The Tucson revised index of asteroid data     

D. Bender  E. Bowell  C. Chapman  M. Gaffey  T. Gehrels  B. Zellner  D. Morrison  E. Tedesco 《Icarus》1978,33(3):630-631

Attention is called to the availability of the TRIAD computer file, a compilation of all reliable physical parameters for minor planets.  相似文献   

Antioxidant efficiency and detoxification enzymes in spotted dogfish Scyliorhinus canicula     

Stefania Gorbi  David Pellegrini  Sara Tedesco  Francesco Regoli   《Marine environmental research》2004,58(2-5):293

Although elasmobranchs are widely distributed species, commonly found on sandy, gravely or muddy bottoms, several biological aspects of their metabolism still remain poorly investigated. In this work the efficiency of antioxidant system and detoxification enzymes were investigated in the coastal spotted dogfish Scyliorhinus canicula and in the red mullet Mullus barbatus for comparison with a teleost species.Organisms were sampled during a bottom trawl survey and analyzed for the biotransformation activity (EROD), levels of metallothioneins, catalase, glutathione S-transferases and total oxyradical scavenging capacity (TOSC) toward peroxyl radicals and hydroxyl radicals.EROD activity in the elasmobranchs was more than one order of magnitude lower than in the red mullets, while similar levels of metallothioneins were measured in these species. S. canicula showed significantly lower antioxidant enzymes and a more reduced efficiency in neutralizing ^√OH; on the other hand the scavenging capability toward ROO^√ was comparable in S. canicula and M. barbatus.  相似文献   

Report of the IAU/IAG Working Group on cartographic coordinates and rotational elements: 2006     

P. Kenneth Seidelmann  B. A. Archinal  M. F. A’hearn  A. Conrad  G. J. Consolmagno  D. Hestroffer  J. L. Hilton  G. A. Krasinsky  G. Neumann  J. Oberst  P. Stooke  E. F. Tedesco  D. J. Tholen  P. C. Thomas  I. P. Williams 《Celestial Mechanics and Dynamical Astronomy》2007,98(3):155-180

Every three years the IAU/IAG Working Group on Cartographic Coordinates and Rotational Elements revises tables giving the directions of the poles of rotation and the prime meridians of the planets, satellites, minor planets, and comets. This report introduces improved values for the pole and rotation rate of Pluto, Charon, and Phoebe, the pole of Jupiter, the sizes and shapes of Saturn satellites and Charon, and the poles, rotation rates, and sizes of some minor planets and comets. A high precision realization for the pole and rotation rate of the Moon is provided. The expression for the Sun’s rotation has been changed to be consistent with the planets and to account for light travel time  相似文献   

Aquifer vulnerability and potential risk assessment: application to an intensely cultivated and densely populated area in Southern Italy     

Gianluigi Busico  Emilio Cuoco  Maurizio Sirna  Micòl Mastrocicco  Dario Tedesco 《Arabian Journal of Geosciences》2017,10(10):222

The use of indices, describing aquifer vulnerability and the risk of groundwater pollution, is a basic tool for the implementation of a sound water management plan, especially in densely populated and intensely cultivated areas. In this study, the groundwater contamination risk of the Caserta Plain (Southern Italy) was assessed through the integration of hazards defined on the basis of the different land uses, of the intrinsic vulnerability calculated by applying the SINTACS model and of the groundwater value evaluated by considering water wells density. In order to evaluate the evolution of the risk of groundwater pollution, the proposed methods were applied in the study area for both 2001 and 2009. The resulting specific vulnerability (SINTACS-L) and the risk (GRA) maps, created in a GIS environment, were validated by the comparison with the nitrate concentration distribution. The application of the proposed approach to the study area highlighted the strengths and weaknesses of each method and, at the same time, showed that their combination can provide an overall view of the threats posed to groundwater resources by the human activities affecting the territory. Considering both the benefits and the issues of the proposed approach, overall, the groundwater risk map is thought to be a robust tool to support water managers in defining future plans for water resources exploitation and land use.  相似文献   

Fluid geochemistry of the Mondragone hydrothermal systems (southern Italy): water and gas compositions vs. geostructural setting     

Cuoco  Emilio  Minissale  Angelo  Di Leo  Antonella “Magda”  Tamburrino  Stella  Iorio  Marina  Tedesco  Dario 《International Journal of Earth Sciences》2017,106(7):2429-2444

International Journal of Earth Sciences - The geochemistry of natural thermal fluids discharging in the Mondragone Plain has been investigated. Thermal spring emergences are located along the...  相似文献   

Worldwide photometry and lightcurve observations of 1 Ceres during the 1975–1976 apparition     

E.F. Tedesco  R.C. Taylor  J. Drummond  D. Harwood  I. Nickoloff  F. Scaltriti  H.J. Schober  V. Zappala 《Icarus》1983,54(1):23-29

