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Lensing voids with peak statistics in massive neutrino cosmologies
Get PDFCosmic voids are under-dense regions of the Mpc scale Universe and fundamental components of the Cosmic Web,
that describes the spatial distribution of matter on large-scales.
In this work we present for the first time in literature the analysis of cosmic voids
obtained combining the set of DEMNUni cosmological simulations and the lensing maps obtained
via direct ray-tracing across their dark matter distribution, with a 2D tunnel void finding algorithm
that identifies voids in lensing convergence maps. We use the peak statistics for the identification of lensing voids:
peaks of the convergence field trace voids in this work. We analyze the properties of cosmic voids
from lensing convergence maps in two cosmologies: the first one with massless neutrinos and the second
one with massive neutrinos (the sum of the masses of the three active species is fixed a Mnu=0.16 eV).
We study the properties of lensing voids in these two cosmologies for three probes: CMB-lensing,
weak lensing with sources located at z=2, and weak lensing with Euclid photometric redshift distribution of the sources.
Furthermore we analyse their evolution with redshift, considering partial CMB-lensing maps in different
redshift ranges
il Jobs Act e la sentenza n. 194/2018: una controriforma?
No full textAnalisi della sentenza 149/2018 della Corte Costituzionale, la quale ha stabilito l'illegittimità costituzionale dell'art.3 comma 1 d.lgs. 23/2015. L'elaborato cerca inoltre di stabilire se la sentenza 149/2018 possa considerarsi o meno una controriforma alla riforma nota come "Jobs Act"
Lifetimes measurements in neutron-deficient 105In and 104Cd isotopes with the plunger technique
Get PDFIn order to extend our information on absolute transition probabilities in the 100Sn region, the lifetimes of the neutron-deficient 105In, 104Cd isotopes have been investigated with the coincidence Recoil Distance Doppler Shift (RDDS) technique following the fusion evaporation reaction 50Cr + 58Ni. The identification of the reaction products was obtained on an event-by-event basis using the Si detector array EUCLIDES. In coincidence with EUCLIDES, γ rays were detected by the GALILEO spectrometer.
The experimental method was validated by remeasuring the known lifetime of the lowest-lying states in 104Cd and 105In. The limitations of the Differential Decay Curve Method and Decay Curve Method were analytically illustrated. Five lifetimes in the ground state band (GSB) of 105In and four lifetimes in 104Cd with drastically reduced errors were deduced using the plunger technique. The results are compared with the values adopted in the literature. The lifetime of the 12+ state of 104Cd was measured for the first time.
In addition, the measured lifetimes enabled the assessments of the multipolarities of the γ rays depopulating the states of interest. Information on electromagnetic transition strengths were deduced for the γ-ray transitions from the 17/2+ up to 25/2+ states in 105In. In the case of 104Cd, B(E2) strengths were extracted for the lowest-lying 2+ and 4+ states and compared with earlier results of 102Cd and 106Cd to indicate the robust Z = 50 shell closure. While the B(M1) strengths for the 11+ and 12+ states were deduced in order to test the possibility of magnetic rotation in this near spherical nucleus
Diritto dei lavoratori extracomunitari alla sicurezza sociale in Europa e in Italia: la questione dei bonus bebè e degli assegni al nucleo familiare
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Petrology and melt inclusion study of lower crustal xenoliths from Mercaderes - Rio Mayo, Colombia.
No full textKnowledge management: come gestire e condividere la conoscenza all'interno dell'organizzazione
Get PDFAllometric scaling in biological and ecological systems
Get PDFSeveral biological variables (such as lifespan, metabolic rate, biomass production rate) were observed to depend on body mass through a simple power law, a phenomenon known as allometric scaling. Despite the bewildering diversity of living organisms, these allometric relations are typically found to hold over a range of masses spanning roughly 20 orders of magnitude. The mot famous allometric scaling law is probably Kleiber’s law, which states that the metabolic rate scales as body mass to the power 3/4. In this work, after presenting some empirical evidence of allometric scaling, I discuss some consequences of Kleiber’s law both at a level of individual organisms and whole ecosystems, in particular for forest communities. Also, a recently proposed model of oxygen consumption for in-vitro cell cultures, which aims to derive an allometric scaling relation for such constructs, is presented and discussed