Abstract: The invention provides an artificially synthesized single sphingosine lipid and use of delivering a nucleic acid thereof.

Abstract: The present disclosure provides a class of Pyridopyrimidine compounds having a structure shown in Formula (I) or their pharmaceutically acceptable salts, or stereoisomers or prodrug molecules and applications thereof. The compounds in the present disclosure can efficiently and selectively degrade AKT3 protein in cells without affecting AKT1/2, thereby significantly inhibiting tumor cell proliferation mediated by high expression of AKT3 protein. It can be used to prepare therapeutic drugs for cancer and other diseases related to abnormal expression of AKT3 protein.

Abstract: The disclosure relates to the field of electronic materials, and in particular to a composite film of fluorinated polybenzoxazole (6FPBO) and triple-shelled mesoporous silica hollow spheres, and to its preparation and use. The composite film comprises fluorinated polybenzoxazole as a matrix and amino-functionalized triple-shelled mesoporous silica hollow spheres which are dispersed in the fluorinated polybenzoxazole matrix. A mass ratio of (amino-functionalized triple-shelled mesoporous silica hollow spheres)/(fluorinated polybenzoxazole) is 1/100 to 5/100. The composite film has excellent thermal stability and a lower dielectric constant.

Abstract: The present application discloses an ultra-micro defect detection apparatus and a detection method thereof. The apparatus includes an imaging module, a light source module, a filtering module, and a mounting platform; the imaging module further includes a camera, an imaging lens, and an objective lens; the camera, the imaging lens, and the objective lens are sequentially and vertically arranged from top to bottom; the light source module further includes a collimator, a light source generator, and a beam splitting mirror; the light source generator is connected to the beam splitting mirror, and the collimator is mounted between the light source generator and the beam splitting mirror; the filtering module further includes a spatial filter, and the spatial filter is mounted between the imaging lens and the objective lens.

Abstract: A fault root cause identification method, apparatus, and device. For a failure flow that occurs when a connectivity fault for access in a network occurs, a target success flow that has a high similarity with the failure flow is determined from a plurality of success flows in the network based on the failure flow. Then, a target fault root cause of the failure flow is obtained based on the failure flow, the target success flow, and a trained first machine learning model. In this way, the target success flow related to the failure flow is determined from the plurality of success flows in the network, and the first machine learning model trained by using a large quantity of success flows and failure flows whose feature indicators are slightly different from each other is used.

Abstract: The invention provides an artificially synthesized single sphingosine lipid and use of delivering a nucleic acid thereof.

Abstract: The present invention relates to the fields of microorgan-isms, feed, food and ecological restoration, in particular to a strain for degrading deoxynivalenol (DON) and the use thereof. The strain has the deposit number CCTCC No. M 2020565. The strain can grow by means of taking the toxic compound DON as a sole carbon source, and convert the DON into chemical components for itself. The reaction process is irreversible, the reaction conditions are moderate, and secondary pollu-tion cannot be caused. The strain provided in the present invention can be used for preparing a biological detoxification preparation for DON. The strain provided in the present invention can be used for degrading DON in feed and food raw materials, primary processing products, deep processing products and related processing byproducts. The strain provided in the present invention can be applied to various ecosystems such as soil or bodies of water polluted by DON to achieve the purposes of DON degradation and ecological restoration.

Abstract: A battery electrode includes a first metal foil, a second metal foil, and a thermoplastic polymer layer between the first metal foil and the second metal foil. The battery electrode also includes a first coating adjacent to the first metal foil such that the first metal foil is between the thermoplastic polymer layer and the first coating. The battery electrode also includes a second coating adjacent to the second metal foil such that the second metal foil is between the thermoplastic polymer layer and the second coating.

Abstract: The present invention relates to methods for the specific lysis of eukaryotic cells in a sample containing microorganisms such as bacterium and fungus by incubating the sample in a buffer of around pH 9 that contains a non-ionic detergent.

Abstract: A Fresnel lens in a lens body, the lens body is provided with a light incident surface and a light exit surface opposite to each other along a first direction, and the light exit surfaces are adjacently arranged in a second direction perpendicular to the first direction. There are several protruding teeth, and the protruding teeth are formed by an effective surface and an ineffective surface, and the ineffective surface is inclined at an acute angle relative to the first direction. The invention makes the light passing through the lens body reach the effective surface as much as possible, thereby reducing stray light and enhancing light efficiency.

