scholarly journals MATERIALS OF THE KONSTANTINOVSKAYA CULTURE FROM THE TEMERNITSKOYE FORTIFIED SETTLEMENT

Author(s):  
А. В. Файферт ◽  
А. А. Нечипорук ◽  
Е. В. Вдовченков ◽  
А. В. Солдатов ◽  
М. И. Мазурицкий

В 2017-2018 гг. на территории Темерницкого городища в центральной части г. Ростова-на-Дону было обнаружено поселение энеолитического времени (константиновская культура). В статье отдельно рассмотрены эти материалы, представленные в подавляющем большинстве керамикой и кремневыми изделиями (рис. 2-4). Часть их находилась в переотложенном состоянии - в разрушенном слое или хозяйственных ямах первых веков н. э. Оставшаяся половина найдена в нижних практически стерильных слоях предматерика и в заполнении двух выявленных рвов энеолитического времени (рис. 1). Единственный сохранившийся участок культурного слоя исследован в западной части раскопа. Именно с этого участка происходят два шила, обогащенная медная руда и несколько фрагментов неорнаментированных стенок сосудов с примесью раковины. Находки из металла (2 шила, плоская капля металла, медная руда) проанализированы на микрофлуоресцентном рентгеновском спектрометре (рис. 5). По совокупности технологических, морфологических и орнаментальных признаков керамики энеолитический слой Темерницкого городища можно атрибутировать ранним этапом константиновской культуры Нижнего Подонья. Помимо эпонимного поселения наиболее близки к найденным материалы нижнего горизонта Ливенцовского поселения и слой 6 поселения Раздорское I. К исследованным материалам энеолитического времени Темерницкого городища хронологически близким является погребение, обнаруженное на территории грунтового некрополя Темерницкого городища. In 2017-2018 an Eneolithic settlement (attributed to the Konstantinovskaya culture) was discovered in the territory of the Temernitskoye fortified site in the center of Rostov-on-the-Don. The paper considers these materials represented mostly_by ceramics and flint items (Fig. 2-4). Some of them were redeposited and found in a disturbed layer or household pits dating to first centuries AD. The remainder items were found in bottom and practically sterile layers over the virgin soil and in the fill of two identified Eneolithic ditches (Fig. 1). The only surviving section of the cultural layer was examined in the western part of the excavation area. It yielded two awls, enriched copper ore and several undecorated walls of shell-tempered vessels. Metal finds (two awls, a flat metal drop, copper ore) were analyzed by an X-ray microfluorescence spectrometer (Fig. 5). Based on technological, morphological and decorative characteristics of the ceramics, the Eneolithic layer of the Temernitskoye fortified settlement can be attributed to the early stage of the Konstantinovskaya culture of the Lower Don region. Besides the eponymic settlement, the materials retrieved from the lower horizon at the Liventsovka settlement and layer 6 from Razdorskaya I are the closest to the finds. A burial found in the necropolis of the Temernitskoye fortified settlement is chronologically close to the examined Eneolithic materials found at the Temernitskoye settlement.

1999 ◽  
Vol 14 (7) ◽  
pp. 2905-2911 ◽  
Author(s):  
Sangsub Kim ◽  
Tae Soo Kang ◽  
Jung Ho Je

Epitaxial (Ba0.5Sr0.5) TiO3 thin films of two different thickness (∼25 and ∼134 nm) on MgO(001) prepared by a pulsed laser deposition method were studied by synchrotron x-ray scattering measurements. The film grew initially with a cube-on-cube relationship, maintaining it during further growth. As the film grew, the surface of the film became significantly rougher, but the interface between the film and the substrate did not. In the early stage of growth, the film was highly strained in a tetragonal structure (c/a = 1.04) with the longer axis parallel to the surface normal direction. As the growth proceeded further, it relaxed to a cubic structure with the lattice parameter near the bulk value, and the mosaic distribution improved significantly in both in- and out-of-plane directions. The thinner film (∼25 nm) showed only one domain limited mainly by the film thickness, but the thicker film (∼134 nm) exhibited three domains along the surface normal direction.


2018 ◽  
Vol 2018 ◽  
pp. 1-9
Author(s):  
Thérèse Gorisse ◽  
Ludovic Dupré ◽  
Marc Zelsmann ◽  
Alina Vlad ◽  
Alessandro Coati ◽  
...  

We report the successful use of in situ grazing incidence small-angle X-ray scattering to follow the anodization of aluminum. A dedicated electrochemical cell was designed and developed for this purpose with low X-ray absorption, with the possibility to access all azimuthal angles (360°) and to remotely control the temperature of the electrolyte. Three well-known fabrication techniques of nanoporous alumina, i.e., single, double, and pretextured, were investigated. The differences in the evolution of the scattering images are described and explained. From these measurements, we could determine at which moment the pores start growing even for very short anodization times. Furthermore, we could follow the thickness of the alumina layer as a function of the anodization time by monitoring the period of the Kiessig fringes. This work is aimed at helping to understand the different steps taking place during the anodization of aluminum at the very early stages of nanoporous alumina formation.


