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Št. zadetkov: 8
Vpliv vrste katalizatorja na hitrost reakcije v reaktorju z nasutjem
Roman Kranvogl, Andreja Goršek, Darja Pečar
Diplomsko delo
Oznake: hidroliza saharoze;invertaza;katalizator;aktivacijska energija;reaktor z nasutjem;
Hidroliza saharoze je reakcija, ki lahko poteka s kemijskim ali encimskim katalizatorjem. Z raziskavami v okviru diplomskega dela smo to reakcijo izvajali v kemijskem in biološkem reaktorju z nasutjem. Namen dela v prvi fazi je bil ugotoviti, s katerim katalizatorjem, kemijskim ali encimskim, doseže ...
Leto: 2010 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Uporaba UHPLC-HRMS za določanje organskih spojin v vzorcih psihoaktivnih snovi in prehranskih dopolnil
Gal Bjelovučić, Matjaž Finšgar, Roman Kranvogl
Magistrsko delo
Oznake: psihoaktivne snovi;prehranska dopolnila;identifikacija;magistrske naloge;
Magistrsko delo predstavlja uporabo tekočinske kromatografije ultra visoke ločljivosti, sklopljene z masno spektrometrijo visoke ločljivosti (angl. ultra high performance liquid chromatography – high resolution mass spectrometry, UHPLC-HRMS) za analizo psihoaktivnih snovi in prehranskih dopoln ...
Leto: 2023 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Določevanje endokrinih motilcev v urinu z GC/MS in kemometrijska karakterizacija
Roman Kranvogl, Darinka Brodnjak-Vončina, Ernest Vončina
Doktorska disertacija
Oznake: ftalati;metaboliti ftalatov;alkilfenoli;bisfenol A;plinska kromatografija;masna spektrometrija;urin;kemometrija;
V doktorski nalogi smo proučevali vpliv nekaterih spojin okoljskih endokrinih motilcev na plodnost moških z namenom, da bi preverili hipotezo ali vplivajo endokrini motilci na kakovost semenčic. V študijo smo vključili 136 parov, ki so se zdravili zaradi neplodnosti. Za analitiko sledov spojin endok ...
Leto: 2014 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Prediction of wine sensorial quality by routinely measured chemical properties
Adriána Bednárová, Roman Kranvogl, Darinka Brodnjak-Vončina, Tjaša Jug
Izvirni znanstveni članek
Oznake: vino;organoleptična ocena;parametri kakovosti;
The determination of the sensorial quality of wines is of great interest for wine consumers and producers since it declares the quality in most of the cases. The sensorial assays carried out by a group of experts are time-consuming and expensive especially when dealing with large batches of wines. T ...
Leto: 2014 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Characterization of Slovenian wines using multidimensional data analysis from simple enological descriptors
Adriána Bednárová, Roman Kranvogl, Darinka Brodnjak-Vončina, Tjaša Jug, Ernest Beinrohr
Izvirni znanstveni članek
Oznake: wine authentication;enological descriptors;classification techniques;ANN;
Determination of the product's origin is one of the primary requirements when certifying a wine's authenticity. Significant research has described the possibilities of predicting a wine's origin using efficient methods of wine components' analyses connected with multivariate data analysis. The main ...
Leto: 2013 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Simultaneous determination of phthalates, their metabolites, alkylphenols and bisphenol a using GC-MS in urine of men with fertility problems
Roman Kranvogl, Jure Knez, Alen Miuc, Ernest Vončina, Darinka Brodnjak-Vončina, Veljko Vlaisavljević
Izvirni znanstveni članek
Oznake: endocrine disrupting compounds;fertility;phthalates;bisphenol A;alkylphenols;human urine;
A GC-MS method was successfully applied to measure simultaneously the concentrations of endocrine disrupting compounds (5 dialkyl phthalates, 9 phthalate monoesters, 3 alkylphenols and bisphenol A) in 136 male urine samples. In the present study the method was validated and concentrations of EDCs we ...
Leto: 2014 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Characterization of Slovenian coal and estimation of coal heating value based on proximate analysis using regression and artificial neural networks
Darja Kavšek, Adriána Bednárová, Miša Biro, Roman Kranvogl, Darinka Brodnjak-Vončina, Ernest Beinrohr
Izvirni znanstveni članek
Oznake: Slovenian Coal;higher heating value;HHV;regression;artificial neural network;
Chemical composition of Slovenian coal has been characterised in terms of proximate and ultimate analyses and the relations among the chemical descriptors and the higher heating value (HHV) examined using correlation analysis and multivariate data analysis methods. The proximate analysis descriptors ...
Leto: 2013 Vir: Fakulteta za kemijo in kemijsko tehnologijo (UM FKKT)
Diversity and content of carotenoids and other pigments in the transition from the green to the red stage of Haematococcus pluvialis microalgae identified by HPLC-DAD and LC-QTOF-MS
Jaša Veno Grujić, Biljana Todorović, Roman Kranvogl, Terezija Ciringer, Jana Ambrožič-Dolinšek
Izvirni znanstveni članek
Oznake: ne zaključna dela;antioxidants;astaxanthin;chlorophylls;bioactive compounds;algae;Haematococcus;life cycle;pigment composition;secondary carotenoids;
H. pluvialis is a unicellular freshwater alga containing many bioactive compounds, especially carotenoids, which are the strongest antioxidants among the pigments. This study evaluates the composition and content of carotenoids and other pigments in both stages of algae life cycle, especially in th ...
Leto: 2022 Vir: Fakulteta za naravoslovje in matematiko (UM FNM)
Št. zadetkov: 8
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