TOUGH2Viewer 2.0: A multiplatform tool for fully 3D Voronoi TOUGH grids

The software TOUGH2Viewer 2.0, originally available since 2012, is an enhanced visualization software specifically designed to visualize the results of TOUGH simulations performed using structured and fully unstructured 3D Voronoi grids. 3D Voronoi grids permit a great degree of flexibility when accurate numerical simulations are required. The TOUGH family of simulators represents a set of software well-known worldwide for numerical modeling and simulation for coupled transport of water, vapor, non-condensable gas and heat in porous and fractured media. Nevertheless, TOUGH has no native enhanced pre- and post-processing tools, and several pre- and post-processing tools have been developed. Using TOUGH2Viewer the users can interactively navigate the model, a 3-dimensional virtual environment, by means of a Graphical User Interface (GUI). This new version of TOUGH2viewer allows the editing of numerical models by dedicated GUIs, adding pre-processing capabilities

Uniform Penalty inversion of two-dimensional NMR Relaxation data

The inversion of two-dimensional NMR data is an ill-posed problem related to the numerical computation of the inverse Laplace transform. In this paper we present the 2DUPEN algorithm that extends the Uniform Penalty (UPEN) algorithm [Borgia, Brown, Fantazzini, {\em Journal of Magnetic Resonance}, 1998] to two-dimensional data. The UPEN algorithm, defined for the inversion of one-dimensional NMR relaxation data, uses Tikhonov-like regularization and optionally non-negativity constraints in order to implement locally adapted regularization. In this paper, we analyze the regularization properties of this approach. Moreover, we extend the one-dimensional UPEN algorithm to the two-dimensional case and present an efficient implementation based on the Newton Projection method. Without any a-priori information on the noise norm, 2DUPEN automatically computes the locally adapted regularization parameters and the distribution of the unknown NMR parameters by using variable smoothing. Results of numerical experiments on simulated and real data are presented in order to illustrate the potential of the proposed method in reconstructing peaks and flat regions with the same accuracy

In Defence of Modest Doxasticism About Delusions

Here I reply to the main points raised by the commentators on the arguments put forward in my Delusions and Other Irrational Beliefs (OUP, 2009). My response is aimed at defending a modest doxastic account of clinical delusions, and is articulated in three sections. First, I consider the view that delusions are in-between perceptual and doxastic states, defended by Jacob Hohwy and Vivek Rajan, and the view that delusions are failed attempts at believing or not-quite-beliefs, proposed by Eric Schwitzgebel and Maura Tumulty. Then, I address the relationship between the doxastic account of delusions and the role, nature, and prospects of folk psychology, which is discussed by Dominic Murphy, Keith Frankish, and Maura Tumulty in their contributions. In the final remarks, I turn to the continuity thesis and suggest that, although there are important differences between clinical delusions and non-pathological beliefs, these differences cannot be characterised satisfactorily in epistemic terms. \u

Stability of fermionic Feshbach molecules in a Bose-Fermi mixture

In the wake of successful experiments in Fermi condensates, experimental attention is broadening to study resonant interactions in degenerate Bose-Fermi mixtures. Here we consider the properties and stability of the fermionic molecules that can be created in such a mixture near a Feshbach resonance (FR). To do this, we consider the two-body scattering matrix in the many-body environment, and assess its complex poles. The stability properties of these molecules strongly depend on their centre-of-mass motion, because they must satisfy Fermi statistics. At low centre-of-mass momenta the molecules are more stable than in the absence of the environment (due to Pauli-blocking effects), while at high centre-of-mass momenta nontrivial many body effects render them somewhat less stable

Measurement of the intrinsic damping constant in individual nanodisks of YIG and YIG{\textbar}Pt

