نتایج جستجو برای: hydrothermal condition
تعداد نتایج: 331342 فیلتر نتایج به سال:
The hydrothermal mats, mounds, and chimneys of the southern Guaymas Basin are the surface expression of complex subsurface hydrothermal circulation patterns. In this overview, we document the most frequently visited features of this hydrothermal area with photographs, temperature measurements, and selected geochemical data; many of these distinct habitats await characterization of their microbi...
One of the key-principles of the iron-sulphur world theory is to bring organic molecules close enough to interact with each other, using the surface of pyrite as a substrate in a hydrothermal setting. The present paper explores the relationship of pyrite and organic matter in a hydrothermal setting from the geological record; in hydrothermal calcite veins from Carboniferous limestones in centra...
The number of primary energy sources in Indonesia will run out quickly. Therefore, innovation is required to provide renewable (NRE) that accommodate the increasing necessities. Hydrothermal potential degradation process plastic waste generate NRE. This study aims examine effectiveness hydrothermal breaking down bulky raw materials and role zeolite as a catalyst upgrade quality hydrochar novel ...
[1] The nature of ridge-flank hydrothermal circulation guided by basement outcrops protruding through thick sediments is constrained on the eastern flank of the Juan de Fuca Ridge using combined bathymetric, seismic, and thermal observations and analytical and numerical calculations of coupled fluid-heat flow. Observational data near the western edge of the survey area indicate that young, cool...
In environments isolated from solar radiation, diverse microbial populations and ecosystems are sustained by the chemical energy supplied from Earth!s interior. The most outstanding example is a deep-sea hydrothermal vent, which discharges enormous amounts of reductive energy in the form of reduced sulfur compounds, H2, CH4, and reduced metals during magma degassing and hydrothermal reactions w...
In this study, we use a facile hydrothermal method to synthesize rGO@ZnO1−x composites. The in-situ synthesized ZnO nanosheets are well attached on the rGO sheets, which prevent the aggregation and restacking of ZnO nanosheets, greatly increasing the specific surface area of the synthesized materials. In addition, on account of the reducing synthesis condition, large numbers of oxygen vacancies...
The new coordination polymer [Cd(oct)(L)] (H2oct = octanedioic acid and L = 2-(4-fluorophenyl)-1H-imidazo[4,5-f][1,10]phenanthroline) has been synthesized under hydrothermal condition and characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction. Crystal data: C27H23CdFN4O4, monoclinic, space group C2/c, a = 21.391(4), b = 18.180(4), c = 14.031(3) Å, β = 116.50(3...
Nano sulfated titania was tested as solid acid heterogeneous catalyst for the synthesis of 4-(Trifluoromethyl) coumarin and coumarin derivatives under solvent-free condition. Factorial design evidenced a positive effect of reaction temperature, amount of catalyst, and solvents. This nano-sized sulfated titania has been prepared by a sol-gel hydrothermal process. The prepared sulfated titania s...
The genome sequences of Methylobacter marinus A45, Methylobacter sp. strain BBA5.1, and Methylomarinum vadi IT-4 were obtained. These aerobic methanotrophs are typical members of coastal and hydrothermal vent marine ecosystems.
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