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文章从“展览描述”、“展览性格分析”、“展览学术分析”三个层面对张永和作为独立策展人的首届深圳“城市\建筑”双年展进行解读与剖析。 相似文献
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本文简述了2005年造纸业各上市公司的主要业绩,并对其发展前景作了简要分析和展望。 相似文献
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随着全球化进程的加快和网络技术的高速发展,高校多校区办学成为一种趋势,传统的信息管理系统已难以满足校园信息资源充分利用和高效管理的要求。针对此现状.研究B/S体系架构,使用Visual Studio2008、ASP.NET3.5、SQL Server2005等技术设计开发一种新型校园在线管理系统。系统主要包括用户登录及注销模块、大学管理员模块、校区管理员模块、教师模块、学生模块、权限管理模块等。 相似文献
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吴西燕 《电脑编程技巧与维护》2012,(22):50-51
触发器是在数据库中数据表的特殊的存储过程,是数据库强制业务规则和数据完整性控制的一种主要机制。讨论了触发器在旅行社管理信息系统中的实际应用。 相似文献
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为了解决企业报价的自动化建设,利用Visual Studio 2005和SQL Server 2005开发了一个基于网络(Web)的模具报价系统.介绍了Web系统的三层应用模式,对系统的设计思想、网络结构、功能模块及其数据库的设计的相关方面做了介绍,对系统的实现也做了阐述.最后给出了一个实例来说明这个系统核心部分的功效.设计出的基于Web的报价系统(B/S)能够很好的满足企业生产要求. 相似文献
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Sawsan A. Rahimuddin Samir M. Khoja Marzoki M. Zuhair Nazlin K. Howell Jonathan E. Brown 《European Journal of Lipid Science and Technology》2007,109(7):647-655
Ultraviolet A (UVA) radiation causes oxidative damage to human skin cells. This damage may be reduced or prevented using plant compounds as photoprotectants. To investigate the relationship between chemical structure and UVA‐protective activity, three structurally related flavonoids, namely luteolin, luteolin‐7‐O‐glucoside (both present in artichoke) and luteolin‐4'‐O‐glucoside (present in wild carrot), were studied. Human skin fibroblasts exposed to UVA (250 and 500 kJ/m2) were treated with each flavonoid (30 µM) for 18 h prior to irradiation. The extent of lipid peroxidation in the cellular extracts was assessed as lipid peroxides and malondialdehyde (MDA). Luteolin and luteolin‐7‐O‐glucoside both prevented a significant increase in lipid peroxides at 250 kJ/m2, but at 500 kJ/m2 their effectiveness was clearly attenuated. Contrastingly, luteolin‐4'‐O‐glucoside was pro‐oxidant at both radiation doses. Measurements of MDA levels highlighted that luteolin was clearly more effective than the two glucosides at both 250 and 500 kJ/m2. Overall, these results show clear differences between the three flavonoids and suggest that the B ring 3',4'‐dihydroxy group, lacking in luteolin‐4'‐O‐glucoside, may be particularly important. Flavonoid: transition metal ion chelation studies confirmed the influence of the 3',4'‐dihydroxy group, which is also relevant to the quenching of singlet oxygen. These features as well as the greater lipophilic nature of luteolin together explain the superior activity of this flavonoid which may be potentially useful as a supplement in photoprotective skin preparations. 相似文献