1,721,043 research outputs found
Lotta partigiana e repressione nel Ravennate. Le carte della Wehrmacht
No full textIl saggio attraverso la documentazione della Wehrmacht ricostruisce la storia dell'occupazione tedesca nella provincia di Ravenna focalizzando l'attenzione sulle informazioni raccolte sulla Resistenza locale, sulle valutazioni del movimento partigiano e della sua attività da parte tedesca e sulle fasi di lotta contro la Resistenza
Aspetti clinici e psicopatologici del Maternity Blues tra depressione e nostalgia: risultati di uno studio clinico di follow up
No full textMosquito-based survey for the detection of flaviviruses and filarial nematodes in Aedes albopictus and other anthropophilic mosquitoes collected in northern Italy.
No full textIn order to optimize resources, an assay allowing the detection of several etiological agents would be useful. This paper describes a polymerase chain reaction (PCR)-based assay for the parallel detection of different pathogens in mosquitoes (Diptera: Culicidae). The assay combines the analysis of both RNA and DNA, hence allowing the detection of both flaviviruses (Flaviviridae: Flavivirus) and filarial nematodes (Spirurida: Onchocercidae). The sensitivity of diagnostic assay for both flavivirus and nematode infections was tested by means of spiked samples and resulted adequate for the purpose of screening mosquito samples. The assay was implemented to check pathogen infections in 637 mosquitoes field-collected in Romagna, northern Italy. The integrity of RNA extracted from mosquito pools was checked by control amplifications targeting the 18 S rRNA of mosquitoes. Control amplifications were successful in 118 out of 119 pools. Flavivirus RNA was not found in any of these 118 pools, whereas DNA of Dirofilaria immitis (Leidy) was detected in one pool of Aedes albopictus (Skuse)
Impact of Triflumuron on Halyomorpha halys (Hemiptera: Pentatomidae): laboratory and field studies
Full text linkHalyomorpha halys, (the brown marmorated stink bug, BMSB), is a high-concern invasive species causing severe damage to orchards in many countries outside its native Asian range. Control options matching both effectiveness and sustainability are currently lacking. Inhibitors of chitin biosynthesis might be exploited for integrated management programs because of the overall better ecotoxicological profile in comparison with most neurotoxic insecticides used so far against BMSB. In this study, the activity of triflumuron, a benzoylphenyl urea hampering chitin biosynthesis, was tested on BMSB in laboratory and field conditions. In laboratory bioassays, the insecticide was sprayed on potted peach plants (30 cm high) and residues were aged in a glasshouse for 0, 7, 14, and 21 d. Then, third-instar bugs were placed on the plants and continuously exposed to residues. Mortality was scored after 7, 14, and 21 d exposure. Triflumuron caused significantly higher mortality on BMSB nymphs in comparison with water controls at all aging periods. Moreover, aging of residues up to 21 d did not cause any significant reduction of activity. Field experiments were also carried out in 2019 in eight pear orchards. Injuries to fruits at harvest were compared between plots where triflumuron was added to insecticide sprays against BMSB and control plots managed exactly in the same way but without any triflumuron treatment. An overall mean of 9.99 ± 1.98% stink bug injured fruits was detected in plots managed with the strategy including triflumuron, whereas 19.45 ± 3.55% of fruits were injured in plots assigned to controls
Application of a barrier island translation model to the millennial-scale evolution of Sand Key, Florida
No full textThe evolution of a barrier island and its stratigraphic architecture is investigated with the numerical model BIT (barrier island translation). The model simulates, with simplified equations, the effects of various processes (wind waves, storm surges, sea-level oscillations) on sediment location and characteristics. The presented formulation is able to reproduce both the cross-shore profile and the distribution of sediment facies in time. The model is based on two appropriate simplifying assumptions: (i) the conservation of the total mass of sediments and (ii) the conservation of the equilibrium cross-shore beach profile. Particular attention is devoted to the treatment of sediment reworking by wind waves and barrier overwash, which is induced by extreme events like storms and hurricanes, and causes a relative transport of sediments from the body of the sand barrier to the top of the island and to the back-barrier area. The model is applied to Sand Key, Florida. Model results show a satisfactory reproduction of the geometry and stratigraphy of the inner shelf, with the correct position of every stratigraphic facies within the barrier island. Simulations under different scenarios of sea-level rise during the last 8000 yr indicate that the rate of overwash and lagoonal deposition are critical for the survival of the barrier island under past sea-level oscillations
Aspetti clinici e psicopatologici del Maternity Blues tra depressione e nostalgia: risultati di uno studio clinico di follow up
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