Results 21 to 30 of about 720,628 (278)

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

Frontiers 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, Mira Kindra, Felipe Dargent, Felipe Dargent, Lihai Hu, D. T. Tyler Flockhart, D. Ryan Norris, Heather Kharouba, Gerard Talavera, Clément P. Bataille, Clément P. Bataille   +10 more
doaj   +1 more source

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

Meteoritics & 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

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

EPJ 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, Otsuka Takaharu, Shimizu Noritaka, Honma Michio, Utsuno Yutaka   +4 more
doaj   +1 more source

Can We Discover Truffle’s True Identity?

Molecules, 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, Lidija Strojnik, Doris Potočnik, Katarina Vogel-Mikuš, Marta Jagodic, Federica Camin, Tea Zuliani, Nives Ogrinc   +7 more
doaj   +1 more source

Quadrupole Collectivity in Neutron-Rich Fe and Cr Isotopes

Physical Review Letters, 2013
Intermediate-energy Coulomb excitation measurements are performed on the N ≥ 40 neutron-rich nuclei (66,68)Fe and (64)Cr. The reduced transition matrix elements providing a direct measure of the quadrupole collectivity B(E2;2(1)(+) → 0(1)(+)) are determined for the first time in (68)Fe(42) and (64)Cr(40) and confirm a previous recoil distance method ...
H. L. Crawford, R. M. Clark, P. Fallon, A. O. Macchiavelli, T. Baugher, D. Bazin, C. W. Beausang, J. S. Berryman, D. L. Bleuel, C. M. Campbell, M. Cromaz, G. de Angelis, A. Gade, R. O. Hughes, I. Y. Lee, LENZI, SILVIA MONICA, F. Nowacki, S. Paschalis, M. Petri, A. Poves, A. Ratkiewicz, T. J. Ross, E. Sahin, D. Weisshaar, K. Wimmer, R. Winkler   +25 more
openaire   +5 more sources

Evidence for shape coexistence in 52Cr through conversion-electron and pair-conversion spectroscopy [PDF]

EPJ Web of Conferences, 2020
Electric monopole (E0) transitions are a highly sensitive probe of the charge distribution of an atomic nucleus. A large E0 transition strength (ρ2(E0)) is a clear indicator of nuclear shape coexistence.
Dowie J. T. H., Kibédi T., Stuchbery A. E., Akber A., Avaa A., Bignell L. J., Chisapi M. V., Coombes B. J., Eriksen T. K., Gerathy M. S. M., Gray T. J., Hoang T. H., Ideguchi E., Jones P., Kumar Raju M., Lane G. J., McCormick B. P., Mitchell A. J., Tee B. P. E.   +18 more
doaj   +1 more source

Phytoextraction of Cr(VI) from soil using Portulaca oleracea [PDF]

, 2013
Cr(VI) represents an environmental challenge in both soil and water as it is soluble and bioavailable over a wide range of pH. In previous investigations, Portulaca oleracea (a plant local to the United Arab Emirates (UAE)) demonstrated particular ...
Alyazouri, Ayman H., Tayim, Hassan A., Tayim, Hassan, Humphreys, Paul N., Al-Sayah, Mohammad, Hassan, A. Tayim, Humphreys, Paul, Al-Sayah, Mohammad H., Jewsbury, Roger, Alyazouri, Ayman, Jewsbury, Roger A.   +10 more
core   +1 more source

Redox reactions and the influence of natural Mn oxides on Cr oxidation in a contaminated site in northern Italy: evidence from Cr stable-isotopes and EPR spectroscopy

E3S Web of Conferences, 2013
Hexavalent chromium-contaminated groundwaters and sediments in northern Italy have been studied using the Cr stable-isotope systematics and electron spin resonance spectroscopy (ESR), in order to explore redox changes and soil-groundwater interactions ...
Marafatto F. F., Petrini R., Pinzino C., Pezzetta E., Slejko F., Lutman A.   +5 more
doaj   +1 more source

Ab Initio Phase Diagram of Chromium to 2.5 TPa

Applied Sciences, 2022
Chromium possesses remarkable physical properties such as hardness and corrosion resistance. Chromium is also a very important geophysical material as it is assumed that lighter Cr isotopes were dissolved in the Earth’s molten core during the planet’s ...
Samuel R. Baty, Leonid Burakovsky, Darby J. Luscher, Sky K. Sjue, Daniel Errandonea   +4 more
doaj   +1 more source

Passage kinetics of concentrates in dairy cows measured with carbon stable isotopes

Animal, 2013
Fractional passage rates form a fundamental element within modern feed evaluation systems for ruminants, but knowledge on feed-specific fractional passage is largely lacking. Commonly applied tracer techniques based on externally applied markers, such as
D. Warner, J. Dijkstra, S. Tamminga, W.F. Pellikaan   +3 more
doaj   +1 more source