123,383 research outputs found
Dagli orologi solari sferici al mappamondo parallelo - uno strumento didattico
No full textLa sfere di Prosymna e di Matelica possono essere considerate le antenate di oggetti sferici cha dal 1600 in poi, sono stati costruiti in pietra per visualizzare lo spostamento del terminatore sul globo terrestre, in riferimento alle ore solari. In tempi più recenti orologi solari di forma sferica sono stati introdotti in parchi astronomici. Ne vengono mostrate le cratteristiche e la valenza didattica all'interno del Progetto Internazionale Globo Local
Veicoli Solari
No full textDomanda multipla di registrazione per Modello Comunitario “Veicoli Solari” (N. 006387387, depositato il 23.04.2019) relativo ad un prodotto classe ‘Automobili’ e Classificazione di Locarno n. 12.8, con lo scopo di proteggere tramite 21 viste le 3 evoluzioni di forma del veicolo solare (cod. ‘Emilia IV’)
Oscurità dei miti solari
No full textIndaghiamo l'origine e le variazioni della tradizione antichissima dei miti solari che nascondono e celano molti simboli ed archetipi dell'umano, quali l'ambivalenza e la molteplicità psichica e intrapsichica
Solari Aldo E. — Sociologia rural nacional
No full textG A. Solari Aldo E. — Sociologia rural nacional. In: Population, 13ᵉ année, n°4, 1958. p. 735
Globaltest confidence regions and their application to ridge regression
No full textWe construct confidence regions in high dimensions by inverting the globaltest statistics, and use them to choose the tuning parameter for penalized regression. The selected model corresponds to the point in the confidence region of the parameters that minimizes the penalty, making it the least complex model that still has acceptable fit according to the test that defines the confidence region. As the globaltest is particularly powerful in the presence of many weak predictors, it connects well to ridge regression, and we thus focus on ridge penalties in this paper. The confidence region method is quick to calculate, intuitive, and gives decent predictive potential. As a tuning parameter selection method it may even outperform classical methods such as cross-validation in terms of mean squared error of prediction, especially when the signal is weak. We illustrate the method for linear models in simulation study and for Cox models in real gene expression data of breast cancer samples
Stepwise Reduction of Dinitrogen Occurring on a Divanadium Model Compound: A Synthetic, Structural, Magnetic, Electrochemical, and Theoretical Investigation on the [V=N=N=V]n+ [n = 4-6] Based Complexes
No full textThis report details an extensive investigation on vanadium-dinitrogen complexes containing the [V(mu-N-2)V](n+) skeleton with a variable oxidation state of the metal and reduction degree of dinitrogen, n varying from 6 --> 5 --> 4. This skeleton can be associated to alkali cations in ion-separated or ion-pair tight forms. The reaction of [(Mes)(3)V(thf)], 1 [Mes = 2,4,6-Me3C6H2], with Lewis acids [AlPh3, B(C6F5)(3)] removed the THF molecule lending under nitrogen to the formation of the diamagnetic complex [(Mes)(3)V(mu-N-2)V(Mes)(3)], 4. The reaction of 1 with N-2 also occurs under reducing conditions using Na or K metals. As supported by the electrochemical study, the preliminary stage is in both cases the formation of the vanadium(II) desolvated form [V(Mes)(3)](-), 5. The reaction of 5 with N-2 in the case of potassium and in the presence of 1 leads to the compound {[Mes)(3)V(mu-N-2)V(Mes)(3)](-)[K(digly)(3)](+)}, 11, which, depending on the reaction conditions, undergoes a further reduction to [{K(digly)(3)(mu-Mes)(2)(Mes)V}(2)(mu-N-2)], 12 [digly = diethylene glycol dimethyl ether]. Similarly, the reduction of 1 with sodium gave, depending on the workup mode, {[(Mes)(3)V(mu-N-2)V(Mes)(3)](2-)[Na(digly)(2)](2)(+)}, 13, or {[(Mes)(3)V(mu-N-2)(mu-Na)V(Mes)(3)](-)[Na(digly)(2)](+)}, 14. both containing the dianion [(Mes)(3)V(mu-N-2)V(Mes)(3)](2-), 8. Complex 1 releases upon protonation exclusively Nz. while complexes 11-14 release N-2, N2H4, and NH3 in amounts depending on the degree of reduction of the dinitrogen and the structure of the complex. The electrochemical reduction of 1 shed light on the intermediate formation of 5 and its conversion to 8, which was oxidized to the monoanion [(Mes)(3)V(mu-N-2)V(Mes)(3)](-), 7 (which is the precursor of 8 in the chemical reduction). The magnetic studies coupled with the theoretical interpretation are in agreement with the presence of a d(2)-d(2) couple in 4, a d(1)-d(1) in 12-14, and a d(1)-d(0) in 11. This, along with the structural studies on 11-14, suggest a cumulenic structure [V=N=N=V](+n) [n = 5, 4] for 11-14
La lutte des ouvrières de Solari à Udine
No full textDrevet Danièle. La lutte des ouvrières de Solari à Udine. In: Revue d'en face, n°3, 1978. pp. 46-47
Solariola hirtula A. Solari & F. Solari 1923, stat. nov.
