Technological Study of the Decoration on an Erard Harp from 1818     

Panagiotis Poulopoulos  Marisa Pamplona  Luise Richter  Elke Cwiertnia 《文物保护研究》2020,65(2):86-102

ABSTRACT

Historical pedal harps from the early nineteenth century are highly adorned objects, decorated with various techniques such as polychromy, gilding, decoupage, and gilt composition ornaments. Even though a large number of such instruments are kept in private and public collections, until now their decorative features have not been examined systematically. Moreover, little has been written about the motives behind the choice of various decorative techniques by harp makers. This article presents results from the investigation of a double-action harp made in 1818 by Erard, the leading manufacturer of harps in Regency London, focusing on the technological aspects of its decorative features. Various analytical methods, such as visual examination, microscopy, SEM-EDX, FTIR, and Py-GC-MS, were used to identify the inorganic and organic components in the coating of the harp and to analyse its stratigraphy. Inspection with ultraviolet light revealed details of the original layers and of later additions, while radiography made the internal structure as well as damaged areas and repairs visible. The outcome of this object-based examination was complemented by archival research on the Erard firm, providing new insight into Erard’s production and marketing strategies.  相似文献   

Body composition differences by age and playing standard in male rugby union and rugby league: A systematic review and meta-analysis     

Tom Geeson-Brown  Ben Jones  Kevin Till  Sarah Chantler  Kevin Deighton 《Journal of sports sciences》2020,38(19):2161-2176

ABSTRACT

This systematic review and meta-analysis aimed to determine differences in body compositionn between playing standard and age in male rugby union and rugby league athletes. The MOOSE (Meta-analysis of Observational Studies in Epidemiology) guidelines for design, implementation, and reporting were followed. Studies were required to be in male rugby union or league and have body composition as the primary or secondary outcome. Data was required to be presented separately for positional groups and body composition presented as whole-body. A systematic search was performed in PubMed, Cochrane Library, MEDLINE, SPORTDiscus, and CINHAHL via EBSCOhost. 57 studies were included for meta-analysis. Results highlighted significantly higher fat-free mass in senior elite than senior sub-elite or junior elite athletes for all RU and RL forwards. Small and non-significant differences were found in fat mass between rugby union playing standards and age categories. Rugby league senior elite forwards had less fat mass than junior elite forwards. Practitioners should prioritise training and nutritional strategies that maximise fat-free mass development, especially in junior elite cohorts.  相似文献   

出生性别比研究——以福建省为例     

王娜 《湖州职业技术学院学报》2011,9(3):49-51

利用全国人口普查福建省数据和福建省公开发布的有关资料数据,分析福建省出生性别比失衡现象的现状,在此基础上,从社会性别视角分析得出出生性别比失衡的根源为性别不平等。应从转变传统观念、充分发挥社会化主体的作用以及借鉴韩国有效的经验三个方面采取有效措施,才能更好地解决出生性别比问题。  相似文献   

布朗运动对油滴实验的影响     

欧海峰  王会永 《实验技术与管理》2007,24(7):38-40,54

以往，布朗运动对油滴实验产生的影响都只是作定性的描述。该文利用统计物理中布朗微粒方均位移的表达式，导出布朗运动引起的时间误差公式，推导了3种包含布朗运动的误差与不包含布朗运动的误差的比值公式，并作出相应的曲线图和曲面图进行直观的分析，得出的结论是：布朗运动对油滴实验的影响是很明显的。  相似文献   

学生贷款偿还负担的国际比较及我国的实证研究   总被引：15，自引：0，他引：15  

沈华  沈红  黄维 《比较教育研究》2004,25(10):38-43

各国在研究学生贷款的偿还问题时,对学生所承担债务负担的讨论是必不可少的.学生还款负担的轻重是衡量学生贷款方案是否科学合理的重要指标.本文对学生的贷款偿还负担进行国际比较,并对我国学生的还款负担作了实证分析;在阐述影响还款负担的主要因素的基础上,对我国国家助学贷款偿还模型的改进提出了一些合理化建议.  相似文献   

李斯特的艺术歌曲创作特征     

刘锋 《南阳师范学院学报》2007,6(4):71-73

李斯特的艺术歌曲很有特色，创作中开拓性的大胆革新手法和娴熟技巧，不但代表着李斯特的创作风格特点。也使之在浪漫主义的众多艺术歌曲中独树一帜。文章在论述影响李斯特艺术歌曲创作风格的因素前提下．对其典型艺术歌曲中的戏剧性的朗诵旋律、形象化的伴奏织体和丰富多彩的和声特点进行了分析、总结．为进一步深刻认识李斯特的创作思想和艺术特征提供了借鉴。  相似文献   

初中作文结尾写法之我见     

马占金 《天津教育》2021,(7):143-145

作文教学一直是初中语文教学的一个难点,也是学生和家长经常提到的一个难题,那么我们在实际教学当中,就需要注重培养学生作文写作的技能技巧,一步一个脚印地去培养学生的写作能力。一篇作文从开始构思到最后的修改文稿,这中间的过程非常复杂,其中作文结尾的写法很有讲究,一般情况下学生的作文在结尾的时候才能够揭示主题,表情达意,彰显作文的中心思想。因此在作文训练当中,培养学生作文结尾的写作方法技巧,也是作文教学的一个重点内容,让学生掌握基本的结尾写作技巧,逐步提高学生的写作能力。  相似文献   

小学作文教学中微课应用效果的调查研究     

张春花 《天津教育》2021,(2):150-151

微课作为新型的教学资源受到越来越多的重视。本文首先分析了微课应用的意义,然后在微课模式下以"作文改写"为例对小学作文教学进行设计,最后通过实际的调查,比较前后微课对教学效果的影响,结果表明在小学作文教学中应用微课可以改变学生的学习方式,提高学生的学习积极性。  相似文献   

小学语文高年级生活化作文教学策略     

黄明霞  李德军 《天津教育》2021,(9):145-146

在当今教育背景下,学生的素质教育已经成为教育重点方向。而小学是学生初步教育阶段,也是培养学生良好学习习惯的关键时期。因此,在开展小学语文高年级生活化作业教学过程中,教师应革新教学观念,将生活化内容合理引入,丰富写作教学课堂,拓展学生写作思路,培养学生全面发展能力,提升学生学习效果。  相似文献   

学情视角下的作文教学反思     

惠敏 《成才之路》2021,(11):104-105

作文是学生书面语言文字运用能力的综合体现,是语文教学的重点和难点。但目前,作文教学存在教学模式落后、与实际生活脱节以及学生创作积极性不高、不注重修改等问题。文章分析作文教学存在的问题,探究提升作文教学效率的策略,以提高学生的书面语言文字运用能力,促进学生全面发展。  相似文献