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1.
Corporate Social Responsibility (CSR) in Green and Digital Transition: Legal and Sustainability Issues : scientific conference
2023, druge monografije in druga zaključena dela

Objavljeno v DiRROS: 11.12.2023; Ogledov: 164; Prenosov: 79
.pdf Celotno besedilo (1,89 MB)
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2.
Varnost in zagotavljenje kakovosti pri lokalizacijah netipljivih tumorjev z izotopi
Anastazija Šelih, Anita Plausteiner, 2023, objavljeni znanstveni prispevek na konferenci

Ključne besede: onkološki bolniki, izotopi, zdravstvena nega
Objavljeno v DiRROS: 22.11.2023; Ogledov: 201; Prenosov: 75
.pdf Celotno besedilo (467,67 KB)

3.
The effect of crystalline waterproofing a dmixtures on the self-healing and permeability of concrete
Anita Gojević, Vilma Ducman, Ivanka Netinger Grubeša, Ana Baričević, Ivana Banjad Pečur, 2021, izvirni znanstveni članek

Povzetek: This paper investigates the effectiveness of a specific crystalline waterproofing admixture (CWA) in concrete as a function of a water–binder ratio. Four concrete mixes with and without CWA were prepared; two of them with a water–binder ratio of 0.45 and two of them with a water– binder ratio of 0.55. Water permeability and compressive strength were tested on hardened concrete specimens and self-healing of cracks over time was observed. Cement paste and CWA paste were prepared to clarify the results obtained on the concrete specimens. SEM and EDS and XRD and FTIR were performed on the hardened pastes to explain the mechanism of CWA working. The results show that the addition of CWA had no significant effect on the compressive strength of the concrete, but reduced the water penetration depth in the concrete, and the reduction was more effective for mixes with lower water–binder ratio. Regarding the self-healing effect, it can be concluded that the addition of CWA improves the crack healing in concrete, but the efficiency of self-healing is highly dependent on the initial crack width. The mechanisms involved in the reduction of water penetration depth and crack healing in concrete can be explained by different mechanisms; one is creation of the CSH gel from unreacted clinker grains, then formation carbonate, and additional mechanism is gel formation (highly expansive Mg-rich hydro-carbonate) from magnesium based additives. The presence of sodium silicate, which would transform into carbonate/bicarbonate, also cannot be excluded.
Ključne besede: slag, self healing concrete, crystal admixture, microstructural analysis
Objavljeno v DiRROS: 03.07.2023; Ogledov: 258; Prenosov: 181
.pdf Celotno besedilo (4,84 MB)
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4.
Influence of weathering on the degradation of cellulose acetate microplastics obtained from used cigarette butts
Branka Mušič, Anita Jemec Kokalj, Andrijana Sever Škapin, 2023, izvirni znanstveni članek

Povzetek: Cellulose acetate is used in many applications, including for cigarette filters. Unfortunately, unlike cellulose, its (bio)degradability is under question, yet it often ends up uncontrolled in the natural environment. The main purpose of this study is to compare the effects of weathering on two types of cigarette filter (classic filters and newer filters that have more recently arrived on the market) following their use and disposal in nature. Microplastics were prepared from polymer parts of used (classic and heated tobacco products—HTP) cigarettes and artificially aged. TG/DTA, FTIR, and SEM analyses were performed both before and after the aging process. Newer tobacco products contain an additional film made of a poly(lactic acid) polymer which, like cellulose acetate, burdens the environment and poses a risk to the ecosystem. Numerous studies have been conducted on the disposal and recycling of cigarette butts and cigarette butt extracts, revealing alarming data that have also influenced the decisions of the EU, who addressed the disposal of tobacco products in the EU Directive (EU) 2019/904. Despite this, there is still no systematic analysis in the literature evaluating the impact of weathering (i.e., accelerated aging) on the degradation of cellulose acetate in classic cigarettes compared with that in newer tobacco products that have recently appeared on the market. This is of particular interest given that the latter have been promoted as being healthier and environmentally friendly. The results show that in cellulose acetate cigarette filters the particle size decreased after accelerated aging. Also, the thermal analysis revealed differences in the behavior of the aged samples, while the FTIR spectra showed no shifts in the position of the peaks. Organic substances break down under UV light, which can be seen by measuring the color change. The PLA film was found to be more stable than cellulose acetate under the influence of UV light.
Ključne besede: cellulose acetate, cigarette filters, microplastics, artificial weathering, polymer degradation
Objavljeno v DiRROS: 30.06.2023; Ogledov: 332; Prenosov: 205
.pdf Celotno besedilo (5,78 MB)
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5.
Environmental hazard of polypropylene microplastics from disposable medical masks : acute toxicity towards Daphnia magna and current knowledge on other polypropylene microplastics
Anita Jemec Kokalj, Andraž Dolar, Damjana Drobne, Marjan Marinšek, Matej Dolenec, Luka Škrlep, Gregor Strmljan, Branka Mušič, Andrijana Sever Škapin, 2022, izvirni znanstveni članek

