Abstract: A display panel and a display apparatus are provided. The display panel includes pixel circuits, light-emitting device electrically connected to the pixel circuits, signal lines electrically connected to the pixel circuits and including signal transmitting lines each extending along a first direction, and a first connection portion located in a circuit region and each extending along a second direction. At least one pixel circuit group is disposed in the circuit region, each pixel circuit group includes at least two pixel circuits of the pixel circuits, and the at least two pixel circuits are arranged along the second direction intersecting the first direction. The at least two pixel circuits in one of the at least one pixel circuit group are electrically connected to one of the signal transmitting lines through the first connection portion.

Abstract: A manufacturing method for low-magnetostrictive oriented silicon steel is provided, wherein the oriented silicon steel comprises a silicon steel substrate and an insulating coating on the surface of the silicon steel substrate. The manufacturing method comprises: performing single-sided laser etching on the silicon steel substrate, wherein the side of the silicon steel substrate, on which single-sided laser etching is performed, is a first surface, and the side opposite to the first surface is a second surface; determining a deflection difference between the first surface and the second surface based on the power of the laser etching, and determining a difference in the amount of the insulating coatings on the first surface and the second surface based on the deflection difference; and forming insulating coatings on the first surface and the second surface.

Abstract: The invention provides a construction method of spinosad heterologous expression strain, a spinosad heterologous expression strain obtained by the method and use thereof in preparing spinosad. The method utilizes a plurality of homologous recombination to replace the erythromycin synthetic gene cluster of Saccharopolyspora erythraea with the spinosad synthetic gene cluster and the rhamnose synthetic gene cluster, such that the Saccharopolyspora erythraea produces spinosad.

Abstract: Provided are a Streptomyces avermitilis strain C63-51 with a high yield of ivermectin B1b and a method for producing ivermectin B1b by using this strain. By using the above-mentioned strain and method, efficient production of single ivermectin B1b can be achieved.

Abstract: The present invention relates to a recombinant microorganism expressing avermectin or analogs thereof and construction method thereof, and also relates to a method of producing avermectin or analogs thereof using the recombinant microorganism, and avermectin or analogs thereof obtained using the method. In addition, the present invention further relates to uses of the avermectin or analogs thereof as insecticides. Using the recombinant microorganism of the present invention to produce avermectin or analogs thereof has numerous advantages, for example comprising at least one of the following: good stability, high yield, simple process, environmentally friendly, and greatly saving of production costs.

Abstract: Disclosed herein are compounds tenvermectin A and B and mixtures of compounds tenvermectin A and B for preventing and treating human or animal parasitic infection. Tenvermectin A and B are macrolide compounds and are produced by genetically engineered bacteria. Tenvermectin A and B are structurally similar to avermectin, ivermectin, milbemycin and emamectin benzoate. The toxicities of tenvermectin A and B are significantly lower than avermectin, ivermectin, milbemycin and emamectin benzoate. The disclosed compounds and mixture of compounds belong to a class of compounds that are useful for killing and eliminating parasites, such as nematodes or arthropods.

Abstract: Disclosed herein are compounds tenvermectin A and B and mixtures of compounds tenvermectin A and B for the control of harmful insects in agricultural and forest crops. The tenvermectin A and/or the tenvermectin B of the present invention have a significant control effect on harmful insects in agricultural and forest crops, for example, Bemisia tabaci, Frankliniella occidentalis Pergande, Laodelphax striatellus, Nilaparvata lugens, Sogatella furcifera, Cnaphalocrocis medinalis, rice Chilo suppressalis, rice Scirpophaga incertulas and Coptotermes formosanus Shiraki, and have low toxicity, and are more environmentally friendly and have good application prospects.

Abstract: A sixteen-membered macrolide compound and use thereof, the compound structure being represented in formula (I), wherein R is CH3 or C2H5. The present compound has a wide range of application in the preparation of chemicals for preventing and controlling insect pests and mites of agriculture and forestry.

Abstract: The invention provides a construction method of spinosad heterologous expression strain, a spinosad heterologous expression strain obtained by the method and use thereof in preparing spinosad. The method utilizes a plurality of homologous recombination to replace the erythromycin synthetic gene cluster of Saccharopolyspora erythraea with the spinosad synthetic gene cluster and the rhamnose synthetic gene cluster, such that the Saccharopolyspora erythraea produces spinosad.

Abstract: A sixteen-membered macrolide compound and use thereof, the compound structure being represented in formula (I), wherein R is CH3 or C2H5. The present compound has a wide range of application in the preparation of chemicals for preventing and controlling insect pests and mites of agriculture and forestry.

Abstract: The present invention relates to a recombinant microorganism expressing avermectin or analogues thereof and construction method thereof, and also relates to a method of producing avermectin or analogues thereof using the recombinant microorganism, and avermectin or analogues thereof obtained using the method. In addition, the present invention further relates to uses of the avermectin or analogues thereof as insecticides. Using the recombinant microorganism of the present invention to produce avermectin or analogues thereof has numerous advantages, for example comprising at least one of the following: good stability, high yield, simple process, environmentally friendly, and greatly saving of production costs.