Abstract: A blood pressure prediction method and apparatus, an electronic device, and a computer-readable storage medium. The method includes: synchronously collecting physiological signals, the physiological signals include electrocardiogram signals, pulse signals and heart sound signal; extracting features from the physiological signals to obtain signal features, the signal features include pre-ejection duration and pulse wave transit time; and inputting the signal features into a pre-trained blood pressure prediction model to cause the blood pressure prediction model to output a blood pressure prediction result.

Abstract: The present invention relates to the technical field of bone processing, and in particular to a composite device for autologous bone harvesting and bone processing, including: a bone harvesting auxiliary device and a bone processing device. The bone harvesting auxiliary device includes: a bone harvesting caliper, a guide sleeve, and a depth-limiting Kirschner wire. The bone processing device includes: a bone box, a fastening assembly, and a cutting assembly. The composite device for autologous bone harvesting and bone processing in the present invention is capable of precise harvesting based on preoperative imaging measurements, thereby preventing resource waste. Intraoperatively, the device can obtain cancellous bone, unicortical bone, bicortical bone, and tricortical bone. In addition, various finished bone products of different shapes and sizes can be prepared according to requirements for a bone grafting area, such as bone granules, bone strips, bone chips, and bone blocks.

Abstract: A heart sound signal quality assessment method includes: acquiring a heart sound signal, extracting a feature from the heart sound signal to obtain a signal feature, inputting the signal feature into a pre-trained signal quality assessment model, and outputting a signal quality assessment result. The signal feature includes one or more of a local variance feature, a local peak feature, a signal energy feature, and a zero-crossing rate feature.

Abstract: A heart sound segmentation method includes: synchronously collecting physiological signals, the physiological signals include heart sound signals; obtaining a segmentation threshold corresponding to the heart sound signal, and segmenting the heart sound signal based on the segmentation threshold to obtain a first heart sound and a second heart sound; and determining a systolic duration and a diastolic duration of the heart sound signal according to the first heart sound and the second heart sound.

Abstract: A negative pressure wound therapy device comprises a cover, and a base. The cover includes an inner side and an outer side. One or more connectors are disposed on the outer side. The base includes an upper side and an under side. The device further includes a plurality of posts in between the cover and the base. The base is configured with a plurality of orifices. The cover and the base are integrated to form a pocket. At least one of the one or more connectors is a drainage connector for draining liquid out of the pocket. The wound therapy device is configured to connect to a vacuum machine to drain the pocket through the drainage connector. The wound therapy device is efficient and durable, safe and comfortable, and is convenient to use and manage.

Abstract: This application discloses a comprehensive treatment method for salinized soil in semi-arid region, comprises: stripping and collecting the topsoil; spreading sandy soil and/or loess soil as a imported soil layer; spreading an anti-seepage layer, a salt barrier layer and a membrane layer successively on the imported soil layer; mixing clay into the topsoil to obtain mixed soil; blending saline-alkali land conditioner with the mixed soil to obtain planted soil; spreading the planted soil on the membrane layer to obtain a planting layer. The method combines physical, hydraulic, chemical and biological remediation methods to comprehensively manage saline-alkali soil in semi-arid areas. It consumes less water resources, has a shorter treatment cycle, shows quick results, is conducive to plant growth, and can effectively inhibit the return of salt.

Abstract: An inductor current estimation method for a DC-DC switching power supply using a voltage sampling module, a data conversion module, a switching signal counting module, an inductor voltage calculation module and a digital filter module, comprising: processing an input voltage and an output voltage by the voltage sampling module and the data conversion module to obtain a converted input voltage and a converted output voltage which have a same number of bits; comparing a node voltage with a reference voltage, and then obtaining a duty cycle by the switching signal counting module; and then, outputting an average voltage of two terminals of an inductor and a parasitic resistor by the inductor voltage calculation module, and finally, obtaining an estimated inductor current by the digital filter module.

