Abstract: A floorboard unit and a floorboard connecting structure are disclosed in the application. The floorboard unit includes a floorboard body and a connecting post. The connecting post is located at an end edge of a lower surface of the floorboard body, and an end of the connecting post is provided with a hooking part folded in a direction toward an end of the floorboard body, and the hooking part is of an approximate trapezoidal structure, and the hooking part is provided with an introduction sloping face for auxiliary clamping. The floorboard connecting structure according to the disclosure is of a locking type, so it can be paved without glue due to a locking force, which is safe and environment-friendly. A whole structure may extend all around with change of temperature, and there will be no problems such as uplift or cracking due to the change of temperature.

Abstract: Disclosed are ansa-metallocene catalysts for the production of polyethylenes. The subject metallocenes comprise a fluorenyl ligand linked to a substituted cyclopentadienyl or indenyl ligand by a one-atom bridge, wherein the cyclopentadienyl or indenyl ligand includes a silyl substituent of the formula —SiR5R6R7, wherein R5 and R6 are selected independently from a C1-C20 hydrocarbyl, R7 is selected from a C2-C20 hydrocarbyl. The presence of a C2+ hydrocarbyl group on the silyl moiety may provide one or more unexpected features such as high polymerization activities, high comonomer incorporation efficiencies (CIE), low levels of long-chain branching (LCB), and a reverse Short-chain Branching Distribution profile over the molecular weight distribution. Combinations of these properties can provide excellent resin processability, clarity, strength, and other desirable properties, especially for films.

Abstract: The present invention relates to a prepolymerized catalyst made by the prepolymerization of olefin with a catalyst precursor and an activator in-situ. The prepolymerized catalyst of the present invention has better morphology, less fine particle size, and less static/better powder flow ability, which is capable of preventing fouling of olefin polymer particles to a polymerization reactor. In some embodiments, the prepolymerized catalyst produces polyethylene (co) polymers containing sporadic long chain branches in high molecular weight fractions, comprising a high molecular weight tail along with reversed comonomer composition distribution and showing improved processability, enhanced melt strength and improved optical properties.

Abstract: Described is speech pre-training, which includes acquiring a speech sample and phoneme data corresponding to the speech sample. Speech features of speech frames are extracted in the speech sample. Based on the speech features and the phoneme data, the speech sample is divided into at least one speech segment, where one speech segment corresponds to one phoneme. Based on speech features of speech frames in speech segments corresponding to a same phoneme, target features of phonemes are determined. The target features of the phonemes are used as initial clustering centers. Based on the initial clustering centers and to obtain corresponding clustering labels, the speech features of the speech frames in the speech sample are clustered. By using the corresponding clustering labels to obtain a speech pre-training model, a predetermined network model is trained.

Abstract: A floorboard connecting base and a floorboard connecting structure are disclosed in the application. The floorboard connecting base includes a base body, a convex part and a limiting part. The convex part is located at an end of an upper surface of the base body. The limiting part is located at the upper surface of the base body, and is spaced from the convex part to form an installation groove for inserting a floorboard unit, and a free end of the limiting part is bent in a direction towards the convex part to form a step block for limiting the floorboard unit. The floorboard connecting structure according to the disclosure is of a locking type, so it can be paved without glue due to a locking force, which is environment-friendly. A whole structure may extend all around with change of temperature, and there will be no uplift or cracking.

Abstract: A communication system, method, and device for a miniature intelligent sensor. The communication system includes a sensor, a power gateway, and a power Internet of things (IoT) server. The sensor is configured to obtain sensor data and send the sensor data to the power gateway according to a Bluetooth communication protocol. The power gateway is configured to receive the sensor data and perform protocol conversion on the sensor data to obtain protocol conversion data adapted to a message queuing telemetry transport (MQTT) protocol. The power gateway is configured to send the protocol conversion data to the power IoT server according to the MQTT protocol. The power IoT server is configured to receive the protocol conversion data and obtain server receiving data of the power IoT server according to the protocol conversion data.

