Chemical enhancement of soil based footwear impressions on fabric

This study investigates the enhancement of footwear impressions prepared with soils from different locations on a variety of fabric surfaces with different morphology. Preliminary experiments using seventeen techniques were carried out and the best responding reagents were evaluated further. Results indicated that the soils investigated (a cross-section of soils from Scotland) are more likely to respond to reagents that target iron ions rather than calcium, aluminium or phosphorus ions. Furthermore, the concentration of iron and soil pH did not appear to have an effect on the performance of the enhancement techniques. For the techniques tested, colour enhancement was observed on all light coloured substrates while enhancement on dark coloured fabrics, denim and leatherette was limited due to poor contrast with the background. Of the chemical enhancement reagents tested, 2,2'-dipyridil was a suitable replacement for the more common enhancement technique using potassium thiocyanate. The main advantages are the use of less toxic and flammable solvents and improved clarity and sharpness of the enhanced impression. The surface morphology of the fabrics did not have a significant effect on the enhancement ability of the reagents apart from a slight tendency for diffusion to occur on less porous fabrics such as polyester and nylon/lycra blends.     

Empathy through Animals: Generating Evidence‐based Outcomes for Empathy Development

Low empathy is a prominent trait associated with juvenile offenders. Many juvenile justice service providers strive to reduce risk factors associated with juvenile delinquency, while producing evidence‐based outcomes for targeted programming. The Youth Services Agency (YSA) Nature Center provides empathy development through animal therapy to adjudicated youth. This project generates evidence‐based outcomes and quantifies the impact of animal therapy on empathy development of adjudicated youth at the YSA Nature Center by utilizing self‐assessment tools. Results indicated trends that animal therapy increases the emotional empathy of YSA clients. Qualitative evidence implied that animal therapy had notable therapeutic value to YSA clients.     

The Double Life of Duke of Somerset v Cookson,or a Legal Excavation of the Corbridge Lanx

Duke of Somerset v Cookson (1735) occupies an important place in English legal history as a leading authority for Chancery jurisdiction to order specific delivery of movable property where an award of damages would be inadequate. The property at issue was the Corbridge lanx, now in the British Museum, but then claimed as treasure trove by the duke of Somerset as lord of the manor of Corbridge. This paper re-examines Cookson as the first reported English decision relating to treasure trove, and uses later treasure trove claims by the duke of Somerset's successors to the manor of Corbridge, the dukes of Northumberland, to shed fresh light on the 1735 decision and on the development of treasure trove practice from the eighteenth century onwards.     

The Impact of War on Calorie Food Demand in Bangladesh

Daily per capita calorie intake in Bangladesh averaged almost 2,100 (kilo)calories in the 1960s but fell to 1,840 in 1972 following the war of independence in 1971, and only by 1987 did it reach 2,000 again. This article examines the long-run relationship between per capita income, food prices and per capita calorie intake using aggregate data for Bangladesh for 1962–97 and the recent cointegration procedure of Johansen et al., which permits structural breaks. Results show that a long-run relationship exists and that the war reduced average calorie intake permanently by 10 per cent. Impulse responses show that income Granger-causes calorie intake but not vice versa.     

Fault-lines in community treatment order legislation

This article discusses the major tension points in the legislation that authorises involuntary outpatient treatment for mental disorder in six British Commonwealth jurisdictions. Particular attention is paid to the role of competence (or capacity) principles in the ruling legal criteria, to the precise powers of community treatment conferred, and to the potential impact of the legislation on clinicians' liability concerns. It is argued that the conferral on clinicians of a power to administer 'forced medication' in community settings is not required to promote active use of involuntary outpatient care, and that such a power should not be provided. The article concludes with discussion of the reasons why community treatment orders are used more frequently in some jurisdictions than others.     

