Results 61 to 70 of about 35,458 (292)

Electrode and Microstructure Dependence of Oxygen Diffusion in Ferroelectric Hafnium Zirconium Oxide Thin Films

Advanced Functional Materials, EarlyView.
Significant nanoscale oxygen diffusion coefficient variations are measured in ferroelectric hafnium zirconium oxide films with grain boundaries and electrode interfaces exhibiting values 104 times larger than the grain cores. Overall coefficients are 10X larger for films prepared with metal nitride electrodes compared to refractory metals. New insights
Liron Shvilberg, Thomas W. Pfeifer, Chuanzhen Zhou, Yong Kyu Choi, Duk‐Hyun Choe, Patrick E. Hopkins, Jon F. Ihlefeld   +6 more
wiley   +1 more source

Relative importance of climatic and edaphic factors as drivers of plant δ15N along a longitudinal transect

Ecosystem Health and Sustainability, 2022
Many studies have shown that climatic and edaphic factors influence the variations in nitrogen isotopes (δ15N) in terrestrial ecosystems. However, the relative importance of co-varying climatic and edaphic controls on plant δ15N remains somewhat unclear.
Xianzhao Liu, Tianhao Wang, Qing Su
doaj   +1 more source

Reconstructing historical trends of polycyclic aromatic hydrocarbon deposition in a remote area of Spain using herbarium moss material [PDF]

, 2010
Herbarium mosses from 1879-1881, 1973-1975 and 2006-2007 were used to investigate the historical changes of atmospheric deposition of polycyclic aromatic hydrocarbons (PAHs) at a remote site located in Northern Spain.
Gonzalez, Laura, Ederra, Alicia, Foan, Louise, Sablayrolles, Caroline, Sablayrolles, Caroline,, Simon, Valérie, Ederra, A., Santamaria, J.M., Lasheras, Esther, Santamaria, Jesus Miguel, Elustondo, David, Gonzalez, L   +11 more
core   +1 more source

Long‐Range Coordination Environment Modulates Single‐Atom Local States and Systemic Impact on CO2 Photoconversion

Advanced Functional Materials, EarlyView.
Terminal groups on Cu porphyrins modulate the electronic states of single‐atom Cu centers through a long‐range electronic effect, without altering the Cu coordination geometry. Meanwhile, a multi‐descriptor framework is established that incorporates porphyrin regulation, hybrid catalyst properties, and CO2 photoreduction capabilities.
Yi Zhang, Jintao Dong, Xiahe Chen, Xiyang Wang, Tiange Wei, Yue Zhu, Tai‐Sing Wu, Yun‐Fang Yang, Shao‐Yuan Leu, Keke Wang, Yuanbin She, Huaming Li, Jiexiang Xia, Molly Meng‐Jung Li   +13 more
wiley   +1 more source

Nitrogen isotope ratio (δ15N): a nearly unexplored indicator that provides useful information in viticulture

OENO One
The study of the natural abundance of nitrogen-stable isotopes is an aspect of viticulture research that has received limited attention. While stable isotopes of carbon, oxygen and hydrogen have received significant attention, nitrogen isotope ratio ...
Luis Gonzaga Santesteban, Maite Loidi, Inés Urretavizcaya, Mónica Galar, Sara Crespo-Martínez, José Bernardo Royo, Carlos Miranda   +6 more
doaj   +1 more source

Nitrogen Isotopic Composition and Density of the Archean Atmosphere [PDF]

Science, 2013
Same As It Ever Was Nitrogen constitutes approximately 78% by volume of Earth's atmosphere and is a key component in its chemical and physical characteristics. It is not clear whether N 2 has been so abundant throughout Earth's geological history. Marty et al.
Marty, Bernard, Zimmermann, Laurent, Pujol, Magali, Burgess, Ray, Philippot, Pascal   +4 more
openaire   +3 more sources

Magnetic‐Field Control of Surface States in CoFe2O4 Thin Films for Nitrate Electroreduction to Ammonia

Advanced Functional Materials, EarlyView.
Magnetic‐field‐assisted CVD of heterometallic single‐source precursors modulates thin‐film surface electronic structure and interfacial charge transfer. Field‐grown (Cobalt ferrite‐1T)CF‐1T films exhibit stabilized electronic states, lower kinetic barriers, and markedly enhanced nitrate‐to‐ammonia electrocatalysis versus (Cobalt ferrite‐0T) CF‐0T ...
Touraj Karimpour, Younes Mousazade, Simon Diel, Shilendra Kumar Sharma, Tisita Das, Nathália C. Verissimo, Thomas Fischer, Ziyaad Aytuna, Andreas Lichtenberg, Sudip Chakraborty, Marcel Risch, Sanjay Mathur   +11 more
wiley   +1 more source

A nitrogen isotope study of bencubbinites [PDF]

Meteoritics & Planetary Science, 2000
Abstract— ‐Nitrogen‐isotopic compositions of the bencubbinites—Bencubbin, Hammadah al Hamra (HH) 237, and Queen Alexandra Range (QUE) 94411—and in a petrographically similar chondrite Grosvenor Mountains (GRO) 95551 were measured by stepped‐combustion static mass spectrometry. Hammadah al Hamra 237 and QUE 94411 contain isotopically heavy N, but not as
N. SUGIURA, S. ZASHU, M. WEISBERG, M. PRINZ   +3 more
openaire   +1 more source

Microscopic Origin of Temperature‐Dependent Anisotropic Heat Transport in Ultrawide‐Bandgap Rutile GeO2

Advanced Functional Materials, EarlyView.
Rutile GeO2${\rm GeO}_{2}$ exhibits orientation‐dependent heat transport with temperature‐dependent anisotropy, showing higher cross‐plane thermal conductivity along [001] than along the equivalent in‐plane [100] and [010] directions. Temperature‐dependent TDTR measurements and first‐principles phonon calculations identify the microscopic phonon ...
Pouria Emtenani, Marta Loletti, Felix Nippert, Eduardo Bedê Barros, Zbigniew Galazka, Hans Tornatzky, Christian Thomsen, Juan Sebastián Reparaz, Riccardo Rurali, Markus R. Wagner   +9 more
wiley   +1 more source

Stable Isotope Compositions of Wild and Farmed S. Paramoamosion and its Implication for Tracebility

Journal of Isotopes, 2014
To evaluate the possibility of using stable isotopes for discriminating wild and farmed mangrove crabs, Stable carbon and nitrogen isotope ratios of Scylla paramamosion tissues were analyzed. The carbon and nitrogen isotope ratios of wild S. paramamosion
GUO Jie-min1,2;LIN Guang-hui1,3
doaj   +1 more source