Abstract: Some embodiments of this application provide an injection nozzle and an injection apparatus containing same. The injection nozzle includes a body, an injection pipe, and a baffle. The body contains a channel arranged along a height direction of the injection nozzle. A first outlet is disposed at a lower part of the channel. The injection pipe is threaded through the channel in a manner of reciprocating movement along the height direction. The baffle is connected to the body and configured to cover the first outlet when a lower end portion of the injection pipe is higher than the first outlet, and be propped open by the injection pipe when the lower end portion of the injection pipe is lower than the first outlet.

Abstract: A quinoline derivative used for soft tissue sarcoma combination therapy, relating to a use of the quinoline derivative in combination with a second therapeutic drug to treat soft tissue sarcoma, wherein the second therapeutic drug may be a chemotherapy drug, a small molecule targeted anti-tumour drug or an immunotherapy drug. The chemical name of the quinoline derivative compound I is 1-[[[4-(4-fluoro-2-methyl-1H-indol-5-yl)oxy-6-methoxyquinolin-7-yl]oxy]methyl]cyclopropylamine.

Abstract: The present disclosure belongs to the field of organic optoelectronic materials, and disclosed are a tetraphenylbenzene-containing organic light-emitting material, and a preparation method and an application thereof. The tetraphenylbenzene-containing organic light-emitting material has a structural formula as Formula I, where R1 is an electron-donating group of an aromatic ringderivative, and R2 is an electron-withdrawing group of the aromatic ringderivative. The preparation thereof includes the following steps: using 1,4-dibromo-2,5-terphenyl and R2-substituted phenylboronic acid as raw materials, obtaining an R2-containing aromatic ringcompound through a Suzuki reaction; and then reacting the R2-containing aromatic ringcompound with R1-substituted phenylboronic acid or boronic acid ester in the presence of a tetrakis(triphenylphosphine)palladium catalyst to obtain the tetraphenylbenzene-containing organic light-emitting material.

Abstract: The disclosure provides a battery, a battery module, and an electric device. The battery includes a housing, a cell, and a cover plate assembly; the housing includes a first port and an accommodating cavity, and the cell is disposed in the accommodating cavity; the cover plate assembly is configured to seal the first port of the housing and includes a cover plate, and the cover plate includes a positioning portion disposed at a side of the cover plate close to the housing; and the cover plate is welded to the housing through the positioning portion to seal the first port of the housing.

Abstract: The present application relates to battery technology and discloses a battery current collector plate and a battery. The battery current collector plate includes a tab connection portion, a terminal connection portion, and a fuse. The tab connection portion represents an annular structure. The terminal connection portion is disposed at the center of the tab connection portion. An annular gap is formed between a circumferential edge of the terminal connection portion and an inner circumferential edge of the tab connection portion. Two ends of the fuse are respectively connected to the circumferential edge of the terminal connection portion and the inner circumferential edge of the tab connection portion.

Abstract: A current collector disk and a battery. The current collector disk includes a disk body on which a plurality of infiltration holes is provided. The infiltration holes penetrate through the disk body in a direction of a thickness of the disk body. The disk body has a first side surface and a second side surface which are oppositely disposed. The first side surface is recessed with a plurality of grooves. At least one end of each of the plurality of grooves communicates with a respective one of the plurality of infiltration holes. The battery includes the current collector disk described above.

Abstract: A cap includes: a cap body; a pole; and a sealing nail. The pole is connected to the cap body. The pole defines a slot; a plane in which an upper surface of the pole is located is defined as a first plane; a slot wall includes a first section face; the first section face is connected to the first plane; an angle between the first section face and the first plane is ?2. The sealing nail is arranged in the slot and welded to the pole. A plane in which an upper surface of the sealing nail is located is defined as a second plane; a side wall of the sealing nail includes a first portion face; the first portion face is connected to the second plane; an angle between the first portion face and the second plane is ?1. The angle ?1?the angle ?2.

