460 research outputs found
Tra storia familiare e memoria collettiva: la rappresentazione del “Promemoria per i miei figli” di Rosalia Borbiconi Busignani per la Giornata della Memoria 2017
No full textNell'ambito delle celebrazioni per la Giornata della Memoria 2017 la Scuola Secondaria Superiore ha deciso di proporre a circa 300 studenti un adattamento teatrale di Paolo Rondelli che trae origine dal diario lasciato da una insegnante sammarinese ai propri figli quale racconto delle vicende che la sua famiglia subì a seguito del bombardamento di San Marino da parte della RAF avvenuto il 26 giugno 1944. Il saggio racconta a quattro mani l'esperienza con gli studenti e riporta il testo rappresentato a teatro, laddove una vicenda familiare, un lavoro teatrale, le emozioni di singole persone, divengono strumento di didattica e partecipazione collettiva al ricordo di un fatto storico
The performance of an air-assisted sprayer operating in vines
No full textThe performance of a sprayer fitted with two vertical adjustable air outlets has been studied in vineyards investigating the effects of changing the fan speeds (1400, 2000 and 2500/min) and the direction of the air-jet (90 and 120° backward angle of the outlet side deflectors in relation to the treated row). Laboratory measurements were made before the field trials in order to define the operating characteristics of the sprayer. The sampling methodology in the vineyard was based on a framework and a system of intersecting nylon threads dividing the canopy into elementary volumetric zones. The spray flux entering and leaving the canopy, and the losses to the ground and to the air were measured. The spray coverage on the leaves at different heights and depths in the canopy has been also quantified. In all the tests, the air outlets were adjusted to localize the spray application to the appropriate heights determined by the growth of canopy. Considering the spray deposit and the environmental losses, the best results were observed with the 120° backward angle of the outlet side deflectors and the low and medium fan speeds. The effect of the fan speed compared with that of the direction of the air stream appeared more evident. The spray losses doubled by increasing the fan speed and frequently these losses were not limited to the treatment area but drifted outside. The degree and the uniformity of the spray coverage were strongly influenced by the high fan speed. © 2000 Silsoe Research Institute
Evaluation of a prototype spreader in the distribution of poultry manure
No full textA study of a prototype spreader evaluated the distribution of four poultry manures differing in terms of composting degree and moisture content. The chemical and physical properties such as wet bulk density, moisture content, and static frictional characteristics of the manures were evaluated. The prototype was set up for orchard and arable crops and the spinner speed and point of delivery of the organic fertilizer onto the spinners were adjusted. When properly adjusted it was suitable for broadcast manure distribution and in bands. In the former, an increase in spinner speed improved the throwing width and effective swath width. The best results for the point of delivery of the organic material were achieved by moving the point of delivery away from the center of the spinners. In the band distribution, the best results were observed when the point of delivery coincided with the center of the spinners and spinner speed was low. The physical properties of the fertilizers influenced the distribution pattern. The poorest results were observed in the distribution of manure with large particles and high moisture content. A proper management process of poultry manure is recommended for improving the distribution quality
Memorial sites in countries in transition to democracy
No full textThis work is inspired and originated from an experience of cooperation with the Council of Europe, lasted from summer 2005 to the end of 2009, as a member of various delegations that have made observation missions in different countries, mainly belonging to the former Soviet bloc and the former Yugoslavia. In that capacity the author was able to witness firsthand the effects of a policy change on society, which was very rapid after the fall of the Berlin Wall, an event that is a symbol, in those areas, the watershed between two opposed eras. On the one hand, the domain of socialcommunist ideology and on the other that freedom so much dreamed, which later led to considerable social dislocation, very much evident today. The search for memorial sites and their significance is the theme that unites this trip, with the discovery of "intangible areas" but place over the places
Second draft proposal for optional seat belt anchorage tests in the OECD Codes for protective structure
No full textIt is proposed a new OECD procedure for testing the strenght of the seat belt anchorage fitted on agricultural and forestry tractors. This test is important because the protection of the driver in the event of tractor overturning is obtained not only by means of the ROPS but also by means of the seat belt anchorage. The complete system allow the driver to remain in the safety volume
Testing unusual design ROPS cabs
No full textThe design of new cabs and frames to fit on agricultural and forestry tractors very often shows a round profile, without corners. As the OECD Codes are now it is difficult to decide where to apply the front and rear loads
Redescription of the male of Ixodes festai Rondelli, 1926 (Ixodida: Ixodidae) on specimens from Sardinia (Italy)
No full textIxodes festai Rondelli, 1926 is a poorly known bird parasite tick. Its immature forms have not been described yet, while the adult forms only insufficiently, especially the male. In this note the presence of the male of Ixodes festai for the first time in Sardinia (Italy) is reported and a detailed redescription is provided. Morphometric data as well as photographs performed both with optical and electron microscope (ESEM FEI Quanta 200) are also shown
Round shaped Rolling Over Protective Structures on modern tractors
No full textNewly designed tractor protective structures have often a shape almost round, but the drawings in the OECD ROPS Codes refer only to cabs and frames in the shape of a rectangular box with straight edges and corners. The doubt is over where to apply loads when the ROPS is round in shape, because the test engineers have sometime to interpret the codes instead to fulfill it. The dinamic of the overturning for a round ROPS seems to be a continuous action between the first point of contact with the ground and the final point, that could not be defined as an impact stage because the ROPS does not support a dynamic impact force. Therefore a testing procedure for highly rounded protective structures is advisable for defining the points and the directions of loads application and also for verifying the need of a crushing test
Proposal to revise the seat belt anchorage procedure
No full textThe document is a proposal of revision of the seat belt anchorage testing procedure included into all the ROPS codes. Occupant restraints are considered as part of the ROPS system because an overturn with a ROPS equipped tractor might still be fatal if the tractor operator is thrown outside the clearance zone that the ROPS provides. The revision of the testing procedure deals with the deletion of the performance of the belt buckle, as component of the seat belt and therefore not considered in the tests, and the longitudinal adjusment of the seat during the tests, in order to carry out the test in the worst case of longitudinal adjustment of the seat
Cold weather performance of protective structures in codes 6 and 7
No full textIn the test report of a protective structure fitted on a tractor, tested according to the OECD Codes 3, 4, 8 and 9, when the structure is claimed as resistent to cold weather embrittlement, a paragraph reports the details given by the manufacturer. The content of the document is a proposal to extend this procedure to cover also the OECD codes 6 and 7, in order to have the declaration of cold wether performance also for narrow track tractors
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