124,462 research outputs found
Paoletti Impronte Volume 1: Uomini Illustri
No full text2 volumes ; in 2 cases. Plaster cameos reproducing works of classical and contemporary sculpture, produced by the firm of Paoletti, at Rome, circa 1865. The cameos are organized and mounted in trays housed within 8 faux book bindings, with a tray of cameos underneath both the front and back cover of each volume. Each cameo is numbered in pen and ink, and in turn identified in manuscript on the inside covers of each volume. All volumes bound in quarter vellum, with green boards. The title Paoletti impronte is gilt-stamped on a red morocco title label at the head of the spine. On a similar label at the foot of each spine, a title for the contents of the volume is stamped in gilt; the contents are as follows: Uomini illustri ; Musei Diversi. Plaster cameos such as these were popular souvenirs for British travelers on the Grand Tour of the continent. As in the present set, they were frequently mounted in faux book bindings. Paoletti begs to inform the public that he has arranged a collection of impressions .. of many of the works in sculpture executed by distinguished artists, whose works are described by the Count Hawks le Grice in the above interesting and instructive \u27Walks\u27 ; he has also executed impronte taken from the portraits of the author, of Thorwaldsen, Gibson, Wyatt, Wolff etc., all of which have been executed in cameo by Saulini, a distinguished Roman engraver. The impressions are bound up in 3 vol. 4o, and form an appropriate companion to the Count\u27s work .. --Advertisement on page 269 (volume 1) of Le Grice\u27s Walks through the Studii of the sculptors at Rome (Rome : C. Puccinelli, 1841). The address of Paoletti\u27s shop is noted in volumes 1 and 3 of the present set. Paoletti is listed at 86 Via della Croce in at least two contemporary directories: A handbook of Rome and its environs (London : John Murray, 1864); and, Rome seen in a week (Rome : L. Piale, 1865). Paoletti\u27s studio, during the lifetime of Pietro Paoletti (1801-1847), was previously at 49 Piazza di Spagna, Rome. Bartolomeo Paoletti, an antique dealer and engraver in Rome, began the Paoletti collection of plaster casts of intaglios and cameos between 1760 and 1770. In 1834 his son Pietro took over the business. Volume [1]. Uomini illustri ; volume [2] Musei Diversi. Case edges printed in a marbled pattern. Contents of each volume listed inside cover. Written in pencel inside Uomini Illustri volume Mr Robert R. Taft Transfer from the RISD Museum, Decorative Arts and Design.https://digitalcommons.risd.edu/specialcollections_books_arthistory/1021/thumbnail.jp
Edible wild plants and insects in Western Friuli local Knowledge (Friuli Venezia Giulia, Italy).
No full textABSTRA CT Contrib. Nat. Hist. 12: 461–488.
Folk traditional diets in Western Friuli include wild plants and few invertebrates (i.e.
insects) that are peculiar in the Southern Alps. 156 plants are listed here, ranging
from 200 m to 2200 m a.s.l.. This selection is the result of the research of 64 informants
who contributed with their personal experiences. Recovery of scattered knowledge
is valuable for maintaining and sustaining its use and enhancing a wild biodiversity
base for agroecology, conservation and ecotourism. Pistiç, frita and lidùm
are some of the names used for about 50–60 herbs collected in field margins, hay
meadows, woodlands and the wild, most commonly in spring. In order to be consumed,
most herbs are boiled together and are later sautéed with butter or lard and
garlic. The higher range pre-alpine Carnic slopes have supported seasonal sheep
and cow grazing and summer pastoral communities have traditionally used plants as
well for salads, soups and spices in addition to the boiled-sautéed dish. Furthermore,
herbs have been used as medicinal elixirs and for milk processing. For instance,
Lycopodium annotinum L. was employed to filter milk; Asplenium ruta-muraria L. was
cooked with maize flour to prepare "fregole" a dish eaten with milk or coffee made
from barley. Specifically, collections of these useful alpine plants include: Chenopodium
bonus-henricus L., Aruncus dioicus (Walter) Fernald, Cicerbita alpina (L.)
