131. Dendrokronološke raziskave na Založnici - najmlajši znani bakrenodobni koliščarski naselbini na Ljubljanskem barjuKatarina Čufar, Anton Velušček, 2003, original scientific article Abstract: Predstavljamo rezultate raziskav lesa in drugih arheoloških najdb z zaščitnih izkopavanj v jarkih na ostankih bakrenodobne-eneolitske koliščarske naselbine Založnica pri Kamniku pod Krimom na Ljubljanskem barju. Od 1315 vzorcev lesa smo jih dendrokronološko raziskali 35%. Sestavili smo dve jesenovi (Fraxinus sp.) in eno hrastovo (Quercus sp.) kronologijo širin branik. Rekonstruirali smo gradbene aktivnosti na naselbini, ki so trajale 90 let. Ugotovili smo, da so se časovno prepletale z aktivnostmi na 10 km oddaljeni naselbini Parte, ki je obstajala istočasno. Na osnovi radiokarbonskih datacij konec gradbenih aktivnosti na Založnici datiramo v 25. stoletje pr. Kr. Naselbina v zadnjih 40 letih obstoja tvori najmlajšo znano eneolitsko koliščarsko naselbino na Ljubljanskem barju in v Sloveniji. Na podlagi datiranega lesa in primerjave drugih arheoloških najdb utemeljujemo uvrstitev naselbine v kulturo Somogyvár-Vinkovci, kar je novost pri interpretaciji poselitvenih sprememb pred nastopom bronaste dobe na območju Ljubljanskega barja, Slovenije in sosednjih dežel.
Keywords: kolišča, Ljubljansko barje, bakrena doba, arheologija, radiokarbonsko datiranje, dendrokronologija, arheološki les, hrast, jesen (drevo)
Published in DiRROS: 17.11.2020; Views: 1187; Downloads: 347
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132. Konflikti z divjadjo na nelovnih površinah v Sloveniji v obdobju 2008-2018Katarina Flajšman, Ajša Alagić, Elena Bužan, Matevž Adamič, Boštjan Pokorny, 2020, professional article Keywords: lov, lovstvo, divjad, upravljanje z divjado, nelovne površine, škoda, konflikt
Published in DiRROS: 08.10.2020; Views: 1619; Downloads: 498
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133. Dynamic contrast-enhanced MRI of malignant pleural mesothelioma : a comparative study of pharmacokinetic models and correlation with mRECIST criteriaMartina Vivoda Tomšič, Sotirios Bisdas, Viljem Kovač, Igor Serša, Katarina Šurlan Popović, 2019, original scientific article Abstract: BACKGROUND: Malignant pleural mesothelioma (MPM) is a rare and aggressive thoracic malignancy that is difficult to cure. Dynamic contrast-enhanced (DCE) MRI is a functional imaging technique used to analyze tumor microvascular properties and to monitor therapy response. Purpose of this study was to compare two tracer kinetic models, the extended Tofts (ET) and the adiabatic approximation tissue homogeneity model (AATH) for analysis of DCE-MRI and examine the value of the DCE parameters to predict response to chemotherapy in patients with MPM. METHOD: This prospective, longitudinal, single tertiary radiology center study was conducted between October 2013 and July 2015. Patient underwent DCE-MRI studies at three time points: prior to therapy, during and after cisplatin-based chemotherapy. The images were analyzed using ET and AATH models. In short-term follow-up, the patients were classified as having disease control or progressive disease according to modified response evaluation criteria in solid tumors (mRECIST) criteria. Receiver operating characteristic curve analysis was used to examine specificity and sensitivity of DCE parameters for predicting response to therapy. Comparison tests were used to analyze whether derived parameters are interchangeable between the two models. RESULTS: Nineteen patients form the study population. The results indicate that the derived parameters are not interchangeable between the models. Significant correlation with response to therapy was found for AATH-calculated median pre-treatment efflux rate (kep) showing sensitivity of 83% and specificity of 100% (AUC 0.9). ET-calculated maximal pre-treatment kep showed 100% sensitivity and specificity for predicting treatment response during the early phase of the therapy and reached a favorable trend to significant prognostic value post-therapy. CONCLUSION: Both models show potential in predicting response to therapy in MPM. High pre-treatment kep values suggest MPM disease control post-chemotherapy.
Keywords: biomarker, magnetic resonance imaging, mesothelioma, perfusion, response evaluation criteria in solid
tumors, prognosis
Published in DiRROS: 23.09.2020; Views: 1328; Downloads: 966
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134. Capital-income breeding in male ungulates : causes and consequences of strategy differences among speciesMarco Apollonio, Enrico Merli, Roberta Chirichella, Boštjan Pokorny, Ajša Alagić, Katarina Flajšman, Philip A. Stephens, 2020, original scientific article Abstract: The capital and income breeding concept links energy resources used during reproduction to the timing of their acquisition. During reproduction, capital breeders rely on resources gained previously and accumulated for reproductive investment. By contrast, income breeders use mainly resources collected during the period of reproductive activity. Most commonly, this concept is applied to females; relatively few studies have considered males. Moreover, there has been little attention to the link between the capital-income divide and other aspects of mating strategy. We studied adult males of three wild ungulates with different levels of polygyny. A large dataset (4,264 red deer, 53,619 roe deer, and 13,537 Alpine chamois, respectively) was obtained during 2007-2017 in the whole territory of Slovenia and in the Trento province, Italy. During the rut, body mass loss of males in highly polygynous species was more than twice that of weakly polygynous species: on average, red deer stags lost 19.5%; chamois bucks 16.0%; and roe deer bucks 7.5% of their body mass. This indicates potential for a hitherto unrecognized link between the degree of intrasexual competition and the degree of capital mating. The variability in body mass at the end of the rut was clearly reduced in both highly polygynous species (from 15.1 to 9.4% in red deer, and from 12.5 to 10.5% in chamois), but did not change in roe deer. Finally, roe deer bucks had recovered body mass to that of the pre-rut period by just 2 months after the rut, while red deer stags did not manage to compensate the loss of weight until the end of the year. We suggest that, at least in ungulates, there is a link between the degree of polygyny and that of capital breeding. Males of capital and income breeders underwent body mass changes resulting from different reproductive investment during the rut. Capital breeders lost considerably more weight, and invested a variable amount of energy among individuals or among years, possibly to cope with different environmental or body conditions. In so doing, they ended the rut with poorer but more even condition among individuals.
Keywords: capital-income breeding, male reproductive investment, Capreolus capreolus, Cervus elaphus, Rupicapra rupicapra
Published in DiRROS: 23.09.2020; Views: 1374; Downloads: 820
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138. Divjad na nelovnih površinah : težave, izzivi in rešitveBoštjan Pokorny, Ajša Alagić, Elena Bužan, Hubert Potočnik, Andrej Šorgo, Katarina Flajšman, 2020, professional article Keywords: lov, lovstvo, divjad, upravljanje z divjado, nelovne površine, škoda, konflikt
Published in DiRROS: 30.07.2020; Views: 2051; Downloads: 547
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