Abstract: A support system for and method of supporting a printing screen unit in a screen printing machine. In one aspect the support system includes a support assembly comprising: a support unit far supporting a printing screen unit (3) comprising a printing screen (5) including printing apertures (6) through which printing medium is printed onto a workpiece; and a tensioning mechanism (18) for tensioning the printing screen in a screen printing operation, wherein the tensioning mechanism is configured to tension the printing screen to a first tension in a printing phase in printing printing medium onto a workpiece and a second tension, which is lower than the first tension, in a separation phase in separating the printing screen unit and the workpiece.

Abstract: X-ray radiation is generated at a target that emits x-ray radiation in response to being struck by accelerated electrons, the electrons being emitted by a cathode that emits electrons in response to being illuminated by electromagnetic radiation from a source, and the x-ray radiation is moved by orienting a surface that directs the electromagnetic radiation from the source toward the cathode.

Abstract: A chlorine dioxide generator comprises a water eductor surrounded by a variable volume plenum. The plenum casing is threaded onto the venturi body, permitting the plenum volume and area to be modified depending on the capacity required. Chlorine and sodium chlorite may be fed tangentially into a conical plenum and reacted therein to form chlorine dioxide, which is discharged into water passing through the eductor at the venturi throat.

Abstract: A circuit board assembly including a circuit board having at least one conductive element attached thereto and at least one surface mount stud carrier mounted on the circuit board and electrically connected to the at least one conductive element.

Abstract: Novel compounds having the structure (I) where R=methyl, ethyl or propyl, R1=methyl or H, R2=methyl, ethyl or propyl, R3=methyl or H, R4=methyl or ethyl, R5?H or methyl, and where R3 and R5 are not both H, excluding N-ethyl-2-methyl-N-(3-methylphenyl) propanamide, can have desirable odour properties, typically of a tropical fruit, cassis character and find use in perfumes and perfumed products

Abstract: A technique for generating a web site in accordance with received data entry by: presenting a prompt for data entry; receiving a data entry in response to the prompt; presenting at least one additional prompt for data entry that is determined at least in part based upon the received data entry; receiving an additional data entry in response to each of the at least one additional prompts; determining at least one characteristic of at least one web site dimension of the web site based on the data entry; generating a multi-dimensional description of the web site based on the determined characteristics; retrieving web site data according to the generated multi-dimensional description of the web site; and generating the web site based upon the generated multi-dimensional description of the web site and the retrieved web site data.

Abstract: A field emission device and method of forming a field emission device are provided in accordance with the present invention. The field emission device is comprised of a substrate (12) having a deformation temperature that is less than about six hundred and fifty degrees Celsius and a nano-supported catalyst (22) formed on the substrate (12) that has active catalytic particles that are less than about five hundred nanometers. The field emission device is also comprised of a nanotube (24) that is catalytically formed in situ on the nano-supported catalyst (22), which has a diameter that is less than about twenty nanometers.

Abstract: A device for influencing an electron beam, for example a beam deflecting device in an electron beam lithography machine, comprises a beam influencing coil (13) operable to influence an electron beam (EB) in the vicinity of the device by way of a magnetic field and a heat dissipation compensating coil (14) operable to provide a heat output so compensating for any change in heat dissipation of the device due to operation of the beam influencing coil (13)—particularly variable operation to vary the field intensity or to create and remove a field—as to reduce the amount of change, preferably to maintain the net heat dissipation at a constant value. The compensating coil (13) can be controlled, for example, by measurement (19) of the heat dissipation of the device and calculating (18) current supply (16) to the coil (13) in dependence on the measured dissipation.

Abstract: A device for influencing an electron beam, for example a beam deflecting device in an electron beam lithography machine, comprises a beam influencing coil (13) operable to influence an electron beam (EB) in the vicinity of the device by way of a magnetic field and a heat dissipation compensating coil (14) operable to provide a heat output so compensating for any change in heat dissipation of the device due to operation of the beam influencing coil (13)—particularly variable operation to vary the field intensity or to create and remove a field—as to reduce the amount of change, preferably to maintain the net heat dissipation at a constant value. The compensating coil (13) can be controlled, for example, by measurement (19) of the heat dissipation of the device and calculating (18) current supply (16) to the coil (13) in dependence on the measured dissipation.

