In the context of the rural revitalization strategy and the"High-Quality Development Project for Hundreds of Counties,Thousands of Towns,and Myriads of Villages",the integration of industry and education in ...In the context of the rural revitalization strategy and the"High-Quality Development Project for Hundreds of Counties,Thousands of Towns,and Myriads of Villages",the integration of industry and education in environmental protection majors at universities needs to focus on"demand orientation,technology drive,and collaborative education"as its core.Through curriculum restructuring,joint platform construction,technology empowerment,and policy support,it should form a virtuous cycle of"education chain-industry chain-innovation chain".Under the background of rural revitalization strategy,the present explores practical teaching paths for industry-education integration,including:establishing moral education as the fundamental task for talent cultivation under the rural revitalization strategy;strengthening innovation in curriculum systems and teaching models;implementing a dual-mentor guidance system combining enterprise and academic instructors;adopting comprehensive evaluation systems that integrate theory and practice;improving practical teaching monitoring systems to steadily enhance teaching quality;and effectively strengthening the construction of university-enterprise cooperative bases.展开更多
We evaluated seed production in a first-gener- ation orchard of Chinese pine （Pinus tabuliformis） during the crucial transition period from first generation to advanced generations. Clones varied significantly in al...We evaluated seed production in a first-gener- ation orchard of Chinese pine （Pinus tabuliformis） during the crucial transition period from first generation to advanced generations. Clones varied significantly in all traits related to seed production. Repeatability of these traits ranged from 0 to 0.96. Seed production per ramet （SPPR）, seed producing index （SPI）, the number of relative female strobili （RFS）, the number of scales, and the num- ber of ineffective scales had comparatively high repeata- bility at 0.86, 0.87, 0.89, 0.96, and 0.91, respectively. Correlation analysis showed that SPPR was greatly influenced by RFS and by the number of full seeds per cone. Finally, we showed that SPI was the best predictor of the seed-producing ability of clones. Our findings will assist seed orchard managers in effectively predicting and improving seed production of Chinese pine seed orchards.展开更多
The toxicity of nano-materials has received increasing attention in recent years. Nevertheless, relatively few studies have focused on their oceanic distributions and toxicities. In this study, we assessed nano-ZnO to...The toxicity of nano-materials has received increasing attention in recent years. Nevertheless, relatively few studies have focused on their oceanic distributions and toxicities. In this study, we assessed nano-ZnO toxicity in marine organisms using the yellowstriped goby （Mugilogobius chulae）. The relative differences in nano-ZnO dissolution and dispersal in seawater and fresh water were also investigated. The effects of nano-ZnO on embryonic development, deformity, hatching, mortality, and histopathology were analyzed. In addition, the effects of the Zn2＋ concentration on M. chulae hatching and mortality were compared. The results showed that nano-ZnO had higher solubility in seawater than in fresh water. Nano-ZnO significantly inhibited hatching. By the fifth day of exposure, the LC50 of nano-ZnO was 45.40 mg/L, and the mortality rate spiked. Hatching inhibition and lethality were dose-dependent over a range of 1-25 mg/L nano-ZnO. Zn2＋ inhibited hatching and increased lethality, but its effects were weaker than those of nano-ZnO at the same concentrations. Nano-ZnO also induced spinal bending, oedema, hypoplasia, and other deformities in M. chulae embryos and larvae. Histopathology revealed vacuolar degeneration, hepatocyte and enterocyte enlargement, and morphological abnormalities of the vertebrae. Therefore, nano-ZnO caused malformations in M. chulae by affecting embryonic growth and development. We conclude that nano-ZnO toxicity in seawater was significantly positively correlated with the associated Zn2＋ concentration and sedimentary behaviour. The toxicity of nano-ZnO was cumulative and showed a critical point, beyond which embryonic and developmental toxicity in marine fish was observed.展开更多
基金2024 Zhaoqing University Quality Engineering and Teaching Reform Project"Zhaoqing University——Guangzhou Heyuanda Environmental Protection Development Co.,Ltd.Science,Industry and Education Integration Practice-oriented Education Base"(zlgc 2024002)Zhaoqing University 2024 School-level Ideological and Political Reform Demonstration Project(Zhaoqing University[2024]No.83),Ideological and Political Demonstration Team of Environmental Engineering Professional Courses+1 种基金2024 Zhaoqing University Quality Engineering and Teaching Reform Project"Exploration and Practice of Blended Teaching of Water Pollution Control Engineering Curriculum Design under Digital Background"(zlgc2024092)The Fourth Batch of Innovative Research Teams from Zhaoqing University"Innovative Team for Waste Resource Utilization and Environmental Health under the Background of Carbon Peak and Carbon Neutrality"(TD202408).
