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Soil transference patterns on bras: Image processing and laboratory dragging experiments.
Forensic Sci Int
January 2016
Forensic Science Research Centre, Flinders University, GPO Box 2100, South Australia, 5001, Australia; Centre for Australian Forensic Soil Science, CSIRO Land and Water, Waite Road, Urrbrae, South Australia, 5064, Australia. Electronic address:
In a recent Australian homicide, trace soil on the victim's clothing suggested she was initially attacked in her front yard and not the park where her body was buried. However the important issue that emerged during the trial was how soil was transferred to her clothing. This became the catalyst for designing a range of soil transference experiments (STEs) to study, recognise and classify soil patterns transferred onto fabric when a body is dragged across a soil surface.
View Article and Find Full Text PDFDigital photography: a primer for pathologists.
J Clin Lab Anal
November 2004
Department of Pathology, MCV Campus of Virginia Commonwealth University, Richmond, Virginia 23298-0250, USA.
The computer and the digital camera provide a unique means for improving hematology education, research, and patient service. High quality photographic images of gross specimens can be rapidly and conveniently acquired with a high-resolution digital camera, and specialized digital cameras have been developed for photomicroscopy. Digital cameras utilize charge-coupled devices (CCD) or Complementary Metal Oxide Semiconductor (CMOS) image sensors to measure light energy and additional circuitry to convert the measured information into a digital signal.
View Article and Find Full Text PDFThe virtual blood film.
Clin Lab Med
March 2002
Department of Pathology, Medical College of Virginia, Hospitals of Virginia Commonwealth University, Richmond, Virginia, USA.
The computer and the digital camera offer unprecedented possibilities for improving hematology education, research, and patient service. Peripheral blood smear images of exceptional quality can be acquired rapidly and conveniently from the peripheral blood smear with a modern, high-resolution digital camera and a quality microscope. Digital cameras use CCD or CMOS image sensors to measure light energy and additional circuitry to convert the measured information into a digital signal.
View Article and Find Full Text PDFDelaminating myelin membranes help seal the cut ends of severed earthworm giant axons.
J Neurobiol
December 1997
Department of Physiology and Biophysics, University of Texas Medical Branch, Galveston 77555-0641, USA.
Transected axons are often assumed to seal by collapse and fusion of the axolemmal leaflets at their cut ends. Using photomicroscopy and electronmicroscopy of fixed tissues and differential interference contrast and confocal fluorescence imaging of living tissues, we examined the proximal and distal cut ends of the pseudomyelinated medial giant axon of the earthworm, Lumbricus terrestris, at 5-60 min post-transection in physiological salines and Ca2+-free salines. In physiological salines, the axolemmal leaflets at the cut ends do not completely collapse, much less fuse, for at least 60 min post-transection.
View Article and Find Full Text PDFOsmium tetroxide-potassium ferrocyanide intensification of a diaminobenzidine product obtained by photoconversion of a fluorescent label: a study of human neutrophil granules.
Biotech Histochem
July 1995
Department of Medical Laboratory Technology, University of Zimbabwe Medical School, Harare.
A diaminobenzidine posttreatment employing osmium tetroxide and potassium ferrocyanide was successfully used to intensify the diaminobenzidine stain formed by photoconversion of immunofluorescent labelling. Lactoferrin labelled granules became visible following the photoconversion process. Adequate diaminobenzidine staining was obtained after irradiating the cytospin preparations with ultraviolet light for 30-40 min.
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