GONAF – the borehole Geophysical Observatory at the North Anatolian Fault in the eastern Sea of Marmara

The Marmara section of the North Anatolian Fault Zone (NAFZ) runs under water and is located less than 20 km from the 15-million-person population center of Istanbul in its eastern portion. Based on historical seismicity data, recurrence times forecast an impending magnitude M>7 earthquake for this region. The permanent GONAF (Geophysical Observatory at the North Anatolian Fault) has been installed around this section to help capture the seismic and strain activity preceding, during, and after such an anticipated event

Comparison of the properties of knitted fabrics produced by conventional and compact ring-spun yarns

The new compact yarn spinning system appears to eliminate the spinning triangle problem in the conventional ring spinning process, and is claimed to bring many advantages of yarn quality. However the benefits of this new concept are still to be investigated extensively. In this research work, we produced plain knitted fabrics by using conventional ring-spun and ring-compact yarns. These fabrics were knitted and dyed under identical conditions. We then tested these fabrics for their appearance after different washing cycles, their pilling behaviour their colour differences and bursting strengths. The change in the surface of the fabrics after washing in different cycles shows that fabrics of compact yarns maintain their appearance, while others seriously deteriorate. Pilling test results show that the pilling tendency of fabrics of compact ring yarns is much better compared to those of conventional yarns, as expected. On the other hand, test results regarding colour difference indicate that there are significant differences, as the fabrics of compact ring yarns have darker shades. Finally, fabrics of compact ring yarn have generally higher bursting strength, but the differences become less significant as the loop lengths increase in the fabrics

Smart E-textile: Resistance properties of conductive knitted fabric – Single pique

2016-2017 > Academic research: refereed > Publication in refereed journalbcrcAccepted ManuscriptRGCPublishe

EPOS-S: Integrated access to seismological waveforms

The main challenges of the EPOS TCS Seismology are to improve and to extend existing services to access earthquake waveforms (ORFEUS), parameters (EMSC) and hazard data and products (EFEHR), and producing a single framework that is technically integrated within the EPOS architecture. Technical developments in the services for seismological waveforms and associated data, including the compilation of station metadata and installing common data archival and sharing policies are within ORFEUS and its Working Groups. The focus is on 1) the development of the next generation software architecture for the European Integrated (seismological) Data Archive EIDA based on standardized webservices, the implementation of a data quality service and the realisation of a mediator service; 2) the development of EIDA-compliant services for strong motion data and acceleration data and the extension of the station metadata model; 3) the integration of data from mobile networks and OBS waveforms into EIDA by implementing mechanisms for coordination of transnational access and multinational experiments at available pools of OBS and mobile seismic stations; 4) achieve close integration with other EPOS TCS and the ICS with regard to interoperability and common use of tools & services, common and coordinated data models and metadata formats, and common computational platforms and IT solution implementations. This presentation will present the status of and current developments towards the above objectivesPeer Reviewe

Electrical, electromagnetic shielding, and some physical properties of hybrid yarn-based knitted fabrics

Recently, increasing number of studies are performed on protective fabrics containing metal wires for electromagnetic shielding purposes. In the present paper, the hybrid fabrics in plain and rib structures were knitted by using single and double ply hybrid yarns obtained by acrylic (PAC) yarns plied with stainless steel wires having two different diameters. The physical properties including conductivity, air permeability, pilling, and abrasion resistance as well as electromagnetic shielding effectiveness (EMSE) were measured. The variations in EMSE as well as reflection, absorption, and transmission and in other physical properties of knitted hybrid fabrics were investigated considering wire content and weave structure. It was seen that an increase in the wire content significantly increased the conductivity. Rib fabrics exhibited better EMSE values as compared with plain fabrics. Fabrics using two-folded yarns exhibited better EMSE values. Fabrics using thinner wire exhibited higher EMSE values. The highest EMSE value was obtained for rib-knitted fabric with 35 micrometer (m) stainless steel wire