Abstract: A polyamide (PA) nanofiltration (NF) membrane and a preparation method thereof by regeneration from a scrapped microfiltration (MF) membrane are provided. The method adopts a cleaning-repairing-interfacial polymerization upgrading strategy, where, sodium hypochlorite and oxalic acid are used for deeply cleaning a scrapped MF membrane. PDA is used as a repairing agent to construct a reaction platform on the membrane surface, and finally a reaction system of piperazine and trimesoyl chloride (TMC) are used to form a PA NF membrane with a PA active layer. The repairing can construct a coating with a given thickness and prominent hydrophilicity on the membrane surface, which provides favorable base membrane conditions for upgrading and preparing an NF membrane.

Abstract: A zeolite membrane and a preparation method thereof are provided. The method includes: adding an organic binder solution dropwise to zeolite, and thoroughly grinding and stirring; blade-coating a resulting mixture on a substrate at a given thickness; and drying to obtain the zeolite membrane. The preparation of a zeolite membrane does not require a complicated hydrothermal crystal growth process, and the membrane can be prepared directly from natural zeolite or artificial zeolite. A prepared zeolite membrane has the characteristics of simple preparation process, low cost, prominent water permeability, high contaminant rejection rate and high zeolite load. The zeolite membrane, when used for the rejection of contaminants in water, can not only remove macromolecular contaminants in water, but also efficiently remove ammonia nitrogen by way of ion exchange, which is suitable for advanced treatment of wastewater.

Abstract: A fungus having manganese oxidation capacity is provided. The fungus can oxidize Mn2+ in a water body into a water-insoluble manganese oxide; and the Mn2+ oxidizing fungus is Cladosporium sp. XM01 strain with the accession number of CGMCC NO. 21083. The Cladosporium sp. XM01 strain is used to oxidize Mn2+ in a natural water body, and has stable operation within a range of room temperature (15-30° C.) and a range of neutral pH (6.0-7.5) and high Mn2+ oxidation efficiency; moreover, the XM01 strain may oxidize Mn2+ cyclically, thereby achieving the in-situ remediation of water bodies or soils polluted by heavy metals or trace organic substances. The manganese oxides generated through oxidization in the growth process of the strain have a good application potential in sewage treatment, water environment restoration, soils and other fields.

Abstract: The present invention provides in general methods for transdifferentiation of a somatic cell, e.g., a fibroblast, to a dopaminergic precursor. Specifically, the present invention relates to methods for making iDP cells, and methods for using them in, e.g., treating neurodegenerative diseases such as Parkinson's disease.

Abstract: The present disclosure provides a new Internet virtual data center system and a method for constructing the same. The new Internet virtual data center system includes: an Internet data explorer to sample and estimate Internet data to generate a data resource distribution map, the data resource distribution map reflects attribute information of Internet data; an Internet virtual resource library to store data resource distribution map and sample data collected by the Internet data explorer; a data resource distribution map management module to manage data resource distribution map; and a data resource guidance service module to generate and provide guidance service for data collection and mining of a data demander according to data resource distribution map. The present disclosure overcomes the blindness and disorder of the big data collection and development of the existing data centers, and avoids waste of resources and energy.

Abstract: An electrochemical membrane module for selectively removing pollutants and a preparation method thereof are provided. A Ti/SnO2—Sb substrate electrode is coated with a MI—TiO2 sol-gel by means of a dip-coating method, and then sintered to obtain a molecular imprinting type Ti/MI—TiO2/SnO2—Sb coated electrode; the coated electrode is adhered to a ceramic micro-filtration membrane using epoxy resin glue to obtain a Ti/MI—TiO2/SnO2—Sb MI-anodic conductive composite membrane; the MI-anodic conductive composite membrane is used as an anode, and a titanium mesh is used as a cathode, so that the electrochemical membrane module capable of selectively removing pollutants is obtained. The invention effectively combines an electrochemical micro-filtration membrane and a molecular imprinting technique. When the electrochemical membrane module is used, suspended particles and refractory organics in the sewage are removed, and a highly selective removal of certain refractory pollutants can be achieved.

