Abstract: The present invention relates to an oxide glass composition having a low dielectric constant and dielectric dissipation factor. The oxide glass composition according to the present invention can provide a glass material for PCBs, glass fibers and glass substrates having a low dielectric constant and dielectric dissipation factor properties. The oxide glass composition according to the present invention has a low softening temperature and excellent clarification characteristics, and thus can solve various problems of existing technologies.

Abstract: Systems, devices, and methods for delivering one or multiple materials into a body space (e.g., to occlude the body space) and/or for removing one or multiple materials from a body space (e.g., to open or reopen the body space) are described. Delivering material into the vas deferens of the male reproductive tract for contraception, removing material from the vas deferens to restore patency of the vas deferens, delivering material into the fallopian tubes of the female reproductive tract for contraception, and removing material from fallopian tubes to restore patency of the fallopian tubes is described. Confirming access to a body space is described. Agitating materials in a body space is described. Creating turbulence in a body space is described.

Abstract: The disclosure discloses a conversation-based recommending method. A directed graph corresponding to a current conversation is obtained. The current conversation includes clicked items, the directed graph includes nodes and directed edges between the nodes, each node corresponds to a clicked item, and each directed edge indicates relationship data between the nodes. For each node of the directed graph, an attention weight is determined for each directed edge corresponding to the node based on a feature vector of the node and the relationship data for each node of the directed graph. A new feature vector of the node is determined based on the relationship data and the attention weight of each directed edge. A feature vector of the current conversation is determined based on the new feature vector of each node. An item is recommended based on the feature vector of the current conversation.

Abstract: Embodiments relate to a Brillouin distributed optical fiber sensor including a first light source to output a first light having a modulated intensity at a preset frequency, an optical modulation unit to generate Brillouin probe light and Brillouin pump light using the first light and apply the Brillouin probe light and the Brillouin pump light to one end and the other end of a test optical fiber, respectively, a second light source to apply a second light with a frequency that is different from a frequency of the first light to one end of the test optical fiber in a direction opposite to the Brillouin pump light, and an optical detection unit to detect Brillouin scattered light generated by interaction between the Brillouin pump light and the Brillouin probe light in the test optical fiber.

Abstract: The disclosure provides a method for training a semantic retrieval network, an electronic device and a storage medium. The method includes: obtaining a training sample including a search term and n candidate files corresponding to the search term, where n is an integer greater than 1; inputting the training sample into the ranking model, to obtain n first correlation degrees output by the ranking model, in which each first correlation degree represents a correlation between a candidate document and the search term; inputting the training sample into the semantic retrieval model, to obtain n second correlation degrees output by the semantic retrieval model, wherein each second correlation degree represents a correlation between a candidate document and the search term; and training the semantic retrieval model and the ranking model jointly based on the n first correlation degrees and the n second correlation degrees.

Abstract: Disclosed are a strain of Lactobacillus helveticus capable of removing multiple heavy metals and an application thereof in milk powder, where the strain is Lactobacillus helveticus KD-3, which is deposited in the China Center for Type Culture Collection on Apr. 6, 2023, with a deposit number of CCTCC NO: M2023479. The Lactobacillus helveticus KD-3 has a cadmium resistant gene czcD, a chromium resistant gene chrA and a lead resistant gene pbrT, and is capable of tolerating single and compound heavy metals (cadmium, chromium and lead). The Lactobacillus helveticus KD-3 of the present disclosure is used to prepare lyophilized bacterial powder.

Abstract: An enricher, an enrichment system, a sample manufacturing system, and a sample detection system. The enricher comprises an enrichment housing, which encloses to form an enrichment cavity used for accommodating a suction liquid; a suction connection part, which is used to place a suction mechanism in communication with the enrichment cavity so that the enrichment cavity forms negative pressure under a vacuumization mechanism; and a blocking member, which is disposed on the enrichment housing; when the enrichment cavity forms negative pressure, a sample can, by means of the blocking member, form a suction liquid that enters the enrichment cavity, and a retentate remains on the blocking member.

Abstract: An embodiment rehabilitation robot control apparatus includes a brainwave signal measuring device configured to measure a brainwave signal of a user, a preprocessing device configured to preprocess the measured brainwave signal, a classification device configured to classify a motor intention of the user based on the brainwave signal preprocessed by the preprocessing device, and a controller configured to reflect the motor intention of the user in real time to control an operation or a stop of a rehabilitation robot.

Abstract: A method for analyzing environmental sounds to identify repeating noises due to power equipment for purposes of controlling noise pollution is disclosed. Ambient sounds are sampled with microphones and the resulting data analyzed by an edge computing device. The samples are compared to stored data with a convolutional neural network by the edge computing device which also performs pitch shifting and cycle shifting to reduce false negatives. Positive results are reported via LoRa and/or 4G to a cloud platform and/or backend server.

Abstract: Provided is a high-durability coloring metal member. The high-durability coloring metal member includes a metal substrate, a dielectric layer provided on the metal substrate, and an oxynitride compound layer provided on the dielectric layer. The metal member is capable of expressing vivid and various colors with a color protection layer applied on the surface of the metal member.

