Results 71 to 80 of about 120,634 (290)

Planning, implementation, and first results of the Tropical Composition, Cloud and Climate Coupling Experiment (TC4) [PDF]

, 2010
The Tropical Composition, Cloud and Climate Coupling Experiment (TC4), was based in Costa Rica and Panama during July and August 2007. The NASA ER-2, DC-8, and WB-57F aircraft flew 26 science flights during TC4.
Colarco, Peter R., Craig, Michael S., Jensen, Eric J., Jucks, Kenneth W., Kawa, Stephan R., Kurylo, Michael J., Mace, Gerald G., Maring, Hal, Minnis, Patrick, Newman, Paul A., Pfister, Lenny, Pickering, Kenneth E., Platnick, Steven, Rosenlof, Karen H., Schoeberl, Mark R., Selkirk, Henry B., Starr, David O., Toon, Owen B., Vasques, Marilyn F., Wennberg, Paul O., Wofsy, Steven C.   +20 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Development of dynamic gas generation system for ultratrace amounts of acetone at parts-per-trillion levels with low temperature permeation method

Discover Applied Sciences
Different types of gas sensing devices have been developed to monitor trace amounts of volatile compounds emitted from exhalation, human skin, building materials, and atmospheric chemical reactions, etc.. In particular, the recent progress in transdermal
Reiji Aoyagi, Takahiro Arakawa, Kenta Iitani, Kohji Mitsubayashi, Yoshika Sekine, Yuichiro Kaifuku   +5 more
doaj   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

A method to detect baseline emission and plant damage induced volatile emission in a greenhouse [PDF]

, 2008
The objective of this research was to ascertain if 1) baseline emission and 2) damage induced emission of volatile plant substances could be detected under greenhouse conditions.
Bouwmeester, H.J., Henten, E., van, Hofstee, J.W., Jansen, R., Posthumus, M., Verstappen, F.W.A.   +5 more
core   +2 more sources

Characterization of a Recyclate‐Based MgO‐Steel Composite As‐Sintered Inert Anode Candidate After Exposure to Cryolite Electrolysis

Advanced Engineering Materials, EarlyView.
Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi, Alexander Adamczyk, Nora Brachhold, Gert Schmidt, Jana Hubálková, R. Gumeniuk, Alexandros Charitos, Christos G. Aneziris   +7 more
wiley   +1 more source

Removing Oxide Layers and Retaining Oxide‐Free Steel Surfaces by Polishing in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this study, the efficacy of wet mechanical polishing under an oxygen‐free atmosphere for deoxidation and the retention of an oxide‐free steel surface are elucidated using X‐ray photoelectron spectroscopy. The methodology proved successful; however, the results were highly dependent on the preparation of the solvents used to clean the samples after ...
Friedrich Bürger, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +2 more
wiley   +1 more source

Fabrication of highly sensitive room temperature operated NO2 gas sensor using back gated 2D-MoS2 FETs

Chemical Physics Impact
Atomically thin layered semiconductors such as Molybdenum Sulphide (MoS2) have emerged as potential candidate for trace level detection of chemicals owing to their innate very high surface to volume ratio.
Sujit Kumar, Anjali Sharma, Ajay K. Sao, Jatinder Pal Singh, Arijit Chowdhuri, Monika Tomar   +5 more
doaj   +1 more source

A 1.82 m^2 ring laser gyroscope for nano-rotational motion sensing

, 2011
We present a fully active-controlled He-Ne ring laser gyroscope, operating in square cavity 1.35 m in side. The apparatus is designed to provide a very low mechanical and thermal drift of the ring cavity geometry and is conceived to be operative in two ...
A. Di Virgilio, A. Ortolan, A. Rossi, A. Virgilio Di, A. Virgilio Di, E. Maccioni, F. Acernese, F. Aronowitz, F. Bosi, F. Stefani, G. Carelli, G.E. Stedman, G.E. Stedman, G.E. Stedman, J. Belfi, J. Belfi, K.U. Schreiber, K.U. Schreiber, K.U. Schreiber, K.U. Schreiber, K.U. Schreiber, N. Beverini, R. Rodloff, R.B. Hurst, T.M. Niebauer, U. Schreiber, U.K. Schreiber, W.Z. Zhao   +27 more
core   +1 more source

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

Advanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert, Matheus Roberto Bellé, Florian Kerber, Dinesh Kumar Gunasekar, Hans‐Jörn Weddige, Christos G. Aneziris, Olena Volkova   +6 more
wiley   +1 more source