Results 71 to 80 of about 10,987,903 (131)

Contactless Detection of Giant Helicity‐Dependent Photovoltage in Chiral 2D Perovskites

open access: yesSmall, Volume 22, Issue 54, 25 September 2026.
A novel contactless probe—circularly polarized time‐resolved surface photovoltage spectroscopy is demonstrated to evaluate helicity‐dependent charge separation dynamics without the need for electrical contacts. Application of this novel methodology to chiral 2D perovskites reveals giant transient surface photovoltage anisotropy.
Joanna Dehnel   +4 more
wiley   +1 more source

An Updated Checklist and Narrative Review of Helminth Parasites of Terrestrial and Semiaquatic Carnivorous Mammals in Uzbekistan

open access: yesVeterinary Medicine and Science, Volume 12, Issue 5, September 2026.
This updated checklist synthesizes 120 publications from 1926 to 2024 and documents 74 helminth species in 15 terrestrial and semiaquatic carnivorous mammals of Uzbekistan. The fauna comprises 36 nematodes, 24 cestodes, 9 trematodes and 5 acanthocephalans. Thirty‐seven species have zoonotic relevance.
Alisher Safarov   +3 more
wiley   +1 more source

A Metric for Quantifying Spatial Heterogeneity in Gridded Atmospheric Fields

open access: yesEarth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Spatial heterogeneity influences many nonlinear atmospheric processes but it is often described qualitatively or with simple statistical measures that do not capture spatial organization. We introduce a mixing‐oriented metric for gridded fields based on the expected deviation of subdomain means from the global average.
M. Mohebalhojeh   +3 more
wiley   +1 more source

ESTIMASI PARAMETER PADA STANDARD CAPM (CAPITAL ASSETS PRICING MODEL) DENGAN METODE GMM (GENERALIZED METHOD OF MOMENTS)

open access: yes, 2014
Tujuan utama dari analisis regresi adalah menduga parameter yang tidak diketahui dalam model. Tiga metode estimasi populer yang banyak digunakan adalah kuadrat terkecil (Least-Squares) dan likelihood maksimum (Maximumum Likelihood) dan metode momen ...
ESTIMASI PARAMETER PADA STANDARD CAPM (CAPITAL ASSETS PRICING MODEL) DENGAN METODE GMM (GENERALIZED METHOD OF MOMENTS)
core  

The Concept of the Mixing Index

open access: yesWater Resources Research, Volume 62, Issue 9, September 2026.
Abstract Many current measures of mixing, such as the statistics of concentration, the scalar dissipation rate, or dilution index, are based on the dilution of a single component or pseudo‐component. Because of this, they miss the influence of numerous conditions that directly change true mixing, such as initial separation of chemically distinct water ...
David A. Benson   +2 more
wiley   +1 more source

Re‐Evaluating the Thermogenic Decarbonation During Large Igneous Provinces Emplacement Using Temperature‐Dependent Thermal Properties

open access: yesGeochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.
Abstract Large Igneous Provinces emplacement drives mass extinctions through rapid carbon release, but the relative contributions of magmatic degassing versus thermogenic decarbonation remain debated. Here, we incorporate temperature‐dependent thermal parameters into models of contact metamorphism around intruding sills.
Yan Wang   +3 more
wiley   +1 more source

Scientific Method

open access: yes, 2008
Many think the scientific method is a complicated formula used only by those with a degree in chemistry. In reality, the scientific method is a system of reasoning which can be used to solve almost any type of problem.

core  

Wavefront sensing at a high‐repetition‐rate X‐ray free‐electron laser

open access: yesJournal of Synchrotron Radiation, Volume 33, Issue 5, Page 1255-1268, September 2026.
We demonstrate a fast, robust and sensor‐free approach to X‐ray speckle tracking that enables shot‐to‐shot wavefront characterization at high‐repetition‐rate X‐ray free‐electron lasers. Our measurements reveal a hierarchy of wavefront fluctuations indicative of instabilities in the accelerator and beamline optics at the European XFEL.Wavefront ...
Trey Guest   +18 more
wiley   +1 more source

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