Abstract: A chlorine dioxide generator comprises a water eductor surrounded by a variable volume plenum. The plenum casing is threaded onto the venturi body, permitting the plenum volume and area to be modified depending on the capacity required. Chlorine and sodium chlorite may be fed tangentially into a conical plenum and reacted therein to form chlorine dioxide, which is discharged into water passing through the eductor at the venturi throat.

Abstract: A method of forming a vacuum microelectronic device including steps of forming at least one electron emitter on a substrate, applying a first electric field to move a portion of the at least one electron emitter in a direction toward the first electric field, and maintaining the at least one electron emitter in the direction after removing the first electric field.

Abstract: A method of fabricating a field emission device cathode using electrophoretic deposition of carbon nanotubes in which a separate step of depositing a binder material onto a substrate, is performed prior to carbon nanotube particle deposition. First, a binder layer is deposited on a substrate from a solution containing a binder material. The substrate having the binder material deposited thereon is then transferred into a carbon nanotube suspension bath allowing for coating of the carbon nanotube particles onto the substrate. Thermal processing of the coating transforms the binder layer properties which provides for the adhesion of the carbon nanotube particles to the binder material.

Abstract: A field emission source comprising a first conductive region, a layer of nanotubes deposited on the first conductive region, and a second conductive region placed over and spaced from the nanotube coated first conductive region. After the device structure is fabricated, a laser beam is used to dislodge one end of the nanotube from the first conductive surface and an electric field is simultaneously applied to point the freed end of the nanotube at the second conductive region.

Abstract: A field emission device and method of forming a field emission device are provided in accordance with the present invention. The field emission device is comprised of a substrate (12) having a deformation temperature that is less than about six hundred and fifty degrees Celsius and a nano-supported catalyst (22) formed on the substrate (12) that has active catalytic particles that are less than about five hundred nanometers. The field emission device is also comprised of a nanotube (24) that is catalytically formed in situ on the nano-supported catalyst (22), which has a diameter that is less than about twenty nanometers.

Abstract: A computer system has a heap for storing objects and a card table for tracking updates to objects on the heap, typically for garbage collection purposes. In particular, the heap is divided into segments, each corresponding to a card in the card table, and any update to a segment in the heap triggers a write barrier to mark the corresponding card in the card table. It is important that this write barrier is as efficient as possible to optimize system performance. In some circumstances an object update may be made to an address outside the heap. To ensure that this still properly maps to a card in the card table, the entire memory space is folded cyclically, so that any given memory address corresponds to one, and only one card, in the card table.

Abstract: Novel compounds having the structure (I) where R=methyl, ethyl or propyl, R1=methyl or H, R2=methyl, ethyl or propyl, R3=methyl or H, R4=methyl or ethyl, R5=H or methyl, and where R3 and R5 are not both H, excluding N-ethyl-2-methyl-N-(3-methylphenyl) propanamide, can have desirable odour properties, typically of a tropical fruit, cassis character and find use in perfumes and perfumed products.

Abstract: A tagging material comprises a pressure sensitive adhesive tape incorporating electromagnetic sensor material whose presence can be detected. Tags are cut from the tagging material as the tagging material and articles are conveyed along converging paths and are adhered to the articles by the adhesive of the tape by means of apparatus comprising a tagging material feeding means and an applicator head.

Abstract: Optical mapping apparatus in which a long, one or two dimensional detector array or higher resolution two dimensional array is synthesised using a two dimensional array (of shorter dimensions). The two dimensional array has an input mask having waveguides with a smaller input than output and the apparatus is adapted to scan the scene relative to the array to image different parts of the scene. In one embodiment the apparatus is adapted such that different parts of a line through the image which is perpendicular to the scan direction are imaged at different times as the detector array is scanned.

Abstract: A method of fabricating a field emission device cathode using electrophoretic deposition of carbon nanotubes in which a separate step of depositing a binder material onto a substrate, is performed prior to carbon nanotube particle deposition. First, a binder layer is deposited on a substrate from a solution containing a binder material. The substrate having the binder material deposited thereon is then transferred into a carbon nanotube suspension bath allowing for coating of the carbon nanotube particles onto the substrate. Thermal processing of the coating transforms the binder layer properties which provides for the adhesion of the carbon nanotube particles to the binder material.

Abstract: A technique for classifying objects within an image is disclosed. In one embodiment, the technique is realized by identifying a portion of an image, and then filtering the portion of the image based upon an object characteristic and a reference within the image. The image can be a representation of a plurality of pixels, wherein at least some of the plurality of pixels are enabled to represent the identified portion of the image. The reference can be one of a reference plane or a terrain within the image.