摘要:
A stabilizer is shown with a special leading edge for enhancing the magnetic interface between a magnetic head and a rapidly moving pliable magnetic disk. The stabilizer includes a stabilizing block with an opening through which the head protrudes for engagement with the disk. A flat, circumferential air bearing surface surrounds the opening adjacent the disk for generating coupling forces that deform the disk out of its nominal plane and into intimate contact with a transducing gap on the head. The leading edge of the stabilizer has a generally arcuate surface that abruptly meets the air bearing surface at a non-tangential transition. The transition appears to the disk as a fulcrum, imparting a torque to the disk that contributes to the coupling forces and ensures "capture", that is, interface, even with disks having troublesome irregularities such as warps.
摘要:
A method of eliminating the foam above a slurry of a corrosive liquid and solid matter where the foam is caused by a gas evolved by the reaction between the heated corrosive liquid and the solid matter comprising providing the heating energy by microwaves. This method has been found to be particularly useful in the sulphuric acid leaching of an ore concentrate in the production of beryllium hydroxide.
摘要:
A flexible magnetic disk is rotated at a relatively high speed to cause the disk to revolve substantially in a plane. A pair of elongate guides for the disk are mounted in a converging relation, which permits the guides to reside substantially along respective radii of the rotated disk. The guides penetrate the plane of the rotated disk substantially along the two radii, and therefore will deflect successive radial sectors of the disk from the plane as each of the sectors is rotated across a radially tapered space between the guides. A magnetic record and/or playback head is positioned to urge at least a portion of a radial sector of the disk, deflected from the plane, towards the tapered space to effect a reverse deflection of the portion in the vicinity of the head. Thus the reverse-deflected portion is substantially conformed with the radially directed forces along the rotated disk, thereby assuring an intimate and stable head-to-disk relation.
摘要:
A system and method for a beverage container configured to test for a contaminated beverage in the beverage container comprises a base of the beverage container, an upper portion of the beverage container, and a sidewall with an inner surface and an outer surface that extends from the base to the upper portion, and a testing material. A portion of the beverage container is the testing material configured to visibly react when the portion of the beverage container is contacted with the contaminated beverage.
摘要:
A system and method for a beverage container configured to test for a contaminated beverage in the beverage container comprises a base of the beverage container, an upper portion of the beverage container, and a sidewall with an inner surface and an outer surface that extends from the base to the upper portion, and a testing material. A portion of the beverage container is the testing material configured to visibly react when the portion of the beverage container is contacted with the contaminated beverage.
摘要:
A system and method for a beverage container configured to test for a contaminated beverage in the beverage container comprises a base of the beverage container, an upper portion of the beverage container, and a sidewall with an inner surface and an outer surface that extends from the base to the upper portion, and a testing material. A portion of the beverage container is the testing material configured to visibly react when the portion of the beverage container is contacted with the contaminated beverage.
摘要:
A system and method for a beverage container configured to test for a contaminated beverage in the beverage container comprises a base of the beverage container, an upper portion of the beverage container, and a sidewall with an inner surface and an outer surface that extends from the base to the upper portion, and a testing material. A portion of the beverage container is the testing material configured to visibly react when the portion of the beverage container is contacted with the contaminated beverage.
摘要:
In various aspects, the present invention provides substantially monolayer thick molecular films with photoresponsive wettability, the molecules of said films comprising a photochromic molecule coordinated to a metal atom, which is coordinated to an organic tethering molecule, surface coupling group, or both, having a group for attachment to a surface of a substrate. In various aspects, the present inventions also provide photochromic articles comprising said films, methods of forming said films, and methods of manufacturing photochromic articles using said films. In various embodiments, provided are molecular films where the photoconversion between configurations of the photochromic molecule is substantially reversible by irradiation with light. In various embodiments, provided are films where the photoconversion is substantially irreversible by irradiation with light.
摘要:
Self-assembled monolayers and multilayer thin film structures were assembled from multiple components that were linked non-covalently by metal-ligand complexation. Non-covalently assembled multicomponent films assembly my the present method obviate problems associated with the covalent assembly of SAMs and multilayer thin film structures from large molecules. In one preferred embodiment, the disclosed film structures comprise 2,6 pyridinedicarboxylate ligands attached to an alkanethiol, which form a self-assembled monolayer on gold. The SAM is subsequently functionalized by sequential deposition of metal ions and ligands, allowing incorporation of one or more chromophores, photooxiding compounds or photoreducing to form multilayer film structures. Transition metals, lanthanide metals and other metals of varying charge may be employed in complexing with with 2,6 pyridinedicarboxylate ligands to form stable ordered structures. The non-covalent assembly method provides for multilayer film formation from mixtures of metal ions and a varying number of film layers. Multilayer thin film structures exhibit stable cathodic photocurrent generation in the presence of methyl viologen or EDTA in solution.