Abstract: A method of operating a converter of a wind turbine for providing electric energy to a utility grid includes determining a grid voltage. If the grid voltage is between a nominal voltage and a first voltage threshold, i.e. higher than the nominal voltage, a normal procedure for lowering the grid voltage is performed. If the grid voltage is above the first voltage threshold, another procedure for keeping the wind turbine connected is performed, wherein the other procedure is different from the normal procedure. Further a corresponding arrangement is described.

Abstract: A control device, method, and computer program for a wind park are provided, the wind park having a plurality of wind turbines for generating electric power, wherein the wind turbines are electrically interconnected by a wind park grid. The control device includes (a) a determining unit for determining whether a wind park load for consuming electric power from the wind park grid is to be enabled, (b) a calculating unit for calculating a power reference value for each of the plurality of wind turbines, the power reference value being indicative of the amount of power which the corresponding wind turbine should produce, and (c) a transmitting unit for transmitting the calculated power reference values to the corresponding wind turbines, wherein, if the determining unit has determined that the wind park load is to be enabled, at least one of the power reference values calculated by the processing unit is negative.

Abstract: An apparatus and a system for hybrid-transmitting and bridging of a circuit service and a packet service are provided. The apparatus includes a TDM framing unit, a TDM three-direction cross unit, and a mapping and encapsulating unit. The TDM framing unit implements conversion between a line layer TDM signal outside the apparatus and channel layer TDM signals inside the apparatus, and transmits the channel layer TDM signals to the TDM three-direction cross unit. The TDM three-direction cross unit implements cross scheduling on the channel layer TDM signals from a TDM cross apparatus, the mapping and encapsulating unit, and the TDM framing unit. The mapping and encapsulating unit implements conversion between a channel layer TDM signal from the TDM three-direction cross unit and packet service signals from the packet processing unit.

Abstract: Method, system, and computer readable medium for determining a fault in a power filter of a wind turbine generator. The method may include the steps of calculating a reactive power consumed by the power filter, and comparing the calculated reactive power to a predefined threshold reactive power to determine the fault.

Abstract: A method for controlling a wind turbine is provided. The method includes monitoring an electrical quantity at an output terminal of the wind turbine. The electric quantity has an amplitude and periodically varying with a grid frequency. The method further includes detecting an oscillation of the amplitude and decreasing active power output from the wind turbine at the output terminal depending on the detected oscillation.

Abstract: Methods are provided for diagnosing pregnancy-associated disorders, determining allelic ratios, determining maternal or fetal contributions to circulating transcripts, and/or identifying maternal or fetal markers using a sample from a pregnant female subject. Also provided is use of a gene for diagnosing a pregnancy-associated disorder in a pregnant female subject.

Abstract: A method for controlling a wind turbine is proposed. The wind turbine is in a wind farm and connected to a point of common coupling that is connected to a utility grid. At least one quantity indicative of a short circuit ratio of the utility grid is measured. A control parameter of a control system controlling the wind turbine and the wind farm is adjusted. based on the measured value of the quantity.

Abstract: Disclosed are an online Q&A method, device, and system. In an exemplary online Q&A method, a question request sent by a client terminal device can be received by a server. The question request can contain information about a question, an ID of a questioner user, and information about a location of the questioner user. Based on the information about the location of the questioner user and information about locations of other users, the server can determine other online users within a set distance range from the location of the questioner user. The server can then send the received information about the question to client terminal devices of the other online users within the set distance range from the location of the questioner user.

Abstract: Methods, apparatuses, and system are provided for analyzing a maternal sample to determine whether a male fetus of a pregnant female has inherited an X-linked mutation from the mother. A percentage of fetal DNA in the sample is obtained, and cutoff values for the two possibilities (fetus inherits mutant or normal allele) are determined. A proportion of mutant alleles relative to a normal allele on the X-chromosome can then be compared to the cutoff values to make a classification of which allele is inherited. Alternatively, a number of alleles from a target region on the X-chromosome can be compared to a number of alleles from a reference region on the X-chromosome to identify a deletion or amplification. The fetal DNA percentage can be computed by counting reactions with a fetal-specific allele, and correcting the number to account for a statistical distribution among the reactions.

Abstract: A method for controlling a wind turbine is provided. The method includes monitoring an electrical quantity at an output terminal of the wind turbine. The electric quantity has an amplitude and periodically varying with a grid frequency. The method further includes detecting an oscillation of the amplitude and decreasing active power output from the wind turbine at the output terminal depending on the detected oscillation.

