Inom Polisen finns ett behov av att renodla verksamheten, då de med åren fått ökade administrativa kostnader. Ett projekt startades inom Polisen och Statens kriminaltekniska laboratorium, där all ekonomi- och personaladministration ute på myndigheterna samlades på ett och samma ställe i ett servicecenter förlagt till Linköping. Syftet med studien är att utvärdera hur måluppfyllelsen för de mål som sattes upp för projektet upplevs. Studien är av kvalitativ karaktär, med en fallstudieliknande ansats, där 18 intervjuer genomfördes med de anställda på servicecentret, samt flertalet ur projektets styrgrupp. Resultatet av studien är att organisationen har kommit långt med måluppfyllelsen, men att man inte har nått riktigt ända fram då studien visar att åtta av elva mål är helt uppfyllda i nuläget. Tre mål är alltså ännu inte helt uppfyllda, vilket kan bero på att många av målen är otydliga, kan tolkas olika och inte är så väl förankrade hos de anställda. Att utgå från några kriterier för hur mål bör formuleras tros förbättra måluppfyllelsen, men då organisationen ändå har lyckats uppfylla målen relativt väl är det ingen förutsättning för att lyckas. Då centret ännu inte är helt färdigt, utan på några års sikt skall utökas till att omfatta alla polismyndigheter i landet, tros många mål leva kvar och en bättre måluppfyllelse uppnås allt eftersom fler myndigheter ansluter sig till centret. / The Swedish Police has increased its administrative costs during the years making the ordinary police work suffer. A project started within The Swedish Police and The Swedish National Laboratory of Forensic Science. The project aimed to establish a shared service center for personnel and business administration. The aim of this study is to evaluate whether the goals of the project have been reached or not. The study has a qualitative approach and is mainly based on 18 interviews with the employees at the shared service center and the directors of the four authorities. The result of the study is that the organization has come a long way in reaching the goals, and has today reached 8 out of the 11 goals for the project. The reasons for there being 3 goals left to reach may be that the goals are unclear and not so well anchored among the employees. Using criterias in formulating goals is thought to make it easier to fulfil the goals. Since the organization has fulfilled the goals quite well even though it has not followed all of the criterias, there is no guarantee for success to follow the criterias in formulating goals. Since the shared service center is not yet complete, but should in a few years include all police authorities in the country. Some goals should still be used and the goals will probably reach better goal performance as more authorities are added to the shared service center.

This dissertation consists of five chapters, each of which focuses on various aspects of the forensic discipline of Firearms and Toolmarks. This dissertation for the most part attempts to highlight the exposure of projectiles to blood and the degradation over time of the fine detail, which is necessary for microscopic examination. This study should be of interest to students and qualified role-players in forensic science, the criminal justice system, the law community and the general population globally. Chapter 1 identifies the research problem and the necessary steps that were taken to ensure that the research methodol.ogy applied is relevant and reliable. Chapter 2 focuses on various factors that have to be considered in damage to bullets and investigation procedures that should be followed to ensure that physical evidence is preserved for submitting to a forensic science laboratory. Chapter 3 investigates the degradation effects of fired bullets exposed to various materials in a laboratory environment and the timelines associated with the degradation effects. Chapter 4 evaluates the examination procedures for fired bullets and the contributing factors that may influence the striation marks on bullets needed for microscopic examination. It also examines the scientific method used for firearm identification, and explores the admissibility of physical evidence in a court of law. The final chapter, Chapter 5 discusses the findings and recommendation of this research study. / Criminology and Security Science / M. Tech. (Forensic Investigation)

Ample research has been published regarding the effects of environmental decomposition on volatile organic profiles of tissue, however literature concerning the volatile organic profiles of thermally degraded tissue is limited in quantity and scope. The purpose of this study was to investigate the effects of temperature on the headspace volatile organic compounds produced by muscle, subcutaneous fat, skin, and punch biopsy samples. The majority of the compounds for each tissue type were alcohols and aldehydes. Compounds were extracted using solid phase microextraction and identified using gas chromatography/mass spectrometry. Compounds such as nonanal, 1-octen-3-ol, octanal, and hexanal were present in the volatile organic compound profile for many tissue types at a majority of the temperatures, particularly from 150°C to 300°C. 2-pentylfuran was the most abundant component in the profile of skin samples from 150°C to 300°C. The profile of fresh subcutaneous fat had numerous branched alkanes, while thermally degraded subcutaneous fat profiles were comprised mostly of aldehydes and alcohols. The profile of muscle was primarily composed of alcohols and aldehydes up to 300°C, whereas the most abundant compound at 350°C was trimethylpyrazine. There were consistent compounds identified among each tissue group. The abundance patterns of alcohols and aldehydes over increasing temperatures differed for each tissue type. Analysis of the data gathered in this study indicates that muscle, subcutaneous fat, and skin contribute characteristic compounds, such as alcohols and aldehydes, to the profile of the punch biopsy samples. The findings further suggest that temperature affects the volatile organic profile of tissue in terms of the compounds identified and the abundance trends of certain compounds.

