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Iskalni niz: "ključne besede" (in-situ) .

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1.
Quantitative in situ X-ray diffraction analysis of early hydration of belite-calcium sulfoaluminate cement at various defined temperatures
Maruša Mrak, Christian L. Lengauer, Sabina Dolenec, 2021, izvirni znanstveni članek

Povzetek: The influence of temperature on the early hydration of belite-calcium sulfoaluminate cements with two different calcium sulfate to calcium sulfoaluminate molar ratios was investigated. The phase composition and phase assemblage development of cements prepared using molar ratios of 1 and 2.5 were studied at 25, 40 and 60 ◦C by in situ X-ray powder diffraction. The Rietveld refinement method was used for quantification. The degree of hydration after 24 h was highest at ambient temperatures, but early hydration was significantly accelerated at elevated temperatures. These differences were more noticeable when we increased the temperature from 25 ◦C to 40 ◦C, than it was increased from 40 ◦C to 60 ◦C. The amount of calcium sulfate added controls the amount of the precipitated ettringite, namely, the amount of ettringite increased in the cement with a higher molar ratio. The results showed that temperature also affects full width at half maximum of ettringite peaks, which indicates a decrease in crystallite size of ettringite at elevated temperatures due to faster precipitation of ettringite. When using a calcium sulfate to calcium sulfoaluminate molar ratio of 1, higher d-values of ettringite peaks were observed at elevated temperatures, suggesting that more ions were released from the cement clinker at elevated temperatures, allowing a higher ion uptake in the ettringite structure. At a molar ratio of 2.5, less clinker is available in the cement, therefore these differences were not observed.
Ključne besede: in situ X-ray diffraction, hydration, temperature, cement, rietveld analysis
Objavljeno v DiRROS: 26.06.2023; Ogledov: 185; Prenosov: 117
.pdf Celotno besedilo (4,59 MB)
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Mutational burden, MHC-I expression and immune infiltration as limiting factors for in situ vaccination by TNF[alfa] and IL-12 gene electrotransfer
Urška Kamenšek, Katja Uršič Valentinuzzi, Boštjan Markelc, Maja Čemažar, Vita Šetrajčič Dragoš, Gregor Serša, 2021, izvirni znanstveni članek

Povzetek: In situ vaccination is a promising immunotherapeutic approach, where various local ablative therapies are used to induce an immune response against tumor antigens that are released from the therapy-killed tumor cells. We recently proposed using intratumoral gene electrotransfer for concomitant transfection of a cytotoxic cytokine tumor necrosis factor-% (TNF%) to induce in situ vaccination, and an immunostimulatory cytokine interleukin 12 (IL-12) to boost the primed immune response. Here, our aim was to test the local and systemic effectiveness of the approach in tree syngeneic mouse tumor models and associate it with tumor immune profiles, characterized by tumor mutational burden, immune infiltration and expression of PD-L1 and MHC-I on tumor cells. While none of the tested characteristic proved predictive for local effectiveness, high tumor mutational burden, immune infiltration and MHC-I expression were associated with higher abscopal effectiveness. Hence, we have confirmed that both the abundance and presentation of tumor antigens as well as the absence of immunosuppressive mechanisms are important for effective in situ vaccination. These findings provide important indications for future development of in situ vaccination based treatments, and for the selection of tumor types that will most likely benefit from it.
Ključne besede: in situ vaccination, gene electrotransfer, interleukin 12, tumor necrosis factor [alfa]
Objavljeno v DiRROS: 19.09.2022; Ogledov: 406; Prenosov: 135
.pdf Celotno besedilo (1,78 MB)

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Retrieval of vertical mass concentration distributions
Longlong Wang, Samo Stanič, Klemen Bergant, William Eichinger, Griša Močnik, Luka Drinovec, Janja Vaupotič, Miloš Miler, Mateja Gosar, Asta Gregorič, 2019, izvirni znanstveni članek

Povzetek: Aerosol vertical profiles are valuable inputs for the evaluation of aerosol transport models, in order to improve the understanding of aerosol pollution ventilation processes which drive the dispersion of pollutants in mountainous regions. With the aim of providing high-accuracy vertical distributions of particle mass concentration for the study of aerosol dispersion in small-scale valleys, vertical profiles of aerosol mass concentration for aerosols from different sources (including Saharan dust and local biomass burning events) were investigated over the Vipava valley, Slovenia, a representative hot-spot for complex mixtures of different aerosol types of both anthropogenic and natural origin. The analysis was based on datasets taken between 1–30 April 2016. In-situ measurements of aerosol size, absorption, and mass concentration were combined with lidar remote sensing, where vertical profiles of aerosol concentration were retrieved. Aerosol samples were characterized by SEM-EDX, to obtain aerosol morphology and chemical composition. Two cases with expected dominant presence of different specific aerosol types (mineral dust and biomass-burning aerosols) show significantly different aerosol properties and distributions within the valley. In the mineral dust case, we observed a decrease of the elevated aerosol layer height and subsequent spreading of mineral dust within the valley, while in the biomass-burning case we observed the lifting of aerosols above the planetary boundary layer (PBL). All uncertainties of size and assumed optical properties, combined, amount to the total uncertainty of aerosol mass concentrations below 30% within the valley. We have also identified the most indicative in-situ parameters for identification of aerosol type.
Ključne besede: valley air pollution, aerosol vertical distributions, lidar remote sensing, in-situ measurements, aerosol identification
Objavljeno v DiRROS: 03.03.2022; Ogledov: 603; Prenosov: 226
URL Povezava na celotno besedilo

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Adenocarcinoma in situ cervicis uteri
Alemka Brnčić-Fischer, Herman Haller, 2015, objavljeni strokovni prispevek na konferenci

Ključne besede: colposcopy, adenocarcinoma in situ cervicis uteri, glandular lesions
Objavljeno v DiRROS: 26.05.2020; Ogledov: 1066; Prenosov: 327
.pdf Celotno besedilo (435,01 KB)

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Adenokarcinom in situ : prikaz primera
Urška Ferletič, 2013, objavljeni strokovni prispevek na konferenci

Ključne besede: adenokarcinom in situ, cerviks, bris materničnega vratu
Objavljeno v DiRROS: 07.04.2020; Ogledov: 1486; Prenosov: 457
.pdf Celotno besedilo (135,07 KB)

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