Results 11 to 20 of about 43,636 (238)

How the anisotropy of surface oxide formation influences the transient activity of a surface reaction

open access: yesNature Communications, 2021
Surface oxide formation under reaction conditions may change the catalytic activity of a catalyst. Here, the authors explore the effect of atomic structure of Rh surfaces on the surface oxide formation and its influence on catalytic activity in hydrogen ...
P. Winkler   +7 more
doaj   +1 more source

Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance?

open access: yesBeilstein Journal of Nanotechnology, 2021
Platinum–carbon catalysts are widely used in the manufacturing of proton-exchange membrane fuel cells. Increasing Pt/C activity and stability is an urgent task and the optimization of their structure seems to be one of the possible solutions.
Kirill O. Paperzh   +5 more
doaj   +1 more source

Transmission and scanning electron microscopy of cutis rhomboidalis

open access: yesAnais Brasileiros de Dermatologia, 2021
Cutis rhomboidalis nuchae was assessed in a 65-year-old patient. Optical microscopy showed basophilic agglomerations in the reticular dermis with decreased elastic fibers.
Ângela Faistauer Torre   +3 more
doaj   +1 more source

Highly Coherent Femtosecond Electron Pulses for Ultrafast Transmission Electron Microscopy [PDF]

open access: yesEPJ Web of Conferences, 2019
We describe the implementation and detailed characterization of a laser-triggered field-emitter electron source integrated into a modified transmission electron microscope. Highly coherent electron pulses enable high resolution ultrafast electron imaging
Bach Nora   +9 more
doaj   +1 more source

Monkeypox: A Histopathological and Transmission Electron Microscopy Study

open access: yesMicroorganisms, 2023
The global outbreak of human monkeypox virus (hMPXV1) in 2022 highlighted the usefulness of dermatological manifestations for its diagnosis.
Chiara Moltrasio   +8 more
doaj   +1 more source

Conventional transmission electron microscopy

open access: yesMolecular Biology of the Cell, 2014
Researchers have used transmission electron microscopy (TEM) to make contributions to cell biology for well over 50 years, and TEM continues to be an important technology in our field. We briefly present for the neophyte the components of a TEM-based study, beginning with sample preparation through imaging of the samples.
Winey, Mark   +3 more
openaire   +5 more sources

Ultrastructural aspects of pseudoxanthoma elasticum [PDF]

open access: yesAnais Brasileiros de Dermatologia, 2017
: We report the ultrastructural findings in a case of a 72-year-old black woman with confluent yellowish papules in the cervical region. She had no comorbidities.
Hiram Larangeira de Almeida Jr.   +3 more
doaj   +1 more source

Effect of processing parameters on microstructure of additively manufactured α+β titanium alloys [PDF]

open access: yesMATEC Web of Conferences
The effect of processing parameters on the microstructure was investigated on three α+β alloys, namely Ti6Al4V (Ti64), Ti6Al2Sn4Zr6Mo (Ti6246) and Ti6.5Al3.5Mo1.5Zr0.3Si (TC11) fabricated by laser powder bed fusion (LPBF).
Maqina Nonkosi Elizabeth   +2 more
doaj   +1 more source

From zirconia to yttria: Sampling the YSZ phase diagram using sputter-deposited thin films

open access: yesAIP Advances, 2016
Yttria-stabilized zirconia (YSZ) thin films with varying composition between 3 mol% and 40 mol% have been prepared by direct-current ion beam sputtering at a substrate temperature of 300 °C, with ideal transfer of the stoichiometry from the target to the
Thomas Götsch   +4 more
doaj   +1 more source

Characterization of metal-organic frameworks by transmission electron microscopy

open access: yesAdvances in Physics: X, 2022
To address the increasing energy consumption and serious environmental problems, it is critical to develop efficient and clean energy conversion and storage devices.
Jialin Zhang, Ningyan Cheng, Binghui Ge
doaj   +1 more source

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