Abstract: Provided is a passive wireless magnetic field characteristic sensing tag and system, and a magnetic field quantity acquisition method, which integrates a passive magnetic field quantity sensor in a passive electronic tag and cooperates with a reader and a host computer to build a magnetic field sensing system, so as to realize high-precision and high-intelligence monitoring of the magnetic field quantity.

Abstract: A network emulation system supporting a flexible and efficient dynamic experiment emulates a network based on container, veth-pair, traffic control (TC), and other technologies and sets a network state management model based on a key-value pair, thereby constructing a network emulation system supporting a flexible and efficient dynamic experiment. The system flexibly realizes the dynamic performance of a plurality of dimensions, namely, dynamic node start/stop, dynamic node attribute configuration, dynamic link start/stop, and dynamic link attribute configuration. Based on the network state management model, the network emulation system provides a concise and unified dynamic application programming interface (API) for an upper layer. Researchers can call the API in their network innovation programs at any time after an emulation network is deployed to achieve efficient, batch-processing, and programmable dynamic management.

Abstract: A multi-level gate driver applied to the SiC metal-oxide-semiconductor field-effect transistor (MOSFET) includes three parts: the SiC MOSFET information detection circuit, the signal level shifting circuit, and the segmented driving circuit. The SiC MOSFET information detection circuit includes the SiC MOSFET drain-source voltage detection circuit and the SiC MOSFET drain-source current detection circuit. The segmented driving circuit includes a turn-on segmented driving circuit and a turn-off segmented driving circuit.

Abstract: A system for quickly determining antibiotic sensitivity of a microorganism comprising a triangular-shaped plate and cover for culturing, recovering, and re-suspending recovered microbial colonies and a second triangular-shaped plate comprising a non-liquid medium cut with concentric trenches over which the re-suspended microbial colonies are distributed by centrifugation and contacted with antimicrobial strips or disks.

Abstract: The present invention provides a recombinant vaccinia virus serving as a clinically usable preventive vaccine for COVID-19 (vaccine for SARS-CoV-2), etc. The recombinant vaccinia virus of the present invention is characterized by comprising the whole or part of cDNA encoding nonstructural proteins or structural protein derived from SARS-CoV-2, and an expression promoter.

Abstract: The present disclosure discloses an MXene-based terahertz wave broadband super-strong absorbing foam, and belongs to the technical field of electromagnetic functional materials. The MXene-based terahertz wave broadband super-strong absorbing foam includes a porous polymer foam and a MXene nanosheet attached onto the porous polymer foam, wherein the MXene nanosheet is attached onto the porous polymer foam in a coating form, a film forming form and a suspension form; the average pore diameter of the porous polymer foam ?500 ?m, the thickness of the porous polymer foam ?10 mm, and the filling mass of the MXene nanosheet is less than 50% of the mass of the absorbing foam.

Abstract: The invention pertains to a method for temporarily conferring advantageous cancer cell phenotypes, such as a higher proliferation rate, resistance to apoptosis and cell death, and resistance to endogenous factors that inhibit cell growth, on non-cancer cells that help repair and regenerate damaged tissues.

Abstract: The invention belongs to the field of electronic ceramics and its manufacturing, in particular to the modified NiTa2O6-based microwave dielectric ceramic material co-sintered at low temperature and its preparation method. Based on the low melting point characteristics of CuO and B2O3, and the radius of Cu2+ ions is similar to that of Ni2+ and Ta5+ ions, the chemical general formula of the invention is designed as xCuO-(1-x)NiO-[7.42y+(xy/14.33)]B2O3—Ta2O5, and the molar content of each component is adjusted from raw materials. The main crystalline phase of NiTa2O6 is synthesized at a lower pre-sintering temperature, and NiTa2O6-based ceramic material with low-temperature sintering characteristics and excellent microwave dielectric properties are directly synthesized at one time, which broadened the application range in LTCC field.

Abstract: A breathing-driven flexible respiratory sensor includes: a test cavity and a digital electrometer, wherein an upper internal wall of the test cavity is provided with an upper detecting component, and a lower internal wall of the test cavity is provided with a lower detecting component; the upper detecting component and the lower detecting component is arranged in a longitudinal symmetry form; wherein the upper detecting component comprises a substrate, an electrode and a gas sensitive film bonded in sequence from top to bottom, and the substrate is bonded to the upper internal wall of the test cavity; wherein a rubber airbag is disposed in the test cavity, and a friction film is bonded to the rubber airbag; an air inlet cylinder is connected to a left end of the rubber airbag, and an air outlet cylinder is connected to a right end of the rubber airbag.

Abstract: In some aspects, the present disclosure provides compounds of the formula: wherein the variables are as defined herein. In some embodiments, these compounds may be used to reduce the consumption of alcohol in a patient. These compounds may be used in treat or prevent alcoholism or an alcohol abuse disorder and show an improved pharmaceutical profile relative to other commonly used compounds.

Abstract: The invention pertains to a medical device: an ECMO (extracorporeal membrane oxygenation) catheter which can be used during right heart and lung failure. It pertains to a dual lumen catheter with a single port of entry which when in place bypasses the right heart and lungs while completing the veno-arterial circuit.

