scholarly journals A Multidisciplinary Study of Finds from Suchu Island (1973 Season, Excavation II, Dwelling 1)

2020 ◽  
Vol 48 (2) ◽  
pp. 3-13
Author(s):  
V. E. Medvedev ◽  
I. V. Filatova
Keyword(s):  
Sandy Loam ◽  
Underground Structure ◽  
Northeast Asia ◽  
Igneous Rocks ◽  
Raw Material ◽  
Amur River ◽  
X Ray ◽  
Multidisciplinary Study ◽  
The Amur River ◽  
Plant Processing

We analyze new finds from a Neolithic dwelling 1 from excavation II at the Suchu Island, on the Amur River. We analyzed an assemblage of 3788 lithics and ceramics, along with field records housed at the Institute of Archaeology and Ethnography of SB RAS. The article continues the series of publications in this journal, outlining the findings at Suchu—one of the key Neolithic sites in Northeast Asia. Dwelling 1 is a 0.8-meter-deep round semi-underground structure dug into the sandy loam. In its center, there was a hearth, and walls lacked ledges. On the floor, numerous pits from posts that had supported the roof were found. The stratigraphic and horizontal position of finds was registered; artifacts were analyzed through morphological typology, petrographic and X-ray analysis, and microscopy. Our analysis reveals hunting, fishing, and butchering tools, those for processing stone, wood, and bone, those for plant processing, and digging tools. Various sedimentary and igneous rocks were used as raw material. In terms of cultural chronology, standard pottery was mostly attributed to the Lower Amur cultures (Malyshevo and Voznesenovskoye), while some was apparently manufactured by immigrants. Principal technological, constructive, morphological, decorative, and functional characteristics of each ceramic type were assessed. Unusual artistic and ritual items clustered in dwelling 1 of the Malyshevo type (late 5th to early 4th millennia BC) are suggestive of a domestic shrine.

scholarly journals Textural, Mineralogical and Geochemical Assessment of the Pikrolimni Lake Sediments (Kilkis District, Northern Greece) and Suitability for use in Pelotherapy

2019 ◽  
Vol 55 (1) ◽  
pp. 170
Author(s):  
Emilia Sofianska ◽  
Constadinos Athanassoulis ◽  
Dimitrios Tarenidis ◽  
Nikolaos Xirokostas ◽  
Maria Gkagka
Keyword(s):  
Lake Sediments ◽  
Inductively Coupled Plasma ◽  
Toxic Elements ◽  
Solid Phase ◽  
Sandy Loam ◽  
Chemical Properties ◽  
Raw Material ◽  
Northern Greece ◽  
Mean Values ◽  
X Ray

Pelotherapy is the application of thermal muds (peloids) for recovering muscle, bone and skin pathologies. Specific criteria were established for the evaluation of the therapeutic suitability of peloids. Critical factors ruling the quality of the solid phase of peloids include granulometry, mineralogy, and physical-chemical properties. The aim of the present study was to investigate the textural, mineralogical and geochemical characteristics of the Pikrolimni Lake sediments (PLS), Kilkis district (N. Greece) in order to assess their suitability for application as raw material into mud therapy technologies. Representative PLS samples were collected and analyzed by means of different techniques at the analytical laboratories of the Hellenic Survey of Geology and Mineral Exploration (HSGME). Results showed that, texturally, the PLS were classified as sandy loam sediments. X-ray diffraction (XRD) study revealed that the PLS consist mainly of quartz, clay minerals (kaolinite, montmorillonite, illite), and muscovite, with minor feldspar and calcite. X-ray fluorescence (XFR) analysis showed that PLS samples have higher SiO2 and lower Al2O3 contents compared to the average shale composition. Among the analyzed, by means of inductively coupled plasma mass spectrometry (ICP-MS) technique, potentially toxic elements only As and Pb contents were found significantly higher than those of the average shale. Based on the calculated mean values of enrichment factor (EF) and geo-accumulation index (Igeo) PLS displayed minor enrichment and moderate contamination by Pb and As, respectively. In conclusion, an improvement of the grain size composition of PLS by means of a sieving process is needed. Besides, the study of the concentration and behavior of toxic elements in peloids formed by the mixing of the processed PLS with salty thermo-mineral water is proposed.

Influences of forest on MODIS snow cover mapping and snow variations in the Amur River basin in Northeast Asia during 2000-2014

2017 ◽  
Vol 31 (18) ◽  
pp. 3225-3241 ◽  
Author(s):  
Xianwei Wang ◽  
Yuan Zhu ◽  
Yaning Chen ◽  
Hailing Zheng ◽  
Henan Liu ◽  
...  
Keyword(s):  
Snow Cover ◽  
River Basin ◽  
Northeast Asia ◽  
Amur River Basin ◽  
Amur River ◽  
The Amur River

scholarly journals Erratum: V.I. Roslikova, L.A. Matyushkina, “Differentiation of the soil cover of the floodplain of the Middle-Amur Lowland in connection with the evolution of the relief forms”

