摘要:
This invention provides a class of dual mode imaging tracer capable of acting both as a fluorescent imaging tracer and a positron emission tomography imaging tracer. Tracers in accordance with this invention generally have a fluorescent core with a boron-fluoride element embedded therein. Exemplary embodiments of the tracer include 18F-labeled BODIPY compounds and derivative thereof. Also provided are tracer kits containing a sterile formulation of a BODIPY dye either in a radio-labeled or pre-labeled state, and methods for imaging heart perfusion using the 18F-labeled dual mode tracers.
摘要:
A circuit may include a detector, a modulator, a switch, and a stabilizer. The detector may detect current supplied to an output of the circuit to generate an overcurrent signal. The modulator may modulate a pulse signal based upon the output of the circuit. The switch may control a power stage to generate the output of the circuit based upon the overcurrent signal and the pulse signal. The stabilizer may send an offset signal to the modulator. The stabilizer may generate the offset signal with a magnitude adjusted based upon the overcurrent signal, and the modulator may adjust the pulse signal based upon the offset signal.
摘要:
The present invention discloses a metal nickel-imidazolate chiral nano clathrate complex and preparation method thereof. The new type of metal nickel-imidazolate chiral nano clathrate complex of the present invention has the following chemical formula: [Ni14(Im)24].4NO3, in which Im is N-1-methyl-(4-imidazole) methylene imine. The complex can be obtained directly from a reaction of starting materials or prepared through first initiating a reaction between the compound ligand Im and a nickel salt under solvothermal conditions, and the complex obtained is of higher purity. The nano clathrate complex of the present invention has single chirality, and higher thermal stability, and thus has potential application in chiral catalytic materials.
摘要:
Techniques to generate boosted multi-level switched output voltages from a boosted multi-level Class D amplifier. The amplifier may include a multi-level H-bridge, which may include pairs of transistor switches coupled to a first, second, and third supply potential. The second supply potential may be a boosted representation of the first supply potential. The amplifier may receive an input signal, and from the input signal may generate pulse-modulated control signals to control the switching for the transistor switches of the multi-level H-bridge. The amplifier may generate the boosted multi-level switched output voltages from output nodes of the multi-level H-bridge.
摘要:
The present invention provides electronic equipment, pressure detecting method and pressure detecting device. The electronic equipment comprises: a horizontal pressure detecting device arranged at the periphery of the touch screen to detect the pressure applied to the touch screen in the horizontal direction and generate a horizontal pressure signal; and a pressure processing unit to determine the direction of the pressure applied to the touch screen in the horizontal direction according to the horizontal pressure signal generated by the horizontal pressure detecting device. The direction of the pressure applied to the touch screen may be determined by the embodiments of the present invention, and the precision of detection is high, the manufacture is simple, and the cost is low.
摘要:
A method, a system, and a device for processing failure is provided; the method is applicable to a label switched path (LSP) including a first node, a second node, and at least one third node. The first node and the second node are adjacent nodes suffering communication breakdown. The first node restarts. The third node is a normal node closest to the restarted first node. When the communication between the first node and the second node is broken, the third node maintains control state information of the LSP in certain time. When the communication between the first node and the second node is recovered in the certain time, the first node, the second node, and the third node recover the control state information of the LSP. A failure processing system and a device on LSP are further provided. Therefore, when several nodes on the LSP suffer communication failures, the LSP can be reliably recovered.
摘要:
A power stage to generate an output voltage at one of a high reference voltage, an intermediate reference voltage and a low reference voltage, including a first switch stage connecting the output terminal to the high reference voltage, comprising a pair of transistors connected in series along their source-to-drain paths, a first transistor coupled to the output terminal and having its gate biased at the intermediate voltage, a second transistor having a gate that receives a first stage control signal that varies between the high reference voltage and the intermediate reference voltage, a second switch stage connecting the output terminal to the intermediate reference voltage, having a gate that receives a second stage control signal that varies among the high reference voltage, intermediate reference voltage and low reference voltage, a third switch stage connecting the output terminal to the low reference voltage, having a pair of transistors connected in series along their source-to-drain paths, a first transistor coupled to the output terminal and having its gate biased at the intermediate voltage, a second transistor having a gate that receives a third stage control signal that varies between the intermediate reference voltage and the low reference voltage.
摘要:
Method and module for switching operating mode for near-field communication, and terminal equipment using same. The method includes: acquiring by one device of both devices in near-field communication relevant parameters of the other device including type of the device; determining by the one device whether to switch to a target operating mode according to the relevant parameters of the one device and the other device, or determining whether to exchange operating modes with the other device; wherein the relevant parameters of the one device include type of the device; and switching the operating mode by the one device to the target mode or exchanging the operating mode of the one device with that of the other device, if the determining result of the determining step is positive. According to the embodiments, power consumption may be distributed more reasonably and the power consumption of the initiator device may be reduced.
摘要:
Methods and apparatus to provide a handheld pointer-based user interface are described herein. An example apparatus includes a wireless pointer component and one or more base components. The wireless pointer component is configured to transmit one or more human-computer interaction (HCI) signals associated with an HCI event via a first communication link. One or more base components are operatively coupled to a screen of a display to receive the one or more HCI signals from the wireless pointer component via the first communication link. Further, the one or more base components are configured to generate at least one of operating information and position information of the wireless pointer component based on the one or more HCI signals, and to transmit the at least one of operating information and position information to a processor configured to generate screen information on the screen of the display via a second communication link.
摘要:
The present invention relates to a video purchasing method, a video playing method, a server and a video playing device. The video purchasing method comprises: receiving a request of a user for purchasing a video file, the request including starting time and ending time of part of the video contents in a complete video file selected by the user; determining starting frame and ending frame to which the starting time and the ending time correspond; and generating the video file to which the part of the video contents corresponds according to the starting frame and the ending frame. According to the method, the user may purchase video contents as needed, and need not purchase the whole video file, which not only brings convenience to users, but also saves costs.