Abstract: A current sensor includes: four first uniaxial TMR chips and at least two second uniaxial TMR chips, each first uniaxial TMR chip and each second uniaxial TMR chip being located on the same virtual ring, wherein magnetic sensitive directions of the four first uniaxial TMR chips are perpendicular to a radius of the virtual ring, magnetic sensitive directions of two adjacent first uniaxial TMR chips are perpendicular to each other, magnetic sensitive directions of the two second uniaxial TMR chips are parallel to the radius of the virtual ring and opposite to each other, and the two second uniaxial TMR chips respectively have the same positions as two first uniaxial TMR chips; each first uniaxial TMR chip and each second uniaxial TMR chip are configured to collect a magnetic induction intensity, the magnetic induction intensity is configured to calculate a target current value of a to-be-measured wire.

Abstract: A nucleoside triphosphate photoaffinity probe, method for preparing same, and applications thereof. The nucleoside triphosphate photoaffinity probe is a novel small molecule activity probe for detecting nucleoside triphosphate-binding proteins and is based on the structure of nucleoside triphosphates (GTP and ATP) connected to a smaller photoaffinity side chain modification. This probe can effectively label nucleoside triphosphate-binding proteins in cell lysates for high-throughput proteomics analysis, identify and analyze the binding sites of the probe, and can also be used to analyze the action sites of nucleoside triphosphate competitive inhibitors, thus having significant practical application value.

Abstract: A floorboard connecting base and a floorboard connecting structure are disclosed in the application. The floorboard connecting base includes a base body, a convex part and a limiting part. The convex part is located at an end of an upper surface of the base body. The limiting part is located at the upper surface of the base body, and is spaced from the convex part to form an installation groove for inserting a floorboard unit, and a free end of the limiting part is bent in a direction towards the convex part to form a step block for limiting the floorboard unit. The floorboard connecting structure according to the disclosure is of a locking type, so it can be paved without glue due to a locking force, which is environment-friendly. A whole structure may extend all around with change of temperature, and there will be no uplift or cracking.

Abstract: A floorboard unit and a floorboard connecting structure are disclosed in the application. The floorboard unit includes a floorboard body and a connecting post. The connecting post is located at an end edge of a lower surface of the floorboard body, and an end of the connecting post is provided with a hooking part folded in a direction toward an end of the floorboard body, and the hooking part is of an approximate trapezoidal structure, and the hooking part is provided with an introduction sloping face for auxiliary clamping. The floorboard connecting structure according to the disclosure is of a locking type, so it can be paved without glue due to a locking force, which is safe and environment-friendly. A whole structure may extend all around with change of temperature, and there will be no problems such as uplift or cracking due to the change of temperature.

Abstract: A current collecting plate and a battery are provided in the present application, where the current collecting plate is applied to a battery including a battery cell and a housing, the current collecting plate includes a plate body and a buffer part, and at least two buffer parts are provided, each of the buffer parts is bent to form an abutment part, the abutment part is protruded from a side of the plate body away from the battery cell, the abutment part abuts against the housing, and one end of either of two adjacent ones of the buffer parts is connected through a weak part, and another end of the buffer part away from the weak part is connected with the plate body.

Abstract: Some embodiments of this application provide an injection nozzle and an injection apparatus containing same. The injection nozzle includes a body, an injection pipe, and a baffle. The body contains a channel arranged along a height direction of the injection nozzle. A first outlet is disposed at a lower part of the channel. The injection pipe is threaded through the channel in a manner of reciprocating movement along the height direction. The baffle is connected to the body and configured to cover the first outlet when a lower end portion of the injection pipe is higher than the first outlet, and be propped open by the injection pipe when the lower end portion of the injection pipe is lower than the first outlet.