DNA/octadecylamine(ODA) monolayers were transferred onto silicon substrates and the morphologies of the monolayers were investigated by Atomic Force Microscope(AFM). AFM images show that the morphologies of DNA dissol...DNA/octadecylamine(ODA) monolayers were transferred onto silicon substrates and the morphologies of the monolayers were investigated by Atomic Force Microscope(AFM). AFM images show that the morphologies of DNA dissolved in pure water are very different from those of DNA dissolved in the NaCl solution. When DNA molecules are dissovled in pure water, they will form ball-like structure in the monolayer. When the DNA molecules are dissolved in NaCl solution, they will form bunch lines. This DNA line offers a valuable template to direct the formation of unique inorganic nanomaterials.展开更多
In this paper,it gives the definition of the category of ■-sets and bi-induced maps whose true value set is a Locale,a complete Heyting algebra.In this category it defines the L_b-monomorphisms and the L_b-epimorphis...In this paper,it gives the definition of the category of ■-sets and bi-induced maps whose true value set is a Locale,a complete Heyting algebra.In this category it defines the L_b-monomorphisms and the L_b-epimorphisms.Especially,it gives the definition,the judgmental theorem of L_b-coequalizers.Furthermore,it defines L_b-regular epimorphisms and proves the judgmental theorem.At the end it concludes a result:the category of ■-sets and bi-induced maps is finitely cocomplete.展开更多
微信小程序凭借其便捷性、轻量化、社交属性及开发成本低等优势,已成为移动应用开发的重要方向。本文基于中国铁塔“通信塔”向“数字塔”转型的实际需求,设计并开发了一款基于微信小程序的LBS(Location Based Services,LBS)定位管理系...微信小程序凭借其便捷性、轻量化、社交属性及开发成本低等优势,已成为移动应用开发的重要方向。本文基于中国铁塔“通信塔”向“数字塔”转型的实际需求,设计并开发了一款基于微信小程序的LBS(Location Based Services,LBS)定位管理系统,用于通信塔站址勘察及外业管理。该系统通过整合地图服务、多坐标系转换及数据交互功能,优化了传统外出作业工作流程,显著提升了勘察效率,节约了30%以上的时间与人力成本。此外,系统通过数据增值服务(如智能导航、多业务集成)拓展了应用场景,为通信基础设施的数字化管理提供了创新解决方案。展开更多
近几年来,生物传感器的研究工作发展非常迅速,新概念、新设想不断出现,使得生物传感器在环保,临床诊断、生命控制以及军事等方面的应用日趋广泛。葡萄糖酶(GOD)生物传感器是这类具有重要作用的生物传感器的一种,它不仅能测定葡萄糖,还...近几年来,生物传感器的研究工作发展非常迅速,新概念、新设想不断出现,使得生物传感器在环保,临床诊断、生命控制以及军事等方面的应用日趋广泛。葡萄糖酶(GOD)生物传感器是这类具有重要作用的生物传感器的一种,它不仅能测定葡萄糖,还能形成多酶体系,测定蔗糖、乳糖和磷酸根等物质。许多文章报导了 GOD 生物传感器的研究工作。我们曾报导过以聚吡咯为衬底,上面涂上 LB 膜的 GOD 生物传感器在医学领域内对发展微型和方便的 GOD 生物传感器的需求在不断的增加。为了使电极便于微型化,本工作在我们已制得的三电极的电池上加以改进。展开更多
LB film of new hybrid Polyquinolin/Trilacunary heteropolytungstoilicate (PQ/SiW9) was prepared and characterized by π-A isotherm, UV-Vis absorption spectroscopy, atomic force microscope(AFM), fluorescence spectroscop...LB film of new hybrid Polyquinolin/Trilacunary heteropolytungstoilicate (PQ/SiW9) was prepared and characterized by π-A isotherm, UV-Vis absorption spectroscopy, atomic force microscope(AFM), fluorescence spectroscopy. The results indicated that they had good film-forming property on the air-water interface. The molecular areas for these monolayers at zero pressure were estimated to be 7.2 nm2·mol-1. The collapse pressure of LB film was 46 mN·m-1. Their I^V curves results showed that the title LB films had good electric conductivity and the conductivity of the LB film increased with monolayers number.展开更多
文摘DNA/octadecylamine(ODA) monolayers were transferred onto silicon substrates and the morphologies of the monolayers were investigated by Atomic Force Microscope(AFM). AFM images show that the morphologies of DNA dissolved in pure water are very different from those of DNA dissolved in the NaCl solution. When DNA molecules are dissovled in pure water, they will form ball-like structure in the monolayer. When the DNA molecules are dissolved in NaCl solution, they will form bunch lines. This DNA line offers a valuable template to direct the formation of unique inorganic nanomaterials.
基金Foundation item： Supported by the National Natural Science Foundation of China（10871137）
文摘In this paper,it gives the definition of the category of ■-sets and bi-induced maps whose true value set is a Locale,a complete Heyting algebra.In this category it defines the L_b-monomorphisms and the L_b-epimorphisms.Especially,it gives the definition,the judgmental theorem of L_b-coequalizers.Furthermore,it defines L_b-regular epimorphisms and proves the judgmental theorem.At the end it concludes a result:the category of ■-sets and bi-induced maps is finitely cocomplete.
文摘微信小程序凭借其便捷性、轻量化、社交属性及开发成本低等优势,已成为移动应用开发的重要方向。本文基于中国铁塔“通信塔”向“数字塔”转型的实际需求,设计并开发了一款基于微信小程序的LBS(Location Based Services,LBS)定位管理系统,用于通信塔站址勘察及外业管理。该系统通过整合地图服务、多坐标系转换及数据交互功能,优化了传统外出作业工作流程,显著提升了勘察效率,节约了30%以上的时间与人力成本。此外,系统通过数据增值服务(如智能导航、多业务集成)拓展了应用场景,为通信基础设施的数字化管理提供了创新解决方案。
文摘近几年来,生物传感器的研究工作发展非常迅速,新概念、新设想不断出现,使得生物传感器在环保,临床诊断、生命控制以及军事等方面的应用日趋广泛。葡萄糖酶(GOD)生物传感器是这类具有重要作用的生物传感器的一种,它不仅能测定葡萄糖,还能形成多酶体系,测定蔗糖、乳糖和磷酸根等物质。许多文章报导了 GOD 生物传感器的研究工作。我们曾报导过以聚吡咯为衬底,上面涂上 LB 膜的 GOD 生物传感器在医学领域内对发展微型和方便的 GOD 生物传感器的需求在不断的增加。为了使电极便于微型化,本工作在我们已制得的三电极的电池上加以改进。
文摘LB film of new hybrid Polyquinolin/Trilacunary heteropolytungstoilicate (PQ/SiW9) was prepared and characterized by π-A isotherm, UV-Vis absorption spectroscopy, atomic force microscope(AFM), fluorescence spectroscopy. The results indicated that they had good film-forming property on the air-water interface. The molecular areas for these monolayers at zero pressure were estimated to be 7.2 nm2·mol-1. The collapse pressure of LB film was 46 mN·m-1. Their I^V curves results showed that the title LB films had good electric conductivity and the conductivity of the LB film increased with monolayers number.
