Results 121 to 130 of about 149,407 (284)

Carbon, Nitrogen, and Corresponding Stable Isotope Signatures Reveal Channel Banks as Major Sediment Sources in a Tropical Agricultural Watershed

Land Degradation &Development, EarlyView.
ABSTRACT Uncertainties about the applicability of δ13C and δ15N as tracers of sediment sources in tropical river basins highlight the need for more in‐depth investigations of these isotopes. This study therefore assessed the effectiveness of δ13C and δ15N signatures in discriminating sediment sources in an agricultural catchment in Northeast Brazil ...
Fábio Farias Amorim, Yuri Jacques Agra Bezerra da Silva, Rennan Cabral Nascimento, Ygor Jacques Agra Bezerra da Silva, Angelo Jamil Maia, Tales Tiecher, Jean Paolo Gomes Minella, Yusheng Zhang, Hari Ram Upadhayay, Simon Pulley, Adrian L. Collins   +10 more
wiley   +1 more source

Cluster decay half lives of trans-lead nuclei within the Coulomb and proximity potential model

, 2012
Within the Coulomb and proximity potential model (CPPM) the cluster decay process in {199-226}^Fr, {206-232}^Ac, {209-237}^Th, {212-238}^Pa, {217-241}^U, {225-242}^Np, {225-244}^Pu, {231-246}^Am, {202-230}^Ra and {233-249}^Cm isotopes leading to the ...
Priyanka, B., Santhosh, K. P., Unnikrishnan, M. S.   +2 more
core   +1 more source

Multi‐Solvent Suppression Ultrafast 2D COSY for High‐Throughput Wine Screening

Magnetic Resonance in Chemistry, EarlyView.
An interleaved ultrafast COSY with multi‐solvent suppression was developed for wine analysis to overcome limitations often associated with 1D 1H NMR (signal overlap) and conventional 2D NMR (long acquisition times) methods. Within an acquisition time of ~20 min, it revealed hidden metabolite peaks and cross peaks for improved annotation and ...
Pia S. Mayer, Jérémy Marchand, Marine P. M. Letertre, Jean‐Nicolas Dumez, Søren B. Engelsen, Patrick Giraudeau   +5 more
wiley   +1 more source

Characterization and treatment monitoring of ureagenesis disorders using stable isotopes

npj Metabolic Health and Disease
Urea cycle disorders (UCDs) are a group of rare conditions, possibly life-threatening and without definitive cure besides liver transplantation. Traditional biochemical analyses/biomarkers cannot reliably determine changes in the UC-function from ...
Gabriella Allegri, Martin Poms, Nadia Zürcher, Véronique Rüfenacht, Nicole Rimann, Déborah Mathis, Beat Thöny, Matthias Gautschi, Ralf A. Husain, Daniela Karall, Karolina Orchel-Szastak, Francesco Porta, Dominique Roland, Barbara Siri, Carlo Dionisi-Vici, René Santer, Johannes Häberle   +16 more
doaj   +1 more source

Assignments of backbone 1H, 13C and 15N resonances in H-Ras (1–166) complexed with GppNHp at physiological pH [PDF]

, 2012
The small GTPase Ras is an important signaling molecule acting as a molecular switch in eukaryotic cells. Recent findings of global conformational exchange and a putative allosteric binding site in the G domain of Ras opened an avenue to understanding ...
Kovriguine, Evgueni, O\u27Connor, Casey
core   +1 more source

Determination of gamma-ray widths in $^{15}$N using nuclear resonance fluorescence

, 2015
The stable nucleus $^{15}$N is the mirror of $^{15}$O, the bottleneck in the hydrogen burning CNO cycle. Most of the $^{15}$N level widths below the proton emission threshold are known from just one nuclear resonance fluorescence (NRF) measurement, with ...
Bemmerer, D., Caciolli, A., Fülöp, Zs., Massarczyk, R., Michelagnoli, C., Reinhardt, T. P., Schwengner, R., Szücs, T., Takács, M. P., Ur, C. A., Wagner, A., Wagner, L.   +11 more
core   +4 more sources

The effects of seasonality and parasitism on diet and habitat selection in the common periwinkle

Oikos, EarlyView.
The common periwinkle Littorina littorea is an ecologically important grazer, known for its strong influence on algal communities and its role in structuring ecosystems. It serves as the first intermediate host for several trematode species in the Baltic Sea, especially for the fluke Cryptocotyle lingua.
Friederike Gronwald, Claudia Bommarito, Dakeishla M. Díaz‐Morales, Alessandro Manfrin, Cindy Martinez Reyes, Milen Nachev, Bernd Sures, Florian Weinberger   +7 more
wiley   +1 more source

Nitrification-denitrification in WSP: a mechanism for permanent nitrogen removal in maturation ponds [PDF]

, 2009
A pilot-scale primary maturation pond was spiked with 15N-labelled ammonia (15NH4Cl) and 15N labelled nitrite (Na15NO2), in order to improve current understanding of the dynamics of inorganic nitrogen transformations and removal in WSP systems.
Camargo Valero, M, Curtis, T, Davenport, R, Mara, D, Newton, R, Read L F   +5 more
core  

Disarming the Hsp70–Bim Alliance: Small‐Molecule and Peptidic Disruptors of a Chaperone‐Apoptotic Switch in Cancer

ChemistryOpen, EarlyView.
Targeting a nucleotide‐sensitive groove on Hsp70 that binds the Bim BH3 helix, we integrate structures, biophysics, and SAR from peptides, fragments, and phenalene‐dicarbonitrile “wedges.” These disrupt the Hsp70–Bim complex with sub‐µM cellular engagement and in vivo activity while sparing Hsp90/mortalin.
Emadeldin M. Kamel, Mohammed Al‐zharani, Lina M. Alneghery, Noha A. Ahmed, Faris F. Aba Alkhayl, Al Mokhtar Lamsabhi   +5 more
wiley   +1 more source

Azole antifungal contaminants disrupt mycorrhizal function and risk agricultural sustainability

PLANTS, PEOPLE, PLANET, EarlyView.
Global food production is increasingly threatened by soil degradation, climate change and the rising costs of synthetic fertilisers. Circular agriculture, which promotes resource reuse, is a promising solution, but using treated wastewater and biosolids in farming introduces risks from emerging contaminants like pharmaceutical residues.
Emily K. Durant, Katie J. Field, J. Brett Sallach, Sara Moeskjær, Alex Williams, Laura J. Carter   +5 more
wiley   +1 more source