Cleumar Moreira, Arlindo Barreto Neto, L. C. Oliveira, Antonio Marcus Lima, F. C. C. Loureiro, Helmut Neff
A low-cost autosampler for surface plasmon resonance (SPR) biosensor platforms has been designed and applied for the determination of the mutual diffusion coefficient of ethanol in water. Its configuration is simple and based on a motorized carousel-type set-up. The sample loading process comprises a Z-drive, along with a syringe type analyte extractor. Furthermore, a commercial peristaltic pump is used to circulate the analyte through the microfluidic cell of the biosensor. A microcontroller connected to a PC provides control of the set-up. Theoretical aspects and experimental results are...
XIX IMEKO World Congress
· TC13
· 2009
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Tohru Iuchi, Atsushi Gogami
The emissivity behaviour of a silicon wafer under various conditions was theoretically and experimentally investigated. As a result, the quantitative relationship between the ratio of p-polarized radiance to s-polarized one, and polarized emissivities was obtained irrespective of the emissivity change of wafers due to the oxide film thickness under the wide variations of resistivity. Based on the result, we propose a new radiation thermometry method that can measure both the temperature and the spectral polarized emissivity of the silicon wafer, and estimate the uncertainty of the...
XIX IMEKO World Congress
· TC12
· 2009
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Han-Wook Song, Yon-Kyu Park, Sam Yong Woo
The constitutional diagnosis using human skins is classified to palpation in oriental medicines. From Sasang constitutional medicine which is one of oriental medicines, human could be divided by the properties of their skins such as texture, roughness, hardness and elasticity. Especially, the friction coefficient and roughness of skins have big discrimination ability in the classification of human constitutions But this classification has been dependent on the qualitative judgment of an oriental doctor. In this paper, we present the quantitative measurement method, equipment of the friction...
XIX IMEKO World Congress
· TC3
· 2009
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Sung Hun Lee, Han Young Ryu, Yong Pyong Kim, H. Suh
We propose ultra stable coherent laser sources based on optical injection locked single mode of the femtosecond fiber laser comb. The source is discretely tunable coherent optical sources by two DFB lasers, which are injection-locked to a respective single mode of the fiber laser comb with the frequency difference of 500 MHz, that is exactly twice of the comb repetition frequency.
XIX IMEKO World Congress
· TC2
· 2009
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Han Young Ryu, Sung Hun Lee, Tae Bong Eom, H. Suh
We demonstrate an ultra-stable visible laser source that can be generated from injection locked infrared DFB based on optical comb. The optical comb was used as injection source and locked to an acetylene stabilization laser as a reference source of optical communication region. The DFB laser was selectively injection locked from only one among the comb mode with 25 GHz spacing. The ultra-stable visible source can be generated after wavelength conversion (2 nd harmonic) of injection locked DFB laser in the PPLN (periodically poled LiNbO 3 ) crystal. This source has a frequency stability of...
XIX IMEKO World Congress
· TC2
· 2009
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Rob Haines, Michael Bair
The FPG8601 has become an important reference for many primary measurement laboratories in a pressure range from approximately 1 Pa to 15 kPa in both gauge and absolute measurement modes. The FPG8601 measurement range spans the gap between the traditional measurement regimes of "pressure" and "'vacuum", a range where other primary pressure standards either do not exist or do not have uncertainties sufficient to support the FPG8601 traceability. The limitations of available primary standards create a challenge for FPG8601 users needing to define traceability in this range. This paper suggests...
XIX IMEKO World Congress
· TC16
· 2009
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Marcus Tadeu Pinheiro Silva, Flávio Henrique Vasconcelos, Guilherme Augusto Silva Pereira
This paper presents a new method for locomotor activity (LA) measurement in small laboratory animals. A method was developed in order to add LA measurement capability in biotelemetry systems in which implant powering and communication is based on inductive coupling. That enhacement is done without the need of additional resources in the implanted side. After discussing the mathematical formulation, an example is presented for which are obtained the most adequate parameters for LA measurement in a typical system of biotelemetry in small rodents. Limitations and advantages of the method...
XIX IMEKO World Congress
· TC13
· 2009
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Torben Licht, Sven Erik Salbøl
Primary vibration calibration by laser interferometry using quadrature outputs has been used for the last 10-15 years. The ISO 16063-11 was published in 1999 and this has increased the interest further. With new compact laser interferometers the difficulties of optical alignment and adjustment has been practically eliminated and dedicated software has made the process automatic, permitting to gather much more data. In most cases it is applied to reference transducers, either single-ended or meant for back-to-back calibration. However the problem that the laser beam not always can be directed...
XIX IMEKO World Congress
· TC22
· 2009
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Gustavo Ripper, Dimas Teixeira, Cauê Ferreira, Ronaldo Dias
This paper presents a new system that was developed in the Vibration Laboratory at INMETRO for the calibration of vibration transducers and measuring equipments at low frequencies. The system is based on a long-stroke air bearing shaker and on a data acquisition board. Optionally, a piezoresistive accelerometer or a laser vibrometer can be used as reference transducers. Fully automated calibrations of vibration transducers are carried out in compliance with the international standard ISO 16063-21. Some experimental results obtained with this system will be presented herein.
XIX IMEKO World Congress
· TC22
· 2009
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Enilson José Costa, Raimundo C. S. Freire, João Bosco Silva, Carlos Magno Cursino, Cláudio Oliveira, Bruno A. M. Pereira, Roniere F. L. Silva
In this work they were developed a microcontrolled system devoted to the newborn incubator, in order to check the conditions of the environment provided to the premature newborns, a humidity control system and software that carries out the reading of the sensors. Two microprocessed, similar newborn incubator were used, for the realization of the measurements, being that one of the newborn incubator used distilled water and other one was valued without water. The measures were collected to each 2 minutes during 96 hours. The relative humidity inside newborn incubator without water and with...
XIX IMEKO World Congress
· TC13
· 2009
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