Repozitorij Univerze v Novi Gorici

Iskanje po repozitoriju
A+ | A- | Pomoč | SLO | ENG

Iskalni niz: išči po
išči po
išči po
išči po
* po starem in bolonjskem študiju


31 - 40 / 2070
Na začetekNa prejšnjo stran12345678910Na naslednjo stranNa konec
Imajo večjezični in glasbeniki boljša ušesa?
2018, intervju

Ključne besede: večjezičnost, glasbena izobrazba, učenje tujih jezikov
Objavljeno: 07.06.2018; Ogledov: 147; Prenosov: 1
.pdf Polno besedilo (1,42 MB)
Gradivo ima več datotek! Več...

Order Restrictions of Attributive Adjectives in Slovenian: A Self-Paced Reading Study
Vesna Plesničar, 2018, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: adjectives, complex noun phrase, adjective order restrictions, cartography
Objavljeno: 07.06.2018; Ogledov: 228; Prenosov: 0
.pdf Polno besedilo (2,02 MB)

Drifting through Cityscapes
Szabolcz Kisspal, Allan Siegel, Eszter Lazar, Olivera Batajić Sretenović, Danica Bojić, 2018, strokovna monografija

Ključne besede: local, city, urban, mapping, intermedia
Objavljeno: 06.06.2018; Ogledov: 158; Prenosov: 10
.pdf Polno besedilo (237,37 MB)

The sound of lexicalisation – Post-lexical prosody in Serbo-Croatian
Marko Simonović, Boban Arsenijević, prispevek na konferenci brez natisa

Ključne besede: postleksikalna prozodija srbohrvaščina
Objavljeno: 05.06.2018; Ogledov: 136; Prenosov: 1
.pdf Polno besedilo (189,75 KB)

Lexicon, Markedness and Grammar in the Serbo-Croatian Wobbly a
Antonio Baroni, Marko Simonović, prispevek na konferenci brez natisa

Ključne besede: leksikon zaznamovanost slovnica srbohrvaščina 'nepostojano a'
Objavljeno: 05.06.2018; Ogledov: 120; Prenosov: 0
.pdf Polno besedilo (1,78 MB)

Esej na maturi 2019
Andrej Adam, Zoran Božič, Adrijana Špacapan, strokovna monografija

Opis: Didaktična predstavitev romanov Francoski testament in Angel pozabe (tematski sklop za pisanje eseja iz slovenščine na splošni maturi 2019).
Ključne besede: didaktika, francoska književnost, Andrei Makine, roman, slovenska književnost, avstrijska književnost, Maja Haderlap, Zoran Božič, Adrijana Špacapan, druga svetovna vojna, prva svetovna vojna, nemška taborišča, ruski gulagi, partizanski odpor, posledice vojne, narodna manjšina, nacizem, stalinizem, diktatura, Pariz
Objavljeno: 04.06.2018; Ogledov: 205; Prenosov: 0
.pdf Polno besedilo (300,55 KB)

The detection and study of biologically active compounds in environmental processes and samples
Mojca Žorž Furlan, doktorska disertacija

