摘要:
The invention provides a method and system to record the absorption of a sample, said method comprising the steps of providing first and second pulsed beam of light on said sample using one or more light beams, said first and second pulsed beam having different spatial definition; measuring the difference in intensity transmitted through and/or reflected by a sample; and generating an image by scanning the sample while making such measurements. The system and method of the invention can work down to resolution of several 100 of nm, affording thus a large improvement in comparison to synchrotron IR imaging that is the closest technique existing today. The advantage versus scanning probe approach is the absence of physical probe, thus suppressing confinement to surface information and removing uncertainty regarding the working behaviour of the probe.
摘要:
A method of adapting a security configuration of a data processing application at runtime, and a system, together with its computing architecture, are disclosed. The system stores a causal network comprising a plurality of nodes and a plurality of incoming and outgoing causal links associated therewith, wherein each node of the causal network is associated with a security concern or a requirement that can be affected by any configuration of the security controls. The current value of assets nodes, as well as those of the security concerns that can be affected by monitored contextual factors, are updated. The control nodes corresponding to the security controls is updated according to the security configuration whose utility is evaluated by the causal network. The node corresponding to the at least one variable is updated with the determined current value, which is propagated through the causal network through the causal links associated with the updated node. The security configuration with the highest utility is selected and replaces the actual configuration by activating and/or deactivating the security functions corresponding to security control nodes enabled/disabled in the selected security configuration.
摘要:
An apparatus for testing effects of relative movement of a fluid and an object has a test chamber (3) arranged to contain a fluid and is open in a manner to allow fluid inlet and/or outlet while the movable surface is moving. There is a drive (1) for moving a movable surface (13) with respect to the fluid in the chamber, and a probe for monitoring fluid conditions within the test chamber. The chamber has an inlet (5) and a separate outlet (6), and the drive is arranged to rotate a rotor (1) having the movable surface (13).
摘要:
A mixture of powders for preparing a sintered nickel-titanium-rare earth (Ni—Ti—RE) alloy includes Ni—Ti alloy powders comprising from about 55 wt. % Ni to about 61 wt. % Ni and from about 39 wt. % Ti to about 45 wt. % Ti, and RE alloy powders comprising a RE element.
摘要:
An electrode for an electrochemical sensor device. The electrode comprises a substrate, a carbon nanofibre layer and an enzyme immobilised on the carbon nanofibre layer. The carbon nanofibre layer comprises mesoporous carbon nanofibers and the enzyme is immobilised in the pores of the mesoporous carbon nanofibers. The carbon nanofibre layer is formed from lignin and a second polymeric material, wherein the second polymeric material is immiscible with lignin, through a process of stabilisation and carbonisation which provides a conductive carbon nanofibre framework comprising mesopores suitable for immobilisation of the enzyme. The enzyme immobilised in the carbon nanofibre layer can function by interacting with a target compound or biomarker in a sample solution applied to the electrode which produces a measurable electrochemical change in the electrode. A method of forming the electrode, a sensor device comprising the electrode, a use of a mesoporous carbon nanofibre material for immobilising an enzyme in a sensor device and a method of detecting a target compound or biomarker using the electrode are also disclosed. An electrode for an electrochemical sensor device. The electrode comprises a substrate, a carbon nanofibre layer and an enzyme immobilised on the carbon nanofibre layer. The carbon nanofibre layer comprises mesoporous carbon nanofibers and the enzyme is immobilised in the pores of the mesoporous carbon nanofibers. The carbon nanofibre layer is formed from lignin and a second polymeric material, wherein the second polymeric material is immiscible with lignin, through a process of stabilisation and carbonisation which provides a conductive carbon nanofibre framework comprising mesopores suitable for immobilisation of the enzyme. The enzyme immobilised in the carbon nanofibre layer can function by interacting with a target compound or biomarker in a sample solution applied to the electrode which produces a measurable electrochemical change in the electrode. A method of forming the electrode, a sensor device comprising the electrode, a use of a mesoporous carbon nanofibre material for immobilising an enzyme in a sensor device and a method of detecting a target compound or biomarker using the electrode are also disclosed.
摘要:
The present disclosure relates to deployable structures, to methods and apparatus for deployment of deployable structures, and to associated manufacturing methods. Such deployable structures suitably comprise components for space structures, such supports for solar arrays, antennas or other similar systems. The deployable structure (500) comprises a first lattice (514) arrangeable in a stowed configuration and a deployed configuration. The deployable structure also comprises a second lattice (516) arrangeable in a stowed configuration and a deployed configuration, wherein with the lattices arranged in the stowed configuration the second lattice (516) nests in the first lattice (514).
摘要:
A securement device 1 for securely attaching tubular articles 2 to surfaces comprising an anchor pad 3 for placing the securement device 1 on the surface, a substantially cylindrical base 4 on the anchor pad 3 and a screw cap 5 rotatably mountable on the base 4 at a screw mounting 6 defined between the base 4 and the screw cap 5 between an article receiving position and an article gripping position in which radial pressure is applied to the article 2 placed in the securement device 1 to securely hold the article 2 without the use of external adhesive fixings and prevent micro-pistoning of the article 2.
摘要:
An apparatus for use in measuring a property of a fluid and a method of measuring a property of a fluid in a conduit. The apparatus is for use in measuring a property of a fluid, the apparatus comprising: a conduit comprising an inlet through which fluid can enter the conduit; a movable member retained within the conduit, the movable member configured to move in accordance with the property of the fluid in the conduit; and a magnetic field generating unit for generating one or more magnetic fields in the conduit, an interaction between the movable member and the one or more magnetic fields being detectable via the magnetic field generating unit, to measure the property.
摘要:
A flowable liquid formulation for 3D printing is described. The formulation comprises from 0.1 to 25 wt. % radiopaque particles, wherein at least 50% by weight of the particles have a diameter of at most 100 nm. The formulation further comprises monomeric, oligomeric and/or polymeric precursors adapted for polymerization to form a solidified article. Also described is an article (100) formed by 3D printing, the article (100) comprising a first 3D printed region (110) having a first radiopacity and a second 3D printed region (120) having a second radiopacity, wherein the first radiopacity is greater than the second radiopacity. Also described is a method of forming the article (100).
摘要:
A material susceptible to dielectric heating has a base polymeric thermoplastic material (1) and a dielectric heating susceptor (2, 3) which increases susceptibility to heating by irradiation with electromagnetic, for example RF or microwave, radiation. The dielectric heating susceptor has a polymeric material (2) such as PVDF which is different from the base polymeric material and has a higher dielectric loss factor than the base polymeric material. The dielectric heating susceptor also comprises electrically polarisable entities such as carbon black dispersed within the base polymeric material without forming a conductive network. The two susceptor materials in combination with the base polymer are particularly effective together at improving susceptibility to electromagnetic radiation heating of the whole material.