Results 261 to 270 of about 1,344,254 (300)
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Transfer of metallic mercury into the foetus
Experientia, 1972Der Quecksilbergehalt im Mutterblut von Ratten war nach Injektionen von Quecksilbersalz 25 mal hoher als derjenige von mit radioaktivem Quecksilberdampf behandelten Muttertieren. Auf den Foetus ging hingegen 47 mal mehr Quecksilber uber, wenn das Muttertier Quecksilberdampfen ausgesetzt wurde.
M R, Greenwood, T W, Clarkson, L, Magos
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Manipulating Metal‐to‐Metal Charge Transfer for Materials with Switchable Functionality
Angewandte Chemie - International Edition, 2018AbstractMetal‐to‐metal charge transfer (MMCT) describes electron transfer between metal ions, to generate valence isomers with markedly different electronic configurations. In particular, MMCT changes the spin states of single‐metal sites and the coupling interactions between them, while also changing the symmetry in charge distribution.
Yin-Shan Meng, Osamu Sato, Tao Liu
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Heat Transfer Characterization of Metallic Foams
Industrial & Engineering Chemistry Research, 2005Gas−solid heat transfer coefficients were determined in open-celled metal foams as part of a study aimed at evaluating the application of metal foams as catalyst supports in gas−solid catalytic processes with short contact times and high reaction rates, typically controlled by diffusional mass transport.
GIANI, NELSON LEONARDO +2 more
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Photoinduced Ligand-to-Metal Charge Transfer in Base-Metal Catalysis
Synthesis, 2023AbstractThe absorption of light by photosensitizers has been shown to offer novel reactive pathways through electronic excited state intermediates, complementing ground-state mechanisms. Such strategies have been applied in both photocatalysis and photoredox catalysis, driven by generating reactive intermediates from their long-lived excited states ...
Tomislav Rovis, Sean M. Treacy
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Helium II Transfer on Metal Surfaces
Nature, 1950ONE of the most striking features of the film flow in liquid helium II is provided by the fact that the rate of transfer seems to be largely independent of the experimental conditions1. It was thought for some time that the rate was influenced by the geometrical shape of the transfer vessel, or by a temperature gradient in the film2, or by small ...
K, MENDELSSOHN, G K, WHITE
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Metal-Catalysed Transfer Hydrogenation of Ketones
Topics in Current Chemistry, 2016We highlight recent developments of catalytic transfer hydrogenation of ketones promoted by transition metals, while placing it within its historical context. Since optically active secondary alcohols are important building blocks in fine chemicals synthesis, the focus of this review is devoted to chiral catalyst types which are capable of inducing ...
Bogdan, Štefane, Franc, Požgan
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Significance of Metallic Transfer in Orthopædic Surgery
Nature, 1954IN an earlier communication1 attention was directed to the transfer of metal which can occur between a screwdriver tip and a screw head during the operation of screwing, and the possible significance this might have in orthopaedic surgery was discussed.
F. P. BOWDEN +2 more
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High-Yield Transfer Printing of Metal–Insulator–Metal Nanodiodes
ACS Nano, 2012Nanoscale metal-insulator-metal (MIM) diodes represent important devices in the fields of electronic circuits, detectors, communication, and energy, as their cutoff frequencies may extend into the "gap" between the electronic microwave range and the optical long-wave infrared regime.
Bareiß, M. +12 more
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Journal of Applied Physics, 1952
A new theory of metal transfer and wear is suggested in this paper. The essence of the theory is as follows: Metal transfer and wear take place at points of actual contact. The interfaces of the high spots that actually make contact are roughened as the result of plastic deformation when they carry normal load.
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A new theory of metal transfer and wear is suggested in this paper. The essence of the theory is as follows: Metal transfer and wear take place at points of actual contact. The interfaces of the high spots that actually make contact are roughened as the result of plastic deformation when they carry normal load.
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Controlling the electron transfer mechanism in metal–molecules–metal junctions
Electrochimica Acta, 2005We show how the mechanism of electron transfer through molecules can be switched between different regimes by using Hg-based metal–molecules–metal junctions. The junctions are easy to assemble and allow for hosting of self-assembled monolayers (SAMs) of a large variety of molecular structures.
E. TRAN +3 more
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