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Journal of Forensic Identification

JFI Article Abstracts from 2022 are available to view here at this time

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JFI Abstracts from 2022

Issue 1: January - March 2022 

Letter to the Editor

Author(s): Kent, Terence
Type: Letter to the Editor
Published: 2022, Volume 72, Issue 1, Page 001
Abstract: Re: Evaluation of the Effectiveness of Lumicyano in the Recovery of Latent Prints When Compared to Rhodamine 6G Liquid Dye Stain Journal of Forensic Identification 2021, 71 (4), 2021

Probing the Formation and Characteristics of Downward Cast-off and Cessation Patterns

Author(s): Phua, Zai Rong; Hauw, Jie Boon
Type: Technical Note
Published: 2022, Volume 72, Issue 1, Page 004
Abstract: In bloodstain pattern analysis, the classification of bloodstains is key to shedding light on the mechanisms involved in bloodletting events. In this study, an experimental device that could swing forward and downward was constructed to produce the characteristics and quantitative information from the resultant patterns. The bloodstains were observed to be distributed in broadly three regions: The upper and central regions had spatter stains progressively changing in shape from circular to elliptical down the target, in a linear or curvilinear fashion, primarily as a result of cast-off. The lower region had spatter stains of less than 1 mm, usually deposited in a horizontal spread because of the cessation effect. We found that the height of the patterns increased with the swing speed and volume of blood that was used. In our experimentation, a high-speed camera proved to be useful in facilitating the visualization of the swing dynamics and bloodletting process. This provided a better understanding of the release of blood from an object‘s end (formation of ligament and droplets) when surface tension effects were overcome.

Who Actually Discovered Fingerprint Powders?

Author(s): Claveria, Sergi
Type: Article
Published: 2022, Volume 72, Issue 1, Page 022
Abstract: The Denver Crime Laboratory Latent Print Unit recently compared the one-step fluorescent cyanoacrylate product, Lumicyano, to cyanoacrylate fuming followed by a liquid dye stain for the recovery of latent prints. Evidence items processed by cyanoacrylate fuming followed by a liquid dye stain consistently showed better results in terms of contrast and additional ridge detail developed. Because of the results of this evaluation, Lumicyano is currently not authorized for use at our lab.

Features of the Friction Ridge Skin: Attributes, Diagnosticity, and Limitations

Author(s): White, Alice V.
Type: Article
Published: 2022, Volume 72, Issue 1, Page 033
Abstract: The volar surface of hands and feet display an array of diagnostic features that exhibit both macroscopic and microscopic morphometric attributes. The macroscopic attributes are typically developmentally stable in the human population, which means these features can be exploited to determine which part of the hand or foot is represented in an impression and the distal orientation of an impression. The microscopic attributes are often subject to stochastic effects during embryological development or acquisition after birth. As a result, these smaller features can be combined with the macroscopic features to determine the ultimate utility of an impression and support source conclusions. Although the diagnosticity of each macroscopic and microscopic feature has theoretical constraints based on the influence of developmental stability and developmental noise, there are also biological constraints to the longevity of each feature and sources of distortion that affect the recording of the features in an impression. This article sheds light on the various features of the friction ridge skin, the attributes of each feature, the expected usefulness of these features for establishing search parameters, the expected usefulness in establishing identity, and common sources of variation in appearance of each feature. This article also illuminates areas where additional research would benefit the friction ridge community.

Back to Basics

Author(s):Siegel, Sandy, CLPE
Type: Back to Basics
Published: 2022, Volume 72, Issue 1, Page 130
Abstract:
Funny finds from all over in their own words.