Search Results - black layer
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Thinning Effect of Few-Layer Black Phosphorus Exposed to Dry Oxidation
Published 2025-06-01“…Few-layer black phosphorus (BP) holds significant potential for next-generation electronics due to its tunable bandgap and high carrier mobility. …”Few-layer black phosphorus (BP) holds significant potential for next-generation electronics due to its tunable bandgap and high carrier mobility. The layer modulation of BP is essential in the applications of electronic devices ascribed to its thickness-dependent electronic properties. However, prec...
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Absorption Enhancement for Black Phosphorus Active Layer Based on Plasmonic Nanocavity
Published 2018-01-01Subjects: “…Black phosphorus…”In this letter, we propose a strategy to enhance absorption in the black phosphorus absorber based on a nanocavity structure. By introducing a porous silver layer, an enhanced broadband light absorption can be obtained in the spectral range of 520–820 nm. The optical characteristics of th...
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Features of the dynamics of the surface water layer temperature and salinity in the Bosporus Strait and on its Black Sea Shelf
Published 2020-09-01“… According to the data of continuous record during the vessel movement of water temperature and salinity of the surface layer on the Black Sea shelf of the Bosporus and in the strait for 1998—2000, their average three-year values were calculated: 15.45 °С; 17.37 ‰ and 15.20 °С; 17.48 ‰, and their latitudinal distribution and seasonal course were estimated. …”According to the data of continuous record during the vessel movement of water temperature and salinity of the surface layer on the Black Sea shelf of the Bosporus and in the strait for 1998—2000, their average three-year values were calculated: 15.45 °С; 17.37 ‰ and 15.20 °С; 17.48 ‰, and their la...
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Using high performance thin layer chromatography for the detection of pharmacologically active secondary metabolites in Empetrum nigrum L.
Published 2021-12-01“…The article presents the results of the detection of pharmacologically active secondary metabolites in black crowberry Empetrum nigrum L. using the method of high performance thin layer chromatography (HPTLC).Aim. …”Introduction. The article presents the results of the detection of pharmacologically active secondary metabolites in black crowberry Empetrum nigrum L. using the method of high performance thin layer chromatography (HPTLC).Aim. To show the efficiency of HPTLC for conducting preliminary phytochemical...
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The role of the interfacial layer in time -temperat ure dependence of the electrical resistance of hi gh-density polyethylene /carbon black composites
Published 2016-06-01Subjects: Get full textIn order to explain the time-temperature dependence of the electrical resistance of HDPE filled with carbon black, a model is proposed, in which an important role is played by the interfacial layer between the solid-phase filler and the polymer matrix. It is shown that the change in the structure of...
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Effect of long-term fertilization on phosphorus fractions in different soil layers and their quantitative relationships with soil properties
Published 2022-01-01“…We analyzed soil P fractions in different soil layers using a modified Hedley sequential method. …”Investigating the dynamics and distribution of soil phosphorus (P) fractions can provide a basis for enhancing P utilization by crops. Four treatments from a 29-year long-term experiment in black soil with maize cropping were involved in this study: no fertilizer (CK), inorganic nitrogen and potassi...
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Study of the Chemical Composition of the Fruits of Sea Buckthorh Rockthroom, Growing in the Territory of the Central Black Earth Region
Published 2023-02-01Get full textIntroduction. The chemical composition of plants is a combination of all primary and secondary metabolites and can be considered as the result of the implementation of genetic information, a «link» between the genotype and phenotype. The complex of biologically active substances (BAS) of most medici...
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Features of adsorption of binary mixtures of cationic and non-ionic surfactants by non-porous carbon sorbent
Published 2019-11-01Subjects: Get full textThe adsorption of cationic hexadecylpyridinium bromide and non-ionic oxyethylated octylphenols (TХ-45, TX-100, ТХ-305) surfactants from their mixed solutions at non-porous hydrophobic carbon sorbent such as thermal graphitized carbon black has been studied. The molar fraction of oxyethylated oc...
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Fire history and treeline elevation in the Apennines: insights from pedo-anthracological analysis on Monte Cervati, Southern Italy
Published 2025-07-01Subjects: Get full textIntroductionThe treeline elevation in the Apennines is significantly lower than its climatic potential, often attributed to historical anthropogenic disturbances such as fires, logging, and grazing. However, the specific impacts of individual disturbance events, particularly fires, on treeline dynam...
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Density inhomogeneity of the Earth’s crust of the Black Sea and adjacent territories from three dimensional gravity modelling. Part II. Density sections
Published 2020-03-01Subjects: “…Black Sea region…”To obtain a more complete picture of the deep structure and density heterogeneity of the main tectonic structures of the Black Sea megadepression and adjacent territories, density sections were constructed that intersect structures along geotraverses, DPS profiles and illustration profiles. Based o...
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To Blanch an Ethiop: Motifs of Blackness in <i>The Tempest</i> and Ben Jonson’s <i>Masque of Blackness</i>
Published 2025-05-01“…Considering <i>The Tempest</i>’s hyper-popularity within the context of the Black Lives Matter Movement and the birth of We See You White American Theatre’s calls for reform in 2020, this paper seeks to understand anew the way in which Shakespeare constructs blackness in the play. …”In the period between 2021 and 2022 immediately following the COVID-19 lockdowns, there were 37 professional or academic productions of <i>The Tempest</i> in the United States. The play was by far the most produced of Shakespeare’s works in this timespan, and those 37 productions represe...
