scholarly journals NEW PALEOLITHIC FINDS IN THE LOWER DON REGION

2021 ◽  
pp. 50-59
Author(s):  
А. В. Колесник ◽  
Е. И. Ревина ◽  
А. К. Очередной ◽  
А. Ю. Данильченко ◽  
Ю. Н. Зоров
Keyword(s):  
Alluvial Soil ◽  
Raw Material ◽  
East European Plain ◽  
Middle Paleolithic ◽  
Construction Site ◽  
East European ◽  
Azov Sea ◽  
First Time ◽  
The Village ◽  
Historical Periods

Изучение среднего и нижнего палеолита юга Восточно-Европейской равнины до сих пор во многом связано с редкими памятниками, расположенными в Северо-Восточном Приазовье (Герасимовка, Рожок I, Носово) и в нижнем течении р. Северский Донец (Хрящи, Михайловское), поэтому любые сведения о новых комплексах этих эпох представляют большой интерес. В статье впервые представлены материалы нового местонахождения каменного века Батай III, открытого более сорока лет назад, расположенного в дельте Дона в устье р. Койсуг. На строительной площадке в перемещенном грунте аллювиального генезиса (рис. 1: 2,3) была собрана коллекция кремневых изделий, состоящая в основном из артефактов среднепалеолитического облика. Основой для них послужил местный галечный кремень. Цвет сырья буро-коричневый (рис. 2: 1b). Патина варьирует от желто-коричневой до красновато-бурой. Коллекция включает нуклевидные изделия, пренуклеусы, небольшой плоско-выпуклый бифас миндалевидной формы (рис. 3: 1a, b), остроконечник (рис. 3: 4a), различные сколы. Наиболее близкие аналогии происходят из местонахождения палеолита у х. Михайловское - недалеко от впадения р. Северский Донец в Дон. So far the studies of the Middle and Lower Paleolithic in the South of the East European Plain have been linked to rare sites located in the northeastern of Azov Sea region (Gerasimovka, Rozhok I, and Nosovo) and the downstream of the Severskiy Donets river (Khryashchi, and Mikhaylovskoe); that is why, any information on new assemblages dating to these historical periods are of great interest. Materials from Batay III, which is a new Stone Age location discovered more than forty years ago, are described for the first time. This site is located in the Don estuary in the mouth of the Koysug river. An assemblage of flint items made up mostly of the Middle Paleolithic artifacts was collected in alluvial soil removed from the construction site (Fig. 1: 2, 3). Local pebbles were used as the main source material. The raw material is reddish-brown (Fig. 2: 1b). The patina varies from yellow-brown to reddish-black. The assemblage includes core-like items, pre-cores, a small almond-shaped plano-convex biface (Fig. 3: 1а, b), a point (Fig. 3: 4а), and various flakes. The closest analogies come from a Paleolithic location near the village of Mikhaylovskoe not far from the place where the Severskiy Donets joins the Don.

First record of Sinodiaptomus sarsi (Copepoda: Calanoida) from the East European Plain

2020 ◽  
Vol 29 (1) ◽  
pp. 60-69
Author(s):  
V.N. Podshivalina ◽  
N.G. Sheveleva
Keyword(s):  
Calanoid Copepod ◽  
First Record ◽  
Morphological Characters ◽  
East European Plain ◽  
Middle Volga Region ◽  
East European ◽  
Asian Populations ◽  
Middle Volga ◽  
China And Japan ◽  
First Time

The calanoid copepod species Sinodiaptomus sarsi (Rylov, 1923) is recorded from the East European Plain (the Sura River floodplain, Middle Volga Region, Russia) for the first time. A brief description and illustrations of the species are provided, and some differences between its European and Asian populations are revealed. The studied population of S. sarsi from the Sura River basin is mostly similar in morphological characters to populations from China and Japan.

scholarly journals The Siberian centipede species Lithobius proximus Sseliwanoff, 1878 (Chilopoda, Lithobiomorpha): a new member of the Polish fauna

ZooKeys ◽  
2019 ◽  
Vol 821 ◽  
pp. 1-10
Author(s):  
Jolanta Wytwer ◽  
Karel Tajovský
Keyword(s):  
National Park ◽  
East European Plain ◽  
High Plasticity ◽  
Lake District ◽  
Local Conditions ◽  
Actual Distribution ◽  
Boreal Species ◽  
East European ◽  
Environmental Requirements ◽  
First Time

The centipede Lithobiusproximus Sseliwanoff, 1878 is presented for the first time as a new member of the Polish fauna. This species, originally characterized as a widespread Siberian boreal species, seems to possess high plasticity with regards to environmental requirements. Its actual distribution range covers several geographical zones where local conditions have allowed it to survive. The present research in the Wigry National Park, northeast Poland, shows that its distribution extends to the ends of the East European Plain embracing the East Suwałki Lake District, where it occurs almost exclusively in the oak-hornbeam forests: in summer it is one of the three dominant lithobiomorph centipedes inhabiting litter layers.

