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Abstract: Leta 1981–1983 je bilo na Rudniku Žirovski vrh pred pričetkom redne proizvodnje izvedeno poskusno odkopavanje uranove rude za preverjanje metod geološke in radiometrične kontrole ter tehničnih metod pridobivanja. Poskusni odkop je bil v bloku 1, na skrajnem severozahodnem delu rudišča v zgornji gubi dvojne S strukture. V tem bloku se je orudenje nahajalo samo v horizontu sivega peščenjaka debeline 20–30 m. Z geološko spremljavo odkopavanja smo potrdili, da so bili peščenjaki odloženi v sekvencah debelih od par dm do več kot 2 m. Sekvenca je običajno pričenjala z debelozrnatim peščenjakom, večkrat so bili na bazi prisotni še klasti kremena in muljevca. Navzgor je debelozrnat peščenjak pogosto prehajal v srednjezrnatega, redkeje pa še v drobnozrnatega in meljevec. V peščenjakih je bila značilna prisotnost organskih drobcev, ki so v diagenezi ustvarjali redukcijsko okolje v katerem se je iz podtalnice izločal uran. Najpogosteje se je orudenje nahajalo v debelozrnatih peščenjakih, običajno v debelejših sekvencah. Orudenje se je zato pojavljalo v več nivojih debelih navadno pod 1m, kjer se je združevalo je skupna debelina presegla tudi 5 m. Dolžina sklenjenega orudenja v vzdolžni smeri je znašala do 150 m, širina od nekaj metrov do več kot 40 m. V vmesnih prekinitvah orudenja smo opazovali, da so peščenjaki iz temnosive in sive barve prehajali v svetlosive in zelenosive, ki so bili le siromašno orudeni ali jalovi. V vzdolžni smeri se je tak prehod zgodil med prerezi P-35 in P-35a, kjer se je tudi zaključilo odkopavanje. V jami sta bila raziskana še prereza P-36 in P-37, kjer pa se je pojavljal pretežno zelenosiv peščenjak z le redkimi lečami siromašnega orudenja. S površinskimi vrtinami sta bila dlje proti zahodu raziskana tudi še dva prereza oddaljena 1,3 in 2,8 km od jamske zgradbe. V teh vrtinah je bilo ugotovljeno nastopanje sivih in zelenosivih peščenjakov z zelo redkimi sledovi orudenja, ki so se menjavali z bolj drobnozrnatimi različki (muljevci), ostanki organske snovi pa so bili v njih zelo redki. Blok 1 je bil zato mejni blok na SZ strani rudišča, predviden za pridobivanje.
Keywords: uranova ruda, poskusno odkopavanje, grödenske klastične kamnine, Žirovski vrh
Published in DiRROS: 15.01.2024; Views: 228; Downloads: 60
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Abstract: The Kvarner fault divides the Microadria (Adria microplate, the Adria stable core) into the Po and Adria segments. The Istra block, which is sandwiched between the right-lateral Kvarner Fault and the left-lateral Sistiana Fault lies at the extreme eastern edge of the Po segment. Both faults run transversely to the Dinarides and reach their thrust boundary in the east. The Microadria has been moving towards the Dinarides since the Middle Miocene. The movement of the Istra block is exposed in relation to the neighbouring blocks, so an extensive pushed area (the Istra Pushed Area) was formed in the External Dinarides, which is bent towards the northeast. It is defined by two flexural zones, one lying in the extension of the Sistiana Fault and the other in the extension of the Kvarner Fault. The structure of the Dinaric thrust border on the north-eastern side of the Istra block is complex. Its prominent structural element is the Črni Kal Anomaly, due to which a zone of increased compression developed within the Istra Pushed Area and transversely to the Dinarides (Kraški rob – Hrušica Traverse), which lies between the Sistiana and Kvarner Flexural Zones. In terms of kinematics, it differs greatly from these two, and various geomorphologically responsive deformations have occurred within it. Mt. Vremščica (1027 m), which represents a transpressive anticline within the wider zone of the Raša Fault is the most prominent. In order to understand the genesis of the Classical Karst relief, it is important to know that the Mt. Vremščica ridge rose from the levelled karst surface.
Keywords: NE Microadria (Adria Microplate), Istra peninsula, Istra Pushed Area, Črni Kal Anomaly, Kraški rob – Mt. Hrušica Traverse, stacked structure, envelope fault
Published in DiRROS: 15.01.2024; Views: 411; Downloads: 168
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Abstract: With the aim to improve the results of treatment of patients who had advanced carcinoma of the uterine cervix and were radically irradiated, a group of 49 patients underwent hysterectomy two to 24 months after completion of radiotherapy, among whom for only 43 patients data were available. Radiotherapy consisted of 40 Gy external beam irradiation to true pelvis, low dose intracavitary treatment to a total dose 40 Gy to point A, and parametrial irradiation 16 to 20 Gy, shielding the place where radioactive sources were positioned during intracavitary therapy. Necrosis, persistent cervical carcinoma, recurrent carcinoma, and in patients younger than 50 years no evidence of disease (NED) with dysplasia were indications for the surgical treatment. Hysterectomy with bilateral oophorectomy was as conservative as possible but severe complications, such as ureteral stenosis (five cases), recto-vaginal fistula (three cases), vesico-vaginal fistula (two cases), recto-vesico-vaginal fistula (one case) occurred. Asymptomatic frozen pelvs as a mild complication occurered in 10 cases. One patient died postoperatively because of dehiscence and abdominal wall necrosis. In 17 (39.5%) of 43 patients complications occurred, although asymtomatic frozen pelvic was not taken in account. We believe that such a combined treatment is only for selected cases.
Keywords: Complications
Published in DiRROS: 15.01.2024; Views: 196; Downloads: 57
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Keywords: melanoma therapy, bleomycin, electric stimulation therapy
Published in DiRROS: 15.01.2024; Views: 277; Downloads: 60
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Published in DiRROS: 15.01.2024; Views: 176; Downloads: 44
Full text (374,86 KB)