IMEKO Event Proceedings Search

   

Page 881 of 977 Results 8801 - 8810 of 9762

Beata Palczynska, Ludwik Spiralski, Jacek Wyszkowski
ASSESSEMENT OF LOW FREQUENCY ELECTROMAGNETIC FIELD INTENSITIES ON BOARD OF SHIPS

The methodology of measurements of low frequency electromagnetic field intensity, existing on the seagoing ships, is presented. The selected results of the tests taken during the ship’s stay in the port and at sea, are performed. In some chosen places, the level of electric and magnetic constituents of the field intensity was assessed. The sources of strong magnetic field in the low frequency range have been located, its spectrum course was of 1/f type. Due to the analysis of measurements results, the level of electromagnetic field intensity was evaluated, in reference to standards and recommendations of marine classification societies. The analysis of the emitted disturbances level was carried out, bearing in mind the crew protection against the excessive emission of electromagnetic field.

A.F. Clain, M.J.C.S. Bragança, A.M.G.F. Azeredo, L. Tauhata, C.C.S Conceição, E.M.O Bernardes
PREPARATION OF A SOIL REFERENCE MATERIAL WITH HIGH THORIUM CONCENTRATION FOR DETERMINATION OF RADIONUCLIDES FROM THORIUM AND URANIUM NATURAL SERIES

It was prepared a reference material from a soil with high thorium concentration from a region with high natural radioactivity. Performed tests using gamma spectrometry and statistical programs showed that the prepared material was homogeneous and enough stable to be used as an in-house reference material in intercomparison exercises.

Yusaku Fujii, Shigeru Kumakura, Noriaki Yoshiura, Naoya Ohta, Hiroaki Otsuka
RESIDENTIAL DISTRICT SECURITY USING HOME COMPUTERS

We are promoting a novel concept "the e-JIKEI Network": a community will have a strong ability to prevent crime only if some residents keep watch on what happens around their houses with the aid of their own home computers, commercially available cheap cameras, and freesoftware. Under this scheme, residents would view their surroundings using cheap cameras as their own eyes and home computers as their own brains with altruistic spirit. Community safety would thus be realized by the voluntarily cooperation and altruism of ordinary citizens using widespread modern technology. In this paper, an attempt for realizing the residential district security using the e-JIKEI Network is described.

Oleh Velychko, Tetyana Gordiyenko
NEW TASKS OF METROLOGY ON GLOBAL ENVIRONMENTAL PROBLEMS

Significant attention is paid to general questions relative to new activity of international organizations for solution of new tasks of metrology on global environmental problems, monitoring of global climate change, and Webbases e-learning for technical environmental experts, which are conducted by international environmental organizations.

T. Katsumata, H. Aizawa, W. Takechi, K. Ito, S. Komuro, T. Morikawa
GAS SENSING USING PHOTOLUMINESCENCE FROM PHOSPHOR CONTAINED SILICA GEL

Variations in the photoluminescence (PL) spectra from porous silica gel containing the luminous organic pigments were evaluated before and after the exposure in the vapors of CHCl3. Peak intensity of PL from rhodamine and fluorescein contained silica gel vary with the concentration of pigment. Peak intensity of PL also varies after exposure in the organic vapors of CHCl3. Temperature dependences of PL intensity from rhodamine and fluorescein contained silica gel are also evaluated for sensor applications. The organic luminous pigments contained silica gel is suggested to be useful fluorescent sensor materials.

Shigeru Takayama, Motoshi Hiraoka, Koichiro Mori, Komyo Kariya
LANDSLIDE DISASTER MONITORING BY WIRELESS SENSING NETWORK

Sensing system to monitor natural disasters faces much hard conditions. Natural disaster occurs suddenly, and damages sensor system. Then, the sensor system should be designed as distributed node network. In addition to that, the network should have some characteristic functions like self-recovery, autonomous operation and effective data transmission in urgent. This paper describes the construction of autonomous sensing node network to recover the damage by landslide disaster and to transmit urgent data effectively. The sensing node network is operated by three mode(initializing mode, measuring mode and urgent mode). By switching these operation modes autonomously, the sensing node network becomes robust system to the loss/insert of sensing node and the dynamic control of data transmission. Finally by some experiments, the effectiveness of operation is shown.

Roberto G. Pereira, Carlos E. Fellows, Cesar D. Oliveira, Jorge L. Oliveira, Paulo Cesar P. Oliveira, Oscar E. P.
CHARACTERIZATION AND EFFECT OF USING BLENDS OF DIESEL AND SOYBEAN BIODIESEL AS FUEL IN A STATIONARY ENGINE

The present work describes an experimental investigation concerning the electric energy generation using blends of diesel and soybean biodiesel. The soybean biodiesel was produced by a transesterification process of the soybean oil using methanol in the presence of a catalyst (KOH). The properties (density, flash point, viscosiy, pour point, cetane index, conradson carbon residue and distillation) of the diesel and soybean biodiesel were determined. The exhaust emissions (CO, CO2, CxHy, O2, NO, NOx and SO2) were, also, studied. The results show that the use of diesel-soybean biodiesel as fuel blends in stationary engine is an alternative for the sustainable development.

Roberto G. Pereira, Gilberto A. Romeiro, Daniel L. T. Fernandes, Carlos E. Fellows, Oscar E. P. Tulcán
MEASUREMENTS OF EXHAUST EMISSIONS AND ELECTRIC POWER IN A STATIONARY ENGINE USING BLENDS OF DIESEL AND AN ALTERNATIVE FUEL

The present work describes an experimental investigation concerning the exhaust emissions and the electric energy generation using blends of diesel and an alternative fuel obtained through the Low Temperature Conversion process applied to petrochemical residue. The alternative fuel (LTCF) was obtained in a Pilot Unit. The exhaust emissions (CO, CO2, O2, NO, NOx and SO2) were, also, studied. The results show that the use of diesel-LTCF blends in stationary engine is an alternative for the sustainable development. The mixture 10%vol. of LTCF and 90%vol. of diesel is the best one concerning the exhaust emissions.

Cédric Rivier, Guillaume Labarraque, Philippe Charlet, Jean-Max Rouyer, Marie-Philippe Seiller
COOPERATION BETWEEN NMIs AND PROFICIENCY TESTING PROVIDERS CAN IMPROVE THE QUALITY OF ANALYSES

Certified Reference Materials and Proficiency Testing Schemes are essential tools to ensure the quality of analyses of “field” chemical laboratories. LNE, the French National Metrology Institute has participated in a proficiency test, organized by BIPEA, on the determination of mercury and selenium in drinking water to guarantee the traceability of laboratory measurement to the SI unit. This new cooperation between NMI and PT providers allows to establish new traceability schemes for chemical analyses.

Peter Princz, Scot E. Smith
COMPLEX BIOLOGICAL DEGRADABILITY TEST OF PHARMACEUTICAL WASTEWATERS

The composition and, consequently, the biological degradability (BD), of pharmaceutical wastewaters are not constant in time. To optimize the wastewater management of a pharmaceutical factory, real time data are needed about the BD of wastewaters. In our experiments, it was found that measurements using a lab-scale wastewater treatment plant (LWWTP) and a short-time BOD (RBOD) meter, as well as the combined evaluation of RBOD and COD data ensured rapid and accurate assessment of BD of wastewaters.

Page 881 of 977 Results 8801 - 8810 of 9762