1,721,927 research outputs found

    Morgan, H B, 402150

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/406027Surname: MORGAN. Given Name(s) or Initials: H B. Military Service Number or Last Known Location: 402150. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 8249.246933 Item: [2016.0049.38304] "Morgan, H B, 402150

    Morgan, H G, NX13019

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/406054Surname: MORGAN. Given Name(s) or Initials: H G. Military Service Number or Last Known Location: NX13019. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 9553.246960 Item: [2016.0049.38331] "Morgan, H G, NX13019

    Morgan, H S, VX48036

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/406096Surname: MORGAN. Given Name(s) or Initials: H S. Military Service Number or Last Known Location: VX48036. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 13704.247002 Item: [2016.0049.38373] "Morgan, H S, VX48036

    Optical particle detection integrated in a dielectrophoretic lab-on-a-chip

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    The design and fabrication of a dielectrophoretic "lab-on-a-chip" device for bioparticle processing and counting is presented. The device consists of a multi-layer travelling wave dielectrophoretic electrode array for manipulating particles and/or fluids, micro channels for delivering samples, and optical fibres for counting particles and/or measuring their velocities. Single particles were detected optically using either light scattering or fluorescence emission. The technology described in this work is potentially applicable to a range of particulate diagnostic systems

    Morgan, H B (Henry Bidmead), SX9654

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    This record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/406080Surname: MORGAN. Given Name(s) or Initials: H B (HENRY BIDMEAD). Military Service Number or Last Known Location: SX9654. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 32353.246986 Item: [2016.0049.38357] "Morgan, H B (Henry Bidmead), SX9654

    Single Cell Impedance Cytometry for Identification and Counting of CD4 T-Cells in Human Blood Using Impedance Labels

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    Single cell microfluidic impedance cytometry has been used to identify cells at high speed, on the basis of their dielectric properties. However, there is no electrical analogue to a fluorescent label, meaning that it is not possible to identify subpopulations of cells. We demonstrate discrimination and enumeration of antigenically defined cell subpopulations using an alternating current (AC) impedance labeling method. Small antibody conjugated beads are mixed with cells and bind to the target population, changing the electrical properties of the target subset of cells. The principle of the technique is demonstrated by identifying and enumerating the CD4 T-lymphocyte subpopulation in human whole blood. The technique represents a simple method for detecting a subpopulation of cells within a heterogeneous mix. The impedance-based antibody identification method could form the basis of simple low-cost point of care diagnostic technologies

    Design and fabrication of travelling wave dielectrophoresis structures

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    The design and fabrication of a generic travelling wave dielectrophoretic separation system is presented. A range of technical issues have been addressed and resolved. These include the optimization of the electrical insulation and electrical contact between different electrode layers and the choice of materials. A new method for fabricating microfluidic liquid channels, the fluidic channel cover and the seal within the channel, as well as an effective sample introduction system has been developed. A complete particle handling and fractionation system has been fabricated and the functioning of the device demonstrated with latex particles

    Going Beyond Counting First Authors in Author Co-citation Analysis

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    The present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed

    Quantifying dielectrophoretic collections of sub-micron particles on microelectrodes

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    This paper presents a technique for measuring and quantifying the elelectrohporetic collection of sub-micron particles on planar microelectrode arrays. Fluorescence microscopy and video recording is used to measure the number of particles collecting on an electrode as a function of time for various experimental parameters, such as applied electrode voltage and frequency. Video images are processed using analytical methods that take advantage of the geometrical properties of the electrode array to extract quantitative information which is used to characterize the dielectric properties of particles. The time-dependent collection profiles can be chracterized by three parameters: the initial dielectrophoretic collection rate, the initial to pseudo-steady-state transition and the rise time. This method can be used asa general technique to characterize the dielectrophoretic properties of populations of sub-micron-scale particles
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