风力与丹采齐舞——从《诗品》对曹植的评价看钟嵘的诗歌审美观

钟嵘在《诗品》中以曹植五言诗的"骨气奇高,词采华茂"为审美标准来品评其余120多位诗人,他这种重风骨和丹采的审美倾向对当时和后世的诗歌创作和诗歌审美都产生了积极的影响。在重风骨方面,它是对汉魏以来竞靡丽的文坛风气的拨正;在重丹采方面,客观上推动了诗歌自身的发展,突出了"文的自觉"这一特征。     

水利水电工程专业学生创新能力的培养研究

知识经济的兴起,对人才素质提出了更高的要求,创新精神和创新能力已成为人才培养成败的重要标准。随着西部大开发的深入,水利水电专业人才日益成为凉山地区水利事业科学发展的主力军,他们的创新能力培养至关重要。本文结合现状实际分析了高校大学生创新能力欠缺的现状,阐述了创新能力培养的内涵,基于目前培养模式,充分结合本专业的特点,提出以课程教学为载体,并且依托学术科技活动,营造校园文化,将大学生创新能力的培养贯穿于校园文化建设的全过程,融知识传授、能力培养与科技创新为一体,培养具有社会竞争能力的创新人才。     

数字校园共享数据平台模型探讨

共享数据平台作为全校范围内全面完善而且规范的数据源。为数字化校园的应用系统建立了全面综合的数据源,为应用系统开发个人综合数字档案、学校决策分析档案提供支持。有效解决目前高校普遍存在的信息孤岛问题,逐步推进校园各项应用系统,形成完整全面的数字化校园体系。通过对共享数据平台建设在整个数字化校园建设中所起的作用和目的为着手点,对共享数据库平台的数据交换和共享的实现方案的作初步探讨。并简单介绍了数据交换集成平台的基本原理。     

井冈山精神与大学生社会主义核心价值体系教育

井冈山精神是我们党团结带领人民夺取革命、建设、改革胜利的强大精神力量,也是对大学生进行社会主义核心价值体系教育的宝贵资源。把井阏山精神的特质加以开发、提炼、科学地融入到高校社会主义核心价值体系教育中去,意义十分重大。     

基于VPN技术的跨区域校园网络方案的设计

将职业院校的跨地域分布特征结合VPN技术的分析研究,通过VPN技术的虚拟共享功能,针对构建高安全的职业院校校园网络资源共享提供解决措施,更进一步将网络数据的传输变得更加高效、安全、灵活以及经济,校区互联、移动办公等方面均可以在该技术的拓展应用基础上安全实现。     

勤于学习 重在实践 共筑大理大学梦

习近平总书记发表的一系列讲话为我们提供了行动指南,我们要深入贯彻习总书记的讲话和党的十八届三中全会精神,继续落实国家中长期教育规划纲要,以对口帮扶工作为落脚点,不断完善上下联动、各方协同创新的推进机制,实现大理大学梦。     

论高校思想政治教育文化环境的创建

高校思想政治教育文化环境的创建所面临的社会挑战,主要有文化独立性挑战、主导性挑战和方向性挑战。因此,高校思想政治教育文化环境的创建,必须坚持运行机制畅通化,必须体现可控性和导向性特征,必须体现社会功能和教育功能。     

基于IPv6的校园网络建设研究

近年来随着网络技术及互联网的高速发展,基于IPv4协议的传统互联网已经暴露出诸如IP地址用尽等问题,作为下一代网络核心协议的IPv6能够解决传统互联网的弊端.高校校园网建设一直是网络建设的前沿,需要对新一代网络核心协议及时部署和研究.IPv6协议的校园网建设必将伴随着两种协议共存、互连等的过渡问题,如何解决这些问题成为IPv6校园网部署的关键.     

Determination of phthalate esters in Chinese spirits using isotope dilution gas chromatography with tandem mass spectrometry

Phthalate esters are additives used in polyvinylchloride and are found as contaminants in many food products. An isotope dilution mass spectrometry technique has been developed for accurate analysis of 16 phthalate esters in Chinese spirits by adopting the 16 corresponding isotope‐labeled phthalate esters. The ethanol in the spirit sample was first removed by heating with a water bath at 100°C with a stream of nitrogen, after which the residue was extracted with n‐hexane twice. The phthalates collected were identified and quantified by gas chromatography with tandem mass spectrometry in multiple reaction monitoring mode. The spiking recoveries of 16 analytes ranged from 94.3 to 105.3% with relative standard deviation values of <6.5%. The detection limits for 16 analytes were <10.0 ng/g. The expanded relative uncertainties were from 3.0 to 14%. A survey was performed on Chinese spirits from the market. Six of the nine analyzed samples were contaminated by phthalates. Di‐n‐butyl phthalate and di‐2‐ethylhexyl phthalate showed higher detection frequency and concentrations. This isotope dilution gas chromatography with tandem mass spectrometry method is simple, rapid, accurate, and highly sensitive, which qualifies as a candidate reference method for the determination of phthalates in spirits.     

Evaluation of Monolithic Columns for Determination of Formaldehyde and Acetaldehyde in Sugar Cane Spirits by High-Performance Liquid Chromatography

Abstract

High-Performance Liquid Chromatography (HPLC) conditions are described for separation of 2,4-dinitrophenylhydrazone (2,4-DNPH) derivatives of carbonyl compounds in a 10 cm long C₁₈ reversed phase monolithic column. Using a linear gradient from 40 to 77% acetonitrile (acetonitrile-water system), the separation was achieved in about 10 min—a time significantly shorter than that obtained with a packed particles column. The method was applied for determination of formaldehyde and acetaldehyde in Brazilian sugar cane spirits. The linear dynamic range was between 30 and 600 µg L^?1, and the detection limits were 8 and 4 µg L^?1 for formaldehyde and acetaldehyde, respectively.