Results 21 to 30 of about 1,316,261 (298)
Decreasing extents of Archean serpentinization contributed to the rise of an oxidized atmosphere
Nature Communications, 2021 Throughout the Archean, H2 generation via low-temperature ultramafic serpentinization likely helped prevent atmospheric O2 accumulation and continued until the abundance of ultramafic rocks diminished setting the stage for the Great Oxidation Event.
James Andrew M. Leong +2 more
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Scarcity of scale-free topology is universal across biochemical networks
Scientific Reports, 2021 Biochemical reactions underlie the functioning of all life. Like many examples of biology or technology, the complex set of interactions among molecules within cells and ecosystems poses a challenge for quantification within simple mathematical objects ...
Harrison B. Smith +2 more
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IEEE Access, 2019 Aiming at the problem that the traditional similarity measurement methods cannot effectively measure the similarity of the time series with the difference both in the trend and detail, this paper proposes a new time series similarity measurement method ...
Jiancheng Yin +5 more
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Exploring the Intermembrane Space [PDF]
ACS Chemical Biology, 2007 Despite the importance that many components of the intermembrane space (IMS) of mitochondria play in cellular function, the targeting sequences that are responsible for transporting proteins to this subcellular compartment are not fully understood.
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Spectral interpretation of late-stage mare basalt mineralogy unveiled by Chang’E-5 samples
Nature Communications, 2022 Laboratory spectroscopic and X-ray diffraction analyses on the Chang’E-5 lunar soil samples have demonstrated that the spectral features of lunar late-stage mare basalts are representative of iron-rich high-Ca pyroxene rather than olivine.
Dawei Liu +12 more
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Chemical Space Exploration of Oxetanes [PDF]
International Journal of Molecular Sciences, 2020 This paper focuses on new derivatives bearing an oxetane group to extend accessible chemical space for further identification of kinase inhibitors. The ability to modulate kinase activity represents an important therapeutic strategy for the treatment of human illnesses. Known as a nonclassical isoster of the carbonyl group, due to its high polarity and
Fernando Rodrigues de Sá Alves +2 more
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Generic Strategies for Chemical Space Exploration [PDF]
, 2014 Computational approaches to exploring "chemical universes", i.e., very large sets, potentially infinite sets of compounds that can be constructed by a prescribed collection of reaction mechanisms, in practice suffer from a combinatorial explosion.
Andersen, Jakob L. +3 more
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SensorsWavelength modulation spectroscopy off-axis integrated cavity output spectroscopy (WMS-OA-ICOS) is an in situ detection technique suitable for analyzing trace gases in the atmospheres, characterized by its high sensitivity and ease of integration ...
Tao Wu +10 more
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Towards an integrated scientific and social case for human space exploration [PDF]
, 2004 I will argue that an ambitious programme of human space exploration, involving a return to the Moon, and eventually human missions to Mars, will add greatly to human knowledge. Gathering such knowledge is the primary aim of science, but science's compart-
Crawford, Ian
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Imaging in Space Exploration [PDF]
American Journal of Neuroradiology, 2011 I remember the amazement I felt when man walked on the moon. Today, I feel that monies spent on space exploration would be better used in green energy and ocean preservation programs. We already live on earth, the most perfect spaceship of all: Why go beyond it?
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