Thirty genotypes from rice germplasm were identified under photooxidation and shading condition and divided into four basic types : (1) cultivars tolerant to both photooxidation and shading, (2) cultivars tolerant to...Thirty genotypes from rice germplasm were identified under photooxidation and shading condition and divided into four basic types : (1) cultivars tolerant to both photooxidation and shading, (2) cultivars tolerant to photooxidation but sensitive to shading, (3) cultivars tolerant to shading but sensitive to photooxidation, and (4) cultivars sensitive to photooxidation and shading. A comparative study of photosynthetic characteristics of a cultivar (cv. Wuyujing 3) that is tolerant and a cultivar (cv. Xiangxian) that is sensitive to both photoinhibition and shading showed that the photochemical efficiency of PSⅡ ( F v/F m ) and the content of PSⅡ_D1 protein in the tolerant cultivar “Wuyujing 3” decreased less under photoinhibition conditions as compared with “Xiangxian”. Under photooxidation conditions, superoxide dismutase was induced rapidly to a higher level and the active oxygen O - built up to a lower level in “Wuyujing 3” than in “Xiangxian”. At the same time, the photosynthetic rate decreased by 23% in “Wuyujing 3” vs. 64% in “Xiangxian”. Shading (20% natural light) during the booting stage caused only small decreases (7%-13%) in RuBisCO activity and the photosynthetic rate in “Wuyujing 3” but showed marked decreases (57%-64%) in “Xiangxian” which corresponded to the decreases in grain yield in the two cultivars (38% and 73%, respectively). The correlation analysis showed that the tolerance to photooxidation is mainly related to PSⅡ_D1 and that to shading is mainly related to RuBisCO activity. This study provided a simple and effective screening method and physiological basis for crop breeding in enhancing tolerance to both high and low radiation.展开更多
Ruby on Rails(简称ROR)是一个Web应用程序框架,以其能快速开发而备受敏捷开发实践者的推崇,它包含的重要概念有MVC模式、DSL、习惯约定优于配置、生成器、低重复等.以一个实际课题"中医药数据库共享平台"为例,研究如何应用RO...Ruby on Rails(简称ROR)是一个Web应用程序框架,以其能快速开发而备受敏捷开发实践者的推崇,它包含的重要概念有MVC模式、DSL、习惯约定优于配置、生成器、低重复等.以一个实际课题"中医药数据库共享平台"为例,研究如何应用ROR技术来满足一个实际需求的项目,涉及的技术有MVC模式、RESTful SOA、AJAX、Lighttpd&FCGI等.展开更多
随着Web服务的快速发展,基于REST(Representational State Transfer)风格的Web Service越来越受到业界的关注。在实现RESTful Web Service的众多框架中,Rails完整实现了MVC并对RESTful Web Service的开发作了极大的封装和简化,使得开发...随着Web服务的快速发展,基于REST(Representational State Transfer)风格的Web Service越来越受到业界的关注。在实现RESTful Web Service的众多框架中,Rails完整实现了MVC并对RESTful Web Service的开发作了极大的封装和简化,使得开发人员用Rails实现RESTful Web Service变得容易。对RESTful Web Service特征和Rails框架结构进行了概述,分析了Rails实现RESTfulWeb Service的原理,在此基础上结合实例给出了基于Rails的RESTful Web Service以及RESTful Web Service客户端的开发步骤和方法,并且利用Ruby进行了实现。展开更多
运用目前两种炙手可热的Web开发技术:AJAX和Ruby on Rails为WebGIS提供一个新的解决方案,AJAX技术作为一种新兴的网络技术比传统页面刷新模式具有更好的性能和友好的用户体验,不过在建立大量的Javascript的代码基础上的,本文通过对AJAX ...运用目前两种炙手可热的Web开发技术:AJAX和Ruby on Rails为WebGIS提供一个新的解决方案,AJAX技术作为一种新兴的网络技术比传统页面刷新模式具有更好的性能和友好的用户体验,不过在建立大量的Javascript的代码基础上的,本文通过对AJAX on Rails原理进行分析,运用Ruby on Rails的动态性和敏捷性使AJAX模式带来的程序量大、首页加载时间长的缺陷得到改善,进一步提高程序性能。在实现环节上,在该平台上结合使用Google Maps API,以GXmlHttp在Rails上实现了AJAX的WebGIS关键应用。展开更多
