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Qiang Pei, Pengfei Qi, Zhicheng Xue, Jintu Zhong and Yao Zhang
The aim of this study was to further research the mechanical properties of epoxy thick-layer rubber isolation bearings, adopting orthogonal design and efficacy coefficient methods in order to optimize the geometric dimensions and material parameters of t...
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Francesco Esposito, Mario Argenziano, Diana Faiella and Elena Mele
This paper reports a study on the Intermediate Isolation System (IIS) applied to existing buildings. This kind of application is particularly suitable when a vertical addition is planned for buildings in seismic zones; in such a case, an isolation system...
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Cong Hung Nguyen, Cong Minh Ho and Kyoung Kwan Ahn
This research introduces an air spring vibration isolator system (ASVIS) based on a negative-stiffness structure (NSS) to improve the vehicle seat?s vibration isolation performance at low excitation frequencies. The main feature of the ASVIS consists of ...
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Pinar Usta
The earthquake performance of structures with seismic isolation is much better than that of fixed-base structures, and the application of seismic insulation ensures both structural integrity and the protection of the items present in the structures. The ...
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Peisong Wu and Jinping Ou
Isolation technology has been successfully applied in seismic migration. With increasing of seismic demand, seismic performance of isolation structures subjected to very-rare earthquakes need further improvement. However, the isolation layer generally la...
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Shouping Shang and Zhen Wang
Damping is one of the important issues related to isolated structures, including the newly proposed low-cost spring-asphalt isolation system. In this study, the damping properties of the system in terms of displacement dependence, frequency dependence an...
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Leilei Han, Haibin Wei and Fuyu Wang
There is a great potential application of the research findings in the respect of highway subgrade in seasonal frozen regions.
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Candice van Wyk, Francien Susanna Botha, Robert Vleggaar, Jacobus N Eloff
Pág. 66 - 70
In a random screening of the anti-Candida activity of more than 500 tree species, the acetone leaf extract of Ptaeroxylon obliquum (Thunb.) Radlk. (Sneezewood) had very good antifungal activity against Candida albicans. We isolated the compound...
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Junhua Wang, Yi Xu, Kaibin Liang, Qisheng Liu, Jiangui Li and Kaipei Liu
With the increase of urban population and electricity demand, in order to provide sufficient power to residents, distribution transformers are getting closer to residential buildings, and are even directly placed on the first floor or the basement of bui...
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Lucas Mazzon, Giada Frappa and Margherita Pauletta
A case study where a tuned mass damper (TMD) was installed at the top of a five-story reinforced concrete (RC) building is presented. The aim of the study was to investigate the effectiveness of the TMD in changing the structural behavior of medium-rise ...
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Debjani Roy Choudhury, Ramesh Kumar, Avantika Maurya, Dinesh P. Semwal, Ranbir S. Rathi, Raj K. Gautam, Ajaya K. Trivedi, Santosh K. Bishnoi, Sudhir P. Ahlawat, Kuldeep Singh, Nagendra K. Singh and Rakesh Singh
India is blessed with an abundance of diverse rice landraces in its traditional cultivated areas. Two marker systems (simple sequence repeats (SSR) and single nucleotide polymorphism (SNP)) were used to study a set of 298 rice landrace accessions collect...
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Fatima Amin, Rashid Saleem, Tayyab Shabbir, Sabih ur Rehman, Muhammad Bilal and M. Farhan Shafique
This research work proposes a compact four-port multiple-input multiple-output (MIMO) antenna that operates in the whole license free ultra-wideband (UWB) spectrum of 3.1?10.6 GHz. Spatial diversity has been introduced by arranging these antennas in clos...
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Katerina Bernardova Sykorova
TOPIC: The task of the 21st century is the implementation of manned flights in Earth?s orbit with the view to building orbital and planetary bases. This requires addressing the impacts on people and small social groups in terms of psychological, psychoso...
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Xiao Huang, Zhixiang Hu, Yunlin Liu and Liqing Nie
The seismic response characteristics of a lead-rubber-bearing(LRB) base-isolated structure under rare and very rare earthquakes were investigated. The acceleration, ductility coefficient, and shear strain of the LRB increase significantly under very rare...
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Rongguo Song, Xiaoxiao Chen, Shaoqiu Jiang, Zelong Hu, Tianye Liu, David G. Calatayud, Boyang Mao and Daping He
With the development of 5G, Internet of Things, and smart home technologies, miniaturized and compact multi-antenna systems and multiple-input multiple-output (MIMO) antenna arrays have attracted increasing attention. Reducing the coupling between antenn...
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Benoît O.L. Demars, Gerhard Wiegleb, David M. Harper, Udo Bröring, Holger Brux and Wolfgang Herr
The spatial structure and evolution of river networks offer tremendous opportunities to study the processes underlying metacommunity patterns in the wild. Here we explore several fundamental aspects of aquatic plant biogeography. How stable is plant comp...
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Guanjie Kong, Ziyu Wang and Youfa Yang
In view of the weak isolation and shock absorption effect of ordinary isolation bearings at present, a new track damping negative-stiffness device was designed based on the principle of negative stiffness. The principle of negative stiffness was applied ...
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Qing Lyu, Baijie Zhu, Wensheng Lu, Bo Fu, Liangkun Liu, Wei Qian, Ming Zhou and Zhenya Zhang
A five-story moment frame structural model with a base isolation system was tested on a shaking table. The isolation system comprised both linear natural rubber bearing (LNR) and nonlinear viscous dampers (NLVDs). Seven ground motions were employed: incl...
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F. Benykhlef,N. Boukli-Hacene
Pág. 9 - 14
An important issue in antenna array design is reduction of mutual coupling. In square microstrip antennas this reduction can be achieved by using electromagnetic band-gap (EBG) structures. They can help in the reduction of mutual coupling by using their ...
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Hyun-Su Kim
A structural analysis model to represent the dynamic behavior of building structure is required to develop a semi-active seismic response control system. Although the finite element method (FEM) is the most widely used method for seismic response analysi...
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