Results 51 to 60 of about 31,311 (333)

Variation of strontium isotopes in tektites [PDF]

Geochimica et Cosmochimica Acta, 1964
Abstract The rubidium, strontium, and strontium isotopic compositions have been determined in tektites from Indo-China, Philippine Islands, Java, Australia, Texas, Georgia, Massachusetts and Czechoslovakia. The range of Sr 87 Sr 86 ratios in 18 tektites is from 0.7121 to 0.7223, indicating the results of Pinson et al.
C.C Schnetzler, W. H. Pinson
openaire   +2 more sources

Metal Nanoclusters for Cancer Imaging and Treatment

Advanced Functional Materials, EarlyView.
This review aims to provide a comprehensive summary and discussion of the core–shell design capabilities of metal nanoclusters (NCs) at the atomic level for cancer imaging and treatment. It offers essential insights into the design principles of metal NCs while also encouraging the exploration of other nanomaterials and their potential theranostic ...
Haiguang Zhu, Ziping Wang, Qiaofeng Yao, Ping Zhang, Jianping Xie, Xun Yuan   +5 more
wiley   +1 more source

Advancements in Understanding the Physicochemical Properties of Reticular Materials: An In Situ and Operando Spectroscopic Perspective

Advanced Materials, EarlyView.
This review explores how in situ and operando spectroscopic techniques reveal the real‐time behavior of reticular materials, including MOFs and COFs. These methods track material formation and functionalization, structural changes, defect formation, dynamic responses to external triggers, and catalytic processes.
Bettina Baumgartner, Anna Wach, Xinwei Ye, Evelyn Ploetz, Bert M. Weckhuysen   +4 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

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

A high flux source of cold strontium atoms

, 2015
We describe an experimental apparatus capable of achieving a high loading rate of strontium atoms in a magneto-optical trap operating in a high vacuum environment. A key innovation of this setup is a two dimensional magneto-optical trap deflector located
Chia, Z. Y., Fang, B., Hajiyev, E., Kwong, C. C., Leroux, F., Pandey, K., Pramod, M. S., Wilkowski, D., Yang, T.   +8 more
core   +1 more source

Advanced Air Electrodes for Reversible Protonic Ceramic Electrochemical Cells: A Comprehensive Review

Advanced Materials, EarlyView.
Reversible protonic ceramic electrochemical cells (R‐PCECs) face challenges from sluggish and unstable oxygen reduction and evolution reactions in the air electrode. This review discusses recent progress in triple‐conducting air electrodes, emphasizing mechanisms, performance factors, and design strategies, offering guidance for creating efficient and ...
Xi Chen, Yeshu Tan, Zheng Li, Tong Liu, Yinghao Song, Shuo Zhai, Na Yu, Zongping Shao, Meng Ni   +8 more
wiley   +1 more source

Enhanced Magnetic Trap Loading for Atomic Strontium

, 2015
We report on a technique to improve the continuous loading of atomic strontium into a magnetic trap from a Magneto-Optical Trap (MOT). This is achieved by adding a depumping laser tuned to the 3P1 to 3S1 (688-nm) transition. The depumping laser increases
Barker, D. S., Campbell, G. K., Pisenti, N. C., Reschovsky, B. J.   +3 more
core   +1 more source

Oxygen Isotope Analysis of Human Bone Phosphate Evidences Weaning Age in Archaeological Populations [PDF]

, 2015
Acknowledgements With special thanks to Jean-Jacques Hublin and the MPI-EVA; to Annabell Reiner (MPI-EVA) and Bernd Steinhilber (Universitat Tubingen) for technical support;and to the Deutscher Akademischer Austausch Dienst for financial support to KB ...
Alvarez, Ambrose, Anderson, Arifeen, Ayliffe, Ayliffe, Balasse, Balasse, Balasse, Balasse, Beaumont, Beresford, Bernard, Blaise, Brettell, Britton, Bryant, Bryant, Bryant, Bryant, Budd, Butte, Camin, Chenery, Clark, D'Angela, Dansgaard, Darling, Darling, Daux, Delgado Huertas, Dettman, Dettwyler, Dettwyler, Duijts, Eckardt, Ehleringer, Epstein, Evans, Evans, Evans, Evans, Fildes, Fogel, France, Fricke, Fricke, Fuller, Fuller, Fuller, Fuller, Fuller, Garn, Gat, Genoni, Gustafson, Halas, Hauber, Heller, Hoppe, Hoppe, Horta, Horta, Huelsemann, Iacumin, Jay, Jenkins, Kennedy, Kennedy, Klinken, Koch, Kohn, Kohn, Kohn, Kohn, Kolodny, Land, Levesque, Levin, Levinson, Lin, Longinelli, Longinelli, Longinelli, Longinelli, Longinelli, Longinelli, Luz, Mannino, Martin, Mays, Mays, Mays, Mekota, Montgomery, Müldner, Müldner, Nelson, Nielsen-Marsh, O'Neil, Pellegrini, Pellegrini, Podlesak, Polischuk, Pollard, Quinn, Reitsema, Rich-Edwards, Richards, Sellen, Sellen, Sharp, Sofaer Derevenski, Stuart-Williams, Sánchez Chillón, Tsutaya, Turner-Walker, Tütken, Tütken, Vennemann, Vitzthum, White, White, Widory, Wright, Wright, Yurtsever, Zanconato, Zazzo, Zazzo   +129 more
core   +1 more source

Microlasers Made Entirely from Edible Substances

Advanced Optical Materials, EarlyView.
Several types of microlasers made completely out of edible substances are developed. They can be embedded directly into edible products and enable the sensing of various parameters, including sugar concentration, pH, the presence of bacteria, and exposure to too‐high temperatures.
Abdur Rehman Anwar, Maruša Mur, Georgia Michailidou, Dimitrios N. Bikiaris, Matjaž Humar   +4 more
wiley   +1 more source