7,057 research outputs found

    Il contributo degli italiani allo studio delle antichità cirenaiche tra ‘700 e ‘800: appunti su aspetti inediti o poco noti

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    Storia delle esplorazioni italiane a Cirene dalla metà del '700 agli inizi dell'800 con documenti di archivi

    Toxicity and residual activity of spinetoram to neonate larvae of Grapholita molesta (Busck) and Cydia pomonella (L.) (Lepidoptera: Tortricidae): Semi-field and laboratory trials

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    Spinetoram is a fermentation insecticide, derived from the actinomycete Saccharopolyspora spinosa. It works by disrupting the GABA-gated chloride channels and by causing persistent activation of insect nicotinic acetylcholine receptors. This study aimed to evaluate the efficacy of spinetoram for control of neonate larvae of both oriental fruit moth (OFM) Grapholita molesta (Busck) and codling moth (CM) Cydia pomonella (L.) in semi-field and laboratory trials. OFM and CM neonate larvae responded similarly to spinetoram, which showed high efficacy on both species. In semi-field experiments, regression analysis of the percentage of damaged fruits as a function of days after treatment showed a better performance of the highest spinetoram dose (10 g a.i./hl) in comparison with the maximum recommended field dose of the reference product emamectin benzoate (2.85 g a.i./hl). Surface-treated diet assays revealed LC50 values of 6.59 and 8.44 ng a.i./cm2 for neonate larvae of OFM and CM larvae, respectively. High percentages of mortality were recorded on both species after 24-h exposure to treated diet. For these reasons spinetoram could be considered a valuable tool in IPM strategies for OFM and CM control

    Fouilles de Toulon. Quartier de Besagne : périodes médiévale et moderne (Bouches-du-Rhône)

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    International audienceAbstract Emergency archaeological investigations carried out recently in Toulon (Besagne quarter), permit to state precisily its antique topography and habitation site on the one hand ; and on the other hand to provide new data concerning as the mediaeval Bourg Saint-Michel as the modern quarter. The fillings of several wells and pits delivered a batch ofceramics of the XVIth century. Thus, one could grasp, the supply of ceramics of the Bourg: supply from various horizons from rather long way off/for instance culinary cer amies from Uzège and eastern Provence. The abundance of ealeareous clay ware, originate from Fréjus, reflects perfectly the output of those local workshops, the productions and diffusion of which, all over the coast, are corroborated by documentary and archaeological testimonies. Résumé Les récentes interventions de sauvetage à Toulon (quartier Besagne) ont permis de préciser la topographie de l'agglomérationLes récentes interventions de sauvetage à Toulon (quartier Besagne) ont permis de préciser la topographie de l'agglomération antique et de donner quelques indications nouvelles sur le bourg médiéval Saint-Michel et le quartier moderne. Le comblement de plusieurs puits et fosses a livré des lots de céramiques du XVIe siècle. On peut ainsi cerner l'approvisionnement céramique de ce bourg : approvisionnement venant d'horizons divers et à plus ou moins longue distance comme la céramique culinaire originaire de l'Uzège et de Provence orientale. L'abondance de la vaisselle en pâte calcaire d'origine fréjusienne, reflète bien l'importance de ces ateliers régionaux dont les productions et la diffusion sur toute la côte sont attestés par les textes comme par l'archéologie

    Bragg concentrators for hard (> 10 keV) X-ray astronomy: Status report

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    The use of focusing telescopes in hard X-ray (E > 10 keV) astronomy will provide better flux sensitivity and imaging perfomances with respect to the directviewing detectors, utilized until now. We present recent results obtained from our Group regarding the possible use of Bragg-diffraction technique to design hard X-ray focusing telescopes

    L'incesto di Silano e il bosco di Diana (Tac. Ann. 12. 8. 1)

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    Analisi della notizia di Tacito sull'incesto di Giunio Silano e dei conseguenti riti di espiazioni condotti nel bosco di Diana Nemorens

    Tissue location of resistance in apple to the rosy apple aphid established by electrical penetration graphs

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    A study of the constitutive resistance of the apple cultivar Florina, Malus domestica Borkh. (Rosaceae), to the rosy apple aphid, Dysaphis plantaginea (Passerini) (Homoptera Aphididae), was performed for the first time by the electrical penetration graph (DC-EPG) system, using the susceptible apple cultivar Smoothe as control. All experiments were conducted with apterous adult virginoparae. The results showed a constitutive resistance in Florina due to a much longer period before the first probe reflecting surface factors. Some weak indications were found for pre-phloem resistance and initiating phloem access was not affected as inferred from equal time to show phloem salivation. However, the complete absence of phloem ingestion indicates a major resistance factor in the phloem sieve elements, most likely in the sieve element sap. Surface factors could have affected tissue related variables and this should be studied further. Anyhow, the strong constitutive resistance in Florina, either on the surface alone or in the phloem as well, effectively prevented reliable experiments on induced resistance, previously detected by molecular methods

    Scritti minori

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    Presentazione degli scritti minori di Storia, e Storigrafia romana di G. Vitucc

    Coastal Urbanization and Land Planning in Southern France

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    International audienceUrban sprawl is one of the main pressures affecting coastal areas in the Mediterranean. To assist spatial planning and coastal management policies, the study of urbanization and the characterization of the evolution of built-up areas along the coast are essential prerequisites. In this perspective, the production of land use data sets at a large-scale is necessary. They allow spatio-temporal analysis and, simultaneously, may be used to assess the efficiency of city planning and land planning documents. In France, where the political concern for the protection of the coasts and the limitation of urbanized areas started in the seventies, many tools and planning documents exist and can be put into force at several levels of territorial administration. However, urban sprawl is still a critical issue. It is therefore necessary to analyze how far national policies as well as local spatial planning practices are adapted. Taking as case studies two Mediterranean coastal zones of France (the Côte bleue, close to Marseilles, and the area of the Biguglia Lagoon, next to Bastia in Corsica), this article aims at analyzing jointly the evolution of urban areas along with the process of land planning

    Exact off-resonance near fields of small-size extended hemielliptic 2-D lenses illuminated by plane waves

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    The near fields of small-size extended hemielliptic lenses made of rexolite and isotropic quartz and illuminated by E- and H-polarized plane waves are studied. Variations in the focal domain size, shape, and location are presented versus the angle of incidence of the incoming wave. The problem is solved numerically in a two-dimensional formulation. The accuracy of results is guaranteed by using a highly efficient numerical algorithm based on the combination of the Muller boundary integral equations, the method of analytical regularization, and the trigonometric Galerkin discretization scheme. The analysis fully accounts for the finite size of the lens as well as its curvature and thus can be considered as a reference solution for other electromagnetic solvers. Moreover, the trusted description of the focusing ability of a finite-size hemielliptic lens can be useful in the design of antenna receivers.Comment: 7 pages, 7 figure
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