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Povzetek: Al(OH)3 nanoparticles (ATH NPs) and phosphorylated cellulose nanofibrils (PCNFs) were used as user-friendly and comfortable coating components on flame-retardant fabric to improve its thermophysiological comfort and high-intensive heat protection properties. The effect of the PCNF imprinting and its attachment after the post-printing of a hydrophobic polyacrylate (AP) on the same (back side) or the other (front) side of the fabric, with and without the addition of ATH NPs, was considered, to maintain the front side (facing the wearer) as hydrophilic while keeping the back side (facing the outside) hydrophobic. The amount of coatings applied and their patterning were studied, varied with the ATH NPs’ concentration (1.7, 3.3 and 6.7 wt%) and screen mesh size used (60 and 135), based on the coating’ mass, fabric’s air permeability, thickness and microstructure. The reduced moisture build-up (55%), increased the water vapour (13%) and heat (12%) transfer from the skin, were assessed by applying PCNF under the AP, being more pronounced in the case of using a 135 mesh-sized screen, given the smaller, more densely distributed, thinner and imprinted pattern coatings. These effects were further improved by the addition of nanoporous ATH NPs, which allowed more homogeneous spreading of the moisture and its faster transport. Such a treatment also shifted the fabric’s degradation temperature towards higher values (up to 15°C), retained up to 30% of high-heat flux (21 kW/m2), prolonged the time to ignition by 11 s and reduced the total heat released by up to 60%, thereby providing better protection when exposed to the heat, due to the presence of the phosphorous (PCNF) promoted generation of an Al2O3 char acting as a barrier layer, while also reducing the production of heat and generation of smoke by 75%.
Ključne besede: flame-retardant textile, Al(OH)3 nanoparticles, phosphorylated cellulose nanofibrils, screen-printing, thermophysiological comfort, heat protection
Objavljeno v DiRROS: 28.04.2023; Ogledov: 429; Prenosov: 114
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Objavljeno v DiRROS: 13.03.2020; Ogledov: 1851; Prenosov: 436
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Ključne besede: karcinogeneza, dejavniki tveganja, virusne infekcije, bakterijske infekcije, zborniki
Objavljeno v DiRROS: 13.03.2020; Ogledov: 1766; Prenosov: 541
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Povzetek: V članku avtorji prikazujejo rezultate dela Ambulante za bolezni dojk pri ginekološko-porodniškem oddelku Splošne bolnišnice Trbovlje. V devetih letih dela ambulante za bolezni dojk so opravili več kot 10.000 pregledov. Na dodatne preglede so napotili 171 pregledanih žensk. Pri 78 (47 %) napotenih ženskah je bil potrjen rak dojke. Pri 15 (19,2 %) je bil rak dojke v začetnem, neinvazivnem stadiju, pri 63 (80,7 %) pa v invazivnem stadiju bolezni. Pri 24 (30,7 %) so bile metastaze že v regionalnih bezgavkah, pri 48 (61,54 %) bolnicah pa takih metastaz niso ugotovili. Za 5 (6,4 %) bolnic ni podatkov, ugotovili so en primer vnetnega raka. Ugotavljajo 9 intervalnih rakov, kar je 0,09 % od vseh pregledanih žensk oz. 11,3 % ugotovljenih rakov. Ugotavljajo, da je v prikazanem vzorcu rak dojke zelo pogost že pred 50. letom starosti; 28,2 % primerov je bilo v starostni skupini 30–49 let, v skupini 50–69 let pa 47,4 % vseh za rakom na dojki obolelih žensk. To pomeni, da je v starostni skupini 30–69 let za rakom dojke zbolelo 75,6 % vseh obolelih. Ugotavljajo tudi pomanjkljivo povezavo med družinskimi zdravniki, Onkološkim inštitutom in ambulanto za bolezni dojk.
Objavljeno v DiRROS: 31.08.2018; Ogledov: 2945; Prenosov: 679
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Ključne besede: državni gozd, gozdni lesni proizvodi, stroški, gozdno delo, poslovanje, javna gozdarska služba
Objavljeno v DiRROS: 12.07.2017; Ogledov: 2859; Prenosov: 850
Celotno besedilo (6,39 MB)