Abstract:
Un appareil de micro-analyse ou de visionnement d'échantillons comprend: a) un agencement pour produire un faisceau atomique neutre de balayage microscopiquement focalisé, agencement qui comprend à son tour; (i) un dispositif (1) de génération d'un faisceau d'ions, (ii) un dispositif (4) de balayage du faisceau d'ions, (iii) un dispositif (5) pour focaliser le faisceau d'ions sur l'endroit où l'échantillon (8) sera localisé; et (iv) un dispositif d'échange de charge (6) entre le dispositif de focalisation et l'emplacement de l'échantillon qui permet d'obtenir un faisceau neutre de balayage focalisé sur l'échantillon; et b) un dispositif de détection (9) pour détecter les particules émises par l'échantillon.
Abstract:
In an apparatus or installation having a metal part corroding in an electrolyte contacting the part, that part is a first electrode electrically insulated from a second electrode, for example another part of the apparatus, also contacting the electrolyte. No external electrical power is applied to the electrodeslelectrolyte system. The low frequency voltage between the electrodes is observed. This voltage is a low frequency noise signal. Amplitude values of the signal are measured and subjected to an averaging computation yielding data indicating the corrosion rate of the first electrode and the nature of the corrosion.
Abstract:
Compounds are disclosed that are designed to mimic the activity of combretastatin A-4 based on chalcone, aurone, or indanone structures, or involving benzoquinone or quinone rings. The anti-cancer activity of exemplified compounds is demonstrated in a range of in vitro and in vivo assays.
Abstract:
Beschrieben wird eine Prozesseinrichtung der chemischen und/oder physikalischen Beeinflussung einer Flüssigkeit mit einer Messanordnung 11 zur Erfassung eines Prozessparameters der Flüssigkeit sowie ein Verfahren zu deren Betrieb. Erfindungsgemäß enthält die Einrichtung eine Messanordnung 11, die mit einem Einlass 15 an die Einrichtung 17 zur Durchführung des Prozesses angeschlossen ist, so dass vorteilhafterweise eine direkte Entnahme der zu untersuchenden Flüssigkeit über einen Schlauch 16a erfolgen kann. Die Analyse der Flüssigkeit wird durch eine in einem Trennkanal 20 erfolgende elektrophoretische Separation vorgenommen. Dadurch ist vorteilhaft eine Analyse der Flüssigkeit hinsichtlich der in dieser vorhandenen Ladungsträger mit verbesserter Aussagekraft möglich.
Abstract:
An identification apparatus comprising a chamber having one or more buffer fluid inlets and a plurality of sample fluid inlets, the chamber being configured such that the buffer fluid focuses the sample fluid into sample fluid streams, the sample fluid streams and buffer fluid being contained in a single laminar flow, wherein the apparatus is provided with means for directing optical excitation simultaneously at a plurality of the sample fluid streams to allow parallel fluorescence and/or scattering measurements.
Abstract:
Keratin-containing fabric is treated by exposing it to a fluorine-containing gas for a relatively short time, for example 60 seconds or substantially less, by passing the fabric continuously through an atmosphere containing fluorine gas. The fluorine content of the gas to which the fabric is exposed can be relatively low, for example 3 %. The fluorinated fabric may be treated with a polymer such as an amino polysiloxane, and when so treated is protected against shrinkage and maintains good fabric mechanical properties.
Abstract:
A quantum well device has an active region adapted in use to pass a tunnelling current of charge carriers. The active region comprising layers of material forming alternating potential barriers and potential wells. The active region has a first potential well at one end, having regard to the direction of flow of the tunnelling current of charge carriers, which defines a first energy level, and a further structure which defines second and third energy levels. The relative heights and thicknesses of the potential barriers when the device is in use are structured so that the first energy level has a longer lifetime than the second and third energy levels and there is coupling between the three energy levels. The degree of coupling is strongest between the second and third energy levels. The transmission coefficient through the active region shows a resonance peak at each of the energies of the three energy levels, the transmission peak at the energy of the first energy level being greater than the transmission peaks at the energies of the second and third quasi-defined energy levels respectively. The structure is such that when the device is in use the energy of the first energy level lies between the energies of the second and third energy levels but is greater or less than the average of the energies of the second and third energy levels.
Abstract:
There is disclosed false twist texturing comprising supplying a yarn hot (11) to a twist trap (12) upstream of a false twist device (13) instead of supplying heat to the yarn intermediate the twist trap and the false twist device.
Abstract:
There is disclosed a method for thermally processing a textile structure in which the structure is run through a treatment zone in which the structure temperature is changed by heat exchange by contact with a flowing liquid.