Results 61 to 70 of about 40,961 (371)

Study on identification model of water inrush source from adjacent limestone aquifer in Paner Coal Mine based on strontium isotope

Meikuang Anquan
Mine sudden water is one of the most threatening geological hazards during mining production, so rapid and effective identification of sudden water sources is the key to prevent mine water damage.
Dun WU, Bo LI, Chao WEI, Jian WU, Jianwei LU   +4 more
doaj   +1 more source

A Tracer Diffusion Study of Diverse Photo‐Ionic Phenomena in Strontium Titanate

Advanced Functional Materials, EarlyView.
Two strong interfacial photo‐ionic effects are demonstrated for the model system SrTiO3 through the application of isotope exchange experiments: UV illumination is found to enhance the oxygen surface exchange coefficient by several orders of magnitude and to depress the surface space‐charge potential substantially.
David M. Schwenkel, Timon F. Kielgas, George F. Harrington, Roger A. De Souza   +3 more
wiley   +1 more source

Expanding radiogenic strontium isotope baseline data for central Mexican paleomobility studies.

PLoS ONE, 2020
Radiogenic strontium isotopes (87Sr/86Sr) have long been used in analyses of paleomobility within Mesoamerica. While considerable effort has been expended developing 87Sr/86Sr baseline values across the Maya region, work in central Mexico is primarily ...
Sofía I Pacheco-Forés, Gwyneth W Gordon, Kelly J Knudson   +2 more
doaj   +1 more source

Magnetic trapping of metastable $^3P_2$ atomic strontium [PDF]

, 2002
We report the magnetic trapping of metastable $^3P_2$ atomic strontium. Atoms are cooled in a magneto-optical trap (MOT) operating on the dipole allowed $^1S_0-^1P_1$ transition at 461 nm.
A. Derevianko, A.L. Migdall, C. E. Simien, C.W. Oates, D.S. Weiss, E.L. Raab, G. Zinner, H. Katori, H. Katori, J. Grunert, J. Prodan, J. Stuhler, M. Bode, M. Machholm, M.P. Robinson, P. Gupta, S. B. Nagel, S. Laha, S.J.J.M.F. Kokkelmans, T. C. Killian, T. Loftus, T.C. Killian, T.P. Dinneen, V. S. Ashoka, W. Ketterle, W. Ketterle, Y. Isoya   +26 more
core   +2 more sources

Trap‐Assisted Transport and Neuromorphic Plasticity in Lead‐Free 2D Perovskites PEA2SnI4

Advanced Functional Materials, EarlyView.
An artificial retina built from lead‐free layered perovskite (PEA)2SnI4 converts light input into a persistent photocurrent and sums successive flashes over time. Micro/nanocrystals integrated on electrodes act as synapse‐like pixels that perform temporal integration directly in hardware. This in‐sensor preprocessing merges detection and computation on
Ofelia Durante, Valeria Demontis, Jonas Riisnaes Karl, Lam Hoi Tung, Sebastiano De Stefano, Daniela Marongiu, Adolfo Mazzotti, Aditya Bhardwaj, Francesco Mattana, Elisa Pili, Selene Matta, Federico Paolucci, Michele Saba, Andrea Mura, Giovanni Bongiovanni, Monica F Craciun, Saverio Russo, Antonio Di Bartolomeo   +17 more
wiley   +1 more source

TO THE QUESTION OF RADIATION SAFETY: STUDY OF SPECIFIC ACTIVITIES OF STRONTIUM-90 AND CESIUM-137 IN SELECTED BABY FOOD PRODUCTS

Siberian Journal of Life Sciences and Agriculture, 2021
Background. Baby food products contain the necessary components for life and elements that are unsafe for health, particularly the radioactive isotopes of strontium-90 and cesium-137.
Anatoly N. Batyan, Vyacheslav A. Kravchenko, Anastasia V. Yakimenko, Vladimir V. Litvyak, Lidia B. Kuzina   +4 more
doaj   +1 more source

Fourier-transform spectroscopy of Sr2 and revised ground state potential

, 2009
Precise potentials for the ground state X1Sigma+g and the minimum region of the excited state 2_1Sigma+u of Sr2 are derived by high resolution Fourier-transform spectroscopy of fluorescence progressions from single frequency laser excitation of Sr2 ...
A. Stein, C. E. Moore, C. H. Townes, E. Tiemann, H. Knöckel   +4 more
core   +1 more source

Scale of human mobility in the southern Andes (Argentina and Chile): A new framework based on strontium isotopes.

American Journal of Physical Anthropology, 2017
OBJECTIVES The goal of this article is to assess the scale of human paleomobility and ecological complementarity between the lowlands and highlands in the southern Andes during the last 2,300 years.
Ramiro Barberena, V. Durán, Paula Novellino, D. Winocur, Anahí Benítez, Augusto Tessone, M. Quiroga, Erik J. Marsh, Alejandra Gasco, Valeria Cortegoso, Gustavo Lucero, C. Llano, K. Knudson   +12 more
semanticscholar   +1 more source

Artificial Intelligence‐Assisted Workflow for Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling

Advanced Materials, EarlyView.
AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll, Ivan Pinto‐Huguet, Enzo Rotunno, Thomas Galvani, Catalina Coll, Payam Habibzadeh Kavkani, Maria Chiara Spadaro, Yann‐Michel Niquet, Martin Børstad Eriksen, Sara Martí‐Sánchez, Georgios Katsaros, Giordano Scappucci, Peter Krogstrup, Giovanni Isella, Andreu Cabot, Gonzalo Merino, Pablo Ordejón, Stephan Roche, Vincenzo Grillo, Jordi Arbiol   +19 more
wiley   +1 more source

An investigation by LA-ICP-MS of possum tooth enamel as a model for identifying childhood geographical locations of historical and archaeological human from New Zealand [PDF]

, 2012
LA -IC P-MS (laser ablation-inductively coupled plasma-mass spectrometry) has been used to analyse enamel from the teeth of brushtail possum (Trichosurus vulpecula) in order to model a method for identifying the childhood geographical origin of human ...
Balks, Megan R., Cameron, Kristie Elizabeth, Littler, Ray A., Manley-Harris, Merilyn, Te Awekotuku, Ngahuia   +4 more
core   +1 more source