Abstract: A radiographic inspection device and a method of inspecting an object are provided. The radiographic inspection device includes: a support frame, where an inspection space applicable to inspect an object is formed within the support frame, and the inspection space has an entrance and an exit which are connecting to an outside; a transfer channel applicable to carry the object to move through the inspection space; a first shielding curtain and a second shielding curtain respectively mounted at the entrance and the exit; and a driving mechanism mounted on the support frame and configured to drive at least one of the first shielding curtain and the second shielding curtain to move, in response to the object getting close to or moving away from at least one of the entrance and the exit, so as to open or close the at least one of the entrance or the exit.

Abstract: A radiographic inspection device and a method of inspecting an object are provided. The radiographic inspection device includes a support frame, where an inspection space applicable to inspect an object is formed within the support frame, and the inspection space has a first opening connecting to an outside; a transfer mechanism applicable to carry the object to move through the inspection space; a shielding curtain mounted at the first opening; and a driving mechanism mounted on the support frame and configured to drive the shielding curtain to move, so as to open or close the first opening. Since the driving mechanism drives the shielding curtain to rise or fall, it is possible to ensure that the lightweight object for inspection may smoothly enter the inspection space for subsequent radiographic scanning.

Abstract: The present invention discloses a centroid adjustment device suitable for different types of loads, which belongs to the field of transportation and support technology, including an upper adjustment assembly, a connecting module, and a loading device. The connecting module includes connecting pieces and chain connection assemblies adjustable in length, both upper ends of the connecting pieces and the chain connection assemblies are respectively mounted on opposite sides of the centroid of the upper adjustment assembly and can be adjusted to move toward or away from each other at an upper end of the upper adjustment assembly, and both lower ends of the connecting pieces and the chain connection assemblies are respectively mounted on opposite sides of the centroid of the loading device.

Abstract: A radiographic inspection apparatus and a vehicle-mounted security inspection system. The radiographic inspection apparatus includes a scanning device, where the scanning device includes: an upright framework; a slip ring rotatably provided on the upright framework; and a locking mechanism. The locking mechanism includes: a driving mechanism provided on the upright framework; and a contact portion provided on the driving mechanism to come into contact with an outer ring of the slip ring under a driving of the driving mechanism, so as to prevent the slip ring from rotating relative to the upright framework.

Abstract: A method of fabrication of a multi-gate semiconductor device that includes providing a fin having a plurality of a first type of epitaxial layers and a plurality of a second type of epitaxial layers. The plurality of the second type of epitaxial layers is oxidized in the source/drain region. A first portion of a first layer of the second type of epitaxial layers is removed in a channel region of the fin to form an opening between a first layer of the first type of epitaxial layer and a second layer of the first type of epitaxial layer. A portion of a gate structure is then formed in the opening.

Abstract: A radiographic inspection device and a method of inspecting an object are provided. The radiographic inspection device includes a support frame, where an inspection space applicable to inspect an object is formed within the support frame, and the inspection space has a first opening connecting to an outside; a transfer mechanism applicable to carry the object and move through the inspection space; a shielding curtain mounted at the first opening; and a driving mechanism. The driving mechanism includes: a driver mounted on the support frame; and a joint portion, where an upper end of the shielding curtain is connected to the joint portion. The driver is configured to synchronously drive two ends of the joint portion, so that the shielding curtain moves up and down with the joint portion to open or close the first opening.

Abstract: An electronic apparatus and a photovoltaic power optimizer. The electronic apparatus includes a circuit board, a heat dissipation housing, and an insulation member. The circuit board has a first surface and a second surface opposite to each other, where a first heat dissipation region is formed on the first surface and a second heat dissipation region is formed on the second surface. A first heat dissipation member has a first heat dissipation surface that is in direct contact with the first heat dissipation region. A second heat dissipation member is connected to the first heat dissipation member in a first direction, and has a second heat dissipation surface that is in direct contact with the second heat dissipation region. The first heat dissipation region and the second heat dissipation region are sealed by using the first heat dissipation member and the second heat dissipation member.