Accuracy of facial soft tissue thickness measurements in personal computer-based multiplanar reconstructed computed tomographic images

The purpose of this study was to determine the precision and accuracy of facial soft tissue measurement using personal computer (PC)-based multiplanar reconstructed (MPR) computed tomography (CT) images and to evaluate the effect of the various CT scanning protocols on the facial soft tissue thickness measurement. Thirteen different CT imaging protocols were used to image a cadaver head. MPR reformations and three-dimensional (3D) reconstructions viewed on a laptop PC were used to make measurements at six specific sites on each set of images. These measurements were compared to physical measurements at the same sites. Increasing the slice thickness resulted in decreased image quality. Within the same slice thickness, increasing the pitch ratio in the spiral mode, resulted in decreasing image quality. The image quality of conventional CT scanning was relatively poorer than that of the spiral CT scanning. However, the mean deviation from the physical measurement was within 0.43 mm in every instance. This mean deviation was quite small and clinically acceptable for measuring the soft tissue thickness of the facial area. PC-based MPR CT images of the face using routine scanning CT protocols can be used to accurately measure soft tissue thickness in the facial region. However, for more fine and accurate data collection, scanning protocols with slice thicknesses less than 5mm, and a spiral/helical mode pitch less than 2:1 are recommended.     

Optimization of the separation of organic explosives by capillary electrophoresis with artificial neural networks

The separation of 12 explosives by capillary electrophoresis was optimized with the aid of artificial neural networks (ANNs). The selectivity of the separation was manipulated by varying the concentration of sodium dodecyl sulfate (SDS) and the pH of the electrolyte, while maintaining the buffer concentration at 10 mM borate. The concentration of SDS and the electrolyte pH were used as input variables and the mobility of the explosives were used as output variables for the ANN. In total, eight experiments were performed based on a factorial design to train a variety of artificial neural network architectures. A further three experiments were required to train ANN architectures to adequately model the experimental space. A product resolution response surface was constructed based on the predicted mobilities of the best performing ANN. This response surface pointed to two optima; pH 9.0-9.1 and 60-65 mM SDS, and pH 8.4-8.6 and 50-60 mM SDS. Separation of all 12 explosives was achieved at the second optimum. The separation was further improved by changing the capillary to an extended cell detection window and reducing the diameter of the capillary from 75 microm to 50 microm. This provided a more efficient separation without compromising detection sensitivity.     

Behavioral and Verbal Responses of Unabused Externalizing Children to Anatomically Detailed Doll Interviews

To see if unabused children with externalizing behavior disorders display more sexual behaviors and verbalizations than other children in their interactions with anatomically detailed dolls, sixteen 3- to 6-year-olds were compared with 44 nonexternalizing controls. A five-phase structured, detailed interview, and comprehensive coding of videotapes by external raters, was completed on 17 behaviors and verbalizations. As would be expected, externalizing children exhibited more overall activity than non-externalizing children. Also, externalizing children exhibited more behavioral sexual aggression during the body inventory phase, but no other differences in sexual behaviors or verbalizations occurred. Results suggest that most normative data on AD dolls generalize to externalizing children.     

Alternative direct-to-amplification cell lysis techniques for forensically relevant non-sperm cells

While efforts have been made to reduce the pervasive backlog of sexual assault evidence collection kits, the actual laboratory process remains very time-consuming due to the requirement of a differential lysis step before DNA purification, as well as intricate mixture analysis towards the end of the DNA workflow. Recently, an alternative, direct-to-amplification sperm lysis method (using 1 M NaOH) was identified. However, a direct cell lysis method for non-sperm cells has not been identified yet. Thus, the primary objective of this work was to find an alternative method that is quick, inexpensive, and does not require multiple purification steps for the lysis of non-sperm cells in sexual assault samples. In this study, vaginal swab samples were lysed with the control method, prepGEM™, as well as six alternative reagents: alkaline buffer with 25–200 mM NaOH, high-salt stain extraction buffer, modified radioimmunoprecipitation assay (RIPA) buffer, mammalian protein extraction reagent (M-PER™), digitonin buffer, and urea/thiourea buffer. Quantification using Quantifiler® Trio of vaginal and semen lysates revealed that the alkaline (25 mM NaOH) and M-PER™ methods were efficient for the lysis of vaginal epithelial cells without substantial sperm cell lysis. Following quantification, analysis of STR profiles from vaginal lysates revealed that the M-PER™ method showed promising results across all metrics examined, including the percentage of detected STR alleles, mean peak heights, peak height ratio, and interlocus balance. Thus, this method was recommended as an alternative to the traditional differential lysis method for non-sperm cells given its ability to produce amplification-ready lysates without any DNA purification step.