Results 141 to 150 of about 1,615,368 (250)

Models of DG‐Carbon Bands in Raman Spectra: Effects of Basis Functions and Initial Values on the Uniqueness and S/N of Fits Obtained for Atmospheric Aerosol Using Automated Methods

open access: yesJournal of Raman Spectroscopy, Volume 57, Issue 11, Page 1840-1864, November 2026.
Raman spectra containing D/G features are fit using combinations of basis functions and initial conditions. Fits with two Lorentzian functions converged to a single optimized fit even with variation of initial peak positions. For five‐band fits, sometimes the final fit varied with initial conditions, and constraints on peak center position were ...
David C. Doughty, Steven C. Hill
wiley   +1 more source

Hyperspectral Remote Sensing for Phenotyping the Physiological Drought Response of Common and Tepary Bean. [PDF]

open access: yesPlant Phenomics, 2023
Wong CY   +7 more
europepmc   +1 more source

Benefits of hyperspectral remote sensing for tracking plant invasions [PDF]

open access: yes, 2014
Biological invasions are viewed as a significant component of global change and have become a serious threat to natural ecosystems. Concerns for the implications and consequences of successful invasions have stimulated a considerable amount of research ...
Neteler, Markus Georg   +3 more
core  

Optimizing Soil Organic Matter Estimation Through Multi‐Factor Zoning and Tree‐Based Automated Learning

open access: yesLand Degradation &Development, Volume 37, Issue 17, Page 12516-12535, November 2026.
ABSTRACT Soil organic matter (SOM) is a key indicator of land degradation and soil functioning. It plays an essential role in nutrient cycling, soil structure, and long‐term agroecosystem resilience. The variations of surface cover, soil moisture and soil texture heterogeneity will affect the accuracy of SOM remote sensing mapping. This study developed
Xuzhou Qu   +8 more
wiley   +1 more source

HoloSpec: Dispersion‐Based 4D Computational Holographic Hyperspectral Imaging

open access: yesLaser &Photonics Reviews, Volume 20, Issue 21, 6 November 2026.
HoloSpec, a compact dispersion‐based computational holographic system, achieves four‐dimensional imaging by retrieving 3D spatial structure and high‐resolution spectra from only two monochromatic snapshots. Using a single prism and a monochrome sensor, it resolves 430 spectral channels with 3 nm experimental resolution and 30 μm$\mathrm{\mu}\mathrm{m}$
Jingyan Chen   +3 more
wiley   +1 more source

Quantifying soil ammonium and nitrite via soil gas emissions

open access: yesSoil Science Society of America Journal, Volume 90, Issue 6, November/December 2026.
Abstract Monitoring the soil mineral nitrogen (SMN) status of cropland is challenging due to large spatiotemporal variability. Here, we present a novel approach that correlates NH3, NO, and HONO emissions with SMN content, pH, and soil moisture, eliminating the need for destructive soil sampling. We conducted incubation experiments with five soils with
Matthias Claß, Nicolas Brüggemann
wiley   +1 more source

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