21. Complete nonsingular holomorphic foliations on Stein manifoldsAntonio Alarcón, Franc Forstnerič, 2024, original scientific article Abstract: Let $X$ be a Stein manifold of complex dimension $n \ge 1$ endowed with a Riemannian metric ${\mathfrak g}$. We show that for every integer $k$ with $\left[\frac{n}{2}\right] \le k \le n-1$ there is a nonsingular holomorphic foliation of dimension $k$ on $X$ all of whose leaves are topologically closed and ${\mathfrak g}$-complete. The same is true if $1\le k \left[\frac{n}{2}\right]$ provided that there is a complex vector bundle epimorphism $TX\to X \times \mathbb{C}^{n-k}$. We also show that if $\mathcal{F}$ is a proper holomorphic foliation on $\mathbb{C}^n$ $(n > 1)$ then for any Riemannian metric ${\mathfrak g}$ on $\mathbb{C}^n$ there is a holomorphic automorphism $\Phi$ of $\mathbb{C}^n$ such that the image foliation $\Phi_*\mathcal{F}$ is ${\mathfrak g}$-complete. The analogous result is obtained on every Stein manifold with Varolin's density property.
Keywords: Stein manifolds, complete holomorphic foliations, density property
Published in DiRROS: 19.02.2024; Views: 167; Downloads: 59
 Full text (433,06 KB)
This document has many files! More... |
22. Breast cancer and breast health awareness as an evolving health promotion conceptAndrej Plesničar, Viljem Kovač, Božo Kralj, 2004, original scientific article Abstract: Background. Breast cancer is the most frequent malignant disease in the majority of developed countries. In the last few years the introduction of mammography screening programmes has resulted in an improved survival of breast cancer patients. However, the incidence of the disease in these countries is still on the increase. Present focus on secondary breast cancer prevention activities, consisting of early detection and treatment, cannot ensure a decrease of breast cancer incidence. Improved breast health awarenesscould therefore represent a part of specific health promotion activities aimed at decreasing the incidence of breast cancer. Conclusions. Indeveloped countries breast cancer is a significant health care issue. Secondary breast cancer prevention activities should therefore be complementedby specific health promotion activities in order to reduce its incidence in the future. Primary breast cancer prevention would include healthpromotion activities aimed at enhancement of the individual as well as collective breast health awareness. Properly enlightened members of the influential population groups could attain appropriate changes in the fields of legislation, taxation, customs and commercial regulations that would enablewomen to control their own breast health.
Published in DiRROS: 07.02.2024; Views: 181; Downloads: 40
Full text (84,20 KB) |
23. |
24. Dispersoids in Al-Mg-Si alloy AA 6086 modified by Sc and YFranc Zupanič, Sandi Žist, Mihaela Albu, Ilse Letofsky-Papst, Jaka Burja, Maja Vončina, Tonica Bončina, 2023, original scientific article Keywords: aluminium alloy, heat treatment, microstructure, dispersoids, dilatometry, DSC, hardness
Published in DiRROS: 02.02.2024; Views: 145; Downloads: 79
Full text (11,03 MB)
This document has many files! More... |
25. Effect of sucrose concentration on streptococcus mutans adhesion to dental material surfacesAnamarija Zore, Franc Rojko, Nives Matijaković Mlinarić, Jona Veber, Aleksander Učakar, Roman Štukelj, Andreja Pondelak, Andrijana Sever Škapin, Klemen Bohinc, 2024, original scientific article Abstract: Enamel demineralization, known as dental caries, is instigated by the bacterium Streptococcus mutans, which generates acid during carbohydrate metabolism. Among carbohydrates, sucrose is the most cariogenic and capable of biofilm formation. This study aimed to explore and comprehend Streptococcus mutans’ adherence to two prevalent dental material surfaces, i.e., a cobalt–chromium(Co-Cr) alloy and a resin-based composite, under the influence of various sucrose concentrations. To understand bacterial adhesion, the surfaces were characterized using profilometry, tensiometry, and surface charge measurements. Bacterial adhesion was evaluated using scanning electron microscopy and crystal violet dye methods. Results revealed that the composite surface exhibited greater rough-ness compared with the Co-Cr alloy surface. Both surfaces displayed hydrophilic properties and a negative surface charge. Bacterial adhesion experiments indicated lower bacterial adherence to the Co-Cr alloy than to the composite surface before the addition of sucrose. However, the introduction of sucrose resulted in biofilm development on both surfaces, showcasing a similar increase in bacterial adhesion, with the highest levels being observed at a 5% sucrose concentration in the bacterial suspension. In conclusion, the findings suggest sucrose-rich foods could facilitate bacterial adaptation despite less favorable surface characteristics, thereby promoting biofilm formation.
