Abstract: The present disclosure provides a fiber membrane and a preparation method and use thereof, and belongs to the field of biological materials. The fiber membrane includes a fiber with a core-shell structure, where a core of the fiber includes simvastatin and a first spinnable polymer, and a shell of the fiber includes hydroxyapatite and a second spinnable polymer. In the fiber, a release of the simvastatin mainly depends on a rate of water invasion. After water invades the fiber, the simvastatin in the fiber leaves the fiber with the diffusion of water. In the present disclosure, a barrier function of the shell prevents moisture from entering the core. Therefore, the simvastatin in the core cannot leave the fiber with the diffusion of water molecules in an early stage, and a release rate of drugs is slowed down in the early stage, thereby controlling sustained release of the drugs.

Abstract: The present disclosure provides a hydrophilic fiber membrane with a sustained-release drug, and belongs to the field of biological materials. The present disclosure provides a hydrophilic fiber membrane with a sustained-release drug, including a fiber with a core-shell structure, where a core of the fiber includes curcumin and a first spinnable polymer, and a shell of the fiber includes polyethylene glycol and a second spinnable polymer; and in the shell, the polyethylene glycol and the second spinnable polymer have a mass ratio of not greater than 1:12. In the present disclosure, the fiber membrane has a core-shell structure, the curcumin is provided in the core, and the shell prevents a rapid release of the curcumin in an early stage, thereby delaying a release rate of the curcumin to prevent the drug from forming a burst release in the early stage and causing toxic reactions.

Abstract: A process, product, and system for detecting a defective vacuum in a packaged product. The process may include providing a packaged product including a product enclosed within a packaging article. The packaging article may include a film having at least one layer containing a fluorescence-based indicator. The process may further include exposing the packaged product to incident electromagnetic energy to produce an excited fluorescence-based indicator, such that the excited fluorescence-based indicator emits fluorescent electromagnetic energy; and determining, based on the fluorescent electromagnetic energy emitted by the excited fluorescence-based indicator, that gas is present within the packaging article.

Abstract: The disclosure provides an approach for detecting and preventing attacks in a network. Embodiments include determining a plurality of network behaviors of a process by monitoring the process. Embodiments include generating a plurality of intended states for the process based on subsets of the plurality of network behaviors. Embodiments include determining a plurality of intended state clusters by applying a clustering technique to the plurality of intended states. Embodiments include determining a state of the process. Embodiments include identifying a given cluster of the plurality of intended state clusters that corresponds to the state of the process. Embodiments include selecting a novelty detection technique based on a size of the given cluster. Embodiments include using the novelty detection technique to determine, based on the given cluster and the state of the process, whether to generate a security alert for the process.

Abstract: The continuity of a functional layer of a web (32, 60, 78) is assessed by forwarding the web, detecting (42, 63) the presence of the functional layer and a discontinuity and/or a thin region in the functional layer, and generating a signal in response to the discontinuity and/or thin region. The functional layer comprises a detectable component (360) in a thermoplastic composition. The detecting is carried out by a machine vision system capable of detecting the detectable component (360) in the functional layer. The detectable component (360) can be active or passive. Also included are systems for carrying out the process.

Abstract: A process for monitoring seal quality of a packaging article. In one embodiment, the process for monitoring the seal quality includes sealing a film to form packaging article and forming a seal area. The seal area is analyzed by a vision system to acquire image data of the seal area. A vision inspection engine analyzes the image date to determine the continuity of the seal, the strength of the seal, or both.

Abstract: Disclosed is a permanent magnet direct-drive slurry pump based on gas film drag reduction, which includes a permanent magnet motor, a main shaft, an impeller, and a valve block. The permanent magnet motor includes a housing, a stator core, stator windings, a rotor core, and a permanent magnet. The rotor core and the impeller share the main shaft, and an airflow channel is provided inside the main shaft. The impeller includes a front cover plate, a back cover plate, and blades. The blades are modularly manufactured, and blade gas jet holes and hemispherical pits are provided on the pressure surface. The airflow channel in the main shaft is communicated with the blade gas-jet holes. The valve block is disposed at the tail end of the main shaft so as to control gas exhaust and prevent liquid from entering the shaft. The present invention has such advantages as a small size, high efficiency, and strong wear resistance.