Abstract: An MOFs composite electrode material for supercapacitors includes: a Ni-BSC matrix, and a PEDOT coating layer coated on the Ni-BTC matrix, wherein a molar ratio of EDOT to Ni-BTC is 1:(1-4) based on a molar amount of EDOT monomer. A method for preparing the MOFs composite electrode material includes steps of: using nickel nitrate hexahydrate and benzenetricarboxylic acid as raw materials to synthesize Ni-BTC by a hydrothermal method; and using a liquid phase method to grow PEDOT on a surface of the Ni-BTC. An MOFs composite electrode slurry and a working electrode for the supercapacitors including the above MOFs composite electrode material or a MOFs composite electrode material prepared by the above method are also provided. The MOFs composite electrode material provided by the present invention combines advantages of Ni-BTC and PEDOT.

Abstract: A fish-like underwater robot includes a shell, a driving assembly and an integrated tension and swing component. The integrated tension and swing component includes a plurality of tension ropes and tension elements. Every two adjacent tension elements are connected in series through the plurality of tension ropes. The driving assembly and the integrated tension and swing component are disposed inside the shell. The driving assembly is disposed at a head of the shell. The integrated tension and swing component has an end connected to a tail of the shell and an end connected to the driving assembly. When the fish-like underwater robot is used, the driving assembly drives the integrated tension and swing component to swing to generate power for forward movement. A traditional fish-like tail swing structure is replaced with an integrated tension skeleton structure.

Abstract: A positioning splint for safely and securely positioning a pediatric patient into a lithotomy position. The splint comprises a toroid, wedge-shaped splint having an anterior and posterior jaw which is attached to shoulder straps or a jacket/vest that holds the splint in place during use. The wedge splint and shoulder attachments are padded. The wedge splint may have a disposable covering. Methods of using the splint to position a patient for urinary catheterization as well as for other procedures, exams and surgeries requiring unobstructed access to the perineal and anorectal areas. Additional wrist/hand and ankle/leg straps are used for conscious patients who are uncooperative or incompetent patients or in the case of a patient with involuntary movement disorders.

Abstract: A device for measuring surface temperature of a turbine blade based on a rotatable prism includes a probe, a prism rotating apparatus and an optical focusing apparatus. The prism rotating apparatus and the optical focusing apparatus are located inside the probe. The probe includes a probe outer casing, a probe inner casing, a water-cooled casing pipe, a sapphire window piece, a quartz prism, a light pipe, a collimating lens, a focusing lens and an infrared array detector. The prism rotating apparatus includes a rotary motor, a worm, a gear and a prism rotary table, the rotary motor rotates to drive the prism rotary table to rotate. The optical focusing apparatus includes a telescopic motor, a coupler, a lead screw and a drive rod, the telescopic motor rotates to drive the lead screw, so as to further drive the drive rod to move along the slot.

Abstract: A method for synthesizing (RS)-Warfarin comprising preparing a liquid mixture, wherein the liquid mixture comprises trihexyltetradecylphosphonium bromide, methyl salicylate, acetyl chloride, benzaldehyde, and acetone. The method may further comprise incubating the liquid mixture at a temperature between 20° C. and 30° C. for a time duration between 26 and 34 minutes, and forming (RS)-Warfarin by adding water to the incubated liquid mixture with a volume ratio (water:incubated liquid mixture) between 1:1 and 1.5:1.

Abstract: A bidirectional conduction trench gate power MOS device and a manufacturing method thereof are provided. A gate electrode, a source electrode and a drain electrode are formed on a surface of a silicon wafer to realize a bidirectional conduction and bidirectional blocking power MOS device used in an application environment such as lithium battery BMS protection.

Abstract: A system for detecting COVID-19 infection, including a colorimetric sensor, an image-capturing device, and a processing unit. The colorimetric sensor includes an array of chemical receptors configured to be exposed to exhaled breath of a person suspected to be infected by COVID-19 virus. The array of chemical receptors includes an array of metalloporphyrazines, an array of organic dyes, an array of metalloporphyrins, an array of metal ion complexes, and an array of functionalized gold nanoparticles (AuNPs). The processing unit is configured to perform a method utilizing the image-capturing device. The method includes capturing a first image from the array of chemical receptors before exposure to exhaled breath, capturing a second image from the array of chemical receptors after exposure to exhaled breath, and detecting COVID-19 infection status of the person by analyzing color changes of the array of chemical receptors in the second image respective to the first image.

Abstract: A method for manufacturing a semiconductor device is provided. A drift region and a compensation region are formed through a deep trench etching and a filling technology. A plurality of modulation doping regions are formed at a top of the drift region by an epitaxy and an ion implantation. A modulation region is introduced, wherein the modulation region flexibly modifies capacitance characteristics and achieve improved dynamic characteristics.

Abstract: A copper nanocatalyst, a method for preparing the copper nanocatalyst, and an application of the copper nanocatalyst in the synthesis of acetate or ammonia are provided. The copper nanocatalyst includes a substrate and an active agent loaded on the substrate. The method includes: preparing a cleaning agent by using an ethanol and a deionized; immersing the active agent in the cleaning agent, ultrasonically cleaning for 5-10 min at a frequency of 4×104 Hz-8×104 Hz, and drying for later use; mixing the cleaned active agent and a conductive binder according to a mass ratio of 1:19-9:1 of the active agent to the conductive binder, adding the ethanol, and fully stirring and dispersing to obtain a slurry; coating the slurry on a surface of the carbon paper, and drying the carbon paper by blowing through nitrogen flow to obtain the catalyst.