5271. Thermal lens spectrometry - still a technique on the horizon?Mladen Franko, 2015 Abstract: In 1980’s thermal lens spectrometry (TLS) was still considered as a “spectrometric technique on the horizon” as one can also read from one of the textbooks on spectrochemical analysis of that time. Intensive development of thermal lens instrumentation and methods of chemical analysis and material characterisation has however resulted in substantial progress in this field, which is evident from important instrumental innovations and first commercial instruments (i.e. thermal lens microscopes -TLM) designed for lab-on-a-chip chemistry as well as from novel applications of TLS in various areas, where highly sensitive and rapid chemical analysis of complex samples is needed, including food safety and quality control, environmental analysis and biomedical diagnostics.
This presentation is a review of most significant contributions and applications of thermal lens spectrometry, with emphasis on most recent achievements in instrumentation, which culminated into construction of novel optimized TLM instruments, capable of exploiting the tuneability of incoherent light sources and enabled novel applications particularly in micro-fluidics. Based on latest progress relying on bio-analytical assays and micro-fluidic flow injection with TLM detection we have also witnessed firs routine applications of TLS in analytical and diagnostic laboratories, which on wine side actually classifies TLS as a conventional and routine analytical tool, but at the same time opens new horizons for development and applications of this ultrasensitive and rapid spectrometric technique. Keywords: Thermal lens spectrometry, applications, Liquid chromatography, flow injection analysis, bioanalytical methods Published in RUNG: 29.03.2016; Views: 6579; Downloads: 0 This document has many files! More... |
5272. Biogaserzeugung aus Brauereihefe in einem EGSB-ReaktorGregor Drago Zupančič, Milenko Roš, Romana Marinšek Logar, Miran Klemečič, Matej Oset, 2015, professional article Abstract: Im vorliegenden Beitrag soll die fünfjährige Erfahrung mit der Co-Vergärung von Brauereihefe für die Erzeugung von Biogas im industriellen Maßstab vorgestellt werden. Der Betrieb mit den gesamten, in der Brauerei anfallenden Heferückständen (0,7 Vol.-%) brachte eine Steigerung der CSB-Fracht von 26,2 Prozent und der Biogaserzeugung von 38,5 Prozent. Infolgedessen erhöhte sich die substitutionsquote Biomethan/Erdgas in der Brauerei von 10 auf 16 Prozent. Keywords: Brauereihefe, Biomethan, Erdgas, Co-Vergärung Published in RUNG: 29.03.2016; Views: 4787; Downloads: 0 This document has many files! More... |
5273. A. Gradnik, Eros-Thanatos, prefazione, scelta e traduzione a cura di F. Ferluga-Petronio : ztt-est, Trieste 2013, pp. 174Ana Toroš, 2015, review, book review, critique Abstract: Nel 2013 è stata pubblicata dallo Založništvo tržaškega tiska – Editoriale stampa triestina
(ztt-est) – l’antologia Eros-Thanatos di Alojz Gradnik a cura di Fedora Ferluga-Petronio. Alojz
Gradnik (1882-1967), uno dei maggiori poeti sloveni nonché famoso traduttore, nacque nel Collio
412 Studi Slavistici xii (2015) Keywords: Alojz Gradnik, Fedora Ferluga- Petrnio, prevodi, slovenska poezija, Brda Published in RUNG: 29.03.2016; Views: 5289; Downloads: 0 This document has many files! More... |
5274. Application of high-performance liquid chromatography combined with ultra-sensitive thermal lens spectrometric detection for simultaneous biliverdin and bilirubin assessment at trace levels in human serumMitja Martelanc, Lovro Žiberna, Sabina Passamonti, Mladen Franko, 2016, original scientific article Abstract: We present the applicability of a new ultra sensitive analytical method for the simultaneous determination of biliverdin and bilirubin in human serum. The method comprises isocratic reversed-phase(RP) C18 high-performance liquid chromatography (HPLC) and thermal lens spectrometric detection (TLS)based on excitation by a krypton laser emission line at 407 nm. This method enables the separation of IX-α biliverdin and IX-α bilirubin in 11 min. with limit of detection (LOD) and limit of quantitation (LOQ) for
