Št. zadetkov: 19
Izvirni znanstveni članek
Oznake:
funkcija škode;PVC;dediščinska znanost;degradacija;napoved;aditivi;damage function;heritage science;degradation;prediction;additives;
Yellowing of plastic objects as a consequence of chemical degradation is a common heritage conservation challenge. In the case of poly(vinyl chloride) elimination of hydrogen chloride leads to the formation of polyene sequences that act as chromophores. The objective of this work was to quantitative ...
Leto:
2023
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Magistrsko delo
Oznake:
biogeni amini;spermin;spermidin;oksidativna razgradnja;določanje biogenih aminov;analizne metode;tekočinska kromatografija;masni spektrometer;LC-MS;magistrska dela;
Poznavanje vsebnosti biogenih aminov je zanimivo na različnih področjih. Tako na področju človekovega zdravja novejše raziskave kažejo, da imajo nekateri poliamini antioksidativne lastnosti, blagodejno vplivajo na celične procese in zavirajo staranje. Nekatera živila že naravno vsebujejo določene bi ...
Leto:
2019
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Ni določena
Oznake:
PVC;chromatography;machine learning;classification;regression;spectroscopy;plasticizers;heritage science;preventive conservation;
Non-destructive spectroscopic analysis combined with machine learning rapidly provides information on the identity and content of plasticizers in PVC objects of heritage value. For the first time, a large and diverse collection of more than 100 PVC objects in different degradation stages and of dive ...
Leto:
2022
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Izvirni znanstveni članek
Oznake:
strojno učenje;mehčalo;PVC;IR spektroskopija;zgodovinski predmeti;machine learning;plasticizer;IR spectroscopy;historical objects;
Non-destructive spectroscopic analysis combined with machine learning rapidly provides information on the identity and content of plasticizers in PVC objects of heritage value. For the first time, a large and diverse collection of more than 100 PVC objects in different degradation stages and of dive ...
Leto:
2022
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Izvirni znanstveni članek
Oznake:
agregati;asociacija;velikostno izključitvena kromatografija;PVC;zbirke dediščine;dediščinska znanost;aggregates;association;size-exclusion chromatography;gel-permeation chromatography;heritage collection;heritage science;
The distribution of molar mass of historical and contemporary poly(vinyl chloride) objects was determined using size exclusion chromatography with multi-angle light scattering detection. The weight average molar mass was determined for a collection of 57 samples, ranging from 75 to 186 kg/mol with a ...
Leto:
2023
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Izvirni znanstveni članek
Oznake:
biogeni amini;poliamini;agmatin;spermidin;spermin;kalčki;kalitev;ekstrakcija;sušenje;zmrzovanje;tajanje;kromatografske metode;HPLC;
Sprouts and microgreens are a rich source of various bioactive compounds. Seeds of lentil, fenugreek, alfalfa, and daikon radish seeds were germinated and the contents of the polyamines agmatine (AGM), putrescine (PUT), cadaverine (CAD), spermidine (SPD), and spermine (SPM) in ungerminated seeds, sp ...
Leto:
2020
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Doktorska disertacija
Oznake:
-;
Poly(vinyl chloride) (PVC) objects make up a significant part of contemporary heritage
collections. PVC was identified as one of the polymeric materials that are prone to degradation,
making it necessary to conduct further studies for an improved understanding of the
mechanisms of degradation. ...
Leto:
2024
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Izvirni znanstveni članek
Oznake:
dediščinska znanost;duifuzija in izhlapevanje;migracija;modeliranje;konservatorstvo umetnin;ocena tveganja;razgradnja;heritage science;diffusion-evaporation;migration;modelling;art conservation;risk assessment;degradation;
The predominance of diffusion-evaporation of plasticizers in heritage collections is investigated and an analytical method of studying surface exudates based on dry swabbing is introduced for an in-situ museum survey. Most plasticized heritage PVC objects exhibit no visible surface exudates, indicat ...
Leto:
2025
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Izvirni znanstveni članek
Oznake:
ocetna kislina;emisije;onesnaženost notranjega zraka;celuloza acetat;ionska kromatografija;acetic acid;emission rates;indoor air pollution;cellulose acetate;ion chromatography;
Historic objects made of cellulose acetate are potential sources of indoor pollution in heritage collections. As these objects degrade, volatile organic compounds, including acetic acid, are produced and emitted. High concentrations of acetic acid can increase the degradation rate of both organic an ...
Leto:
2025
Vir:
Fakulteta za kemijo in kemijsko tehnologijo (UL FKKT)
Diplomsko delo
Oznake:
družinsko pravo;otroško pravo;družinski spori;otroci;starši;diplomska dela;
Avtor sledeče diplomske naloge se ukvarjam z vprašanjem ureditve položaja mladoletnih otrok ob razvezi zakonske zveze ter njihovimi pravicami, ki jim pripadajo v vseh postopkih, kjer se odloča o zanje ključnih vprašanjih. V tej zvezi je ključnega pomena, da ureditev na svetovni, evropski in državni ...
Leto:
2013
Vir:
Pravna fakulteta (UM PF)