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Query: "author" (Gregor %C5%BDerjav) .

81 - 90 / 375
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81.
82.
83.
Presejanje in zgodnje odkrivanje raka
2006, proceedings of professional or unreviewed scientific conference contributions

Published in DiRROS: 07.12.2023; Views: 273; Downloads: 72
.pdf Full text (15,22 MB)

84.
85.
New discoveries in prostate cancer pathogenesis
Gregor Mikuž, 2006, not set

Keywords: rak (medicina), prostata, novotvorbe, diagnostika
Published in DiRROS: 05.12.2023; Views: 184; Downloads: 52
.pdf Full text (500,60 KB)

86.
Pozicioniranje in kontrola kakovosti mamograma
Zvonko Krajnc, Miljeva Rener, Alenka Rataj, Patricija Rusjan, Gregor Novak, Katja Čebulj, 2004, published scientific conference contribution

Abstract: Izhodišča. Pravilno pozicioniranje je predpogoj za zagotavljanje kakovosti mamografskih slik. Zato je pomembno, da dobro poznamo anatomijo in tehnike pozicioniranja, slikanja in razvijanja. Zaključki. Da bi dosegli optimalen prikaz tkiv, rnorarno pravilno nastaviti nosilec kasete in kompresorij ter izkoristiti premakljivost dojk, pomembna pa je tudi pravilna uporaba aparatur.Ob izvajanju mamografije moramo nujno upoštevati kriterije za kontrolo kakovosti. Pri tem nam pomaga pravilnik o pogojih, ki jih morajo izpolnjevati primarni centri za dojke v Republiki Sloveniji, ter evropske smernice. S kontrolo kakovosti bomo u Sloveniji zvišali kvaliteto in s tem prispevali k čirn zgodnejšemu odkrivanju sprememb na dojkah.
Published in DiRROS: 01.12.2023; Views: 247; Downloads: 61
.pdf Full text (2,14 MB)

87.
Stereotaktična biopsija - cytoguide
Gregor Novak, Tomaž Vargazon, Beti Jokan, 2001, published scientific conference contribution

Abstract: Rak dojke je v Sloveniji najpogostejši rak pri ženskah. Mamografija je pomembna pri zgodnjem odkrivanju raka v dojkah. Z mamografijo lahko odkrijemo rak dojke v zgodnjem ali celo preinvazivnem stadiju. Najzaneslivejša metoda, skatero pojasnimo naravo patološkega procesa, je odvzem tkiva in mikroskopska preiskava. Netipljive lezije, ki so vidne na mamografskih posnetkih, so dostopne stereotaktični biopsiji. Lego tumorja in mesto punkcije nam izračuna računalnik. Natančna in hitra markacija tumorja je odvisna od znanja in izkušenj inženirja radiologije: Na osnovi rezultatov citološke in (ali) histološke punkcije se operater in radiolog odločita za odstranitev tumorja. Radiolog markira tumor z žico, barvilom ali radioaktivnim izotopom.
Published in DiRROS: 30.11.2023; Views: 228; Downloads: 56
.pdf Full text (901,13 KB)

88.
Naše izkušnje z dnevno kontrolo razvijanja filmov
Gregor Novak, Zvonko Kranjc, Sebastjan Korat, 2001, published professional conference contribution

Abstract: Izvajanje kontrole kakovosti se je na Onkološkem inštitutu začelo z letom 2000. Njen namen je bil dvigniti raven obdelave filmov in odkriti napake v obdelavi filmov še preden bi te utegnile pomembneje vplivati na kakovost mamogramov. V naslednjem sestavku je na kratko opisan postopek določitve počrnitvene krivulje in parametrov s katerimi dnevno spremljamo kakovost obdelave filmov. Priložena je tudi tabela s pomočjo katere lahko prepoznamo vzroke morebitnih sprememb in jih odpravimo.
Published in DiRROS: 30.11.2023; Views: 228; Downloads: 59
.pdf Full text (256,76 KB)

89.
90.
Activation and repassivation of stainless steels in artificial brines as a function of pH
Emir Mujanović, Bojan Zajec, Tadeja Kosec, Andraž Legat, Stefan Hönig, Gerald Zehethofer, Gregor Mori, 2019, original scientific article

Abstract: When planning oil wells with stainless steel components, two possible reasons for depassivation have to be considered-chemical depassivation caused by acidizing jobs and mechanical depassivation caused by various tools and hard particles. The study explores conditions causing chemical activation of investigated steels and circumstances under which repassivation occurs after activation. The main focus of the study is to determine, how quickly various steels can repassivate under different conditions and to find pH values where repassivation will occur after depassivation. The investigated steels were ferritic (martensitic or bainitic) in the cases of 13Cr, 13Cr6Ni2Mo, and 17Cr4Ni2Mo, austenitic in the case of 17Cr12Ni2Mo, and duplex (austenitic and ferritic) in the case of 22Cr5Ni3Mo. Potentiodynamic experiments were employed to obtain electrochemical properties of investigated steels, followed by immersion tests to find ultimate conditions, where the steels still retain their passivity. After obtaining this information, scratch tests were performed to study the repassivation kinetics. It was found that repassivation times are similar for nearly all investigated steels independent of their chemical composition and microstructure.
Keywords: stainless steels, activation, repassivation
Published in DiRROS: 21.11.2023; Views: 266; Downloads: 127
.pdf Full text (4,47 MB)
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