Abstract: The invention discloses an efficient solar flat plate heat absorption system, composed of a primary circulating pipe network, a secondary circulating pipe network and a control system, wherein the primary circulating pipe network is formed by communicating a pipeline in a pressure bearing water tank with a heat exchange tube I in a flat plate heat collector group through a pipeline I and a pipeline III, the secondary circulating pipe network is formed by communicating a pipe network at the bottom of a swimming pool with a heat exchange tube II in the flat plate heat collector group through a pipeline II and a pipeline IV, wherein thermometers are arranged at a water outlet of the heat exchange tube I, at the water outlet of the heat exchange tube II, in the swimming pool and in the pressure bearing water tank, and circulating pumps are arranged on the pipeline I and the pipeline II.

Abstract: Disclosed is a lighting device (200) comprising a mounting surface (201); a lens (100) comprising a lens body (101) having an inner surface (102) encapsulating a cavity (103) and delimiting an entrance to said cavity, said entrance facing the mounting surface, the inner surface comprising a plurality of adjoining surface sections each defining a segment of the cavity, wherein each segment has a narrowing region distal to the entrance delimited by a curved portion (106) of the surface section delimiting said segment; and an elongate carrier (202) extending from the mounting surface into the cavity segments through the cavity entrance and comprising a plurality of solid state lighting elements (203) configured to emit light towards the lens body. Further disclosed is a luminaire comprising the said lighting device.

Abstract: The present disclosure discloses a method, apparatus and system for assisting security inspection, and relates to the field of security inspection. The method includes: acquiring registration information of an inspected object; acquiring a standard scanned image corresponding to the registration information; displaying the standard scanned image in an AR manner to determine whether the inspected object is a suspicious object through comparing the standard scanned image with an actual scanned image, the actual scanned image comprising an image of the inspected object.

Abstract: Disclosed is a lighting device (200) comprising a mounting surface (201); a lens (100) comprising a lens body (101) in having an inner surface (102) encapsulating a cavity (103) and delimiting an entrance to said cavity, said entrance facing the mounting surface, the inner surface comprising a plurality of adjoining surface sections each defining a segment of the cavity, wherein each segment has a narrowing region distal to the entrance delimited by a curved portion (106) of the surface section delimiting said segment; and an elongate carrier (202) extending from the mounting surface into the cavity segments through the cavity entrance and comprising a plurality of solid state lighting elements (203) configured to emit light towards the lens body. Further disclosed is a luminaire comprising the said lighting device.

Abstract: The invention discloses an efficient solar flat plate heat absorption system, composed of a primary circulating pipe network, a secondary circulating pipe network and a control system, wherein the primary circulating pipe network is formed by communicating a pipeline in a pressure bearing water tank with a heat exchange tube I in a flat plate heat collector group through a pipeline I and a pipeline III, the secondary circulating pipe network is formed by communicating a pipe network at the bottom of a swimming pool with a heat exchange tube II in the flat plate heat collector group through a pipeline II and a pipeline IV, wherein thermometers are arranged at a water outlet of the heat exchange tube I, at the water outlet of the heat exchange tube II, in the swimming pool and in the pressure bearing water tank, and circulating pumps are arranged on the pipeline I and the pipeline II.

Abstract: Provided are a monitoring system and a monitoring method. The monitoring system includes a monitoring center, N data transmission systems each in communication with the monitoring center, and N data control systems each in communication with the monitoring center, with the N data control systems corresponding one-to-one to the N data transmission systems. With the monitoring system, it is possible to monitor, at anytime and anywhere, the project service and operation conditions of N solar systems arranged at different locations, timely acquire the real-time operation information of the N solar system monitoring devices arranged at different locations, and conduct, according to such information, remote and centralized control over the solar system monitoring devices. The monitoring system enhances the controllability of the solar system monitoring devices, saves and reduces the maintenance costs, improves the scientific management level, and also has functions of energy saving and environment protection.