Geographical features of forest vegetation reflected at the level of the lower-rank syntaxa (evidence from the Russian part of the Upper Dnieper basin)

2017 ◽  
pp. 94-108 ◽  
Author(s):  
Yu. A. Semenishchenkov
Keyword(s):  
Forest Vegetation ◽  
East European Plain ◽  
Early 20Th Century ◽  
Suggested Approach ◽  
Central European ◽  
Classification Schemes ◽  
East European ◽  
Lower Rank ◽  
Geographical Variations ◽  
European Part Of Russia

Phytogeographical features of forest vegetation at the level of lower-rank syntaxa were being discussed in literature since the early 20th century (Cajander, 1903; Sukachev, 1926; Braun-Blanquet, 1964; Kral et al., 1975; Kleopov, 1990; Bulokhov, 2003; Ellenberg, 2009), however, phytocoenologists still have no uniform interpretation and geographical maintenance of lower classification units. Forest vegetation of the European part of Russia is well studied according to Braun-Blanquet approach with association as a system of geographical subassociations. The paper offers the approaches to the reflection of geographical variations of the natural forest vegetation in the basin of the Upper Dnieper (central part of the East European Plain) at the level of lower-rank syntaxa The xeromesophytic oak woods in the basin of the Upper Dnieper belong to the East European ass. Lathyro nigri–Quercetum roboris Bulokhov et Solomeshch 2003. Floristic differentiation of this association from the similar Central European ass. Potentillo-Quercetum is given. These two associations have large blocks of geographically significant differential species that does not allow to consider them as a part of one association. The suggested approach allows to define the chorological content of units of lower syntaxonomical ranks and make regional classification schemes comparable to each other.

scholarly journals Eastern Europe’s “Transitional Industry”?: Deconstructing the Early Streletskian

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
R. Dinnis ◽  
A. Bessudnov ◽  
N. Reynolds ◽  
T. Devièse ◽  
A. Dudin ◽  
...  
Keyword(s):  
Modern Human ◽  
East European Plain ◽  
Upper Palaeolithic ◽  
Radiocarbon Dates ◽  
East European ◽  
Archaeological Material ◽  
Younger Age ◽  
Layer V ◽  
Precise Relationship ◽  
Early Upper

AbstractThe Streletskian is central to understanding the onset of the Upper Palaeolithic on the East European Plain. Early Streletskian assemblages are frequently seen as marking the Neanderthal-anatomically modern human (AMH) anthropological transition, as well as the Middle-to-Upper Palaeolithic archaeological transition. The age of key Streletskian assemblages, however, remains unclear, and there are outstanding questions over how they relate to Middle and Early Upper Palaeolithic facies. The three oldest Streletskian layers—Kostenki 1 Layer V, Kostenki 6 and Kostenki 12 Layer III—were excavated by A. N. Rogachev in the mid-20th century. Here, we re-examine these layers in light of problems noted during Rogachev’s campaigns and later excavations. Layer V in the northern part of Kostenki 1 is the most likely assemblage to be unmixed. A new radiocarbon date of 35,100 ± 500 BP (OxA- X-2717-21) for this assemblage agrees with Rogachev’s stratigraphic interpretation and contradicts later claims of a younger age. More ancient radiocarbon dates for Kostenki 1 Layer V are from areas lacking diagnostic Streletskian points. The Kostenki 6 assemblage’s stratigraphic context is extremely poor, but new radiocarbon dates are consistent with Rogachev’s view that the archaeological material was deposited prior to the CI tephra (i.e. >34.3 ka BP). Multiple lines of evidence indicate that Kostenki 12 Layer III contains material of different ages. Despite some uncertainty over the precise relationship between the dated sample and diagnostic lithic material, Kostenki 1 Layer V (North) therefore currently provides the best age estimate for an early Streletskian context. This age is younger than fully Upper Palaeolithic assemblages elsewhere at Kostenki. Other “Streletskian” assemblages and Streletskian points from younger contexts at Kostenki are briefly reviewed, with possible explanations for their chronostratigraphic distribution considered. We caution that the cultural taxon Streletskian should not be applied to assemblages based simply on the presence of bifacially worked artefacts.

scholarly journals Determination of Essential Oil Bioactive Components and Rosmarinic Acid of Salvia officinalis Cultivated under Different Intra-row Spacing

2013 ◽  
Vol 5 (2) ◽  
pp. 198-203 ◽  
Author(s):  
Mohammad ABU DARWISH ◽  
Ezz Al-Dein AL-RAMAMNEH ◽  
Ivan SALAMON ◽  
Ziad ABU-DIEYEH ◽  
Mohamed AL NAWAISEH ◽  
...  
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinic Acid ◽  
Plant Density ◽  
Salvia Officinalis ◽  
Raw Material ◽  
Row Spacing ◽  
Human Disorders ◽  
Tea Production ◽  
First Time