Abstract: A method for enhancing biochemical water treatment by a powder carrier includes: (i) screening the powder carrier by removing impurities to obtain a screened powder carrier; (ii) dissolving the screened powder carrier by stirring to prepare a slurry, enabling the screened powder carrier to completely absorb moisture to obtain a soaked powder carrier slurry; (iii) adjusting the pH value and adding the soaked powder carrier slurry into a bioreactor or a biological reaction structure; (iv) distributing the soaked powder carrier slurry uniformly through a hydraulic agitation; (v) loading a microorganism on the inner pore and wrapping on the surface of the soaked powder carrier slurry to obtain powder-loaded biological floccules; (vi) settling the powder-loaded biological floccules in a sedimentation zone and separating the powder carrier from the microorganism for reuse.

Abstract: A method for assembling and synthesizing Cu2O particle-supported porous CuBTC includes the following steps of: 1) dissolving polyvinylpyrrolidone (PVP) in ethanol solution to obtain a PVP-ethanol solution; 2) dissolving copper salt in distilled water, and mixing with trimesic acid, salicylic acid, and the PVP-ethanol solution obtained in step 1) under stirring; and 3) conducting a hydrothermal reaction on the mixed solution obtained in step 2) at 120° C. to obtain Cu2O particle-supported porous CuBTC. The new method introduces salicylic acid during the synthesis of CuBTC. The salicylic acid, as a ligand precursor, forms a porous CuBTC material through the unsaturated coordination of a ligand under the catalysis of Cu ion. The resulting porous CuBTC supported with ultrafine Cu2O nanoparticles can adsorb high-energy molecules and exhibit excellent crystallinity, porosity, and stability.

Abstract: Disclosed is a cross-modality person re-identification method based on local information learning, the method comprising the following steps: acquiring a standard data set and performing data enhancement on the standard data set; dividing the enhanced standard data set into a training set and a test set; constructing a cross-modality person re-identification training network based on a dual-stream ResNet50 convolutional neural network architecture; inputting the training set into the cross-modality person re-identification training network to obtain a cross-modality person re-identification test network through training; randomly selecting an image to be queried from the test set, and inputting the image to be queried and a candidate database from the test set into the cross-modality person re-identification test network to obtain an identification accuracy value corresponding to the image to be queried.

Abstract: A method for vehicle following control based on the real-time calculation of dynamic safe following distance. A preset vehicle deceleration model with three preset behavior adjustment parameters is used to obtain the absolute braking distance models of the leading and following vehicles, then to further establish the dynamic safe following distance model for calculating the dynamic safe following distance between the following vehicle and the leading vehicle in real time. In the process of vehicle following operation, the current dynamic safe following distance is compared with the current actual following distance to determine whether to adjust the following behavior of the following vehicle and how to control the following vehicle to move in safety, efficiency and smoothness.

Abstract: A method for harmlessly pretreating an organic solid waste based on combination of calcium ion and hydrothermal treatment, including: preliminarily screening the organic solid waste followed by addition of calcium ions and hydrothermal treatment to make the organic solid waste harmless.

Abstract: Provided herein is a method for anaerobically fermenting an organic solid waste, including: subjecting the organic solid waste to anaerobic fermentation under catalysis of a zirconium-based metal organic framework (MOF) material.

Abstract: The present invention relates to a place change driven software update method and apparatus, and a readable storage medium. The method includes: modeling a software architecture SA and an evolution rule set L?R through Bigraph; acquiring a software architecture SAt after movement and before evolution of the SA; computing a place ?P that changes between the SA and the SAt, thereby acquiring a corresponding evolution rule Lj?Rj; and cutting a matching subgraph GL on a link graph SAL and replacing with a link graph RjL to obtain a new SA link graph SAL,e; and merging the new SA place graph and the new SA link graph, thereby implementing update of the software architecture. Compared with the prior art, the present invention may describe place change information and system change information at the same time, and avoid the complexity, risk, unreliability and the like of conversion between different models.

