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1
Radiocarbon dating of Late Glacial sediments of Lake Milkowskie by accelerator mass spectrometry
100%
Czernik J.
Acta Palaeobotanica
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2009
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tom 49
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nr 2
2
Content available remote Sample preparation in the Gliwice Radiocarbon Laboratory for ams 14C dating
63%
Goslar T. , Czernik J.
Geochronometria
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2000
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tom Vol. 18
1-8
EN
The Accelerator Mass Spectrometry has been used in 14C dating for several years. The 14C concentration is measured in graphite target. In the Gliwice Radiocarbon Laboratory a system to produce graphite targets has been built. This system will be used for 14C dating of terrestrial plant and zooplankton macrofossils in lake sediments, and later, in routine 14C dating of small samples.
3
Vegetation changes caused by agricultural societies in the Great Mazurian Lake District
51%
Wacnik A. , Goslar T. , Czernik J.
Acta Palaeobotanica
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2012
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tom 52
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nr 1
4
Content available remote First measurements of natural radioactivities of 210Pb in the Institute of Physics, Silesian University of Technology
51%
Goslar T. , Ganowicz M. , Czernik J. , Sikorski J.
Geochronometria
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2000
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tom Vol. 18
29-34
EN
In this paper we describe the first measurements of 210Pb concentrations in sediments, performed in the Institute of Physics, Silesian University of Technology, Gliwice. The reliability of our method has been tested by the 210Pb measurements in the sediments of Lake Gościąż. The reasons for the non-monotonic profile of 210Pb in these sediments have been discussed. We also report and discuss the 210Pb measurements in the sediments formed in front of the Skeidarar glacier (Iceland).
5
Content available remote Cretaceous aggregate and reservoir effect in dating of binding materials
45%
Michalska D. , Pazdur A. , Czernik J. , Szczepaniak M. , Żurakowska M.
Geochronometria
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2013
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tom Vol. 40, no. 1
33-41
EN
Lime mortars may contain carbon from different origins. If the mortars are made of totally burnt lime, radiocarbon dating yields the true age of building construction. The presence of carbona-ceous aggregates gives the so-called dead carbon effect, which may generate older ages. Another source of carbon is charcoal present in mortars. An attempt has been made to apply the radiocarbon method to mortars of archaeologically estimated age from the Dead Sea region. Petrographical anal-yses of these samples show the carbonaceous character of the binder and large amounts of limestone aggregate. Determination of the mineral composition of the mortars and comparison with the geology of the surrounding, allows the provenance of the raw materials to be identified. They probably repre-sent the Cretaceous rocks of the Judea Group. Separate radiocarbon dates were made on bulk mortar samples, binder, charcoal fragments and sepa-rated fractions from mortars. In the case of binder-aggregate mixture the reservoir effect correction has been applied.
6
Single nucleotide polymorphisms in the RET gene and their correlations with Hirschsprung disease phenotype
32%
Smigiel R. , Lebioda A. , Patkowski D. , Czernik J. , Dobosz T. , Pesz K. , Kaczmarz M. , Sasiadek M. M.
Journal of Applied Genetics
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2006
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tom 47
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nr 3
EN
Hirschsprung disease (HSCR) is a congenital, heterogeneous disorder, characterized by the absence of intestinal ganglion cells. Recent advances show that the RET gene is a major locus involved in the pathogenesis of HSCR. The aim of this study was to analyse if the HSCR phenotype in the Polish population is associated with the presence of polymorphisms in exons 2,3,7,11,13,14 and 15 of the RET gene. Molecular results were compared with clinical and long-term follow-up data in 70 Polish patients with HSCR (84.3% with a short segment and 15.7% with a long segment of aganglionic gut). Single-nucleotide polymorphisms were analysed by using the minisequencing SNaPshot multiplex method. The 135G>A polymorphism in RET exon 2 was overrepresented in HSCR patients, compared with a healthy control group. Moreover, the 135G>A variant was shown to be associated with the severe HSCR phenotype. Two other polymorphisms, 2071G>A in exon 11 and 2712C>G in exon 15, were underrepresented in the patients. The results confirm that these RET polymorphisms play a role in the aetiology of HSCR.
7
Screening for germline p53 mutations in pediatric and adult patients of high-risk groups in Poland
32%
Fiszer-Maliszewska L. , Czernik J. , Sawicz-Birkowska K. , Perek D. , Kozera M. , Wojciechowska B. , Kazanowska B. , Hudziec P. , Kilar E.
Archivum Immunologiae et Therapiae Experimentalis
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2000
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tom 48
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nr 4
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