排序方式: 共有87条查询结果,搜索用时 109 毫秒
61.
藏族作家阿来的长篇小说《尘埃落定》 ,从一个大智若愚的“傻子”的角度 ,冷眼观察纷纷扰扰的“尘埃”世界 ,反映了作者阿来独特的历史感受和生命体验。从文学史的角度来看 ,小说中的“傻子”与鲁迅笔下的“狂人”是一种继承与深化的关系 ,两者都是 2 0世纪中国人现代化心路历程的曲折表现。《尘埃落定》的成功 ,是当代中国文坛又一次重归传统的努力和尝试 相似文献
62.
Benjamin Bartl Ludmila Mašková Hana Paulusová Jiří Smolík Lenka Bartlová Petr Vodička 《文物保护研究》2016,61(4):203-208
This study focuses on the changes in properties of cellulose-based paper, which can take place as a consequence of its contamination by dust particles. The PM1 (fine) and PM10 (coarse) fractions of the dust particles from archival repositories were collected on cellulose filters Whatman 41, polytetrafluorethylene, and quartz filters. The latter two types of samples were subsequently analyzed gravimetrically, with ion chromatography, PIXE, and the thermal–optical transmission method, giving mass, ionic, elemental carbon, and organic carbon concentrations. After artificial aging, the viscosity-average degree of polymerization of cellulose (DPv) was measured. It was confirmed that cellulose-based paper can undergo substantial changes when contaminated by dust particles and artificially aged. The decrease of the DPv of cellulose showed a negative correlation with the deposited mass of sulfate ions in the dust particles. Considering the particle size fraction, the results suggest the decisive importance of the fine (PM1) particles. The results provide better understanding of how particulate matter contributes to the chemical degradation of cellulose-based paper. Such knowledge is of importance when considering appropriate conservation measures in archives, libraries, and galleries. 相似文献
63.
Pascal Querner 《文物保护研究》2016,61(1):111-117
The webbing clothes moth Tineola bisselliella (Hummel, 1823) is one of the most common museum pests and can be found all over the world. The larvae damages objects made of feather, wool, fur, and other keratinaceous materials. Pheromone traps are important tools in integrated pest management, which allow the detection of infestations and evaluation of their extent. Organic-rich dust (detritus) or other materials of animal origin, such as dead birds, can be an alternative food source for the moths. This paper analyzes monitoring data collected with pheromone traps from six different museums in Vienna and Berlin and tries to differentiate between moths resulting from infested objects or moths coming from other food sources, such as organic-rich dust. Annual totals of moths trapped and catch rate (moths per trap) are important guides for selecting appropriate remedial measures. Long-term data (over six years) enabled us to interpret monitoring results and differentiate between active infestation of objects and cleaning or housekeeping problems. However, detailed knowledge of the site and buildings, availability of high-quality food for the larvae, and lack of regular cleaning are also important factors to consider when interpreting the data. 相似文献
64.
《尘埃落定》是一部反映嘉绒部族历史生活的小说。阿来在《尘埃落定》中对宗教作用的解构和再现,不仅反映了嘉绒部族的历史生活,也间接地暗示了宗教在嘉绒部族中的特殊作用。由于特殊的地域和文化影响,宗教在这一地区与人们的生活息息相关,人们一方面渴望通过宗教获得精神独立,另一方面又慑于土司的强权,找不到自我解放之途。 相似文献
65.
建筑陶瓷工业几乎在其生产的全过程中都会产生粉尘,且在这些企业的作业环境中粉尘浓度存在严重的超标现象,粉尘严重危害着工厂作业人员的身体健康,因此,工人应当清楚意识到粉尘的危害,工厂应当改进工艺流程和设备,改善作业环境,这是当前急需解决的一个问题。运用LEC评价的方法评价粉尘的危害,可以比较客观得到建筑陶瓷工业的粉尘危害,对作业环境的改善有比较重要的参考价值。 相似文献
66.
基于网络的气象科学研究性学习的实施与成效 总被引:1,自引:0,他引:1
"数字化微型气象站"是基于手持技术的气象数据采集系统,借助网络进行在线数据共享与协作学习。该研究设计并实施基于"数字化微型气象站"网络探究平台的研究性学习,并通过观察与问卷调查探讨基于网络的气象研究性学习的成效。 相似文献
67.
王春林 《海南师范大学学报(社会科学版)》2010,23(4):30-34
艾伟的《风和日丽》以共和国的60年历史变迁为基本写作背景,通过若干主要人物曲折命运的充分展示,对人物复杂深邃的人性世界进行了深入的探究挖掘,而且还甚为成功地刻画塑造出了若干生动丰满、别具人性深度的人物形象。也非常成功地传达出了某种只可意会难以言传的命运感。 相似文献
68.
应用WRF-chem模式模拟京津冀地区气溶胶污染对夏季气象条件的影响 总被引:4,自引:0,他引:4
本文利用WRF-chem空气质量模式,模拟研究2006年夏季代表月份7月的气溶胶污染对京津冀地区的温度、风速、PBL高度以及降水量等的影响。模拟结果表明,在气溶胶的直接和间接气候效应的作用下京津冀地区2006年夏季区域平均温度下降了0.19℃、风速升高了0.089m/s、PBL高度下降了34.42m、降水量增加了0.069mm。研究发现,对于污染较重的地区地面10m风速的下降程度显著,而地面2m温度和PBL高度则明显的下降,对于污染较轻的地区地面2m温度和PBL高度有明显的下降,地面10m风速则有明显的上升。此外,由于地形的作用,北京市平原地区的温度和PBL高度的下降量低于山地地区,而风速则相反。 相似文献
69.
姜雄 《辽宁科技学院学报》2009,11(3):41-42
文章从物理学的流体力学出发,运用相关的因素进行分析,建立沙尘暴颗粒扩散的数学模型,分析了沙尘颗粒扩散的内在因素,并且试图寻找减少沙尘暴危害的方法。 相似文献
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