6 research outputs found
Preliminary report on the excavation at Andornaktálya-Marinka in 2018
Andornaktálya-Marinka is among the several Palaeolithic archaeological sites in the region of Eger, on the foothills of the Bükk Mountains, North-Eastern Hungary. It is situated on the top of a 234 m high elevation located between the villages Andornaktálya and Ostoros. The site was discovered in 2014 by Ferenc Cserpák. Surface collections yielded by several field surveys show two kinds of archaeological material: one is signified mostly by a bifacial-like industry made of quartz porphyry (metarhyolite), while the other one is abundant in blade-like pieces made of Silesian erratic flint. The main aim of the excavation carried out in summer 2018 was to obtain stratigraphic information about the position of the industries, as well as to characterize the quaternary sediments covering the hilltop. The artefacts unearthed in the five trenches occurred in a depth of 60 to 80 cm in a brown chernozem-like layer
Neutron kölcsönhatások kĂsĂ©rleti Ă©s elmĂ©leti vizsgálata = Experimental and theoretical studies on neutron interactions
1) Több mint 20 neutron indukált magreakciĂł gerjesztĂ©si fĂĽggvĂ©nyĂ©nek pontosĂtása Ăşj adatok mĂ©rĂ©sĂ©vel Ă©s elmĂ©leti modell (STAPRE, EMPIRE 2.19) számĂtásokkal a 0-22 MeV energiatartományban, az IAEA Reference Neutron Activation Library kiegĂ©szĂtĂ©sĂ©re, az EC OECD- NEA WPEC keretĂ©ben az eurĂłpai fĂşziĂłs reaktor tervezĂ©sĂ©hez Ă©s az IRDF-2002 Ăşj dozimetriai könyvtár ellenĹ‘rzĂ©sĂ©re (Geel,IRMM-Debrecen; Debrecen-JĂĽlich, KFA-KairĂł). 2) A 27Al(n,p)27Mg reakciĂł gerjesztĂ©si fĂĽggvĂ©nyĂ©nek analĂzisĂ©vel Ăşj neutron energia monitor ajánlása a 13-15 MeV tartományra analitikus formában: s(En) = (-12.654En + 254.117) mb, ami a 27Mg aktivitásának mĂ©rĂ©sĂ©vel, a spektrumra átlagolt ismeretĂ©ben lehetĹ‘vĂ© teszi a D+T plazmábĂłl származĂł neutronok hozamának meghatározását is (Debrecen-Obninsk). 3) A Zn, Pt, Ir Ă©s Cd cĂ©ltárgyakon lĂ©trehozott (p,x) Ă©s (d,x) reakciĂłkban 61 gerjesztĂ©si fĂĽggvĂ©ny mĂ©rĂ©se Ă©s számĂtása az ALICE-IPPE modellel a kĂĽszöb- 80 MeV tartományban, amelyek zömĂ©re korábban nem volt adat (BrĂĽsszel-Debrecen-Sendai, CYRIC-Obninsk). 4) A NAĂś által koordinált program keretĂ©ben plasztik töltĂ©sű taposĂłaknák Ă©szlelĂ©sĂ©re Ă©s beazonosĂtására neutronokra alapozott mĂłdszerek Ă©s hordozhatĂł eszközök kifejlesztĂ©se. 5) Az epitermikus neutronok lelassulásán alapulĂł Ăşj mĂłdszer kidolgozása kiterjedt közegek hidrogĂ©ntartalmának meghatározásra. A relatĂv fluxus Ă©s a hidrogĂ©natomok száma közötti kapcsolat analitikus leĂrása (Debrecen-Tsukuba, KEK, Japán; Debrecen-KairĂł-Tsukuba). 6) Eljárás kidolgozása az átlagos aktiválĂł termikus Ă©s epitermikus neutron fluxus kĂsĂ©rleti meghatározására kiterjedt, erĹ‘sen abszorbeálĂł közegekre is (Debrecen-Tsukuba). | 1) More than 20 precise excitation functions of neutron induced reactions were given by new data and model calculations (STAPRE, EMOIRE 2.19) in the 0-22 MeV range to complete the IAEA Reference Neutron Activation Library, to design the European fusion reactor in collaboration with the EC OECD-NEA WPEC and for the validation of IRDF-2002 new dosimetry library (Geel,IRMM-Debrecen; Debrecen-JĂĽlich, KFA-Cairo). 2) Using the evaluated excitation function for 27Al(n,p)27Mg reaction a new energy monitor was given for the 13-15 MeV interval: s(En) = (-12.654En + 254.117) mb. In the knowledge of the spectrum averaged data the yield of D+T plasma neutrons can also be determined by the measurement of 27Mg activity (Debrecen-Obninsk). 3) Measurements and calculations(ALICE-IPPE) of 61 excitation functions from threshold to 80 MeV produced in (p,x) and (d,x) reactions on Zn, Pt, Ir and Cd targets. Most of these data were determined for the first time (Brussels-Debrecen-Sendai, CYRIC-Obninsk). 