Abstract: An under voltage protection circuit includes a secondary-side output module and a primary-side input module. The secondary-side output module includes: an under voltage determination unit, configured to compare a voltage of the secondary-side output module with a preset voltage, where a first control signal is outputted when the voltage is greater than or equal to the preset voltage; and a second control signal is outputted when the voltage is less than a preset voltage; and a pulse signal generation unit, configured to transmit a periodic first pulse signal according to the first control signal and a second pulse signal according to the second control signal, where a pulse width of the second pulse signal is greater than that of the first pulse signal. The primary-side input module is configured to determine a state of the secondary-side output module according to the first pulse signal and the second pulse signal.

Abstract: The present disclosure provides a method for knocking out an N-myristoyltransferase (NMT) gene from Eimeria tenella, and belongs to the technical field of microorganisms. The method includes: mixing sporozoites of Eimeria tenella with a pCRISPR::EtNMT plasmid and a pEtNMT::DHFR plasmid, and subjecting a resulting mixture to electrotransformation to obtain NMT gene-knockout Eimeria tenella. The method provided by the present disclosure can successfully knock out the NMT gene from Eimeria tenella, which lays a foundation for studying the function of the Eimeria tenella gene and developing a vaccine therefor.

Abstract: An under voltage protection circuit includes a secondary-side output module and a primary-side input module. The secondary-side output module includes: an under voltage determination unit, configured to compare a voltage of the secondary-side output module with a preset voltage, where a first control signal is outputted when the voltage is greater than or equal to the preset voltage; and a second control signal is outputted when the voltage is less than a preset voltage; and a pulse signal generation unit, configured to transmit a periodic first pulse signal according to the first control signal and a second pulse signal according to the second control signal, where a pulse width of the second pulse signal is greater than that of the first pulse signal. The primary-side input module is configured to determine a state of the secondary-side output module according to the first pulse signal and the second pulse signal.

Abstract: The present disclosure provides a method for knocking out an N-myristoyltransferase (NMT) gene from Eimeria tenella, and belongs to the technical field of microorganisms. The method includes: mixing sporozoites of Eimeria tenella with a pCRISPR::EtNMT plasmid and a pEtNMT::DHFR plasmid, and subjecting a resulting mixture to electrotransformation to obtain NMT gene-knockout Eimeria tenella. The method provided by the present disclosure can successfully knock out the NMT gene from Eimeria tenella, which lays a foundation for studying the function of the Eimeria tenella gene and developing a vaccine therefor.

Abstract: A circuit comprises: a sampling and holding circuit and a control circuit. The sampling and holding circuit is used for sampling the voltage of a voltage sampling point in a sampling stage and holding the sampling voltage of the sampling output end after the sampling stage is ended. The control circuit is used for controlling the sampling and holding circuit to enter the sampling stage when judging that the voltage of the voltage sampling point is in a sampling voltage segment according to the voltage of the voltage sampling point, and controlling the sampling stage of the sampling and holding circuit to be ended when judging that the voltage of the voltage sampling point is in a voltage inflection point according to the voltage of the voltage sampling point and the sampling voltage of the sampling output end.

Abstract: The invention discloses a switching power supply, a primary control chip and a loop compensation device thereof.

Abstract: The present disclosure provides a control apparatus of a switch-mode power supply and a switch-mode power supply. In the control apparatus of the present disclosure, a short-circuit protection module is set, and when a switching transistor of the switch-mode power supply is turned on, and the short-circuit protection module detects that a voltage across a current sensing resistor of the switch-mode power supply is less than a predetermined value within a predetermined period, that is, the current sensing resistor is short-circuited, the short-circuit protection module generates a short-circuit protection signal, and a driving controller controls the switching transistor to turn off according to the protection signal, thereby switching off the control apparatus, preventing breakdown of the switch-mode power supply, and avoiding erroneous protection.

Abstract: The present disclosure provides a control apparatus of a switch-mode power supply and a switch-mode power supply. In the control apparatus of the present disclosure, a short-circuit protection module is set, and when a switching transistor of the switch-mode power supply is turned on, and the short-circuit protection module detects that a voltage across a current sensing resistor of the switch-mode power supply is less than a predetermined value within a predetermined period, that is, the current sensing resistor is short-circuited, the short-circuit protection module generates a short-circuit protection signal, and a driving controller controls the switching transistor to turn off according to the protection signal, thereby switching off the control apparatus, preventing breakdown of the switch-mode power supply, and avoiding erroneous protection.

Abstract: Resource processing methods and devices are disclosed. The method comprises: receiving authentication information and business resource quantity information sent by a terminal, wherein the authentication information has an association relationship with a first account and the terminal is bundled with a second account; determining, according to the association relationship between the authentication information and the first account, the first account corresponding to the authentication information; acquiring, according to the business resource quantity information and from business resources of the first account, business resources corresponding to the business resource quantity information and forwarding the acquired business resources to the second account.

Abstract: The invention discloses a switching power supply, a primary control chip and a loop compensation device thereof.

Abstract: A control integrated circuit for controlling a switch power supply, including: a voltage collecting module, configured to collect a feedback voltage based on an output voltage of the switch power supply; an error amplifying module, configured to compare the feedback voltage with a reference voltage and generate an error voltage; a time collecting module, configured to obtain a degaussing time signal based on the feedback voltage; and a constant voltage and current module, configured to collect a peak current feedback signal of a switch transistor, generate a control signal based on the error voltage, the degaussing time signal and the peak current feedback signal, wherein the control signal is for controlling an operating frequency and a duty ratio of the switch transistor, and control the switch transistor according to the control signal.

Abstract: A method for determining a single frequency network area, applied to a broadcasting and multicasting technology field, includes: determining a cell or a cell cluster with a terminal subscribing to the broadcast multicast service; determining a cell or a cell cluster without a terminal subscribing to the broadcast and multicast service that is neighboring to the cell or the cell cluster with a terminal subscribing to the broadcast multicast service, as an auxiliary cell or an auxiliary cell cluster; selecting the auxiliary cell or the auxiliary cell cluster that satisfies the predetermined conditions, and determining both the selected auxiliary cell or the auxiliary cell cluster and the cell or the cell cluster with a terminal subscribing to the broadcast and multicast service as a single frequency network area. Also, a device for determining the single frequency network area is provided.

Abstract: A control integrated circuit for controlling a switch power supply, including: a voltage collecting module, configured to collect a feedback voltage based on an output voltage of the switch power supply; an error amplifying module, configured to compare the feedback voltage with a reference voltage and generate an error voltage; a time collecting module, configured to obtain a degaussing time signal based on the feedback voltage; and a constant voltage and current module, configured to collect a peak current feedback signal of a switch transistor, generate a control signal based on the error voltage, the degaussing time signal and the peak current feedback signal, wherein the control signal is for controlling an operating frequency and a duty ratio of the switch transistor, and control the switch transistor according to the control signal.

Abstract: A method for determining a single frequency network area, applied to a broadcasting and multicasting technology field, includes: determining a cell or a cell cluster with a terminal subscribing to the broadcast multicast service; determining a cell or a cell cluster without a terminal subscribing to the broadcast and multicast service that is neighboring to the cell or the cell cluster with a terminal subscribing to the broadcast multicast service, as an auxiliary cell or an auxiliary cell cluster; selecting the auxiliary cell or the auxiliary cell cluster that satisfies the predetermined conditions, and determining both the selected auxiliary cell or the auxiliary cell cluster and the cell or the cell cluster with a terminal subscribing to the broadcast and multicast service as a single frequency network area. Also, a device for determining the single frequency network area is provided.