摘要:
The invention relates to a medicinal cushion (1), in particular an anti-decubitus cushion, which is in particular multi-cellular. Said cushion is characterised in that it is equipped, at least in the area that comes into contact with the skin (6), with an active membrane (3) based on a skin-compatible matrix (4), into which a molecular sieve is mixed, said sieve being charged with at least one active agent (Z, Z1 Z2). The molecular sieve/active agent adduct (5) releases the active agent when the active membrane comes into contact with the skin (6) in conjunction with the transpiration of the skin. In a particularly advantageous embodiment of the invention, the medicinal cushion is characterised in that the molecular sieve/active agent adduct (5) also contains crystallisation water in such a way that the molecular sieve is partially dehydrated in relation to a sufficient base mol quantity (m) of crystallisation water. The molecular sieve containing the reduced mol quantity (m') of crystallisation water is charged with the active agent (Z, Z1 Z2) in such a way that when the active membrane (3) comes into contact with the skin (6), water is adsorbed and the active ingredient is desorbed, thus increasing the crystallisation water content of the molecular sieve.
摘要:
The invention relates to a fuel cell (1) comprising at least the following components: a proton-conducting membrane (2) serving as an electrolyte; catalyst layers (3), which cover the membrane (2) on both sides; gas-permeable electrodes provided in the form of an anode (4) and a cathode (5), which rest against the outwardly pointing surface of the catalyst layers (3), and; electrically conductive plates (6), which contact the electrodes in an electrically conductive manner whereby being located close to one another and which, together with the electrodes, delimit gas-conducting channels. The fuel cell also comprises gas connections for supplying hydrogen (H2) on one side and oxygen (O2) on the other. The inventive fuel cell (1) is characterized in that the membrane (2) has a matrix into which a proton-conducting organic-based polymer substance is incorporated.
摘要:
The invention relates to a rubber material (2) that is low in N-nitrosamine and that is used for rubber articles (1) that are subject to high dynamic-mechanical and thermal stresses. The inventive rubber material comprises a vulcanized rubber mixture, especially on the basis of an ethylene-propylene-diene terpolymer, and admixed thereto conventional mixture ingredients. The inventive rubber material is especially characterized in that a molecular sieve including or not water of crystallization is admixed to the rubber mixture and is charged with a free-radical scavenger (Z), while forming a molecular sieve/free-radical scavenger addition compound (3), the free-radical scavenger binding nitrogen oxides (X1) and/or secondary amines (X2) and/or N-nitrosamines (X3). According to an especially advantageous embodiment of the invention, the rubber material (2) is characterized in that the molecular sieve/free-radical scavenger addition compound (3) additionally contains water of crystallization. The molecular sieve is partially dehydrated with respect to a sufficient basic mole quantity (m) and the molecular sieve comprising the reduced mole quantity (m') of water of crystallization is charged with the free-radical scavenger (Z) so that when water is adsorbed, the free-radical scavenger is desorbed as the content of water of crystallization of the molecular sieve increases, and the free-radical scavenger binds nitrogen oxides (X1), and/or secondary amines (X2) and/or N-nitrosamines (X3).
摘要:
The invention relates to a rubber-based soundproofing material. The vulcanised rubber mixture consists of the following components: - a rubber or rubber blend; -a heavy metal and/or its alloys and/or its oxides and/or its salts in powder form, in addition to conventional mixing ingredients. The inventive material is characterised by a rubber mixture based on non-blended chlorobutyl rubber, bromobutyl rubber or acrylate rubber; or nitrile rubber or styrene-butadiene rubber, both of which are blended with epoxidised natural rubber. The rubber mixture has the following proportions: 10-50 wt. % rubber or rubber blend, 85-40 wt. % heavy metal and/or its alloys and/or its oxides and/or its salts, 5-10 wt. % mixing ingredients. The inventive rubber material based on bromobutyl rubber and Fe powder (curves a and b) is compared with sheet metal (curves c and d).
摘要:
The aim of the invention is to obtain measurement signals in time-constant inhomogeneous magnetic fields using an NMR-MOUSE. During a measuring operation, said measurement signals make it possible to detect a plurality of space points in the measuring field with problem-specific contrast. To this end, pulsed supplementary magnetic fields BZ (e.g. gradient fields) are generated whose pulse frequency is adjusted in such a way that the effect thereof on the echo signal of the high-frequency oscillating circuit for local coding persists, and that these echo pulses which are generated in this manner and which are provided for generating contrast with additional high-frequency pulses are repeatedly refocused, without pulsed supplementary magnetic fields, to additional echo signals. The supplementary magnetic fields effect variations of the entire magnetic field in different directions in space. If the high-frequency pulses follow one another with the time interval tEc, the supplementary magnetic fields for the local coding are generated only within the first half of the echo time tEc/2. The echo signals S formed thereby are subsequently fetched in a repeated manner and with a temporal interval tEc in order to generate contrast. In order to detect the surrounding field to be measured, not only a high number of measuring points can be sampled inside a measuring time unit ('multiplex advantage'), but the measuring points are determined, at the same time, also with the strongest contrast.
摘要:
The invention relates to a fuel cell (1) comprising at least the following parts: a proton-conducting membrane (2) serving as an electrolyte; catalyst layers (3), which cover the membrane (2) on both sides; gas permeable electrodes provided in the form an anode (4) and cathode (5), which rest on the outwardly pointing surface of the catalyst layers (3); electrically conductive plates (6), which contact the electrodes in an electrically conductive manner while being located at small distances from one another, and which, together with the electrodes, delimit gas-conducting channels, and; gas connections for supplying hydrogen (H2) on one side and oxygen (O2) on the other. The inventive fuel cell (1) is characterized in that the membrane (2) is a hybrid membrane comprising a matrix into which a channel-forming protein is mixed. The invention also relates to advantageous variants of the membrane (2) in which the matrix, for example, contains a molecular sieve/protein adduct.
摘要:
The invention relates to a material comprising at least the following: a matrix (2), especially with a polymer base; a support which is worked into said matrix. The material data can be detected by means of an NMR device (5). The inventive material is characterized in that the support is loaded with at least one active agent (Z) and with a contrast agent (X), these forming a support/active agent/contrast agent adduct (3); and in that the distribution of the adduct (3) and therefor, the active agent (Z) in the matrix (2), can be measured using the NMR device (5). The support is preferably a molecular sieve. The invention also relates to an advantageous method for producing the inventive material.
摘要:
The invention relates to a device for inspecting flat goods made of polymeric materials with embedded textile strength supports with which the arrangement and the progression of the strength supports in the polymeric material can be determined in a nondestructive manner and without derogating the quality of the flat goods. According to the invention, NMR-MOUSE probes are used for conducting a nuclear magnetic analysis of the flat goods. The NMR-MOUSE probes (9a, 9b, 9c) form a measuring plane on a measuring body (1) on which the flat good (3) is placed, and are arranged in the measuring plane (6) such that they overlap with one another preferably in the direction of the material in which the inspection is conducted.