170,248 research outputs found
The honey bees as bioindicators of the environmental contamination
No full textThe honey bees as bioindicators of the environmental contaminatio
Melissopalynological analysis applied to air pollution studies in urban areas of Modena and Reggio Emilia (Italy).
No full textMonitoraggio della qualità dell'aria attraverso analisi mieli cittadini
Api e ambiente. La multifattorialità è indubbia, eliminare le cause conosciute, proseguire monitoraggio e studi
No full textabstrac
Orange juice vs. vitamin C : effect on hydrogen peroxide-induced DNA damage in mononuclear blood cells
No full textThe intake of fruits rich in vitamin C seems to increase the antioxidant defence of the organism. However, it is still not clear whether vitamin C alone is responsible for this effect. The aim of the present investigation was to study the effect of the intake of a single portion of blood orange
juice (BOJ, 300 ml, providing 150 mg vitamin C) on mononuclear blood cell (MNBC) DNA damage, compared with a drink supplemented with the same amount of vitamin C (C-drink) or sugars (S-drink). Seven young healthy subjects were randomised in a repeated-measures design in which they received each drink on different occasions, 2 weeks apart. Blood samples were collected at baseline, every hour for 8 h, and at 24 h after the
intake of each drink. Vitamin C was analysed at each time point by HPLC, whereas H2O2-induced MNBC DNA damage was evaluated at 0, 3 and 24 h by means of the comet assay. Plasma vitamin C concentration increased similarly following BOJ or C-drink intake and was not affected by the S-drink. DNA damage significantly decreased 3 h after BOJ intake (about 18 %; P,0·01) and remained constant at 24 h (about 16 %; P,0·01). No
effect of the C-drink and S-drink was observed. In conclusion, the intake of a single portion of BOJ provided an early protection of MNBC against oxidative DNA damage; however, the protective effect of BOJ was not explained by vitamin C alone, thus other phytochemicals could be involved
Ergogenic Aids and Supplements
No full textGreat interest is currently shown for the contribution of nutrition to optimize training and athletic performance, and a considerable debate exists about the potential ergogenic value of several dietary supplements. However, most of the products used by athletes do not provide sufficient scientific evidence regarding their efficacy in enhancing physical performance as well as their specificity of action and safety. For this reason, sport nutrition professionals need skills in evaluating the scientific value of papers and advertisements on ergogenic aids and supplements in order to support athletes in their choice. In the present chapter, the efficacy of some of the most popular supplements used by athletes and sport practitioners will be discussed. Particular attention will be devoted to amino acids and derivatives, caffeine and caffeinated energy drinks, and some antioxidants
Empleo de abejas melíferas [Apis mellifera L.] para el biomonitoreo de contaminantes ambientales
No full textabstrac
La salvaguardia degli insetti pronubi per la conservazione della biodiversità
No full textLa salvaguardia degli insetti pronubi per la conservazione della biodiversita
Black boxes and market efficiency: the effect on premiums in the Italian motor-vehicle insurance market
No full textThe paper addresses the research question of whether black boxes affect the market efficiency, particularly by reducing the level of premiums. The case analyzed is the Italian motor-vehicle insurance market, characterized by the greatest amount of black boxes in the world as a consequence of regulatory interventions that fostered the spread of these kinds of devices. Particularly, using the data provided by the Italian Insurance Authority (IVASS), we show a specific relation between the increasing number of these devices and the decreasing trend in average premium. Conclusive remarks outline that in the near future this efficiency effect may increase because of the specific use of information derived from the black box that reveals the behaviors of the drivers and allows for innovative ways of individually profiling the insurance policies
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