Purpose - The purpose of this paper is to describe the development of a contactless and batteryless loading sensor system that can measure the internal loading of an object structure through several ...covering materials for structural health monitoring.Design methodology approach - The paper proposed an architecture by which two radio frequency identification (RFID) tags are used in the system. It has been difficult to realize sensing by RFID because of the low power supply. To solve the power supply problem, a method using functional distribution of RFID tags of two kinds of RFID for communication and power supply was proposed. One RFID tag is specialized as a power supply for communication of strain loading information through A D conversion. Another is specialized to supply power for driving the strain gauges bridge circuit.Findings - By using developed system, the measurement of the structural internal loading with 20.0 mm depth was possible through covering materials such as concrete, but also plaster board, flexible boards, silicate calcium board, blockboard, and polystyrene with a resolution performance from 10 × 10−6 to 40 × 10−6.Originality value - A sensor system was developed using passive RFID, which enables measurement of load-deformation information inside a structural object. Moreover, the inexpensive wireless, batteryless devices used in this system require little maintenance, and applications for the user interface are also included in the developed system for uniform management of structural health monitoring. The developed system was evaluated in an actual situation using not only concrete but also other materials as covering materials on a structural object.
The commercial adoption of electro-optical printed circuit board (EOCB) technology will be accelerated by the development of industrial and conformity standards for high volume fabrication, connector ...assembly and waveguide measurement. In this paper, we introduce international standardisation activities surrounding EOCBs and report on industrial processes developed for the high volume fabrication of complex EOCBs with embedded multimode polymer waveguides including a first connector standard for polymer waveguide termination. We focus on solving a serious historic problem with the measurement of optical waveguide systems, namely the lack of harmonised measurement conditions for optical waveguides, which to this day gives rise to strong inconsistencies in the results of measurements by different parties on the same waveguide. We report on the development of a standard to ensure repeatable measurement of optical waveguides, whereby we demonstrate how the application of a measurement identification system and proposed reference measurement conditions can bring variation in measurement results to within 5%, thereby serving as the basis for a formal reliable optical waveguide measurement methodology.
An application of high-performance liquid chromatography-atmospheric pressure chemical ionization mass spectrometry for pesticides analysis is discussed. 21 types of organophosphorus and 8 types of ...N-methylcarbamate pesticides were selected for in this study.
We monitored both positive and negative ions to identify 21 organophosphorus pesticides. However, 8 N-methylcarbamate pesticides were detectable only with the positive ion measurement mode. Although the mass spectra obtained from this method showed a simpler pattern than those obtained with an electron impact method, those mass spectra were distinct enough to identify unknown peaks on the chromatogram. Because of the high specificity of this method, quick analysis could be performed with an extremely simple pre-treatment process. We suggest that this measurement method can be an extremely powerful means of pesticide analysis.
Many extensions of the Standard Model (SM) of particle physics predict the existence of charged Higgs bosons. In the Minimal Supersymmetric SM (MSSM) the charged Higgs boson's couplings to fermions ...are proportional to tan(beta) and the fermionic mass factors, and these could be substantial at large tan(beta) and/or for heavy fermions. For this reason one may be able to observe the effect of a charged Higgs boson at the LHC and at B-factories. In this work we perform a study of the charged Higgs boson couplings at the LHC and at B-factories for a large range of tan(beta). We further argue that, for an illustrative parameter space, by combining four possible measurements at the LHC and at B-factories one can perform universality tests of the charged Higgs boson couplings to quarks.