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5242. The first example of a mixed valence ternary compound of silver with random distribution of Ag(I) and Ag(II) cationsIztok Arčon, Zvonko Jagličić, Wojciech Grochala, Zoran Mazej, Evgeny A. Goreshnik, Tomasz Michałowski, Jadwiga Szydłowska, 2015, original scientific article Keywords: srebrov fluorid, mešana valenca, srebro, XANES
Published in RUNG: 16.06.2016; Views: 4191; Downloads: 159
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5245. Measurement of the Radiation Energy in the Radio Signal of Extensive Air Shower as a Universal Estimator of Cosmic-Ray EnergyA. Aab, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, 2016, original scientific article Keywords: energija sevanja, radio signal, univerzalni estimator energije kozmičnih žarkov
Published in RUNG: 15.06.2016; Views: 3794; Downloads: 1
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5246. Energy estimation of cosmic rays with the Engineering Radio Array of the Pierre Auger ObservatoryA. Aab, Andrej Filipčič, Gašper Kukec Mezek, Ahmed Saleh, Samo Stanič, Marta Trini, Serguei Vorobiov, Lili Yang, Marko Zavrtanik, Danilo Zavrtanik, 2016, original scientific article Keywords: mreža radio detektorjev, izsevana energija, Observatorij P. Auger
Published in RUNG: 15.06.2016; Views: 3885; Downloads: 0
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5247. Multiple and Short Wh-Movement as Wh-Movement to the PeripheriesPetra Mišmaš, 2016, published scientific conference contribution abstract Abstract: In the talk I use Slovenian to explore the parallel behaviour of questions with multiple whmovement and questions with short movement (i.e. wh-questions in which at least one wh-phrase moves to the clause initial position but one moves to a clause internal position, cf. Citko (2010)). Based on the similarities, I argue that in both cases wh-phrases undergo wh-movement to a ‘Periphery’ – short wh-movement to the Low Periphery in the sense of Belletti (2004), and multiple wh-movement to the Left Periphery in the sense of Rizzi (1997).
Keywords: Low Periphery, Left Periphery, wh-movement, Slavic
Published in RUNG: 13.06.2016; Views: 4712; Downloads: 0
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5249. Synthesis, Structure and Antimicrobial Property of Green Composites from Cellulose, Wool, Hair and Chicken FeatherChieu Tran, Franja Prosenc, Mladen Franko, Gerald Benzi, 2016, original scientific article Abstract: Novel composites between cellulose (CEL) and keratin (KER) from three different sources (wool, hair and chicken feather) were successfully synthesized in a simple one-step
process in which butylmethylimidazolium chloride (BMIm+Cl-), an ionic liquid, was used as the sole solvent. The method is green and recyclable because [BMIm+Cl-] used was recovered for reuse. Spectroscopy (FTIR, XRD) and imaging (SEM) results confirm that CEL and KER remain chemically intact and homogeneously distributed in the composites. KER retains some of its secondary structure in the composites. Interestingly, the minor differences in the structure of
KER in wool, hair and feather produced pronounced differences in the conformation of their corresponding composites with wool has the highest α-helix content and feather has the lowest content. These results correlate well with mechanical and antimicrobial properties of the composites. Specifically, adding CEL into KER substantially improves mechanical strength of [CEL+KER] composites made from all three different sources, wool, hair and chicken feathers (i.e., [CEL+wool], [CEL+hair] and [CEL+feather]. Since mechanical strength is due to CEL, and CEL has only random structure, [CEL+feather] has, expectedly, the strongest mechanical property because feather has the lowest content of α-helix. Conversely, [CEL+wool] composite
has the weakest mechanical strength because wool has the highest α-helix content. All three composites exhibit antibacterial activity against methicillin resistant S. aureus (MRSA). The antibacterial property is due not to CEL but to the protein and strongly depends on the type of the
keratin, namely, the bactericidal effect is strongest for feather and weakest for wool. These results together with our previous finding that [CEL+KER] composites can control release of drug such as ciprofloxacin clearly indicate that these composites can potentially be used as wound dressing.
Keywords: Green synthesis, Ionic liquid, Keratin, Antibacteria, Wound dressing
Published in RUNG: 08.06.2016; Views: 4530; Downloads: 0
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5250. Microfluidic flow injection thermal lens microscopy for high throughput and sensitive analysis of sub-μL samplesMingqiang Liu, Sara Malovrh, Mladen Franko, 2016, original scientific article Abstract: An analytical method combining microfluidic flow injection analysis (μFIA) with thermal lens microscopy (TLM) was developed for high throughput and sensitive analysis of sub-μL samples. Performance of the μFIA-TLM was validated for detection of hexavalent chromium [Cr(VI)] in water samples. At different sample injection volumes, detection positions and flow rates, influences of the reaction time and the diffusion of Cr-diphenylcarbazone (DPCO) complexes on the μFIA-TLM signal were investigated. Photodegradation of the Cr-DPCO complex was clearly observed when the absorbed photons per Cr-DPCO is above 1600. After optimization of the TLM with respect to rapid flows (up to 10 cm/s), we achieved a limit of detection of 0.6 ng/mL for Cr(VI) in a 50-μm deep channel. Impacts of interfering ions [V(V), Mo(VI), Fe(III)] on the Cr(VI) determination were found to be small. Cr(VI) in real samples from a cement factory were determined and found in good agreement with results of spectrophotometry. This μFIA-TLM shows advantages over its conventional counterpart, such as eliminating additional sample conditioning, reducing over 100 times the sample consumption to sub-μL and over 10 times the time required for one sample injection to a few seconds (up to 20 samples/min). The optimized μFIA-TLM setup can be applied for fast and sensitive analysis of nonfluoresent sub-μL samples in rapidly flowing mediums.
Keywords: Spektrometrija TLS, mikroskopija TLM, mikrofluidika, krom (VI)
Published in RUNG: 01.06.2016; Views: 5276; Downloads: 270
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