Abstract: A lead-free piezoelectric ceramic sensor material and a preparation method thereof and relates to the technical field of piezoelectric ceramic processing. The main raw materials of the lead-free piezoelectric ceramic sensor material disclosed in the present disclosure are a barium carbonate, a calcium carbonate, a zirconia, a titanium dioxide, a strontium carbonate, an erbium oxide, and a bismuth oxide. The preparation method is prepared through the steps of preparing ingredients, ball milling, granulating and tableting, debinding, and sintering, and the lead-free piezoelectric ceramic sensor material can be made into a lead-free piezoelectric sensor through applying an electrode and electrode polarizing. The present disclosure has an excellent compactness and a good chemical stability. And the piezoelectric sensor made of the lead-free piezoelectric ceramic sensor material has a high sensitivity, a strong working stability, an excellent piezoelectric and has a high Curie temperature.

Abstract: A method for calibrating crosstalk errors in a system for measuring on-wafer S parameters and an electronic device are provided. The method includes two parts. The first part is the pre-calibration part, which obtain eight error terms of an on-wafer S parameter measurement system by using a thru calibration standard, two defined load calibration standards, two pairs of undefined reflect calibration standards, and the reciprocity properties of a passive reciprocal element. The first part performs pre-calibration on an uncalibrated system according to the eight error terms. The second part uses the pre-calibrated system to obtain the crosstalk errors of the measurement system, and performs a further calibration on the pre-calibrated system according to the crosstalk errors.

Abstract: A lead-free piezoelectric ceramic sensor material and a preparation method thereof, and relates to the technical field of piezoelectric ceramic processing. The main raw materials of the lead-free piezoelectric ceramic sensor material disclosed in the present disclosure are a barium carbonate, a calcium carbonate, a zirconia, a titanium dioxide, a strontium carbonate, an oxidation bait, a bismuth oxide, a composite binder and a dispersant agent. The preparation method is prepared through the steps of preparing ingredients, ball milling, granulating and tableting, debinding, and sintering, and the lead-free piezoelectric ceramic sensor material can be made into a lead-free piezoelectric sensor through applying an electrode and electrode polarizing. The present disclosure has an excellent compactness and a good chemical stability.

Abstract: A pressure sensor ceramic material and a preparation method thereof, comprising: nano ceramic particles with a molecular formula CaCu3-xMxTi4-yScyO12, wherein: 0<x?1, 0.2?y?0.8, glass-phase nano-oxide particles with a molecular formula B2O3, AlN, BeO, polymethylformamide, polycrystalline diamond powder, microfiltration membrane polymer, and dimethylformamide The diamond powder coated with 10 ?m to 20 ?m of the sub-micron layer doped AlN and BeO prepared by the present disclosure can reduce the defect of uniform and isotropic crystal structure caused by gradient modification of CaCu3-xMxTi4-yScyO12 by B2O3 glass-phase nano-oxide, reduces the stress concentration of the resulting pressure sensor ceramic material against impact and avoids the defect that the cross-section bonding degree decreases due to the grain boundary movement.

Abstract: The present application discloses an improved aluminum cover plate of a battery, including a cover plate, a metal sheet and an electrode column. The electrode column penetrates and is arranged in rivet holes of the cover plate and the metal sheet, and is riveted with the metal sheet. A first sealing ring is arranged between a cap portion and a nail portion of the electrode column and the cover plate. A second sealing ring is arranged on an outer periphery of the nail portion of the electrode column, and the second sealing ring is clamped and arranged between the cover plate and the metal sheet. The first sealing ring and the second sealing ring are arranged separately.

Abstract: The present application discloses a multi-tab cylindrical battery roll core, including an electrode sheet and a separating film stacked and wound with each other; a tabs and a lead are arranged at the electrode sheet, the tabs is integrally connected with the electrode sheet, and the lead is fixedly connected to the electrode sheet; the tabs and the lead of the same electrode sheet are stacked with each other and are located at a side of a central hole of the roll core; on the same electrode sheet, the lead is located at a side of the tabs stacked with one another, or on the same electrode sheet, the tabs stacked with one another are located between two leads, and the leads can protect the tabs.