Zobrazeno 1 - 10
of 159
pro vyhledávání: '"John Liesegang"'
Autor:
Charles S. Fadley, Warren E. Pickett, John Liesegang, F.Javier. Palomares, Zahid Hussain, R. Denecke, R. X. Ynzunza, Jonder Morais, Alexander B. Shick, E. D. Tober
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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The magnetic phase transitions for Gd(0 0 0 1) grown on W(1 1 0) - a bulk transition at 293 K and a surface transition about 85 K above this - are found to influence the energy separation of the Gd 5s and 4s core-photoelectron doublets. The 5s double
Autor:
John Liesegang, Monthida Raoarun, M. Kuiper, G. Domazetis, Bruce D. James, Ian D. Potter, Daniel P. Oehme
Publikováno v:
Fuel. 93:404-414
The paper presents experimental data of catalytic steam gasification of brown coal containing aqua-iron species, and the chemical mechanism(s) at a molecular level. Experimental techniques provided weight loss from catalysed reaction of char with ste
Publikováno v:
Applied Surface Science. 255:2388-2399
Surface effects on Mong Hsu rubies and Kanchanaburi sapphires after heat treatment in a controlled reducing atmosphere (5 mol% H 2 /Ar) have been investigated using advanced surface science techniques including X-ray photoelectron spectroscopy (XPS)
Publikováno v:
Energy & Fuels. 22:3994-4005
Low-rank coal is a complex mixture; consequently, it is necessary to develop simpler molecular representations for computational modeling. Our modeling objective has been to develop molecules suitable for semi-empirical (SE) computations of low-rank
Publikováno v:
Applied Catalysis A: General. 340:105-118
Pyrolysis and catalytic steam gasification of brown coal containing iron hydroxyl complexes have been investigated experimentally and with semi-empirical and density functional theory molecular modelling. Pyrolysis yielded mainly CO 2 , CO, and reduc
Publikováno v:
Applied Surface Science. 253:6883-6891
Advanced surface analysis techniques: X-ray photoelectron spectroscopy and time-of-flight secondary ion mass spectrometry, have been employed in the study of heat treatment of natural corundum as ruby and sapphire. The stones were heat treated in an
Publikováno v:
Applied Surface Science. 253:3746-3750
Methods to minimize the transfer of silicone from PDMS stamps during micro-contact printing have been investigated. This study focused on amino-silanes stamped onto PTFE substrates. Analysis of the stamped surfaces was through surface sensitive techn
Publikováno v:
Applied Surface Science. 252:8646-8650
Mong Hsu rubies have been heat treated in air at 1100, 1200, 1300, 1400, 1500 and 1600 °C. Their visual appearance and surface analysis (XPS) after each stage of heating have been monitored. The characteristic blue core regions of untreated ruby bec
Autor:
G. Domazetis, John Liesegang, Narelle Brack, R. Glaisher, Bruce D. James, Paul J. Pigram, Monthida Raoarun
Publikováno v:
Energy & Fuels. 20:1556-1564
Detailed studies have been carried out on the distribution of organic functional groups and inorganic species in as-received (ar) and acid-washed (aw) brown coals using elemental analysis, energy dispersive X-ray analysis (SEM-EDX), X-ray photoelectr
Publikováno v:
Scopus-Elsevier
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Polypyrrole (PPy) films have been successfully electrodeposited on stainless steel substrates in aqueous solution. In this work, three systems of electrolytes were studied: oxalic acid, dodecylbenzenesulfonic acid (DBSA) and a mixture of oxalic acid