Abstract: A study for maximizing an index of an array of nonparallel wire antennas under the simultaneous determination of the polarization is carried out. The eigenvalue method is used, and it is ...

We present a tunable two-dimensional class hierarchy indexing technique (2D-CHI) for object-oriented databases. We use a two-dimensional file organization as the index structure. 2D-CHI deals with the ...

A good surface-enhanced Raman spectroscopy (SERS) substrate requires precise control of the enhancement factor in large area which may be achieved with large-scale hot spot engineering. Here, we ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their ...

Updated monthly, the Nature Index presents research outputs by institution and country. ... Solvent-dripping modulated 3D/2D heterostructures for high-performance perovskite solar cells ...

Since version 2.1.7 Swagger Core supports also Jakarta namespace, with a parallel set of artifacts with -jakarta suffix, providing the same functionality as the "standard" javax namespace ones.. While ...

Rational design of highly stable and active metal catalysts requires a deep understanding of metal–support interactions at the atomic scale. Here, ultrathin films of FeO and FeO2–x grown on Pt(111) ...

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