Anthracological analyses of charcoal production sites at a high spatial resolution: the role of topography in the historical distribution of tree taxa in the northern Vosges mountains, France

2020 ◽  
Vol 29 (6) ◽  
pp. 641-655 ◽  
Author(s):  
David Gocel-Chalté ◽  
François Guerold ◽  
Hannes Knapp ◽  
Vincent Robin
2020 ◽  
Vol 8 (22) ◽  
pp. 7509-7518
Author(s):  
Hoyeon Choi ◽  
Jack Chun-Ren Ke ◽  
Stefan Skalsky ◽  
Christopher A. Castle ◽  
Kexue Li ◽  
...  

By combining in situ optical spectroscopy with a high spatial resolution mass spectrometry, we directly link the evolution in carrier recombination processes in perovskite films to light-induced ion migration.


2000 ◽  
Vol 128 (10) ◽  
pp. 3605-3617 ◽  
Author(s):  
Lei Wen ◽  
Wei Yu ◽  
Charles A. Lin ◽  
Michel Beland ◽  
Robert Benoit ◽  
...  

Author(s):  
K. Przybylski ◽  
A. J. Garratt-Reed ◽  
G. J. Yurek

The addition of so-called “reactive” elements such as yttrium to alloys is known to enhance the protective nature of Cr2O3 or Al2O3 scales. However, the mechanism by which this enhancement is achieved remains unclear. An A.E.M. study has been performed of scales grown at 1000°C for 25 hr. in pure O2 on Co-45%Cr implanted at 70 keV with 2x1016 atoms/cm2 of yttrium. In the unoxidized alloys it was calculated that the maximum concentration of Y was 13.9 wt% at a depth of about 17 nm. SIMS results showed that in the scale the yttrium remained near the outer surface.


Author(s):  
E. G. Rightor

Core edge spectroscopy methods are versatile tools for investigating a wide variety of materials. They can be used to probe the electronic states of materials in bulk solids, on surfaces, or in the gas phase. This family of methods involves promoting an inner shell (core) electron to an excited state and recording either the primary excitation or secondary decay of the excited state. The techniques are complimentary and have different strengths and limitations for studying challenging aspects of materials. The need to identify components in polymers or polymer blends at high spatial resolution has driven development, application, and integration of results from several of these methods.


Author(s):  
Kosuke Nomura ◽  
Ryutaro Oi ◽  
Takanori Senoh ◽  
Taiichiro Kurita ◽  
Takayuki Hamamoto

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