126 research outputs found
Metals in Feathers of African Penguins (Spheniscus demersus): Considerations for the Welfare and Management of Seabirds Under Human Care
Dynamic scaling approach to study time series fluctuations
We propose a new approach for properly analyzing stochastic time series by
mapping the dynamics of time series fluctuations onto a suitable nonequilibrium
surface-growth problem. In this framework, the fluctuation sampling time
interval plays the role of time variable, whereas the physical time is treated
as the analog of spatial variable. In this way we found that the fluctuations
of many real-world time series satisfy the analog of the Family-Viscek dynamic
scaling ansatz. This finding permits to use the powerful tools of kinetic
roughening theory to classify, model, and forecast the fluctuations of
real-world time series.Comment: 25 pages, 7 figures, 1 tabl
Workplace Bullying among Healthcare Professionals: A Quanti-Qualitative Survey in a Sample of Women Working in an Italian Healthcare Setting
First Insights Into Trace Element Accumulation by Philoscia affinis (Crustacea, Isopoda): a Novel Tracer to Assess Soil Contamination in Lowland Plains?
Isopods are terrestrial invertebrates that accumulate trace elements in large quantities, thus providing information on levels of soil
contamination. However, the accumulation pattern seems to be species dependent. For this study, specimens of Philoscia affinis
(Isopoda, Oniscidea) and soil samples were collected from both a protected area (site 1) and urban roadside (site 2) in the low
plain of Friuli-Venezia Giulia (northeast Italy) to determine whether P. affinis could serve as a potential candidate for monitoring
soil contamination. To do this, the following objectives were achieved: a) the level of trace elements (Al, Cd, Cu, Fe, Hg, Mn, Pb,
Zn) were detected in soils and isopods; 2) the difference in trace elements accumulation was compared in the two sampling sites;
3) the bioaccumulation factor (BAF) was calculated for each element. With some exceptions, trace element concentrations were
higher in both isopods and soil samples from the urban roadside compared to the protected area. Furthermore, except for Cd, Cu,
and Zn, trace element levels were higher in the soil than in the isopod samples. The higher mean BAF values were recorded for
Cd (6.169 and 6.974 for site 1 and 2, respectively), Cu (10.324 and 11.452 for site 1 and 2, respectively), and Zn (1.836 and 2:
1.943 for site 1 and 2, respectively), whereas BAF values <1 were recorded for the other elements. Philoscia affinis was found to
be a potential candidate to monitor soil contamination as a macro-concentrator of Cu and Cd and a micro-concentrator of Zn
SARS-CoV-2 and indoor/outdoor air samples: a methodological approach to have consistent and comparable results.
Astaxanthin and canthaxanthin (xanthophyll) as supplements in rainbow trout diet: In vivo assessment of residual levels and contributions to human health
Dynamic monitoring of the shelf life of Cobia (Rachycentron canadum): a study on the applicability of a smart photochromic indicator.
To ensure the marketing of fresh fish-based products, it is necessary to develop fast methods that assess its freshness in real time. This study therefore evaluated the applicability of a photochromic time?temperature indicator (TTI) to monitor the time and temperature history during the period of validity of the whole fish of the cobia specimen stored in ice. The TTI response was both visibly interpreted as well as adaptable to measurement using suitable equipment. The results showed that the smart indicator activated during 6 s of ultraviolet light showed a similar rate of deterioration of the analysed product visual response, proving to be a dynamic shelf life indicator that can assure consumers the ultimate quality point of the entire cobia easily, cheaply and accurately
Oxidative stress related to chlorpyrifos exposure in rainbow trout: Acute and medium term effects on genetic biomarkers
Zooplankton from a North Western Mediterranean area as a model of metal transfer in a marine environment
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