Abstract: Disclosed is a permanent magnet direct-drive slurry pump based on gas film drag reduction, which includes a permanent magnet motor, a main shaft, an impeller, and a valve block. The permanent magnet motor includes a housing, a stator core, stator windings, a rotor core, and a permanent magnet. The rotor core and the impeller share the main shaft, and an airflow channel is provided inside the main shaft. The impeller includes a front cover plate, a back cover plate, and blades. The blades are modularly manufactured, and blade gas jet holes and hemispherical pits are provided on the pressure surface. The airflow channel in the main shaft is communicated with the blade gas-jet holes. The valve block is disposed at the tail end of the main shaft so as to control gas exhaust and prevent liquid from entering the shaft. The present invention has such advantages as a small size, high efficiency, and strong wear resistance.

Abstract: A method includes: determining, a first pixel in a receiving field of view of a radar and N sampling point sets in an echo signal corresponding to the first pixel; estimating an estimated distance between the radar and a target object based on each first sampling point set of the N sampling point sets, and determining, based on each estimated distance, M cumulative receiving fields of view in a one-to-one correspondence with M data frames; determining a second sampling point set in echo signals corresponding to Q neighboring pixels, and superposing each first sampling point set and the corresponding second sampling point set to obtain an echo signal that corresponds to the first pixel and that is obtained; and calculating an actual distance between the radar and the target object based on the echo signal obtained after superposition processing.

Abstract: An echo signal processing method includes receiving echo signals, in different directions, including a first echo signal and a second echo signal, and the first echo signal and the second echo signal are received, determining a first inflection point from the first echo signal, determining a second inflection point from the second echo signal, determining whether a time difference between a first moment at which the first inflection point is received from the first echo signal and a second moment at which the second inflection point is received from the second echo signal is less than a preset threshold, and combining the first echo signal and the second echo signal when the time difference is less than the preset threshold.

Abstract: A ranging method includes obtaining a first echo signal that is obtained after laser light emitted by a laser to a measured object is reflected by the measured object, determining that the first echo signal is a saturated echo signal, calculating an initial distance using a receiving moment of the first echo signal, determining a target distance compensation value corresponding to a saturation degree of the first echo signal, compensating, using the target distance compensation value and in a distance compensation manner, the initial distance, and setting a distance obtained after compensation as a measured distance between the measured object and the laser.

Abstract: A ranging method includes determining a pixel matrix based on a received echo signal, determining a first amplitude value set based on a first pixel, determining a second pixel based on the first pixel, determining, based on the second pixel, a second amplitude value set based on the second pixel, performing a summation on a target first amplitude value set and a target second amplitude value set, obtaining a target ranging set based on all first amplitude value sets and all second amplitude value sets, and performing a ranging based on the target ranging set to improve a signal-to-noise ratio of an accumulated amplitude value set and a ranging accuracy.

Abstract: A ranging method and apparatus are provided. The method includes processing, by a ranging device, an echo signal of a detection signal based on a time-to-digital conversion ranging manner to determine a first data set. The echo signal is processed based on an analog-to-digital conversion ranging manner to determine a second data set. An output distance set is determined based on at least one parameter in the first data set or the second data set, and one or more of the following relationships: a relationship between at least one of an actual transmit power of the detection signal and a preset power threshold, a relationship between at least one estimated distance and a preset distance threshold, or a relationship between at least one signal parameter of the echo signal and a preset parameter threshold.

