Results 121 to 130 of about 1,581,476 (369)

Embedding Monodisperse LaOx Into Pt Nanoclusters for Ultra‐Stable and Efficient Hydrogen Isotope Oxidation

open access: yesAdvanced Science, EarlyView.
The introduction of isolated LaOx species into Pt nanoclusters confined within the silicalite‐1 zeolite significantly enhanced the oxidative removal of hydrogen isotopes. Under reaction conditions of 50 °C and GHSV of 72,000 mL·g−1·h−1, the catalyst achieved an excellent H2 conversion efficiency of over 99%.
Guilin Wei   +8 more
wiley   +1 more source

Fatigue failure of metal components as a factor in civil aircraft accidents [PDF]

open access: yes
A review of records maintained by the National Transportation Safety Board showed that 16,054 civil aviation accidents occurred in the United States during the 3-year period ending December 31, 1969.
Holshouser, W. L., Mayner, R. D.
core   +1 more source

Investigating the Effect of Safety Training on the Safety Climate of Employees Working in Kermanshah Province, Iran Oil Refining Company

open access: yesHealth in Emergencies & Disasters Quarterly, 2020
Background: To achieve a safe and healthy environment for human beings and the dynamic industry as a critical factor in sustainable development, it is necessary to deal with accidents and eliminate their underlying causes radically.
Mohammad Reza Omidi   +2 more
doaj  

A Novel Cranial Bone Transport Technique Repairs Skull Defect and Minimizes Brain Injury Outcome in Traumatic Brain Injury Rats

open access: yesAdvanced Science, EarlyView.
This study introduces a novel, safe, and effective surgical technique: Cranial bone transport (CBT) to improve traumatic brain injury (TBI) outcomes in rats. CBT significantly accelerated skull defect bone repair in addition to its promoting effects on neurological function recovery. This work provides an alternative therapy for patients suffering from
Shanshan Bai   +20 more
wiley   +1 more source

Optimizing Polymer Composites for Effective Electromagnetic Shielding: The Role of Carbon Filler Properties and Temperature

open access: yesAdvanced Electronic Materials, EarlyView.
Polymer composites electromagnetic properties are promising for shielding applications. This study explores how filler geometry, orientation, and temperature impact shielding performance. Spherical carbon black enhances scattering, while anisotropic carbon nanotubes (CNTs) show directional wave propagation. CNT orientation critically affects efficiency,
Lijun Huang   +8 more
wiley   +1 more source

An analysis of aircraft accidents involving fires [PDF]

open access: yes
All U. S. Air Carrier accidents between 1963 and 1974 were studied to assess the extent of total personnel and aircraft damage which occurred in accidents and in accidents involving fire.
Lucha, G. V.   +2 more
core   +1 more source

Wearable Image‐Based Colorimetric Sensor for Real‐Time Gas Detection with High Chromaticity

open access: yesAdvanced Electronic Materials, EarlyView.
Flexible colorimetric gas sensing offers energy‐free operation, intuitive feedback, and stability against environmental changes. This study presents a resonator‐based sensor integrated with polyvinyl alcohol (PVA) on a flexible substrate, achieving nearly full RGB coverage and angular robustness up to 60°.
Ji‐Eun Yeo   +3 more
wiley   +1 more source

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