Abstract: The present invention provides a prosthetic heart valve, including a stent, prosthetic leaflets and an occlusion mechanism. Both the prosthetic leaflets and the occlusion mechanism are connected to the stent. The occlusion mechanism is able to extend outwards away from the stent and fill up a recessed portion of a native valve annulus, thereby closely fitting the prosthetic heart valve against the native valve annulus and effectively preventing paravalvular leakage.

Abstract: A polymerizable phosphonate monomer and a preparation method therefor, a copolymer prepared and obtained from the polymerizable phosphonate monomer and a drilling fluid that uses the copolymer are disclosed. The anion of the polymerizable phosphonic acid (salt) has a structure that is represented in the following formula (1), and the cation is at least one among hydrogen, a monovalent metal cation, a divalent metal cation, a trivalent metal cation, and a tetravalent metal cation. In addition, 1H NMR of the polymerizable phosphonic acid (salt) substantively has no peak at the chemical shift ? of 1.019. The preparation method for a polymerizable phosphonic acid (salt) monomer as provided in the present invention uses an organic solvent as the solvent of a reaction system, so that compared to a water solvent system, reaction efficiency is higher, less by-products are produced, and the separation of the obtained products is simpler.

Abstract: A service processing method includes that a first network device determines a second network device on a forwarding path of a packet based on a service requirement; the first network device sends a first message to the second network device, to establish a first connection to the second network device; and the first network device sends a second message to the second network device using the first connection, where the second message requests the second network device to assist in determining information related to the forwarding path. when determining the second network device is needed to assist the first network device for information related to the forwarding path of the packet, the first network device actively establishes a connection to the second network device, and requests, using the established connection, the second network device to assist the first network device in determining the information related to the forwarding path.

Abstract: A method including receiving an input comprising natural language texts; segmenting the natural language texts into sections; summarizing the natural language texts; developing a first model based on the plurality of sections and the summary of the natural language texts; identifying one or more salient sentences within the natural language texts using the first model; determining a sentence quality score based on how informative a salient sentence is; determining a sentence similarity score based on a salient sentence's similarity to another salient sentence; developing a second model based on the sentence quality score and the sentence similarity score; combining the first model and the second model into a final model; selecting sentences based on the final model; and generating an extractive summarization using the selected sentences.

Abstract: Disclosed are rechargeable, organic, potassium ion batteries suitable for use at high temperatures and in a variety of applications that require thermally stable batteries (e.g., well drilling, electric vehicles, military applications, among others).

Abstract: Disclosed are a Shewanella decolorationis producing tetrodotoxin and an application thereof, falling in the field of development and utilization of medicinal microorganisms. A strain, Shewanella decolorationis S3-4, is deposited in the China General Microbiological Culture Collection Center (CGMCC) on Mar. 28, 2022, with a deposit number of CGMCC No. 24602. The strain can secrete a same substance as tetrodotoxin from Tetraodontidae.

Abstract: The present application relates to a method (I) for preparing a brivaracetam intermediate, comprising the steps of dissolving the compound represented by B-P and 1S,2S-diphenylethylenediamine in a solvent for resolution, crystallizing, filtering, and recrystallizing to obtain the compound represented by B-Q, which is then converted to the brivaracetam intermediate represented by B-R. This method can effectively resolve the compound represented by B-P. The present application also provides a method for preparing brivaracetam using the compound represented by B-R. The method can separate the effective components only through simple steps such as extraction, washing, drying, and concentration without requiring use of chiral chromatography column to separate isomers in the preparation process, and thus the separation process is simple, greatly reducing the production cost of brivaracetam.

Abstract: A positioning method realized by a computer including acquiring a gamma angle for treatment; acquiring first coordinates of a treatment couch, the first coordinates being coordinates of the treatment couch when a preset shooting point coincides with an imaging point of an image guidance system (IGS); determining a first relative position between a target point of an affected part and the imaging point according to the gamma angle for treatment; acquiring a second relative position between the imaging point and an equipment isocenter; calculating second coordinates of the treatment couch at the gamma angle for treatment when the target point coincides with the equipment isocenter according to the first coordinates, the first relative position and the second relative position; and adjusting a position of the treatment couch according to the second coordinates.

Abstract: The present disclosure provides a method for assessing GCS capacity. The method includes: determining scores of a plurality of geologic indicators of a target region belonging to a target type of geologic body for the GCS; and determining an assessment result of the GCS capacity of the target region based on the scores of the plurality of geologic indicators and weights of the plurality of geologic indicators.

Abstract: A terminal device includes a sound output device and a middle frame with a first through hole and a second through hole. The display module is mounted on the middle frame, and the sound output device is located on a side of the middle frame. The terminal device is provided with a first sound output hole set and a second sound output hole set. The sound output device is fixed to the middle frame by a bracket provided with a first groove section, a second groove section, and a third groove section. The sound output device is in communication with the first sound output hole set through the first groove section and the first through hole. and the sound output device in communication with the second sound output hole set through the first groove and the second through hole.

