Concept

Hydroxyde de potassium

Publications associées (78)

Hydroxide and proton migration in aquaporins

Hypothetical hydroxide and proton migration along the linear water chain in Aquaporin GlpF from Escherichia coli are studied by ab initio Car-Parrinello mol. dynamics simulations. It is found that the protein stabilizes a bipolar single file of water. The ...

2005

NMR, PGSE diffusion, and X-ray diffraction studies of lithium and potassium salts derived from diphenylphosphino(o-cyanophenyl)aniline and their crown ether complexes

Paul Joseph Dyson, Zhaofu Fei

H-1, P-31, and Li-7 pulsed-gradient spin-echo (PGSE) diffusion and variable-temperature NMR results for THF solutions of the lithium and potassium salts derived from diphenylphosphino(o-cyanophenyl)aniline are reported and compared to the solid-state resul ...

2005

Role of cement in improving concrete durability

Karen Scrivener

The role of cement in improving concrete durability is complex. Generally the role played by cement is secondary to the role of concrete mix design and curing. Some of these interacting effects are illustrated by discussing the roles of calcium hydroxide, ...

2005

Inhibition of bacterial adhesion on PVC endotracheal tubes by RF-oxygen glow discharge, sodium hydroxide and silver nitrate treatments

Christoph Hollenstein, Karine Triandafillu

Medical-grade poly(vinyl chloride) (PVC) was chemically modified to study how the incorporation of monovalent silver influences Pseudomonas aeruginosa adhesion and colonization. The modification investigated consisted of a radio frequency-oxygen (RF-O-2) g ...

2004

Simultaneous prediction of Cryptosporidium parvum oocyst inactivation and bromate formation during ozonation of synthetic waters

Urs von Gunten, Ji Hyun Kim

A model was developed to simultaneously assess Cryptosporidium parvum oocyst inactivation and bromate formation during ozonation of synthetic solutions in batch and flow-through reactors. The model incorporated 65 elementary chemical reactions involved in ...

2004

Deep-ultraviolet-microelectromechanicaI systems stencils for high-throughput resistless. patterning of mesoscopic structures

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart

We describe a combination of 100-mm wafer scale deep-ultraviolet (DUV) exposure and a microelectromechanical systems (MEMS) process to fabricate silicon nitride membranes with submicrometer apertures to be used as miniature shadow masks or nanostencils. Ap ...

2004

Deep-ultraviolet–microelectromechanical systems stencils for high-throughput resistless patterning of mesoscopic structures

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart

2004

Full-wafer stencils fabricated by a DUV/MEMS process for high-throughput patterning of mesoscopic structures

Jürgen Brugger, Marc Antonius Friedrich van den Boogaart

Photoresist-based lithography has major limitations when applied to micro-electro-mechanical systems (MEMS) with mechanically fragile and/or chemically functionalised surfaces. As a remedy, alternative, complementary nanopatterning methods have been develo ...

2004

Substrate binding to mononuclear metallo-beta-lactamase from Bacillus cereus

Matteo Dal Peraro

Structure and dynamics of substrate binding (cefotaxime) to the catalytic pocket of the mononuclear zinc-beta-lactamase from Bacillus cereus are investigated by molecular dynamics simulations. The calculations, which are based on the hydrogen-bond pattern ...

2004

Pentadienyl type lithium and potassium species: the regioselectivity of their reactions with electrophiles

Seven structurally distinct pentadienyl type lithium and potassium compds. were screened against a variety of electrophiles in order to assess the regioselectivity of the trapping reactions. Organoborates and analogs thereof (fluorodimethoxyborane) proved ...

2001

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