Results 31 to 40 of about 950,858 (353)

Argon annealing of the oxygen-isotope exchanged manganite La_{0.8}Ca_{0.2}MnO_{3+y}

open access: yes, 2000
We have resolved a controversial issue concerning the oxygen-isotope shift of the ferromagnetic transition temperature T_{C} in the manganite La_{0.8}Ca_{0.2}MnO_{3+y}.
A. Shengelaya   +30 more
core   +1 more source

The oxygen isotope effect on critical temperature in superconducting copper oxides [PDF]

open access: yes, 2004
The isotope effect provided a crucial key to the development of the BCS (Bardeen-Cooper-Schrieffer) microscopic theory of superconductivity for conventional superconductors.
A Mourachkine   +8 more
core   +1 more source

ISOTOPIC CONVERGENCE THEOREM [PDF]

open access: yesJournal of Knot Theory and Its Ramifications, 2013
When approximating a space curve, it is natural to consider whether the knot type of the original curve is preserved in the approximant. This preservation is of strong contemporary interest in computer graphics and visualization. We establish a criterion to preserve knot type under approximation that relies upon pointwise convergence and convergence in
Li, Ji, Peters, Thomas J.
openaire   +3 more sources

Mass-spectrometric research of ion sputtering processes at high primary ion energies [PDF]

open access: yesЖурнал нано- та електронної фізики, 2009
The article is devoted to mass-spectrometric investigation of ion sputtering processes in a wide range of primary ion energies. For this purpose a design of the secondary neutral mass-spectrometer is developed, which unlike the traditional devices of the
V.A. Baturin, S.A. Yeryomin
doaj  

Author Correction: PERK participates in cardiac valve development via fatty acid oxidation and endocardial-mesenchymal transformation

open access: yesScientific Reports, 2021
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Takashi Shimizu   +4 more
doaj   +1 more source

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

open access: yes, 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   +4 more
core   +1 more source

Hydrogeochemistry Characteristics of Groundwater in the Nandong Karst Water System, China

open access: yesAtmosphere, 2022
The hydrogeochemical characteristics of groundwater are an important element in the study of the spatial and temporal variation of groundwater resources, which is crucial to water resources utilization, ecological environmental protection, and human ...
Xiuqun Zhu   +4 more
doaj   +1 more source

Geochemical characteristics of hot spring fluids in the Xunwu-Shicheng fault zone of southern Jiangxi

open access: yesShuiwen dizhi gongcheng dizhi
The Xunwu-Shicheng fault zone, located in the eastern part of southern Jiangxi, is a NNE-trending deep fault zone characterized by dense geothermal hot spring activity and frequent seismic events.
Fuqiang XIAO   +4 more
doaj   +1 more source

Hydrogeology of salt karst under different cap soils and climates (Persian Gulf and Zagros Mts., Iran)

open access: yesInternational Journal of Speleology, 2017
Southern Iran hosts abundant salt karst phenomena in numerous salt diapirs. This paper provides a new insight into the relationships among climate, cap soil and salt karst hydrogeology. Cave systems were documented and mapped.
Jiri Bruthans   +4 more
doaj   +1 more source

The Stalagmite Record of Southern Arabia: Climatic Extremes, Human Evolution and Societal Development

open access: yesFrontiers in Earth Science, 2021
The fluctuating climatic conditions of the Saharo-Arabian deserts are increasingly linked to human evolutionary events and societal developments. On orbital timescales, the African and Indian Summer Monsoons were displaced northward and increased ...
Samuel Luke Nicholson   +3 more
doaj   +1 more source

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