Results 61 to 70 of about 506,225 (309)

Isotopic ecology of fossil fauna from Olduvai Gorge at ca 1.8 Ma, compared with modern fauna

South African Journal of Science, 2013
Light stable isotope ratios (δ13C and δ18O) of tooth enamel have been widely used to determine the diets and water sources of fossil fauna. The carbon isotope ratios indicate whether the plants at the base of the food web used C3 or C4 photosynthetic ...
Nikolaas J. van der Merwe
doaj   +1 more source

Importance in Shifting Circulation Patterns for Dry Season Moisture Sources in the Brazilian Amazon

Geophysical Research Letters, 2023
Water is redistributed from evaporation sources to precipitation sinks through atmospheric moisture transport. In the Brazilian Amazon, the spatial and temporal variability of dry season moisture sources for key agricultural regions has not been ...
Ye Mu, Trent W. Biggs, Charles Jones
doaj   +1 more source

The use of the stable oxygen isotope (18O) to trace the distribution and uptake of water in riparian woodlands [PDF]

, 2002
Streamside vegetation forming narrow "corridors" in temperate regions, is typically dominated by deciduous tree species reflecting strong influences by human activities.
Berthelot, Marie, Lambs, Luc, Lourdes, Jean-.Pierre   +2 more
core  

Moisture source of precipitation in Western Dronning Maud Land, Antarctica [PDF]

Antarctic Science, 2001
Moisture sources for snow falling in Dronning Maud Land (DML), Antarctica, are calculated for 1998 using three dimensional 5-days backward air parcel trajectories. The drilling site of the European Project on Ice Coring in Antarctica (EPICA) in DML is chosen as the main arrival point (75.0°S, 0.01°E). A distinction is made between trajectories with and
Reijmer, C.H., van den Broeke, M.R.
openaire   +2 more sources

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

FEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Comparison of Eulerian and Lagrangian moisture source diagnostics – the flood event in eastern Europe in May 2010 [PDF]

Atmospheric Chemistry and Physics, 2014
Moisture convergence from different sources is an important prerequisite for a heavy-precipitation event. The contributions from different source regions can, however, hardly be quantified from observations, and their assessment based ...
A. Winschall, S. Pfahl, H. Sodemann, H. Wernli   +3 more
doaj   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

FEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc, Blaž Stres, Mirica Karlovits, Igor Karlovits, Petra Jerič, Ondrej Panák, Anja Verbič, Blaž Likozar, Uroš Novak   +8 more
wiley   +1 more source

Significant Shifts in Continental Precipitation Sources in the 21st Century

Water Resources Research
Continental precipitation patterns have undergone profound changes in the 21st century, characterized by an increasing dominance of oceanic moisture sources over terrestrial ones.
Xingxing Zhang, Hua Wu, Lan Wang Erlandsson, Zhaofei Liu, Hou Jiang, Zhaocai Wang, Liguang Jiang, Yizhu Zhu, Yaozhi Jiang, Zhijun Yao, Zhaoliang Li   +10 more
doaj   +1 more source

Variabilidade Interanual da Precipitação e Fluxo de Umidade Sobre a Amazônia Usando o QTCM

Revista Brasileira de Meteorologia
Resumo O objetivo deste trabalho foi avaliar a resposta atmosférica aos padrões de variabilidade interanual da Temperatura da Superfície do Mar nas áreas dos oceanos Atlântico e Pacífico Tropicais, analisando o ciclo sazonal da Divergência de Fluxo de ...
Aline Corrêa de Sousa, Luiz Antonio Candido, Rita Valéria Andreoli   +2 more
doaj   +1 more source

Characterization of Clinical Phenotype to Glial Fibrillary Acidic Protein Concentrations in Alexander Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To determine the concentration of glial fibrillary acidic protein (GFAP) in cerebrospinal fluid (CSF) and plasma in Alexander disease (AxD) and whether GFAP levels are predictive of disease phenotypes. Methods CSF and plasma were collected (longitudinally when available) from AxD participants and non‐AxD controls.
Amy T. Waldman, Asako Takanohashi, Joshua Y. Joung, Geraldine W. Liu, Kaley Arnold, Amy Pizzino, Walter Faig, Sarah Woidill, Sona Narula, Adeline L. Vanderver   +9 more
wiley   +1 more source