Povzetek: The COVID-19 pandemic has increased the use of disposable plastics, including medical masks, which have become a necessity in our daily lives. As these are often improperly disposed of, they represent an important potential source of microplastics in the environment. We prepared microplastics from polypropylene medical masks and characterised their size, shape, organic chemical leaching, and acute toxicity to the planktonic crustacean Daphnia magna. The three layers of the masks were separately milled and characterised. Each of the inner frontal, middle filtering, and outer layers yielded different types of microplastics: fibres were obtained from the inner and outer layer, but irregular fragments from the middle layer. The shape of the obtained microplastics differed from the initial fibrous structure of the intact medical mask layers, which indicates that the material is deformed during cryo-milling. The chemical compositions of plastics-associated chemicals also varied between the different layers. Typically, the inner layer contained more chemicals related to antimicrobial function and flavouring. The other two layers also contained antioxidants and their degradation products, plasticisers, cross-linking agents, antistatic agents, lubricants, and non-ionic surfactants. An acute study with D. magna showed that these microplastics do not cause immobility but do physically interact with the daphnids. Further long-term studies with these microplastics are needed using a suite of test organisms. Indeed, studies with other polypropylene microplastics have shown numerous adverse effects on other organisms at concentrations that have already been reported in the environment. Further efforts should be made to investigate the environmental hazards of polypropylene microplastics from medical masks and how to handle this new source of environmental burden.
Ključne besede: COVID-19 pandemic, plastics-associated chemicals, Daphnia magna, fibres, fragments, nanofibres, polypropylene microplastics, single-use plastic
Objavljeno v DiRROS: 05.05.2023; Ogledov: 320; Prenosov: 200
.pdf Celotno besedilo (3,28 MB)
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6.
7.
Vloga diplomirane medicinske sestre pri ultrazvočno vodeni biopsiji dojke
Anita Plausteiner, Anastazija Šelih, 2022, objavljeni povzetek strokovnega prispevka na konferenci

Ključne besede: rak dojke, onkologija, zdravstvena nega
Objavljeno v DiRROS: 27.01.2023; Ogledov: 341; Prenosov: 91
.pdf Celotno besedilo (36,91 KB)

8.
Mobilna paliativna enota Onkološkega inštituta Ljubljana
Maja Ebert Moltara, Marjana Bernot, Maja Ivanetič Pantar, Nena Golob, Marta Globočnik Kukovica, Slavica Lahajnar, Branka Stražišar, Iztok Potočnik, Anita Riđić, Suzana Crljenica, Aleš Krajnc, Robert Terbovšek, 2022, pregledni znanstveni članek

