Resultados de búsqueda - black layer
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Improving the soil fertility of agricultural lands in the Non-Black Earth Zone of the Russian Federation
Publicado 2021-09-01Enlace del recursoRelevance. According to the Federal Law of 16.07.1998 No. 101-FZ (as amended on 05.04.2016) "On State Regulation of Ensuring the Fertility of Agricultural Land", owners, owners, users, including tenants of land plots are obliged to: carry out the production of agricultural products in ways...
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Effect of plough pans on the growth of soybean roots in the black-soil region of northeastern China
Publicado 2017-10-01“…Abstract: Plough pans (PPs), common in the black-soil region of northeastern China, have significant effects on the root systems of crops. …”Abstract: Plough pans (PPs), common in the black-soil region of northeastern China, have significant effects on the root systems of crops. We conducted a field experiment to study the distribution of soybean roots under the influence of PPs. The soybean roots showed compensatory growth above the PP,...
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Geothermal sections of the earth's crust and upper mantle of the Black Sea and its northern border
Publicado 2011-12-01“…The thickness of geothermic lithosphere changes from 80-90 km under the West Black Sea and East Black Sea Depressions to 180-200 km under the south slope of the East European Platform. …”Results of measurements of heat flow and mathematical simulation of geothermic state of the lithosphere along two profiles, crossing the western and the eastern depressions of the Black Sea and flanking northward tectonic structures of different age have been presented. It has been shown that consid...
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Self-Regulating Electrically Conductive Materials Based on Polyethylene Compositions with UHMWPE and Carbon Black
Publicado 2019-05-01“…It was found that a diffusion interphase layer with a reduced fluidity in the melt of HDPE/UHMWPE blends was formed. …”Electrically conductive composites based on high density polyethylene (HDPE) / ultrahigh molecular weight polyethylene (UHMWPE) blends filled with carbon black were studied. The work is a part of the research of electrically conductive materials for the manufacture of self-regulating polymer heaters...
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The structure of the lithosphere of the Black Sea by the results of 3D gravity analysis and seismic tomography
Publicado 2012-10-01“…3D gravity analysis and local seismic tomography have been performed to study the lithosphere structure of the Black Sea. Due to gravity analysis gravity effects of different layers and levels of the model (sea water, four layers in sediments, consolidated crust) have been distinguished and residual gravity anomalies of mantle origin have been obtained. …”3D gravity analysis and local seismic tomography have been performed to study the lithosphere structure of the Black Sea. Due to gravity analysis gravity effects of different layers and levels of the model (sea water, four layers in sediments, consolidated crust) have been distinguished and residual...
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Histological, Morphometrical and Topographical Study of Sebaceous and Sweat Glands in the Skin of Local Black Males Goat
Publicado 2020-12-01“…The aim of this study was to add more information in the field of knowledge regarding the skin structures of a local black goat. topographical, histological and morphometrical studies were carried out in twelve certain different areas of the skin using twenty healthy adult male goats in the autumn season. …”The aim of this study was to add more information in the field of knowledge regarding the skin structures of a local black goat. topographical, histological and morphometrical studies were carried out in twelve certain different areas of the skin using twenty healthy adult male goats in the autumn s...
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Effect of Carbon Black Content on the Properties of Polyamide Coating on CuCr Alloy Surface for Sensor
Publicado 2021-03-01“…In order to improve the corrosion resistance of the micro - arc oxide layer on the by experimental tests CuCr alloy surface for sensor, polyamide coatings were prepared by setting different amount of carbon black. …”In order to improve the corrosion resistance of the micro - arc oxide layer on the by experimental tests CuCr alloy surface for sensor, polyamide coatings were prepared by setting different amount of carbon black. The ratio of epoxy resin to acetone was set at 5∶3(mass ratio, the same below). The in...
