Search results for "gamo"

Karyological data of three Hieracium (Asteraceae) from Sicily and South Italy

2021

Chromosome numbers are given for three endemic Hieracium taxa from Sicily and Campania (Southern Italy). All the examined taxa resulted triploid (2n = 3x = 27). The triploid chromosome set found in the population of H. pallidum from Rocche dell’Argimusco (Peloritani Mountains, NE-Sicily) differs from the previous counts (2n = 4x = 36) reported for the same species from its locus classicus (Mt. Etna).

Un destino paradigmatico. L'ibrido e la necessità del γάμος nel mito di Io

2018

The main stages in the myth of the Argive Io are seduction by Zeus, being guarded by “all-seeing” Argos, her bovine hybridization and mad wanderings from Argos to Egypt, and finally her return to the human form and the birth of Epaphus, Zeus’ son. The agent of Io’s hybridization is either Zeus or Hera. Another aspect of this myth is the rejection of one’s love – also of marriage – for the purpose of preserving a condition of virginity and of “freedom” that is anomalous for women. If it is the case that Hera is the cause of Io’s evils, the girl herself appears as the paradigm of the unavoidable “yoke” of love and marriage for women, especially in Aeschylus’ Suppliant Women. Io shares the sam…

Double β Decay and the Axial Strength

2019

Quenching of the weak axial strength gA is discussed and relations of this quenching to the nuclear matrix elements of double beta decays are highlighted. An analysis of Gamow-Teller transitions in the mass range A = 62 − 142 is presented and its results are compared with those of many previous works. The enhancement of the axial charge is discussed for first-forbidden pseudoscalar β transitions. Higher-forbidden β transitions are introduced and their role in determining the effective value of gA is examined, in particular from the point of view of the β-decay half-lives and the shapes of electron spectra of forbidden non-unique β transitions. peerReviewed

Value of the Axial-Vector Coupling Strength in β and ββ Decays : A Review

2017

In this review the quenching of the weak axial-vector coupling constant, $g_{\rm A}$, is discussed in nuclear $\beta$ and double-$\beta$ decays. On one hand, the nuclear-medium and nuclear many-body effects are separated, and on the other hand the quenching is discussed from the points of view of different many-body methods and different $\beta$-decay and double-$\beta$-decay processes. Both the historical background and the present status are reviewed and contrasted against each other. The theoretical considerations are tied to performed and planned measurements, and possible new measurements are urged, whenever relevant and doable. Relation of the quenching problem to the measurements of …

Assessment of the insecticidal activity of five essential oils used against the subterranean termite Reticulitermes lucifugus (Rossi) (Blattodea, Rhi…

2023

Among Reticulitermes genus the most abundant species living in Italy is Reticulitermes lucifugus Rossi. This termite is very dangerous to wooden structures of artistic heritage and buildings. The traditional control of R. lucifugus is very difficult resulting in negatively impact on the environment, therefore the use of phytochemical, such as essential oils (EOs), could lead to an alternative to synthetic insecticides, with advantages in reducing environmental risks. In this work we investigated the insecticidal activity of EOs of Citrus bergamia Risso, Syzygium aromaticum L., Foeniculum vulgare Mill., Pelargonium odoratissimum L., and Origanum vulgare L. by inhalation against R. lucifugus …

Premio Bergamo d'Architettura 2011: dalle Macerie dell'Economia dei Sogni alla Magnifica Realtà del Possibile

2011

Nell’ultimo ventennio il capitalismo globale si è sempre più staccato dall’economia reale, dalla centralità dell’industria, del lavoro, della produzione di beni. New Economy, finanziarizzazione, terziarizzazione, delocalizzazioni, deregolamentazioni, “soldi per soldi”. Era tutto facile, quasi magico: tanta borsa, poco prodotto. Molti sogni, poca realtà. Ci son rimaste le macerie: un incubo chiamato recessione. Di questo processo ha fatto parte l’architettura, perdendosi in congetture lontane dalla realtà: decostruzioni, Derrida, Teoria del caos, fascino compiacente per l’estetica delle megalopoli e dei non-luoghi periferici. In questo ventennio Bergamo, territorio in cui l’industria ha avut…

Chemical composition of the essential oil of Cyanus adscendens (Bartl.) Soják and C. orbelicus (Velen.) Soják growing wild in Bulgaria, and PCA analy…

2022

Cyanus Mill. genus, belonging to the Asteraceae family, includes more than 50 taxa, mainly growing in Central and Southern Europe, North Africa, Asia Minor, and the Caucasus. Previous investigations on Cyanus taxa have shown that they are rich source of flavonoids and phenolic compounds but, differently from species of genus Centaurea, almost devoid of sesquiterpene lactones. In the present study, the chemical composition of the essential oils from aerial parts of Cyanus adscendens (CA) and C. orbelicus (CO), collected in Bulgaria, and not previously investigated, was evaluated by GC-MS. The main components of CA were α-bergamotene (31.3%), (Z,Z,Z)-9,12,15-octadecatrien-1-ol (14.5%) and cal…

Value of the Axial-Vector Coupling Strength in β and ββ Decays : A Review

2017

Two-neutrino ββ decays and low-lying Gamow-Teller β− strength functions in the mass range A=70–176

2017

We apply the proton-neutron deformed quasiparticle random-phase approximation (pn-dQRPA) to describe the low-lying (E 6 MeV) 1+ Gamow-Teller (GT) strength functions in odd-odd deformed nuclei which participate as intermediate nuclei in two-neutrino double-β-decay (2νββ) transitions within the mass range A = 70–176. In deriving equations of motion we use a single-particle basis with projected angular momentum, provided by the diagonalization of a spherical mean field furnished with a quadrupole-quadrupole interaction. The schematic residual Hamiltonian contains pairing and proton-neutron interaction terms in particle-hole (ph) and particle-particle (pp) channels, with constant strengths. By …

β Decay of 127Cd and Excited States in 127In

2019

A dedicated spectroscopic study of the β decay of 127Cd was conducted at the IGISOL facility at the University of Jyväskylä. Following high-resolution mass separation in a Penning trap, β−γ−γcoincidences were used to considerably extend the decay scheme of 127In. The β-decaying 3/2+ and 11/2− states in 127Cd have been identified with the 127Cd ground state and the 283-keV isomer. Their respective half-lives have been measured to 0.45(128)s and 0.36(4) s. The experimentally observed βfeeding to excited states of 127In and the decay scheme of 127In are discussed in conjunction with large-scale shell-model calculations. peerReviewed