Abstract: The present application relates to a method for statistical distribution characterization of dendritic structures in original position of single crystal superalloy, and relates to the technical field of analysis of metal material composition and microstructure, comprising the following steps: step 1, processing a to-be-tested sample and determining a calibration coefficient; step 2, obtaining a two-dimensional element content distribution map of the to-be-tested sample; and step 3, determining the number and average spacing of primary dendrites. A composition distribution region analyzed in the present application is larger than the area of a distribution region of the traditional microscopic analysis method, and the sample preparation is simple. The distribution, number and average spacing of the primary dendrites can be obtained without metallographic corrosion sampling.

Abstract: A CC-NBS-LRR gene NLR1-V encoded by the enduring and broad-spectrum gene Pm21 which is resistant to powdery mildew in the wheat-Haynaldia villosa 6VS/6AL translocation line in Nannong 9918, and an expression vector and use thereof. The ORF sequence of the NLR1-V gene having an NLR domain is as shown in SEQ ID NO: 1, and the encoded amino acid sequence is as shown in SEQ ID NO: 2.

Abstract: A system and method for preventing voltage collapse of a wind turbine power system includes receiving a power input value and a voltage input value from a point of common coupling of the wind turbine power system. The method also includes determining a limit cycle reference point of the wind turbine power system as a function of the input values. The method further includes comparing the limit cycle reference point to at least one predetermined threshold. If the limit cycle reference point is greater than the at least one predetermined threshold, the method includes determining a delta value for the real and reactive voltage commands of the wind turbine power system. Further, the method includes determining updated real and reactive voltage commands based on the delta value. As such, the method also includes operating the wind turbine power system based on the updated real and reactive voltage commands.

Abstract: A multifunctional cylindrical stationery case, including a bottom shell provided with a trough; a first side edge of the trough is provided with a case cover having the same shape as the trough and which is capable of being flipped open; a second side edge of the trough is provided with a trough covering panel which is capable to be flipped open; a cover trough is provided in the case cover; a side edge of the case cover is provided with a cover trough covering panel which is capable to be flipped open; openings are provided at a corners of the cover trough covering panel and the trough covering panel respectively; one end of the bottom shell is provided with a circular platform; when the case cover covers the trough, an outer contour of the case cover aligns with an outer contour of the circular platform.

Abstract: A CC-NBS-LRR gene NLR1-V encoded by the enduring and broad-spectrum gene Pm21 which is resistant to powdery mildew in the wheat-Haynaldiavillosa 6VS/6AL translocation line in Nannong 9918, and an expression vector and use thereof. The ORF sequence of the Gene NLR1-V having an NLR domain is as shown in SEQ ID NO: 1, and the encoded amino acid sequence is as shown in SEQ ID NO: 2.

Abstract: A system and method for preventing voltage collapse of a wind turbine power system includes receiving a power input value and a voltage input value from a point of common coupling of the wind turbine power system. The method also includes determining a limit cycle reference point of the wind turbine power system as a function of the input values. The method further includes comparing the limit cycle reference point to at least one predetermined threshold. If the limit cycle reference point is greater than the at least one predetermined threshold, the method includes determining a delta value for the real and reactive voltage commands of the wind turbine power system. Further, the method includes determining updated real and reactive voltage commands based on the delta value. As such, the method also includes operating the wind turbine power system based on the updated real and reactive voltage commands.

Abstract: The present disclosure provides a molecular marker linked to Fusarium wilt resistance gene in tomato, and a method for obtaining the molecular marker linked to Fusarium wilt resistance gene in tomato. The molecular marker according to the present disclosure has a high specificity, and can be used to identify the resistance to Fusarium oxysporum f. sp. Physiological race 3 quickly and improve the breeding efficiency of the seeds resistant to Fusarium oxysporum f. sp. Physiological race 3. The molecular marker linked to Fusarium wilt resistance gene in tomato according to the present disclosure is prepared simply and has a low production cost. The molecular marker according to the present disclosure can be used to identify the resistance to Fusarium oxysporum f. sp. Physiological race 3, screen the tomato single plant which is resistant to Fusarium oxysporum f. sp.