No full textSolariola hirtula (A. Solari & F. Solari, 1923) stat. nov. Fig. 2: A–F; Fig. 10–11: B; Fig. 12: (2). Solariola gestroi ssp. hirtula A. Solari & F. Solari, 1923: 51; Luigioni, 1929: 871; Porta, 1932: 57; Lona, 1937: 233; Osella, 1976: 194; Abbazzi et al., 1989: 321; Abbazzi & Osella, 1992: 302; Abbazzi et al., 1995: 22; Osella & Di Marco 1996: 355; Colonnelli, 2003: 46; Osella et al., 2005; Abbazzi & Maggini, 2009: 58; Magnano and Alonso Zarazaga, 2013: 347. Type locality. Calabria, Reggio Calabria, S. Eufemia d’Aspromonte. Diagnosis. A small Solariola (2.55–2.85 mm) with long and curved elytral setae, moderately raised on the elytral surface (angle with elytral surface 5–20 °), slightly curved, elytral punctures very deep almost subquadrate, very short funiculus with last four segments wider than long, abruptly strongly curved triangularly shaped aedeagus apex. Lectotype (here designated). ♂, with the following labels: 1) Calabria, S.ta Eufemia [white, printed], [leg.] Paganetti [white printed]. 2) co Type [white printed] ♂ subsp. hirtula Solari Boll. Soc. E. it. 1923 [white handwritten]. 3) Solariola gestroi hirtula (A. Solari & F. Solari, 1923) LECTOTYPE Baviera des. [red printed]; 4) Solariola hirtula (A. Solari & F. Solari, 1923) stat. nov. 2013 Baviera det. [white printed] (MSNM). Paralectotypes. 12 specimens: 7 ♀♀ with the following labels: 1) Calabria, S.ta Eufemia [white, printed], [leg.] Paganetti [white printed]. 2) co Type [white printed] ♀ subsp. hirtula Solari Boll. Soc. E. it. 1923 [white handwritten]; 3) Solariola gestroi hirtula (A. & F. Solari, 1903) PARALECTOTYPE Baviera des. [red printed]; 4) Solariola hirtula (A. & F. Solari, 1923) stat. nov. 2013 Baviera det.; 5 ♂♂ with the following labels: 1) Calabria, S.ta Eufemia [white, printed], [leg.] Paganetti [white printed]. 2) co Type [white printed] ♀ subsp. hirtula Solari Boll. Soc. E. it. 1923 [white handwritten]. 3) Solariola gestroi hirtula (A. & F. Solari, 1903) PARALECTOTYPE Baviera des. [red printed] 4) Solariola hirtula (A. & F. Solari, 1923) stat. nov. 2013 Baviera det.; (MSNM, GOS); Others Specimens. 120 ♂♂ ♀♀ with the following data: Calabria, S. Eufemia, Piani Aspromonte, 600 m, 7.VI. 1994, Castagno, [leg.] Angelini; same locality, 780 m, 15.X. 1993, lecceta, [leg.] Angelini & Sabella; Calabria, S. Eufemia d'Aspromonte, 28.V. 1989, [leg.] Bellò; same data [leg.] Pierotti; Calabria, Aspromonte, Piani Aspromonte, 26.IV. 2002, [leg.] Angelini; Calabria, S.ta Eufemia, [leg.] Paganetti; Calabria, Aspromonte, Gerace, (RC), 9.XI. 1997 leg. Angelini; Calabria, Calabria, Aspromonte, Gerace, (RC) 650 m, 11.X. 1993, leg. Angelini; Calabria, S. Eufemia, Fiumara Crasta, 630 m, 3.V. 1993, leg. Angelini & Sabella; idem, 600 m, 04.V. 1993; Calabria, S. Alessio in Aspromonte, 740 m, 2.V. 1993, leg. Angelini & Sabella; Calabria, S. Luca Strada per Santuario Polsi, 13.X. 1993, leg. Angelini & Sabella; Cimina, 12.X. 1993, leg. Angelini & Sabella; Calabria, Antonimina, 12.X. 1993, leg. Angelini & Sabella; (MSNM, GOS, MSNF, DEI, CBA, ECO, CBE). Lectotype description. Body length 2.51 mm, maximum width of elytra 0.75 mm. Rostrum confusedly and slightly wrinkled, 1.08 wider than long, with broad rostral furrow, subparallel raised rostral carinae slightly arched as to be closest at the middle. Underside of rostrum densely covered with whitish-yellowish spatulate setae, also partially visible around eyes. Antennae with scape more than 5 times longer than wide, slightly