Results 51 to 60 of about 197,924 (340)

Photoactivation of NV Centers in Diamond via Continuous Wave Laser Illumination of Shallow As‐Implanted Nitrogen

Advanced Functional Materials, EarlyView.
This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann, Christoph Findler, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko   +4 more
wiley   +1 more source

Impacts of Thermal Maturity on the Carbon Isotopes of Hopane Compounds in Lacustrine Shale During Compaction Pyrolysis Experiments

Applied Sciences
The carbon isotopic behavior of hopane compounds during thermal maturation remains ambiguous due to limitations in current detection techniques. In this study, a low-maturity lacustrine shale sample was pyrolyzed in a hydrous semi-open pyrolysis system ...
Lu Li, Yan Liu, Xing Wang, Yaohui Xu, Zhigang Wen, Haowei Chen, Gang Yan, Zhongdeng Lu, Zulin Chen, Zeyang Guo   +9 more
doaj   +1 more source

Neutrinos from beta processes in a presupernova: probing the isotopic evolution of a massive star [PDF]

, 2017
We present a new calculation of the neutrino flux received at Earth from a massive star in the $\sim 24$ hours of evolution prior to its explosion as a supernova (presupernova).
Farmer, Robert J., Lunardini, Cecilia, Patton, Kelly M., Timmes, F. X.   +3 more
core   +2 more sources

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

A basin‐wide carbon‐related proxy dataset in arid China

Geoscience Data Journal
Closed basin accounts for about one‐fifth of the global land area and is an important part of the global terrestrial carbon cycle. Due to its relatively close geographical environment and independent carbon cycling system, it is an ideal place to study ...
Yu Li, Yaxin Xue, Mingjun Gao, Zhansen Zhang, Simin Peng, Junjie Duan   +5 more
doaj   +1 more source

Assessing connectivity between an overlying aquifer and a coal seam gas resource using methane isotopes, dissolved organic carbon and tritium [PDF]

, 2015
Coal seam gas (CSG) production can have an impact on groundwater quality and quantity in adjacent or overlying aquifers. To assess this impact we need to determine the background groundwater chemistry and to map geological pathways of hydraulic ...
A Green-Saxena, A Vengosh, BE Fontenot, BFJ Kelly, C Duvert, CD Keeling, CD Keeling, DDR Owen, DE Pataki, DL Valentine, DT Maher, E Dafny, ECP Kinnon, EG Nisbet, EJ Dlugokencky, G Antler, JA Hakala, JF Barker, JW Roy, K Knittel, MJ Whiticar, NG Phillips, P Quay, RB Jackson, RE Fisher, S Cuna, S Qin, SG Osborn, SK Hamilton, SK Hamilton, SL Papendick, TA Moore   +31 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Enantioselective Carbon Isotope Exchange

Journal of the American Chemical Society
The synthesis of isotopically labeled organic molecules is vital for drug and agrochemical discovery and development. Carbon isotope exchange is emerging as a leading method to generate carbon-labeled targets, which are sought due to their enhanced stability in biological systems.
Michael G. J. Doyle, Odey Bsharat, Anna Sib, Volker Derdau, Rylan J. Lundgren   +4 more
openaire   +2 more sources

Isotope Engineering of Carbon Nanotube Systems [PDF]

Physical Review Letters, 2005
4 pages, 4 ...
Simon, F., Kramberger, Ch., Pfeiffer, R., Kuzmany, H., Zolyomi, V., Kurti, J., Singer, P. M., Alloul, H.   +7 more
openaire   +3 more sources

Isotope Shift Measurements of Stable and Short-Lived Lithium Isotopes for Nuclear Charge Radii Determination [PDF]

, 2010
Changes in the mean-square nuclear charge radii along the lithium isotopic chain were determined using a combination of precise isotope shift measurements and theoretical atomic structure calculations.
A. Dax, A. Wojtaszek, B. A. Bushaw, B. A. Bushaw, C. D. P. Levy, C. Zimmermann, G. A. Noble, G. Ewald, G. W. F. Drake, G. W. F. Drake, G. W. F. Drake, H.-J. Kluge, J. Behr, J. Dilling, J. Lassen, J. Walls, K. Pachucki, L. I. Schiff, M. Dombsky, M. Pearson, M. Puchalski, P. Bricault, R. Sánchez, S. Götte, Th. Kühl, W. E. Otten, W. H. Press, W. Nörtershäuser, Z.-C. Yan   +28 more
core   +3 more sources