Cross-validation on a population of 35 patients from three different imaging sites with WMLs of varying sizes, shapes, and locations tests the robustness and accuracy of the proposed segmentation method, compared with the manual segmentation results from two experienced neuroradiologists.
Two-dimensional material
indium selenide (InSe) has offered a new
platform for fundamental research in virtue of its emerging fascinating
properties. Unlike 2H-phase transition-metal dichalcogenides (TMDs),
ε phase InSe with a hexagonal unit cell possesses broken inversion
symmetry in all the layer numbers, and predicted to have a strong
second harmonic generation (SHG) effect. In this work, we find that
the as-prepared pure InSe, alloyed InSe1–x
Te
x
and InSe1–x
S
x
(x = 0.1 and 0.2) are ε phase structures and exhibit excellent
SHG performance from few-layer to bulk-like dimension. This high SHG
efficiency is attributed to the noncentrosymmetric crystal structure
of the ε-InSe system, which has been clearly verified by aberration-corrected
scanning transmission electron microscopy (STEM) images. The experimental
results show that the SHG intensities from multilayer pure ε-InSe
and alloyed InSe0.9Te0.1 and InSe1–x
S
x
(x = 0.1 and 0.2) are around 1–2 orders of magnitude higher
than that of the monolayer TMD systems and even superior to that of
GaSe with the same thickness. The estimated nonlinear susceptibility
χ(2) of ε-InSe is larger than that of ε-GaSe
and monolayer TMDs. Our study provides first-hand information about
the phase identification of ε-InSe and indicates an excellent
candidate for nonlinear optical (NLO) applications as well as the
possibility of engineering SHG response by alloying.
Conjugated equine estrogen-based hormone therapy was not associated with a significant increase in ischemic brain lesion volume relative to placebo. This finding was consistent within each trial and in pooled analyses across trials.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.