Abstract: A method of operating a converter of a wind turbine for providing electric energy to a utility grid includes determining a grid voltage. If the grid voltage is between a nominal voltage and a first voltage threshold, i.e. higher than the nominal voltage, a normal procedure for lowering the grid voltage is performed. If the grid voltage is above the first voltage threshold, another procedure for keeping the wind turbine connected is performed, wherein the other procedure is different from the normal procedure. Further a corresponding arrangement is described.

Abstract: Verifying a user, such as, but not limited to, a user who answered questions for an unproctered test for employment. A representation of a transition pattern is stored (200). Time series voice data is received from a user responding to a sequence of questions (72) having multiple levels of difficulty. The transition pattern in the voice data (200) is based on a plurality of comparisons (503) of subsets (500) of the voice data corresponding to responses to questions having one or more different levels of difficulty. A further transition pattern (200) is determined from voice data in the same way but based on a shorter sequence of questions (78). The user is verified based on a comparison (78) of this further transition pattern to a previously stored transition pattern.

Abstract: A control system for a wind park includes a plurality of limit controllers. Each limit controller is configured to output a limit value set based upon a specific grid code requirement. A selection unit compiles a limit value set from the plurality of limit value sets according to a number of grid code requirements. The control system further includes a plurality of main controllers, wherein a main controller is configured to generate a setpoint for one or more wind turbines of the wind park according to the compiled limit value set. Further, a wind park and a method of controlling a wind park are provided.

Abstract: A water body self-generating electrolytic reduction module is applied to a water body containing oxidizing substances. The water body self-generating electrolytic reduction module includes a self-generating unit and an electrolysis unit. The self-generating unit is coupled to the electrolysis unit. When circulating in a water transmission pipeline, the water body drives the self-generating unit to generate an electric power and deliver the electric power to the electrolysis unit. Upon receiving the electric power, the electrolysis unit performs electrolysis on the water body circulating to the electrolysis unit, so that a reduction reaction occurs to the oxidizing substances in the water body.

Abstract: An apparatus and a system for hybrid-transmitting and bridging of a circuit service and a packet service are provided. The apparatus includes a TDM framing unit, a TDM three-direction cross unit, and a mapping and encapsulating unit. The TDM framing unit implements conversion between a line layer TDM signal outside the apparatus and channel layer TDM signals inside the apparatus, and transmits the channel layer TDM signals to the TDM three-direction cross unit. The TDM three-direction cross unit implements cross scheduling on the channel layer TDM signals from a TDM cross apparatus, the mapping and encapsulating unit, and the TDM framing unit. The mapping and encapsulating unit implements conversion between a channel layer TDM signal from the TDM three-direction cross unit and packet service signals from the packet processing unit.

Abstract: A hoist, comprising an upper hook (1) and a holder (3) for the upper hook, characterized in that: the hoist also comprising a weighing device (2) with a display (23) which can show the weight of the upper hook (1) bearing; the first end of the weighing device (2) jointed with the upper hook (1), while the second end of the weighing device (2) jointed with the holder (3) for the upper hook. Compared with the prior art, in this invention, a weighing device which can show the value of the weight of lifted goods, is mounted between the upper hook and the holder for the upper hook. It can avoid the possible occurrence of blind overloading due to the non-displaying of the value of the weight, and avoid the unnecessary equipment damage and even the dangerous safety accidents.

Abstract: A water body self-generating electrolytic reduction module is applied to a water body containing oxidizing substances. The water body self-generating electrolytic reduction module includes a self-generating unit and an electrolysis unit. The self-generating unit is coupled to the electrolysis unit. When circulating in a water transmission pipeline, the water body drives the self-generating unit to generate an electric power and deliver the electric power to the electrolysis unit. Upon receiving the electric power, the electrolysis unit performs electrolysis on the water body circulating to the electrolysis unit, so that a reduction reaction occurs to the oxidizing substances in the water body.

Abstract: Method, system, and computer readable medium for determining a fault in a power filter of a wind turbine generator. The method may include the steps of calculating a reactive power consumed by the power filter, and comparing the calculated reactive power to a predefined threshold reactive power to determine the fault.

Abstract: This invention relates to the discovery that both non-particle and particle associated nucleic acids are present in blood plasma and serum and can be used to evaluate disease conditions.

Abstract: The non-invasive detection of fetal chromosomal aneuploidies is demonstrated. Alleles of fetal RNA-SNPs present in a biological sample (e.g. maternal blood) containing fetal RNA are detected and quantified in order to determine the ratio of the alleles. This ratio is compared to a standard control consisting of euploid fetuses. Deviation of allele ratio indicates the presence of chromosomal aneuploidy.