Silver nanoparticles have mainly been studied for their antimicrobial potential against bacteria, but have also proven to be active against several types of viruses, even against pebrine as well. Methods: Petri dishes...Silver nanoparticles have mainly been studied for their antimicrobial potential against bacteria, but have also proven to be active against several types of viruses, even against pebrine as well. Methods: Petri dishes and transmission electronic microscope were applied to observe silver nanoparticles against bacteria strains and nuclear polyhedral viruses (NPV) and cytoplasmic polyhedral viruses (CPV). For biological test, 108 CFU/mL NPV with strong pathogenicity, and the NPV samples treated with 1:100 ratio of “Sumerian Silver” for 8 hrs were sprayed on the mulberry leaves, respectively, for silkworm rearing. Conclusion: Silver nanoparticle solution showed a strong bactericidal effect against both G+ and G﹣bacterial pathogenic strains from Bombyx mori and mulberry. Under transmission electronic microscope (TEM), Bacillus sp. Samples showed light particles in the cells when treated with silver nanoparticles, in contrast, untreated samples showed homogeneity contents. Further, NPV particles showed no significant differences between treated and untreated samples, but CPV showed strong effects that almost all CPV were collapsed. For biological test, “Sumerian Silver” treated NPV showed no diseased silkworm but nearly all silkworms were dead with no treatment. It seems like that silver nanoparticles were proved to be more effective against CPV than that of NPV. The significant differences between two antivirus or virucidal mechanism should be greatly aroused the scientific interest.展开更多
With many years of benign development,Dongtai City has established a complete technical system for the sericulture industry,an advanced industrialized operation mode,a mature operation mechanism of trade,industry and ...With many years of benign development,Dongtai City has established a complete technical system for the sericulture industry,an advanced industrialized operation mode,a mature operation mechanism of trade,industry and agriculture,and a perfect social service mode.The production level of sericulture in Dongtai City is constantly improved. However,there are still problems such as small scale of individual household,slow technological progress,low level of industrial mechanization and labor saving,and hidden dangers in safe production of sericulture. It is recommended to fully build mulberry gardens and lay a solid foundation for the sericulture industry; implement compound operations to increase the level of income growth; deepen three major innovations,break through the bottlenecks; expand industrial functions,promote integrated development,and accelerate the high quality development of the sericulture industry in Dongtai City.展开更多
Light, heat and water resources in Huicheng Basin had significant advantages, and Huicheng Basin was an ideal area for planting mulberry and breeding silkworm. Climate was mild and humid in the basin, and frost-free p...Light, heat and water resources in Huicheng Basin had significant advantages, and Huicheng Basin was an ideal area for planting mulberry and breeding silkworm. Climate was mild and humid in the basin, and frost-free period was long, which provided favorable condition for planting mulberry and breeding silkworm. Main meteorological disasters affecting mulberry growth included late frost in spring, drought in end spring and early sum- mer. Continuous rain in autumn had certain influence on sericulture, but was favorable for mulberry wintering and growth in opting. At present, carrying capacity of the silkworm in the basin also had large space, and planting mulberry and breeding silkworm had wide developing prospect.展开更多
文摘Silver nanoparticles have mainly been studied for their antimicrobial potential against bacteria, but have also proven to be active against several types of viruses, even against pebrine as well. Methods: Petri dishes and transmission electronic microscope were applied to observe silver nanoparticles against bacteria strains and nuclear polyhedral viruses (NPV) and cytoplasmic polyhedral viruses (CPV). For biological test, 108 CFU/mL NPV with strong pathogenicity, and the NPV samples treated with 1:100 ratio of “Sumerian Silver” for 8 hrs were sprayed on the mulberry leaves, respectively, for silkworm rearing. Conclusion: Silver nanoparticle solution showed a strong bactericidal effect against both G+ and G﹣bacterial pathogenic strains from Bombyx mori and mulberry. Under transmission electronic microscope (TEM), Bacillus sp. Samples showed light particles in the cells when treated with silver nanoparticles, in contrast, untreated samples showed homogeneity contents. Further, NPV particles showed no significant differences between treated and untreated samples, but CPV showed strong effects that almost all CPV were collapsed. For biological test, “Sumerian Silver” treated NPV showed no diseased silkworm but nearly all silkworms were dead with no treatment. It seems like that silver nanoparticles were proved to be more effective against CPV than that of NPV. The significant differences between two antivirus or virucidal mechanism should be greatly aroused the scientific interest.
文摘With many years of benign development,Dongtai City has established a complete technical system for the sericulture industry,an advanced industrialized operation mode,a mature operation mechanism of trade,industry and agriculture,and a perfect social service mode.The production level of sericulture in Dongtai City is constantly improved. However,there are still problems such as small scale of individual household,slow technological progress,low level of industrial mechanization and labor saving,and hidden dangers in safe production of sericulture. It is recommended to fully build mulberry gardens and lay a solid foundation for the sericulture industry; implement compound operations to increase the level of income growth; deepen three major innovations,break through the bottlenecks; expand industrial functions,promote integrated development,and accelerate the high quality development of the sericulture industry in Dongtai City.
文摘Light, heat and water resources in Huicheng Basin had significant advantages, and Huicheng Basin was an ideal area for planting mulberry and breeding silkworm. Climate was mild and humid in the basin, and frost-free period was long, which provided favorable condition for planting mulberry and breeding silkworm. Main meteorological disasters affecting mulberry growth included late frost in spring, drought in end spring and early sum- mer. Continuous rain in autumn had certain influence on sericulture, but was favorable for mulberry wintering and growth in opting. At present, carrying capacity of the silkworm in the basin also had large space, and planting mulberry and breeding silkworm had wide developing prospect.
