Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"crime scenes"”.
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Evaluation of collection protocols for the recovery of biological samples from crime scenes
… the methods used to recover DNA evidence from crime scenes have seen little development. This research has developed wetting agents which can be incorporated into most conventional swabbing protocols and has the potential to significantly improve both the recovery rate and stability of the DNA …
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Transnational Crime Scenes and Travelling Detectives: Space and Movement in Crime Drama Series 2017-2023
… of space and movement in transnational crime drama series between 2017 and 2023. Focused on the timeframe between Brexit and the Covid pandemic, it argues that a significant shift within the crime genre is well underway. Following European integration, the formerly national genre had …
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Sensitivity and Species Specificity of Bisulfite Modification and Pyrosequencing Technology Used to Identify Tissue-Specific DNA Methylation Patterns in Common Biofluids Foudn in Crime Scenes
… criminal cases, it is crucial to reconstruct the crime scene and/or determine the nature of the crime. Identifying the different biofluids found at a crime scene can help shed light on these aspects of forensic casework. Recently, DNA methylation has been used as a means of identifying biological …
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Analysis of the composition of latent fingermarks by spectroscopic imaging techniques.
… the identity of an individual at many crime scenes. There are numerous enhancement techniques used to develop fingermarks on a range of deposition surfaces. Despite this, there is a need for further intelligence to be gained in situations where fingermarks retrieved at crime scenes do …
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Classification of Toolmark Surfaces on Zipper Teeth
… cases in which zipper teeth were found at crime scenes prompted this study. Brass zipper teeth manufactured by YKK were taken from 20 pairs of jeans and studied using a Reichert comparison microscope at 4X power. Photographs were taken and over 750 comparisons made. It was found that the …
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Interpreting Forensic Trace Evidence using Multi-Elemental and Spectroscopic Data
… recovered from suspects’ clothing and from crime scenes; trace evidence such as glass, tapes, fibre and inks) using spectroscopic data.
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Forensic Discrimination, Age Estimation, and Spectral Optimization For Trace Detection of Blood On Textile Substrates Using Infrared Spectroscopy and Chemometrics
… spectroscopic detection of biological fluids at crime scenes. Identifying these fluids using spectroscopy may replace existing presumptive chemical-based tests that have disadvantages (i.e., toxicity and sensitivity to light). The feasibility of remote spectroscopic detection to visualize blood …
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Evaluating the use of smartphone measurement applications for crime scene documentation
… to whether or not smartphones could be used by crime scene investigators. Crime scene documentation is a time-consuming task when using a standard tape measure compared to advanced techniques (such as 3D scanners). However, these advanced techniques are expensive and take time to set up. …
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The synthesis and characterization of alginate-melanin hydrogels for applications in forensic science
… research to investigate skin behavior at crime scenes. We present alginate-melanin hydrogels as candidate forensic skin simulants, characterizing their optical and mechanical properties. We investigated encapsulated and crosslinked hydrogel systems. Synthetic melanin was modified by …
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The Degree of Certainty System in Written Spanish in Mexico
… verb forms under study were collected from 201 crime scenes. A total of 169 were cases of single homicide. </p>
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The development of an electrochemical sensing device for controlled drugs.
… test when attending clandestine drug manufacture crime scenes. Whilst many techniques exist at their disposal - such as chemical colour test reagents and immunoassays - these methods are at best semi-quantitative and often subject to false positives. Electrochemical methods of detection offer a …
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Assumptions underlying behavioral linkage revisited: A multidimensional approach to ascertaining individual differentiation and consistency in serial rape
… only in recent years. In order for behavioral crime linking to be validated, two base assumptions must be met: individual differentiation (i.e., that offenses committed by one offender will be distinctly different from those committed by another offender) and consistency (i.e., that a degree of …
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Applications of UV-visible spectral imaging in forensic science
… presumptive screening test for blood at crime scenes.
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Shoeprint image noise reduction and retrieval
… into contact with a surface. People committing crimes inevitably leave their shoe marks at the crime scene. A study suggests that footwear impressions could be located and retrieved at approximately 35% of all crime scenes. More and more shoeprint images have been collected, leading to a few of …
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Improvement and Development of Analytical Forensic Methods: Arson Investigation and Drug Detection in Fingerprints and Hair
… to the analysis of evidence collected from crime scenes. As far back as the 6th century people were using forensics to solve crimes. Since then the science behind forensic science has increased exponentially with new methods being researched and developed. This research aims to address two …
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Non-destructive analysis of popular cigarette brands utilizing attenuated total reflectance (ATR) and diffuse reflectance infrared fourier transform spectroscopy (DRIFTS) and chemometrics
… them to being found in many areas, including crime scenes. Since cigarettes are in proximity with biological fluid such as saliva, DNA analysis may be the first method used for forensic analysis. However, other methods of analysis, such as analysis of the various components that make up a …
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Trace Evidence Analysis of Forensic Samples Using Inductively Coupled Plasma
At many crime scenes, little evidence is left behind; thus, the more tools available for the analysis of minute samples, the better. For instance, trace elemental impurities are not regulated in many commercial materials and thus could be a unique identifier. One of the best techniques for …
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Determining the impact of carrion decomposition on soil microbial activity levels and community composition.
… community profiles obtained from evidence or crime scenes to individuals and vice versa. Profiling microbial communities associated with cadaver decomposition may provide useful information concerning post-mortem intervals and aid in the identification of clandestine graves. Four experiments …
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Forensic Analysis of Trace Evidence Fibers and Drugs of Abuse In Biological Matrices Using Chromatographic and Mass Spectrometric Methods
<p>Textile fibers found at crime scenes as trace evidence often provide leads or confirmations in criminal investigations. The development of analytical techniques for forensic discrimination of fibers by micro-extractions of dyes followed by liquid chromatography (LC) or capillary electrophoresis …
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Clustering Single-Cell Electropherograms by Genotype Through Unsupervised Machine Learning
… whether a collection of cells obtained from a crime scene supports the hypothesis that a person of interest was present. The primary challenge is that cell samples collected at crime scenes typically contain material from an unknown number of genetic sources in an unknown mixture ratio. The …
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