Abstract: A method for analyzing signal irregularity of radiation in a lightning leader is provided, which relates to a field of lightning signal processing and includes: S1: acquiring electric field signals; S2: dividing the electric field signals into multiple segments according to time, and calculating an average sample entropy value of each segment of the electric field signals; S3: dividing the multiple segments of electric field signals into three regions according to the time, quantifying irregularity of radiation of the three regions in the leader according to sample entropies and performing classification based on numerical variation characteristics of the irregularity; S4: comparing the classified data with lightning positioning data to form an analysis database; and S5: acquiring real-time electric field signals, calculating average sample entropy values of the electric field signals, and predicting development characteristics of irregular radiation in the lightning leader.

Abstract: A chronic pain Internet plus management platform is provided to perform file management for patients with chronic diseases by taking multi-dimension and multi-level information about patients as a starting point for chronic disease diagnosis, taking respective hospitals and home personal mobile devices as an information collecting media and integrating with an Internet chronic disease cloud database, thereby realizing AI-assisted screening, and intelligent analysis and prediction of health risks. Anew mode for chronic pain management is established by the new generation of information technology, such as mobile Internet, cloud computing and big data; meanwhile, self-management of the patient is assisted by the mode for chronic pain management to improve prognosis of chronic pain.

Abstract: A method for analyzing signal irregularity of radiation in a lightning leader is provided, which relates to a field of lightning signal processing and includes: S1: acquiring electric field signals; S2: dividing the electric field signals into multiple segments according to time, and calculating an average sample entropy value of each segment of the electric field signals; S3: dividing the multiple segments of electric field signals into three regions according to the time, quantifying irregularity of radiation of the three regions in the leader according to sample entropies and performing classification based on numerical variation characteristics of the irregularity; S4: comparing the classified data with lightning positioning data to form an analysis database; and S5: acquiring real-time electric field signals, calculating average sample entropy values of the electric field signals, and predicting development characteristics of irregular radiation in the lightning leader.

Abstract: The invention provides use of epalrestat in preparation of pancreatic cancer drugs. The pancreatic cancer drugs are used for inhibiting secretion of exosomes from pancreatic cancer cells. The invention also provides a method for verifying the inhibition effect of epalrestat on secretion of exosomes from pancreatic cancer cells. The method includes steps of: extracting cell supernatant exosomes by using a low-temperature ultracentrifugation method; lysing the collected exosomes, then using a BCA kit to quantify the resulting exosomal protein, and using the measured amount of the protein to reflect the amount of the exosomes; using a transmission electron microscope to verify a double-layer lipid membrane wrapped cup-shaped structure of the exosomes; and detecting exosome protein concentration by protein polyacrylamide gel electrophoresis with Coomassie brilliant blue. The invention provides a novel use of epalrestat, namely the inhibition of exosome secretion.

Abstract: A compact microwave distributed-element dual-mode bandpass filter is provided, comprising a dual-mode resonator and a signal input port and a signal output port coupled electrically to the dual-mode resonator respectively; wherein, the dual-mode resonator comprises a main stripline with a center-loaded short-circuited stub, the main stripline is reasonably folded in both vertical and horizontal directions and is reasonably folded into a first layer, a second layer, a third layer and a fourth layer; a symmetrical plane is provided between the second layer and the third layer, while the first layer and the fourth layer are symmetrical to each other relative to the symmetrical plane, the second layer and the third layer are symmetrical to each other relative to the symmetrical plane as well; the center-loaded short-circuited stub is located on the symmetrical plane, and the symmetrical plane can be treated as a virtual ground at odd-mode resonant frequency.

Abstract: The present invention provides a wideband frequency tunable ring resonator, wherein, comprises a closed ?g/2 transmission line and two variable capacitors with tunable capacitance, the ?g/2 transmission line is axisymmetric around a central line, first ends of the two variable capacitors are respectively connected to two intersection points of the ?g/2 transmission line and the central line, the second ends of the two variable capacitors are respectively grounded. By implementing the technical solution of present invention, following technical effects are obtained. The fundamental resonant frequency (ffund) can be shifted up and down by controlling the respective values of the two loading capacitors, resulting in a bi-directional tuning of ffund. As a result, the tuning range of this invention can be approximately doubled as compared with the conventional tunable ring resonator.

Abstract: A microwave frequency tunable filtering balun is provided. The microwave frequency tunable filtering balun comprises a first microwave split ring transmission line resonator and a second microwave split ring transmission line resonator arranged in a bilaterally symmetrical manner, a fourth variable capacitor and a fifth variable capacitor of same parameters. It combines two functions of balun and tunable bandpass filter (BPF) into one circuit, resulting in a compact design. The balun characteristic and frequency-tuning mechanism are investigated, and the design equations are derived.

Abstract: A telescopic sighting device includes a tubular scope, an objective lens, an ocular assembly, and a laser locator. The objective lens is mounted at a bell portion of the tubular scope for focusing light at a focal point in the body portion of the tubular scope. The ocular assembly is provided at an eyepiece portion of the tubular scope for magnifying the light from focused at the focal point. Furthermore, the laser locator is mounted at the bell portion of the tubular scope at a position adjacent to the objective lens, and comprises a laser emitter arranged to generate a laser beam toward a target, in such a manner that a user is able to observe a laser indicator produced by the laser beam on the target through the ocular assembly so as to enhance an accuracy of locating the target by the telescopic sighting device.

Abstract: Methods and equipment used to regenerate sensory, motorial, or visceral signals of injured, broken or diseased nerves of mammalia, such as humans, are provided. In some embodiments, a lineup of downward and upward channels to bridge injured neural channels is disclosed. The downward or upward channels can be connected to electrodes which are in contact with upper or lower nerve stumps. The channels can be used to detect, amplify, and recognize the motorial or sensory signals, to generate related Functional Electrical Stimulation (FES) signals, and to supply the FES signals to the electrodes on the lower or upper nerve stumps. Neural signals can thus be regenerated and the injured motorial or sensory channels can be bridged.