86,661 research outputs found
FIGURE 1 in Substrate dependent talitrid amphipods from fragmented beaches on the north coast of Crete (Crustacea, Amphipoda, Talitridae), including a redefinition of the genus Orchestia and descriptions of Orchestia xylino sp. nov. and Cryptorchestia gen. nov.
No full textFIGURE 1. Sampling sites. From West to East: a) Sand West; b) Banquette, mainly Posidonia; c) Mixed West; d) Sand East; e) Cobble; f) Mixed East. Pictures were taken during the summer season (July 2012) to highlight the human use of the supralittoral on the two sandy beaches and on Mixed East.Published as part of Lowry, J. K. & Fanini, Lucia, 2013, Substrate dependent talitrid amphipods from fragmented beaches on the north coast of Crete (Crustacea, Amphipoda, Talitridae), including a redefinition of the genus Orchestia and descriptions of Orchestia xylino sp. nov. and Cryptorchestia gen. nov., pp. 201-229 in Zootaxa 3709 (3) on page 203, DOI: 10.11646/zootaxa.3709.3.1, http://zenodo.org/record/21577
Azione teratogena e mutagena dei farmaci. In: Patologia orale in corso di malattie sistemiche, Ed. F. Marci, F. Antenucci, D. Fanini, B. Grilli, M.C. Marci. A.M. Mazza, A. Monaco; UTET Periodici: Il Dentista Moderno, 6, 11-23, 1997
No full textVariable orientation within a natural population of the sandhopper Talitrus saltator (Crustacea: Amphipoda) as a response to a variable environment: The case-study of Berkoukesh beach, Tunisia
No full textSandy beaches are harsh environments, driving resident arthropod populations to various typical adaptations, particularly behavioural ones. Here we evaluated the effects of seasonal meteorological variability on the behaviour of Talitrus saltator on Berkoukesh beach (N-W Tunisia). The site is characterised by a Mediterranean climate, but is particularly exposed to seasonal winds and storms. The shoreline is in morphodynamic equilibrium. We tested sandhopper Talitrus saltator orientation in April, when sudden rainfall and storms are common, and in June, when as a rule the weather is warm and dry. The results were analysed with circular statistics and multiple regression models adapted to angular distributions, in order to highlight differences in orientation under the various conditions. Depending on the environmental conditions, amphipods from the same population appeared to utilise various orientation strategies as a response to different environmental constraints. The use of a range of behavioural mechanisms (sun-orientation seaward, sun-orientation landward, and phototaxis) resulted in links to the local landscape and to the animals' life cycle. As a general conclusion, we can infer that the behavioural variability found within the same population represents a response to seasonal environmental fluctuation. Such an increase in variability is likely to develop on a beach in dynamic equilibrium, where landscape references are stable, and a variable behaviour represents a strategy for dealing with environmental fluctuations. © 2007 Elsevier Ltd. All rights reserved
Dynamics of plastic resin pellets deposition on a microtidal sandy beach: Informative variables and potential integration into sandy beach studies
No full textThe study addressed temporal dynamics of plastic resin pellets input on a Mediterranean beach, paired with standard environmental variables known to be relevant to sandy beach ecology. Time-related component of the study were related to two levels: 1) weekly sampling along one year, and 2) allocation of beached pellets to categories “old” and “new” as proxy of the time spent in the environment. Pellets were collected by sieving along a fixed transect perpendicular to the shoreline. In correspondence of each sampling were measured beach width and beach face slope. Weekly records of main wind direction and strength, and seasonal substrate mean grain size estimates were added to the dataset. Both density of total pellets and density of “new” pellets were modelled with quantile regression analysis, and best models were selected by Akaike Information Criterion. Data indicate a constant input of pellets ashore, with about 50% evenly represented by “new” items. Beach width resulted the only variable significant to pellets’ density, whether total or “new” with increasing densities of pellets related to narrower beach widths, best explained by a logarithmic fashion. Results hence point to plastic resin pellets as a pressure impact, rather than a spill-related, time-limited one. A list of simple and cost-effective measurements of sandy beach features is provided as a guidance to couple basic ecological information with a possible range of research (including citizen science) addressing beached anthropogenic litter -including plastic pellets. This would ideally enhance the relevance of both research on beached plastics and sandy beach biota, so far running along parallel paths
Variazioni del pH salivare in relazione a trattamenti conservativi e protesici nel cavo orale.