Opis: Environmental pollution in the 21th century still represents a global problem for human and animal health. Despite general awareness about released substances and their degradation products their fate and possibilities of removal are not well investigated. Even though the chemicals released are dispersed and diluted in water cycles, their poor biodegradability and/or strong accumulation can result in the intoxication of exposed organisms. Similarly, as a part of the environment, food can get contaminated by bioactive substances during different steps of preparation. Not only artificial compounds such as pesticides or pharmaceuticals, but also natural toxins enter the food chain and impact negatively on humans' and animals' health. In addition, the activity of some bacteria can influence the production of amines from amino acids after fermentation, to which the human body responds with several symptoms of intoxication. Several analytical methods for the determination of trace levels of broad range contaminants have been developed. Due to the largely robust, selective and sensitive features of the conventional (rearguard) techniques, they represent the first choice for analysing multiple organic compounds in frequently very complex matrices. However, screening (vanguard) methods are paving the way in the chemical analytics as a solution that provides simplicity and rapid analytical responses with binary (yes/no) answers. They require little or no sample treatment as well as more economically-efficient instrumentation. The combination of vanguard-rearguard analytical strategies hence offers a compromise between classical analytical figures of merit and productivity-related characteristics. In the first part of our research feasibility studies for the application of TLS and/or TLM in novel analytical methods for the determination of lipid-lowering drug atorvastatin and a mycotoxin ochratoxin A . The survey on atorvastatin performed spectrophotometrically has shown a decrease of ATV-sulpho-vanillin product at the wavelength of its maximum absorbance after dilution by organic solvent, which was investigated due to the possible increasing of the method sensitivity. As the predicted LODs that could be obtained by TLM (0.3 mg/L) could not reach the concentration of ATV usually present in the environment (ng/L-g/L) further experiments on this subject were therefore not justified. On the other hand, the ELISA assay for the determination of ochratoxin A was performed. In case of μFIA-TLM, the measurements were influenced by high background signal resulting in high LODs of TLM (470 pg/mL), which is known as a background limited technique. It was estimated that the LODs of standard ELISA assay could not be significantly improved, therefore no further research was conducted in this direction. In the second part of the dissertation, a sensitive rearguard system by coupling HPLC and TLS for the determination of biogenic amines in wine samples was developed. Putrescine, cadaverine, histamine and tyramine were separated and detected on a HPLC-TLS system after derivatization by dabsyl chloride. The method was optimized in terms of chromatographic conditions and in terms of TLS parameters. Also, the sensitivity of the newly developed method was evaluated by comparing the TLS detection with DAD detection in terms of LOD values, where TLS showed 3.6-fold improvement compared to DAD. Afterwards, the standard addition calibration was performed and evaluated for its recoveries (86−117%) in the determination of the four BAs. The applicability of the novel method was tested by the analysis of real white and red wine samples and by comparing the results to the standard HPLC-FL method and concentrations of BAs in wine samples were in good accordance. In addition, the dabsylated BAs showed better stability compared to the OPA derivatives as they have not lost the peak intensity after 17h of storage. In the third part, a vanguard system for detection of the overall biogenic amines concentration was developed by employing μFIA-TLM. Initially, NH4Cl standard solutions were applied in the indophenol reaction for batch mode, off-line μFIA-TLM and in an on-line indophenol formation for μFIA-TLM detection. By adding 50 % of EtOH to indophenol we obtained 9-fold improvement. In addition, indophenol showed good stability under TLM conditions. We optimized the microfluidic and TLM parameters in the off-line and on-line indophenol reaction. The addition of 5% ethanol to the reagent in the on-line reaction resulted in the 3-fold improvement of the signal-to-noise ratio. Further on, the overall reaction, including the enzymatic and the following indophenol reaction, was optimized by choosing the optimal buffer (pH=7, 0.5 M) and alkaline conditions (2M NaOH). The influence of interferences from amino compounds was also evaluated and discussed. The off-line and on-line μFIA-TLM were evaluated by their performance characteristics. The LOD for ammonia detection reached 2.3 μM and the applicability in ammonia detection in water samples was discussed. Similar LOD of 3.2 μM was obtained for the overall concentration of BAs and LOD of 3.8 μM for histamine, which is more than 4-folds lower value as the lowest suggested limits of intake for histamine in wine samples (2 mg/L; 18 μM). Finally, an immobilization procedure on magnetic nanoparticles was developed for the possible implementation of the selected enzyme in a miniaturized biosensor.
Ključne besede: thermal lens spectrometry, thermal lens microscopy, high performance liquid chromatography, microfluidics, biogenic amines, microbial transglutaminase, indophenol (Berthelot) reaction
Objavljeno: 04.06.2018; Ogledov: 188; Prenosov: 46
.pdf Polno besedilo (2,90 MB)

Surface modified titanium dioxide using transition metals
Andraž Šuligoj, Iztok Arčon, Matjaž Mazaj, Goran Dražić, Denis Arčon, Pegie Cool, Urška Lavrenčič Štangar, Nataša Novak Tušar, 2018, izvirni znanstveni članek

Opis: Titanium dioxide has been widely used as an antimicrobial agent, UV-filter and catalyst for pollution abatement. Herein, surface modifications with selected transition metals (Me) over colloidal TiO2 nanoparticles and immobilization with a colloidal SiO2 binder as composite films (MeTiO2/SiO2) on a glass carrier were used to enhance solar-light photoactivity. Colloidal TiO2 nanoparticles were modified by loading selected transition metals (Me ¼ Mn, Fe, Co, Ni, Cu, and Zn) in the form of chlorides on their surface. They were present primarily as oxo-nanoclusters and a portion as metal oxides. The structural characteristics of bare TiO2 were preserved up to an optimal metal loading of 0.5 wt%. We have shown in situ that metal-oxo-nanoclusters with a redox potential close to that of O2/O2  were able to function as co-catalysts on the TiO2 surface which was excited by solar-light irradiation. The materials were tested for photocatalytic activity by two opposite methods; one detecting O2  (reduction, Rz ink test) while the other detecting OH (oxidation, terephthalic acid test). It was shown that the enhancement of the solar-light activity of TiO2 by the deposition of transition metal oxo-nanoclusters on the surface depends strongly on the combination of the reduction potential of such species and appropriate band positions of their oxides. The latter prevented excessive self-recombination of the photogenerated charge carriers by the nanoclusters in Ni and Zn modification, which was probably the case in other metal modifications. Overall, only Ni modification had a positive effect on solar photoactivity in both oxidation and reduction reactions.
Ključne besede: surface modified TiO2, XANES, EXAFS, Nickel, solar light photocatalyst
Objavljeno: 01.06.2018; Ogledov: 109; Prenosov: 0
.pdf Polno besedilo (1,24 MB)

Iskanje izvedeno v 0 sek.
Na vrh