Abstract: The present invention provides a biopsy rotary cutting device, which comprises a dynamic sealing structure(4) arranged outside an inner cutting cannula(3); the dynamic sealing structure(4) forms a cavity outside the inner cutting cannula(3); the inner cutting cannula(3) comprises a first tube section(31) and a second tube section(32) that are arranged in sequence along the axial direction of the inner cutting cannula(3); the outer diameter of the second tube section(32) is smaller than that of the first tube section(31); a sealing ring(43) is arranged inside the dynamic sealing structure(4); the cavity comprises a first cavity(41) and a second cavity(42); when the inner cutting cannula(3) moves to a first position along its axial direction, the sealing ring(43) is located at the outer side of the second tube section(32); and there is an inter-cavity gap(46) between the sealing ring(43) and the second tube section(32) to realize communication between the first cavity(41) and the second cavity(42).

Abstract: For assembling a heat pump, an apparatus includes a loading part located in an initial section of the fully automatic intelligent production line of an integrated thermal management module. The apparatus includes a first assembling part, located downstream of the loading part, that assembles a refrigerant side components of the heat pump. The apparatus includes a first testing part, located downstream of the first assembly part, that tests the refrigerant side components. The apparatus includes a second assembling part, located downstream of the loading part, that assembles the cooling water side components of the heat pump. The apparatus includes a second testing part, located downstream of the second assembling part, that tests the cooling water side components. The apparatus includes a finished product part, located downstream of the second testing part, that outputs a finished product.

Abstract: A control method and device for an unmanned aerial vehicle, and a non-transitory computer readable storage medium are provided. The control method may include: acquiring shooting control information, the shooting control information including a height of a shooting target object, a mission height, and an overlapping ratio; determining the target flight route and a shooting interval based upon the shooting control information; and controlling an unmanned aerial vehicle to fly according to the target flight route and to photograph the shooting target object according to the shooting interval by using a photographing device during the flight. The mission height may be a distance between a plane where a target flight route is located and a plane where the shooting target object is located, and a starting plane for computing the overlapping ratio may be the plane where the shooting target is located.

Abstract: A method including receiving an input comprising natural language texts; segmenting the natural language texts into sections; summarizing the natural language texts; developing a first model based on the plurality of sections and the summary of the natural language texts; identifying one or more salient sentences within the natural language texts using the first model; determining a sentence quality score based on how informative a salient sentence is; determining a sentence similarity score based on a salient sentence's similarity to another salient sentence; developing a second model based on the sentence quality score and the sentence similarity score; combining the first model and the second model into a final model; selecting sentences based on the final model; and generating an extractive summarization using the selected sentences.

Abstract: Disclosed are a Shewanella decolorationis producing tetrodotoxin and an application thereof, falling in the field of development and utilization of medicinal microorganisms. A strain, Shewanella decolorationis S3-4, is deposited in the China General Microbiological Culture Collection Center (CGMCC) on Mar. 28, 2022, with a deposit number of CGMCC No. 24602. The strain can secrete a same substance as tetrodotoxin from Tetraodontidae.

Abstract: A method including: receiving an input comprising natural language texts at an encoder; adding a token to the input; obtaining a last-layer hidden state as a natural language text representation; feeding the natural language text representation into a single-layer classification head; predicting a salience allocation based on the single-layer classification head; developing a salience-aware cross-attention (SACA) decoder to determine salience in the natural language text representation; mapping a plurality of salience degrees to a plurality of trainable salience embeddings; estimating an amount of signal to accept from the plurality of trainable salience embeddings; incorporating the salience allocation and the signal in a cross-attention layer model; and generating a summarization based on the SACA decoder and the cross-attention layer model.

Abstract: The present disclosure relates to novel crystalline forms of ozanimod and preparation method thereof. The provided crystalline forms of ozanimod comprise crystalline form CS9, crystalline form CS10 and crystalline form CS11, and can be used for treating autoimmune diseases, particularly used for preparing drugs for treating multiple sclerosis and ulcerative colitis. The crystalline forms of the present disclosure have one or more advantages in solubility, stability, hygroscopicity and processability and provide new and better choices for the preparation of ozanimod drug product, and are very valuable for drug development.

Abstract: For assembling a heat pump, an apparatus includes a loading part located in an initial section of the fully automatic intelligent production line of an integrated thermal management module. The apparatus includes a first assembling part, located downstream of the loading part, that assembles a refrigerant side components of the heat pump. The apparatus includes a first testing part, located downstream of the first assembly part, that tests the refrigerant side components. The apparatus includes a second assembling part, located downstream of the loading part, that assembles the cooling water side components of the heat pump. The apparatus includes a second testing part, located downstream of the second assembling part, that tests the cooling water side components. The apparatus includes a finished product part, located downstream of the second testing part, that outputs a finished product.

Abstract: This application discloses a model training method, and relates to the artificial intelligence field. The method includes: obtaining a plurality of training samples, where each training sample includes an image and a text, and the text describes a target object in the image; and inputting the plurality of training samples into a target model, so that the target model performs the following procedure until a preset stop condition is met: extracting an image feature of a first image and a text feature of a first text; obtaining a first loss value based on a difference between a first vector and a second vector, where a dimension of the first vector is the same as a dimension of the second vector; and updating the target model based on the first loss value.