Results 71 to 80 of about 40,961 (371)

Bose-Einstein Condensation of $^{88}$Sr Through Sympathetic Cooling with $^{87}$Sr [PDF]

, 2010
We report Bose-Einstein condensation of $^{88}$Sr, which has a small, negative s-wave scattering length ($a_{88}=-2$\,$a_0$). We overcome the poor evaporative cooling characteristics of this isotope by sympathetic cooling with $^{87}$Sr atoms.
de Escobar, Y. N. Martinez, DeSalvo, B. J., Killian, T. C., Mickelson, P. G., Yan, M.   +4 more
core   +2 more sources

A Review on Microreactor Design for Effective Fischer–Tropsch Process Intensification

Advanced Materials Technologies, EarlyView.
Design strategies for effective Fischer–Tropsch process intensification are summarized based on experimental and simulation experiences. Recommendations for catalyst loading of packed‐bed and wash‐coated microchannel, microtube, micromonolith, and microstructured reactors are discussed.
Yangjun Wei, Lukas Thum, Avela Kunene, Daniel Amkreutz, Rutger Schlatmann, Sonya Calnan   +5 more
wiley   +1 more source

A pilot bioavailable strontium isotope baseline map of Southern British Columbia, Canada

FACETS
Strontium isotopes are used for provenience and mobility studies in archaeology, ecology, and forensic studies, and rely on accurate baseline maps that are used to compare and interpret human and animal strontium ratios.
Damon Tarrant, Joe Hepburn, Virginie Renson, Michael Richards   +3 more
doaj   +1 more source

Properties of metastable alkaline-earth-metal atoms calculated using an accurate effective core potential

, 2003
The first three electronically excited states in the alkaline-earth-metal atoms magnesium, calcium, and strontium comprise the (nsnp) triplet P^o_J (J=0,1,2) fine-structure manifold.
A. Dalgarno, A. R. Edmonds, C. E. Moore, C. J. Pethick, Chris H. Greene, D. P. Craig, G. H. Golub, G. zu Putlitz, H. Katori, I. I. Sobelman, J. D. Jackson, K. J. Bathe, K. J. Bathe, Kevin V. Christ, M. H. Mittleman, R. B. Lehoucq, R. Drozdowski, R. G. Garstang, R. Marrus, R. N. Zare, Robin Santra, U. Fano, X. Xu   +22 more
core   +1 more source

Extreme enrichment in atmospheric 15N15N. [PDF]

, 2017
Molecular nitrogen (N2) comprises three-quarters of Earth's atmosphere and significant portions of other planetary atmospheres. We report a 19 per mil (‰) excess of 15N15N in air relative to a random distribution of nitrogen isotopes, an enrichment that ...
Fischer, Tobias P, Haslun, Joshua A, Hu, Huanting, Kohl, Issaku E, Li, Shuning, Ostrom, Nathaniel E, Schauble, Edwin A, Yeung, Laurence Y, Young, Edward D   +8 more
core   +1 more source

Single‐Cell Metabolic Imaging Reveals Glycogen‐Driven Adaptations in Endothelial Cells

Advanced Science, EarlyView.
Single‐cell metabolic imaging of diabetes‐associated endothelial dysfunction by SRS microscopy reveals dynamic glycogen storage and its role in modulating metabolic adaptations under glucose starvation. Abstract Endothelial dysfunction (ED) is a defining feature of diabetes mellitus (DM) and a key contributor to many metabolic and cardiovascular ...
Rahuljeet S. Chadha, Benjamin Yang, Dongqiang Yuan, Edmund D. Kapelczak, Philip A. Kocheril, Alonso Tapia, Shivansh Mahajan, Adrian Colazo, Naseeb K. Malhi, Joseph A. Ambarian, Xuejing Liu, Tara A. TeSlaa, Zhen B. Chen, Lu Wei   +13 more
wiley   +1 more source

Effect of the vintage year on strontium isotopic ratio (⁸⁷Sr/⁸⁶Sr) of wines: a Portuguese case study. [PDF]

J Sci Food Agric
Abstract BACKGROUND Currently, there is a growing need for wine authenticity tools to face the global wine market and deal with adulteration cases. Stable isotope analyses, recognized by the Organization of Vine and Wine as a tool for detecting authenticity fraud, form the basis of the European Wine Databank, which faces limitations concerning the ...
Thanasi V, Evola D, Victorino G, Ricardo-da-Silva JM, Madeira M, Catarino S.   +5 more
europepmc   +2 more sources

Precision measurement of the 5 2S1/2 - 4 2D5/2 quadrupole transition isotope shift between 88Sr+ and 86Sr+

, 2010
We have measured the isotope shift of the narrow quadrupole-allowed 5 2S1/2 - 4 2D5/2 transition in 86Sr+ relative to the most abundant isotope 88Sr+.
G. K. Woodgate, John Chiaverini, Julian C. Berengut, W. King, Warren E. Lybarger   +4 more
core   +1 more source

Hump‐Shaped Relationship Between Microbial Carbon Use‐Efficiency and Soil Organic Carbon in Alpine Grasslands

Advanced Science, EarlyView.
On the Qinghai–Tibetan Plateau, microbial carbon use efficiency (CUE) peaks at intermediate soil organic carbon levels and declines thereafter. In carbon‐rich soils, the formation of stable mineral‐associated organic carbon is decoupled from microbial CUE.
Yuting Wang, Yongneng Wei, Gangsheng Wang, Yang Ruan, Ling Li, Xiang Liu, Yunfeng Yang, Qirong Shen, Ning Ling   +8 more
wiley   +1 more source

Heterogenous Late Holocene Climate in the Eastern Mediterranean—The Kocain Cave Record From SW Turkey

Geophysical Research Letters, 2021
Palaeoclimate variability must be constrained to predict the nature and impacts of future climate change in the Eastern Mediterranean. Here, we present a late Holocene high‐resolution multiproxy data set from Kocain Cave, the first of its kind from SW ...
Matthew J. Jacobson, Pascal Flohr, Alison Gascoigne, Melanie J. Leng, Aleksey Sadekov, Hai Cheng, R. Lawrence Edwards, Okan Tüysüz, Dominik Fleitmann   +8 more
doaj   +1 more source