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Hace 1 día · A chemical element that’s not even in H 2 O — sulfur — is the reason Earth first got its water, a new study finds, bolstering a similar claim made a year ago. The discovery means our planet ...
Hace 4 días · Sulfuric acid ( American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling ), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen, and hydrogen, with the molecular formula H2SO4. It is a colorless, odorless, and viscous liquid that is miscible with water.
Hace 22 horas · Is it sulfur or sulphur?: Usage Guide a nonmetallic chemical element that is an essential element for all life, resembles oxygen in chemical properties, and is used especially in the …
Hace 22 horas · Herein, we report a strategy for manipulating excited state electronic configurations through the regulation of the sulfur oxidation state to construct eminent organic type I PSs. Combined with experimental results and theoretical calculations, we have successfully revealed the decisive role of high sulfur oxidation states in promoting ROS production capacity.
Hace 1 día · With the increasing demand for large-scale energy storage devices, lithium-sulfur (Li-S) batteries have emerged as a promising candidate because of their ultrahigh energy density (2600 Wh Kg-1) and the cost-effectiveness of sulfur cathodes. However, the notorious shuttle effect derived from lithium polysulfide species ...
Hace 22 horas · Other isotopes, including sulfur, strontium, oxygen, and metal isotopes, such as calcium and zinc, may offer complementary insights that can help to interpret ancient food systems.Analyses of enamel carbon isotopes from eastern and South African hominins have demonstrated the significance of diverse dietary resources for millions of years among several groups of hominins, including the gracile ...
Hace 22 horas · Abstract. In situ formation of lamellar MoS2 nanomaterials between the tribocontacts during frictions through adding oil-soluble sulfur-containing organic molybdenum (SOM) additives into lubricating oils is an alternative route of dispersing pre-formed MoS2 into lubricants directly, which is difficult to disperse homogeneously in oils. In this technology, the synthesis of SOM with appropriate ...
