Results 81 to 90 of about 470,881 (224)

Autonomous Charging and Battery Swapping for Unmanned Aerial Vehicles: A Review

open access: yesAdvanced Intelligent Systems, EarlyView.
This review evaluates major autonomous charging and battery swapping methods for unmanned aerial vehicles (UAVs) against a single question: how close each is to sustained unattended operation. Rather than ranking them by charging performance, it identifies the limitation that most restricts each method, and briefly outlines the supporting technologies ...
Zelin Wu   +5 more
wiley   +1 more source

Cohesion Without Consensus: Attitudinal Profiles of Social Cohesion in Australia

open access: yesAustralian Journal of Social Issues, EarlyView.
ABSTRACT Headline indicators of social cohesion in Australia have remained stable in recent years despite rising political polarisation and declining institutional trust worldwide. Yet recent protests and incidents of ethnically and politically motivated violence suggest that cohesion may be under strain. If cohesion is understood not as the pursuit of
John van Kooy
wiley   +1 more source

Synergistic Regulation of Defect Density and Electronic Structure in Zr‐Metal‐Organic Frameworks via Selective Ligand Pyrolysis for Efficient Photocatalytic Biomass Conversion

open access: yesCarbon Energy, EarlyView.
This work synergistically regulates the electronic structure, active sites, and carrier dynamics of MOFs through defect engineering, providing a new paradigm for designing high‐efficiency photocatalysts for liquid biomass conversion and promoting the development of sustainable biofuel technologies.
Lin Ban   +6 more
wiley   +1 more source

Antiferroelectric Phase Transitions Under Electric Fields: A Review of Physics and Applications

open access: yesInterdisciplinary Materials, EarlyView.
Field‐induced phase transitions in antiferroelectric materials, driven by electric field, temperature, or stress, enable diverse applications including energy storage, electrocaloric cooling, and negative capacitance. These transitions are regulated through compositional design, strain engineering, heterostructure, and size effect, providing a unified ...
Dingxin Wang   +7 more
wiley   +1 more source

Point-top Shaped Photonic Crystal Fiber for Enhanced Surface Plasmon Resonance Biosensing

open access: yesJournal of Optoelectronical Nanostructures
A point-top photonic crystal fiber (PCF)–based surface plasmon resonance (SPR) biosensor with a continuous gold coating is theoretically proposed and analyzed using the finite-element method.
Alireza Abdikian   +2 more
doaj  

NTECARS: A Nonthermal Equilibrium CARS Spectra Fitting Code

open access: yesJournal of Raman Spectroscopy, EarlyView.
We present NTECARS, an open‐source code written in Julia for the calculation and fitting of CARS spectra under nonequilibrium conditions. Rovibrational distributions can be flexibly modeled and fitted for different use cases. The code currently implements CO2$$ \mathrm{C}{\mathrm{O}}_2 $$ and N2$$ {\mathrm{N}}_2 $$ molecules and is validated under ...
Christian A. Busch, Uwe Czarnetzki
wiley   +1 more source

Qualitative Analysis of Biogas by Raman Spectroscopy: Effect of Pressure on Major Components

open access: yesJournal of Raman Spectroscopy, EarlyView.
Raman spectra of major and selected minor biogas components were studied under pressures up to 100 bar. Pressure‐induced shifts and band broadening were quantified for methane, carbon dioxide, and nitrogen, while Raman spectra of ammonia and hydrogen sulfide are presented in the context of biogas quality monitoring.
Dominik Tománek   +2 more
wiley   +1 more source

Polynomial Poisson algebras: Gel'fand-Kirillov problem and Poisson spectra [PDF]

open access: yes, 2014
We study the fields of fractions and the Poisson spectra of polynomial Poisson algebras. First we investigate a Poisson birational equivalence problem for polynomial Poisson algebras over a field of arbitrary characteristic.
Lecoutre, César
core  

Flow cytometric phytoplankton concentration and optical properties across instruments and laboratories

open access: yesLimnology and Oceanography: Methods, EarlyView.
Abstract Flow cytometry measures the optical properties of individual cells and has become essential for enumerating and characterizing marine phytoplankton. Yet systematic comparison of measurements across instruments remains limited, hampering data comparison across laboratories and long‐term time series.
Francois Ribalet   +10 more
wiley   +1 more source

Calibration‐Free Single‐Frame Super‐Resolution Fluorescence Microscopy

open access: yesLaser &Photonics Reviews, EarlyView.
A deep learning framework reconstructs super‐resolved fluorescence images from a single dense camera frame, without any prior calibration or knowledge of the microscope. Trained solely on synthetic data, it generalizes across imaging setups and conditions.
Anežka Dostálová   +3 more
wiley   +1 more source

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