Search results for "SUN"
showing 10 items of 935 documents
I colori siciliani
2012
Abstract
Melanomas apzināšanās un riska uzvedība starp universitāšu studentiem
2016
Melanomas sastopamība turpina pieaugt visā pasaulē, it īpaši jaunu eiropeīdu pieaugušo vidū. Ir svarīgi identificēt riska faktorus un sniegt zināšanas par melanomu, lai varētu novērst tās rašanos. Pētījuma mērķis bija noskaidrot atšķirības starp valstīm un fakultātēm saistībā ar melanomas apzināšanos un riska uzvedību, it īpaši analizējot, vai labāka melanomas apzināšana samazina riska uzvedību. Šis kross-sekcionālais pētījums iekļāva Latvijas un Somijas universitāšu studentus no divām dažādām fakultātēm (medicīnas un fizikas). Mūsu pētījums atklāja, ka melanomas apzināšana neparedz ar sauļošanos saistītas riskantas uzvedības mazināšanos. Starp fakultātēm un nacionalitātēm pastāv atšķirības…
SUNRISE/IMaX observations of convectively driven vortex flows in the Sun
2010
We characterize the observational properties of the convectively driven vortex flows recently discovered on the quiet Sun, using magnetograms, Dopplergrams and images obtained with the 1-m balloon-borne Sunrise telescope. By visual inspection of time series, we find some 3.1e-3 vortices/(Mm^2 min), which is a factor of 1.7 larger than previous estimates. The mean duration of the individual events turns out to be 7.9 min, with a standard deviation of 3.2 min. In addition, we find several events appearing at the same locations along the duration of the time series (31.6 min). Such recurrent vortices show up in the proper motion flow field map averaged over the time series. The typical vertica…
Environmental Performance Evaluation at Urban Roundabouts
2021
Transformation toward greener, healthier and safer management of urban mobility demand is needed soon. Smart tools are available to assess the impact of new infrastructural projects and road facilities also from an environmental point of view. In this pilot study pollutant emissions at a sample of urban roundabouts were estimated employing the Vehicle Specific Power methodology which needs second-by-second speed profiles both gathered in the field and simulated in AIMSUN. The versatility of the micro-simulation model for a calibration aimed at improving accuracy of the emissions estimates was tested in order to ensure that second-by-second trajectories experienced in the field properly refl…
Analisi comparata di metodi di calcolo del run-up per tsunami generati da frana. Casi di studio nel Margine Continentale della Sicilia Settentrionale
2017
Il margine continentale della Sicilia settentrionale è caratterizzato dalla presenza di pericolosità geologiche (sismicità, vulcanismo, risalita di fluidi e movimenti di massa) che espongono questa regione a rischi geologici marini, con potenziale di generazione di tsunami. Gli tsunami sono onde anomale solitarie legate a movimenti verticali improvvisi dei fondali. Le caratteristiche principali di un’onda anomala sono rappresentate dall’elevata lunghezza d'onda e da un’altezza che varia notevolmente durante la propagazione. L'obiettivo di questo lavoro è quello di calcolare il run-up associato a tsunami generati da frane. Nel nostro caso sono stati presi in esame due settori della costa set…
Red and Far-Red Fluorescence Emission Retrieval from Airborne High-Resolution Spectra Collected by the Hyplant-Fluo Sensor
2018
The contribution presents the development and testing of a fluorescence retrieval scheme based on the ESA's FLuorescence EXplorer mission concept. The algorithm employs on a coupled surface-atmosphere forward model at oxygen absorption bands: i) the atmospheric effect is computed by MODTRAN5; ii) the surface reflectance and fluorescence are modeled by means of the Spectral Fitting approach. The algorithm, previously tested on numerical simulations, was further implemented and optimized to process real observations collected by the FLEX airborne demonstrator HyPlant. The retrieval scheme has been tested on a number of flight lines collected in several locations, different ecosystems types, a…
A very simple model for computing global solar radiation
1990
Abstract In this paper a very simple model for predicting the daily global solar radiation at any Italian location using as input of a few extensively measured meterological parameters is proposed. In fact the daily radiation G (MJ m−2) is here correlated only with the sunshine duration s (h) and the noon altitude of the sun on the 15th of the month h n (degrees) by the following equation: G= Ks 0.5 (sin h n ) 1.15 where only one value of the factor K is used. The validity of this formula is verified fixing K = 7.8 and using the data from 34 Italian stations displaced at various latitudes, altitudes or geographical situations (inland or coastal site). The test results show that the deviatio…
An interlaboratory study as useful tool for proficiency testing of chemical oxygen demand measurements using solid substrates and liquid samples with…
2009
In 2008, the first Proficiency Testing Scheme of Chemical Oxygen Demand (1stCOD-PTADG) was conducted to assess the results obtained for different research groups whose field work is mainly anaerobic digestion. This study was performed using four samples, two solid samples as raw materials and two solid samples to prepare high concentration suspended solid solutions. Invitations were sent to a large number of laboratories, mainly to anaerobic digestion research groups. Finally, thirty labs from sixteen countries agreed to participate, but for different reasons four participants could not send any data. In total, twenty-six results were reported to the COD-PT coordinator. This study showed th…
Abstract LB-295: Detection of oncogenic kinase mutations in circulating plasma DNA and correlation with clinical benefit in the phase III GRID study …
2013
Abstract Background: GRID is a phase III study for patients with advanced gastrointestinal stromal tumors (GIST) following failure of imatinib (I) and sunitinib (S) who were randomized to receive either the multikinase inhibitor regorafenib (R) or placebo (P). R demonstrated a highly significant improvement in progression-free survival compared with P (HR 0.27, p<0.0001). A preplanned retrospective biomarker analysis was conducted to assess GIST genotypes in GRID patients and to explore the possible impact of different driver oncogene mutations on clinical outcomes. Methods: DNA was isolated from archival tumor tissue and analyzed for KIT mutations via Sanger sequencing. The expectat…
Saules aktīvo apgabalu īpatnību pētījumi, izmantojot novērojumus mikroviļņu diapazonā
2013
Elektroniskā versija nesatur pielikumus