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Harmful evaluation of heavy metals from soil layer to the groundwater: Take the Jilin Hunchun Basin as an example
Publicado 2024-01-01Enlace del recursoThe continuous enrichment of heavy metals in soils has caused potential harm to groundwater. Quantitative methods to evaluate the harm of heavy metals in soil to groundwater are lacked in previous studies. Based on the theory of groundwater circulation and solid-liquid equilibrium, a simple and easy...
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High - Temperature Wear Behaviors of the Hardfacing Metal Layer of 42CrMo Continuous Casting Roller
Publicado 2021-07-01“…When wear temperature was higher than 500 ℃, the white bright oxidization products in wear scar declined substantially, and the content of Cr in dark black oxide obviously decreased. Overall, the phase composition and Cr content of the oxide coating was the main factors to determine the high-temperature wear pathway and property of the hardfacing metal layer.…”For studying the high-temperature wear behaviors of hardfacing metal layer of pile-up welding, a high-temperature wear tester was employed to evaluate the high-temperature wear resistance of the 414N hardfacing metal layer of 42CrMo continuous casting roller at 400, 500, 600 ℃, and SEM/EDX and XRD t...
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The origin and depositional processes of shell layers in the Jurassic Ziliujing Formation in the Sichuan Basin and their influences on petroleum accumulation
Publicado 2025-07-01“…In the shell laminae (≤1 cm) and thin interlayers (1-10 cm), micro-scale dissolution pores and microfractures formed in the shell clasts can effectively connect the dissolution pores and black shale matrix. The thick shell interlayers (≥10 cm) lack porosity networks and prevent petroleum migration. …”Unlike other lacustrine shale formations in which carbonate and siliceous interlayers are intercalated, the Dongyuemiao shale is different due to its abundant shell laminae and interlayers. Due to the lack of studies on shell laminae and interlayers, their influence on oil accumulation is still uncl...
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Designing one-dimensional well-isolated flat bands in untwisted bilayer black phosphorus by asymmetric uniaxial strain
Publicado 2025-07-01“…Here we present a versatile method for engineering tunable 1D flat bands in untwisted bilayer black phosphorus using asymmetric uniaxial strain to achieve differential strain in each layer. …”One-dimensional (1D) flat bands in low-dimensional materials enable the study of exotic correlated phases like bond density waves, Luttinger liquids, and Mott insulators. However, the underlying mechanisms driving their formation remain elusive, and achieving well-isolated 1D flat bands in readily a...
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The effect of drip irrigation on the formation of the root system of raspberry seedlings in the conditions of the Non-black soil zone of Russia
Publicado 2022-06-01Enlace del recursoRelevance. Currently, there is an acute problem of meeting the growing demand for berry and fruit products. One of the ways to intensify agricultural production in the field of horticulture and crop production is to increase the efficiency of environmental management through the use of resource-savi...
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The seasonal changes in the position of the upper boundary of the Black Sea hydrogen sulfide zone due to the nature of the dynamic processes development
Publicado 2022-04-01“… The position and seasonal fluctuations of the depth of the maximum water salinity gradient in the Black Sea in the upper 150 m layer (halocline), which is interpreted as the upper boundary of the hydrogen sulfide layer in the sea, were estimated based on the analysis of climatic data of the vertical distribution of salinity for the period 1903—1982. …”The position and seasonal fluctuations of the depth of the maximum water salinity gradient in the Black Sea in the upper 150 m layer (halocline), which is interpreted as the upper boundary of the hydrogen sulfide layer in the sea, were estimated based on the analysis of climatic data of the vertica...
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Bioclimatic coefficients of seedlings of fruit and berry crops under drip irrigation in the conditions of the Central Non-Black Earth Region
Publicado 2024-05-01“…Despite the spread of low-volume irrigation, for the regions of the Central Non-Black Earth Region (Central NonChernozem region) of Russia, only a few studies have been carried out to study drip irrigation regimes for fruit and berry nurseries, therefore, issues related to the development of rational irrigation regimes are of particular relevance.Methods. …”Relevanse. An important condition for the effectiveness of gardening is the systematic replacement of old plantings with new ones. The supply of planting material to the industry is important. Imported planting material does not always meet quality requirements and is not always adapted to the soil...
