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Query: "author" (Du%C5%A1an Gabrijel%C4%8Di%C4%8D) .

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1.
Radioimunološko določanje luteinizirajočega hormona (LH), folikel stimulirajočega hormona (FSH) in testosterona v krvi in spermi fertilnih in infertilnih moških
Elko Borko, Radovan Breznik, Ksenija Ogrizek-Pelkič, Majda Rižnik, Jurij Šubic, Rudi Turk, 1978, original scientific article

Abstract: Avtorji poročajo o svojih izkušnjah z določanjem LH, FSH in testosterona v krvi in v spermi pri fertilnih in infertilnih moških. Naše dosedanje preiskave so pokazale, da je količina FSH v krvi v primeru okvarjene spermatogeneze povečana. Vrednosti LH so v spermi višje kot statistično signifikantne korelacije glede na spermatogenezo. Avtorji načrtujejo nadaljne raziskave o gibanju teh hormonov v krvi in spermi pri različnih oblikah okvarjene sprematogeneze.
Published in DiRROS: 14.09.2023; Views: 192; Downloads: 64
.pdf Full text (350,78 KB)

2.
Epidemiology of flavescence dorée and hazelnut decline in Slovenia : geographical distribution and genetic diversity of the associated 16SrV phytoplasmas
Zala Kogej Zwitter, Gabrijel Seljak, Tjaša Jakomin, Jakob Brodarič, Ana Vučurović, Sandra Pedemay, Pascal Salar, Sylvie Malembic-Maher, Xavier Foissac, Nataša Mehle, 2023, original scientific article

Abstract: Flavescence dorée (FD) phytoplasma from 16SrV-C and -D subgroups cause severe damage to grapevines throughout Europe. This phytoplasma is transmitted from grapevine to grapevine by the sap-sucking leafhopper Scaphoideus titanus. European black alder and clematis serve as perennial plant reservoirs for 16SrV-C phytoplasma strains, and their host range has recently been extended to hazelnuts. In Slovenia, hazelnut orchards are declining due to 16SrV phytoplasma infections, where large populations of the non-autochthonous leafhopper Orientus ishidae have been observed. To better characterise the phytoplasma-induced decline of hazelnut and possible transmission fluxes between these orchards and grapevine, genetic diversity of 16SrV phytoplasmas in grapevine, hazelnut and leafhoppers was monitored from 2017 to 2022. The nucleotide sequence analysis was based on the map gene. The most prevalent map genotype in grapevine in all wine-growing regions of Slovenia was M54, which accounted for 84 % of the 176 grapevines tested. Besides M54, other epidemic genotypes with lower frequency were M38 (6 %), M51 (3 %), M50 (2 %) and M122 (1 %). M38, M50 and M122 were also detected in infected cultivated hazelnuts and in specimens of O. ishidae leafhopper caught in declining hazelnut orchards. It suggests that this polyphagous vector could be responsible for phytoplasma infection in hazelnut orchards and possibly for some phytoplasma exchanges between hazelnuts and grapevine. We hereby describe new genotypes: M158 in grapevine as well as four never reported genotypes M159 to M162 in hazelnut. Of these four genotypes in hazelnut, one (M160) was also detected in O. ishidae. Analysis of additional genes of the new genotypes allowed us to assign them to the VmpA-III cluster, which corresponds to the 16SrV-C strains previously shown to be compatible with S. titanus transmission.
Keywords: phytoplasmas, haselnuts, grapevine, Flavescence dorée, epidemiology, plant disease
Published in DiRROS: 26.07.2023; Views: 330; Downloads: 156
URL Link to file
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3.
Residual compressive behavior of self-compacting concrete after high temperature exposure - influence of binder materials
Marija Jelčić Rukavina, Ivan Gabrijel, Ivanka Netinger Grubeša, Ana Mladenovič, 2022, original scientific article

