Il Nuovo Cimento C
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Các bài báo tiêu biểu
Theoretical and experimental power spectra of neutron monitor time series in 1978
Tập 3 Số 3 - Trang 267-272 - 1980
A comprehensive model for the spectral analysis of neutron monitor data is
presented. The contributions to the power spectrum include scintillations in the
interplanetary magnetic field caused by cosmic-ray diffusion along and
perpendicularly to the field and Forbush-decrease effects. The effects of the
Earth's rotation and of nonlinear interactions between particles and fields are
taken into acco...
Evidence of internal gravity waves in the lower thermosphere at midlatitudes
Tập 4 Số 1 - Trang 1-25 - 1981
Wind measurements were made by the CNR Meteor Radar Station at Budrio (45°N,
12°E) in the April–September 1978 period in order to emphasize the role of
internal gravity (IG) waves in the lower thermosphere ((80÷110) km). After
briefly describing the basic properties of these waves, we determine some of
their characteristics using both the conventional spectral-analysis methods and
alternatively, f...
The «lugo» fireball of January 19, 1993
Tập 16 Số 4 - Trang 463-471 - 1993
Observational data and the theory of the interaction of meteoroids with the
Earth’s atmosphere enable us to characterize the spectacular fireball which was
observed to cross Northern Italy from SE to NW on January 19, 1993, ending at
about 00∶33 h UT with an explosion approximately over the town of Lugo di
Romagna. For estimated visual magnitudesM v=−22⋎−25 at the peak of the light
curve correspon...
Choice of optimal orientation of one or two cylindrical gravitational antennas
Tập 3 Số 4 - Trang 420-435 - 1980
A discussion of the optimal orientation of a cilindrical resonant antenna (CRA)
is presented for the detection of unpolarized gravitational radiation emitted
from sources located in a preassigned region of the sky. The same problem is
treated for two CRAs operating in coincidence by a qualitative procedure. In the
last section the distribution and the characteristics of nearby galaxies are
briefly...
The Brera Tower air quality monitoring station
Tập 11 Số 5 - Trang 629-642 - 1988
The characteristics of the air quality monitoring station of Brera Tower are
described. The station is focused on the study of air pollution in the urban
area and on the aerosol chemistry and reactivity in the atmosphere. The
influence of meteorological parameters is also taken into account. Results about
the concentration, the chemical composition and the size distribution of
suspended particulat...
Experimental research on ball lightning
Tập 13 Số 4 - Trang 761-768 - 1990
Experiments on producing ball lightning were made with discharge in flammable
gas and/or aerosol. A long lifetime (2 s) ball lightning was observed in 2.7%
ethane and 100 cm3 cotton fibers, and in 1.5% methane and 1.9% ethane.
Solar activity and El Niño: the auroral connection
Tập 12 Số 2 - Trang 223-230 - 1989
The occurrence of events El Niño is studied in relation to the periods during
which the time series of visible aurorae show local maxima. A significant
correlation is found between the distribution of the data around that maximum,
suggesting a connection between the phenomenon of El Niño and the solar activity
which gives rise to aurorae. We interpret the results in terms of a possible
change of t...
Long-distance drifting of ionization electrons in liquid and solid argon
Tập 9 Số 2 - Trang 621-635 - 1986
A study of ionization electron drifting long distances in liquid and solid argon
was carried out with a 10 cm gridded ionization chamber, operated with electric
fields between 10 V/cm and 2 kV/cm. A detailed analysis of the ionization pulse
shape was performed with a FADC readout, yielding information on both the degree
of purity of the liquid and the electron drift velocity. Argon with an impurit...
A propos des formules de Sutton
Tập 1 Số 5 - Trang 389-394 - 1978
The establishment of the fundamental Sutton's formula is criticized; this
formula is recovered by a more correct mathematical reasoning, and generalized.
Applications are only evoked. Si critica l'impostazione della formula
fondamentale di Sutton; si ricupera questa formula con un ragionamento
matematico più corretto e la si generalizza. Alle applicazioni si accenna solo.
Критикуется вывод фундаме...
Diffuse galactic and extragalactic radiation in the far infra-red
Tập 8 Số 4 - Trang 353-367 - 1985
We present the results of a balloon flight devoted to the observation of the
diffuse sky radiation in the wave-length region (150÷400) and (350÷3000) μm, at
angular scales larger than six degrees. Observations of dust emission and
distribution are discussed.