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Profile of biologically active substances of <i>Aronia mitschurinii</i> leaves growing in the conditions of the Central Black Earth region
Publicado 2024-06-01“…The purpose of the study was to study the profile of biologically active substances of Michurin chokeberry leaves, growing in the territory of the Central Black Earth Region of the Russian Federation, to determine the target groups that determine the pharmacological activity of this raw material.Materials and methods. …”Introduction. Aronia Мitschurinii (Aronia × mitschurinii A.K. Skvortsov & Maitul) is a species obtained by crossing chokeberry (Aronia melanocarpa (Michx.) Elliott) and mountain ash (Sorbus aucuparia L.). This plant is more widely known in the literature as chokeberry. Mitschurin сhokeberry...
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Investigating the Influence of the Weed Layer on Crop Canopy Reflectance and LAI Inversion Using Simulations and Measurements in a Sugarcane Field
Publicado 2025-06-01“…Here, we propose a practical background modification scheme in which black material with near-zero reflectance covers the weed layer and alters the background spectrum of crop canopies. …”Recent research in agricultural remote sensing mainly focuses on how soil background affects canopy reflectance and the inversion of LAI, while often overlooking the influence of the weed layer. The coexistence of crop and weed layers forms two-layered vegetation canopies in tall crops such as sugar...
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Electromagnetic radiation reflection and transmission characteristics of incombustible shields based on carbon-containing materials
Publicado 2019-06-01“…A technique for the synthesis of multi-layer incombustible electromagnetic shields, characterized in comparison with analogues with a reduced cost and mass, has been developed. …”A technique for the synthesis of multi-layer incombustible electromagnetic shields, characterized in comparison with analogues with a reduced cost and mass, has been developed. The prospects of using of carbon-containing materials (charcoal, activated carbon, carbon black) as their main components h...
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Effects of surrounding and underlying shades on the color adjustment potential of a single-shade composite used in a thin layer
Publicado 2023-02-01“…Each specimen’s color was measured against white and black backgrounds or the simple control specimens with a spectrophotometer (CIELAB system). …”ObjectivesThis study aimed to evaluate the surrounding and underlying shades’ effect on the color adjustment potential (CAP) of a single-shade composite used in a thin layer.Materials and MethodsCylinder specimens (1.0 mm thick) were built with the Vittra APS Unique composite, surrounded (dual speci...
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Germinated brown rice relieves hyperlipidemia by alleviating gut microbiota dysbiosis
Publicado 2023-03-01“…It is believed that brown rice, containing the outer bran layer and germ, is beneficial for the remission of hyperlipidemia. …”Hyperlipidemia is a frequent metabolic disorder that is closely associated with diet. It is believed that brown rice, containing the outer bran layer and germ, is beneficial for the remission of hyperlipidemia. This study established a rat model of hyperlipidemia by feeding a high-fat diet. The hypo...
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Detection of a waveguide in the basement of the northwestern shelf of the Black Sea according to the results of reinterpretation of the DSS materials of profiles 26 and 25
Publicado 2011-12-01“…Results of reinterpretation of DSS materials along the profiles worked out within north-western shelf of the Black Sea near 45 years ago are given. Those are two seismic profiles crossed the shelf area: latitudinal DSS Profile 26 (Zmiyinyi Island - Tarkhankut Peninsula) and Profile 25, which crosses the western part of the Black Sea in sub-longitudinal direction. …”Results of reinterpretation of DSS materials along the profiles worked out within north-western shelf of the Black Sea near 45 years ago are given. Those are two seismic profiles crossed the shelf area: latitudinal DSS Profile 26 (Zmiyinyi Island - Tarkhankut Peninsula) and Profile 25, which crosses...
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