Abstract: The present disclosure discloses a three-dimensional seismic and vibration isolator with adaptive stiffness property in both vertical and horizontal directions. The isolator comprises an upper connection plate, a middle plate, an lower connection plate, a disc spring, a pre-compressed helical springs, a laminated lead rubber bearing, and viscous dampers. The upper connection plate, the middle plate and lower connection plate are made of high strength low carbon steel. The upper connection plate and middle plate are tightly contacted by the occlusive design, to guide the vertical motion. The vertical isolation system is made up of the disc spring, pre-compressed helical spring, and viscous damper. The horizontal isolation system comprises the laminated lead rubber bearing, pre-compressed helical spring and viscous damper.

Abstract: The present invention relates to a method for measuring the AC impedance of a battery in a composite power supply power system, comprising the following steps: determining the AC disturbance signal amplitude, operating the DC/DC voltage converter to generate the AC disturbance signal, collecting the output signals of the fuel cell and the lithium battery, calculating the output power of the fuel cell and the lithium battery; calculating the demand power of the load, and when the demand power is stable, calculating the impedance of the lithium battery and the fuel cell separately, otherwise, only the impedance of the fuel cell is calculated.

Abstract: The present invention relates to a power assembly for a robotic platform for a Global Vehicle Target (GVT) of autonomous driving. The power assembly includes an assembly housing, a motor, a transmission mechanism, a standby brake, a suspension and wheels, where when the power assembly is in use, a driving force output by the motor is transmitted to the wheels by means of the transmission mechanism, so as to drive the wheels to rotate, the standby brake is used for braking an output shaft of the motor, a top of the suspension supports the assembly housing, and when a load borne by the assembly housing changes, the suspension contracts or extends to drive the wheels to rotate upwards and downwards with a housing of the transmission mechanism as a swing arm and a rotating shaft of the motor as a swing arm rotation center.

Abstract: The present invention relates to a trustworthy search method for a search engine based on a knowledge graph, which includes: acquiring a search keyword input by a user to construct a keyword pool; selecting a keyword according to a keyword selection policy, and respectively inputting the keyword to a search engine in sequence for searching to obtain a result returned by the search engine; constructing a knowledge graph of a Web page in sequence; selecting a specific knowledge mode; matching the knowledge graph with an existing semantics reliable knowledge graph library, and then computing a content support degree of each Web page according to a matching result; sorting the search engine under the same keyword by using a content support degree expectation of the Web page; and completing trustworthy search of the search engine based on the knowledge graph.

Abstract: A hybrid hydrogel carrier for high-salinity wastewater treatment and a preparation method thereof are disclosed. The hybrid hydrogel carrier includes a functional microorganism and a conductive hydrogel carrier, wherein the functional microorganism is a halotolerant species; the conductive hydrogel carrier is a compatible conductive hybrid hydrogel, and magnetic triiron tetraoxide (Fe3O4) particles and a compatible substance are uniformly distributed on the surface and inside.

Abstract: A copper-palladium-loaded mesoporous silicon carbide-based catalyst, a preparation method, and an application thereof are provided. First, a mesoporous silicon carbide material is prepared by using mesoporous silica as a hard template; subsequently, the mesoporous silicon carbide material is mixed with a copper-palladium precursor mixed solution, and dried after the solvent is completely volatilized. The dried powder is successively subjected to calcination with N2 and reduction with H2 to finally obtain the copper-palladium-loaded mesoporous silicon carbide-based catalyst. The catalyst is made into an electrode, and the nitrate in water body is catalytically reduced by electrochemical method. The preparation method of the catalyst of the present invention is simple. The catalyst can realize high-efficiency catalytic denitrification at a low metal loading amount, with high selectivity of nitrogen. Moreover, the catalyst has the advantages of high activity, good stability, wide application range and low cost.

Abstract: A method for enhancing anaerobic digestion based on solid-liquid interface renewal in sludge is disclosed. The method includes subjecting sludge to a centrifugation, a thermal baking and a redissolution in softened water in sequence to renew a solid-liquid interface in sludge, and subjecting the sludge to an anaerobic digestion to increase methane production from organic matter in the sludge by anaerobic biotransformation.