2021 ◽  
pp. 180-181
Author(s):  
Article Editorial
Keyword(s):  
Soil Cover ◽  
Sandy Loam ◽  
Sediment Accumulation ◽  
Fine Sand ◽  
Amur River ◽  
Long Period ◽  
Sand Ridges ◽  
The Amur River ◽  
Floodplain Deposits

Dear readers, on page 111 in Volume 106 of Dokuchaev Soil Bulletin, 2021, (2021;(106):105-129) the caption to figure 1:“Fig. 1. Scheme of the structure of floodplain deposits of the Amur River within the Middle-Amur Lowland, formed over a long period of time under the conditions of directed sediment accumulation. Deposits of facies: 1 – channel sand (sand with gravel); 2 – levee (fine sand); 3 – floodplain (sandy loam and loam); 4 – old riverbed (loam with silty interlayers); 5 – eolian riolkas (relatively high fine sand ridges) (Sokhina, 1973)”should read:“Fig. 1. Scheme of the structure of floodplain deposits of the Amur River within the Middle-Amur Lowland, formed over a long period of time under the conditions of directed sediment accumulation. Deposits of facies: 1 – channel sand (sand with gravel); 2 – levee (fine sand); 3 – floodplain (sandy loam and loam); 4 – old riverbed (loam with silty interlayers); 5 – eolian riolkas (relatively high fine sand ridges) (Makhinov, 2006)”. 

scholarly journals Environmental Flow Releases for Wetland Biodiversity Conservation in the Amur River Basin

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2812 ◽  
Author(s):  
Oxana I. Nikitina ◽  
Valentina G. Dubinina ◽  
Mikhail V. Bolgov ◽  
Mikhail P. Parilov ◽  
Tatyana A. Parilova
Keyword(s):  
River Basin ◽  
Northeast Asia ◽  
Bird Species ◽  
Environmental Flow ◽  
Amur River Basin ◽  
Amur River ◽  
Wetland Biodiversity ◽  
Floodplain Inundation ◽  
The Amur River ◽  
Water Management Planning

Flow regulation by large dams has transformed the freshwater and floodplain ecosystems of the Middle Amur River basin in Northeast Asia, and negatively impacted the biodiversity and fisheries. This study aimed to develop environmental flow recommendations for the Zeya and Bureya rivers based on past flow rate records. The recommended floodplain inundation by environmental flow releases from the Zeya reservoir are currently impracticable due to technical reasons. Therefore, the importance of preserving the free-flowing tributaries of the Zeya River increases. Future technical improvements for implementing environmental flow releases at the Zeya dam would improve dam management regulation during large floods. The recommendations developed for environmental flow releases from reservoirs on the Bureya River should help to preserve the important Ramsar wetlands which provide habitats for endangered bird species while avoiding flooding of settlements. The results emphasize the importance of considering environmental flow during the early stages of dam planning and the need to enhance the role of environmental flow in water management planning.

scholarly journals Differentiation of the soil cover of the floodplain of the Middle-Amur Lowland in connection with the evolution of the relief forms

2021 ◽  
pp. 105-129
Author(s):  
V. I. Roslikova ◽  
L. A. Matyushkina
Keyword(s):  
Particle Size ◽  
Sandy Loam ◽  
Russian Far East ◽  
Plant Cover ◽  
Far East ◽  
Soil Formation ◽  
Amur River ◽  
Long Term Study ◽  
Floodplain Soils ◽  
The Amur River

The article is based on a long-term study of floodplain soils of the Amur River valley within the north-eastern part of the Middle-Amur Lowland. The results of field work on the soil-geomorphological profile across the Slavyansky Island, located 200 km from Khabarovsk down the Amur River, are discussed. The study analyzes the occurrence of the island's floodplain soils on riolkas[1] and their properties, with an emphasis on morphology and lithological and particle-size composition. The features of soil formation on riolkas of different genesis – alluvial and aeolian – are shown. On sandy and sandy-loam deposits of alluvial riolkas (“meadow-forest” ridges) poorly developed sod gley soils are formed. On heavy loam and clay alluvium of the “meadow“ ridges, annually flooded by river waters, sod-meadow gley soils develop under the woodreed grass stand. Sand deposits of high aeolian riolkas are characterized by a homogeneous fine-grained structure without interlayers, signs of organic matter and with a significant amount of mica. They describe poorly developed sod-forest soils under high-trunk oak forests. The formation of texture-differentiated soils on all types of riolkas was not revealed. When the floodplain reaches the position of the first terrace above the floodplain, the differences in the lithological composition and particle-size distribution, soil texture, height above the water edge and the nature of vegetation on the inherited riolkas provide a multidirectional evolution of soil formation. At the same time, the development is taking place in accordance with the zonal types of soils (sod-forest, brown-earth, texture-differentiated – soil with a bleached horizon (podbel)). The last are mainly formed on clay-loam alluvium, which can overlay not only alluvial, but also some aeolian riolkas. [1]Riolkas are ancient, relatively high sand ridges (extended dunes) with plant cover found in Amur region (Russian Far East).

scholarly journals Study on Adsorption Properties of Modified Corn Cob Activated Carbon for Mercury Ion

