Search results for "radio"
showing 10 items of 8895 documents
Television musiikkiohjelmat 1958-1972 : televisio määrällisenä musiikkisivistäjänä
2008
Sienipilven varjossa : ydinsodan pelko amerikkalaisessa kulttuurissa vuosina 1950-1963
2014
Toinen maailmansota päättyi kahteen Japaniin pudotettuun atomipommiin. Pian amerikkalaisten mielet valtasi huoli siitä, mitä atomipommi voisi tehdä, jos sellainen räjähtäisi Yhdysvaltain maaperällä. Kun Neuvostoliitto vuonna 1949, teki ensimmäisen onnistuneen ydinkokeensa, alkoivat ihmiset toden teolla jopa pelkäämään sitä mahdollisuutta, että se saattaisi hyökätä Yhdysvaltoihin atomipommein. Tätä pelkoa Yhdysvaltain hallinnon oli kitkettävä, jotta minkäänlaista paniikkia ei pääsisi syntymään. Ensimmäinen ohjekirjanen, jossa ihmisille opastettiin kuinka ydinräjähdyksen sattuessa tulisi toimia, ilmestyi vuonna 1950. Atomipommista siirryttiin pian huomattavasti tuhovoimaisempaan vetypommiin, …
Comparison between SMOS Vegetation Optical Depth products and MODIS vegetation indices over crop zones of the USA
2014
The Soil Moisture and Ocean Salinity (SMOS) mission provides multi-angular, dual-polarised brightness temperatures at 1.4 GHz, from which global soil moisture and vegetation optical depth (tau) products are retrieved. This paper presents a study of SMOS' tau product in 2010 and 2011 for crop zones of the USA. Retrieved tau values for 504 crop nodes were compared to optical/IR vegetation indices from the MODES (Moderate Resolution Imaging Spectroradiometer) satellite sensor, including the Normalised Difference Vegetation Index (NDVI), Enhanced Vegetation Index (EVE), Leaf Area Index (LAI), and a Normalised Difference Water Index (NOW!) product. tau values were observed to increase during the…
2012
Hunter-gatherers living in Europe during the transition from the late Pleistocene to the Holocene intensified food acquisition by broadening the range of resources exploited to include marine taxa. However, little is known on the nature of this dietary change in the Mediterranean Basin. A key area to investigate this issue is the archipelago of the Egadi Islands, most of which were connected to Sicily until the early Holocene. The site of Grotta d’Oriente, on the present-day island of Favignana, was occupied by hunter-gatherers when Postglacial environmental changes were taking place (14,000-7,500 cal BP). Here we present the results of AMS radiocarbon dating, palaeogenetic and isotopic ana…
CT-Determined Maximum Pulmonary Artery to Ascending Aorta Diameter Ratio in Nonsevere COVID-19 Patients
2021
Southern Italy: How the Availability of Radiation Therapy, Patient Outcomes, and Risk to Health Care Providers Have Changed During the Coronavirus Di…
2020
The first actions and provisions in a Southern Italy Department of Radiation Oncology are described at the inception of the COVID-19 pandemic.
An experimental search for a correlation between outdoor 222Rn concentration and 210Pb activity in air particulate samples
2018
This work was aimed to search for a correlation between outdoor 222Rn air concentration and 210Pb activity in particulate samples collected on a filter. The existence of a correlation could support the hypothesis that both 222Rn and its long-lived product 210Pb are embedded into the same air masses and undergo the same air transport phenomena. Lead-210 activity was determined by means of gamma ray spectrometric measurement carried out a few days after the sampling whereas 222Rn concentration was measured through a commercial monitor. Experimental tests allowed to obtain a weak correlation between 222Rn and 210Pb air concentration as a preliminary result due to high uncertainties of outdoor …
Alcuni aspetti protezionistici nell’impiego di composti di 223Ra nella terapia medico-nucleare ambulatoriale
2018
L’impiego di composti di 223Ra, essenzialmente nella terapia medico-nucleare ambulatoriale delle metastasi ossee da carcinoma prostatico, ha posto diverse questioni dal punto di vista radioprotezionistico. Infatti, pur essendo il radionuclide caratterizzato da una emissione prevalentemente alfa, è comunque presente in bassa percentuale una componente gamma, costituita da emissioni di diversa energia e intensità, facilmente rilevabile con un monitor di dose o con uno spettrometro gamma portatile. In questo lavoro sono prese in esame le attività svolte all’interno di un reparto di Medicina Nucleare in cui è esercitata l’attività di terapia ambulatoriale (preparazione dei composti, somministra…
Spectroscopic studies of neutron-deficient light nuclei: decay properties of 21Mg, 25Si and 26P
2003
Neutron‐deficient nuclei with Tz equals to −3/2 and −2 have been produced at the GANIL/LISE3 facility in fragmentation reactions of a 95 MeV/u 36Ar primary beam in a 12C target. For the first time, β‐delayed proton and β‐γ emission has been simultaneously observed in the decay of 21Mg, 25Si and 26P. The decay scheme of the latter is proposed and the Gamow‐Teller strength distribution in its β decay is compared to shell‐model calculations based on the USD interaction. The B(GT) values derived from the absolute measurement of the β‐branching ratios are in agreement with the quenching factor of about 60% obtained for allowed Gamow‐Teller transitions in this mass region. A precise half‐life of …
The timing of initial imaging in testicular cancer: impact on radiological findings and clinical decision making
2021
Background In testicular cancer determination of clinical stage and recommendation of therapeutic strategy after inguinal orchiectomy are based on primary imaging by CT-scan of the chest and CT- or MRI- abdomen. It has not been investigated so far, whether the imaging should be performed before or after primary testicular surgery. Staging before surgery means exposing all patients to CT radiation irrespective of ensured histologic malignancy while postoperative staging could pose a risk in biased clinical decision making by increased presence of unspecific lymph node enlargement caused by postsurgical effects. Therefore, we aimed to investigate the association between the timing of initial …