curved on proximal third, regularly thickened from base to apex which is curved at basal third, funicle less than 7 times longer than wide, segment 1 of funicle clavate and more than twice longer than wide, second shorter but still obviously longer than wide, 3 to 7 subquadrate, all wider than long, seventh the broadest (width/length ratio 1.19) and about as wide as the first; club oval, 0.54 as wide as long, three-segmented and densely covered with short setae. Prothorax nearly as long as wide, strongly convex, widest slightly before the middle, disc strongly and irregularly sculptured by large deep punctures merged with smaller shallower ones bearing a long recumbent seta, interspaces between punctures matte, microreticulate, the centripetal setae inserted in smaller punctures on average less than 3 times longer than the average diameter of the larger points (average length 0.07 mm), strongly inclined. Elytra oblong elongate, oval, narrower at base than maximum width of prothorax, twice longer than their overall width (width/ length ratio 0.50), subparallel sides regularly convergent to apex, scarcely and very regularly curved, maximum width at mid length, narrowing apically. Interstriae raised, clearly demarcated by points of striae, with small points whose number is lower than that of the points of striae, each bearing a fairly long (average length 0.07 mm) laterally flattened seta almost curved and slihgtly raised on elytral surface (angle with elytral surface 5–20 °), some of those setae on elytral apex spatulate and recumbent on elytral surface. Aedeagus slighly curved, sclerotisation of sides broadened in basal half, sides parallel from base to mid length, with sides convergent medially and shortly subsinuate at anterior third, with abruptly strongly curved triangularly shaped apex; lamella drop-shaped, with partially covered sides, centrally raised. Female genitalia and variabilty. Spermatheca with nodulus not broadened and long cornu. Other specimens differ from lectotype only slightly for size and for the normal differences found in ♀♀: elytra not distinctly more stubby and with sides very slightly arched, inner margin of tibiae more weakly bisinuate, anterior tibiae not curved inwards at apex. TL SL SW FL FW CL CW PL PW PW EL EW EW PS ES --- --- PL EL ♂ lectotype 2.53 0.4 0.08 0.36 0.06 0.21 0.11 0.607 0.541 0.90 1.51 0.77 0.51 0.07 0.07 Distribution. Known only from the type locality (Fig. 12). Affinities. Described as a subspecies of S. gestroi, this species is distinguished by different shape of the apex of aedeagus, sharper and not abruptly strongly curved in S. gestroi (Fig. 1 F), the very short funiculus, the much more raised setae on elytral intervals, characters already pointed out by Solari & Solari (1923) in the original description. Solariola hirtula stat. nov. differs from S. fraterna n. sp. by the pronotal shape and very short and compact funiculus. Ecology. Specimens were collected sifting leaves in a mixed forest of Castanea sativa L. and Quercus ilex L.Published as part of Baviera, Cosimo, 2015, A review of the genus Solariola Flach, 1908 (Coleoptera: Curculionidae: Entiminae, Peritelini), pp. 401-430 in Zootaxa 3920 (3) on pages 408-410, DOI: 10.11646/zootaxa.3920.3.1, http://zenodo.org/record/24075
Collective Learning: A System Framework and Some Evidence from Two Local Systems
No full textUniversita' di Padova, Discussion paper n.27/200
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