Abstract: Disclosed are a composite zeolite SCR catalyst, a preparation method therefor and use thereof. The composite zeolite SCR catalyst comprises a Cu-based zeolite and a first hydrogen-type zeolite; the composite zeolite SCR catalyst has a NOx removal efficiency of more than or equal to 80% at more than or equal to 300° C.; the composite zeolite SCR catalyst is subjected to hydrothermal treatment at 750-950° C. for 10-16 h, and the hydrothermally treated composite zeolite SCR catalyst has a NOx removal efficiency of more than or equal to 60% at more than or equal to 300° C. The composite zeolite SCR catalyst of the present application is used in the technology of selective catalytic reduction on nitrogen oxides with ammonia, and the composite zeolite SCR catalyst has simple composition, low preparation cost, great catalytic performance and good hydrothermal stability.

Abstract: The present application relates to a cerium-tin-based composite oxide catalyst for catalyzing purification of a nitrogen oxide, a preparation method and an application thereof. The catalyst has the following chemical composition: a cerium-tin oxide and an M oxide, wherein the M is selected from any one of or a combination of at least two of P, Ti, Zr, V, Mn, Fe, Cu, Al, Si, Ni, Hf, Nb, Ta, Cr, Mo, W, or Re.

Abstract: An encryption key, a security authentication system and a security authentication method. The encryption key comprises a security module, a first control unit, a first oscillation transmission unit and a first oscillation receiving unit. The first oscillation receiving unit receives as input an oscillation signal transmitted through medium. The first oscillation transmission unit transmits output encryption information to the medium. The input of the first control unit is connected to the output of the first oscillation receiving unit; the control port of the first control unit is connected to the security module; and the output of the first control unit is connected to the input of the first oscillation transmission unit. Encryption information is transmitted wirelessly by the oscillation of the medium the encryption key resides in. Encryption information is transmitted between the encryption key and the mobile terminal by the oscillation of the medium without public network's intervention.

Abstract: A radio frequency communication system, method, and device operate in the VHF, UHF, or SHF range, where a controller controls the radio-frequency communication range provided by the VHF, UHF, or SHF radiation.

Abstract: A radio frequency (RF) device includes an RF transceiver, an RF antenna, and a magnetic signal detector. The RF is selected to be in the very high frequency (VHF), ultrahigh frequency (UHF), or super high frequency (SHF) bands such that the shielding effect is reduced and the RF device can be configured as a SIM card disposed inside a cellular phone with an increased RF communication range. The magnetic signal detector is used to sense a magnetic field signal from an RF reader, which includes an RF transceiver, an RF antenna, and a magnetic signal transmitter. The longer communication range afforded by the VHF, UHF, or SHF bands is reduced by the sensing of the magnetic field, thereby providing a communication range control, while the RF device and the RF reader exchange information through the RF channel with improved security as a result of the range control.

Abstract: Systems, devices, and methods allow real time information transmission between a real-time information service system and user terminals in an application space. The system includes an information server; a communication unit; and a positioning unit. The positioning unit and the communication unit are configured to communicate with a user terminal outside the information service system in an application space. The communication unit is configured to further communicate with the information server. The positioning unit is configured to determine a location of the user terminal. The information server is configured to store service information containing location parameters. The information server is configured to provide, via the communication unit, service information to the user terminal that matches the location of the user terminal.

Abstract: An integrated circuit (IC) card is disclosed. The IC card includes a microprocessor and memory module configured to perform a transaction associated with the IC card, and an interface device providing a power input line from an external source. The IC card also includes a power management module coupled between the microprocessor and memory module and the interface device to convert power from the power input line into electric charge, to store the electric charge internally, and to provide power to the microprocessor and memory module when the external source does not provide sufficient power to the IC card.

Abstract: A radio frequency (RF) IC card device with very high frequency comprises an IC device (102), a radio frequency interface device (103), an RF antenna (104), an IC card interface (106) and an RF interface (107). Particularly, said RF interface device (103) and the RF interface (107) operate in a frequency band of UHF (ultra high frequency) or SHF (super high frequency); said RF antenna (104) is directly integrated on an IC card (100); the RF IC card device with very high frequency exchanges data with other RF devices via the RF interface (107).

Abstract: A radio frequency (RF) IC card device with very high frequency comprises an IC device (102), a radio frequency interface device (103), an RF antenna (104), an IC card interface (106) and an RF interface (107). Particularly, said RF interface device (103) and the RF interface (107) operate in a frequency band of UHF (ultra high frequency) or SHF (super high frequency); said RF antenna (104) is directly integrated on an IC card (100); the RF IC card device with very high frequency exchanges data with other RF devices via the RF interface (107).

Abstract: A radio frequency (RF) device includes an RF transceiver, an RF antenna, and a magnetic signal detector. The RF is selected to be in the very high frequency (VHF), ultrahigh frequency (UHF), or super high frequency (SHF) bands such that the shielding effect is reduced and the RF device can be configured as a SIM card disposed inside a cellular phone with an increased RF communication range. The magnetic signal detector is used to sense a magnetic field signal from an RF reader, which includes an RF transceiver, an RF antenna, and a magnetic signal transmitter. The longer communication range afforded by the VHF, UHF, or SHF bands is reduced by the sensing of the magnetic field, thereby providing a communication range control, while the RF device and the RF reader exchange information through the RF channel with improved security as a result of the range control.

Abstract: A radio frequency communication system, method, and device operate in the VHF, UHF, or SHF range, where a controller controls the radio-frequency communication range provided by the VHF, UHF, or SHF radiation.

Abstract: A radio frequency (RF) IC card device with very high frequency comprises an IC device (102), a radio frequency interface device (103), an RF antenna (104), an IC card interface (106) and an RF interface (107). Particularly, said RF interface device (103) and the RF interface (107) operate in a frequency band of UHF (ultra high frequency) or SHF (super high frequency); said RF antenna (104) is directly integrated on an IC card (100); the RF IC card device with very high frequency exchanges data with other RF devices via the RF interface (107).

Abstract: A radio frequency (RF) IC card device with very high frequency comprises an IC device (102), a radio frequency interface device (103), an RF antenna (104), an IC card interface (106) and an RF interface (107). Particularly, said RF interface device (103) and the RF interface (107) operate in a frequency band of UHF (ultra high frequency) or SHF (super high frequency); said RF antenna (104) is directly integrated on an IC card (100); the RF IC card device with very high frequency exchanges data with other RF devices via the RF interface (107).