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4483
Author(s):  
Yuyingnan Liu ◽  
Xinrui Xu ◽  
Bin Qu ◽  
Xiaofeng Liu ◽  
Weiming Yi ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Photoelectron Spectroscopy ◽  
Adsorption Process ◽  
Physical Adsorption ◽  
Raw Material ◽  
Order Kinetic ◽  
Mercury Ions ◽  
Corn Cob ◽  
Adsorption Time ◽  
X Ray

In this study, corn cob was used as raw material and modified methods employing KOH and KMnO4 were used to prepare activated carbon with high adsorption capacity for mercury ions. Experiments on the effects of different influencing factors on the adsorption of mercury ions were undertaken. The results showed that when modified with KOH, the optimal adsorption time was 120 min, the optimum pH was 4; when modified with KMnO4, the optimal adsorption time was 60 min, the optimal pH was 3, and the optimal amount of adsorbent and the initial concentration were both 0.40 g/L and 100 mg/L under both modified conditions. The adsorption process conforms to the pseudo-second-order kinetic model and Langmuir model. Scanning electron microscopy and energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and Zeta potential characterization results showed that the adsorption process is mainly physical adsorption, surface complexation and ion exchange.

scholarly journals Cotton stalk-derived hydrothermal carbon for methylene blue dye removal: investigation of the raw material plant tissues

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Libo Zhang ◽  
Junyan Tan ◽  
Gangying Xing ◽  
Xintong Dou ◽  
Xuqiang Guo
Keyword(s):  
Methylene Blue ◽  
Functional Materials ◽  
Raw Material ◽  
Plant Tissues ◽  
Chemical Compositions ◽  
Waste Biomass ◽  
Cotton Stalk ◽  
Acid Base ◽  
X Ray ◽  
Bet Analysis

AbstractConversion of the abundant agricultural residual cotton stalk (CS) into useful chemicals or functional materials could alleviate the fossil fuels caused energy shortages and environmental crises. Although some advances have been achieved, less attention has been paid to the plant tissues effect. In this study, the plant tissue of CS was changed by part degradation of some components (hemicelluloses and lignin, for example) with the aid of acid/base (or both). The pretreated CS was transformed into hydrochar by hydrothermal carbonization (HTC) method. Morphological and chemical compositions of CS hydrochar were analyzed by various techniques, including elemental analysis, Fourier transform infrared (FTIR), BET analysis, X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). Methylene blue (MB) removal of prepared CS hydrochar was used to evaluate CS hydrochar pollutions adsorption capacity. Results reveal acid/base (or both) pretreatment is beneficial for CS raw material to prepare high-quality CS hydrochar. The effects of some parameters, such as initial MB concentration, temperature, pH value and recyclability on the adsorption of MB onto both acid and base-pretreated CS hydrochar (CS-H2SO4 + NaOH-HTC) were studied. The present work exhibits the importance of agricultural waste biomass material plant tissues on its derived materials, which will have a positive effect on the direct utilization of waste biomass.

scholarly journals Geochemistry and Mineralogy of Ice-Dammed Lake Sediments of the Lębork Deposit

2021 ◽  
Author(s):  
Radosław Rogoziński ◽  
Alina Maciejewska
Keyword(s):  
Chemical Composition ◽  
Lake Sediments ◽  
Inductively Coupled Plasma ◽  
Mineralogical Composition ◽  
Raw Material ◽  
Element Analysis ◽  
X Ray ◽  
Dominant Component ◽  
Clay Deposits ◽  
Dammed Lake

AbstractVarved clay deposits from ice-dammed lakes are a particularly important and broadly applied raw material used for the production of high-quality ceramics (red bricks, roof tiles, etc.), but the mineralogy and geochemistry of these sediments are not fully understood. The aim of the present study was to determine the chemical and mineralogical composition of ice-dammed lake sediments of the Lębork deposit. Major-element analysis of the compositions of selected samples from the ice-dammed lake clays was performed by X-ray fluorescence (XRF) and trace elements were determined by inductively coupled plasma-mass spectrometry. The mineralogical composition of clay samples was determined by X-ray diffraction (XRD). Analyses of the chemical composition of the ice-dammed lake clays of the Lębork deposit showed that the dominant component was SiO2 with a mean content of 56.13 wt.%; the second most abundant component was Al2O3, with a mean content for the entire deposit of 11.61 wt.%. Analysis by ICP-MS indicated the presence of rare earth elements (REE), e.g. cerium, neodymium, lanthanum, and praseodymium; their mean contents are: 56.9, 27.0, 26.3, and 7.3 ppm, respectively. Mineralogical analysis of the varved clays identified quartz, muscovite, calcite, and clay minerals – illite, kaolinite, and montmorillonite. The material filling the Lębork basin is characterized by small lateral and vertical variability in chemical composition. The results of the present study may be of considerable importance in determining the parent igneous, metamorphic, and sedimentary rocks, the weathering products of which supplied material to the ice-dammed lake, as well as in determining the mechanisms and character of the sedimentation process itself.

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