数字孪生作为一项新的数字化关键技术,与人工智能(Artificial intelligence,AI)、云计算、扩展现实和物联网(Internet of things,IoT)等New IT技术结合,能够给智慧生活领域带来更大的发展前景。本研究主要介绍数字孪生的定义与发展,分...数字孪生作为一项新的数字化关键技术,与人工智能(Artificial intelligence,AI)、云计算、扩展现实和物联网(Internet of things,IoT)等New IT技术结合,能够给智慧生活领域带来更大的发展前景。本研究主要介绍数字孪生的定义与发展,分析当前数字孪生在理论模型、信息物理融合、智慧城市及软件使用等方面的研究现状,总结不同专业对数字孪生标准体系的需求并提供已有的数字孪生标准体系,阐述数字孪生在智慧生活中应用的关键技术。最后,探讨数字孪生技术在智慧图书馆领域、智慧教育领域、智慧机场领域、智慧医疗领域及智能家居领域的应用和发展趋势,并举例介绍本研究团队在智慧油田领域运用数字孪生模拟稠油热采过程。展开更多
Carbon aerogels were synthesized via ambient pressure drying process using resorcinolformaldehyde as precursor and P123 to strengthen their skeletons. CO_2 activation technology was implemented to improve surface area...Carbon aerogels were synthesized via ambient pressure drying process using resorcinolformaldehyde as precursor and P123 to strengthen their skeletons. CO_2 activation technology was implemented to improve surface areas and adjust pore size distribution. The synthesis process was optimized, and the morphology, structure, adsorption properties and electrochemical behavior of different samples were characterized. The CO_2-activated samples achieved a high specific capacitance of 129.2 F/g in 6 M KOH electrolytes at the current density of 1 m A/cm2 within the voltage range of 0-0.8 V. The optimized activation temperature and duration were determined to be 950 ℃ and 4 h, respectively.展开更多
[Objective] The paper was to investigate effects of glyphosate stress on physiological characteristics and protein expression of photosystem Ⅱ(PSⅡ) in genentically modified soybean GTS 40-3-2 seedlings under severe ...[Objective] The paper was to investigate effects of glyphosate stress on physiological characteristics and protein expression of photosystem Ⅱ(PSⅡ) in genentically modified soybean GTS 40-3-2 seedlings under severe drought condition. [Method] A pot experiment was carried out in growth chamber to determine the response of genetically modified soybean treated by severe drought stress and different concentrations of glyphosate at the third compound leaf stage. [Result] Severe drought treatment increased the electrolyte leakage(EL), superoxide dismutase(SOD) and peroxidase(POD) activities, and decreased the relative water content(RWC), chlorophyll content, and catalase(CAT) activity. The EL, SOD and POD activities were significantly increased in severe drought and glyphosate treatments, which were related to glyphosate concentrations. The chlorophyll content decreased, which was also related to glyphosate concentrations. But the BWC and CAT activity were not affected by glyphosate concentrations. Western blot displayed that PSⅡ protein Lhcb2 was not affected by stress conditions and stably expressed. D1, D2 and Lhcb4 protein level decreased, and there was no significant change in Lhcb1 expression under severe drought stress. The protein levels of D1, D2, Lhcb1 and Lhcb4 decreased with the increase of glyphosate concentrations under severe drought and glyphosate stress. When the glyphosate concentrations were 0.92 and 1.84 kg·ai/hm^2, the protein levels of D1, D2 and Lhcb4 were slightly higher than those in severe drought stress. When the glyphosate concentrations were 3.68 and 7.36 kg·ai/hm^2, the protein level of D1, D2, Lhcb1 and Lhcb4 decreased sharply. [Conclusion] This research provides a theoretical basis for production of genetically modified soybean.展开更多
文摘数字孪生作为一项新的数字化关键技术,与人工智能(Artificial intelligence,AI)、云计算、扩展现实和物联网(Internet of things,IoT)等New IT技术结合,能够给智慧生活领域带来更大的发展前景。本研究主要介绍数字孪生的定义与发展,分析当前数字孪生在理论模型、信息物理融合、智慧城市及软件使用等方面的研究现状,总结不同专业对数字孪生标准体系的需求并提供已有的数字孪生标准体系,阐述数字孪生在智慧生活中应用的关键技术。最后,探讨数字孪生技术在智慧图书馆领域、智慧教育领域、智慧机场领域、智慧医疗领域及智能家居领域的应用和发展趋势,并举例介绍本研究团队在智慧油田领域运用数字孪生模拟稠油热采过程。
基金Funded by the National High Technology Research and Development Program(863 Program)(No.2013AA050905),China Academy of Engineering Physics,Mianyang,China
文摘Carbon aerogels were synthesized via ambient pressure drying process using resorcinolformaldehyde as precursor and P123 to strengthen their skeletons. CO_2 activation technology was implemented to improve surface areas and adjust pore size distribution. The synthesis process was optimized, and the morphology, structure, adsorption properties and electrochemical behavior of different samples were characterized. The CO_2-activated samples achieved a high specific capacitance of 129.2 F/g in 6 M KOH electrolytes at the current density of 1 m A/cm2 within the voltage range of 0-0.8 V. The optimized activation temperature and duration were determined to be 950 ℃ and 4 h, respectively.
基金Supported by Youth Fund of Genetic Engineering of Provincial Finance(2018QNJJ-023)Applied Basic Research of Sichuan Science and Technology Program(2018JY0153)Excellent Thesis Fund Project of Genetic Engineering of Provincial Finance(2016 LWJJ-010)
文摘[Objective] The paper was to investigate effects of glyphosate stress on physiological characteristics and protein expression of photosystem Ⅱ(PSⅡ) in genentically modified soybean GTS 40-3-2 seedlings under severe drought condition. [Method] A pot experiment was carried out in growth chamber to determine the response of genetically modified soybean treated by severe drought stress and different concentrations of glyphosate at the third compound leaf stage. [Result] Severe drought treatment increased the electrolyte leakage(EL), superoxide dismutase(SOD) and peroxidase(POD) activities, and decreased the relative water content(RWC), chlorophyll content, and catalase(CAT) activity. The EL, SOD and POD activities were significantly increased in severe drought and glyphosate treatments, which were related to glyphosate concentrations. The chlorophyll content decreased, which was also related to glyphosate concentrations. But the BWC and CAT activity were not affected by glyphosate concentrations. Western blot displayed that PSⅡ protein Lhcb2 was not affected by stress conditions and stably expressed. D1, D2 and Lhcb4 protein level decreased, and there was no significant change in Lhcb1 expression under severe drought stress. The protein levels of D1, D2, Lhcb1 and Lhcb4 decreased with the increase of glyphosate concentrations under severe drought and glyphosate stress. When the glyphosate concentrations were 0.92 and 1.84 kg·ai/hm^2, the protein levels of D1, D2 and Lhcb4 were slightly higher than those in severe drought stress. When the glyphosate concentrations were 3.68 and 7.36 kg·ai/hm^2, the protein level of D1, D2, Lhcb1 and Lhcb4 decreased sharply. [Conclusion] This research provides a theoretical basis for production of genetically modified soybean.
