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Rare Mineral from Martian Crater was Created in Explosive Volcanic Eruption Over 3 Billion Years Agosource:sci-newsTridymite is a high-temperature, low-pressure form of quartz that is extremely rare on Earth, and it wasn’t clear how a chunk of it ended up in Gale Crater on Mars, the home of NASA’s Curiosity rover.Gale Crater, which is at least 3.8 billion years old, was chosen as Curiosity’s landing site due to the likelihood that it once held liquid water, and the rover found evidence that confirmed Gale Crater was a lake as recently as 1 billion years ago.In July 2015, Curiosity drilled into...
Release time: 2022 - 07 - 28
viewed:3
source:innovationintextilesFashion for Good and Textile Exchange are jointly releasing The Textile Tracer Assessment – a detailed guide to physical tracer technologies applicable to the textile supply chain.With the increasing importance placed on fibre provenance, authenticity and production, and the growing number of technologies available, the assessment provides fashion ecosystem stakeholders with an overview to evaluate and determine which tracer technologies would best suit their operational needs.Today, there is a lack of reliable verification for fibres, materials, and finished product...
Release time: 2022 - 07 - 27
viewed:1
Synthesis of novel MoWO4 with ZnO nanoflowers on multi-walled carbon nanotubes for counter electrode application in dye-sensitized solar cells source:natureAbstractNovel MoWO4 with ZnO nanoflowers was synthesized on multi-walled carbon nanotubes (MW-Z@MWCNTs) through a simple hydrothermal method, and this unique structure was applied as a counter electrode (CE) for dye-sensitized solar cells (DSSC) for the first time. The synergetic effect of ZnO nanoflowers and MoWO4 on MWCNTs was systematically investigated by different techniques. The amount of MWCNTs was optimized to achieve the best ...
Release time: 2022 - 07 - 26
viewed:3
source:sci-newsTo build the global map of hydrogen abundances on the Moon, Johns Hopkins Applied Physics Laboratory researcher David Lawrence and his colleagues used data from the Neutron Spectrometer, one of five instruments mounted on NASA’s Lunar Prospector spacecraft.Lunar Prospector, which was deployed by NASA in 1998, orbited the Moon for 1.5 years and sent back the first direct evidence of enhanced hydrogen at the lunar poles, before impacting the lunar surface.The researchers calibrated the data to quantify the amount of hydrogen by the corresponding decrease of neutrons measured by th...
Release time: 2022 - 07 - 25
viewed:1
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