322,898 research outputs found
Nuclear structure in root cortical cells of a vesicular arbuscular mycorrhiza, as affected by differentiation and the presence of the fungus
No full textEPIDEMIOLOGICAL SURVEY ON FRESHWATER FISH-BORNE PARASITIC ZOONOSES: STUDY OF BIOTIC AND ABIOTIC FACTORS INFLUENCING THE OCCURRENCE OF ZOONOTIC HELMINTHS IN FRESHWATER FISH POPULATIONS FROM NORTHERN ITALY AND IDENTIFICATION OF MAIN RISK FACTORS CONTRIBUTING TO THEIR TRANSMISSION TO MAN
No full textMain aims of the project are:
- to assess geographical and seasonal distribution, prevalence, intensity and abundance of Diphyllobothriids, Opisthorchiids and other zoonotic parasites in wild freshwater fish populations in order to map the zoonotic risk in Northern Italy with main reference to fish species at risk of being raw-consumed;
- to study the abiotic/biotic factors characterizing the aquatic environments under study in relation to biology and epidemiology of zoonotic helminths;
- to check the health hazard referable to the possible presence of zoonotic helminths in susceptible fish species which are farmed in systems connected to the environments under study;
- to furnish comprehensive epidemiological data on zoonotic parasites in fish populations from different lacustrine and farm environments in Northern Italy in order to assess the health risk linked to consumption of local raw fish-based traditional and/or typical dishes
Transtracheal open ventilation (TOV) to treat acute COPD exacerbation in non-invasive ventilation (NIMV) failures
No full textPresenza di metalli pesanti in tartarughe comuni(Caretta caretta)piaggiati lungo le coste pugliesi
No full textDiffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Humboldt penguins’ feathers as bioindicators of metal exposure
No full textAvian feathers have the potential to accumulate trace elements originating from contaminated food and polluted environments. In fact, in feathers, metals bind to keratin, a sulphur-containing protein for which several metals have a strong affinity. Here, the concentrations of 18 essential and non-essential elements were investigated in a Humboldt penguin (Spheniscus humboldti) colony housed at the Acquario di Cattolica (Italy). This species is listed as vulnerable in the Red List of the International Union for Conservation of Nature. According to the literature, there is usually a link between metal levels in the diet of birds and levels detected in their feathers. Thus, metals were also determined in the penguins’ food (capelin, Mallotus villosus). We hypothesize that the controlled conditions in which birds are kept in captivity, and the homogeneous diet that they follow could allow a better understanding of metal bioaccumulation (such as mercury) or bio-dilution (such as arsenic) in the marine food chain, indicated by penguins’ feathers. Moreover, comparisons with our previous investigations performed on an ex-situ African penguin (Spheniscus demersus) colony suggest that penguins living indoors have lower body burden of metals than those living outdoors. Indeed, environmental contaminants usually found in areas subjected to anthropogenic impact, where zoos and aquaria are often located, are not accumulated to levels of concern
Cetacean mass strandings and multidisciplinary work
No full textLetter to the Editor discussing the paper Squadrone, S., Chiaravalle, E., Gavinelli, S., Monaco, G., Rizzi, M., Abete, M.C., 2015. Analysis of mercury and methylmercury concentrations, and selenium:mercury molar ratios for a toxicological assessment of sperm whales (Physeter macro- cephalus) in the most recent stranding event along the Adriatic coast (Southern Italy, Mediterranean Sea). Chemosphere 138, 633e64
Evaluation of ABC efflux transporters genes expression in kidney of rainbow trout (Oncorhynchus mykiss) fed with melamine and cyanuric acid diets
No full textGene expression experiments were targeted in order to monitor the ABC efflux transporters, which is
potentially involved in cellular detoxification/defense. Changes in expression levels of different ABC
genes in kidney of Oncorhynchus mykiss fed with melamine and melamine + cyanuric acid enriched diets
were recorded in both treated groups by mRNA DDCT relative quantification method. Expression profiles
of eight different ABC genes basically showed low alterations in melamine group and more consistent
changes in melamine + cyanuric acid treated fish, compared with own control. In the last group ABCC2
gene over expression was the more evident alteration. These results suggest that ABC efflux system could
be involved in mobilization of hydrophilic molecules in the forcing condition of chronic exposure
Indagine preliminare sull’accumulo di metalli pesanti nella vongola verace autoctona Ruditapes decussatus in alcune zone umide della Sardegna.
No full text- …
