Results 71 to 80 of about 1,813 (204)

Application of a novel schema for describing fossil fern foliage and investigating taxonomic and morphological change across the Cretaceous–Paleogene boundary in western North America

American Journal of Botany, Volume 113, Issue 8, August 2026.
Abstract Premise The Chicxulub asteroid impact at the Cretaceous–Paleogene (K–Pg) boundary triggered a mass extinction 66 million years ago. Ferns thrived in the aftermath of the extinction, evidenced by the well‐documented “fern spore spike.” However, fern macrofossil records across the K–Pg boundary are less understood.
Fern B. Holian, Emily B. Sessa, Richard S. Barclay, Regan E. Dunn, Jacquelyn L. Gill, Kirk R. Johnson, S. Augusta Maccracken, Ian M. Miller, Jarmila Pittermann, Ellen D. Currano   +9 more
wiley   +1 more source

Experimental Study on the Influence of Initial Pressure on Explosion of Methane-coal Dust Mixtures [PDF]

, 2013
Methane-coal dust explosion belongs to chemical explosion which always directly causes fire disasters. When it comes to coal mine, the gas explosion easily leads to extensive burning and forms large area stereo fire finally, due to the big blast power ...
Li, Yuan, Xu, Hongli, Wang, Xishi
core   +1 more source

Birch Rust Spore Exposure and Upper Airway Symptom Dynamics in a Subarctic Region: Indications for a Novel Seasonal Allergen

Clinical and Translational Allergy, Volume 16, Issue 8, August 2026.
ABSTRACT Background Airway allergies affect 20%–30% of the global population, with pollen and fungal spores representing major environmental triggers. Although fungal spores are far more abundant than pollen, their allergenic role—particularly from phytopathogenic rust fungi such as birch rust (BR)—remains poorly understood.
Randi Falnes Olsen, Kristian Svendsen, Thorsten Graf, Annette Kuehn, Viera Stubnova, Martin Sørensen   +5 more
wiley   +1 more source

Effect of particle size of coal dust on explosion pressure

Journal of Measurement Science and Instrumentation, 2019
The effect of the particle size of coal dust on explosion pressure and the rising rate of explosion pressure is studied. Three coal dusts from Lingan Coal Mine in Canada and Datong Coal Mine in China are selected to test.
JIAO Feng-yuan, ZHANG Hua-rong, CAO Wei-guo, FANG Fan   +3 more
doaj  

Research Progress of Explosion Suppression and Isolation Technology of Gas and Coal Dust

Meikuang Anquan, 2020
In this paper, the research progress and development trend of gas and coal dust explosion suppression and isolation technology in China are reviewed and discussed from the aspects of basic research, passive explosion suppression and isolation technology,
SI Rongjun, WANG Lei, JIA Quansheng
doaj   +1 more source

No Place to Hide? Regional Resilience and Vulnerability to Global Catastrophic Risk

Global Challenges, Volume 10, Issue 8, August 2026.
No location on Earth withstands every global catastrophe. This review maps the geographic, institutional and infrastructural factors shaping resilience to nuclear, volcanic and impact winters, infrastructure loss and pandemics. Geographic isolation, food self‐sufficiency, strong governance and decentralization improve resilience across scenarios ...
Florian Ulrich Jehn, Maximilian Rössler, Luke Kemp, Michael Cassidy, Zachary Kallenborn, Juan Bartolomé García Martínez, Lara Mani, Matt Boyd   +7 more
wiley   +1 more source

Material Evidence Analysis upon Accident Investigation of Gas and Coal Dust Explosion [PDF]

, 2012
The gas and coal dust explosion accident is one of the most frequent and serious accidents in China coal mine. Based on explosion characteristics parameters after explosion and the change laws of gas and solid components, the comprehensive criteria of ...
Si, Rongjun, Li, Runzhi, Huang, Zichao
core   +1 more source

A New Approach to Manufacturing Oral Drug Delivery Systems via Selective Laser Sintering With Water‐Insoluble Biocompatible Thermoplastic Polymers: Gaps, Risks, Challenges, and Future Directions

Macromolecular Materials and Engineering, Volume 311, Issue 8, August 2026.
Selective laser sintering enables the fabrication of personalized oral drug delivery systems using biocompatible thermoplastics such as PA12 and polyethylene, offering controlled release and structural precision. However, high‐energy processing introduces safety concerns, including emissions and micro‐ and nanoplastic formation.
Klara Dorożyńska, Ewelina Baran, Przemysław Dorożyński, Grzegorz Formicki, Piotr Kulinowski   +4 more
wiley   +1 more source

Batteries From Reused, Recycled, and Surplus Materials

Advanced Sustainable Systems, Volume 10, Issue 7, July 2026.
Batteries can become more circular by combining reuse, direct recycling, metallurgical recovery, and material sourcing from industrial surplus streams. This Review highlights how recycled and waste‐derived metals, carbons, polymers, electrolytes, and active materials can be reintegrated into current and emerging batteries, while emphasizing design ...
Jing Yu, Irina Martynova, Elsa Briqueleur, Michael Carboni, Pascale Chenevier, Giulia Pezzin, Yuchuan Ren, Malik Dilshad Khan, Zeyan Li, Marja Vilkman, Chamseddine Guizani, Mickael Dolle, Gian Andrea Blengini, Jordi Jacas, Jordi Arbiol, Andreu Cabot, Alessandra Manzini   +16 more
wiley   +1 more source

Seismic Reflection Profiling at the Kentland Impact Structure, Indiana: Geophysical Characterization of Impact Induced Damage

Journal of Geophysical Research: Planets, Volume 131, Issue 7, July 2026.
Abstract The Kentland Impact Structure is a classic complex crater whose central peak is exposed in an active quarry in NW Indiana, USA. However, its diameter has remained poorly constrained due to the thick glacial sediment cover. Newly obtained seismic reflection profile images combined with refraction seismic tomography, earlier gravity surveying ...
Brian A. Robitaille, Douglas R. Schmitt, Christoph Büttner, Jonathan R. Delph, Stefan Buske   +4 more
wiley   +1 more source