Abstract: A shear testing system and method of thermo-seepage-mechanical field and engineering disturbance coupling under deep and complex condition are provided. The shear testing system can be used in conjunction with an axial pressure application device to simplify the structure, save costs, and facilitate a triaxial confining pressure—temperature—axial pressure—torsional shear coupled test on a rock specimen. The shear testing system can achieve the following three purposes. First, the shear testing system can convert an axial pressure into a torsional shear force through a transmission mechanism of a power conversion assembly. Second, the shear testing system can apply an axial pressure to the rock specimen fixed between two specimen fixing heads, through a pressure shaft of an axial pressure mechanism. Third, the shear testing system can apply a triaxial confining pressure and a temperature field to the rock specimen.

Abstract: The disclosure provides a method and a system for adjusting an irradiation angle of a lamp and a lamp with adjustable irradiation angle. The lamp includes a plurality of infrared receivers and a driving motor. The method comprises: receiving an infrared signal from a remote controller via the plurality of infrared receivers; determining an irradiation angle adjustment value of the lamp based on a plurality of infrared signal intensity values of the plurality of infrared receivers; adjusting an irradiation angle of the lamp via the driving motor based on the irradiation angle adjustment value. In the technical scheme provided by the example of the disclosure, when the irradiation angle of the lamp needs to be adjusted, the irradiation angle of the lamp is controlled only by operating the remote controller.

Abstract: Disclosed in the present invention is a polyether polyol refining method, comprising (1) neutralising or diluting crude polyether polyol to obtain a mixed solution; (2) flowing the mixed solution through a hydrophilic medium to aggregate same into a first density phase liquid and a second density phase liquid, the first density phase liquid being an aqueous solution containing alkaline metal ions and/or alkaline earth metal ions, and the second density phase liquid being polyether polyol; and (3) allowing the first density phase liquid to settle and separating same from the second density phase liquid to obtain refined polyether polyol. In the present refining method, using the hydrophilic medium for one-step removal of the alkaline ions and water in the polyether polyol simplifies the treatment steps, increases treatment efficiency, and can prevent polyether polyol loss; the obtained polyether polyol has low alkaline ion content and little odour.

Abstract: The present disclosure provides a method and a device for preparing a modified poly (m-phenylene isophthalamide) (PMIA) fiber by continuous polymerization-dry-wet spinning. The method includes the following steps: (1) preparing a mixed solution of m-phenylenediamine (MPD) and a copolymerized diamine monomer in N,N-dimethylacetamide (DMAC) serving as a solvent using a cosolvent; (2) mixing isophthaloyl chloride (IPC) with the mixed solution of the MPD and the copolymerized diamine monomer in the DMAC, and conducting pre-polycondensation and polycondensation in sequence to obtain a modified PMIA resin solution; and (3) subjecting the modified PMIA resin solution to additive addition, filtration, defoaming, and dry-wet spinning to obtain the modified PMIA fiber.

Abstract: The present invention belongs to the technical field of CMOS image sensors, and particularly relates to an on-chip multiplexing pixel control circuit for controlling a super-large area array splicing CMOS image sensor. The multiplexing type pixel control circuit includes at least one multiplexing unit, each multiplexing unit includes L levels of serial pixel control sub-circuits and a windowing address gating circuit. Through the different positions of the multiplexing units in the whole chip, the group address buffer circuits of the multiplexing units generate different group address reference signals, which are compared with a group decoding address generated in a group decoding address buffer circuit to realize group decoding and gate the multiplexing unit. Meanwhile, the serial pixel control sub-circuit in the multiplexing unit is compared with a row decoding address to realize exposure and readout control of a corresponding row of the multiplexing unit.

Abstract: The present invention relates to a new use for hematopoietic stein cells, and especially to the use of hematopoietic stein cells in the preparation of a formulation for treating viral diseases. The viral diseases are selected from viral hepatitis, influenza, viral interstitial pneumonia, viral encephalitis and avian influenza. The new use of hematopoietic stein cells provided by the present invention may have a good application prospect for the treatment of influenza viral diseases.

Abstract: The present invention belongs to the technical field of CMOS image sensors, and particularly relates to an on-chip multiplexing pixel control circuit for controlling a super-large area array splicing CMOS image sensor. The multiplexing type pixel control circuit includes at least one multiplexing unit, each multiplexing unit includes L levels of serial pixel control sub-circuits and a windowing address gating circuit. Through the different positions of the multiplexing units in the whole chip, the group address buffer circuits of the multiplexing units generate different group address reference signals, which are compared with a group decoding address generated in a group decoding address buffer circuit to realize group decoding and gate the multiplexing unit. Meanwhile, the serial pixel control sub-circuit in the multiplexing unit is compared with a row decoding address to realize exposure and readout control of a corresponding row of the multiplexing unit.

Abstract: A method for profiling a dataset includes: querying, by a data profiler executed on a distributed computing system, a metadata storage to obtain table information; allocating, by the data profiler, system resources based on the obtained table information; profiling, by the data profiler, the dataset to obtain profiling results, wherein profiling the dataset includes shuffling and repartitioning data blocks of the dataset with respect to a plurality of nodes of the distributed computing system, and computing aggregates based on the shuffled and repartitioned data blocks; and outputting, by the data profiler, the profiling results.

Abstract: A computing system for big data processing includes: a first node, configured to execute a central driver program; and a plurality of data and/or computing nodes, configured to store a plurality of data blocks corresponding to a data set. The first node and the plurality of data and/or computing nodes form a distributed computing environment configured for determining an exact value for one or more desired quantiles for the data set.

Abstract: A method for profiling a dataset includes: querying, by a data profiler executed on a distributed computing system, a metadata storage to obtain table information; allocating, by the data profiler, system resources based on the obtained table information; profiling, by the data profiler, the dataset to obtain profiling results, wherein profiling the dataset includes shuffling and repartitioning data blocks of the dataset with respect to a plurality of nodes of the distributed computing system, and computing aggregates based on the shuffled and repartitioned data blocks; and outputting, by the data profiler, the profiling results.

Abstract: A computing system for big data processing includes: a first node, configured to execute a central driver program; and a plurality of data and/or computing nodes, configured to store a plurality of data blocks corresponding to a data set. The first node and the plurality of data and/or computing nodes form a distributed computing environment configured for determining an exact value for one or more desired quantiles for the data set.