Results 161 to 170 of about 11,258 (258)

Overlooked components of lipid metabolism: Odd‐chain polyunsaturated fatty acids in photosynthetic microorganisms

Journal of Phycology, EarlyView.
Abstract This mini‐review examines odd‐carbon polyunsaturated fatty acids (odd‐PUFAs), a rare but biologically significant group of fatty acids in photosynthetic microorganisms. Odd‐PUFAs are straight‐chain fatty acids containing an odd number of carbon atoms and two or more methylene‐interrupted double bonds. They typically account for less than 1% of
Linda Nedbalová, Milada Vítová, Tomáš Řezanka   +2 more
wiley   +1 more source

Geographical Traceability of <i>Zanthoxylum schinifolium</i> Sieb. et Zucc. Using Stable Isotope and Multi-Element Fingerprinting Combined with Chemometrics. [PDF]

Foods
Zhang W, Zeng T, Fu T, Huang Y, Ji B, Meng X, Fan Y, Tang M.   +7 more
europepmc   +1 more source

Potassium isotopic compositions and exposure ages of evolved and silica‐rich achondrites

Meteoritics &Planetary Science, EarlyView.
Abstract Some of the oldest igneous rocks in the Solar System include evolved and silica‐rich achondrites that originate from parent bodies less than 1000 km in diameter, referred to as planetesimals. While Earth was initially in a molten state and required continental crust formation and plate tectonics to generate andesite bulk compositions, evolved ...
Z. Vaci, Z. Tian, P. Koefoed, M. Habermann, M. Humayun, K. Ziegler, H. Busemann, D. Krietsch, J. M. D. Day, K. Wang   +9 more
wiley   +1 more source

Isotope-specific lithium bioactivity - physiological reality or laboratory oddity? [PDF]

Front Psychiatry
Delacour C, Deline M, Hermannsdóttir H, Lu Z, Gingras MJP, Fromme T.   +5 more
europepmc   +1 more source

Biological fractionation of the isotopes of potassium

, 1964
openaire   +2 more sources

The 40K‐K dating system: 1. Improving data interpretation using new model calculations

Meteoritics &Planetary Science, EarlyView.
Abstract The 40K‐K cosmic‐ray exposure (CRE) dating system offers a promising method for determining exposure ages of iron meteorites by combining the radioactive cosmogenic 40K with the stable cosmogenic isotopes 39K and 41K. However, earlier applications relied on semi‐empirical production models and inconsistent analytical data sets, limiting their ...
Farshid Nozarian, Suzette Timmerman, Ingo Leya   +2 more
wiley   +1 more source

Overview of naturally occurring radioactive materials (NORM) in mineral processing industries and consideration of ionising radiation in life cycle assessment - Part I. NORM inventory. [PDF]

Radiat Environ Biophys
Dvorzhak A, Ugolini R, Venoso G, Leonardi F, Michalik B, Real A, Escribano A, Pérez-Sánchez D, Vanhoudt N, Kallio A, Nuccetteli C, Trotti F, Trevisi R, Fevrier L, Popic JM.   +14 more
europepmc   +1 more source

Characterization of coesite‐bearing impact melt glass from the Hapcheon crater, Korea: Trimodal phase architecture, shock metamorphism, and implications for 40Ar/39Ar geochronology

Meteoritics &Planetary Science, EarlyView.
Abstract We present the first micrometer‐scale, phase‐resolved compositional characterization of impact melt glass from the Hapcheon crater (~1.4 km apparent diameter), the first confirmed impact structure on the Korean Peninsula, integrating EPMA‐WDS (5 μm spot), confocal Raman spectroscopy (<1 μm spot), XRD, and 40Ar/39Ar step‐heating geochronology ...
Jin‐Young Lee, Jeongmin Kim, Sei‐Sun Hong   +2 more
wiley   +1 more source

The Athabasca River regulates methylmercury burdens of waterbirds breeding downstream. [PDF]

Sci Rep
Chételat J, Hebert C, Demers JD, Cooke CA, McClelland C, Angell M, Bergquist B, Evans M, Fahnestock MF, Güneşli K, Greenwood S, Maclean B, McMaster M, Mundy L, Tetreault G, Thomas PJ.   +15 more
europepmc   +1 more source

Partial mycoheterotrophy: a common strategy in arbuscular mycorrhizal plants?

New Phytologist, EarlyView.
Proposed autotrophy to mycoheterotrophy continuum among arbuscular mycorrhizal plants. Summary The vast majority of land plants transfer part of the organic carbon they produce by photosynthesis to arbuscular mycorrhizal (AM) fungi inside their root cells; the fungi in turn help plants to take up nutrients and water from the soil.
Vincent S. F. T. Merckx, Cas Verbeek, Tomas Figura, Jada Carter, Izai A. B. S. Kikuchi, Franziska E. Zahn, Gerhard Gebauer, Sean W. Graham, Kenji Suetsugu, Deyi Wang   +9 more
wiley   +1 more source