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Surface Porphyrins Metalate with Zn Ions from Solution
(American Chemical Society, 2015-12)
Controlling the metalation of surface porphyrins is a critical process in porphyrin-based devices. Indeed, surface porphyrins are known to metalate in ultrahigh vacuum from codeposited metal atoms or substrate atoms; ...
Quantitative Determination of the Number of Surface Active Sites and the Turnover Frequencies for Methanol Oxidation over Metal Oxide Catalysts: Application to Bulk Metal Molybdates and Pure Metal Oxide Catalysts
(Academic Press Inc Elsevier Science, 2001-09-23)
The present work investigates the number and nature of the surface active sites and the catalytic activity of bulk metal molybdates and bulk metal oxides on methanol selective oxidation. Bulk metal molybdates were synthesized ...
Aging of plasma-activated copper and gold surfaces and its hydrophilic recovery after water immersion
(Elsevier B.V., 2014-01-01)
A significant increase of surface hydrophilicity of copper and gold surfaces was obtained after atmospheric pressure plasma treatment using the surface dielectric barrier discharge with specific electrode geometry, the ...
Time-dependent induced potentials in convoy electron emission
(Elsevier Science, 2006-12)
We study the time-dependent induced potentials at the convoy electron position due to the self-interaction with a metal surface and to the shock wave created by the positive hole (vacancy) left. The time evolution of these ...
Pool boiling heat transfer of HFE-7100 on metal foams
(Elsevier, 2019-12-26)
The search for new techniques to increase boiling heat transfer has been driven by more efficient and compact heat exchangers, especially in microelectronics and equipment with high thermal loads. Two-phase cooling systems ...
Spatial distribution, bioavailability, and toxicity of metals in surface sediments of tropical reservoirs, Brazil
(2018-04-01)
Depending on the environmental conditions, surface sediments can retain all the contaminants present and provide a record of the anthropic activities affecting the aquatic environment. In order to analyze the impacts on ...
Quantification of active sites for the determination of methanol oxidation turn-over frequencies using methanol chemisorption and in situ infrared techniques. 1: Supported metal oxide catalysts
(American Chemical Society, 2001-10)
Methanol oxidation over metal oxide catalysts is industrially important for the production of formaldehyde, but knowledge about the intrinsic catalysis taking place is often obscured by a lack of knowledge as to the number ...
Adhesive Bonding of Resin Composite to Various Ni-Cr Alloy Surfaces Using Different Metal Conditioners and a Surface Modification System
(Wiley-Blackwell, 2009-12-01)
Purpose: This study evaluated the effect of three metal conditioners [Metal Photo Primer (R) (MPP), Cesead II Opaque Primer (R) (OP), Targis Link (R) (TL)], and one surface modification system [Siloc (R) (S)] on the shear ...
EVALUATION of HEAVY METAL AVAILABILITY IN CONTAMINATED SEDIMENTS FROM THE ILHA SOLTEIRA HYDROELECTRIC DAM on THE PARANA RIVER AT ILHA SOLTEIRA, SP, BRAZIL
(Parlar Scientific Publications (p S P), 2010-01-01)
This paper investigates the availability of cadmium, copper and lead in surface sediment from a contaminated area in the Ilha Solteira hydroelectric dam. The surface sediment (first 5 cm) was fractionated with plastic ...
Evaluation of heavy metal availability in contaminated sediments from the Ilha Solteira hydroelectric dam on the parana river at Ilha Solteira, SP, Brazil
(2010-12-13)
This paper investigates the availability of cadmium, copper and lead in surface sediment from a contaminated area in the Ilha Solteira hydroelectric dam. The surface sediment (first 5 cm) was fractionated with plastic ...