Povzetek: Izhodišče: Del celostne obravnave bolnika z napredovalim rakom je tudi paliativna oskrba, ki bolniku in njegovim bližnjim omogoča kakovostno življenje. Paliativna oskrba se izvaja na dveh ravneh: osnovni in specializirani. Na Onkološkem inštitutu Ljubljana v okviru specializirane paliativne oskrbe izvajamo več dejavnosti: bolnišnično obravnavo bolnikov z najkompleksnejšimi težavami, ambulantno obravnavo za zgodnjo paliativno oskrbo, konziliarno (svetovalno) dejavnost in za bolnike doma telefonsko podporo ter obiske na domu. Mobilna paliativna enota je najnovejša dejavnost, ki se izvaja od septembra 2021. Metode: Analizirali smo podatke vseh bolnikov, vključenih v specializirano paliativno oskrbo med septembrom 2021, od pričetka delovanja mobilne paliativne enote, in koncem avgusta 2022. Opazovali smo starost, spol, kraj stalnega prebivališča, diagnozo ter kraj smrti in primerjali skupino bolnikov, ki so bili obravnavani v okviru specializirane paliativne oskrbe s podporo obiskov na domu, in skupino brez nje. Rezultati: Med opazovanim obdobjem je bilo v vse dejavnosti specializirane paliativne oskrbe Onkološkega inštituta vključenih 1086 bolnikov, od tega smo pri 347 bolnikih (32 % vseh) opravili 574 obiskov na domu (povprečno 1,7 obiska na bolnika (razpon 1–8)). 317 (91 %) bolnikov je imelo svoje stalno prebivališče v osrednjeslovenski regiji, 9 % obiskov je bilo izvedenih izven meja osrednjeslovenske regije. Primerjava skupin bolnikov, napotenih v specializirano paliativno oskrbo z vključitvijo mobilne paliativne enote ali brez nje, jasno kaže večji delež umrlih v domačem okolju, kadar podporo izvajamo tudi z obiski na domu (80 % v primerjavi z 62 %). Zaključek: Mobilna paliativna enota predstavlja pomemben element mreže paliativne oskrbe in zagotavlja pogostejše umiranje v domačem okolju.
Ključne besede: paliativna oskrba, umiranje, mobilna paliativna enota, onkologija
Objavljeno v DiRROS: 06.12.2022; Ogledov: 436; Prenosov: 118
.pdf Celotno besedilo (312,81 KB)

9.
Merjenje tlakov plevralnega prostora med razbremenilno punkcijo (plevralna manometrija) kot varna in objektivna metoda pri ocenjevanju vpliva plevralnega izliva na izražanje simptomov
Anita Meglič, Katja Adamič, Vladimir Dimitrić, Vesna Nikolić, Aleš Rozman, Mateja Marc-Malovrh, 2022, izvirni znanstveni članek

Povzetek: Izhodišča: Bolniki s plevralnim izlivom pogosto potrebujejo razbremenilno plevralno punkcijo (RPP), po kateri navajajo bolj ali manj izrazito olajšanje dispneje. Zaradi varnosti se priporoča, da se med RPP odstrani do 1.500 mL tekočine. Metode: V raziskavo smo vključili 96 bolnikov, pri katerih je bila potrebna RPP. Zbirali smo ocene stopnje dispneje na lestvici VAS pred, takoj po in 2 uri po RPP, pri 73 bolnikih pa še 24 ur po RPP ter beležili količino odstranjene tekočine. Med RPP smo z vodnim manometrom merili plevralne tlake, iz katerih smo izračunali elastanco plevralnega prostora in na podlagi meritev bolnike razdelili v skupine z različnimi elastančnimi krivuljami. Rezultati: Med začetnim plevralnim tlakom in količino odstranjene tekočine ter olajšanjem dispneje po opravljeni RPP smo ugotovili statistično značilno povezanost. Pri največjem deležu bolnikov smo RPP zaključili zaradi pojava simptomov, zaradi meritev plevralnega tlaka pa smo RPP prekinili pri 16 bolnikih (16,7 %). V skupino z normalno elastančno krivuljo smo uvrstili 74 bolnikov, nezmožnost razpenjanja pljuč pa smo ugotovili pri 22 bolnikih. Med RPP ni bilo pomembnih zapletov, kljub temu da smo več kot 1.500 mL izliva odstranili pri 32 (33 %) bolnikih. Zaključek: Višji začetni plevralni tlak je šibko povezan z višjo začetno stopnjo dispneje in večjim olajšanjem dispneje po opravljeni RPP. Najbolj uporabna je dinamika sprememb plevralnega tlaka, s katero lahko že med RPP prepoznamo nezmožnost razpenjanja pljuč. Med RPP s plevralno manometrijo lahko varno odstranimo tudi več kot 1.500 mL tekočine
Ključne besede: pljuča, dispneja, vizualna analogna lestvica, elastančne krivulje, nezmožnost razpenjanja pljuč
Objavljeno v DiRROS: 29.08.2022; Ogledov: 405; Prenosov: 148
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10.
Urban forests for resilient cities : book of abstracts
2016, druge monografije in druga zaključena dela

Ključne besede: mestno drevje, urbano gozdarstvo, primestni gozdovi, zborniki, povzetki
Objavljeno v DiRROS: 03.11.2021; Ogledov: 1024; Prenosov: 752
.pdf Celotno besedilo (4,38 MB)
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