Results 151 to 160 of about 8,307 (281)

Estimating when the Antarctic Ozone Hole will Recover [PDF]

, 2007
The Antarctic ozone hole develops each year and culminates by early spring (late September - early October). The severity of the hole has been assessed from satellites using the minimum total ozone value from the October monthly mean (depth of the hole ...
Douglass, Anne R., Nielsen, J. Eric, Stolarski, Richard S., Newman, Paul A., Nash, Eric R., Pawson, Steven   +5 more
core  

Purification and Properties of Polyvinyl Nitrate and Its Compatibility With Solid Oxidizers

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT Polyvinyl nitrate (PVN) is a nitrate‐ester energetic binder that can be produced directly from polyvinyl alcohol—a cheap commodity feedstock—thereby offering potential cost and supply‐chain advantages over binders based on nitrocellulose and other specialty polymers.
Stephen Spice, Monica C. Chandwani, Carole A. Morrison, Colin R. Pulham   +3 more
wiley   +1 more source

CLIMATOLOGIES OF OZONE AND UV-B IRRADIANCES OVER ANTARCTICA IN THE LAST DECADES

Gayana, 2004
Antarctica is the continent that has suffered the strongest variations in total ozone column and UV-B radiation, during the last decades, as consequence of the "ozone hole". Systematic measurements of total ozone column are being performed since the late
Susana B Diaz, Guillermo Deferrari, Don Nelson, M. Carolina Camilion   +3 more
doaj  

Sustainable Polymer Biocomposites for Food Packaging: Green Nanotechnology, Circular Plastic Upcycling and Smart Functional Materials

Packaging Technology and Science, EarlyView.
Graphical abstract showing the development of biodegradable polymer biocomposites reinforced with natural fibres, green nanoparticles and waste‐plastic upcycling pathways toward sustainable smart food packaging materials ABSTRACT The fundamental hypothesis behind this review is that the combination of biodegradable polymer‐based biocomposites, which ...
Chandra Sekhar Espenti, Jaewoong Lee
wiley   +1 more source

A multimodel intercomparison study of variable‐resolution global models with grid refinement over the Arctic and Antarctic

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We document the protocol and first results from the first ever coordinated multimodel variable‐resolution experiment set with refinement over the polar regions. We find that the refinement generally yields model‐dependent effects. The most consistent improvement is an amelioration of the upper‐level cold bias in the polar regions that translates into ...
Lise Seland Graff, Dörthe Handorf, Raphael Köhler, Xavier Levine, René R. Wijngaard, Gareth J. Marshall, Alexey Yu. Karpechko, Ryan S. Williams, Priscilla A. Mooney   +8 more
wiley   +1 more source

Strategy for One‐Step Optimization of Metal Oxide Passivating Contact Materials for Si Heterojunction Solar Cells through Growth Angle Variation

Small, EarlyView.
A one‐step oblique angle reactive sputtering approach enables simultaneous tuning of bulk and interfacial stoichiometry in a metal oxide/ silicon heterojunction. In case of vanadium oxides, growth angle variation controls the formation of stoichiometric SiO2, ternary SiOx(V) interlayer, and phase purity of vanadium oxide, considerably simplifying the ...
Aparajita Mandal, Alexis Franquet, Hans Hofsäss, Tapobrata Som   +3 more
wiley   +1 more source

Influence of Temperature on the Reliability of Graphene‐Based Ozone Sensors

Small, EarlyView.
The reliability and stability of inkjet‐printed graphene flake sensors are evaluated. Stress assessments take place in ozone‐rich environments and at elevated temperatures, with the observation of a change in resistance. Surface‐sensitive techniques serve to investigate the failure and degradation mechanisms of printed graphene.
Archa Jain, Kathrin Ganzhorn, Aleksandr Baklanov, Tim Schaffus, Werner Breuer, Jasper Ruhkopf, Janio Venturini, Sebastian Troll, Annalisa Cappellani, Max C. Lemme   +9 more
wiley   +1 more source

Improved Charge Transport and Device Performance in p‐i‐n Carbon Electrode Perovskite Solar Cells Using SiC‐APTES Additive

Small, EarlyView.
Modification of carbon electrode by mixing silicon carbide nanoparticles functionalized with 3‐aminopropyltriethoxysilane improves the charge transport and device performance of p‐i‐n perovskite solar cells over 18% along with the decreased hysteresis and extended stability.
Mikhail Pylnev, Ryosuke Nishikubo, Tomoya Nakamura, Ryoji Shimomura, Atsushi Wakamiya, Akinori Saeki   +5 more
wiley   +1 more source

Buried Liquid Metal Interfaces: Oxides and Surface Water‐Driven Hydrogen Bubbles

Small, EarlyView.
When liquid metal (EGaIn) is injected against substrates, its native oxide deposits at the buried interface via a tank‐tread mechanism. On glass (insulating) substrates, liquid metal reacts with surface water to generate hydrogen bubbles, with bubble size and density governed by humidity and surface hydrophilicity.
Sooyoung Kim, Etienne Palleau, Mohammad Rashed Khan, Kunal Mondal, Ju‐Hee So, Michael D. Dickey   +5 more
wiley   +1 more source

Press Hardening for Sustainable Lightweight Chassis Design in Heavy‐Duty Vehicles: A Material Performance and Life Cycle Assessment Approach

steel research international, EarlyView.
The article explores how high‐strength steels and press hardening revolutionize lightweight chassis design for heavy‐duty vehicles. It reveals that press hardened steels combined with shot peening can cut weight by up to 34% and reduce environmental impact by 21%–32%.
Violeta Vargas‐Parra, Sergi Parareda, Jose Jorge Espí‐Gallart, Jaume Pujante, Gustaf Gustafsson, Henrik Sieurin, David Frómeta, Daniel Casellas   +7 more
wiley   +1 more source