Abstract: The invention relates to co-cultures and their use in the biosynthesis of functionalized taxanes, other isoprenoids, aromatics, and aromatic-derived compounds.

Abstract: Embodiments of the present invention provide an HTTP-based content acquisition method and client. The method includes: acquiring, by a client according to an acquired content identifier, a first content corresponding to the content identifier and a validity period of the first content from a cache; displaying, by the client, the first content; requesting, by the client according to the validity period of the first content, a server to verify validity of the first content; requesting, by the client, to acquire a second content corresponding to the content identifier from the server if the validity verification performed by the server for the first content fails; and displaying, by the client, the second content. In this way, the delay in displaying the content on the client can be reduced, thereby improving the display efficiency of the client.

Abstract: Genetically modified E. coli strains capable of producing erythromycins, particularly erythromycin A.

Abstract: Amplifier circuitry includes an input stage having a transconductance stage including first and second input transistors and a first tail current source, gates of the first and second input transistors being coupled to first and second input signals, respectively. A bulk electrode capacitance driver includes third and fourth input transistors and first and second associated cascode transistors and a second tail current source coupled to the sources and bulk electrodes of the third and fourth input transistors and to the bulk electrodes of the first and second input transistors. The gates of the third and fourth input transistors are coupled to the first and second input voltage signals, respectively, and the gates of the first and second cascode transistors are coupled to the second and first input voltage signals, respectively.

Abstract: Amplifier circuitry includes an input stage having a transconductance stage including first and second input transistors and a first tail current source, gates of the first and second input transistors being coupled to first and second input signals, respectively. A bulk electrode capacitance driver includes third and fourth input transistors and first and second associated cascode transistors and a second tail current source coupled to the sources and bulk electrodes of the third and fourth input transistors and to the bulk electrodes of the first and second input transistors. The gates of the third and fourth input transistors are coupled to the first and second input voltage signals, respectively, and the gates of the first and second cascode transistors are coupled to the second and first input voltage signals, respectively.

Abstract: A charge pump circuit is configured for charging of parasitic capacitances associated with charge pump capacitors in a manner that minimizes voltage ripple. The charge pump circuit is suitably configured with an independent charging circuit configured for supplying the current needed to charge the parasitic capacitances, rather than utilizing the reservoir capacitor to supply the needed current. The independent charging circuit can be implemented with various configurations of charge pump circuits, such as single phase or dual phase charge pumps, and/or doubler, tripler or inverter configurations. The independent charging circuit includes a parasitic charging capacitor or other voltage source configured with one or more switch devices configured to facilitate charging of the parasitics during any phases of operation of the charge pump circuit.

Abstract: A composite loop compensation circuit and method for a low drop-out regulator configured to facilitate stable operation at very low output load currents is provided. An exemplary low drop-out regulator includes an error amplifier, a pass device, and a composite loop compensation circuit. The compensation loop compensation circuit includes a plurality of segmented sense devices, a plurality of switches and a biasing component. The plurality of segmented sense devices are configured to sense an output load current, i.e., the current from the output terminal of the pass device. The plurality of switches are coupled between the plurality of segmented sense devices and a biasing component. Composite loop compensation circuit is configured to adjust the dominant first pole of the composite feedback loop based on the output load current through biasing of the active resistor component.

Abstract: A charge pump circuit is configured for continuous control of the output of the charge pump circuit through continuous use of at least one charge pump capacitor coupled with a servo amplifier. During and between both phases of operation of the charge pump circuit, the output current from the servo amplifier can be set equal to the load current through a continuous path. This servo amplifier configuration facilitates the continuous regulation of the load current, during both phases of operation, as well as in between the phases, and as a result no load current is drawn from the output capacitor, thus requiring no recharge of the output capacitor. In addition, an exemplary charge pump circuit can be configured with level-shifting capabilities, the ability to facilitate the use of lower voltage processes, and the ability to provide a large DC open loop gain and high stability. In addition, an exemplary charge pump circuit can be configured with capabilities for buck/boost operation.

