Search results for "ground"
showing 10 items of 2432 documents
Le monastère Saint-Pierre d'Osor (île de Cres) : sixième campagne d'études archéologiques
2012
In the 2011 campaign the southern and central apses, as well as the southern nave of the abbey church of St Peter, together with its immediate surroundings were excavated. The primary analysis of the eastern part of the Venetian town wall was undertaken as well. The geophysical survey of the western and south-eastern parts of the complex has equally been continued. The initial results allow us to present a phasing of the early Romanesque church, possibly preceded by two earlier churches, as well as to complete the ground plan thanks to the discovery of the former bell-tower, containing a funerary room (maybe a chapel) in its ground level. Furthermore, the monastic topography was clarified b…
The high precision measurement of the 144Ce activity in the SOX experiment
2015
International audience; In order to perform a resolutive measurement to clarify the neutrino anomalies and to observe possible short distance neutrino oscillations, the SOX (Short distance neutrino Oscillations with BoreXino) experiment is under construction. In the first phase, a 100 kCi (144)Ce-(144)Pr antineutrino source will be placed under the Borexino detector at the Laboratori Nazionali del Gran Sasso (LNGS), in center of Italy, and the rate measurement of the antineutrino events, observed by the very low radioactive background Borexino detector, will be compared with the high precision (< 1%) activity measurement performed by two calorimeters. The source will be embedded in a 19 mm …
Muon multiplicities measured using an underground cosmic-ray array
2016
EMMA (Experiment with Multi-Muon Array) is an underground detector array designed for cosmic-ray composition studies around the knee energy (or similar to 1 - 10 PeV). It operates at the shallow depth in the Pyhasalmi mine, Finland. The array consists of eleven independent detector stations similar to 15 m(2) each. Currently seven stations are connected to the DAQ and the rest will be connected within the next few months. EMMA will determine the multiplicity, the lateral density distribution and the arrival direction of high-energy muons event by event. The preliminary estimates concerning its performance together with an example of measured muon multiplicities are presented.
Study of exotic decay of Cs isotope close to the proton drip line
2020
6 pags., 6 figs. -- 27th International Nuclear Physics Conference (INPC2019) 29 July - 2 August 2019, Glasgow, UK
Bourgeois Women and the Question of Divorce in Finland in the Late 19th and Early 20th Centuries
2017
This article explores perceptions and actions of Finnish upper-middle-class women with regard to divorce in the late 19th century and early 20th century. Divorce was discussed in the periodicals of bourgeois women’s associations and later in Finnish Parliament, in which several leading figures of the bourgeois women’s associations were elected as members from 1907 onwards. Compared to other issues related to marriage and its legislation, divorce was not an especially important question for bourgeois women, but a tool to promote other issues. Women writers demanded drunkenness and violence as new grounds for divorce, and proposed that loveless marriages should be made possible to dissolve. M…
An accurate optical technique for measuring the nuclear polarisation of 3He gas
2010
12 pages; International audience; In the metastability exchange optical pumping cells of our on-site production unit and of our other experimental set-ups, we use a light absorption technique to measure the 3He nuclear polarisation. It involves weak probe beams at 1083 nm, that are either perpendicular or parallel to the magnetic field and cell axis, with suitable light polarisations. When metastability exchange collisions control the populations of the sublevels in the 23S state, absolute values of the 3He ground state nuclear polarisation are directly inferred from the ratio of the absorption rates measured for these probe beams. Our report focuses on the transverse detection scheme for w…
Overview and accomplishments of the Borexino experiment
2015
International audience; The Borexino experiment is running at the Laboratori del Gran Sasso in Italy since 2007. Its technical distinctive feature is the unprecedented ultralow background of the inner scintillating core, which is the basis of the outstanding achievements accumulated by the experiment. In this talk, after recalling the main features of the detector, the impressive solar data gathered so far by the experiment will be summarized, with special emphasis to the most recent and prominent result concerning the detection of the fundamental pp solar neutrino flux, which is the direct probe of the engine mechanism powering our star. Such a milestone measurement puts Borexino in the un…
Thermal lens spectrometry in biochemical analysis.
1994
The photothermal spectroscopic techniques, with special emphasis on the thermal lens spectrometry (TLS), are introduced to the non-specialist in laser spectroscopy. The following topics are treated on an elementary basis: fundamentals and analytical characteristics, instrumentation, selectivity and multi-wavelength capability, the models describing the signal-concentration relationship, the sensitivity, background noise and limits of detection, the influence of light scattering and flow. Applications related to the fields of clinical and biochemical analysis and organic pollution are given. The thermal lens circular dichroism and the infrared TLS are also briefly outlined.
Cluster Expansions and Variational Monte Carlo in Medium Light Nuclei
1993
The B1 Brink-Boeker effective interaction is used to compute variational upper bounds for the ground state energy of nuclei from 16 O up to 40 Ca. The calculations are carried out by means of the Variational Monte Carlo method and with a multiplicative cluster expansion up to fourth order.
Application of SINTACS method to the aquifers of Piana di Palermo, Siciliy,Italy
2004
Piana di Palermo is characterized by the presence of two different aquifers: one shallow, constituted by calcarenites and the other deep in fractured carbonates. The calcarenitic aquifer presents a low potential compared to the carbonatic aquifer. The chemistry of the water in both aquifers reflects water-rock interaction, seawater intrusion, ionic exchange etc. The application of SINTACS method showed that about 80% of the study area can be classified as of high to very high vulnerability. Piana di Palermo es caracterizada por la presencia de dos acuíferos diferentes: uno somero constituido por calcarenitas y otro profundo en rocas carbonatadas fracturadas. El acuífero calcarenítico presen…