Abstract: An inductor current estimation method for a DC-DC switching power supply using a voltage sampling module, a data conversion module, a switching signal counting module, an inductor voltage calculation module and a digital filter module, comprising: processing an input voltage and an output voltage by the voltage sampling module and the data conversion module to obtain a converted input voltage and a converted output voltage which have a same number of bits; comparing a node voltage with a reference voltage, and then obtaining a duty cycle by the switching signal counting module; and then, outputting an average voltage of two terminals of an inductor and a parasitic resistor by the inductor voltage calculation module, and finally, obtaining an estimated inductor current by the digital filter module.

Abstract: Semiconductor structures and fabrication methods thereof are provided. The method may include providing a to-be-etched layer; forming a plurality of core layers on the to-be-etched layer, wherein a first opening and a second opening are formed between different adjacent core layers and a width of the first opening is smaller than a width of the second opening; forming a first sacrificial material layer on the to-be-etched layer and the plurality of core layers; forming a second sacrificial layer on a portion of the first sacrificial material layer in the first opening to form a sacrificial structure in the first opening; removing the plurality of core layers after forming the sacrificial structure; forming sidewall spacers on sidewall surfaces of the sacrificial structure after removing the plurality of core layers; and removing the sacrificial structure after forming the sidewall spacers.

Abstract: Exemplary embodiments of the present invention provide for an apparatus, computer-accessible medium, system and method for detection, analysis and use of fetal heart rate and movement. In accordance with certain exemplary embodiments of the present disclosure, an exemplary system can include: at least one electrocardiogram sensor providing first signals or information regarding the at least one subject; a plurality of inertial measurement units providing second signals or information regarding the at least one subject; a plurality of acoustic sensors providing third signals or information regarding the at least one subject; and a processor, wherein the processor is configured to determine data regarding the fetal heart rate based on the first, second and third signals or information.

Abstract: Semiconductor structures and fabrication methods thereof are provided. The method may include providing a to-be-etched layer; forming a plurality of core layers on the to-be-etched layer, wherein a first opening and a second opening are formed between different adjacent core layers and a width of the first opening is smaller than a width of the second opening; forming a first sacrificial material layer on the to-be-etched layer and the plurality of core layers; forming a second sacrificial layer on a portion of the first sacrificial material layer in the first opening to form a sacrificial structure in the first opening; removing the plurality of core layers after forming the sacrificial structure; forming sidewall spacers on sidewall surfaces of the sacrificial structure after removing the plurality of core layers; and removing the sacrificial structure after forming the sidewall spacers.

Abstract: The present invention discloses amphiphilic nonsteroid anti-inflammatory platinum nanoparticles, preparation methods therefor and applications thereof. The amphiphilic nonsteroid anti-inflammatory platinum nanoparticle includes an amphiphilic complex formed by coordinating a nonsteroid anti-inflammatory drug and a platinum antitumor drug. Compared with other platinum drugs, the amphiphilic nonsteroid anti-inflammatory platinum prepared according to the present invention can self-assemble into a nanoparticle in an aqueous solution without the addition of an additive or a surfactant. The amphiphilic platinum complex can achieve targeted accumulation of tumor tissues by means of the enhanced permeability and retention effect of the tumor tissues, thereby reducing the side effects of platinum drugs.

Abstract: A cooling system for a dental porcelain furnace speeds up the cycle time for the furnace.

Abstract: An automatic menu display, service request, order entry and management system used in restaurant comprises of a central server, Electronic Assistant Terminals (EAT) and service location terminals. The central server synchronizes the menu display, dispatches service requests and order entries to appropriate service locations, including kitchen, cashier, service desk and bar. All the information related to sales and requests are stored in a database located on the central server. The Electronic Assistant Terminals display image or text menu, transmit service requests and order entries as well as display summarized customers' order statement and bill statements. The EATs are placed on each table adjacent to each seat, talking to the center control server through wireless connection. The service location terminals include service desk terminals, kitchen terminals, cashier terminals and office terminals. Service desk terminals prompt the request contents, such as drinks, foods, special services, and their origins.