Results 81 to 90 of about 7,430 (235)

Observations of counter-streaming ions in and around the diamagnetic cavity of comet 67P

Astronomy & Astrophysics
Context. Ion speeds at comet 67P/Churyumov-Gerasimenko significantly exceed local neutral gas speeds, a discrepancy that challenges current ion-neutral coupling models.
Yun X.-T., Stenberg Wieser G., Nilsson H., Bergman S., Fu S., Ni B.   +5 more
doaj   +1 more source

The Role of Interfacial Energetics and Defects on The Efficiency of Tin Perovskite Solar Cells

Small, EarlyView.
ABSTRACT Tin perovskites are emerging as a sustainable alternative to lead‐based photovoltaics, yet their efficiency remains limited by energy‐level mismatch and intrinsic instability from tin oxidation. Progress is further hindered by inconsistent electrical behavior, obscuring the true bottlenecks of device performance.
Mahmoud H. Aldamasy, Artem Musiienko, Marin Rusu, Davide Regaldo, Zafar Iqbal, Shengnan Zuo, Hannes Hampel, Chiara Frasca, Ahmed G. Bedir, Guixiang Li, Giuseppe Nasti, Meng Li, Jorge Pascual, Qiong Wang, Thomas Unold, Antonio Abate   +15 more
wiley   +1 more source

Optimization of Fluorescent Nanoparticles Architecture for Efficient Brightness, FRET Efficiency and Biosensing

Small Methods, EarlyView.
Architecturally controlled fluorescent polymer nanoparticles spatially confine BODIPY dyes within core‐shell‐crown compartments, enabling independent tuning of brightness and FRET efficiency. Core‐localized dyes maximize brightness, while shell positioning enhances energy transfer.
Dalel El Marrouki, Clara Catros, Julien Sanchez, Paul Marque, Chloé Grazon   +4 more
wiley   +1 more source

Search for the True Parent Body of the Phoenicid Meteor Shower

The Astronomical Journal
In 2024, Ďurišová et al. found that the meteor shower Phoenicids, IAU No. 254, code PHO, can originate in the nuclei of three comets, 46P/Wirtanen, 104P/Kowal 2, and 289P/Blanpain.
Martina Kováčová, Luboš Neslušan, Dušan Tomko   +2 more
doaj   +1 more source

Aligning Real‐Time Recurrence Computational Fluid Dynamics Simulations with Plant Data for the Ruhrstahl–Heraeus Degassing Process of Steel

steel research international, EarlyView.
Uncertainties exist in computational fluid dynamics (CFD) modeling of complex metallurgical processes, even when partly validated by laboratory experiments. rCFD enables computationally efficient prediction of long‐term RH degassing and can be adapted to vary flow conditions.
Xiaomeng Zhang, Maria Thumfart, Roman Rössler, Stefan Pirker   +3 more
wiley   +1 more source

COSINE (Cometary Object Study Investigating Their Nature and Evolution). I. Project Overview and General Characteristics of Detected Comets

The Astrophysical Journal Supplement Series
We present the first results from the Cometary Object Study Investigating their Nature and Evolution (COSINE) project, based on a uniformly processed data set of 484 comets observed over the full 15 yr duration of the Wide-field Infrared Survey Explorer (
Yuna G. Kwon, Dar W. Dahlen, Joseph R. Masiero, James M. Bauer, Yanga R. Fernández, Adeline Gicquel, Yoonyoung Kim, Jana Pittichová, Frank Masci, Roc M. Cutri, Amy K. Mainzer   +10 more
doaj   +1 more source

Solar Sail Optimal Performance in Heliocentric Nodal Flyby Missions

Aerospace
Solar sails are propellantless propulsion systems that extract momentum from solar radiation pressure. They consist of a large ultrathin membrane, typically aluminized, that reflects incident photons from the Sun to generate thrust for space navigation ...
Giovanni Mengali, Marco Bassetto, Alessandro A. Quarta   +2 more
doaj   +1 more source

Model‐Based Systems Engineering in Space Applications: A Comprehensive Literature Review

Systems Engineering, EarlyView.
ABSTRACT The growing complexity of space engineering is driving the demand to embrace the adoption of Model‐Based Systems Engineering (MBSE). Although the MBSE is well‐practiced in the space industry, the level of effort and need required to obtain the benefits of MBSE vastly differ across enterprises; this disparity presents a significant challenge to
Rehobot Bekele Buruso, Sara Himmiche, Taiwo Tejumola, Yeshirun Alemayehu, Bertrand Rose   +4 more
wiley   +1 more source

Untreated Hair Dye Effluents Enter the Environment: Are They a Threat to Human Health?

Environmental Toxicology, EarlyView.
ABSTRACT The effluents generated during the process of hair dyeing exhibit a complex composition, comprising chemical compounds with varying toxicity levels. While the adverse impact of hair dyes on human health is acknowledged, there is a notable absence of studies addressing the toxicity associated with effluents produced during these activities. The
Letícia Cristina Gonçalves, Matheus Mantuanelli Roberto, Adriana Fabiana Corrêa da Silva, Maria Aparecida Marin‐Morales   +3 more
wiley   +1 more source

Cytogenotoxic Effects of Fluopyram in Allium cepa Root Cells Involving Microtubule Disruption

Environmental Toxicology, EarlyView.
ABSTRACT Fluopyram is a next‐generation fungicide widely used in agriculture; however, its persistence in soils and mobility toward aquatic systems have raised concerns regarding potential ecotoxicological risks. This study evaluated the cytogenotoxic effects of a commercial fluopyram‐based pesticide formulation on Allium cepa root meristem cells ...
Carlos Filipe Camilo‐Cotrim, Natanael Alves da Silva, Gabriela Gomes Lima, Igor Rodrigues Vasconcelos, Luciana Souza Ondei, Elisa Flávia Luiz Cardoso Bailão, Antônio Sérgio Nakao de Aguiar, Marcelino Benvindo‐Souza, Leonardo Luiz Borges, Virgínia Damin, Luciane Madureira Almeida   +10 more
wiley   +1 more source