Results 91 to 100 of about 1,123,733 (296)

Visual analytics of flight trajectories for uncovering decision making strategies [PDF]

, 2018
In air traffic management and control, movement data describing actual and planned flights are used for planning, monitoring and post-operation analysis purposes with the goal of increased efficient utilization of air space capacities (in terms of delay ...
Andrienko, G., Andrienko, N., Cordero Garcia, J. M., Fuchs, G., Herranz, R., Marcos, R., Scarlatti, D., Vouros, G. A.   +7 more
core  

EBSD Study of Creep‐Induced Lattice Misorientation in MgO‐Particle‐Reinforced Austenitic Steel Composites

Advanced Engineering Materials, EarlyView.
Creep experiments at 900°C on coarse‐grained steel‐ceramic composites containing recycled magnesia reveal that higher ceramic volume fractions significantly enhance the creep resistance. Detailed EBSD investigations identify subgrain formation in the steel matrix as the dominant deformation mechanism.
Moritz Müller, Amaya Compart, Mahnaz Mehdizadehlima, Serhii Yaroshevskyi, Christos G. Aneziris, Horst Biermann, Anja Weidner   +6 more
wiley   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

Advanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source

Polydimethylsiloxane Substrates for passive UHFRFID Sensors [PDF]

, 2014
PDMS has previously shown to be a suitable substrate for UHF-RFID strain sensor tags due to their elastomer characteristics. However, PDMS has further properties such as polymer swelling which could be utilized in gas sensing.
Batchelor, John C., Holder, Simon J., Rakibet, Osman Özgür, Rumens, C.V.   +3 more
core  

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Landscape fragmentation triggers cascading enhancement of surface ozone production

Communications Earth & Environment
Surface ozone pollution, a major threat to ecosystems and human health, can be exacerbated by interactions between anthropogenic and biogenic emissions. Here we combine field observations with numerical models to reveal a previously unrecognized pathway ...
Jiangyong Li, Hao Wang, Daocheng Gong, Qinqin Li, Yu Wang, Wenlong Zhao, Chunlin Zhang, Zihan Zhou, Yiming Zhao, Qiao Xu, Yan Zhou, Congrong He, Zoran Ristovski, Lidia Morawska, Shaw Chen Liu, Boguang Wang   +15 more
doaj   +1 more source

Oxidative potential apportionment of atmospheric PM₁: a new approach combining high-sensitive online analysers for chemical composition and offline OP measurement technique [PDF]

Atmospheric Chemistry and Physics
Source apportionment models were widely used to successfully assign highly time-resolved aerosol data to specific emissions and/or atmospheric chemical processes.
J. Camman, J. Camman, B. Chazeau, B. Chazeau, N. Marchand, A. Durand, G. Gille, L. Lanzi, J.-L. Jaffrezo, H. Wortham, G. Uzu   +10 more
doaj   +1 more source

The impact of objective and subjective measures of air quality and noise on house prices: a multilevel approach for downtown Madrid [PDF]

Air quality is one of the major concerns in big cities. It is therefore of interest to evaluate properly air pollution. Specifically, this paper aims at measuring how air quality is incorporated in transaction prices in downtown Madrid. For that purpose,
Coro Chasco, Julie Le Gallo
core  

Monitoring and modeling of household air quality related to use of different Cookfuels in Paraguay. [PDF]

, 2019
In Paraguay, 49% of the population depends on biomass (wood and charcoal) for cooking. Residential biomass burning is a major source of fine particulate matter (PM2.5 ) and carbon monoxide (CO) in and around the household environment. In July 2016, cross-
Balmes, John, Galeano, Aida, Hernandez, Maria Teresa, Oyola, Pedro, Pillarisetti, Ajay, Smith, Kirk R, Soares, Agnes, Tagle, Matias, Torres, Ricardo, Troncoso, Karin   +9 more
core   +1 more source

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source