source:lva.lenovoBasalt is a type of volcanic rock that is formed when lava with a high content of mafic minerals (such as pyroxene and olivine) cools and solidifies. Basalt lava eruptions occur when this molten rock is erupted from a volcano and comes into contact with the Earth’s surface. These eruptions can be explosive, producing ash and tephra, or they can be more effusive, flowing slowly and steadily over long periods of time. Basalt lava is typically more fluid than other types of lava, which allows it to flow easily and cover large areas.n the past, massive magma eruptions have led to ...
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2023
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source：sciencedailyAn international team of researchers from Japan and Germany has developed a new system that upconverts blue LED light into high-energy Ultraviolet B, or UVB, light.As the system does not require any of the toxic and inefficient materials that are traditionally used for UVB production, it opens the door for applications using UVB that are more sustainable and eco-friendly. The results were reported in the journal Angewandte Chemie.It is hard to avoid talk about ultraviolet light -- especially during the summertime. These high-energy rays produced by the sun are outside the vi...
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2023
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souece:resource-recyclingWhen the founders of Noveon decided to tackle rare earth magnet recycling, they started at the beginning of the product’s life cycle instead of the end. Chris Dunn, Noveon CEO, said he made a battery manufacturing company first, but one with “resource, material-agnostic technology that allows you to even kind of redefine a supply chain using recycling material as a feedstock to directly support the magnet manufacturing process.” Noveon’s pilot plant in Austin, Texas was built in 2016 following several years of foundational work, research and development, Dunn...
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2023
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The role of Nd3+ concentration in the modulation of the thermometric performance of Stokes/anti-Stokes luminescence thermometer in NaYF4:Nd3+source:natureAbstractThe growing popularity of luminescence thermometry observed in recent years is related to the high application potential of this technique. However, in order to use such materials in a real application, it is necessary to have a thorough understanding of the processes responsible for thermal changes in the shape of the emission spectrum of luminophores. In this work, we explain how the concentration of Nd3+ dopant ions affects the cha...
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2023
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