Results 221 to 230 of about 387,449 (281)

On algebraic number fields with even class numbers.

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 1971
openaire   +1 more source

Research on Ultra‐Wideband Pulse Current Method for DC Partial Discharge Measurement

open access: yesHigh Voltage, EarlyView.
ABSTRACT The conventional pulse current method is commonly used in AC or DC withstand voltage tests with partial discharge (PD) monitoring. Because of its relatively narrow measurement bandwidth, this method tends to ignore critical information in PD waveforms, making it difficult to eliminate pulse‐type interference under DC voltage conditions, where ...
Kaining Hou   +4 more
wiley   +1 more source

Maximum persistent Betti numbers of Čech complexes. [PDF]

open access: yesJ Appl Comput Topol
Edelsbrunner H, Kahle M, Kanazawa S.
europepmc   +1 more source

Quantitative analysis of light‐induced ion segregation in mixed‐halide perovskites

open access: yesJournal of Applied Crystallography, EarlyView.
A quantitative X‐ray diffraction approach is introduced to resolve light‐induced halide segregation in mixed‐halide perovskite thin films, revealing the formation of Br‐rich regions and their slow incomplete relaxation in the dark.Mixed‐halide perovskites (MHPs) offer good band‐gap tunability via stoichiometry changes, and such tunability is an ...
Petr Machovec   +6 more
wiley   +1 more source

Application of Fourier-Galois Spectra Analysers for Rotating Image Analysis. [PDF]

open access: yesPolymers (Basel)
Shaltykova D   +4 more
europepmc   +1 more source

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