biliverdin of 1.2 nM and 3 nM, and 1nM and 2.8 nM for bilirubin,respectively.In addition, a step-gradient elution was set up, by changing the mobile phase composition, in order to further enhance the sensitivity for bilirubin determination with LOD and LOQ of 0.5 nM and 1.5 nM, respectively. In parallel, an isocraticHPLC-DAD method was developed for benchmarking against HPLC-TLS methods. The LOD
and LOQ forbiliverdin were 6 nM and 18 nM, and 2.5 nM and 8nM for bilirubin,respectively. Additionally, both isocratic methods were applied for measuring biliverdin and free bilirubin in human serum samples (from 2 male and 2 female healthy donors). Combining isocratic HPLC method with TLS
detector was crucial for first ever biliverdin determination in serum together with simultaneous free bilirubin determination. We showed for the first time the concentration ratio of free bilirubin versus unbound biliverdin in human serum samples. Keywords: Bilirubin, biliverdin, serum, HPLC, TLS Published in RUNG: 29.03.2016; Views: 5599; Downloads: 0 This document has many files! More... |
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5276. FlashCam: a fully-digital camera for the medium-sized telescopes of the Cherenkov Telescope ArrayG. Pühlhofer, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Cherenkov Telescope Array (CTA), medium-sized telescopes (MST), imaging camera, FlashCam fully-digital readout system Published in RUNG: 24.03.2016; Views: 4500; Downloads: 195 Full text (1,78 MB) |
5277. NectarCAM : a camera for the medium size telescopes of the Cherenkov Telescope ArrayJ-F. Glicenstein, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Cherenkov Telescope Array (CTA), medium-sized telescopes (MST), imaging camera, NectarCAM design, NECTAr ASIC, Switched Capacitor Array Published in RUNG: 24.03.2016; Views: 4654; Downloads: 237 Full text (4,86 MB) |
5278. Development of the photomultiplier tube readout system for the first Large-Sized Telescope of the Cherenkov Telescope ArrayShu Masuda, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, 2015, published scientific conference contribution Keywords: Cherenkov Telescope Array (CTA), Large-Sized Telescope (LST), imaging camera, readout system Published in RUNG: 24.03.2016; Views: 4651; Downloads: 310 Full text (927,35 KB) |
5279. Na Kanalskem velike možnosti za pridelavo kakovostnega sadjaZoran Božič, 2016, interview Abstract: Dr. Zoran Božič je profesor na SETŠ Nova Gorica in predavatelj na Univerzi v Novi Gorici, v zadnjem mandatu je bil izvoljen v državni zbor kot predstavnik vzgoje in izobraževanja. V prostem času, ki ga sicer ni ravno veliko, se ukvarja z vzgojo starih sort sadnega drevja. Keywords: sadjarstvo, stare sadne sorte, Goriška, sadovnjak Pod skalco, ekologija Published in RUNG: 24.03.2016; Views: 5384; Downloads: 238 Full text (936,34 KB) |
5280. Asymmetric WIMP Dark Matter in the presence of DM/anti-DM OscillationsGabrijela Zaharijas, 2012, published scientific conference contribution abstract Abstract: The class of ‘Asymmetric Dark Matter’ scenarios relies on the existence of a primordial
particle/anti-particle asymmetry in the dark sector related to the baryon asymmetry as a
way to address the observed similarity between the baryonic and dark matter energy densities
today. Focusing on this framework we calculate the evolution of the dark matter relic
abundance in the presence of particle/anti-particle oscillations. We show how oscillations reopen
the parameter space of asymmetric dark matter models, in particular in the direction of
allowing large (WIMP-scale) DM masses. Finally, we constrain the parameter space in this
framework by applying up-to-date bounds from indirect detection signals on annihilating DM. Keywords: dark matter, early universe Published in RUNG: 23.03.2016; Views: 4618; Downloads: 0 This document has many files! More... |