Results 111 to 120 of about 330,203 (416)
LC/ESI-MS analysis of underivatized amino acids and mass spectrum [PDF]
arXiv, 2016 We report the method of LC/ESI-MS analysis of underivatized amino acids with corresponding mass spectrum and fragmentation patterns. Diagnostic product ions determined by mass spectrometry can support the qualitative identification and quantitative estimation of individual amino acids. Therefore, the optimization of chromatographic separation using the
arxiv
A hydrous melting and fractionation model for mid-ocean ridge basalts: Application to the Mid-Atlantic Ridge near the Azores [PDF]
, 2004 The major element, trace element, and isotopic composition of mid-ocean ridge basalt glasses affected by the Azores hotspot are strongly correlated with H2O content of the glass.
Asimow, Paul D. +2 more
core +2 more sources
The Depositional Record, EarlyView.A new classification for inland freshwater palaeowetlands to be used in the field or core laboratory by sedimentologists, providing examples from the Guadix Basin (southern Spain). Abstract Present wetlands have proven to be delicate, biodiverse ecosystems, that are natural sinks for CO2 and act as good indicators for climate changes.
S. Pla‐Pueyo +1 more
wiley +1 more source
Research on the Chemical Pretreatment for Mo Isotope Analysis of Special Geological Samples
Yankuang ceshi, 2020 BACKGROUND Mo isotopes have been widely used in the field of geosciences. They can be used to trace the global cycle of Mo, paleoocean redox conditions, mineralization processes, and astronomical evolution.
WEN Jing +4 more
doaj +1 more source
Biogeochemistry of stable carbon isotopes [PDF]
Biochemistry and geochemistry of stable carbon ...
Degens, E. T.
core +1 more source
The Depositional Record, EarlyView.. The Bebedero tectonic depression in San Luis province, Argentina, is a closed drainage basin that has formed as a result of block‐faulting and rifting processes. The Bebedero lake exhibits notable similarities to the endorheic watersheds of the western United States, particularly those of Death Valley, the Saline Valley and, to a lesser extent, the ...
Eimi Ailen Font +2 more
wiley +1 more source
Using impact exsolution to link the Chicxulub collision and Deccan volcanism [PDF]
arXiv, 2017 Observations suggest that impactors and volcanism are connected, but the mechanism that links these events is unknown. This research proposes the impact exsolution hypothesis to explain how planetary scale collisions trigger volcanism. This hypothesis says that when large objects such as asteroids or comets hit planets, they generate seismic waves that
arxiv
Thermal expansion and compressibility of monogermanides of 3d-metals [PDF]
, 2015 Synchrotron diffraction as a function of temperature and pressure, specific heat, magnetic susceptibility and small-angle neutron scattering experiments have revealed an anomalous response of MnGe. Similar but less pronounced behavior has also been observed in Mn$_{1-x}$Co$_x$Ge and Mn$_{1-x}$Fe$_x$Ge solid solutions.
arxiv +1 more source
The Depositional Record, EarlyView.This volume examines tidal sedimentary systems through 11 articles, spanning ancient and modern tidalites, technological advances and implications for human management. Highlighting contributions from Tidalites 2022 and beyond, it underscores tidalites' significance in sedimentology, environmental forecasting and energy transition, reflecting decades ...
Sergio G. Longhitano +2 more
wiley +1 more source
Yankuang ceshi, 2016 Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry (LA-ICP-MS) is commonly used to analyze trace elements in magnetite, which can be divided into internal standard (IS) and no internal standard (NIS) methods according to calibration techniques ...
MENG Yu-miao +4 more
doaj +1 more source