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Fossil seed-bearing structures preserved in a newly discovered Early Cretaceous silicified peat in Inner Mongolia, China, provide a partial answer to the origin of flowering plants, according to a study led by Prof. SHI Gongle from the Nanjing Institute of Geology and Paleontology of the Chinese Academy of Sciences (NIGPAS).
A group of researchers from the Shanghai Institute of Optics and Fine Mechanics (SIOM) of the Chinese Academy of Sciences recently came up with a new theory on the source of residual infrared absorption in Ti:sapphire laser crystals.
Chinese Academy of Sciences Recently, a research group from Shanghai Institute of Optics and Fine Mechanics (SIOM) of the Chinese Academy of Sciences proposed a new theory on the origin of residual infrared absorption in Ti:sapphire laser crystals. The related research results have been published in Photonics Research on May 4, 2021. Ti:sapphire (also called Ti-doped α-Al 2O 3) is one of the three basic laser crystal materials. Due to its excellent physical and chemical, spectral, and laser properties, Ti:sapphire has been one of the key materials for super-intense ultrafast laser devices. S...
Study Assesses Impact of Climate Change on Silicate Carbon Weathering Sink Written by AZoCleantechMay 17 2021 The global carbon cycle has been influenced by silicate carbon weathering sink (SCS)—the net carbon sink—for a period of more than millions of years. But the spatial pattern, magnitude, and evolution properties of global SCS are still not clear. Spatial distribution (a) and latitudinal variation (b) of average annual silicate rock weathering carbon sink flux during 1996-2017. Image Credit: Institute of Geochemistry of the Chinese Academy of Sciences. Under the guidance of Professo...
Credit: KOU Wei Researchers have recently extracted the proton mass radius from the experimental data. A research group at the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS) presented an analysis of the proton mass radius in Physical Review D on May 11. The proton mass radius is determined to be 0.67 ± 0.03 femtometers, which is obviously smaller than the charge radius of the proton. In the Standard Model, the proton is a composite particle made of quarks and gluons and it has a non-zero size. The radius of the proton is a global and fundamental property of the p...