Abstract: The disclosure provides an approach for detecting and preventing attacks in a network. Embodiments include determining a plurality of network behaviors of a process by monitoring the process. Embodiments include generating a plurality of intended states for the process based on subsets of the plurality of network behaviors. Embodiments include determining a plurality of intended state clusters by applying a clustering technique to the plurality of intended states. Embodiments include determining a state of the process. Embodiments include identifying a given cluster of the plurality of intended state clusters that corresponds to the state of the process. Embodiments include selecting a novelty detection technique based on a size of the given cluster. Embodiments include using the novelty detection technique to determine, based on the given cluster and the state of the process, whether to generate a security alert for the process.

Abstract: A process, product, and system for detecting a defective vacuum in a packaged product. The process may include providing a packaged product including a product enclosed within a packaging article. The packaging article may include a film having at least one layer containing a fluorescence-based indicator. The process may further include exposing the packaged product to incident electromagnetic energy to produce an excited fluorescence-based indicator, such that the excited fluorescence-based indicator emits fluorescent electromagnetic energy; and determining, based on the fluorescent electromagnetic energy emitted by the excited fluorescence-based indicator, that gas is present within the packaging article.

Abstract: The continuity of a functional layer of a web (32, 60, 78) is assessed by forwarding the web, detecting (42, 63) the presence of the functional layer and a discontinuity and/or a thin region in the functional layer, and generating a signal in response to the discontinuity and/or thin region. The functional layer comprises a detectable component (360) in a thermoplastic composition. The detecting is carried out by a machine vision system capable of detecting the detectable component (360) in the functional layer. The detectable component (360) can be active or passive. Also included are systems for carrying out the process.

Abstract: An electronic flow monitor, a control method and an anesthesia machine. The electronic flow controller can comprise a control module, an oxygen gas branch for delivering oxygen gas, an equilibrium gas branch for delivering equilibrium gas, and a gas mixing branch for mixing the oxygen gas and the equilibrium gas. The control module can meter an oxygen gas flow and an equilibrium gas flow through flow sensors. A first flow controller can be disposed in the oxygen gas branch, and a second flow controller can be disposed in the equilibrium gas branch. The first flow controller may be used to regulate the gas flow in the oxygen gas branch between zero and a maximum value and the second flow controller may be used to regulate the gas flow in the equilibrium gas branch between zero and a maximum value.

Abstract: The present invention relates a packaging structure including: a carrier board and a cementing layer on the surface of the carrier board; chips and passive devices having functional side thereof attached to the cementing layer; and a sealing material layer for packaging and curing, the sealing material being formed on the carrier board on the side attached to the chips and the passive devices. The present invention integrates chips and passive devices and then packages the chips and the passive devices together, and is therefore a packaged product having not single-chip functionality but integrated-system functionality. The present invention is highly integrated, reduces interfering factors such as system-internal electric resistance and inductance, and accommodates growing demand for lighter, thinner, shorter, and smaller semiconductor packaging.

Abstract: An electronic flow monitor, a control method and an anesthesia machine. The electronic flow controller can comprise a control module, an oxygen gas branch for delivering oxygen gas, an equilibrium gas branch for delivering equilibrium gas, and a gas mixing branch for mixing the oxygen gas and the equilibrium gas. The control module can meter an oxygen gas flow and an equilibrium gas flow through flow sensors. A first flow controller can be disposed in the oxygen gas branch, and a second flow controller can be disposed in the equilibrium gas branch. The first flow controller may be used to regulate the gas flow in the oxygen gas branch between zero and a maximum value and the second flow controller may be used to regulate the gas flow in the equilibrium gas branch between zero and a maximum value.

Abstract: The present invention relates a packaging structure including: a carrier board and a cementing layer on the surface of the carrier board; chips and passive devices having functional side thereof attached to the cementing layer; and a sealing material layer for packaging and curing, the sealing material being formed on the carrier board on the side attached to the chips and the passive devices. The present invention integrates chips and passive devices and then packages the chips and the passive devices together, and is therefore a packaged product having not single-chip functionality but integrated-system functionality. The present invention is highly integrated, reduces interfering factors such as system-internal electric resistance and inductance, and accommodates growing demand for lighter, thinner, shorter, and smaller semiconductor packaging.