Search results for "armo"
showing 10 items of 1364 documents
Raman spectroscopy and high-overtone driven isomerization of glyoxylic acid in solid argon
2013
High-overtone induced chemistry of glyoxylic acid isolated in a low-temperature argon matrix was investigated using Raman spectroscopy. The Raman spectra of two most stable conformers of glyoxylic acid are presented. Upon excitation in high overtone vibrational bands by 532 nm irradiation of the lowest energy conformer most abundant in neat deposited sample, the isomerization of glyoxylic acid was observed. The process most plausible proceeds via absorption into the fifth vibrational overtone state of the OH group or its combination with the torsional vibrational transition. The assignment of the fundamental vibrational spectra was assisted by quantum chemical harmonic and anharmonic vibrat…
Retos para la educación y profesión contable derivados de una armonización mundial liderada por el IASC: la nueva estrategia europea de armonización …
2001
En este trabajo presentamos un juicio crítico de las importantes decisiones que la Comisión Europea ha adoptado a lo largo del pasado año 2000, con miras a implantar definitivamente una estrategia sobre armonización contable. Consideramos que este trabajo es de especial importancia en el contexto de esta Conferencia Internacional, dado que muchos organismos mundiales a favor de la armonización contable, han puesto sus ojos en el modelo de la Unión Europea y en cierto sentido el área económica europea es un peso fundamental para contrarrestar la fuerza de los Estados Unidos, respaldados por sus mercados de capitales, de cara al debate de armonización contable internacional. Dada la actualida…
I nuovi modelli di incriminazione delle organizzazioni criminali all'interno dell'Unione Europea
2013
Il lavoro analizza il percorso di armonizzazione delle incriminazioni in materia di organizzazione criminale nei Paesi dell'Unione Europea. L'impegno ormai risalente degli organi dell'Unione nel contrasto alla criminalità organizzata, come tipica manifestazione di criminalità transnazionale, si è dovuto confrontare con una varietà di risposte nazionali, indicando alcuni modelli comuni da adottare nei singoli ordinamenti per consentire una migliore azione di contrasto. Nonostante le perduranti differenze nelle soluzioni nazionali in materia, lo studio mette in evidenza che gli interventi europei hanno comunque prodotto una serie di modifiche normative in numerosi ordinamenti nazionali degli …
Schede biografiche degli artisti Calogero Barba, Alessandro Bazan, Fiammetta Bonura, Sandro Bracchitta, Mariano Brusca, Carmelo Candiano, Gai Candido…
2015
Le schede sono pubblicate nel catalogo curato da A. Greco "Numero d'oro: armonia del mondo", realizzato in occasione della omonima mostra tenutasi presso l'Archivio Storico Comunale di Palermo dal 16 ottobre al 15 novembre 2015 e promossa dall'Assessorato comunale alla Cultura. La mostra nasce dalla riflessione sul rapporto tra arte e scienza nei secoli e raccoglie cinquanta opere in forma di "libri-progetto-oggetto" che, pur alludendo a un eventuale sviluppo futuro dell’opera, hanno forma compiuta e definizione autonoma sia nella progettualità che nella realizzazione del manufatto. Nella sala Damiani Almeyda esposto anche un significativo nucleo di opere realizzate tra il 1984 e il 2003 da…
Multiple expansions for energy and momenta carried by gravitational waves
2007
We present expressions for the energy, linear momentum and angular momentum carried away from an isolated system by gravitational radiation based on spin-weighted spherical harmonics decomposition of the Weyl scalar $\Psi_4$. We also show that the expressions derived are equivalent to the common expressions obtained when using a framework based on perturbations of a Schwazschild background. The main idea is to collect together all the different expressions in a uniform and consistent way. The formulae presented here are directly applicable to the calculation of the radiated energy, linear momentum and angular momentum starting from the gravitational waveforms which are typically extracted f…
Outer boundary conditions for Einstein's field equations in harmonic coordinates
2007
We analyze Einstein's vacuum field equations in generalized harmonic coordinates on a compact spatial domain with boundaries. We specify a class of boundary conditions which is constraint-preserving and sufficiently general to include recent proposals for reducing the amount of spurious reflections of gravitational radiation. In particular, our class comprises the boundary conditions recently proposed by Kreiss and Winicour, a geometric modification thereof, the freezing-Psi0 boundary condition and the hierarchy of absorbing boundary conditions introduced by Buchman and Sarbach. Using the recent technique developed by Kreiss and Winicour based on an appropriate reduction to a pseudo-differe…
A 0535+26 in the August/September 2005 outburst observed by RXTE and INTEGRAL
2007
In this Letter we present results from INTEGRAL and RXTE observations of the spectral and timing behavior of the High Mass X-ray Binary A 0535+26 during its August/September 2005 normal (type I) outburst with an average flux F(5-100keV)~400mCrab. The search for cyclotron resonance scattering features (fundamental and harmonic) is one major focus of the paper. Our analysis is based on data from INTEGRAL and RXTE Target of Opportunity Observations performed during the outburst. The pulse period is determined. X-ray pulse profiles in different energy ranges are analyzed. The broad band INTEGRAL and RXTE pulse phase averaged X-ray spectra are studied. The evolution of the fundamental cyclotron …
Measurement of the distributions of event-by-event flow harmonics in lead-lead collisions at = 2.76 TeV with the ATLAS detector at the LHC
2013
We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portu…
High-order harmonic generation via bound-bound transitions in an elliptically polarized laser field
2016
We use a simplified five-level system to investigate the high-order harmonic generation (HHG) spectrum emitted by an atom driven by a linearly or elliptically polarized laser field. For this model, the Schrödinger equation is exactly analytically reduced to the system of ordinary differential equations, which is solved numerically. Studying the intensity and polarization of the emitted radiation, we find that under high laser ellipticity the harmonic emission is suppressed. However, the harmonic intensity typically depends nonmonotonously on the laser ellipticity. Such anomalous behavior is very pronounced for the resonant harmonic. We offer an explanation of this behavior based on the incr…
Experimental benchmarking of quantum control in zero-field nuclear magnetic resonance
2017
Zero-field nuclear magnetic resonance (NMR) provides complementary analysis modalities to those of high-field NMR and allows for ultra-high-resolution spectroscopy and measurement of untruncated spin-spin interactions. Unlike for the high-field case, however, universal quantum control -- the ability to perform arbitrary unitary operations -- has not been experimentally demonstrated in zero-field NMR. This is because the Larmor frequency for all spins is identically zero at zero field, making it challenging to individually address different spin species. We realize a composite-pulse technique for arbitrary independent rotations of $^1$H and $^{13}$C spins in a two-spin system. Quantum-inform…