A Dráva durvaszemcsés folyóvízi üledékéből előkerült szubfosszilis uszadékfák dendrokronológiai és faanatómiai vizsgálata

Abstract: This paper presents preliminary results of dendrochronological analyses of the first occurrence of subfossil tree trunks from Drava alluvial sediments. Driftwood logs were found at an outer bend of the Drava river near the village of Babócsa. The site is covered by >6 m fluvial sand and gravel. Trunks are arranged horizontally, roughly in the same bed, between massive gravel and sand layers.. Fourteen samples had been collected within a hundred metre long outcrop, arranged in three distinct sets.. Half of the samples are oak (Quercus robur L., n=7), fewer samples belonged to beech (Fagus sylvatica, n=2), wych elm (Ulmus scabra, n=1), european white elm (Ulmus laevis, n=2) and finally a there are one sample each of poplar (Populus spp.) and larch (Larix decidua). The samples were processed following the standard dendrochronological protocol. Ring width was measured to the nearest 0.01mm. Despite the most likely origin of the samples is the riverbank; the oak trunks had narrow tree-ring sequences. An oak trunk of a diameter not more 20 cm contains more than 240 rings and two other oak samples have about 200 rings. These three long series could be crossdated, forming a 249 year long chronology. The chronology built from the three synchronized records (sample codes BAB002, BAB003, BAB007) was tested with surrounding oak master chronologies, without success. The first subfossil wood remains from the Drava river and their loating chronology will be of help to understand changes in river dynamics and the former composition of the tree species on the floodplain

Architectural drawing and education

The Department of History of Architecture at the Faculty of Architecture of BUTE owns a remarkable plan collection that has been established in the period from about the 1860’s to the present. Plans created in university education are of special importance – they give a general idea of architecture as a creative activity along with its complex background of art and science. Education of architects initially emphasized the copying and surveying of buildings which gradually developed through specialised design tasks to the creation of new values. The main focus of the research is to follow and evaluate this change of approach, by extending the scope of the investigations beyond the department’s collections. By charting and analysing the remained stock of historical drawings, sample books and photos in the period from the mid 19th till the mid 20th century, as well as assessing former publications and databases, this project hopes to give an overview of the role and importance of drawings in the history of architectural education. This paper aims at establishing and highlighting the main criteria and principles for the assessment of the plan material, defining also the methodology for its processin

Genomic Epidemiology and Evolution of Duck Hepatitis A Virus

Duck hepatitis A virus (DHAV), an avian picornavirus, causes high-mortality acute disease in ducklings. Among the three serotypes, DHAV-1 is globally distributed, whereas DHAV-2 and DHAV-3 serotypes are chiefly restricted to Southeast Asia. In this study, we analyzed the genomic evolution of DHAV-1 strains using extant GenBank records and genomic sequences of 10 DHAV-1 strains originating from a large disease outbreak in 2004–2005, in Hungary. Recombination analysis revealed intragenotype recombination within DHAV-1 as well as intergenotype recombination events involving DHAV-1 and DHAV-3 strains. The intergenotype recombination occurred in the VP0 region. Diversifying selection seems to act at sites of certain genomic regions. Calculations estimated slightly lower rates of evolution of DHAV-1 (mean rates for individual protein coding regions, 5.6286 × 10−4 to 1.1147 × 10−3 substitutions per site per year) compared to other picornaviruses. The observed evolutionary mechanisms indicate that whole-genome-based analysis of DHAV strains is needed to better understand the emergence of novel strains and their geographical dispersal

Hypertriglyceridemia-induced acute pancreatitis: A prospective, multicenter, international cohort analysis of 716 acute pancreatitis cases

Background Hypertriglyceridemia is the third most common cause of acute pancreatitis (AP). It has been shown that hypertriglyceridemia aggravates the severity and related complications of AP; however, detailed analyses of large cohorts are inadequate and contradictory. Our aim was to investigate the dose-dependent effect of hypertriglyceridemia on AP. Methods AP patients over 18 years old who underwent triglyceride measurement within the initial three days were included into our cohort analysis from a prospective international, multicenter AP registry operated by the Hungarian Pancreatic Study Group. Data on 716 AP cases were analyzed. Six groups were created based on the highest triglyceride level (Peer reviewe

A Multicenter, International Cohort Analysis of 1435 Cases to Support Clinical Trial Design in Acute Pancreatitis

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Novel Circoviruses from Birds Share Common Evolutionary Roots with Fish Origin Circoviruses

Circoviruses occur in a variety of animal species and are common pathogens of mammalian and avian hosts. In our study internal organ samples of wild birds were processed for screening of circoviral sequences. Two novel viruses were identified and characterized in specimens of a little bittern and a European bee-eater that suffered from wing injuries, were weakened, had liver or kidney failures, and finally succumbed at a rescue station. The 1935 nt and 1960 nt long viral DNA genomes exhibited a genomic structure typical for circoviruses and were predicted to encode replication-associated protein in the viral strand, and a capsid protein in the complementary strand of the replicative intermediate DNA form. The genome of the newly described viruses showed 37.6% pairwise identity with each other and ≤41.5% identity with circovirus sequences, and shared a common branch with fish, human and Weddel seal circoviruses in the phylogenetic tree, implying evolutionary relationship among the ancestors of these viruses. Based on the results the little bittern and European bee-eater circoviruses represent two distinct species of the Circovirus genus, Circoviridae family