Abstract: A scale thickness estimating system according an embodiment includes: a fluid temperature acquiring unit that acquires a temperature of a fluid flowing in a pipe; a flow path outer surface-temperature acquiring unit that acquires a temperature of an outer surface of the pipe; a heat flux acquiring unit that acquires a heat flux on the outer surface of the pipe; a flow path wall-thermal conductivity acquiring unit that acquires a flow path wall thermal conductivity of the pipe; a scale thermal conductivity acquiring unit that acquires a scale thermal conductivity of scale depositing on an inner surface of the pipe; and a scale thickness estimating unit that estimates a thickness of the scale based on the temperature of the fluid, the temperature of the outer surface, the heat flux, the flow path wall thermal conductivity, and the scale thermal conductivity.

Abstract: A layered interception contaminated soil sampling apparatus, including a fixed bracket and a lifting platform, the lifting platform being arranged on the top of the fixed bracket and fixedly connected to the fixed bracket; the layered interception contaminated soil sampling apparatus further including: a sample taking apparatus, arranged below the lifting platform, the top of the sample taking apparatus being fixedly connected to a movable end of the lifting platform, the sample taking apparatus being used to take a soil sample; a storage apparatus, arranged inside the fixed bracket, the storage apparatus being fixedly connected to the inside of the fixed bracket and used to store a sample taking device and samples taken; and a fixed base, arranged at the bottom of the fixed bracket and fixedly connected to the fixed bracket.

Abstract: The disclosure provides a convolution operation accelerator and a convolution operation method and belongs to the field of microelectronic devices. Input data of each word line may be subjected to a multiply-accumulate operation together with two upper and lower layers of convolution kernel units, so that natural sliding of the convolution kernel units in a y direction in two-dimensional input is achieved. The oblique bit lines and multiple copies of a convolution kernel in each layer of a non-volatile memory array may enable a multiplication operation between one piece of input data and convolution kernel data at different positions in the same convolution kernel. In this way, the natural sliding of the convolution kernel units in an x direction in the two-dimensional input is achieved.

Abstract: A multi-lead electrocardiogram (ECG) signal classification method based on self-supervised learning relates to the technical field of ECG signal classification. The method includes: processing an original signal through different data augmentation methods, designing an appropriate encoder module, extracting a feature of an ECG signal through a large amount of easily available unlabeled data such that an encoder learns more class information of the ECG signal, fine-tuning the model encoder with a small amount of labeled data for feature optimization, and continuously optimizing a parameter of a feature extractor by training a model such that a generated feature well reflects a structure and information of input data. Through self-supervised learning, the method reduces obstacles caused by performing ECG signal classification through a large amount of expensive manually labeled data, improving the generalization ability of the model.

Abstract: Disclosed are an apparatus for managing quantum keys and a method of operating the same to rapidly and flexibly provide quantum keys for network services by effectively and efficiently distributing quantum keys in a quantum-secured network.

Abstract: An offshore wind turbine with anti-accumulation of aquatic organisms, comprising: a base with an interior space, the base being made of conductive material; a tower incorporated above the base; a nacelle, connected to the tower; a plurality of blades, each interconnected with the nacelle; and a power supply system electrically connected to the base and disposed within the interior space, the power supply system being used to provide electrical energy to the base to energize the surface of the base to form an electric field.

Abstract: Reader and plate methods, operations, and systems for observing a biological sample are shown and described. In one embodiment, a device for observing biological growth, when present, on a growth plate, includes an imaging device and a variable positioning nest. The nest may include a first sunken frame to receive a first growth plate, and an offset second sunken frame to receive a distinct second growth plate in an operating position offset about the first operating position.

Abstract: This invention relates to a lint free absorbent wound dressing, comprising a plasticized blend of a natural biopolymer and poly vinyl alcohol mixed in an acidic solvent which is neutralized and crosslinked using green crosslinking buffer system, finding application in exudating and bleeding wounds.

Abstract: An electronic system for transmitting and receiving internal data through an optical channel. The electronic system may include a light emitter configured to generate a first optical signal, a first device configured to receive the first optical signal and including a transmitter configured to output a second optical signal representing a transmission value based on the first optical signal, a second device including a first receiver configured to receive the second optical signal from the first device and output a third optical signal by adjusting a light intensity of the second optical signal, and configured to read the transmission value based on the light intensity of the second optical signal, and a third device including a second receiver configured to receive the third optical signal from the second device, and configured to read the transmission value based on a light intensity of the third optical signal.

Abstract: This invention relates to a new and distinct variety of strawberry plant named ‘PS-13.467.089’. This new strawberry plant named ‘PS-13.467.089’ is primarily adapted to the growing conditions of the central coast of California, and is primarily characterized by its fruit that is orange red to red in color, medium in size and very uniformly shaped; its fruit has very good flavor with the seeds held even with the surface of the fruit; the plant is very large in size, very early fruiting with very high yields; its foliage is light yellow green in color, medium in size with three leaflets; its fruiting trusses are typically held level to beneath the foliage, with weak pubescence and strong anthocyanins; and the plant is resistant to Fusarium wilt.