Results 81 to 90 of about 120,634 (290)

Development of data processing, interpretation and analysis system for the remote sensing of trace atmospheric gas species [PDF]

The major emphasis is on the advancement of remote sensing technology. In particular, the gas filter correlation radiometer (GFCR) technique was applied to the measurement of trace gas species, such as carbon monoxide (CO), from airborne and Earth ...
Casas, Joseph C., Kindle, Earl C., Saylor, Mary S.   +2 more
core   +1 more source

Science payload [PDF]

, 1974
The representative science payload of an outer planet atmospheric entry probe is described. The instrumental details are based on experiments that have been successfully flown in the atmospheres of Earth and Venus.
Myers, H.
core   +1 more source

Airborne chemical sensing with mobile robots [PDF]

, 2006
Airborne chemical sensing with mobile robots has been an active research areasince the beginning of the 1990s. This article presents a review of research work in this field,including gas distribution mapping, trail guidance, and the different subtasks of
Achim Lilienthal, Albert, Amy Loutfi, Arshak, Atema, Blumenthal, Braitenberg, Carey, Deveza, Dickinson, Duda, Eiben, Engelberger, Gardner, Gardner, Hangartner, Haug, Hayes, Hayes, Hinze, Ishida, Ishida, Ishida, Ishida, Ishida, Ishida, Ishida, Ishida, Ishida, Ishida, Kaneyasu, Kanzaki, Kanzaki, Kleperis, Kolb, Kreutz, Kuwana, Larionova, Lilienthal, Lilienthal, Lilienthal, Loutfi, Loutfi, Martinez, Moncrieff, Munoz, Murlis, Nagle, Nakamoto, Nakamoto, Olafsson, Organisation, Partridge, Parzen, Pearce, Penza, Persaud, Pluijm, Pyk, Raub, Rechenberg, Roberts, Russell, Russell, Russell, Russell, Russell, Sauerbrey, Schaller, Schwefel, Smyth, Sudd, Tom Duckett, Townsend, Wilkens, Winquist   +75 more
core   +4 more sources

Al–Cu Composite Casting of Laser‐Deoxidized Copper: Bonding, Interfacial Chemistry, and Thermal Conductivity

Advanced Engineering Materials, EarlyView.
This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff, Finn‐Lennard Janthur, Sascha Zimmermann, Sarah Seffer, Jörg Hermsdorf, René Gustus, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Christian Klose   +9 more
wiley   +1 more source

Dynamic Testing of Cold Gas Sprayed Bipolar Plates–Porous Transport Layer Coating System in Proton Exchange Membrane Water Electrolysis

Advanced Engineering Materials, EarlyView.
Through direct application of porous transport layer (PTL) on the bipolar plate (BPP) with thermal spraying, the interfacial contact resistance is improved. With the cold gas sprayed BPP–PTL coating system, a proton exchange membrane water electrolysis cell with a cell voltage of Ucell = 1.9 V can be operated up to i = 2.5 A/cm2 in a dynamic mode ...
Kirsten Bobzin, Marvin Erck, Kevin Jasutyn, Katja Radermacher, Andreas Bund, Mario Kurniawan   +5 more
wiley   +1 more source

Pulse-driven MEMS gas sensor combined with machine learning for selective gas identification

Microsystems & Nanoengineering
The sensing and identification of trace gases are essential for ensuring chemical safety and protecting human health. This study introduces a low-power electronic nose system that utilizes a single sensor driven by repeated pulsed power inputs, offering ...
Wenxin Luo, Fa Dai, Yijun Liu, Xin Wang, Mingjie Li   +4 more
doaj   +1 more source

Study and Characterization of Silicon Nitride Optical Waveguide Coupling with a Quartz Tuning Fork for the Development of Integrated Sensing Platforms

Sensors
This work demonstrates an ultra-compact optical gas-sensing system, consisting of a pigtailed laser diode emitting at 1392.5 nm for water vapor (H2O) detection, a silicon nitride (Si3N4) optical waveguide to guide the laser light, and a custom-designed ...
Luigi Melchiorre, Ajmal Thottoli, Artem S. Vorobev, Giansergio Menduni, Angelo Sampaolo, Giovanni Magno, Liam O’Faolain, Vincenzo Spagnolo   +7 more
doaj   +1 more source

Ecological research in the Large Scale Biosphere Atmosphere Experiment in Amazonia: A discussion of early results [PDF]

, 2004
The Large-scale Biosphere–Atmosphere Experiment in Amazonia (LBA) is a multinational, interdisciplinary research program led by Brazil. Ecological studies in LBA focus on how tropical forest conversion, regrowth, and selective logging influence carbon ...
Alencar, Ane, Asner, Gregory P, Braswell, Rob, Bustmante, Mercedes, da Rocha, Humberto, Davidson, Eric A, Dias, Pedro Silva, Feldpausch, Ted, Fernandes, Erick, Filho, Nicolau Priante, Goulden, M L, Kabat, Paval, Keller, Michael M, Kruijt, Bart, Luizao, Flavio, Markewitz, Daniel, Miller, Scott, Nobre, Antonio D, Nobre, Carlos, von Randow, Celso, Vourlitis, George   +20 more
core   +1 more source

Corrosion and Process Analysis of a Preoxidized MgO Recyclate‐Based Cermet Anode in Laboratory‐Scale Na‐Cryolite Molten Salt Electrolysis of Aluminum at 1000°C

Advanced Engineering Materials, EarlyView.
EDX elemental map of the pre‐oxidized MgO–steel cermet anode cross section after electrolysis. The development of inert anodes for aluminum electrolysis remains challenging due to the high corrosivity of cryolite‐based melts at 950°C–1000°C. This study investigates the corrosion and process behavior of a carbon‐free MgO–steel cermet anode derived from ...
Alexander Adamczyk, Farhan Hossain, Felipe A. Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

Cavity-enhanced light-induced thermoelastic spectroscopy for trace-gas sensing

Optics Express
We report a trace gas sensing technique of cavity-enhanced light-induced thermoelastic spectroscopy (CE-LITES) with a Fabry–Pérot (F-P) optical cavity and a high-quality-factor resonant quartz tuning fork (QTF). Pound-Drever-Hall (PDH) locking method is used to lock the laser to the optical cavity. With only a short 9-cm optical cavity (finesse, ∼1283)
Dongqing Zhang, Hui Zhang, Hongqiang Fan, Mengpeng Hu, Haoran Wang, Junfeng Zhou, Jinguang Lv, Jingqiu Liang, Qiang Wang   +8 more
openaire   +2 more sources