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Density heterogeneity of the Earth’s crust of the Black Sea megadepression and adjacent territories from three-dimensional gravity modelling. 1. Regional density distribution at di...
Published 2019-09-01“…This paper presents a comprehensive analytical review of the various approaches to the gravity modelling of the Earth’s crust of the Black Sea and adjacent territories. It is shown that even in using the same thickness of sedimentary layers whose total gravitational effect makes a considerable contribution to the observed field the results of different authors do not coincide and in some cases contradict each other. …”This paper presents a comprehensive analytical review of the various approaches to the gravity modelling of the Earth’s crust of the Black Sea and adjacent territories. It is shown that even in using the same thickness of sedimentary layers whose total gravitational effect makes a considerable contr...
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Mantle earthquakes in the Crimea-Black Sea-Caucasus regions
Published 2021-11-01“…In the Crimean-Black Sea region, earthquake foci are located in the lithosphere layer, and the sliding of the lithosphere along the less viscous underlying layer of the upper mantle causes tectonic movements in the lithosphere accompanied by earthquakes. …”The question of the existence of foci of deep earthquakes in the region of the Crimea-Black Sea-Caucasus is extremely important from the point of view of the geodynamics of the region. Previously it was thought that only crustal earthquakes could occur in this region. Recently, results have been obt...
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Fabrication of Black Silicon With Thermostable Infrared Absorption by Femtosecond Laser
Published 2016-01-01“…Annealing-insensitive black silicon with high absorption below the silicon bandgap has been achieved by femtosecond laser direct writing. …”Annealing-insensitive black silicon with high absorption below the silicon bandgap has been achieved by femtosecond laser direct writing. Spike microstructures with sizes ranging from 4 to 25 μm are formed on the surface layer of silicon substrate, and a large amount of phospho...
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Geotectonic and geothermal conditions of the gas discharge zones in the Black Sea
Published 2020-11-01“…Based on comprehensive analysis of manifestation peculiarities of gas emission, chemical and isotopic composition of carbon gases, as well as of geodynamic and geothermal conditions, it can be assumed that methane in the Black Sea Basin seems to be a product of the mixture in variable proportions of methane of different origin with distinct carbon isotopic composition: microbiogenic in near bottom layer of sediments, thermogenic in sedimentary layer and abyssal, entered through the fault zones from mantle in the form of fluid-and-gas flows. …”This paper presents the investigation results of geodynamic, geothermal and geochemical conditions of gas emission zones in the anoxic Black Sea Basin. Gases are manifested in the form of seeps, fountains, mud volcanoes (MV), gas hydrates and authigenic carbonates. Several thousand gas seeps and mo...
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Tunable Anisotropic Perfect Enhancement Absorption in Black Phosphorus-Based Metasurfaces
Published 2020-01-01“…In this work, we theoretically propose an anisotropic metasurface absorber, unit cell of which consists of a continuous monolayer black phosphorus (BP) sheet, sandwiched between a circular silver ring and a dielectric layer stacking on a silver substrate. …”In this work, we theoretically propose an anisotropic metasurface absorber, unit cell of which consists of a continuous monolayer black phosphorus (BP) sheet, sandwiched between a circular silver ring and a dielectric layer stacking on a silver substrate. Numerical results reveal that perfect enhanc...
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Sources on the History of Ethnic Entrepreneurship of the Republic of Adygea and the Black Sea in the Early 1990s
Published 2019-10-01“…Based on a comparative analysis of all the involved sources, their informative capacity was determined, the specifics of privatization of large state enterprises (lack of decisions of federal departments) and agricultural enterprises on the Black Sea coast without land privatization were revealed. …”The necessity of expanding the corpus of sources is substantiated when analyzing the processes of forming entrepreneurship in the early 1990s among ethnic groups of the Adygei of the Republic of Adygea and the Black Sea coast of the Caucasus (Shapsugs). The study is based on archival materials (Stat...
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A histological study of the black-winged kite's retina (Elanus caeruleus, Desfontaines, 1789)
Published 2024-12-01Get full textThe study showed the retina of the diurnal invasive raptor Elanus caeruleus is avascular and supplied nutrition and oxygen by the choroid and pecten oculi. The retina includes two layers: the outer layer is called the pigmented epithelium, and the inner layer is the neural layer. The neural layer c...
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Current level of oil hydrocarbons in Russian coastal waters of the Black Sea and and Azov Sea
Published 2020-10-01“…This is especially true for the Black Sea and Azov Sea which experience significant anthropogenic pressure. …”Aim. Currently, oil pollution remains one of the primary pollutants of the marine environment. This is especially true for the Black Sea and Azov Sea which experience significant anthropogenic pressure. The study presents the results of two-year monitoring studies of the content of oil hydrocarbons...
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Marmara Sea waters with the Mediterranean origin in the formation of the salinity and dynamics fields in the Black Sea
Published 2019-11-01“…The nature of their occurrence and permanent existence was explained by the entry of highly salted Marmara Sea waters of Mediterranean origin into the bottom layers of the Black Sea and their further intrusion from the depths to the surface because there are no other sources of high-saline waters. …”The peculiarities of the bottom of the central basin of the Black Sea are specified, and four depression zones with maximum depths of 2170, 2210, 2171 and 2140 m were allocated for the first time, as well as the positions of the focuses of maximum salinity in the Black Sea water column in a long-te...
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