Abstract: This paper presents an experimental investigation of the compressive behavior of highstrength self-compacting concrete exposed to temperatures up to 600 C. Ten different concrete compositions were tested, in which part of the cement (by weight) was replaced by three different mineral additives (5–15% metakaolin, 20–40% fly ash and 5–15% limestone). The stress–strain curves, compressive strength, modulus of elasticity and strain at peak stress were evaluated from uniaxial compression tests. Scanning electron microscope micrographs were also taken to evaluate the damage caused by the high temperatures. A sharp decrease in mechanical properties and an increase in peak strain were observed already after 200 C for all mixes tested. The different mineral additives used in this study affected the variations of residual compressive strength by 24% and peak strain by 38%, while the variations of residual modulus elasticity were 14%. Comparing the obtained results with the recommendations for compressive strength given in regulatory code EN 1992-1-2 for high strength concrete, it can be concluded that the strength loss observed in EN 1992-1-2 at temperatures up to 400 C is too conservative. The Popovics model for the relationship between stress and strain provided a good approximation for the experimentally determined stress–strain curves at different temperatures.
Keywords: self-compacting concrete, mineral additives, high temperatures, residual mechanical properties, open access
Published in DiRROS: 28.04.2023; Views: 333; Downloads: 168
.pdf Full text (10,67 MB)
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4.
In-depth study of tomato and weed viromes reveals undiscovered plant virus diversity in an agroecosystem
Mark Paul Selda Rivarez, Anja Pecman, Katarina Bačnik, Olivera Maksimović, Ana Vučurović, Gabrijel Seljak, Nataša Mehle, Ion Gutiérrez-Aguirre, Maja Ravnikar, Denis Kutnjak, 2023, original scientific article

Abstract: Background: In agroecosystems, viruses are well known to influence crop health and some cause phytosanitary and economic problems, but their diversity in non-crop plants and role outside the disease perspective is less known. Extensive virome explorations that include both crop and diverse weed plants are therefore needed to better understand roles of viruses in agroecosystems. Such unbiased exploration is available through viromics, which could generate biological and ecological insights from immense high-throughput sequencing (HTS) data. Results: Here, we implemented HTS-based viromics to explore viral diversity in tomatoes and weeds in farming areas at a nation-wide scale. We detected 125 viruses, including 79 novel species, wherein 65 were found exclusively in weeds. This spanned 21 higher-level plant virus taxa dominated by Potyviridae, Rhabdoviridae, and Tombusviridae, and four non-plant virus families. We detected viruses of non-plant hosts and viroid-like sequences and demonstrated infectivity of a novel tobamovirus in plants of Solanaceae family. Diversities of predominant tomato viruses were variable, in some cases, comparable to that of global isolates of the same species. We phylogenetically classified novel viruses and showed links between a subgroup of phylogenetically related rhabdoviruses to their taxonomically related host plants. Ten classified viruses detected in tomatoes were also detected in weeds, which might indicate possible role of weeds as their reservoirs and that these viruses could be exchanged between the two compartments. Conclusions: We showed that even in relatively well studied agroecosystems, such as tomato farms, a large part of very diverse plant viromes can still be unknown and is mostly present in understudied non-crop plants. The overlapping presence of viruses in tomatoes and weeds implicate possible presence of virus reservoir and possible exchange between the weed and crop compartments, which may influence weed management decisions. The observed variability and widespread presence of predominant tomato viruses and the infectivity of a novel tobamovirus in solanaceous plants, provided foundation for further investigation of virus disease dynamics and their effect on tomato health. The extensive insights we generated from such in-depth agroecosystem virome exploration will be valuable in anticipating possible emergences of plant virus diseases and would serve as baseline for further post-discovery characterization studies.
Keywords: tomato, weed, virus, viroid, virome, virus discovery, virus diversity, phylogenetics, metagenomics, viromics
Published in DiRROS: 13.04.2023; Views: 554; Downloads: 119
URL Link to file

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Nekaj osnovnih informacij o zaščiti pred sevanjem
Gabrijel Fabjančič, 1989, published professional conference contribution

Keywords: zaščita pred sevanjem, radiacija, radioterapija, zaščita pred sevanjem
Published in DiRROS: 17.05.2021; Views: 684; Downloads: 225
.pdf Full text (1,11 MB)

8.
Nekaj osnovnih informacij o zaščiti pred sevanjem
Gabrijel Fabjančič, 1993, published professional conference contribution

Keywords: medicina, sevanje, zaščita
Published in DiRROS: 13.05.2021; Views: 765; Downloads: 227
.pdf Full text (1,49 MB)

9.
Nekaj osnovnih informacij o zaščiti pred sevanjem
Gabrijel Fabjančič, 1997, published professional conference contribution

Published in DiRROS: 11.05.2021; Views: 672; Downloads: 190
.pdf Full text (1,44 MB)

10.
Nekaj osnovnih informacij o zaščiti pred sevanjem
Gabrijel Fabjančič, 2000, independent professional component part or a chapter in a monograph

Published in DiRROS: 28.08.2020; Views: 995; Downloads: 237
.pdf Full text (546,47 KB)

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