4) Development of neutron based methods and hand-held probes for the detection and identification of plastic anti-personnel landmines in cooperation with the IAEA. 5) Development of a new method for bulk hydrogen analysis using epithermal neutrons. Description the relation between the relative flux and the number of hydrogen atoms by analytical expression (Debrecen-Tsukuba, KEK, Japan; Debrecen-Cairo-Tsukuba). 6) An experimental procedure was elaborated for the determination of the average activating flux of thermal and epithermal neutrons in bulky samples containing highly absorbing elements (Debrecen-Tsukuba)
Középső-miocén sziláscet (Cetacea: Mysticeti) humerusok a Pécs, danitzpusztai homokbányából
Az utóbbi húsz év gyűjtéseinek köszönhetően nagy mennyiségű sziláscet felkarcsont került elő egyetlen lelőhelyről, a Pécs melletti danitzpusztai homokbányából. A vizsgált humerusok a középső-miocénből (szarmata, badeni?) áthalmozottan, a pannóniai homokban találhatók.
A területről összesen 19 db — kettő kivételével — közgyűjteményben elhelyezett humerust tanulmányoztam, melyek három taxonba sorolhatóak: cf. Cetotherium priscum (EICHWALD 1840); „Cetotherium” aff. maicopicum (SPASSKI 1951); és Cetotheriidae indet.
A danitzpusztai cf. C. priscumba sorolt felkarcsontokkal azonos taxont képviselnek a Pécs-Vasasról, a horvátországi Samoborról származó leletek, valamint a Bécsi-medence anyagából előkerült három példány.
A „Cetotherium” aff. maicopicum (SPASSKI 1951) egyedei mĂ©reteikben ugyan kisebbek, de morfolĂłgiai jellegeikben a Keleti-ParatethysbĹ‘l leĂrt „Cetotherium” maicopicum (SPASSKI 1951) felkarjával mutatnak nagyfokĂş egyezĂ©st, Ăgy azok feltehetĹ‘en a genushoz tartozĂł Ăşj faj tagjai lehetnek.
A Cetotheriidae indet.-be sorolt kismĂ©retű humerusnak nem sikerĂĽlt megtalálni morfolĂłgiai Ă©s metrikus karaktereiben a párhuzamait, Ăgy nagy valĂłszĂnűsĂ©ggel egy Ăşj taxont kĂ©pvisel
Radiochemical Measurement of Excitation Function of 63Cu(n,p)63Ni Reaction from 7.2 to 14.6 MeV
New Perspectives on the Problems of the Exploitation Area and the Prehistoric Use of the Buda Hornstone in Hungary
The mountainous areas of the Carpathian basin have provided a wide spectrum of siliceous rocks for prehistoric people. Although the presence of outcrops of a kind of chert, named Buda hornstone was already known by geological and petrographic investigations, the developing Hungarian petroarchaeological research did not pay much attention to this raw material. Its archaeological perspectives have been opened by a discovery made at the Denevér street in western part of Budapest in the 1980s. During the excavations of the flint mine, not much was known about the distribution of this raw material in the archaeological record. Since then the growing amount of archaeological evidences showed that its first significant occurrence in assemblages can be dated to the Late Copper Age Baden culture, and it became more abundant through the Early Bronze age Bell-Beaker culture until the Middle Bronze Age tell cultures. Until now, 15 outcrops of the Buda hornstone have been localised on the surface. Based on thin section examinations taken from two different outcrops, we have made a clear distinction between three variants. In the last few years, archaeological supervision has been conducted during house constructions, suggesting the Buda hornstone occurrence takes the form of a secondary autochthonous type of source. In the framework of our research program, a systematic check of the raw materials is planned in the lithic assemblages of the nearby prehistoric sites, as well as to look for extraction pits or other mining features with the application of geophysical methods and a thorough analysis of the surface morpholog