文摘In the context of the rural revitalization strategy and the"High-Quality Development Project for Hundreds of Counties,Thousands of Towns,and Myriads of Villages",the integration of industry and education in environmental protection majors at universities needs to focus on"demand orientation,technology drive,and collaborative education"as its core.Through curriculum restructuring,joint platform construction,technology empowerment,and policy support,it should form a virtuous cycle of"education chain-industry chain-innovation chain".Under the background of rural revitalization strategy,the present explores practical teaching paths for industry-education integration,including:establishing moral education as the fundamental task for talent cultivation under the rural revitalization strategy;strengthening innovation in curriculum systems and teaching models;implementing a dual-mentor guidance system combining enterprise and academic instructors;adopting comprehensive evaluation systems that integrate theory and practice;improving practical teaching monitoring systems to steadily enhance teaching quality;and effectively strengthening the construction of university-enterprise cooperative bases.
基金supported by ‘‘the Fundamental Research Funds for the Central Universities(No.2015ZCQ-SW-02)’’ and ‘‘Special Fund for Forestry Scientific Research in the Public Interest(No.201104022)’’
文摘We evaluated seed production in a first-gener- ation orchard of Chinese pine （Pinus tabuliformis） during the crucial transition period from first generation to advanced generations. Clones varied significantly in all traits related to seed production. Repeatability of these traits ranged from 0 to 0.96. Seed production per ramet （SPPR）, seed producing index （SPI）, the number of relative female strobili （RFS）, the number of scales, and the num- ber of ineffective scales had comparatively high repeata- bility at 0.86, 0.87, 0.89, 0.96, and 0.91, respectively. Correlation analysis showed that SPPR was greatly influenced by RFS and by the number of full seeds per cone. Finally, we showed that SPI was the best predictor of the seed-producing ability of clones. Our findings will assist seed orchard managers in effectively predicting and improving seed production of Chinese pine seed orchards.
基金supported by the Science and Technology Programs of Guangdong Province(Nos.2015A020215031,2013B020600007,and 2012B050200002)supported by the National Key Technologies R&D Program of China(No.2015BAI09B05)
文摘The toxicity of nano-materials has received increasing attention in recent years. Nevertheless, relatively few studies have focused on their oceanic distributions and toxicities. In this study, we assessed nano-ZnO toxicity in marine organisms using the yellowstriped goby （Mugilogobius chulae）. The relative differences in nano-ZnO dissolution and dispersal in seawater and fresh water were also investigated. The effects of nano-ZnO on embryonic development, deformity, hatching, mortality, and histopathology were analyzed. In addition, the effects of the Zn2＋ concentration on M. chulae hatching and mortality were compared. The results showed that nano-ZnO had higher solubility in seawater than in fresh water. Nano-ZnO significantly inhibited hatching. By the fifth day of exposure, the LC50 of nano-ZnO was 45.40 mg/L, and the mortality rate spiked. Hatching inhibition and lethality were dose-dependent over a range of 1-25 mg/L nano-ZnO. Zn2＋ inhibited hatching and increased lethality, but its effects were weaker than those of nano-ZnO at the same concentrations. Nano-ZnO also induced spinal bending, oedema, hypoplasia, and other deformities in M. chulae embryos and larvae. Histopathology revealed vacuolar degeneration, hepatocyte and enterocyte enlargement, and morphological abnormalities of the vertebrae. Therefore, nano-ZnO caused malformations in M. chulae by affecting embryonic growth and development. We conclude that nano-ZnO toxicity in seawater was significantly positively correlated with the associated Zn2＋ concentration and sedimentary behaviour. The toxicity of nano-ZnO was cumulative and showed a critical point, beyond which embryonic and developmental toxicity in marine fish was observed.
