Results 91 to 100 of about 139,143 (283)

Study of design parameters of explosive initiators with respect to space environments Final report [PDF]

open access: yes
Environmental hazards to explosives and explosive triggering devices encountered on manned space ...
Amicone, R. G., Mohrbach, P. F.
core   +1 more source

Pennsylvania Under the Gun: 5 Measures of Gun Violence in the Keystone State [PDF]

open access: yes, 2016
This issue brief explores five aspects of gun violence in Pennsylvania that are especially alarming, unusual, or above the national average:1. Pennsylvania's rate of gun homicides is among the highest in the nation, particularly in communities of color.2.
Chelsea Parsons, Eugenio Weigend Vargas
core  

Advanced Flame Retardant Strategies and Fire Performance Assessment for Safer Photovoltaics in Buildings: A Two‐Part Review

open access: yesAdvanced Functional Materials, EarlyView.
The integration of photovoltaic (PV) systems into building structures introduces distinct fire risks with critical implications for occupant safety. This review examines the key fire hazards associated with PV implementation and explores mitigation strategies, including flame‐retardant additives.
Florian Ollagnon   +7 more
wiley   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

America's Gun Shows: Open Markets for Criminals [PDF]

open access: yes, 2009
An estimated 5,000 gun shows are conducted in the United States every year. Federal law mandates that licensed dealers at these events perform background checks on purchasers before completing a sale.

core  

Continuous‐Flow Photocatalytic Degradation of Glyphosate and Aminomethylphosphonic Acid Under Simulated Sunlight with TiO2‐Coated Poly(vinylidene fluoride) Membrane

open access: yesAdvanced Functional Materials, EarlyView.
Glyphosate (GLY) and its primary metabolite, aminomethylphosphonic acid (AMPA), are photodegraded using a poly(vinylidene fluoride) membrane with immobilized titanium dioxide (PVDF‐TiO2) in a continuous flow‐through operation under solar light. At optimized conditions, the PVDF‐TiO2 membrane achieved 95% GLY and 80% AMPA removal with •O2− as the ...
Phuong B. Trinh   +4 more
wiley   +1 more source

Advances in automation and robotics: The state of the emerging future mining industry

open access: yesJournal of Safety and Sustainability
The mining industry is undergoing a transformative evolution driven by novel intelligent technologies to eliminate fatalities within the next two decades. The integration of automation, robotic systems, artificial intelligence (AI), machine learning (ML),
Mabel Obosu, Samuel Frimpong
doaj   +1 more source

Fingerprinting of Nitroaromatic Explosives Realized by Aphen-functionalized Titanium Dioxide

open access: yesSensors, 2019
Developing sensing materials for military explosives and improvised explosive precursors is of great significance to maintaining homeland security.
Guanshun Xie, Bingxin Liu
doaj   +1 more source

Photoswitching Conduction in Framework Materials

open access: yesAdvanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez   +4 more
wiley   +1 more source

Performance evaluation of pyrotechnic articles for maritime use [PDF]

open access: yesMATEC Web of Conferences
This paper presents a performance evaluation of maritime pyrotechnic articles, including hand flares and buoyant smoke signals, subjected to simulated operational stress conditions.
Jitea Ilie-Ciprian   +3 more
doaj   +1 more source

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