Optically stimulated luminescence (OSL) dating was applied to sediment samples in order to provide age constraints on the
palaeo-earthquake events that are recorded in a trench on the Lingwu fault near Yinchuan on the northeastern margin of the
Tibetan Plateau, China. Combining seventeen OSL ages with field observations in the trench shows that at least four events
took place at this specific site, and that this fault has been active over the past 200 ka. 相似文献
The paper applies Bayesian statistical modelling to radiocarbon dates obtained for a stratigraphic sequence comprising occupation features and superimposed burials from the Late Mesolithic (c.7400–6200 cal BC) to the Mesolithic–Neolithic transition (c.6200–5900 cal BC), from Vlasac in the Danube Gorges region of the north‐central Balkans. This sequence, investigated in the course of excavations at the site in 2006–9, yielded stratigraphic evidence of the transformation of local forager populations as a result of contact with Neolithic communities. Our paper provides a reliable chronological framework for changes from Late Mesolithic burial rites to new, Neolithic types of ornamental beads at the top of the sequence. The use of the same burial location and continuities in burial rites over a considerable period of time raise significant questions about the role of tradition and the potential for enduring practices in prehistoric societies. 相似文献
Previous studies on modern historic buildings protection have been mainly conducted from the view of building history, culture and aesthetic, but rarely focus on the green building technology and energy-saving. With the increasingly serious crises of environment and energy, it is valuable to research how to carry out ecological protection to effectively reduce energy consumption in modern buildings while ensuring the authenticity and readability of building heritage information.
This article describes a new technical scheme to apply Trombe wall technology for wall conservation in modern historic buildings. The feasibility, key construction technologies and operating conditions in different seasons were demonstrated by an actual case in Beijing. Key findings show that the technical scheme not only protects the skin texture of the wall but also makes full use of passive solar energy. Energy consumption simulation results show that saving energy in winter is significant. Compared with the original building, the total energy consumption of the building that adopted the technical scheme was reduced by 10.77%, the heating energy consumption was reduced by 21.86%, and the cooling energy consumption was reduced by 1.02%. The research findings provide new inspiration and reference for studies on the protection of modern historic buildings, and serve as a technical reference for architects. 相似文献
ABSTRACTAs a world-renowned heritage site, the Ming Great Wall in Qinghai Province, is an example of an earthen site that is seriously threatened by a series of deterioration. Its damage assessment is the precondition for further protection planning and implementation, but related research was found to be scant. To fill this gap, we explore to study its damage assessment by applying Fuzzy-AHP and AHP-TOPSIS to determine the damage assessment levels for 18 earthen sites selected from Qinghai Province, combined with their occurrence environment, engineering properties of rammed earth, deterioration characteristics, and building technologies. After obtaining and comparing results, the AHP-TOPSIS is indicated to be much closer to the real damage conditions. Therefore, this method is proved to be more suitable for the damage assessment of earthen sites in Qinghai Province. This study also holds the potential application of the AHP-TOPSIS in the damage assessment for other earthen sites in Northwest China. 相似文献