Wallr., Rumex alpinus L., Carlina acaulis L., Myrrhis odorata (L.) Scop., Ranunculus
hybridus Biria (dry leaves used as pepper), and raw bulbils of Polygonum viviparum
L. Some parts or products of insects were also eaten in these summer meadow areas
("magredi") and hay meadows such as the ingluvies of adult Lepidoptera (Zygaenidae
Zygaena spp. and Ctenuchidae Syntomis spp.). Bees such as Bombus sp. were
exploited for honey content in their ingluvies and their nests were exploited for
honey. The pollen and nectar deposits of Osmia sp. inside snail shells were eaten as
a snack. Of the grasshopper Decticus verrucivorus (L.) at least the prominent femurs
were eaten raw. These local traditional habits need further ethnobiological attention
and nutritional study since the loss of practical experience in collecting these
462 Angelo L. Dreon & Maurizio G. Paoletti
fragments of biodiversity make their memory prone to be lost. The highest number of
plant species found in Friuli is associated to the highest amount of wild plants offered
in this region by specialized restaurants (Osterie) in the Northern regions of Italy
The in-vitro response of pollen germination and tube length to different types of acidity
No full textPollen germination and tube growth are among the most sensitive responses to atmospheric pollution. Both these are inhibited by the acidity of the growth medium. Pollen grains from two species (Pinus cembra L. and Sambucus nigra L.) were germinated in media over a range of pHs (5·0, 4·5, 4·0, 3·5, 3·0 and 2·5) and six types of acidity (H2SO4, HNO3, H2SO4: HNO3 in 1:1, 2:1, 3:1 and 5:1 ratio). Pollen of the Gymnosperm is shown to be more resistant to acidity in the medium. Sulphuric acid alone and the ratio 2:1 with nitric acid are demonstrated to be the more harmful for P. cembra and S. nigra, respectively. The latter species was sensitive to all mixtures, particularly in respect to germination percentage
Experimental evidences of counterion affinity in alginates: the case of nongelling ion Mg2+
No full textThe present contribution aims at testing experimentally the theoretical model previously devised (Donati, I.; Cesaro, A.; Paoletti, S.; Biomacromolecules 2006, 7, 281-287) for the description of the interaction between alginate and nongelling Mg2+ ions. The model, based on an extension of the counterion condensation theory, introduces a contribution of free energy of affinity, (Delta G) over bar (aff,0), which depends on the monomer composition of the polyuronate. In the present work, three different alginates separately mimicking the mannuronan (polyM), the guluronan (polyG), and the polyalternating (polyMG) components of alginate, together with a natural alginate isolated from Laminaria hyperborea (L. hyperborea), were examined. They were treated with Mg2+ ions, and relative variations in scattered light intensity, isothermal calorimetry (Delta H-mix) specific viscosity, and Na-23 NMR longitudinal relaxation rates were monitored with respect to samples at the same ionic strength but containing only Na+ ions. The fraction of condensed magnesium counterions was found to be strongly dependent on alginate composition, increasing along the series mannuronan < polyalternating similar to L. hyperborea < guluronan, thus in good agreement with the theoretical predictions
Encircling of Metal Ions by Tetraaza Macrocycles. Enthalpies of Formation of High and Low-spin Nickel(II) Complexes of 14-Membered Ligands
No full textThe heats of formation of high- and low-spin Ni(II) complexes with 1,4,7,11-tetraazacyclotetradecane (L; chelate ring sequence 5,5,6,6) were detd. calorimetrically in aq. soln. The chelation reactions with L are less exothermic than those with the isomeric 1,4,8,11-tetraaza ligand (chelate ring sequence 5,6,5,6) due to a decrease of the in-plane Ni-N interaction. Insertion of a pyridine ring into the ligand framework makes chelation much less exothermic
Ancora su Vico e gli Ebrei
No full textLa posizione di Vico sugli ebrei è stata oggetto di valutazioni diverse e talora persino opposte. I commentatori di Vico si sono chiesti se nel rapporto fra gli ebrei e le nazioni gentili prevalgano i tratti di omogeneità o quelli di eterogeneità; se le differenze che Vico sottolinea comportino anche un’assoluta separazione oppure se consentano di stabilire una relazione; eventualmente, di che relazione si tratti. Alcuni hanno visto negli ebrei e nella loro storia il modello di un'umanità compiuta; per altri invece gli ebrei e la storia sacra si caratterizzano per la loro marginalità rispetto alla storia delle nazioni ricostruita nella Scienza nuova.
