granularly timestamped snapshot lookup instead of singularly indexed snapshot lookup. Queries return a merged collection of records including updates from data structures in memory and in storage, such that a persistent storage transaction may refer to non-committed updates up to a timeframe defined by the snapshot read timestamp. This way, inconsistency is avoided that would result from merely reading data records committed in storage, without regard as to pending, non-committed updates thereto.

Abstract: A key-value engine of a storage system may perform a restart recovery after a system failure. The key-value engine may read a metadata log to locate a latest system checkpoint, and load a page mapping table from the latest system checkpoint. The key-value engine may replay to apply changes to the page mapping table from a system transaction log starting from a system transaction replay starting point. The key-value engine may further form one or more read-only replicas using an underlying file stream opened in a read-only mode during the recovery after the system failure to further facilitate fast recovery and provide fast response to user transactions that conduct read only transactions after the system failure.

Abstract: A refrigerating apparatus applied to a refrigerator is disclosed. The refrigerating apparatus includes a refrigerant, a depressurization gas, an evaporator, a condenser, a first connecting pipe, a second connecting pipe, a third connecting pipe, a blower device and a housing. The evaporator is provided with an inlet and an outlet; the condenser is provided with a condensation cavity, a gas inlet, a gas outlet and a liquid outlet; a molecular sieve membrane is disposed in the condensation cavity; one end of the first connecting pipe is connected to the outlet and the other end to the gas inlet; one end of the second connecting pipe is connected to the liquid outlet and the other end to the inlet; one end of the third connecting pipe is connected to the gas outlet and the other end to the inlet.

Abstract: The invention, belonging to the field of biological treatment of pollutants and functional materials, presents a method for the preparation of biofilm carrier with biochar fixed by thermoplastic resin. Extrusion grade polyethylene/polypropylene particles are used as the basic material. One or some combination of plant biochar, straw biochar, rice husk biochar, shell biochar, excess sludge and animal waste biochar are used as the functional material. The biofilm carrier with biochar fixed by thermoplastic resin is prepared by the screw extrusion process, which is a simple, flexible and controllable method, and possesses strong adaptability. The reactor with these biofilm carriers has high removal efficiency of refractory organic pollutants.

Abstract: A method of manufacturing a bifunctional electrocatalyst for overall water splitting comprising oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) by growing electrocatalyst comprising primarily metallic phosphides on three-dimensional substrate by: immersing the substrate in an iron nitrate solution to form a once disposed substrate; subjecting the once disposed substrate to thermal phosphidation with phosphorus powder under inert gas to grow metal phosphides thereupon and form a once subjected substrate; cooling the once subjected substrate to form a cooled, once subjected substrate; immersing the cooled, once subjected substrate in an iron nitrate solution to form a twice disposed substrate; and subjecting the twice disposed substrate to thermal phosphidation with phosphorus powder under inert gas to provide an electrode comprising the bifunctional electrocatalyst on the three-dimensional substrate.

Abstract: A semiconductor device with an isolation structure and a method of fabricating the same are disclosed. The semiconductor device includes first and second fin structures disposed on a substrate and first and second pairs of gate structures disposed on the first and second fin structures. The first end surfaces of the first pair of gate structures face second end surfaces of the second pair of gate structure. The first and second end surfaces of the first and second pair of gate structures are in physical contact with first and second sidewalls of the isolation structure, respectively. The semiconductor device further includes an isolation structure interposed between the first and second pairs of gate structures. An aspect ratio of the isolation structure is smaller than a combined aspect ratio of the first pair of gate structures.

Abstract: The present disclosure describes a semiconductor structure and a method for forming the same. The semiconductor structure can include a substrate, an insulating stack formed over the substrate, a vertical structure formed through the insulating stack, a source/drain region formed over the vertical structure, and an isolation structure formed adjacent to the source/drain region and protruding the insulating stack. The source/drain region can include a first side surface and a second side surface. A lateral separation between the first side surface and the vertical structure can be greater than an other lateral separation between the second side surface and the vertical structure.

Abstract: A stable three-dimensional core-shell metal-nitride catalyst consisting of NiFeN nanoparticles decorated on NiMoN nanorods supported on porous Ni foam (NiMoN@NiFeN), which functions as an oxygen evolution reaction catalyst for alkaline seawater electrolysis. It yields large current densities of 500 and 1000 mA cm?2 at overpotentials of 369 and 398 mV, respectively, in alkaline natural seawater at 25° C. Combined with an efficient hydrogen evolution reaction catalyst of NiMoN nanorods, current densities of 500 and 1000 mA cm?2 at low voltages of 1.608 and 1.709 V, respectively are achieved for overall alkaline seawater splitting at 60° C.

Abstract: A stylus including a pen body and a magnetic attraction assembly is provided. The magnetic attraction assembly includes a magnet and a magnetic conductive structure. The magnet is disposed at a first position in the pen body. The magnetic conductive structure is disposed in the pen body and connected to the magnet to be magnetized by the magnet, and two end portions of the magnetic conductive structure are respectively located at a second position and a third position in the pen body. The magnetic attraction assembly is adapted to magnetically attract an electronic device at two of the first position, the second position and the third position.

Abstract: A method for performing attribution analysis with respect to an investment portfolio is provided. The method includes: identifying a set of attributes, such as asset class, time period, risk profile, liquidity profile, and/or geographic region, of the investment portfolio; generating a graph that indicates respective relationships among attribute-related decision points that impact the investment portfolio; and calculating, based on the respective relationships among decision points, a respective attribution result for each individual attribute, in order to obtain a set of attribution results that is associated with the investment portfolio. The calculations of the attribution results are independently performable and may be performed in parallel.

Abstract: This application provides a method for multiplexing HTTP channels. The method includes: sending, by the terminal, a first HTTP request to a first server through a first HTTP channel, to request first data; after receiving a first HTTP response returned by the first server, receiving, through the first HTTP channel, a first part that is of the first data and that is sent by the first server; and if a size that is of the first data and that is carried in the first HTTP response is greater than a first threshold, generating a second HTTP request, and sending a second HTTP request to a second server through a second HTTP channel, to request a second part of the first data; and after receiving the first part of the first data, sending control signaling to the first server, to disconnect the first HTTP channel.