Results 101 to 110 of about 646,559 (302)

Methane in the Baltic and North Seas and a reassessment of the marine emissions of methane [PDF]

, 1994
During three measurement campaigns on the Baltic and North Seas, atmospheric and dissolved methane was determined with an automated gas chromatographic system.
Angelis, Angelis, Bates, Belviso, Berger, Bianchi, Brooks, Bullister, Burke, Butler, Charlou, Charlou, Cicerone, Conrad, Crutzen, Cynar, Dlugokencky, Ehhalt, Ehhalt, Ehlin, Erickson, Erickson, Gamo, Gamo, Garratt, H. W. Bange, Heyer, Hovland, Jean-Baptiste, Jones, Jones, Jähne, Karl, Khalil, Khalil, Kullenberg, Lambert, Lammers, Lamontagne, Lamontagne, Li, Lilley, Liss, M. O. Andreae, Macdonald, Menard, Omstedt, Otto, Owens, Prinn, Rasmussen, Reeburgh, S. Rapsomanikis, Scranton, Scranton, Scranton, Scranton, Siedler, Steele, Steele, Swinnerton, Traganza, U. H. Bartell, Vaghjiani, Wanninkhof, Ward, Ward, Ward, Wiesenburg, Williams, Wilson, Woodwell   +71 more
core   +1 more source

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

CFD stimulation of gluconic acid production in a stirred gas-liquid fermenter [PDF]

, 2006
Designing large-scale stirred bioreactors with performance closely matching the one achieved in lab-scale fermenters presents continuous challenge. In this contribution, dynamic modelling of the aerobic biocatalytic conversion process in viscous batch ...
Elqotbi, Mohammed, Montastruc, Ludovic, Nikov, Iordan, Vlaev, S.D.   +3 more
core  

Interaction of MgO Recyclate‐Based Cermet Anode With KF‐AlF3‐Al2O3 at 800°C During Laboratory Scale Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
A carbon‐free, as‐sintered MgO–steel cermet anode, fabricated via cold isostatic pressing using MgO–C refractory recyclate, was evaluated under laboratory‐scale K‐cryolite electrolysis at 800°C. Operation at this reduced temperature, combined with the electrolyte's limited electrical conductivity, led to an increase in cell voltage.
Farhan Hossain, Alexander Adamczyk, Felipe Alejandro Garcia Paz, Serhii Yaroshevskyi, Felix Drechsler, Daniel Vogt, Christos G. Aneziris, Alexandros Charitos   +7 more
wiley   +1 more source

Cell Model of In-cloud Scavenging of Highly Soluble Gases

, 2012
We investigate mass transfer during absorption of highly soluble gases such as HNO_{3}, H_{2}O_{2} by stagnant cloud droplets in the presence of inert admixtures. Thermophysical properties of the gases and liquids are assumed to be constant.
Alexander Baklanov, Andrew Fominykh, Baklanov, Boris Krasovitov, Chaumerliac, Clift, Djikaev, Elperin, Elperin, Elperin, Elperin, Flossmann, Garrett, Happel, Hayden, Komazaki, Levine, Long, Mari, Martin, Pruppacher, Seinfeld, Seinfeld, Sincovec, Tov Elperin, Vesala, Worsnop, Wurzler, Wurzler, Wyser, Zhang   +30 more
core   +1 more source

Interaction of Ladle Slag With Varying SiO2 Content and Recyclate‐Based MgO–C Refractories

Advanced Engineering Materials, EarlyView.
Ladle slags (CaO/Al2O3 = 1) with 1–20 wt% SiO2 were investigated in contact with industrial MgO–C refractories fabricated from fresh magnesia and 50 wt% recyclate. The sessile drop method at 1600°C reveals intensive gas formation, delayed slag infiltration in recyclate‐based samples, and, under high‐SiO2 slag, formation of a dense MgAl2O4‐rich ...
Anton Yehorov, Eldar Salpagarov, Anhelina Mospan, Till Manon Jannis Stadtmüller, Thomas Schemmel, Christos Georgios Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Nitrous oxide and methane in the Atlantic Ocean between 50 degrees North and 52 degrees South: Latitudinal distribution and sea-to-air flux [PDF]

, 2008
We discuss nitrous oxide (N2O) and methane (CH4) distributions in 49 vertical profiles covering the upper 300 m of the water column along two 13,500 km transects between 50°N and 52°S during the Atlantic Meridional Transect (AMT) programme (AMT cruises ...
Forster, Grant, Gist, Niki, Robinson, Carol, Uher, Gunther, Upstill-Goddard, Rob C., Woodward, E. Malcolm S.   +5 more
core   +1 more source

Impact of Sustainable Binders Based on Lignin and Collagen on the Volume Stability and Mechanical Properties of MgO‐C Refractories with MgO‐C Recyclates

Advanced Engineering Materials, EarlyView.
Collagen hydrolysate is evaluated as a sustainable binder for MgO‐C refractories. Its thermally induced cross‐linking and gas release lead to expansion and cracking in large bricks, but tailored batches with lignin, recyclates, or fine graphite improve the gas release while thermal treatment and stability.
Till M. J. Stadtmüller, Florian Kerber, Kirsten Moritz, Steffen Dudczig, Konstantin Kraushaar, Thomas Schemmel, Jana Hubálková, Patrick Gehre, Christos G. Aneziris   +8 more
wiley   +1 more source

Development of Sustainable MgO–C Refractories Using MgO–C Recyclates and a Novel Eco‐Friendly Fructose–Tannin Binder Crosslinked With Citric Acid

Advanced Engineering Materials, EarlyView.
This study develops sustainable MgO–C refractories using recycled materials and eco‐friendly fructose–tannin binders. The enhanced performance of citric acid as a cross‐linker and functional additives on mechanical and thermomechanical properties was examined. Characterization included strength tests, immersion trials, and microstructural and inclusion
Dinesh K. Gunasekar, Jana Hubálková, Steffen Dudczig, Gert Schmidt, Florian Kerber, Thomas Schemmel, Patrick Gehre, Christos G. Aneziris   +7 more
wiley   +1 more source

Dissolved gas analysis: Early fault indication and trend analysis

Transformers Magazine, 2023
A review of the two approaches of dissolved gas analysis – detailed fault diagnosis and trend analysis with fault indication – is given. The advantages and disadvantages of the two approaches under the aspects of measurement uncertainty, economic efficiency and integration into a condition assessment strategy are outlined.
Schübel, Jürgen, Alber (Pollok), Alexander   +1 more
openaire   +1 more source