Abstract: Surface structures that enable the preparation of three-dimensional microarrays of proteins or small molecules or other types of macromolecules are disclosed. The three-dimensional microarrays possess higher sensitivity for detecting protein-macromolecule and small molecule-protein interactions in a high-throughput fashion.

Abstract: The present invention relates to the method and the system for initializing secure network access for POS terminals. Said system comprises a terminal backend system and a POS terminal. The POS terminal is provided with: a security module, which was preloaded with a terminal default public key certificate, a private key file, and a CA public key certificate of the terminal backend system in the setting of leaving the factory; a transaction module, which is used for performing the acquiring operation with the following core trading module; and a parameter initializing module, which is used for implementing network access.

Abstract: Disclosed is an operation amplification circuit and an over-current protection method therefor. The operation amplification circuit comprises: a control unit, configured to generate an output control signal according to an input signal and an output signal; an output unit, configured to generate an output current under control of the output control signal, wherein the output unit comprises an output capacitor which is charged or discharged by the output current to generate the output signal; an over-current protection unit, obtaining a temperature control current according to an operating temperature of the operation amplification circuit, wherein when the operating temperature is greater than or equal to a predetermined temperature, the temperature control current is positively correlated with the operating temperature, and the over-current protection unit adjusts the output control signal according to the temperature control current to limit the output current.

Abstract: Disclosed an LED driving controller and a driving circuit. The LED driving controller comprises: a power transistor having a control terminal for receiving a switching control signal, a first terminal and a second terminal; zero-crossing detection circuit for generating a zero-crossing detection signal; a first comparison circuit, configured to compare a reference voltage with a sampling voltage to generate a first control signal; a control circuit being coupled to the zero-crossing detection circuit and the comparison circuit and configured to generate a switching control signal in accordance with the zero-crossing detection signal and the first control signal; an overvoltage protection circuit configured to generate an overvoltage protection signal in accordance with an off-time provided by the control circuit and a reference voltage; a shielding circuit configured to shield the overvoltage protection signal is provided.

Abstract: Disclosed an LED driving controller and a driving circuit. The LED driving controller comprises: a power transistor having a control terminal for receiving a switching control signal, a first terminal and a second terminal; zero-crossing detection circuit for generating a zero-crossing detection signal; a first comparison circuit, configured to compare a reference voltage with a sampling voltage to generate a first control signal; a control circuit being coupled to the zero-crossing detection circuit and the comparison circuit and configured to generate a switching control signal in accordance with the zero-crossing detection signal and the first control signal; an overvoltage protection circuit configured to generate an overvoltage protection signal in accordance with an off-time provided by the control circuit and a reference voltage; a shielding circuit configured to shield the overvoltage protection signal is provided.

Abstract: Disclosed is an operation amplification circuit and an over-current protection method therefor. The operation amplification circuit comprises: a control unit, configured to generate an output control signal according to an input signal and an output signal; an output unit, configured to generate an output current under control of the output control signal, wherein the output unit comprises an output capacitor which is charged or discharged by the output current to generate the output signal; an over-current protection unit, obtaining a temperature control current according to an operating temperature of the operation amplification circuit, wherein when the operating temperature is greater than or equal to a predetermined temperature, the temperature control current is positively correlated with the operating temperature, and the over-current protection unit adjusts the output control signal according to the temperature control current to limit the output current.

Abstract: The present invention relates to the method and the system for initializing secure network access for POS terminals. Said system comprises a terminal backend system and a POS terminal. The POS terminal is provided with: a security module, which was preloaded with a terminal default public key certificate, a private key file, and a CA public key certificate of the terminal backend system in the setting of leaving the factory; a transaction module, which is used for performing the acquiring operation with the following core trading module; and a parameter initializing module, which is used for implementing network access.

Abstract: The present application discloses a secure transfer method for cloud-based POS transaction sensitive data, comprising steps of: (a) exchanging a transaction process key with the cloud POS terminal; (b) receiving, from the cloud POS terminal, the transaction request packet encrypted by using the transaction process key; and (c) obtaining the transaction sensitive data from the transaction request packet, and using the transaction process key to operate on the transaction sensitive data so as to upload to the financial acquiring platform. The present invention also discloses a secure transfer system for cloud-based POS transaction sensitive data.