A new type of solar-system material recovered from Ordovician marine limestone
Meteorites falling on Earth today are believed to represent 100–150 parent bodies. Within 470 Myr ago sediments at a limestone quarry in Sweden, Schmitz et al.
B. Schmitz +5 more
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The oxic degradation of sedimentary organic matter 1400 Ma constrains atmospheric oxygen levels [PDF]
We studied sediments from the ca. 1400 million-year-old Xiamaling Formation from the North China block. The upper unit of this formation (unit 1) deposited mostly below storm wave base and contains alternating black and green-gray shales with very ...
S. Zhang +6 more
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Background: Few prospective studies have investigated the association between paternal occupational exposures and risk of infant congenital heart defects (CHDs).
Mina Hayama-Terada +6 more
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Chromium Isotopes Detection in their Ores with Minimal Errors
The industrial production and use of chromium have grown considerably during the past five decades. Abundances of the chromium isotopes in terrestrial samples are identical to 0.01%.
Nuha AlMasri, Loai Aljerf*
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Measurement of (n,α) cross section for set of structural material isotopes
A novel spectrometer was developed and used to measure the cross section for the (n,α) reaction at IPPE. Direct measurements of the α-particles yield from solid isotopic pure targets of 50, 52 and 53 chromium, 54 and 57 iron, 60 nickel, and 64 zinc were ...
Khryachkov Vitaly +5 more
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Investigating nuclear deformation and longitudinal form factors in some fp-shell nuclei using the shell model and Hartree - Fock approximation [PDF]
The current study examined the nuclear deformation of certain Titanium and Chromium isotopes using the shell model and Hartree - Fock approximation within the fp-shell model space.
A. A. Alzubadi, R. T. Mahdi
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High-density element concentrations in fish from subtidal to hadal zones of the Pacific Ocean
Anthropogenic use of high density, toxic elements results in marine pollution which is bio-accumulating throughout marine food webs. While there have been several studies in various locations analyzing such elements in fish, few have investigated ...
Connor J. Welty +3 more
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Gamma ray heating rates are thought to play a crucial role during the pre-supernova stage of high mass stars. Gamma ray heating rates, due to β±-decay and electron (positron) capture on chromium isotopes, are calculated using proton-neutron quasiparticle
Nabi Jameel-Un, Fayaz Muhammad
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Spin-isospin transitions in chromium isotopes within the quasiparticle random phase approximation
Beta decay and electron capture on isotopes of chromium are advocated to play a key role in the stellar evolution process. In this paper we endeavor to study charge-changing transitions for 24 isotopes of chromium ( 42-65
Babacan T. +3 more
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Concentrator cell methodology in the regeneration and recycle of chromium etching solutions using membrane technology [PDF]
The regeneration of chromium (VI) and the recovery of etched copper from chromium etching solutions by electrodialysis is improved by the addition of a concentrator cell, using ion exchange resins or activated carbon cloth as concentrator media, in the ...
Ganguli, B, Grimes, SM, Chaudhary, AJ
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