Abstract: A charge pump circuit is configured for charging of parasitic capacitances associated with charge pump capacitors in a manner that minimizes voltage ripple. The charge pump circuit is suitably configured with an independent charging circuit configured for supplying the current needed to charge the parasitic capacitances, rather than utilizing the reservoir capacitor to supply the needed current. The independent charging circuit can be implemented with various configurations of charge pump circuits, such as single phase or dual phase charge pumps, and/or doubler, tripler or inverter configurations. The independent charging circuit comprises a parasitic charging capacitor or other voltage source configured with one or more switch devices configured to facilitate charging of the parasitics during any phases of operation of the charge pump circuit.

Abstract: A composite loop compensation circuit and method for a low drop-out regulator configured to facilitate stable operation at very low output load currents is provided. An exemplary low drop-out regulator comprises an error amplifier, a pass device, and a composite loop compensation circuit. The composite loop compensation circuit comprises a plurality of segmented sense devices, a plurality of switches and a biasing component. The plurality of segmented sense devices are configured to sense an output load current, i.e., the current from the output terminal of the pass device. The plurality of switches are coupled between the plurality of segmented sense devices and the biasing component. Composite loop compensation circuit is configured to adjust the dominant first pole of the composite feedback loop based on the output load current through biasing of the active resistor component.

Abstract: A charge pump circuit is configured for continuous control of the output of the charge pump circuit through continuous use of at least one charge pump capacitor coupled with a servo amplifier. During and between both phases of operation of the charge pump circuit, the output current from the servo amplifier can be set equal to the load current through a continuous path. This servo amplifier configuration facilitates the continuous regulation of the load current, during both phases of operation, as well as in between the phases, and as a result no load current is drawn from the output capacitor, thus requiring no recharge of the output capacitor. In addition, an exemplary charge pump circuit can be configured with level-shifting capabilities, the ability to facilitate the use of lower voltage processes, and the ability to provide a large DC open loop gain and high stability. In addition, an exemplary charge pump circuit can be configured with capabilities for buck/boost operation.

Abstract: A charge pump circuit is configured for suitably controlling the charging current in the charge pump capacitors. The charge pump circuit comprises an input current controlling circuit comprising a current limiting device for controlling the inrush current, and thus the charging current in the charge pump capacitors. The input current controlling circuit is configured to regulate the average voltage at the output of the current limiting device to correspond to the average voltage at the output of a pass device configured for regulating the output current. Accordingly, the total input current, and thus the charging current in the charge pump capacitors, can be suitably controlled at all times to significantly reduce the impact of any instantaneous charging currents.

Abstract: A charge pump circuit is configured for suitably controlling the charging current in the charge pump capacitors. The charge pump circuit comprises an input current controlling circuit comprising a current limiting device for controlling the inrush current, and thus the charging current in the charge pump capacitors. The input current controlling circuit is configured to regulate the average voltage at the output of the current limiting device to correspond to the average voltage at the output of a pass device configured for regulating the output current. Accordingly, the total input current, and thus the charging current in the charge pump capacitors, can be suitably controlled at all times to significantly reduce the impact of any instantaneous charging currents.

Abstract: A charge pump circuit is provided for reducing the voltage ripple and EMI associated with prior art circuits. The charge pump circuit is configured with at least one current source for suitably controlling the charging and/or discharging current in the charge pump capacitors the currents of the current sources are determined by the load current requirements, rather than the on-resistance of any switches or the ESR of any capacitors, thus allowing a significant reduction of the peak current drawn from the power supply as well as the peak current injected into the output reservoir capacitor. The charge pump circuit can be configured with a current source in series with the input supply voltage to control the total current in the charge pump. In addition, the charge pump circuit can be configured with current limited switches for controlling the total current.