Abstract: A card reader with a protective mechanism includes an upper shell, a lower shell, a protective mechanism and a circuit board assembly. An upper portion of a front end of the upper shell slantwise extends downward and rearward, and then is bent rearward to form an upper extending portion. A lower portion of the front end of the upper shell extends rearward to form a lower extending portion. The upper extending portion is spaced from the lower extending portion to form an inserting passageway between the upper extending portion and the lower extending portion. The lower shell is mounted to a bottom surface of the upper shell. The protective mechanism is disposed between the upper shell and the lower shell. The circuit board assembly is disposed between the upper shell and the lower shell.

Abstract: A composite structure includes a dielectric layer, a two-dimensional graphene layer and a carbon quantum dot film. The dielectric layer is disposed on a first surface of a silicon substrate. The two-dimensional graphene layer is disposed on the dielectric layer. The carbon quantum dot film is disposed on the two-dimensional graphene layer.

Abstract: A method for detecting an analyte comprises the following steps: providing a SERS-active substrate and a Raman spectra database; applying a sample onto the SERS-active substrate; applying an incident light by a Raman spectrometer onto the SERS-active substrate to generate a Raman spectrum of the sample; and comparing the Raman spectrum of the sample with a Raman spectra database to identify an analyte in the sample. The SERS-active substrate comprises: a support; a first dielectric layer disposed on the support, wherein the first dielectric layer is formed by a plurality of first nanofibers; and a plurality of noble metal particles formed on the plurality of first nanofibers.

Abstract: A high-speed connector includes an insulating housing, a first terminal assembly received in the insulating housing, a second terminal assembly received in the insulating housing, a third terminal assembly received in the insulating housing, and a fourth terminal assembly received in the insulating housing. The second terminal assembly is opposite to the first terminal assembly along an up-down direction. The third terminal assembly is disposed between the first terminal assembly and the second terminal assembly. The fourth terminal assembly is corresponding to the third terminal assembly. The fourth terminal assembly is disposed between the second terminal assembly and the third terminal assembly.

Abstract: A reconfigurable intelligent surface includes a radiant layer, a sensing feeding circuit layer, a processing layer and a controlling circuit layer. The radiant layer includes at least two antennas and a plurality of reflecting units. Each of the at least two antennas is configured for sensing a polarization, a frequency or a direction angle of an incident electromagnetic wave. The reflecting units are arranged to form a reflecting surface. The sensing feeding circuit layer is signally connected to the antennas. The processing layer is signally connected to the sensing feeding circuit layer, and the processing layer is configured to produce a controlling signal corresponding thereto. The controlling circuit layer is signally connected to the radiant layer and the processing layer, wherein the controlling circuit layer receives the controlling signal and controls the reflecting units according to the controlling signal to adjust and form a reflecting electromagnetic wave.

Abstract: A paper-plastic molded cup cover capable of completely fastening to a cup body, which is an integrally molded cup cover formed by utilizing a paper-plastic molding technique. The inner side of the cup cover is provided with a C-shaped ring accommodating recess, and protruding arc walls respectively project from two ends of the C-shaped ring accommodating recess. By means of the C-shaped ring accommodating recess and the protruding arc walls at the two ends of the C-shaped ring accommodating recess, the upper edge of the cup body may be completely fastened and sealed, and therefore, the effect of complete fastening and sealing is achieved.

Abstract: A method for producing photocatalytic mortar includes providing a mortar-producing material including a fine aggregate and cement, a reactant mixture including a zinc source and urea, and a microorganism-containing mixture including water and a urease-producing microorganism, subjecting the microorganism-containing mixture and the reactant mixture to microbial induced precipitation in the mortar-producing material, subjecting zinc carbonate crystal-containing mortar produced to curing for the same to undergo hydration, and subjecting cured mortar to hydrothermal synthesis, so that zinc carbonate crystals therein are converted to nano zinc oxide crystals.

Abstract: A ratchet wrench for rotating a workpiece with a top side includes a wrench body and a ratchet. The wrench body has a working end. The working end has a first end face and a second end face opposite to each other. The working end is disposed with a through hole. The ratchet is disposed in the through hole and formed with a first tool trough and a second tool trough communicating with each other. The first tool trough is arranged corresponding to the first end face and has a first blocking face. The second tool trough is arranged corresponding to the second end face and has a second blocking face. The workpiece is optionally received in the first tool trough or the second tool trough to make the top side abut against the first blocking face or the second blocking face.

Abstract: A pulsed-plasma thruster using an unbalanced theta-pinch includes a gas-puff generator, an ionization convergent-divergent nozzle, and an accelerating coil set. The gas-puff generator supplies a gas puff in a pulsed manner; and the accelerating coil set is arranged on a side of a throat of the ionization convergent-divergent nozzle. After the gas puff enters the ionization convergent-divergent nozzle, an electric arc is generated between the pair of electrodes of the ionization convergent-divergent nozzle so that the gas puff is ionized and forms a plasma plume, and the electrodes are utilized to drive the accelerating coil set to generate axially non-uniform magnetic fields, to accelerate the plasma plume. Based on this, the control of thrust force generation is simple and reliable, with high energy utilization efficiency.

Abstract: A method and system device to generate and deliver an electric field to a target a peripheral nerve with customized electric fields according to the nerve of interest, which may be superficial or deep in the human body, to elicits action potentials of the target nerve. The system utilizes a stimulator circuit which receives parameters of a stimulation protocol from an external control device, and assembles basic building waveforms, counters, and timers which when combined are directed to a current/voltage driver hardware (CDC) that generates the stimulation protocol.

Abstract: A self-contained, voice-controlled system for a vehicle is provided, comprising: a control panel having a first microphone for receiving voice commands from a user; a remote interface in communication with the control panel, the remote interface having a second microphone for receiving voice commands from the user; and a power module in communication with the control panel and configured to provide an activation signal to a controlled component of the vehicle in response to receipt of a valid voice command from the user. A processor of the control panel determines whether a received voice command is a valid voice command by accessing instructions stored on a memory of the control panel.

Abstract: A single-layered hollow transmission shaft comprises a hollow shaft body. The hollow shaft body has a power-inputting end and a power-outputting end, which are formed at two opposite ends of the hollow shaft body, and at least one multi-start helix set. The multi-start helix set has a left-coiling multi-start helix section and a right-coiling multi-start helix section, which are arranged axially and have an equal pitch, number of circles, number of starts of helix and width of helix. By a single-layered structure and a structural design of the multi-start helix set, the single-layered hollow transmission shaft provides sufficient space for wiring of communication and can transmit power with pure torque while the shaft rotates, therefore increasing precision of torque detection, and can detect torque while rotating at high speed without installing any other external element and without affecting size of the space inside the shaft.