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Cheval S.,National Research and Development Institute for Environmental Protection | Dumitrescu A.,National Meteorological Administration | Dumitrescu A.,University of Bucharest | Petrisor A.-I.,National Institute for Urban and Spatial Planning Urbanproiect | Petrisor A.-I.,University of Architecture and Urbanism, Bucharest
Carpathian Journal of Earth and Environmental Sciences | Year: 2011

Based on July land surface temperature (LST) in the Romanian Carpathians derived from MODIS (Moderate Resolution Imaging Spectroradiometer) images, this paper investigates the vertical thermal lapse and the influence of several factors. The astronomical parameters, atmospheric circulation and geographical factors are relatively similar in the area of interest, so that the influence of elevation, aspect, and land cover becomes more relevant at regional scale. Slope angle has a marginal influence in influencing the daily vertical lapse. In the Romanian Carpathians, the temperature lapse rate of -0.65°C varies considerably both in time, and space, according to local conditions. The LST and air temperature eventually follows a similar diurnal regime, but their lapse rates are different. The screen temperature lapse rate is steeper by daytime, and milder during the night, while the situation reverses for LST. Despite some inherent shortcomings, the spatial and temporal resolution of the MODIS products MOD11_L2 and MYD11_L2 used in this study are suitable for mountain climatology.

Diacu E.,Polytechnic University of Bucharest | Ungureanu E.-M.,Polytechnic University of Bucharest | Jurcovan M.M.,Polytechnic University of Bucharest | Ene C.P.,Polytechnic University of Bucharest | Ivanov A.A.,National Research and Development Institute for Environmental Protection
Revista de Chimie | Year: 2012

The electrochemical behaviour of the synthetic food dyes tuffSunset Yellow-E 110 is discussed in comparison with our Tartrazine previous data. Voltammetric experiments obtained by cyclic voltammetry and differential pulse voltammetry were performed on glassy carbon electrode in buffered aqueous solutions at different pH values. The influence of SUN concentration, scan rate and pH, on the currents and peak potentials have been studied. The electrode processes are controlled by diffusion. Both applied voltammetric methods showed a good matching of the electrochemical parameters, and any of this simple, high-performance, and inexpensive methods can be recommended for the determination of trace SUN levels in commercial soft drinks. In the same time, an assessment of SUN degradation process can be achieved by the interpretation the voltammetric data.

Holban E.,Polytechnic University of Bucharest | Diacu E.,Polytechnic University of Bucharest | Descu V.,National Research and Development Institute for Environmental Protection
UPB Scientific Bulletin, Series B: Chemistry and Materials Science | Year: 2015

The yearly variation of the soil quality for the samples collected from four important points of a cement plant and from Hamzoia village situated near the plant, during 2006-2013 period is assessed. The samples were collected during eight years from the four following sampling points: fuel deposit, landfill, general evacuation and village. The analyzed parameters for soil were: pH, conductivity, cadmium, copper, chromium, nickel, lead, zinc, manganese and petroleum products content. The concentration level of heavy metals in soil has indicated that the cement industry together with the traffic emissions were mainly responsible for metal pollution in that respective area.

Badescu V.,Polytechnic University of Bucharest | Gueymard C.A.,Solar Consulting Services | Cheval S.,National Research and Development Institute for Environmental Protection | Oprea C.,National Meteorological Administration | And 6 more authors.
Renewable and Sustainable Energy Reviews | Year: 2012

Fifty-four broad band models for computation of global and diffuse irradiance on horizontal surface are shortly presented and tested. The input data for these models consist of surface meteorological data, atmospheric column integrated data and data derived from satellite measurements. The testing procedure is performed for two meteorological stations in Romania (South-Eastern Europe). The testing procedure consists of forty-two stages intended to provide information about the sensitivity of the models to various sets of input data. There is no model to be ranked "the best" for all sets of input data. Very simple models as well as more complex models may belong to the category of "good models". The best models for solar global radiation computation are, on equal-footing, ESRA3, Ineichen, METSTAT and REST2 (version 81). The second best models are, on equal-footing, Bird, CEM and Paulescu & Schlett. The best models for solar diffuse radiation computation are, on equal-footing, ASHRAE2005 and King. The second best model is MAC model. The best models for computation of both global and diffuse radiation are, on equal-footing, ASHRAE 1972, Biga, Ineichen and REST2 (version 81). The second best is Paulescu & Schlett model. © 2011 Elsevier Ltd. All rights reserved.

Deak G.Y.,National Research and Development Institute for Environmental Protection | Daescu V.,National Research and Development Institute for Environmental Protection | Holban E.,National Research and Development Institute for Environmental Protection | Marinescu P.,University of Bucharest | And 4 more authors.
Journal of Environmental Protection and Ecology | Year: 2015

The increase of life quality is our common goal and it represents the concept which stands for the progress of the modern mankind. It is a well known fact that certain polluting substances existing in water, food or atmosphere are determining factors of human health. It is estimated that, for example, approx. 16% of diseases and deaths registered in case of children could be caused by an inadequate quality of environmental factors. Monitoring of environment quality through surveillance of general and specific indicators that are representative in evincing the pollution negative effects on health state is a valuable instrument in the struggle to improve life quality as well as to ensure sustainable development. Coherent monitoring of population health state related to specific areas of some polluting factors enables us eventually to ensure an integrated health-environment monitoring. This type of problem is part of the research activity of the National Research and Development Institute for Environmental Protection as it is focussed on the priority given to health-environment relation and leads to life quality improvement.

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