基于Ruby语言构建的全新的Web开发框架Ruby on Rails,为Web应用程序开发提供了极其便捷的途径,近年来的迅速兴起成为了Web开发社区的焦点.采用支持敏捷开发的Ruby on Rails框架,研究并设计了一个新型体育门户网站,并重点介绍了网站各模...基于Ruby语言构建的全新的Web开发框架Ruby on Rails,为Web应用程序开发提供了极其便捷的途径,近年来的迅速兴起成为了Web开发社区的焦点.采用支持敏捷开发的Ruby on Rails框架,研究并设计了一个新型体育门户网站,并重点介绍了网站各模块的主要功能以及实现的关键技术.展开更多
文摘Thirty genotypes from rice germplasm were identified under photooxidation and shading condition and divided into four basic types : (1) cultivars tolerant to both photooxidation and shading, (2) cultivars tolerant to photooxidation but sensitive to shading, (3) cultivars tolerant to shading but sensitive to photooxidation, and (4) cultivars sensitive to photooxidation and shading. A comparative study of photosynthetic characteristics of a cultivar (cv. Wuyujing 3) that is tolerant and a cultivar (cv. Xiangxian) that is sensitive to both photoinhibition and shading showed that the photochemical efficiency of PSⅡ ( F v/F m ) and the content of PSⅡ_D1 protein in the tolerant cultivar “Wuyujing 3” decreased less under photoinhibition conditions as compared with “Xiangxian”. Under photooxidation conditions, superoxide dismutase was induced rapidly to a higher level and the active oxygen O - built up to a lower level in “Wuyujing 3” than in “Xiangxian”. At the same time, the photosynthetic rate decreased by 23% in “Wuyujing 3” vs. 64% in “Xiangxian”. Shading (20% natural light) during the booting stage caused only small decreases (7%-13%) in RuBisCO activity and the photosynthetic rate in “Wuyujing 3” but showed marked decreases (57%-64%) in “Xiangxian” which corresponded to the decreases in grain yield in the two cultivars (38% and 73%, respectively). The correlation analysis showed that the tolerance to photooxidation is mainly related to PSⅡ_D1 and that to shading is mainly related to RuBisCO activity. This study provided a simple and effective screening method and physiological basis for crop breeding in enhancing tolerance to both high and low radiation.
文摘Ruby on Rails(简称ROR)是一个Web应用程序框架,以其能快速开发而备受敏捷开发实践者的推崇,它包含的重要概念有MVC模式、DSL、习惯约定优于配置、生成器、低重复等.以一个实际课题"中医药数据库共享平台"为例,研究如何应用ROR技术来满足一个实际需求的项目,涉及的技术有MVC模式、RESTful SOA、AJAX、Lighttpd&FCGI等.
文摘随着Web服务的快速发展,基于REST(Representational State Transfer)风格的Web Service越来越受到业界的关注。在实现RESTful Web Service的众多框架中,Rails完整实现了MVC并对RESTful Web Service的开发作了极大的封装和简化,使得开发人员用Rails实现RESTful Web Service变得容易。对RESTful Web Service特征和Rails框架结构进行了概述,分析了Rails实现RESTfulWeb Service的原理,在此基础上结合实例给出了基于Rails的RESTful Web Service以及RESTful Web Service客户端的开发步骤和方法,并且利用Ruby进行了实现。
文摘运用目前两种炙手可热的Web开发技术:AJAX和Ruby on Rails为WebGIS提供一个新的解决方案,AJAX技术作为一种新兴的网络技术比传统页面刷新模式具有更好的性能和友好的用户体验,不过在建立大量的Javascript的代码基础上的,本文通过对AJAX on Rails原理进行分析,运用Ruby on Rails的动态性和敏捷性使AJAX模式带来的程序量大、首页加载时间长的缺陷得到改善,进一步提高程序性能。在实现环节上,在该平台上结合使用Google Maps API,以GXmlHttp在Rails上实现了AJAX的WebGIS关键应用。
