Search results for "Ham"
showing 10 items of 2612 documents
The XENON1T Dark Matter Experiment
2017
The XENON1T experiment at the Laboratori Nazionali del Gran Sasso (LNGS) is the first WIMP dark matter detector operating with a liquid xenon target mass above the ton-scale. Out of its 3.2 t liquid xenon inventory, 2.0 t constitute the active target of the dual-phase time projection chamber. The scintillation and ionization signals from particle interactions are detected with low-background photomultipliers. This article describes the XENON1T instrument and its subsystems as well as strategies to achieve an unprecedented low background level. First results on the detector response and the performance of the subsystems are also presented. © 2017, The Author(s).
XENON1T Dark Matter Data Analysis: Signal Reconstruction, Calibration and Event Selection
2019
The XENON1T experiment at the Laboratori Nazionali del Gran Sasso is the most sensitive direct detection experiment for dark matter in the form of weakly interacting particles (WIMPs) with masses above $6\,$GeV/$c^2$ scattering off nuclei. The detector employs a dual-phase time projection chamber with 2.0 metric tons of liquid xenon in the target. A one metric $\mathrm{ton}\times\mathrm{year}$ exposure of science data was collected between October 2016 and February 2018. This article reports on the performance of the detector during this period and describes details of the data analysis that led to the most stringent exclusion limits on various WIMP-nucleon interaction models to date. In pa…
La sépulture à char de La Tène A ancienne des “Craises” à Molinons (Yonne)
2013
The study reports on a chariot tomb excavated in 1985 at Les Craises in Molinons (Yonne). Set in an adventitious position in the midst of a monument with three quadrangular enclosures, the grave was of an adult of undetermined sex. Despite later pillaging, the goods found in this aristocratic tomb permit a dating to the second quarter of the 5th century BC, and an unusual cultural attribution, on the frontier in the Parisian Basin between the Jura culture to the south and the Marne-Moselle culture to the north.
Les établissements ruraux palissadés hallstattiens en Champagne
2010
Die im östlichen Teil des Pariser Beckens bekannten Siedlungen mit Palisadenanlagen der Hallstattzeit werden seit ein paar Jahren häufiger in der Kreidelandschaft der trockenen Champagne entdeckt. Der aktuelle Zuwachs des regionalen Datenbestands gibt Anlaß, diese Art von Siedlungen nun näher zu erforschen und Arbeitshypothesen zu ihrer Chronologie, Funktion und sozialer Stellung in der damaligen Zeit aufzustellen. Ihre maximale zeitliche Ausdehnung er - streckt sich anscheinend vom Ende der späten Bronzezeit bis zum Ende der Hallstattzeit, aber es existieren noch viele Fragen über den genauen Rhythmus der Besiedlung und der Bewirtschaftung der landwirtschaftlichen Flächen. Wei - ter hin be…
"On-the-go" multispectral imaging system embedded on a track laying tractor to characterize the vine foliage
2015
Mutispectral imaging systems are widely used in remote sensing for Precision Viticulture. In this work, this technique was applied in the proximal sensing context to characterize vine foliage. A mobile terrestrial experimental system is presented, composed of a GPS receiver, a multi-spectral camera acquiring visible and near infrared images, and a Greenseeker RT-100 which measures the Normalized Difference Vegetative Index (NDVI). This optical system observes vine foliage in the trellis plan, in natural sunlight. The experimental field is planted with Chardonnay, Pinot Noir and Meunier cultivars in a latin squared pattern. In 2013, six datasets were acquired at various phenological stages.S…
Etude en champ proche et champ lointain de surfaces métalliques : apport des microscopies à sonde locale à l'étude des étalons de masse
2005
Among the international system of units (SI) the kilogram is the only one which is still defined by a material artefact, the international prototype of the platinum iridium kilogram. The instability of mass standards is one of the major concerns of national metrology institutes and the subject of numerous studies. Interest in microscopic studies of surface quality of a mass has grown, as it is well known that surface roughness is a factor in determining the long-term stability of mass standards. This thesis is devoted to the study in near field and far field for determining the topography and roughness of metallic surfaces, in related with different institute, national and international met…
Muhammada tēls Eiropas literatūrā: salīdzinājums ar islāma literatūru
2020
Bakalaura darba nosaukums ir “Muhammada tēls Eiropas literatūrā: salīdzinājums ar islāma literatūru”. Darbā tiek apskatīts kā veidojies Muhammada tēls viduslaiku Eiropā un kāds tas ir mūsdienu Eiropas un ASV literatūrā. Mūsdienu Eiropas un ASV Muhammada tēls arīdzan tiek salīdzināts ar islāma Muhammada tēlu. Darba 1. nodaļā apskatīta Muhammada nozīme musulmaņu kultūrā, musulmaņu literatūrā aprakstīts Muhammada raksturojums un morālās īpašības, Muhammada nozīme islāmā un ietekme uz arābu kultūru, un kristietības un jūdaisma ietekme uz islāmu. Darba 2. nodaļā apskatīta izpratne par Muhammadu Eiropā, pirmie Eiropas iespaidi un ziņas par pravieti, salīdzināts kristietības pravietis Jēzus Kristu…
The rhetorical construction of Hillary Rodham Clinton as a presidential contender in 2016: A case study of hillaryclinton.com
2016
Niniejsze studium poświęcone jest retorycznym sposobom konstruowania obrazu kandydatki na prezydenta USA Hillary Rodham Clinton podczas pierwszej fazy kampanii 2016 roku. Kontekstem studium jest literatura na temat różnic genderowych w dyskursie politycznym, a w szczególności badania poświęcone medialnym reprezentacjom kobiet w polityce, z których wynika, że kobiety, przynajmniej w USA, muszą bardziej aktywnie niż mężczyźni kreować swój publiczny wizerunek. Za pomocą perspektywy retorycznej, zbadano strategiczny sposób konstruowania i kontrolowania publicznego obrazowania Hillary Clinton w reakcji na przedstawienia jej kandydatury przez media głównego nurtu. Analizie poddano materiały tekst…
Hydrothermal methane fluxes from the soil at Lakki plain (Nisyros Island, Greece)
2013
Μετρήσεις φυσικής ροής μεθανίου και διοξειδίου του άνθρακα από το έδαφος πραγματοποιήθηκαν με τη μέθοδο συγκέντρωσης θαλάμου στην περιοχή Λακκί της Καλδέρας της Νισύρου, καλύπτοντας έκταση περίπου 0.06 km2 συμπεριλαμβάνοντας τις περιοχές Καμινάκια, Στέφανος και Αλέξανδρο όπου παρατηρείται έντονη ατμιδική δραστηριότητας. Οι τιμές ροής που μετρήθηκαν σε 77 σημεία κυμαίνονται από –3.4 μέχρι 1420 mg m-2 d-1 για το CH4 και από 0.1, μέχρι 383 g m-2 d-1 για το CO2. Στις τρεις ατμιδικές περιοχές παρουσιάζονται διαφορετικοί ρυθμοί διαφυγής μεθανίου, ιδίως στα Καμινάκια όπου προέκυψαν οι μεγαλύτερες τιμές ροής. Η εξερχόμενη ποσότητα μεθανίου εκτιμάται σε 0.01 t a-1 από μια έκταση περίπου 2500 m2 στον…