Doctor of Philosophy / Curriculum and Instruction Programs / Tweed R. Ross / John R. Staver / The purpose of this study was to research, develop and validate a one-semester course for the general education of university undergraduates in forensic chemical education. The course outline was developed using the research and development (R&D) methodology recommended by Gall, Borg, and Gall, (2003) and Dick and Carey, (2001) through a three step developmental cycle. Information was gathered and analyzed through review of literature and proof of concept interviews, laying the foundation for the framework of the course outline. A preliminary course outline was developed after a needs assessment showed need for such a course. Professors expert in the area of forensic science participated in the first field test of the course. Their feedback was recorded, and the course was revised for a main field test. Potential users of the guide served as readers for the main field test and offered more feedback to improve the course.

Orientador: Lea Maria Leme Strini Velho / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Geociencias / Made available in DSpace on 2018-08-11T23:13:21Z (GMT). No. of bitstreams: 1 Fachone_PatriciadeCassiaValerio_M.pdf: 583525 bytes, checksum: 76ab55f604e3d46e6ab50852958fc55b (MD5) Previous issue date: 2008 / Mestrado / Mestre em Política Científica e Tecnológica

A two-step protocol has been devised as a rapid and selective alternative to conventional differential extraction techniques with an increased recovery of DNA. The protocol involves pressure cycling with the Barocycler® NEP 2320 from Pressure Biosciences. Inc. in alkaline conditions for epithelial cell lysis and removal. This step is followed by alkaline lysis at 95º C for extraction of sperm cell DNA. At 1:1 or 2:1 female to male cell ratios, high selectivity and complete separation can be achieved. But at higher ratios, male allelic dropout is observed. This protocol has been modified to generate a clean male profile at a 20:1 cell ratio through optimization of NaOH concentration and inclusion of an additional pressure cycling step. Validation studies have been performed to assess the efficiency of this method under various conditions. An additional immunomagnetic cell capture pretreatment allowed for nearly complete separation at cell ratios of up to 200:1.

Normal human urine contains many anions and cations. Ionic concentrations in urine have classically been determined by spectrophotometry of color reactions, flame emission spectrophotometry, atomic absorption spectrophotometry, high performance liquid chromatography, or potentiometry with ion-specific electrodes. Capillary ion electrophoresis (CIE) is a form of capillary electrophoresis which uses the differential electrophoretic mobility of ions to perform a separation of an ionic mixture. Various salts can be added to urine specimens to abnormally elevate ionic concentrations and interfere with either immunoassay urine drug screening procedures or gas chromatographic/mass spectrometric confirmation techniques. Application of CIE for the direct detection of endogenous anions and anionic adulterants in human urine specimens was the purpose of this investigation. CIE was performed using a Waters Quanta 4000 Capillary Electrophoresis System with either direct or indirect ultraviolet absorption detection at 254 nm. CIE of 30 random normal urine specimens and 21 urine specimens suspected of adulteration was performed. Duplicate aliquots were assayed by CIE and by colorimetric technique for nitrite. Sixteen specimens had elevated concentrations of nitrite and/or nitrate. The correlation coefficient between nitrite CIE and colorimetric results was 0.9895. Three specimens had detectable concentrations of chromate and were suspected of being adulterated with "Urine Luck," an adulterant found to contain chromate. Two specimens suspected of being adulterated with bleach were found to only contain chloride, sulfate, and phosphate. CIE is applicable to forensic analysis of urine anion concentrations. CIE can easily quantitate numerous endogenous anions and offers a method to detect and/or confirm anion adulteration of urine specimens.