No full textValutazione del rischio di difficoltà scolastiche e potenziamento di abilità di base. Risultati di un progetto pilota nella scuola dell’infanzia.
No full texta più recente letteratura internazionale sui disturbi dell’apprendimento
evidenzia la necessità di individuare precocemente, già nella scuola dell’infanzia,
bambini a rischio di successive difficoltà scolastiche e di programmare progetti
preventivi di potenziamento delle abilità di base più importanti per l’apprendimento
scolastico. In questo lavoro presentiamo un progetto pilota condotto in
una scuola dell’infanzia, in cui 6 bambini dell’ultimo anno, individuati come «a
rischio alto» in base alle prove PAC-SI di screening (su un campione iniziale di
55 bambini) hanno partecipato ad attività di potenziamento nelle seguenti aree:
consapevolezza fonologica, denominazione rapida, memoria a breve termine e
abilità visuospaziali. Il confronto delle prestazioni dei bambini al follow-up con
due diversi campioni di riferimento evidenzia l’efficaciaThe most recent international literature on learning disabilities highlights
the need for early detection, as early as kindergarten, of children at risk for later
academic difficulties and for planning preventive projects to strengthen the basic
skills important for school. In this paper we present a pilot project in which 6
children in the last year of kindergarten were identified as «high risk» based on
PAC-SI screening tests (on a sample of 55 children). They participated in training
activities in the following areas: phonological awareness, rapid naming, shortterm
memory and visual-spatial skills. The comparison of children performances
at follow-up, with two different reference samples, shows the effectiveness of the
intervention in improving the basic skills considered
MicroRNAs as lung cancer biomarkers and key players in lung carcinogenesis.
No full textLung cancer is the leading cause of cancer deaths worldwide and few genetic markers enable to evaluate lung cancer risk. MicroRNAs (miRNAs) are small non-coding RNAs that regulate gene expression during various cell processes such as apoptosis, differentiation and development. In these last years, many works confirm a role for miRNAs in the initiation and progression of lung cancer. miRNA profiling has the potential to classify tumors with high accuracy and predict outcome. Here, we describe the roles of miRNA in lung carcinogenesis and the possibility to use them as biological markers for diagnostic, prognostic and predictive purposes
Deconstructing responses of sandy beach arthropodofauna to shoreline erosion: looking for the proper spatial scale to monitor biodiversity
No full textThe suitability of the small spatial scale of sandy beaches was tested as unit for monitoring biodiversity. The study targeted a coastal stretch in central Mediterranean, characterised by a patchy landscape and erosion trend. Beach arthropod communities (abundance, biodiversity and behavioural adaptation) were considered in the context of ongoing changes and threats to beach habitats. Nine beach units were selected as part of three main coast sectors, each with a different exposure. Beach units were sampled for arthropod diversity, which was assessed at different levels of organisation: taxa abundance, diversity indices and behavioural adaptation. These features were used as response variables in models considering beach physical factors. Sand grain size, swash extent and beach slope resulted the driving forces for abundance and diversity. Behavioural tests indicated a local adaptation to the shoreline direction, with mean angles of orientation seawards. Data related to biodiversity assessment were applied to the estimate of Conservation and Recreation Indices (CI and RI). Coast sectors subject to different erosion rates scored differently, pointing to a potential conflict in management of beaches subject to physical erosion. Overall, data depicted beach sectors, each one including one or more beach units, as the most suitable dimension for deconstruction to the small-spatial scale. The selection of the scale for deconstruction, applicable to geomorphological, biological and managerial contexts, would be of paramount importance to guide decision-making and compare coastal stretches also in other geographic contexts
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