Results 71 to 80 of about 930,547 (198)

Mapping Peatlands Combing Deep Learning With Sparse Spectral Unmixing Based on Zhuhai-1 Hyperspectral Images

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The mixed pixel problem, arising from the complex vegetation types of peatlands, poses a significant challenge for remote sensing-based peatland mapping.
Yulin Xu, Xiaodong Na
doaj   +1 more source

A Digital Atlas of Human Ultrastructure

open access: yesSmall, EarlyView.
An interactive resource with ultrastructural data of human organs. Analyse organs from sub‐millimeter up to the nanometer range of macromolecules in a similar way as Google‐earth: https://www.nanotomy.org/OA/HumanAtlas/. ABSTRACT Electron microscopy (EM) is the method to visualize the building blocks of life in organs and tissues at biomolecular ...
Anouk H. G. Wolters   +4 more
wiley   +1 more source

Complex Refractive Index Determination Via Microspectroscopy Through Magnifying Optics: Challenges and Opportunities

open access: yesSmall Methods, EarlyView.
Microspectroscopy combines a standard optical microscope with a spectrometer to measure reflectance and transmittance of samples down to the microscale. A numerical formalism that explicitly accounts for the high numerical aperture of magnifying optics retrieves complex refractive indices.
Julian Schwarz   +3 more
wiley   +1 more source

Iterative spectral unmixing, ISU

open access: yes, 1999
Spectral unmixing techniques strive to find proportions of end-members within a pixel from the observed mixed pixel spectrum and a number of pure end-member spectra of known composition.
van der Meer, F.D., F. Van Der Meer
core   +1 more source

Zero‐shot learning enabled image enhancement in Bessel beam light sheet fluorescence microscopy

open access: yesVIEW, EarlyView.
A physics‐guided, unsupervised deep learning‐based image restoration framework for Bessel beam light sheet fluorescence microscopy that suppresses side‐lobe‐induced artifacts is presented. The proposed zero‐shot approach achieved 2.2‐fold increase in signal‐to‐noise ratio and 89% contrast improvement in mouse kidney tissue images, demonstrating its ...
Yujie Dong   +4 more
wiley   +1 more source

Prognostic Value of FST and Relevance to Immune Infiltration in Head and Neck Squamous Cell Carcinoma

open access: yesWorld Journal of Otorhinolaryngology - Head and Neck Surgery, EarlyView.
ABSTRACT Background Immunotherapy response rates in head and neck squamous cell carcinoma (HNSCC) are limited by multiple factors. Tumor cell‐derived follistatin (FST) has been linked to immunotherapy resistance, but the underlying mechanisms remain poorly understood. This study aimed to investigate the prognostic value of FST and its associations with
Pan Song   +6 more
wiley   +1 more source

Increased anergic B cells and decreased antibody‐secreting cells during romiplostim treatment in patients with immune thrombocytopenia

open access: yesBritish Journal of Haematology, EarlyView.
Summary Patients with immune thrombocytopenia (ITP) exhibit substantial heterogeneity in treatment responses. Approximately 30%–50% of patients maintain remission after discontinuation of thrombopoietin receptor agonists (TPO‐RA), suggesting immunomodulatory effects beyond enhanced thrombopoiesis.
Vivianne S. Nelson   +5 more
wiley   +1 more source

Investigating the influence of hyperspectral data compression on spectral unmixing

open access: yes, 2022
This work addresses the problem of hyperspectral data compression and the evaluation of the reconstruction quality for different compression rates. Data compression is intended to transmit the enormous amount of data created by hyperspectral sensors ...
Middelmann, Wolfgang   +3 more
core   +1 more source

Geochemical and granulometric fingerprints of 8200 years of westerly wind variability in inner‐fjord lake sediments from Svalbard

open access: yesBoreas, EarlyView.
The Arctic is warming faster than any other region on Earth. As sea ice diminishes, the surface boundary conditions, such as roughness and air–sea coupling, change and open‐water fetch increases. This may enhance wind forcing on Arctic coasts. Lake sediments can record these changes through the deposition of wind‐blown grains and elements, offering ...
Zofia Stachowska   +5 more
wiley   +1 more source

Bayesian estimation of linear mixtures using the normal compositional model. Application to hyperspectral imagery [PDF]

open access: yes, 2010
This paper studies a new Bayesian unmixing algorithm for hyperspectral images. Each pixel of the image is modeled as a linear combination of so-called endmembers.
Eches, Olivier   +3 more
core   +1 more source

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