Uno studio della stratificazione delle tre edizioni dell’opera permette di vagliare questa semplice ipotesi: che la diversità di valutazioni di cui il ruolo degli ebrei in Vico è stata oggetto sia dipesa anche dal fatto che Vico stesso non ha sempre espresso la medesima opinione in proposito
Edible Invertebrates among Amazonian Indians: a critical review of Disappearing Knowledge
No full textFor the indigenous populations of Amazonia, invertebrates constitute an important
component of the diet. Information on entomophagy for 39 ethnic groups
(and three other post-Columbian settlers) or about 21.4% of the 182 groups known
in the Amazon Basin is presented here, but utilization of this non-conventional
food resource is surely much more widespread. A database is given of all the
information available for each ethnic group regarding the species included in
the diet, scientific and the ethno name if known, stage of life cycle consumed,
manner of preparation and, when known, host plant. This database lists 209
scientifically identified species. Information on an additional 426 species and
ethno names, with an insecure link to Linnean taxonomy suggest that local knowledge
is very extensive. The database represents not only an easy-to-consult resource,
but also a support for further research. Caterpillars, termites, leafcutter
ants, bees, wasps, and Coleoptera seem to be the more collected items, together
with a few aquatic ones. The most intensively collected are those dependent on
forest leaves and litter, representing in general the higher biomass, so much work
needs to be done for other groups, including caterpillars, aquatic insects, grasshoppers,
snails, and spiders. Knowledge of the relations between indigenous
populations and ecosystems is indeed the base for the preservation of natural
and cultural biodiversity. We are at the beginning of a survey that has to be
expanded
Ipotesi di rischio ambientale per il ritrovamento di fibre di tremolite e Fe-antofillite nel materiale di cava di lava autobrecciata della Sicilia orientale: l’incidenza delle patologie polmonari in quest’area puo’ essere correlata al grande utilizzo del materiale nell’edilizia locale?
No full textWriting with Powerpoint.
No full textIn order to communicate with an audience during a conference‟s talk or a lecture it is becoming increasingly popular to use a fragmented, simplified and shortened form of writing, through a presentation manager like PowerPoint (or Presenter, or Impress and so on).
Such a form of writing concerns texts which generally are not self-sufficient and which will be integrated orally through expansions, comments, explanations, etc. by a presenter. These written texts might have two different forms and designs: one synthetic form for a synchronous face-to-face presentation, and one extended form for an asynchronous, stand-alone presentation (Gold, 2002; Farkas, 2006).
Powerpoint (or ppt) became popular because it is considered a useful tool for communication. Audiences - and students in particular- appreciate it (Bartsch & Cobern, 2003; Blokzijl & Naeff, 2004), because it seems to facilitate and enhance comprehension during lecture listening, because it makes the selection of important ideas explicit, because it highlights hierarchies and connections between ideas, showing the outcome of the speaker re-processing of the material (Paoletti et al. 2008).
The problem that I want to address is that, as a consequence of the program characteristics and of the well known designing guidelines and best practices suggestions (like the famous no more than 6 words x 6 rows), ppt might be very sketchy, schematic even when it is used asyncronically, without the oral integrations of the speaker, when it is read through some University platform or on a social software like Slideshare. Guidelines and even literature on the topic suggest that the written texts should be shorter –every point like a key-word - less cohesive and coherent than a normal text
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