We present 19 lightcurves of asteroid 1 Ceres obtained during a global campaign in 1975–1976. The synodic period is 0.37812 ± 0.00004 day. The mean absolute V magnitude is 3.61 ± 0.03 and the phase coefficient is 0.40 ± 0.001 mag/deg. The U-B and B-V phase coefficients are +0.0015 ± 0.0007 and +0.0006 ± 0.0003 mag/deg, respectively. The colors at zero phase are B-V = +0.70 ± 0.01 and U-B = +0.41 ± 0.01.  相似文献   

Some observations on the ignimbrites,lava domes and lava flows of M. Cimino (Central Italy)     

M. Mittempergher  C. Tedesco 《Bulletin of Volcanology》1963,25(1):343-358

Cimino Volcano, in Northern Latium, is one of the most characteristic centers of the early Quaternary acid post-orogenetic volcanism in Central Italy. Three stages in the volcanic activity are distinguished: extrusion of several lava domes; ignimbrite cruptions; effusion of more or less differentiated lava flows. Ignimbrites, that form a shield of over 300 sq. km, show characters of welding variable with the distance from the source area and, in a single section, with the level in the sheet. Most part of the Cimino volcanics (domes and ignimbrites) have a quartzlatite composition. The olivine-trachyte (selagite) inclusions in the domes and ignimbrites, and the dark quartz-latite to olivine-trachyte lava flows, could be the products of a pneumatolitic differentiation in the various stages of the magmatic cycle.  相似文献   

A TEST OF SIGNIFICANCE FOR PARTIAL LEAST SQUARES REGRESSION   总被引：1，自引：0，他引：1  

IAN N. WAKELING  JEFF J. MORRIS  AFRC Institute of Food Research  Earley Gate  Whiteknights Ro  Reading RG EF  U.K.Zeneca Pharmaceuticals  Mereside  Alderley Park  Macclesfiel  Cheshire SK TG  U.K. 《地理学报(英文版)》1993,(4)

Partial least squares (PLS) regression is a commonly used statistical technique for performingmultivariate calibration, especially in situations where there are more variables than samples. Choosingthe number of factors to include in a model is a decision that all users of PLS must make, but iscomplicated by the large number of empirical tests available. In most instances predictive ability is themost desired property of a PLS model and so interest has centred on making this choice based on aninternal validation process. A popular approach is the calculation of a cross-validated r~2 to gauge howmuch variance in the dependent variable can be explained from leave-one-out predictions. Using MonteCarlo simulations for different sizes of data set, the influence of chance effects on the cross-validationprocess is investigated. The results are presented as tables of critical values which are compared againstthe values of cross-validated r~2 obtained from the user's own data set. This gives a formal test forpredictive ability of a PLS model with a given number of dimensions.  相似文献   

The determination of deep temperatures by means of the CO-CO2-H2-H2O geothermometer: an example using fumaroles in the Campi Flegrei,Italy     

D. Tedesco  J. C. Sabroux 《Bulletin of Volcanology》1987,49(1):381-387

Chromatographic analyses of fumarolic gases, collected in sampling bottles containing an alkaline solution, have been carried out using a thermal conductivity detector and a flame ionization detector, after catalytic conversion of CO and CH₄. The latter method enables the concentration of carbon monoxide to be measured with sufficient accuracy for use in a CO-CO₂-H₂-H₂O geothermometer. Application of this geothermometer to fumaroles in the crater of Solfatara in the Campi Flegrei, Italy, indicates that they are fed from a steam reservoir at 250±15 °C and at 10^–36±2atm of oxygen. On the other hand, the CH₄-CO₂-H₂-H₂O geothermobarometer seems to re-equilibrate at superficial temperatures and cannot be used for infering thermodynamic conditions at depth. Regular sampling of these fumaroles together with a geothermometric interpretation of the gas analyses provides a means of monitoring, with comparative accuracy, the chemical and thermal evolution of the hydrothermal reservoir below the Solfatara crater. Such monitoring would probably detect an increase in temperature at depth and the injection of magmatic gas into the reservoir.  相似文献   

Atmospheric correction of AMSR-E brightness temperatures for dry snow cover mapping     

Tedesco  M. Wang  J.R. 《Geoscience and Remote Sensing Letters, IEEE》2006,3(3):320-324

Differences between the brightness temperatures (spectral gradient) collected by the Advanced Microwave Scanning Radiometer for EOS (AMSR-E) at 18.7 and 36.5 GHz are used to map the snow-covered area (SCA) over a region including the western U.S. The brightness temperatures are corrected to take into account for atmospheric effects by means of a simplified radiative transfer equation whose parameters are stratified using rawinsonde data collected from a few stations. The surface emissivity is estimated from the model, and the brightness temperatures at the surface are computed as the product of the surface temperature and the computed emissivity. The SCA derived from microwave data is compared with that obtained from the Moderate Resolution Imaging Spectroradiometer for both cases of corrected and noncorrected brightness temperatures. The improvement to the SCA retrievals based on the corrected brightness temperatures shows an average value around 7%.  相似文献