Abstract: The present invention relates to a crystal form I of tenvermectin B, which can be characterized by X-ray powder diffraction (XRPD) pattern, Infrared (IR) absorption spectrum, Differential scanning calorimetry (DSC) thermogram and the like. Meanwhile, the present invention also relates to a method for preparing the crystal form I of tenvermectin B and a use thereof.

Abstract: The present disclosure relates to a method for quickly identifying disconnection of a Current Transformer (CT) in protection of a 3/2 connection mode based bus. The present disclosure can quickly and accurately identify the disconnection of the CT, thereby avoiding the problem of a maloperation in protection of a bus caused by the disconnection of the CT.

Abstract: The present invention relates to a prevention method of abnormal action protection of UHV regulating compensation transformer with no-load input, the prevention method includes: first determining a value of differential current of regulating compensation transformer, if the value of differential current is smaller than a pre-setting threshold, then, identifying whether an uninterruptible point of differential current waveform meets an pre-setting regulation according to original value of differential current or sampling value of differential difference current, and determining comprehensively whether the regulating compensation transformer is in no-load input or in fault directly with a value of second harmonic content of logic differential current together; if a value of differential current before pre-setting period is larger than the pre-setting threshold, the regulating compensation transformer is diagnosed to have external CT saturation, determining comprehensively whether the regulating compensation tra

Abstract: Sampling implementation method and device based on conventional sampling GOOSE trip mode. CPU of master NPI plug-in, after receiving a second pulse, transmits sampling pulse generation time and a transmission enable bit to FPGA of the master NPI plug-in at a fixed interval; after detecting the transmission enable bit, the FPGA of the master NPI plug-in judges whether time of its internal timer is greater than/equal to the sampling pulse generation time, if yes, generates a sampling pulse to FPGA of collection plug-in; after receiving sampling pulse, the collection plug-in carries out A/D sampling, and transmits sampled data to the master NPI plug-in; when detecting that all A/D samplings are completed, the master NPI plug-in transmits data packets to protection CPU plug-in. The device includes an MMI plug-in, a protection CPU plug-in, a master NPI plug-in and a collection plug-in. Protection maloperation is thereby reduced.

Abstract: One aspect of the present invention discloses an image compression method based on local dynamic quantization. The method includes the following steps: (1) obtaining an image in a raw format, and parsing information about the obtained image; (2) performing image block partitioning on raw data collected from the image; (3) obtaining statistics of pixel values of the image blocks; (4) calculating a quantization step; (5) calculating an offset of each pixel; (6) performing quantization by: performing a division operation on the relative amplitude of each pixel of the current image block and the quantization step; and establishing a new gray-scale value; (7) reconstructing a block-based data structure; and (8) outputting a file. By the method, information of the raw data can be maintained to the greatest extent, and a data storage volume also can be reduced to meet the requirements on data recovery and reediting.

Abstract: One aspect of the present invention discloses an image compression method based on local dynamic quantization. The method includes the following steps: (1) obtaining an image in a raw format, and parsing information about the obtained image; (2) performing image block partitioning on raw data collected from the image; (3) obtaining statistics of pixel values of the image blocks; (4) calculating a quantization step; (5) calculating an offset of each pixel; (6) performing quantization by: performing a division operation on the relative amplitude of each pixel of the current image block and the quantization step; and establishing a new gray-scale value; (7) reconstructing a block-based data structure; and (8) outputting a file. By means of the method, information of the raw data can be maintained to the greatest extent, and a data storage volume also can be reduced to meet the requirements on data recovery and reediting.

Abstract: An angled gas cluster ion beam is used for each sidewall and top of a fin (two applications) to form work-function metal layer(s) only on the sidewalls and top of each fin.

Abstract: An angled gas cluster ion beam is used for each sidewall and top of a fin (two applications) to form work-function metal layer(s) only on the sidewalls and top of each fin.

Abstract: The present disclosure relates to a method for quickly identifying disconnection of a Current Transformer (CT) in protection of a 3/2 connection mode based bus. The present disclosure can quickly and accurately identify the disconnection of the CT, thereby avoiding the problem of a maloperation in protection of a bus caused by the disconnection of the CT.

Abstract: Sampling implementation method and device based on conventional sampling GOOSE trip mode. CPU of master NPI plug-in, after receiving a second pulse, transmits sampling pulse generation time and a transmission enable bit to FPGA of the master NPI plug-in at a fixed interval; after detecting the transmission enable bit, the FPGA of the master NPI plug-in judges whether time of its internal timer is greater than/equal to the sampling pulse generation time, if yes, generates a sampling pulse to FPGA of collection plug-in; after receiving sampling pulse, the collection plug-in carries out A/D sampling, and transmits sampled data to the master NPI plug-in; when detecting that all A/D samplings are completed, the master NPI plug-in transmits data packets to protection CPU plug-in. The device includes an MMI plug-in, a protection CPU plug-in, a master NPI plug-in and a collection plug-in. Protection maloperation is thereby reduced.

Abstract: The present invention relates to a prevention method of abnormal action protection of UHV regulating compensation transformer with no-load input, the prevention method includes: first determining a value of differential current of regulating compensation transformer, if the value of differential current is smaller than a pre-setting threshold, then, identifying whether an uninterruptible point of differential current waveform meets an pre-setting regulation according to original value of differential current or sampling value of differential difference current, and determining comprehensively whether the regulating compensation transformer is in no-load input or in fault directly with a value of second harmonic content of logic differential current together; if a value of differential current before pre-setting period is larger than the pre-setting threshold, the regulating compensation transformer is diagnosed to have external CT saturation, determining comprehensively whether the regulating compensation tra