Keywords: bacterial adhesion, streptococcus mutans, dental material surfaces, sucrose concentration
Published in DiRROS: 31.01.2024; Views: 187; Downloads: 73
Full text (4,28 MB)
This document has many files! More... |
26. LymphangioleiomyomatosisFranc Anderluh, 2002, review article Abstract: Background. Lymphangioleiomyomatosis is a rare disease of unknown origin, which affects women in their reproductive period. It is characterised by non-neoplastic proliferation of atypical smooth muscle cells in the lung parenchyma, lymphatic vessels and mediastinal and abdominal lymph nodes. The most common presenting symptoms are spontaneous pneumothorax, dyspnea, hemoptysis and chylothorax. Conclusions. High-resolution computed tomography (HRCT) and open lung biopsy followed by the immunohistologic studies are two diagnostic procedures with which diagnosis can be confirmed. Various treatmentmodalities are applied, particularly hormonal therapy, though their efficacy remain unknown. The prognosis of patients is bad.
Published in DiRROS: 31.01.2024; Views: 152; Downloads: 28
Full text (76,06 KB) |
27. Environment and breast cancer - the role of xenooestrogens in breast cancerAndrej Plesničar, Branko Družina, Viljem Kovač, Božo Kralj, 2002, original scientific article Abstract: The survival rate of breast cancer patients has not changed much in the last few decades in developed countries. In order to improve the efficacy of breast cancer prevention and treatment, the role of xenooestrogens in the mechanisms of its development has been evaluated. These industrial chemical bear little structural resemblance to each other and bind to the oestrogen receptors of exposed cells and/or trigger oestrogenic responses in laboratory test systems. Exposure to xenooestrogens has been regarded as a risk factor for carcinogenesis and a preventable cause of breast carcinoma. Several epidemiological and experimental studies in in vivo and in vitro conditions of the influence of xenooestrogens on the occurrence of breast cancer have been conducted in the last decades and have shown ambiguous results. No increase of breast carcinoma incidence could be found in women who were exposed to relatively high concentrations of xenooestrogens for extended periods and small quantities of these compounds that are present in the environment probably cannot act as etiological agents for the occurence of this disease. A multi step approach is suggested regarding the sequence of studies and measures that should be taken to further assess the importance of xenooestrogens on breast cancer carcinogenesis.
Keywords: dojka, ksenoestrogeni, novotvorbe
Published in DiRROS: 31.01.2024; Views: 138; Downloads: 37
Full text (96,95 KB) |
28. Radical irradiation of the prostate. Combination of percutaneous irradiation and irradiation with LDR Ir-192 implantsBorut Kragelj, Franc Guna, Janez Burger, 2001, original scientific article Abstract: Background. The irradiation of the carcinomas of the prostate with the doses above the tolerable ones of standard radiotherapy improves the local control of the disease. The aim of this study is to determine the acute toxicity and tolerability of the high-dose prostate irradiation combining external beam radiotherapy (EBRT) and interstitial low dose rate (LDR) brachyradiotherapy (BRT) Ir-192 of the prostate. Material and methods. We examined medical records of 8 patients with localized carcinoma of the prostate (T2-T3 No-x Mo)treated from August 1999 until February 2000. The initial PSA was 2.7-37.5 ng/ml (median 13.7) and Gleason score 4-9 (median 7). Radiotherapy consisted of 48.6-50.4 Gy of EBRT to the prostate and seminal vesicles (4 patients) or the whole pelvis (4 patients) and 20.0-28.0 Gy of interstital LDR Ir-192 BRT given as a single fraction, fluoroscopic guided transperineal Implantation of the prostate. The cumulative doses of percutaneous and interstitial irraditations to the prostate were 68.6 - 79.1 Gy. Results. Acute toxic effects of irradiation though observed in all patients were of only mild intensity. According to the RTOG criteria, 20/30 toxicities were assessed as grade 1, 9/30 as grade 2, and 1/30 as grade 3. In none of the patients, toxic effects required any specific modification of the treatment regimen. Conclusions. The very first experiences indicate moderate toxicity and optimaltolerance of the treatment by patients. An improvement of implantation techniques may be expected with regular CT controls of the implants and extra attentive care of the implants in the urethra region.
Published in DiRROS: 25.01.2024; Views: 169; Downloads: 41
Full text (223,53 KB) |
29. Resections of pelvic bone and sacrum, Ljubljana experienceJanez Novak, Marjana Čuček-Pleničar, Darja Eržen, Franc Srakar, Mojca Senčar, Boštjan Baebler, Jožica Červek, Alenka Vodnik-Cerar, Matej Bračko, Živa Pohar-Marinšek, Jožica Anžič, 1997, original scientific article Published in DiRROS: 16.01.2024; Views: 205; Downloads: 46
Full text (156,79 KB) |
30. |
