5401. |
5402. Control of the Polarization of a Vacuum-Ultraviolet, High-Gain, Free-Electron LaserEnrico Allaria, Giovanni De Ninno, Primož Rebernik Ribič, David Gauthier, C. Grazioli, Barbara Ressel, 2014, izvirni znanstveni članek Ključne besede: laser na proste elektrone, relativistični elektroni, polarizacija Objavljeno v RUNG: 29.02.2016; Ogledov: 4975; Prenosov: 443 Celotno besedilo (1,92 MB) |
5403. Experimental Demonstration of Electron Longitudinal-Phase-Space Linearization by Shaping the Photoinjector Laser PulseG. Penco, M. Danailov, A. Demidovich, Enrico Allaria, Giovanni De Ninno, S. Di Mitri, W. Fawley, E. Ferrari, L. Giannessi, M. Trovó, 2014, izvirni znanstveni članek Ključne besede: laser na proste elektrone, linearizacija, relativistični elektroni Objavljeno v RUNG: 29.02.2016; Ogledov: 4541; Prenosov: 0 Gradivo ima več datotek! Več... |
5404. |
5405. |
5406. 2FHL : THE SECOND CATALOG OF HARD FERMI-LAT SOURCESM. Ackermann, Gabrijela Zaharijas, Collaboration Fermi LAT, 2016, izvirni znanstveni članek Opis: We present a catalog of sources detected above 50 GeV by the Fermi-Large Area Telescope (LAT) in 80 months of data. The newly delivered Pass8 event-level analysis allows the detection and characterization of sources in the 50 GeV–2 TeV energy range. In this energy band, Fermi-LAT has detected 360 sources, which constitute the second catalog of hard Fermi-LAT sources (2FHL). The improved angular resolution enables the precise localization of point sources (∼1 7 radius at 68% C.L.) and the detection and characterization of spatially extended sources. We find that 86% of the sources can be associated with counterparts at other wavelengths, of which the majority (75%) are active galactic nuclei and the rest (11%) are Galactic sources. Only 25% of the 2FHL sources have been previously detected by Cherenkov telescopes, implying that the 2FHL provides a reservoir of candidates to be followed up at very high energies. This work closes the energy gap between the observations performed at GeV energies by Fermi-LATon orbit and the observations performed at higher energies by Cherenkov telescopes from the ground. Ključne besede: catalogs – gamma-rays Objavljeno v RUNG: 25.02.2016; Ogledov: 5218; Prenosov: 0 Gradivo ima več datotek! Več... |
5407. Removal of diclofenac from water by zeolite-assisted advanced oxidation processesDaria Juretic Perisic, Vanja Gilja, Mirjana Novak Stankov, Zvonimir Katancic, Hrvoje Kusic, Urška Lavrenčič Štangar, Dionysios D. Dionysiou, Ana Loncaric Bozic, 2016, izvirni znanstveni članek Ključne besede: Diclofenac, FeZSM5, Biodegradability, Toxicity, Catalyst stability Objavljeno v RUNG: 24.02.2016; Ogledov: 5035; Prenosov: 0 Gradivo ima več datotek! Več... |
5408. Isotopic and elemental characterisation of Slovenian apple juice according to geographical origin: Preliminary results : /Karmen Bizjak Bat, Klemen Eler, Darja Mazej, Branka Mozetič Vodopivec, Ines Mulič, Peter Kump, Nives Ogrinc, 2016, izvirni znanstveni članek Opis: This study examined the applicability of stable isotope and multi-element data for determining the geographical
origin of fresh apple juices. Samples included three apple cultivars (Idared, Golden Delicious
and Topaz) harvested in 2011 and 2012 from five different geographical regions of Slovenia. Regional discrimination
of the juice samples was most successful when using linear discriminant analysis (LDA) and
taking into account the following parameters: d2H and d18O content of juice water; d15N and d13C content
of the pulp, (D/H)I and (D/H)II in ethanol and the concentration of S, Cl, Fe, Cu, Zn and Sr. Overall prediction
ability was 83.9%. The factors that best distinguished the different types of cultivar were the d2H and
d18O content of fruit juice water; the d13C and (D/H)I content of ethanol; and the concentration of S, Mg, K,
Cu, and Ti. Prediction ability, taking into account all ten parameters, was 75.8%. Ključne besede: Apple juice, Stable isotopes, Elemental content, Geographical origin, Slovenia Objavljeno v RUNG: 15.02.2016; Ogledov: 6057; Prenosov: 0 Gradivo ima več datotek! Več... |
5409. |
5410. Determination of organochlorine pesticides adsorbed on plastic pellets2015, objavljeni povzetek znanstvenega prispevka na konferenci Opis: In the past years, several studies have revealed the presence of organic contaminants at
concentrations from sub ng g–1 to mg g–1 on/in plastic pellets found in coastal environment
worldwide [1,2,3]. Plastic pellets are actually industrial raw material, typically in the shape of
small granules with a diameter of a few mm. They are categorized as microplastics (< 5 mm).
They can be unintentionally lost in the environment during manufacturing and transport. They
can subsequently reach the marine and coastal compartments. Due to their environmental
persistence, they are widely distributed in the oceans and on beaches [1]. Organic pollutants
associated to pellets are either additives (e.g. PBDEs) that are incorporated into plastics during
production processes or hydrophobic chemicals (e.g. PCBs, organochlorine pesticides) which
adsorb from the surrounding environment (e.g. seawater). Among these chemicals, some are
recognized as POPs (Persistent Organic Pollutants) because of their persistence,
bioaccumulation and potential adverse environmental and health effects. Thus, in order to
better assess the impact of plastic pellets in coastal environment, it is necessary to determine
the level of associated organic pollutants.
The present study was carried out in the frame of DeFishGear project, which focuses on marine
litter and microplastics issues in Adriatic region. This investigation aimed at developing an
experimental protocol allowing the quantification of 11 organochlorine pesticides. Plastic
pellets, sampled on beaches located in the Adriatic region, were first sorted by colour. Pesticides
were extracted from the plastic matrix (c.a. 0.5 g) in a pressurized fluid extractor (50°C, 100 bar).
Prior to evaporation, the extract was cleaned on Florisil sorbent through solid-phase extraction
(SPE). The concentrated extracts were quantified on gas chromatography equipped with a micro
electron capture detector (GC-μECD). Preliminary results revealed the presence of DDT
transformation products. Ključne besede: organochlorine pesticides, microplastics, pellets, Adriatic region Objavljeno v RUNG: 15.02.2016; Ogledov: 4730; Prenosov: 0 Gradivo ima več datotek! Več... |