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Keywords: black-box optimization, algorithms, problem instances, machine learning
Published in DiRROS: 15.09.2023; Views: 336; Downloads: 222
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Published in DiRROS: 14.09.2023; Views: 352; Downloads: 78
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Abstract: Akumulacija 99 mTc-glukoheptonata u plućima analizirana je kod 30 bolesnika, starih od 47-85 godina. Aplicirano je 15-20 mCi Tc-glukoheptonata. Scintigrafija je napravljena 1 sat (rani scintigram) i 5 sati (kasni scintigram) nakon injekcije pomoću gama kamere. Pretraga je izvršena kod 14 bolesnika sa malignomom pluća, kod 9 bolesnika sa akutnom bakterijalnom pneumonijom, kod 6 bolesnika sa Tbc. pulm. chron. i kod 5 osoba bez plućne bolesti. Akumulacija Tc-glukoheptonata je izražena kao kvocijent između aficiranog i neaficiranog ekvilociranog parenhima na kontralateralnoj strani. Srednja vrijednost kvocijenata, nađena kod primarnog plućnog raka, signifikantno je viša (1,28 +/- 0,21) od one kod kronične Tbc (0,85 +/- 0,18) i kod bakterijalne pneumonije (1,08 +/- 0,29). Rasip reyultata kvocijenta kasnijih scintigrama je manji. Rezultat t-testa karcinomske grupe prema grupi sa Tbc. pulm. chron. (t=4,23, p<0,0001) impresivniji je od onoga prema bakterijalnoj pneumoniji (t=2,035, p - 0,05). Zaključujemo da scintigrami pluća, napravljeni sa 99m Tc-glukoheptonatom ukazuju na mogučnost upotrebe tog agensa kao screening metode za otkrivanje primarnog plućnog karcinoma.
Published in DiRROS: 14.09.2023; Views: 263; Downloads: 79
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Keywords: karcinom dojke, radioterpija, funkcija pljuč, komplikacije
Published in DiRROS: 13.09.2023; Views: 297; Downloads: 78
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Abstract: We present a novel % cutoff concept of colorimetric indication of relative humidity based on dye dissolution in condensed water in capillaries of selectively functionalized mesoporours host SiO2 material. Consistently high levels of indoor air humidity induces mold and algae growth which represent a potential risks for human health and have deteriorating effect on walls as well. Simple localized humidity detection of high humidity with naked eye especially at places with low air circulation, where growth of mold usually starts first, is therefore highly desirable. The reporting dye was integrated in the non-functionalized mesoporous silica matrix with different pore diameters and selective-functionalized mesoporous silica material. After exposure to the environment of different air humidities the dye dissolved in water causing color change of adsorbent. With the use of adsorbents with different mesopore diameters high ability to tune the value of relative humidity when complete capillary condensation occurred was achieved. Materials with pore diameters of 3.0%nm, 3.5%nm and 7.0%nm exhibit gradual color change when reaching relative humidity up to 55, 79 and 88 RH% respectively. After selective methylation of the material with 7.0%nm pore diameter, non-gradual cutoff color change was achieved. Sample exhibited color change at narrow range of relative humidity (cutoff color change). Due to selective functionalized outer surface the dye dissolution occur only in condensed water in pores and therefore provide colorimetric indication only in this range. Selectively modified silica material has a great potential for a straightforward detection of high humid environment.
Keywords: turn-on colorimetric probe, selective functionalization, mesoporous silica, relative humidity, capillary condensation
Published in DiRROS: 05.09.2023; Views: 394; Downloads: 275
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