We report on an experimental study on the spin-waves relaxation rate in two series of nanodisks of diameter $\phi=$300, 500 and 700~nm, patterned out of two systems: a 20~nm thick yttrium iron garnet (YIG) film grown by pulsed laser deposition either bare or covered by 13~nm of Pt. Using a magnetic resonance force microscope, we measure precisely the ferromagnetic resonance linewidth of each individual YIG and YIG{\textbar}Pt nanodisks. We find that the linewidth in the nanostructure is sensibly smaller than the one measured in the extended film. Analysis of the frequency dependence of the spectral linewidth indicates that the improvement is principally due to the suppression of the inhomogeneous part of the broadening due to geometrical confinement, suggesting that only the homogeneous broadening contributes to the linewidth of the nanostructure. For the bare YIG nano-disks, the broadening is associated to a damping constant $\alpha = 4 \cdot 10^{-4}$. A 3 fold increase of the linewidth is observed for the series with Pt cap layer, attributed to the spin pumping effect. The measured enhancement allows to extract the spin mixing conductance found to be $G_{\uparrow \downarrow}= 1.55 \cdot 10^{14}~ \Omega^{-1}\text{m}^{-2}$ for our YIG(20nm){\textbar}Pt interface, thus opening large opportunities for the design of YIG based nanostructures with optimized magnetic losses.Comment: 4 pages, 3 figure

Dipolar Bose-Einstein condensates with dipole-dependent scattering length

We consider a Bose-Einstein condensate of polar molecules in a harmonic trap, where the effective dipole may be tuned by an external field. We demonstrate that taking into account the dependence of the scattering length on the dipole moment is essential to reproducing the correct energies and for predicting the stability of the condensate. We do this by comparing Gross-Pitaevskii calculations with diffusion Monte Carlo calculations. We find very good agreement between the results obtained by these two approaches once the dipole dependence of the scattering length is taken into account. We also examine the behavior of the condensate in non-isotropic traps

Parallel pumping of magnetic vortex gyrations in spin-torque nano-oscillators

We experimentally demonstrate that large magnetic vortex oscillations can be parametrically excited in a magnetic tunnel junction by the injection of radio-frequency (rf) currents at twice the natural frequency of the gyrotropic vortex core motion. The mechanism of excitation is based on the parallel pumping of vortex motion by the rf orthoradial field generated by the injected current. Theoretical analysis shows that experimental results can be interpreted as the manifestation of parametric amplification when rf current is small, and of parametric instability when rf current is above a certain threshold. By taking into account the energy nonlinearities, we succeed to describe the amplitude saturation of vortex oscillations as well as the coexistence of stable regimes.Comment: Submitted to Phys. Rev. Let

THE LATE EARLY CRETACEOUS TRANSGRESSION ON THE LATERITES IN VOURINOS AND VERMION MASSIFS (WESTERN MACEDONIA, GREECE)

