Investigation of an Egyptian Mummy board by Using Clinical Multi-slice Computed Tomography     

Sveva Longo  Enricomaria Mormina  Francesca Granata  Domenico Mallamace  Marcello Longo  Silvia Capuani 《文物保护研究》2018,63(7):383-390

A modern approach to the diagnosis of artistic heritage makes use of non-destructive techniques which avoid damage to artworks or signs of interaction with the analytical technique used. For this reason, today, the employment of X-rays to study artistic heritage is quite widespread. Computed tomography (CT) Imaging was first used as specialized medical diagnostic tool in the early 1970s. Today, CT scanners have become more common, and non-destructive three-dimensional imaging has found an increasing number of uses in different areas such as materials research, geology, archaeology, and museum conservation. In this work, a new generation of clinical CT (based on the Dual Energy and multi-slice acquisition principle) is used to investigate an Egyptian wooden mummy board with a total acquisition time of 93.23 seconds and a voxel size of 0.078?×?0.078?×?1.5?mm. The use of two distinct techniques of image post-processing, the two-dimensional multi-planar reconstruction (MPR) and the three-dimensional volume rendering technique (VRT) allowed us to: evaluate the state of conservation of the mummy board, determine how the wooden object was implemented, recognize a nineteenth-century intervention of consolidation, and advance the hypothesis that the wooden planks were reused. In particular, we highlight the use of the cardiovascular and pulmonary filter with VRT reconstruction, which allows a virtual elimination of different parts of the mummy board to investigate those areas otherwise accessible only by removing parts of the board and thus damaging the work.  相似文献   

木屑制取草酸新法     

龙德清 《郧阳师范高等专科学校学报》2002,22(6):33-35

通过硫酸水解,将木屑中的纤维素转化为葡萄糖,在催化剂作用下,用硝酸将其氧化,制取了草酸.经研究,本法最佳配料比及工艺条件为:干木屑∶硫酸(50%)∶硝酸(65%)∶催化剂=30g∶30mL∶4mL∶0.03g,浸泡水解时间为4h以上,反应时间5h以上,反应温度控制在65～70℃.所得草酸纯度为97.5%,收率达50%.对产品理化数据指标及工艺环保措施进行了分析.  相似文献   

论科学技术领域里的两次革命对书法艺术发展之影响     

刘清扬 《四川师范学院学报》2007,(2):100-104

在中国书法艺术的发展进程中，科学技术领域里的两次重大革命对其产生了积极而深远的影响，一是印刷术的发明使用，再就是微型计算机的普及与运用。新的楷书艺术研究成果促进了印刷术的发明，印刷术的发明使用又极大地刺激了楷书艺术与草书艺术的向前发展、推动了书学理论研究的走向深入；微型计算机的普及运用，使书法艺术从实用的羁绊中彻底解脱出来，使书法学科完全独立于民族艺术之林，成为更纯粹的民族艺术形式之一。  相似文献   

《庄子》二题     

曾祥旭 《南阳师范学院学报》2004,3(5):114-116

庄子的“吾丧我”涵盖工夫与本体两个层面,其含义是“唯丧我才能见道”,又是“见道后的自然解脱”。庄子“大木”的形象是丑的,但“大木”意象是美的,“大木”的本质是庄子对个体生死意义的独到领悟,又是一种超然而可求的人生态度。  相似文献   

First record of <Emphasis Type="Italic">Bursaphelenchus rainulfi</Emphasis> on pine trees from eastern China and its phylogenetic relationship with intro-genus species   总被引：1，自引：0，他引：1  

Jiang LQ  Li XQ  Zheng JW 《Journal of Zhejiang University. Science. B》2007,8(5):345-351

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新绛木版年画的画面特征     

张文菊 《运城学院学报》2011,29(1):106-109

新绛木版年画以其独特的艺术魅力成为晋南地区民间艺术的奇葩,其兴盛与古绛州悠久的历史、重要的地理位置、丰富的物产和大量的民间画匠有密切关系。新绛木版年画题材丰富,其中以戏曲年画独树一帜,体现出浪漫主义情怀。新绛木版年画构图饱满,线条与色彩极具装饰性,并富于实用性,具有重要的文化艺术价值,影响深远。  相似文献   

经济发展、林产品贸易对木材消耗的影响研究     

田明华  万莉 《资源科学》2015,37(3):522-533

随着全球生态危机加剧,森林的生态环境功能日益突出,全球森林数量持续减少、质量不断下降,使涉嫌消耗大量木材的经济发展、林产品贸易备受争议。本文以木材消耗作为森林资源的压力指标,分析了影响木材消耗的关键因素,以世界具有代表性的61个国家2010年的相关截面数据,运用多元线性回归模型,进行了实证分析,结果表明:经济发展对木材消耗的影响为正,人均木材消耗指标与经济发展指标呈现一种向右上方倾斜的N形关系;林产品出口贸易与木材消耗的关系为负向,有利于减少人均木材消耗;林产品进口贸易与木材消耗的关系为正向,但相较于使用本国木材来说更有利于减少人均木材消耗;木材产量与木材消耗同方向变化,是影响人均木材消耗的最为显著的因素;林产品贸易规模、森林资源的丰富程度以及技术进步因素的影响不显著。据此,本文从世界和中国林业发展的角度提出了林产品贸易自由化、保持木材供应适度偏紧等相关建议。  相似文献   

水分对木质工字梁翼缘/腹板接口性能的影响     

李军伟  陈竹 《深圳职业技术学院学报》2015,(1)

木质工字梁（Wood I-Beam,简称：IB）在使用过程中将不可避免地遇到潮湿环境的影响,研究水分对翼缘/腹板接口性能的影响,对确保IB接口最佳胶合状态以及最终产品尺寸稳定性至关重要．研究结果表明：IB的综合性纤维饱和点只有25%左右;含水率从8.9%提高到25%的接口的承压能力下降了47.2%,含水率从25%提高到53%的接口的承压能力仅下降了0.6%;水分对IB翼缘和腹板尺寸变化的影响是水分影响接口承载能力的间接因素;吸湿后接口的承载能力并不能恢复到吸湿前的初始水平;解吸至8.9%含水率的IB接口的承载能力比吸湿前同等含水率的IB接口低了17.8%．  相似文献   

Investigation of Cheb relief intarsia and the study of the technological process of its production by micro computed tomography     

《Journal of Cultural Heritage》2014,15(6):609-613

Cheb relief intarsia is one of the most significant artistic techniques used in the early and middle baroque furniture manufacturing. The origin of this exceptional technique is closely tied to the city of Cheb and in a wider perspective, similarly to rondocubism or cubism applied in architecture; it is a branch of decorative arts distinctive just only for Czech lands. Here we report on the findings made on the basis of non-destructive X-ray micro computed tomography (μCT) analysis for determination of the condition and characteristics of the inner structures of an original plate of Cheb relief intarsia. The results of this analysis not only helped to clarify the manufacturing process itself, but also contributed to aim the future actions of the effective intarsia conservation in regard to the spreading internal cracks and defects in the plate discovered by μCT analysis.  相似文献   

浅析苏州红木雕在中国木雕界的杰出地位     

林幸民 《科教文汇》2011,(25):150-150,172

本文基于传统手工艺木雕的研究,展示了丰富多彩的木雕历史、工艺介绍。今天远离了手工艺的我们,在审视和研究手工艺时,对它的评价是不高的,可喜的是苏州木雕并没有被人们所遗忘,并没有被历史的尘沙所掩埋。越来越多的人开始关注它,因为这是历史留下来的瑰宝,是值得后代人去继承和探讨的。  相似文献