Results 21 to 30 of about 1,212,853 (207)

Timing and Origin of the Angrite Parent Body Inferred from Cr Isotopes

open access: yesAstrophysical Journal, 2019
Angrite meteorites are some of the oldest materials in the solar system. They provide important information on the earliest evolution of the solar system and accretion timescales of protoplanets.
K. Zhu 朱   +5 more
semanticscholar   +1 more source

Metals and metal isotopes incorporation in insect wings: Implications for geolocation and pollution exposure

open access: yesFrontiers in Ecology and Evolution, 2023
Anthropogenic activities are exposing insects to elevated levels of toxic metals and are altering the bioavailability of essential metals. Metals and metal isotopes have also become promising tools for the geolocation of migratory insects.
Megan S. Reich   +10 more
doaj   +1 more source

High‐Precision Measurement of Stable Cr Isotopes in Geological Reference Materials by a Double‐Spike TIMS Method

open access: yesGeostandards and Geoanalytical Research, 2019
Chromium (Cr) isotopes have been widely used in various fields of Earth and planetary sciences. However, high‐precision measurements of Cr stable isotope ratios are still challenged by difficulties in purifying Cr and organic matter interference from ...
Chunyang Liu   +7 more
semanticscholar   +1 more source

Shape transition and fluctuations in neutron-rich Cr isotopes around N=40 [PDF]

open access: yes, 2012
The spherical-to-prolate shape transition in neutron-rich Cr isotopes from N = 34 to 42 is stud- ied by solving the collective Schrodinger equation for the five-dimensional quadrupole collective Hamiltonian.
Koichi Sato   +5 more
semanticscholar   +1 more source

Study of nuclei around Z = 28 by large-scale shell model calculations

open access: yesEPJ Web of Conferences, 2014
We study Cr and Ni isotopes by using Monte Carlo shell model (MCSM) calculations in a pfg9d5 model space. In the MCSM, a wave function is represented as a linear combination of angular-momentum- and parity-projected deformed Slater determinants(MCSM ...
Tsunoda Yusuke   +4 more
doaj   +1 more source

Can We Discover Truffle’s True Identity?

open access: yesMolecules, 2020
This study used elemental and stable isotope composition to characterize Slovenian truffles and used multi-variate statistical analysis to classify truffles according to species and geographical origin. Despite the fact that the Slovenian truffles shared
Staša Hamzić Gregorčič   +7 more
doaj   +1 more source

Shape changes and large-amplitude collective dynamics in neutron-rich Cr isotopes [PDF]

open access: yes, 2011
Shape-phase transition in neutron-rich Cr isotopes around N=40 is investigated by employing the collective Hamiltonian approach. The inertial functions for large-amplitude vibration and rotation are evaluated by the local normal modes along the axial ...
Kenichi Yoshida, N. Hinohara
semanticscholar   +1 more source

Molecular and isotopic indicators of alteration in CR chondrites [PDF]

open access: yesMeteoritics & Planetary Science, 2006
The CR group of carbonaceous chondrites may represent some of the most primitive extraterrestrial materials available for analysis. However, in contrast to other chondrite groups, the CR organic fraction is poorly characterized. The carbonaceous chondrite literature shows that relatively anhydrous thermal processing results in a condensed, poorly ...
V. K. Pearson, M. A. Sephton, I. Gilmour
openaire   +1 more source

Cr isotopes in physically separated components of the Allende CV3 and Murchison CM2 chondrites: Implications for isotopic heterogeneity in the solar nebula and parent body processes

open access: yesMeteoritics and Planetary Science, 2019
Chromium isotopic data of physically separated components (chondrules, CAIs, variably magnetic size fractions) of the carbonaceous chondrites Allende and Murchison and bulk rock data of Allende, Ivuna, and Orgueil are reported to evaluate the origin of ...
Y. Kadlag, H. Becker, Andreas Harbott
semanticscholar   +1 more source

Survey of ground state neutron spectroscopic factors from Li to Cr isotopes. [PDF]

open access: yesPhysical Review Letters, 2005
The ground state neutron spectroscopic factors for 80 nuclei ranging in Z from 3 to 24 have been extracted by analyzing the past measurements of the angular distributions from (d, p) and (p, d) reactions.
Hui-Ching Lee, B. Tsang, W. G. Lynch
semanticscholar   +1 more source

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