Results 211 to 220 of about 130,387 (339)

Coupled nitrogen and oxygen isotope measurements of nitrate along the eastern North Pacific margin [PDF]

, 2005
Daniel M. Sigman, Julie Granger, Peter J. DiFiore, Moritz F. Lehmann, Ruby Ho, Greg Cane, Alexander van Geen   +6 more
openalex   +1 more source

In‐vitro puncture experiment using alligator teeth tracks the formation of dental microwear and its association with hardness of the diet

The Anatomical Record, EarlyView.
Abstract With the development of dental microwear texture analysis (DMTA), there has been an increasing application of DMTA for dietary estimation in extant and fossil reptiles, including dinosaurs. While numerous feeding experiments exist for herbivorous mammals, knowledge remains limited for carnivorous reptiles. This study aimed to qualitatively and
K. Usami, M. O. Kubo
wiley   +1 more source

Evaluating the use of near-infrared reflectance spectroscopy as a proxy measure of carbon and nitrogen isotopes in the leaves of Black Cottonwood (Populus trichocarpa)

, 2014
Andy Leung
openalex   +2 more sources

Metabolic fate of drugs of abuse and new psychoactive substances: A pilot study on a novel workflow using a zebrafish embryo model combined with human microdosing

British Journal of Clinical Pharmacology, EarlyView.
Aim The aim of this study was to develop a novel workflow to identify human urine biomarkers for drugs of abuse and new psychoactive substances. Metabolites of amphetamine, cocaine, LSD, MDMA, methamphetamine, THC, MDMB‐CHMICA, and MDPPP were first identified in a zebrafish embryo (ZE) metabolism study followed by comparison to most abundant human ...
Simon K. Wellenberg, Tanja M. Gampfer, Lea Wagmann, Philip Schippers, Jennifer Herrmann, Rolf Müller, Folker Westphal, Markus R. Meyer   +7 more
wiley   +1 more source

The stable isotopic composition of carbon, nitrogen and hydrogen in some Yamato meteorites

, 1983
M. M. Grady, I. P. Wright, Anthony E. Fallick, C. T. Pillinger   +3 more
openalex   +1 more source

Multi‐Scale Hybrid Modeling to Predict Cell Culture Process With Metabolic Phase Transitions

Biotechnology and Bioengineering, EarlyView.
ABSTRACT To advance understanding of cellular metabolism and reduce batch‐to‐batch variability in cell culture processes, this study introduces a multi‐scale hybrid modeling framework designed to simulate and predict the dynamic behavior of CHO cell cultures undergoing metabolic phase transitions.
Keqi Wang, Sarah W. Harcum, Wei Xie
wiley   +1 more source

Convergence of soil nitrogen isotopes across global climate gradients. [PDF]

Sci Rep, 2015
Craine JM, Elmore AJ, Wang L, Augusto L, Baisden WT, Brookshire EN, Cramer MD, Hasselquist NJ, Hobbie EA, Kahmen A, Koba K, Kranabetter JM, Mack MC, Marin-Spiotta E, Mayor JR, McLauchlan KK, Michelsen A, Nardoto GB, Oliveira RS, Perakis SS, Peri PL, Quesada CA, Richter A, Schipper LA, Stevenson BA, Turner BL, Viani RA, Wanek W, Zeller B.   +28 more
europepmc   +1 more source

SPATIO-TEMPORAL EVIDENCE OF ANTHROPOGENIC NITROGEN IN FLORIDA WATERS USING STABLE ISOTOPE ANALYSIS OF MANATEE BONES

, 2012
Bacalan, Vince
openalex   +1 more source

Mechanistic elucidation of HFIP‐enabled C–Cl bond activation in the synthesis of tetrahydroquinoline derivatives

Bulletin of the Korean Chemical Society, EarlyView.
Mechanistic studies reveal that hexafluoroisopropanol (HFIP) enables C–Cl activation of propargylic halides by stabilizing ion pairs and enhancing effective Brønsted acidity. This cooperative solvent effect allows access to cationic intermediates and promotes cascade formation of tetrahydroquinolines through cyclization and disproportionation ...
Seung Hoon Lee, Hyung Min Chi
wiley   +1 more source

Pristine extraterrestrial material with unprecedented nitrogen isotopic variation

, 2009
G. Briani, M. Gounelle, Yves Marrocchi, S. Mostefaoui, Hugues Leroux, É. Quirico, Anders Meibom   +6 more
openalex   +2 more sources