Experimental Study on Self-Centering Concrete Wall with Distributed Friction Devices

A self-centering concrete wall with distributed friction devices is proposed to achieve seismic resilient building structures. Unbonded post-tensioned tendons, running vertically through wall panels, provide a restoring force that pulls the structure back toward its undeformed plumb position after earthquake. Two steel jackets are installed at wall toes to prevent concrete spalling and crushing. Friction devices are distributed between the wall and its adjacent gravity columns to achieve controllable energy dissipation, and these devices are readily replaceable. Desirable self-centering and energy dissipation capacities were observed in low-cyclic loading tests, and influences of various parameters on the hysteretic behavior were investigated.     

Performing Guangzhou and Guangzhou Ren: analysing popular music in Guangzhou

The main purpose of this article is to examine the ways in which popular music in Guangzhou is implicated in the performance of places and identities, and how it is located in Guangzhou. Drawing on the qualitative methods of participant observation and interviews, this research analyses the popular music and musical performances in Guangzhou through three spatial dimensions: the place of Guangzhou, the performance venues and the human bodies. The findings of this research suggest that popular music in Guangzhou sets up the emotional communications and engenders different spaces for the participants to negotiate their embodied identities; popular music and musical performances make the connections between three spatial scales—the place of Guangzhou, the performance venues, and the human body—through its capacity of social mediation and the musical performances articulate the power relations between local residents, the local and national authorities, and the global. This research can be read as a contribution towards the wider literatures on musical performance and the exploration of doing/making place and place-based identity through popular music.     

Numerical simulation of mylonitization and structural controls on fluid flow and mineralization of the Hetai gold deposit,west Guangdong,China

The Hetai gold deposit (HGD) is a typical altered mylonite type gold mine in a ductile shear zone in western Guangdong, China. Geomechanical simulations of the HGD were carried out in this paper to examine the importance of the dilation‐driven fluid circulation in gold mineralization. The results show that three evenly‐spaced NNE shear zones of enhanced dilation are produced in the study area. The calculated principal compressive stress in the X direction in these zones ranges between ?420 and ?650 MPa, in line with estimates of ore‐forming pressure (fluid pressure). Ore forming fluid is focused into these features, as observed in the field. The calculated differential stress decreases from 275~350 to 148~225 MPa during the formation of mylonite zones. These, together with geological structural analysis and fluid pressure measurements, indicate that the mylonitization zone can provide a place of fluid focusing and a favorable environment for gold mineralization.     

Biomass Spectrometry Identification of the Fibre Material in the Pall Imprint Excavated from Grave M1, Peng‐state Cemetery,Shanxi, China

In order to identify the fibre material of the pall imprint excavated from the Peng‐state cemetery in Shanxi, biomass spectrometry was applied to determine the amino acid sequences of the residual protein extracted from the soil underneath the imprint. The sequences were searched against a standard protein sequence database. A well‐preserved silk pall sample from the Warring States Period was used as a comparative template. The protein extracted is identified as silk fibroin (Bombyx mori). This finding indicates that the extremely degraded pall was made of silk and that the deceased in the Peng‐state cemetery enjoyed high social status. In this way, a novel methodology, which is very promising in uncovering the origin of silk, could be initiated.     

Examining the Role of Geographical Proximity in a Cluster's Transformation Process: The Case of Taiwan's Machine Tool Industry

This paper examines the relationship between geographical proximity and a cluster's sustained dynamism with a specific focus on the role of geographical proximity in the transformation of cluster firms' production and learning organizations. Using Taiwan's machine tool cluster as an empirical case, this article studies the nature of various intra- and extra-cluster technological networks established by local firms to tackle the cluster's developmental inertia. In contrast to most recent studies that seem to consider geographical proximity less relevant to the sustained prosperity of incumbent clusters, our case study finds that geographical proximity continues to be a critical factor underlying agglomerated firms' capacity to maintain and explore diverse capabilities within and outside the clusters. On the one hand, co-location allows these firms and their coupled actors to experiment with a range of technological networks and organizational forms in the face of the changing competitive conditions. On the other hand, while the spatial boundaries of important technological networks in the cluster are not necessarily confined to the locality, we find that geographical proximity among networked members is the key to the emergence of and better governing over those crucial extra-cluster networks. In addition to responding to the call for empirical work exploring the relationships between geographical proximity and non-geographical proximity in knowledge creation and exchange, this article contributes to the cluster literature by providing evidence on the evolution of clusters and whether the advantages associated with geographical clustering persist over time.     

湖州铁佛寺铁观音病害调查与分析

湖州铁佛寺内留存的宋代铁观音目前出现严重的病害,主要表现为粉化、脱落、鼓泡、锈蚀等症状,对其保护已刻不容缓。为此,通过X-荧光(XRF)、金相、红外(FTIR)、拉曼(LRS)、X衍射(XRD)对其进行分析。结果表明,铁观音基体组成为铁素体基灰铸铁,基体表面化学组成大约是:铁96.85%,硅0.47%,铜0.45%,硫0.096%,余量约3%应为碳;表层涂层为醇酸树脂,腻子为石膏,锈蚀物的主要成分主要为α,β和γ型的FeOOH。其病害原因为铁观音基体内部组成、大气环境、有害气体以及表面涂层老化对其腐蚀的影响。研究结果可为以后保护方案的制定提供参考。     

Tree-ring based temperature reconstruction for the west Qinling Mountains (China): linkages to the High Asia,solar activity and Pacific-Atlantic Ocean

We developed a Faxon fir (Abies faxoniana) tree-ring width chronology at the timberline in the western Qinling Mountains, China. Herein February–July mean temperature was reconstructed for Zhouqu in the western Qinling Mountains back to AD 1650 based on the standard chronology. The climate/tree-growth model accounts for 43.5% of the instrumental temperature variance during the period 1972–2006. Spatial correlation analyses with the gridded temperature data shows that the temperature reconstruction captures regional climatic variations over central and southeast China, and strong teleconnections with the nearby High Asia. There is a good agreement with cold and warm periods previously estimated from tree-rings in Nepal, India and southwest China. The temperature re-construction indicates that there was pronounced cooling in Zhouqu during the Maunder Minimum (late 1600s to early 1700s). The cold period (1813–1827) of the temperature reconstruction coincide with the volcanic eruptions. Significant spectral peaks are found at 56.9, 22.3, 11.4, 2.9, 2.8, 2.6, 2.2 and 2.0 years. The spatial correlation patterns between our temperature reconstruction and SSTs of the Atlantic and Pacific Oceans suggest a connection between regional temperature variations and the atmospheric circulations. It is thus revealed that the chronology has enough potential to reconstruct the climatic variability further into the past.     

关于"盘庚迁殷"问题的一点想法

"盘庚迁殷"的第一个地点应是安阳洹水北岸的洹北商城.这里发现有相当于盘庚、小辛、小乙时代的殷墟文化第一期的宫殿建筑基址、宫城墙、外城内外基槽及居民点等遗存.其后,由于洹北商城的宫殿建筑毁于火灾,商王室即迁洹南小屯之殷都.这里有殷墟一期的祭祀场所和随葬青铜器的贵族墓等遗存,透露出小屯是盘庚迁殷的第二个地点.     

YANGJEN-THE FIRST TIBETAN FEMALE LAWYER

As the first group of Tibetan lawyers in Tibet and actually the first female lawyer,the first lawyer to open a collective law firm in Tibet and the first individual to open a private law consultation firm,Yangjen holds manyfirstin Tibetan law.