Results 81 to 90 of about 116,875 (192)

Temperature and Pressure Dependence of the Fe-specific Phonon Density of States in Ba(Fe(1-x)Co(x))2As2

, 2009
The {57}Fe-specific phonon density of states of Ba(Fe(1-x)Co(x))2As2 single crystals (x=0.0, 0.08) was measured at cryogenic temperatures and at high pressures with nuclear-resonant inelastic x-ray scattering.
Alp, E. E., Delaire, O., Egami, T., Lucas, M. S., Mandrus, D., Mauger, L., McGuire, M. A., Munoz, J. A., Sales, B. C., Santos, A. M. dos, Sefat, A. S., Singh, D. J., Somayazulu, M., Sturhahn, W., Subedi, A., Tulk, C. A., Xiao, Y., Zhao, J. Y.   +17 more
core   +1 more source

Phase diagram and isotope effect in (PrEu)_0.7Ca_0.3CoO_3 cobaltites exhibiting spin-state transitions

, 2010
We present the study of magnetization, thermal expansion, specific heat, resistivity, and a.c. susceptibility of (Pr$_{1-y}$Eu$_y$)$_{0.7}$Ca$_{0.3}$CoO$_3$ cobaltites. The measurements were performed on ceramic samples with $y = 0.12 - 0.26$ and $y = 1$.
A. A. Kamenev, A. N. Taldenkov, A. R. Kaul, A. V. Kalinov, D. I. Khomskii, E. Dagotto, J. Rohrkamp, K. I. Kugel, L. M. Fisher, M. Yu. Kagan, N. A. Babushkina, O. Heyer, O. Yu. Gorbenko, S. Jodlauk, T. G. Kuzmova, T. Lorenz   +15 more
core   +1 more source

High-resolution dietary reconstruction of victims of the 79 CE Vesuvius eruption at Herculaneum by compound-specific isotope analysis. [PDF]

Sci Adv, 2021
Soncin S, Talbot HM, Fernandes R, Harris A, von Tersch M, Robson HK, Bakker JK, Richter KK, Alexander M, Ellis S, Thompson G, Amoretti V, Osanna M, Caso M, Sirano F, Fattore L, Colonese AC, Garnsey P, Bondioli L, Craig OE.   +19 more
europepmc   +1 more source

MS-DIAL: data-independent MS/MS deconvolution for comprehensive metabolome analysis. [PDF]

, 2015
Data-independent acquisition (DIA) in liquid chromatography (LC) coupled to tandem mass spectrometry (MS/MS) provides comprehensive untargeted acquisition of molecular data.
Arita, Masanori, Cajka, Tomas, Fiehn, Oliver, Higgins, Brendan, Ikeda, Kazutaka, Kanazawa, Mitsuhiro, Kind, Tobias, Ma, Yan, Tsugawa, Hiroshi, VanderGheynst, Jean   +9 more
core  

High Pressure and Road to Room Temperature Superconductivity

, 2018
High pressure serves as a path finding tool towards novel structures, including those with very high Tc.The superconductivity in sulfur hydrides with record value (203 K) is caused by the phonon mechanism.
Gor'kov, Lev, Kresin, Vladimir
core   +1 more source

Assessing the Reliability of Quantitative Fatty Acid Signature Analysis and Compound-Specific Isotope Analysis-Based Mixing Models for Trophic Studies. [PDF]

Biomolecules, 2021
Prokopkin I, Makhutova O, Kravchuk E, Sushchik N, Anishchenko O, Gladyshev M.   +5 more
europepmc   +1 more source

Structural and magnetic properties of Mn3-xCdxTeO6 (x = 0, 1, 1.5 and 2)

, 2011
Mn3TeO6 exhibits a corundum-related A3TeO6 structure and a complex magnetic structure involving two magnetic orbits for the Mn atoms [*]. Mn3-xCdxTeO6 (x=0, 1, 1.5 and 2) ceramics were synthesized by solid state reaction and investigated using X-ray ...
Bayer, Bayer, C. Ritter, E. Politova, Goodenough, Greedan, Ivanov, Izyumov, Kanamori, Kirkpatrick, Kosse, Kosse, Kreisel, Levason, P. Nordblad, R. Mathieu, R. Tellgren, Ramirez, Rodriguez-Carvajal, S.A. Ivanov, Schiffer, Sears, Strobe, Toulouse, V. Proidakova, Weil, Wollan, Zhurov, Zunic   +28 more
core   +1 more source

Essential amino acid carbon isotope ratios as indicators of marine macrophyte response to environmental variation

Frontiers in Marine Science
IntroductionThe carbon isotope ratios (δ13C) of essential amino acids (EAAs), including valine, leucine, isoleucine, threonine, and phenylalanine, in producers are crucial for explaining food-web structures in marine ecosystems. However, few studies have
Hee Young Yun, Sangil Kim, Hyuntae Choi, Ji-Eun Kim, Sang Rul Park, Kyung-Hoon Shin, Kyung-Hoon Shin   +6 more
doaj   +1 more source

Late-season biosynthesis of leaf fatty acids and n-alkanes of a mature beech (Fagus sylvatica) tree traced via ¹³CO₂ pulse-chase labelling and compound-specific isotope analysis. [PDF]

Front Plant Sci, 2022
Speckert TC, Petibon F, Wiesenberg GLB.
europepmc   +1 more source

Evidence of methanogenic activity associated with past fish farming in Lake Soyang, South Korea

Progress in Earth and Planetary Science
In this study, a 54-cm-long sediment core was collected from an area with a history of fish farming to investigate a potential link between methane production and past aquaculture activities in Lake Soyang, a large artificial lake (ca.
Dong-Hun Lee, Jung-Hyun Kim, Sujin Kang, Dahae Kim, Kyung-Hoon Shin   +4 more
doaj   +1 more source