Buscar
Mostrando ítems 1-10 de 214
Kinetic parameters for thermal decomposition of hydrazine
(2013-09-01)
The propulsion of most of the operating satellites comprises monopropellant (hydrazine - N2H4) or bipropellant (monometilydrazine - MMH and nitrogen tetroxide) chemical systems. When some sample of the propellant tested ...
Artificial intelligence techniques and near-infrared spectroscopy for nitrogen content identification in sugar cane crops
(2016-12-08)
The strong rising on demand for agricultural crop quantity and quality, beyond the growing concern of non-point pollution, are requiring higher levels on agricultural production systems efficiency and environmental safety. ...
Artificial Intelligence Techniques and Near-Infrared Spectroscopy for Nitrogen Content Identification in Sugar Cane Crops
(Ieee, 2016-01-01)
The strong rising on demand for agricultural crop quantity and quality, beyond the growing concern of non-point pollution, are requiring higher levels on agricultural production systems efficiency and environmental safety. ...
Effects of hand weeding strip and nitrogen fertilizer on corn plants
(2005-01-20)
The objective of the present research was to evaluate effects of different strip weed control associated with nitrogen fertilizer on corn applied after planting. The experiment was set and conducted in Botucatu, São Paulo ...
Diffusion of Nitrogen in Ti-13V-11Cr-3Al Alloys
(Trans Tech Publications Ltd, 2009-01-01)
Metals with a bcc crystalline structure such as Ti-13V-11Cr-3Al alloys have their physical properties significantly changed through the addition of interstitial elements such as oxygen and nitrogen. These metals can dissolve ...
Nitrogen diffusion in the Nb-2.0wt%Ti measured by mechanical spectroscopy
(Trans Tech Publications Ltd, 2008-01-01)
Metals that present bcc crystalline structure, when receiving addition of interstitial atoms as oxygen, nitrogen, hydrogen and carbon, undergo significant changes in their physical properties, being able to dissolve great ...
Plasma-polymerized acetylene nanofilms modified by nitrogen ion implantation
(2013-06-15)
Thin films were prepared by plasma enhanced chemical vapour deposition (PECVD) from a mixture of acetylene and argon, and post deposition-treated by plasma immersion ion implantation (PIII). The effect of PIII on the ...
Nitrogen diffusion in the Nb-1.0wt%Zr measured by mechanical spectroscopy
(Trans Tech Publications Ltd, 2008-01-01)
The scientific and technological development in the area of new materials contributed to several applications of niobium and its alloys in nuclear power plants as well as in aerospace, aeronautics, automobile and naval ...
A novel intelligent system to nitrogen content prediction in plants using indirect chlorophyll measurements
(Amer Soc Agr Engineers, 2001-01-01)
The accurate identification of the nitrogen content in plants is extremely important since it involves economic aspects and environmental impacts, Several experimental tests have been carried out to obtain characteristics ...
Nitrogen content identification in crop plants using spectral reflectance and artificial neural networks
(2001-01-01)
The accurate identification of the nitrogen content in crop plants is extremely important since it involves economic aspects and environmental impacts. Several experimental tests have been carried out to obtain characteristics ...