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Items 4748-4767 di 7741

Observationally based analysis of land-atmosphere coupling

Alessandri, A.; De Felice, M. (Copernicus GmbH, 2016)

The temporal variance of soil moisture, vegetation and evapotranspiration over land has been recognized to be strongly connected to the temporal variance of precipitation. However, the feedbacks and couplings between these ...
Observation and Control of Laser-Enabled Auger Decay

Giannessi, L. (American Physical Society, 2017)

Single-photon laser-enabled Auger decay (spLEAD) is predicted theoretically [B. Cooper and V. Averbukh, Phys. Rev. Lett. 111, 083004 (2013)PRLTAO0031-900710.1103/PhysRevLett.111.083004] and here we report its first ...
Observation and mitigation of parasitic effects of edge plasma by higher operating frequency in LHCD experiments in EAST

Castaldo, C.; Cesario, R.; Tuccillo, A.A.; Ceccuzzi, S.; Napoli, F.; Cardinali, A. (European Physical Society (EPS), 2017)

The effect of LH (lower hybrid) wave frequency on lower hybrid current drive (LHCD) characteristics has been studied on EAST for the first time with two different frequencies (2.45 and 4.6 GHz), showing that higher frequency ...
Observation of polar stratospheric clouds over McMurdo (77.85°S, 166.67°E) (2006-2010)

Di Donfrancesco, G. (2014)

Polar stratospheric clouds (PSCs) have been observed in the Antarctic winter from 2006 to 2010 at the Antarctic base of McMurdo Station using a newly developed Rayleigh lidar. Total backscatter ratio and volume depolarization ...
Observation of short time-scale spectral emissions at millimeter wavelengths with the new CTS diagnostic on the FTU tokamak

D'Arcangelo, O.; Belli, F.; Calabrò, G.; Cocilovo, V.; Mazzotta, C.; Ramogida, G. (Institute of Physics Publishing, 2017)

On the FTU tokamak, the collective Thomson scattering (CTS) diagnostic was renewed for investigating the possible excitation of parametric decay instabilities (PDI) by electron cyclotron (EC) or CTS probe beams in presence ...
Observation of time-domain modulation of free-electron-laser pulses by multipeaked electron-energy spectrum

Artioli, M.; Ciocci, F.; Dattoli, G.; Giannessi, L.; Petralia, A.; Quattromini, M.; Ronsivalle, C.; Sabia, E. (2013)

We present the experimental demonstration of a new scheme for the generation of ultrashort pulse trains based on free-electron-laser (FEL) emission from a multipeaked electron energy distribution. Two electron beamlets ...
Observation of zero current density in the core of JET discharges with lower hybrid heating and current drive

DeAngelis, R. (2001)

Simultaneous current ramping and application of lower hybrid heating and current drive (LHCD) have produced a region with zero current density within measurement errors in the core (r/a ≤ 0.2) of JET tokamak optimized shear ...
Observations of nanoscale properties of ZnO pillars subject to compression

Rinaldi, A. (Institute of Electrical and Electronics Engineers Inc., 2015)

Zinc Oxide (ZnO) nanoscale nanowires (NW) and pillars exhibit substantial size-effects in mechanical properties as a function of diameter D, which enables their exploitation for nanotechnology purposes. Both elastic (i.e. ...
Observations of surface radiation and stratospheric processes at Thule air base, Greenland, during the IPY

di Sarra, A.; Di Biagio, C. (2014)

Ground-based measurements of atmospheric parameters have been carried out for more than 20 years at the Network for the Detection of Atmospheric Composition Change (NDACC) station at Thule Air Base (76.5°N, 68.8°W), on the ...
Observed and modeled global ocean turbulence regimes as deduced from surface trajectory data

Nilsson, J.A.U.; Ruti, P.M (2013)

A large-scale tool for systematic analyses of the dispersal and turbulent properties of ocean currents and the subsequent separation of dynamical regimes according to the prevailing trajectories taxonomy in a certain area ...
Observed influence of liquid cloud microphysical properties on ultraviolet surface radiation

Di Sarra, A.; Meloni, D.; Pace, G. (2014)

Measurements of different UV quantities (UV index, ozone photolysis rates, global and diffuse irradiances, and actinic flux spectra) and cloud properties were collected during a field campaign carried out in Southern Italy ...
Obsidian use in the mosaic of the St. Juvenal church, Narni (Italy): Chemical characterization and origin

Moioli, P.; Rosada, A.; Seccaroni, C. (2013)

Tesserae from the mosaic on the front of the San Giovenale chapel inside the Narni Cathedral were analyzed through non-destructive XRF analysis for the characterization of both colouring matters and opacifiers of the glass ...
Occupational Exposure of the Eye Lens in Interventional Procedures: How to Assess and Manage Radiation Dose

Ferrari, P. (Elsevier B.V., 2016)

Occupational exposure from interventional x-ray procedures is one of the areas in which increased eye lens exposure may occur. Accurate dosimetry is an important element to investigate the correlation of observed radiation ...
Ocean energy exploitation in Italy: ongoing R&D activities. Position paper/September 2017

Sannino, Gianmaria; Pisacane, Giovanna (ENEA, 2017-09)
Offshore floating wind turbines for Mediterranean sites: Preliminary analysis of different concepts

Arsuffi, G. (SAGE Publications Inc., 2016)

An analysis of different floating platform concepts in site conditions typical of the Mediterranean Sea is presented. A tension leg platform, a spar buoy, and a barge support substructures were investigated. In all the ...
Olive oil adulteration sensing by FTIR and Raman spectroscopy

Giubileo, Gianfranco; Puiu, A.; Botti, S.; Tarquini, G.; Nunziante Cesaro, S. (ENEA, 2015-04)

The adulteration of extra virgin olive oil with cheaper oils is a major problem in the olive oil market. In the present work, experimental determinations of low cost vegetable oils content in extra virgin olive oils (EVOO) ...
Omics approaches on fresh-cut lettuce reveal global molecular responses to sodium hypochlorite and peracetic acid treatment

Daddiego, L.; Bianco, L.; Capodicasa, C.; Dalmastri, C.; Del Fiore, A.; De Rossi, P.; Di Carli, M.; Lopez, L.; Paganin, P.; Perrotta, G. (John Wiley and Sons Ltd, 2018)

BACKGROUND: Lettuce is a leafy vegetable that is extensively commercialized as a ready-to-eat product because of its widespread use in human nutrition as salad. It is well known that washing treatments can severely affect ...
On a family of hybrid polynomials

Lorenzutta, S. (2004-12-01)

We introduce a family of hybrid polynomials exhibiting a nature lying between the Hermite and the Laguerre polynomials and study their properties by means of appropriate operational rules
On Algebraic Models of Relativistic Scattering

Kerimov, G. A.; Ventura, A. (2008-10-01)

In this paper we develop an algebraic technique for building relativistic models in the framework of the direct-interaction theories. The interacting mass operator M in the Bakamjian-Thomas construction is related to a ...
On Art and Technology

Diana, M. (1994)

Stress is placed on the importance of studying, analyzing and conserving works of art in order to guarantee their survival for posterity. Technology is not only a cognitive medium of art, but also an inventive and creative ...