L’identification des auteurs d’incendies criminels où un accélérant a été utilisé demeure à ce jour un domaine de recherche en développement. Les traces biologiques reines pour l’identification de personnes comme l’ADN et les traces papillaires sont généralement détruites, donc rarement recherchées. Pourtant, lier l’auteur des faits au lieu de l’incendie est un réel besoin. Ce lien pourrait être établi par l’inférence de source des traces d’accélérant détectées sur les lieux avec une source potentielle souvent amenée par l’enquête comme des objets saisis en possession du suspect (vêtements), un jerrican ou encore des prélèvements effectués sur ses mains. Dès lors, la question qui se pose consiste à déterminer si les traces d’accélérant détectées sur les lieux et les traces détectées sur l’élément de comparaison partagent une source commune. Ainsi, l’inférence de source de l’accélérant constitue une alternative au manque de traces matérielles de sorte à fournir des éléments de preuve à la suite d’un incendie volontaire. En ce sens, cette recherche propose une approche chimiométrique non ciblée pour l’inférence de source de liquides inflammables en science forensique. Cette approche a été appliquée à un échantillonnage conséquent d’essences non altérées et à un échantillonnage réduit d’essences altérées de 0 à 99% par évaporation et par combustion. L’évaluation des résultats a validé l’hypothèse selon laquelle il est possible de lier des échantillons d’essences altérés ou non, par évaporation ou combustion, indépendamment du mode et du degré d’altération. / The identification of arsonists when an accelerant was used is still a challenging and ongoing research area. Golden standards in forensic human identification such as DNA and fingermarks are usually destroyed during the fire, hence not often looked for. It is yet obvious that the need to link the perpetrator to the arson site exists. This link could be made through a source inference process of the traces of an accelerant detected on site. These traces could be compared with a potential source often brought by the police investigation such as seized items in possession of a suspect (clothes), a jerrican or even hand sampling. Thenceforward, the question arising would be to determine if the traces of an accelerant from unknown source share a common source with the seized item. Thus, the source inference of accelerants constitutes an alternative to the lack of material traces in order to provide evidence in arson cases. To tackle this question, the present research proposes an untargeted chemometric approach for the source inference of ignitable liquids in forensic science. This approach was applied to a large dataset of unaltered gasoline samples and to a reduced one of altered samples by evaporation and combustion between 0 and 99%. The evaluation of results shows that it is possible to link gasoline samples altered or not by evaporation and combustion independently of the alteration mode and degree..

Sustainability and environmental responsibility is increasingly growing in importance. Solving the environmental problems of the planet will one day become the responsibility of future scientists. For this reason, and with the introduction of new chemical legislation (REACH) driving change it is essential that current students are given a broad introduction to sustainability and environmental responsibility in order to equip them as graduates for future practice in the chemical sciences. At the University of Bradford the aim is to teach sustainability and environmental responsibility by embedding it throughout the entire chemistry curriculum rather than teaching it in standalone lectures. Once this has been established within chemistry it is expected that this will potentially provide a template for other areas of laboratory science within the university. In order to achieve the aim of this project, students, staff and potential employers tookpart in surveys with a view to inform curriculum development. Examples of best practice were sought and used as guidance for the development of directed learning activities for use as post lab questions and utilisation of the twelve principles of green chemistry. Green chemistry metrics were applied to undergraduate experiments to test how well they would work in terms of ease of use, applicability and judging ¿greenness¿. It was found that these were not very effective for use within an undergraduate laboratory due to applicability and judging ¿greenness¿, however this work highlighted other areas for improvement. As a result of this work an environmental assessment metric system was developed for use within an undergraduate setting. / Ecoversity at the University of Bradford

Yes / Automatic facial age progression (AFAP) has been an active area of research in recent years. This is due to its numerous applications which include searching for missing. This study presents a new method of AFAP. Here, we use an Active Appearance Model (AAM) to extract facial features from available images. An ageing function is then modelled using Sparse Partial Least Squares Regression (sPLS). Thereafter, the ageing function is used to render new faces at different ages. To test the accuracy of our algorithm, extensive evaluation is conducted using a database of 500 face images with known ages. Furthermore, the algorithm is used to progress Ben Needham’s facial image that was taken when he was 21 months old to the ages of 6, 14 and 22 years. The algorithm presented in this paper could potentially be used to enhance the search for missing people worldwide.