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Astronomers may have found a signature of life on Venus（图）
Astronomers signature life Venus
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2020/9/18
The astronomers detected a spectral fingerprint, or light-based signature, of the gas phosphine in Venus' atmosphere. Scientists had previously shown that if this poisonous gas were detected on a rock...
The lunar magma ocean volatile signature recorded in chlorine-rich glasses in KREEP basalts 15382 and 15386
chlorine fluorine Moon water glass
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2017/4/10
The last liquids of the lunar magma ocean, known as urKREEP, should be highly enriched in volatiles, such as water,
fluorine, and chlorine. We find chlorine-rich glasses in two pristine KREEP basalts...
Serum aminotransferases in nonalcoholic fatty liver disease are a signature of liver metabolic perturbations at the amino acid and Krebs cycle level
fatty liver gene expression liver injury metabolomics transaminases
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2018/11/27
Background: Extensive epidemiologic studies have shown that cardiovascular disease and the metabolic syndrome (MetS) are associated with serum concentrations of liver enzymes; however, fundamental cha...
Source signature processing in deep water, Gulf of Mexico: comparison between deterministic deconvolution and phase conjugation
oversampling source signature deconvolution
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2015/9/29
The Center for Marine Resources and Environmental Technology has been developing a new method to improve the resolution of high-resolution seismic profiling. To achieve this the source signature is re...
The electrical signature of rock samples exposed to hydrostatic and triaxial pressures
Electrical impedance spectroscopy fracturing carbonate amphibolite pressure
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2015/9/28
The electrical signature of sedimentary (carbonate) and crystalline rock samples was studied in hydrostatic and triaxial pressure experiments up to 300 MPa. The aim was to establish a relation between...
ROTATIONAL SIGNATURE AND POSSIBLE r-MODE SIGNATURE IN THE GALLEX SOLAR NEUTRINO DATA
ROTATIONAL SIGNATURE POSSIBLE r-MODE SIGNATURE
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2015/8/20
Recent analysis of the Homestake data has yielded evidence that the solar neutrino flux varies in time—more
specifically, that it exhibits a periodic variation that may be attributed to r...
Signature of Large Aspect Ratio Roll Vortices in Synthetic Aperture Radar Images of Tropical Cyclones
Large Aspect Ratio Roll Vortices Synthetic Aperture Radar Images Tropical Cyclones
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2015/7/16
Synthetic aperture radar images of tropical cyclones have been processed into high-resolution surface wind vector fields. Examination of the surface wind divergence and wind stress curl show that wind...
Study:Photosynthesis has unique isotopic signature
Photosynthesis isotopic signature
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2015/4/30
Photosynthesis leaves behind a unique calling card, a chemical signature that is spelled out with stable oxygen isotopes, according to a new study in Science. The findings suggest that similar isotopi...
Characterisation of the magmatic signature in gas emissions from Turrialba Volcano, Costa Rica
Volcanic gases superposition lava shallow hydrothermal system magma volcanic gases magma
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2015/1/6
The equilibrium composition of volcanic gases with their magma is often overprinted by interaction with a shallow hydrothermal system. Identifying the magmatic signature of volcanic gases is critical ...
Magnetic signature of large exhumed mantle domains of the Southwest Indian Ridge – results from a deep-tow geophysical survey over 0 to 11 Ma old seafloor
Magnetic signature large exhumed mantle domains the Southwest Indian Ridge deep-tow geophysical survey 0 to 11 Ma old seafloor
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2015/1/6
We investigate the magnetic signature of ultramafic seafloor in the eastern part of the Southwest Indian Ridge (SWIR). There, detachment faulting, continuous over 11 Myr, exhumed large areas of mantle...
Diatoms spread a high εNd-signature in the North Pacific Ocean
diatom silica frustules neodymium isotope seawater island arc loess
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2017/4/11
The Nd and Sr isotopes of the acetic-acid-soluble, hydrochloric-acid-soluble, hydrofluoric-acid-soluble (siliceous)
fractions of settling particles collected in the highly diatom productive Bering Se...
Geochemical signature of aquitard pore water and its paleo-environment implications in Caofeidian Harbor, China
pore water aquitard origin geochemistry China
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2017/4/11
Oxygen-18 (18O), deuterium (D), and chemical patterns were determined in pore water samples extracted from 100-m
depth in Caofeidian Harbor, China. The stable isotopic composition indicates that aqui...
δ13C is a signature of light availability and photosynthesis in seagrass
δ13C signature of light availability photosynthesis in seagrass
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2014/4/4
We explored the role of light-saturated (carbon-limited) photosynthesis on δ13C of turtlegrass (Thalassia testudinum Banks ex König) populations from the clear, blue waters of the Great Bahama Ba...
d13 C is a signature of light availability and photosynthesis in seagrass
d13 C a signature of light availability photosynthesis in seagrass
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2014/4/2
We explored the role of light-saturated (carbon-limited) photosynthesis ond13C of turtlegrass (Thalassia testudinumBanks ex Ko¨ nig) populations from the clear, blue waters of the Great Bahama Bank an...
Anisotropic $H_{c2}$ determined up to 92 T and the signature of multi-band superconductivity in Ca$_{10}$(Pt$_{4}$As$_{8}$)((Fe$_{1-x}$Pt$_{x}$)$_{2}$As$_{2}$)$_{5}$ superconductor
Anisotropic signature multi-band superconductivity superconductor
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2012/2/27
The upper critical fields, $H_{c2}$($T$), of single crystals of the superconductor Ca$_{10}$(Pt$_{4-\delta}$As$_{8}$)((Fe$_{0.97}$Pt$_{0.03}$)$_{2}$As$_{2}$)$_{5}$ ($\delta$ $\approx$ 0.246) are deter...