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The new concept of aging: Fitness and leisure sporting apparel adequacy for the “ageless” generation
(2019-01-01)
Predictions about increasing longevity in the world indicate we will live with more than 40% of the population over 45 years. Composed of proactive and active individuals, this “mature” society is focused on healthy habits, ...
Expert systems for protection specification of transformers and equipments related to lightning
(2004-12-01)
The objective of this paper consists of presenting a design of expert system that assists the procedures involved with the protection specification of transformers and equipments against atmospheric discharges, allowing ...
The influence of the loop between residues 223-235 in beetle luciferase bioluminescence spectra: A solvent gate for the active site of pH-sensitive luciferases
(2008-01-01)
Beetle luciferases emit a wide range of bioluminescence colors, ranging from green to red. Firefly luciferases can shift the spectrum to red in response to pH and temperature changes, whereas click beetle and railroadworm ...
Portable Hardness tester for timber classification
(2010-12-01)
Hardness is a property largely used in material specifications, mechanical and metallurgical research and quality control of several materials. Specifically for timber, Janka hardness is a simple, quick and easy test, with ...
Optimization of satellite constellations in the moon
(2010-12-01)
Nowadays, we return to live a period of lunar exploration. China, Japan and India heavily invest in missions to the moon, and then try to implement manned bases on this satellite. These bases must be installed in polar ...
Pressure field in the cathode-anode region of a high-power klystron amplifier
(2004-08-30)
The pressure field of a high-power klystron amplifier in the cathode and anode region was investigated. The investigation was performed using a 1.3 GHz, 100 A and 240 kV high-power klystron with five reentrant coaxial ...