Salvia officinalis, known also as sage, is a medicinal plant belonging to the Lamiaceae family that spreads all over the word in several countries. The demand for the raw material and extracts of this plant is increasing due to its numerous applications in pharmacy, food and herbal tea production. The present study investigated for the first time the effect of 15, 30 and 45 cm intra-row spacing (plant density) on the main constituents of sage essential oils and rosmarinic acid content. The highest content of essential oils (2.7%) and rosmarinic acid (2.0%) were obtained in plants grown using 15 cm planting space. Likewise, close spacing resulted also in a substantial content of 1,8-cineole (47-50%, GC/FID; 55-60%, GC/MS). This work indicated that 1,8-cineole chemotype was a dominant character of cultivated S. officinalis in south of Jordan. In general, the percent of α-thujone in essential oil was not affected by intra-row spacing. However, the percent of β-thujone decreased from (2-3%, GC/MS) in plants grown using 15 cm intra-row spacing to (1-2%, GC/MS) in plants grown using 30 and 45 cm intra-row spacing. The highest content of α-and β-pinene was recorded in plants grown using 45 cm planting space (8-10%, GC/FID; 5-6% GC/MS). Based on GC/MS, camphor compound was enriched (9-10%) in sage plants grown under 15 cm spacing and greater than in plants grown under 30 (6-7%) or 45 cm (5-6%) spacing. The results make the potential use of sage extracts in the treatment of some human disorders or illness an area of further research.

scholarly journals A Novel Approach to Fabricate Foam Ceramics from Steel Slag

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Yu Zheng ◽  
Xudong Luo ◽  
Jinlong Yang ◽  
Wenlong Huo ◽  
Chi Kang
Keyword(s):  
Compressive Strength ◽  
Ph Value ◽  
Steel Slag ◽  
Raw Material ◽  
Solid Loading ◽  
Insulation Material ◽  
Ceramic Foams ◽  
Novel Approach ◽  
The Stability ◽  
First Time

A novel approach is used for fabricating steel slag foam ceramics based on the particle-stabilized foaming method. In this work, steel slag was used as the raw material and propyl gallate (PG) was used as the surface modifier. For the first time, steel slag ceramic foams were successfully fabricated based on particle-stabilized foams. The results show that the stability of the ceramic foams was closely related to the pH value and PG concentration. The porosity and compressive strength could be controlled by changing the solid loading of steel slag and sintering temperature. The porosity of steel slag foam ceramics ranged from 85.6% to 62.53%, and the compressive strength was from 1.74 MPa to 10.42 MPa. The thermal conductivity of steel slag foam ceramics was only 0.067 W (m·K)−1, which shows that it could be used as a thermal insulation material.

Surface Runoff and Snowmelt Infiltration into the Soil on Plowlands in the Forest-Steppe and Steppe Zones of the East European Plain

2018 ◽  
Vol 51 (1) ◽  
pp. 66-72 ◽  
Author(s):  
A. T. Barabanov ◽  
S. V. Dolgov ◽  
N. I. Koronkevich ◽  
V. I. Panov ◽  
A. I. Petel’ko
Keyword(s):  
Surface Runoff ◽  
East European Plain ◽  
Forest Steppe ◽  
East European

Possible Causes in Breaking of Dental Implants Research

2017 ◽  
Vol 907 ◽  
pp. 104-118
Author(s):  
Maria Stoicănescu ◽  
Eliza Buzamet ◽  
Dragos Vladimir Budei ◽  
Valentin Craciun ◽  
Roxana Budei ◽  
...  
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Scientific Literature ◽  
Surface Characteristics ◽  
Raw Material ◽  
New Materials ◽  
Materials Used ◽  
Type Of Failure ◽  
First Time ◽  
Consequent Increase

Dental implants are becoming increasingly used in current dental practice. This increased demand has motivated manufacturers to develop varieties of product through design, but also looking for new materials used to improve surface characteristics in order to obtain a better osseointegration. But the increase in the use of implants goes to a consequent increase in the number of failures. These failures are caused either by treatment complications (peri-implantitis), by fatigue breakage under mechanical over-stress, by defective raw material, or due to errors during the insertion procedures. Although they are rare, these complications are serious in dentistry. Before to market a dental implant to clinical practitioners, the product is validated among other determinations in number of biocompatibility research. Raw material issues, details about its structure and properties are less published by the scientific literature, but all this are subject of a carefully analysis of the producers. Breaking of dental implants during surgical procedures, during the prosthetic procedures or during use (chewing, bruxism, accidents, etc.), is the second most common cause of loss of an implant after consecutive peri-implantitis rejection. Although the frequency of this type of failure for a dental implant is much smaller than those caused by the peri-implantitis, a detailed study of broken implants can explain possible causes. The use of scanning electron microscopy (SEM) in the study of the cleave areas explain the production mechanism of cleavages, starting from micro-fissures in the alloy used for the production of dental implants. These micro-fissures in weak areas of the implant (anti-rotational corners of the polygons, etc.) could generate a serious risk of cleavage first time when a higher force is applied.

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