Results 151 to 160 of about 187,675 (250)

Apatite in Carbonatite Preserving Primary Magmatic, Post‐Magmatic Overgrowth, and Post India‐Asia Collision‐Related Hydrothermal Alteration: Evidenced From U–Pb Isotope and Trace Element Geochemistry

open access: yesGeological Journal, EarlyView.
U–Pb isotope and trace element geochemistry of apatite from carbonatites of Peshawar Plain Alkaline Igneous Province, western Himalaya shows Permo‐Carboniferous magmatism, an additional magmatic pulse during Cretaceous, and post‐magmatic hydrothermal/metasomatism during Oligocene. ABSTRACT U–Pb isotope and trace element geochemistry of apatite combined
Mehboob ur Rashid   +9 more
wiley   +1 more source

SpecTUS: Spectral Translator for Unknown Structures Annotation from EI-MS Spectra. [PDF]

open access: yesAnal Chem
Hájek A   +5 more
europepmc   +1 more source

Exposure‐Based Toxicological Evaluation of Lead and Elemental Impurities in Encapsulated Green Tea Dietary Supplements Under a Regulatory Framework

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT The consumption of green tea (Camellia sinensis (L.) Kuntze) in the form of encapsulated dietary supplements has increased substantially in recent years; however, data supporting toxicological risk assessment of inorganic contaminants in these products remain limited.
Amanda da Silva Chaves   +6 more
wiley   +1 more source

Intra‐Plant Nitrogen Isotope Fractionation in Maize

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background and aim The natural abundance of nitrogen isotopes (δ15N) provides a powerful integrative tracer of nitrogen uptake and assimilation in plants, yet the internal partitioning of δ15N among plant tissues remains insufficiently understood.
Priscillia Semaoune   +4 more
wiley   +1 more source

Organic Matter Quality and Microbial Activity in Soils Managed With Brachiaria Succession

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Although succession systems and brachiaria improve soil quality, gaps remain in microbial community dynamics, activity, and soil organic matter stocks. Methods The objective was to evaluate the carbon (C) and nitrogen (N) stocks of soil organic matter fractions and their distribution, molecular characterization, enzyme activity ...
Siro Paulo Moreira   +5 more
wiley   +1 more source

Perspectives of High‐Resolution Mass Spectrometry in Soil Science

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Soil biogeochemical research requires specific, sensitive, and accurate methods to identify and quantify organic molecules in order to trace biochemical processes and assess element cycling in complex, heterogenous systems. High‐resolution mass spectrometry (HRMS) has evolved into a transformative tool for unraveling the complex chemical ...
Bruno Glaser   +11 more
wiley   +1 more source

A fast method to quantify free and esterified cholesterol in human plasma and disease models. [PDF]

open access: yesJ Lipid Res
Chocholoušková M   +6 more
europepmc   +1 more source

Mercury cycling during the last glacial period in Arctic Lake El'gygytgyn, NE Russia

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Tectonic processes play a key role in the global mercury (Hg) cycle on geological timescales, by mobilising Hg from deep Earth reservoirs to the surface. These natural fluxes also introduce a dynamic component to the terrestrial Hg cycle that can interact with other environmental signals and influence Hg delivery to sedimentary records.
Alice R. Paine   +7 more
wiley   +1 more source

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