Proceedings ◽  
2020 ◽  
Vol 54 (1) ◽  
pp. 31
Author(s):  
Joaquim de Moura ◽  
Lucía Ramos ◽  
Plácido L. Vidal ◽  
Jorge Novo ◽  
Marcos Ortega

The new coronavirus (COVID-19) is a disease that is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). On 11 March 2020, the coronavirus outbreak has been labelled a global pandemic by the World Health Organization. In this context, chest X-ray imaging has become a remarkably powerful tool for the identification of patients with COVID-19 infections at an early stage when clinical symptoms may be unspecific or sparse. In this work, we propose a complete analysis of separability of COVID-19 and pneumonia in chest X-ray images by means of Convolutional Neural Networks. Satisfactory results were obtained that demonstrated the suitability of the proposed system, improving the efficiency of the medical screening process in the healthcare systems.


1999 ◽  
Vol 06 (06) ◽  
pp. 1053-1060 ◽  
Author(s):  
N. TABET ◽  
J. AL-SADAH ◽  
M. SALIM

X-ray Photoelectron Spectroscopy (XPS) has been used to investigate the oxidation of (011) Ge substrates. The sample surfaces were CP4-etched, then annealed in situ, at different temperatures, for various durations. Dry and wet atmospheres were used. The oxidation rate during the early stage was increased by the presence of moisture in the atmosphere. A simple model was used to define and determine an apparent thickness of the oxide film from XPS measurements. The time dependence of the apparent thickness is consistent with a partial coverage of the surface by oxide islands. The growth kinetics of the oxide islands obeys a nearly cubic law.


Author(s):  
Т. М. Собчишина

Наведено дані рентґенологічних досліджень післязастосування ґранульованих імплантантів Біомін-гТлС для пластики кісткових дефектів. Встанов-лено, що застосування цих імплантантів призво-дить до активізації процесів репаративного ос-теогенезу та відтворення анатомічної форми йструктури кістки. Рентґенологічно виявлені таописані основні зміни тканин, характерні для ос-теомієліту. Доведено, що рентґенологічне дослі-дження дає можливість діагностувати остеоміє-літ на ранній стадії та призначити ефективнелікування. The data of X-ray after the application of granular implants Biomin-hTlS of bone defects.Found that the use of these implants leads to activation of reparative osteogenesis and playanatomic shape and bone structure. Radiologically detected and describes the main tissue changescharacteristic of osteomyelitis. It is shown that the X-ray study allows to diagnose osteomyelitis atan early stage and be an effective treatment.


2019 ◽  
Vol 8 (3) ◽  
pp. 166-173
Author(s):  
Talgat Basarbaevich Mamirov

The paper is devoted to preliminary data from a study of the Vavilino 1 site in Western Kazakhstan. The monument was first opened by N.M. Malov in 1986, later he picked artifacts from the surface in 1988. In 1991 N.L. Morgunova carried out excavations on the site, which showed the importance of this monument study to understand the Neolithic Volga-Ural interfluve. The monument is located on the right bank of the Derkul River and is currently classified as an emergency. In 2018, employees of the Institute of Archeology named after A.Kh. Margulan in the framework of the Stone Age study in Western Kazakhstan started to work on the monuments of Yeshkitau, Derkul 1 and Vavilino 1. At the Vavilino 1 site a small excavation area - 16 square meters was made, more than a thousand stone artifacts were received; fragments of ceramics and bone remains of animals were poorly diagnosed. Excavations have shown the presence of a 15-20 cm thick cultural layer belonging to the Neolithic time. The upper layer of the monument with a capacity of up to 30 cm was destroyed by anthropogenic activities in the past century. The material from the cultural layer is not numerous; tip scrapers, fragments of plates with retouching, geometrical microliths, prismatic nucleus for plates, etc. are typologically distinguished.


2019 ◽  
Vol 11 ◽  
Author(s):  
A. G. Karydas ◽  
T. Pantazis ◽  
C. Doumas ◽  
A. Vlachopoulos ◽  
P. Nomikos ◽  
...  

In-situ X-ray fluorescence analysis (XRF) of ancient artifacts from the excavation area was performed using a novel X-ray instrumentation, composed of a portable silicon PIN thermoelectrically cooled X-ray detector, a miniature X-ray source, and portable data acquisition devices. The main objective of the analyses in Akrotiri was to explore the potential of the technique to provide answers to a wide range of archaeometric questions regarding the bulk composition of metal alloys, especially of gold, the characterization of corrosion products in bronze artifacts, identification of inorganic elements which are fingerprints of the minerals used in wall-painting pigments, and of the painting materials and techniques used for the decoration of clay vase surfaces. Among the analysed artifacts are a unique gold ibex, a bronze dagger and blade, various pigments from the wall paintings of room 3 in Xeste 3, decoration pigments from rosettes of faience, a bichrome jug, and other clay vases. The results of the in-situ XRF survey, primarily those of the bulk composition and soldering technology of the gold ibex, are discussed and compared with literature.


2014 ◽  
Vol 16 (48) ◽  
pp. 26624-26630 ◽  
Author(s):  
C. A. F. Vaz ◽  
A. Balan ◽  
F. Nolting ◽  
A. Kleibert

In situX-ray photoemission electron microscopy reveals the evolution of chemical composition and magnetism of individual iron nanoparticles during oxidation.


Sign in / Sign up

Export Citation Format

Share Document