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Full-Text Articles in Physical Sciences and Mathematics
The Application Of Raman Spectroscopy As A Confirmatory Blood Test In The Presence Of Sodium Hypochlorite Cleaners In In Comparison With Presumptive Blood Tests, Aliea Anoshaa Afnan
The Application Of Raman Spectroscopy As A Confirmatory Blood Test In The Presence Of Sodium Hypochlorite Cleaners In In Comparison With Presumptive Blood Tests, Aliea Anoshaa Afnan
Legacy Theses & Dissertations (2009 - 2024)
Popular presumptive tests for blood include: Luminol, tetramethylbenzidine (TMB), leucomalachite green (LMG), phenolphthalein, and Hemastix® [3]. These presumptive tests have been reviewed with respect to their sensitivity, specificity, and DNA degradation. In this study, the aforementioned presumptive tests were subjected to bloodstains deposited on cotton contaminated with all-purpose bleach and compared with Raman spectroscopy as an application of a confirmatory blood test. Samples were tested for interference with the all-purpose bleach to determine the selectivity of the presumptive tests. Tetramethylbenzidine, leucomalachite green, and phenolphthalein all yielded inconclusive results when applied to a contaminated sample. Luminol and Hemastix® yielded a positive …
Fractional Comparison Of Arson Accelerants Using Advanced Distillation, Sarah Clickner
Fractional Comparison Of Arson Accelerants Using Advanced Distillation, Sarah Clickner
Legacy Theses & Dissertations (2009 - 2024)
Detection of accelerants is often critical in proving a fire was intentional. Establishing a fire was intentionally set is not an easy task and hinges on the preservation of accelerant present in fire debris. Various accelerants have previously been studied using the advanced distillation method to get fractional composition information. The resulting fractions from advanced distillations were compared to evaporation and burn samples to determine if there were any similarities.
Amyloid Fibril Polymorphism : Structure, Supramolecular Chiraliy And Spontaneous Interconversion, Dzmitry Kurouski
Amyloid Fibril Polymorphism : Structure, Supramolecular Chiraliy And Spontaneous Interconversion, Dzmitry Kurouski
Legacy Theses & Dissertations (2009 - 2024)
Specific protein aggregation has been linked to more than 25 severe human maladies including prion, Alzheimer's, and Parkinson's diseases. These important malfunctions are often referred to as 'conformational' disorders and result from the conversion of a normal isoform of a protein into a specific b-sheet rich polymeric amyloid form. This work elaborates a comprehensive characterization of amyloids and dedicated to the investigation of the fibril polymorphism using advanced microscopic tools, such as Atomic Force and Scanning Electron microcopies, together with several vibrational spectroscopy techniques, such as Raman, Infrared and Vibrational Circular Dichroism. A new type of protein folding-aggregation phenomenon, spontaneous …
Trace Element Analysis Of Environmental And Clinical Materials Using Novel Instrumentation Based On X-Ray Fluorescence Spectrometry : New Capabilities For Public Health Laboratories, Kathryn G. Mcintosh
Trace Element Analysis Of Environmental And Clinical Materials Using Novel Instrumentation Based On X-Ray Fluorescence Spectrometry : New Capabilities For Public Health Laboratories, Kathryn G. Mcintosh
Legacy Theses & Dissertations (2009 - 2024)
X-ray fluorescence (XRF) spectrometry is a well-established analytical technique for determining the elemental content of many different materials. XRF has long been used for public health applications, particularly for identifying lead-based paint hazards. The primary advantage of XRF over other atomic spectrometric techniques is that it is nondestructive. In addition, little sample preparation is required, so results are obtained rapidly and at low cost. The principal aim of this study was to characterize the utility and reliability of current XRF instrumentation for use in the environmental health sciences. Interest in the use of XRF for detecting lead in children's toys …