Τρεις στρωματογραφικές τομές, από τον ανατολικό Βούρινο (περιοχή Ροδιανής) και το ανατολικό Βέρμιο, απεκάλυψαν την ίδια ηλικία των φαινομένων που σχετίζονται με τις λατεριτιώσεις που προσέβαλαν το σερπεντινιωμένο οφιολιθικό σύμπλεγμα μετά την τοποθέτηση του πάνω στην πελαγονική επικράτεια. Στις τομές παρατηρούνται τεμάχη σερπεντινιωμένων χαρτσβουργιτών που φέρουν λατεριτικές ασυμφωνίες στην κορυφή, καλυπτόμενες από επικλυσιγενείς υστερο-ηωκρητιδικούς νηριτικούς ασβεστόλιθους. Κοντά στο χωρίο Κτένι (περιοχή Ροδιανής), ένας ορίζοντας λατερίτη, που κάθεται στην κορυφή σερπεντινιτών, καλύπτεται από επικλυσιγενείς νηριτικούς ασβεστόλιθους με Salpingoporella urladanasi, η οποία προσδιορίζει ηλικία Βαρρέμιο - Άλβιο, ακολουθούμενους από ασβεστόλιθους με Orbitolinidae. Στη θέση Τσιμοδιά (ΒΒΔ της προηγουμένης), ο λατεριτικός ορίζοντας, που κάθεται πάνω σε καρστικοποιημένους ανωιουρασικούς υφαλογενείς ασβεστόλιθους (οι οποίοι είναι το κορυφαίο μέλος ενός σώματος ανθρακικής πλατφόρμας που κάθεται τεκτονικός πάνω στους οφιολίθους), καλύπτεται επικλυσιγενώς από ένα σιδηρούχο πισσολιθικό στρωματίδιο και ασβεστόλιθους του Απτίου, που έχουν υφή wackes tone-muds tone και επίσης περιέχουν Salpingoporella urladanasi, ακολουθούμενους από ασβεστόλιθους με Orbitolina του Κενομανίου. Τέλος, η τρίτη εξετασθείσα τοποθεσία, αρκετά ΒΑ των προηγουμένων, βρίσκεται στις ανατολικές παρυφές του Βερμίου και συγκεκριμένα στα ΒΔ του χωρίου Κουμαριά. Εκεί, ομοίως παρατηρείται ότι τα λατεριτιωμένα τεμάχη σερπεντινιτών καλύπτονται επικλυσιγενώς από νηριτικούς ασβεστόλιθους με Salpingoporella urladanasi, που περνούν προς τα πάνω σε ανακρυσταλλωμένους ανωκρητιδικούς ασβεστόλιθους με Orbitolinidae και θραύσματα ρουδιστών και, εν τέλει, στο φλύσχη. Οι παραπάνω χαρακτήρες οδηγούν στο συμπέρασμα ότι η ανάδυση και η επακόλουθη λατεριτίωση των επωθημένων οφιολίθων του Βούρινου και του Βερμίου, στη βόρεια πελαγονική επικράτεια, που έλαβε χώρα αρχής γενομένης από το ύστατο Ιουρασικό, ακολουθήθηκε από μια θαλάσσια επίκλυση που άρχισε μέσα στο διάστημα Βαρρέμιο - Άλβιο, σε συνθήκες ανθρακικής πλατφόρμας, αρχικώς κλειστής και υφάλμυρης, που σημαδεύονται από την παρουσία του φύκους Salpingoporella urladanasi, ακολουθούμενες από κανονικής αλμυρότητας συνθήκες ανθρακικής πλατφόρμας. Η νηριτική ιζηματογένεση έμεινε ακλόνητη μέχρι το κατώτερο Κενομάνιο. Στη συνέχεια, μία βάθυνση, νωρίτερα στο Βούρινο και αργότερα στο Βέρμιο, οδήγησε στην απόθεση πελαγικών και τουρβιδιτικών ασβεστόλιθων και στη συνέχεια του φλύσχη.Three stratigraphical sections from eastern Vourinos (Rhodiani area) to eastern Vermion massifs revealed the same age of the latérite events affecting the serpentinized ophiolite complex after its emplacement on the Pelagonian domain. All of them consist from their base upwards of serpentinized harzburgite slivers with lateritic unconformities on the top, followed by transgressive upper Lower Cretaceous neritic limestones. At Kteni locality (Rhodiani area), a laterite horizon, lying on top of serpentinites, is covered by transgressive neritic limestones with Salpingoporella urladanasi, assigning a Barremian - Albian age, followed by Orbitolinidae limestones. At Tsimodia locality (NNW to the previous), the latente horizon, lying on karstified Upper Jurassic reef limestones (which are the top member of a carbonate platform body tectonically lying on the ophiolites), is trans gres s ively overlain by iron-rich pisolith levels and Aptian limestones of the wackes tone-muds tone type, also containing Salpingoporella urladanasi, followed by Cenomanian Orbitolina limestones. Finally, the third examined locality, further north-eastward to the previous, is situated at the eastern slopes of Vermion massif and more precisely at the NWpart of Koumaria village. There, it can again be observed that the lateritized serpentinite slivers are overlain transgress ively by neritic limestones with Salpingoporella urladanasi, passing upwards into Upper Cretaceous recrystallized limestones with Orbitolinidae and rudist fragments and, finally, toflysch deposition. These features allow to recognize that the emersion and the consecutive lateritization of the thrust-emplaced ophiolites in Vourinos and Vermion massifs in the northern Pelagonian domain, starting from the Latest Jurassic, was followed by a marine transgression beginning from the Barremian - Albian, firstly under restricted and brackish carbonate platform conditions, marked by the presence of the dasycladalean alga Salpingoporella urladanasi, followed by normal salinity carbonate platform conditions. The neritic sedimentation was stable until the Early Cenomanian. Subsequently, a deepening, earlier at Vourinos and later at Vermion, resulted in deposition of pelagic and turbiditic carbonates and then offlysch