Advances in Fingerprint Technology.pdf

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Various oxidative and bacteriological changes occur after sebum is excreted. Lipolysis by enzymes derived from the epidermis or bacteria present in skin surface debris from human skin has a tendency to break down triglycerides and methyl esters. 54 That particular study reported that, in ether, triolein and tristearin were converted primarily to free fatty acids and 1,2-diglycerides and only trace amounts of 1,3-diglycerides and monoglycerides. This evidence leads to the conclusion that the majority of free fatty acids present in sweat originate from the hydrolysis of sebum triglycerides. Evidence of varying degrees of bacterial lipolysis has been offered for Corynebacterium acnes, 55,56 staphylococci, 57 Pityrosporum ovale, 58 Pityrosporum acnes, Pityrosporum granulosum, 59 Micrococcaceae, and propionibacteria. 60 Several studies have shown that treatment of skin with antibiotic compounds (e.g., clindamycin) reduced bacterial populations and led to a concurrent decrease in free fatty acids. 61-63 However, one study found that treatment with neomycin failed to affect the C. acnes population. 64 It is likely that certain bacteria, such as C. acnes, are present within the hair follicles and would be inaccessible to topical antibiotics. Chemical Composition of Sebum There is a considerable variety of organic compounds present in sebum. Several factors can influence a particular individual’s sebum profile, including diet and genetics. It is possible that each person may have a unique scent signature, as demonstrated by the ability of certain breeds of dogs to track humans over wide areas. In addition, in animals, certain lipids may function as a means of communication. One study determined that in certain species, short-chained aliphatic acids were found to act as pheromones. 65 These compounds also allow animals to recognize members of their own social group. It is possible that a similar situation was once present in humans; however, modern hygiene practices may have diminished our ability to recognize the signals. In fact, in humans, sweat has to be broken down bacterially before it acquires a detectable, characteristic odor. A summary of sebum composition by lipid class is presented in Table 3.5. Fatty Acids Hydrolysis of human sebum results in the formation of a mixture of fatty acids. The amount of free fatty acids in sebum shows considerable variation, but averages between 15 to 25%. They are derived primarily from the hydrolysis of triglycerides and wax esters. It has been proposed that as the amount of liberated free fatty acids increases to a certain concentration, the pH drops sufficiently to inhibit bacterial lipases responsible for their production. 64 It has been reported that patients with acne have elevated levels of free fatty acids, typically greater than 30%. 71 It has also been observed that free fatty
Table 3.5 Summary of Sebum Composition Downing et al. 66 Lewis and Hayward 67 Haahti 68 Nicolaides and Foster 69 Felger 70 Nordstrom et al. 71 Goode and Morris 3 Darke and Wilson 72 Glycerides 43.2 46.4 42.6 31.7 35.4b 16.1 33 30.2c Fatty acids 16.4 16.0 16.2 29.6 27.2b 33.0 30 22.0 Wax esters 25.0 21.5 24.2a 21.8 22.6 25.3 22 29.3d Cholesterol 2.1 2.9 — 3.3 2.5 2.0 2 — esters Cholesterol 1.4 1.8 1.4 2.4 0.7 3.8 2 1.1 Squalene 12.0 11.4 15.6 12.8 11.6 19.9 10 17.4 a This value is for both wax and cholesterol esters. b The differences between these and other values listed are more than likely caused by individual differences in the degree of lipolysis of triglycerides by bacterial lipases. c This value includes cholesterol esters. d This value includes a minor contribution from diglycerides.
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Advances in Advances Fingerprint Te
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Advances in Fingerprint Technology
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Preface The first edition of this b
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Acknowledgments We gratefully ackno
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Table of Contents Preface Acknowled
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History and Development of Fingerpr
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Figure 1.2 Basic fingerprint patter
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Figure 1.3 Portion of the prehensil
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Figure 1.4 Elliptical whorl. Theory
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The bricks, carefully laid and accu
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the megalithic builders, including
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made most of them. These “identif
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Figure 1.6 Nehemiah Grew. (Drawn by
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Figure 1.7 Right palm imprint in pl
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By kindly words of persuasion a ref
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Loop: Now if this oblique stripe by
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Figure 1.11 Dr. Ivan Vucetich. (Dra
Page 38 and 39: Sir Edward Henry and Sir William He
Page 40 and 41: in charge he undoubtedly supported
Page 42 and 43: 1. Finding finger imprints on prehi
Page 44 and 45: Faulds edited seven issues of a fin
Page 46 and 47: much of his inspired research. For
Page 48 and 49: to the unrelenting efforts of Steeg
Page 50 and 51: and gathered around him a nucleus o
Page 52 and 53: I find that portions of palm imprin
Page 54 and 55: Identification of Latent Prints ROB
Page 56 and 57: Without it, no amount of further la
Page 58 and 59: work will quite often fare badly un
Page 60 and 61: Figure 2.3 Polygon method. Overlay
Page 62 and 63: Experience and Skill Although the t
Page 64 and 65: The initial identification of the l
Page 66 and 67: D5 D6 D7 I2 D8 D9 D10 No No No Reco
Page 68 and 69: D11 I4 No D12 D11 I5 D12-1 D7 D12-2
Page 70 and 71: D14 I7 D16 C3 D11 D14-2 D7 D14-3 C2
Page 72 and 73: Figure 2.7 Example of pressure dist
Page 74 and 75: 9. Mairs, G., Novel method of print
Page 76 and 77: DNA From Latent Prints DNA From Blo
Page 78 and 79: Figure 3.1 A schematic diagram show
Page 80 and 81: Figure 3.3 A schematic diagram of t
Page 82 and 83: (5 to 12 µg/L), bromide (0.2 to 0.
Page 84 and 85: electrophoresis (SDS-PAGE) include
Page 86 and 87: Table 3.3 Anatomical Variation in t
Page 90 and 91: acid content can change with time i
Page 92 and 93: are of sebaceous origin. 82 Approxi
Page 94 and 95: Table 3.7 Changes in Surface Lipid
Page 96 and 97: gland’s activity. The more active
Page 98 and 99: content. 108 Palmitic acid was foun
Page 100 and 101: Figure 3.4a A chromatogram of a fin
Page 102 and 103: various lipid classes found in a la
Page 104 and 105: of DNA using RFLP. 130 No adverse e
Page 106 and 107: was later found to be caused by the
Page 108 and 109: 17. Seutter, E., Goedhart-De Groot,
Page 110 and 111: 52. Downing, D. T., Strauss, J. S.,
Page 112 and 113: 85. Summerly, R., Yardley, H. J., R
Page 114 and 115: 120. Duff, J. M. and Menzel, E. R.,
Page 116 and 117: 149. Kloosterman, A., Application o
Page 118 and 119: Coumarin 540 Dye Staining Method An
Page 120 and 121: visualization of latent fingerprint
Page 122 and 123: White powder Dolomite, starch powde
Page 124 and 125: Fluorescein solution (in methanol/w
Page 126 and 127: Notes: Dissolve the MoS 2 in the di
Page 128 and 129: 4. Avoid inhaling any iodine fumes
Page 130 and 131: CN CN CN A - A - CH2 C COOR CH2 C C
Page 132 and 133: Large vacuum chambers for processin
Page 134 and 135: Gentian Violet Solution — Non-Phe
Page 136 and 137: Table 4.1 Approximate Absorption an
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and recorded by autoradiography. Ni
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Ninhydrin solutions may be applied
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of development of ninhydrin-treated
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and certain nonreactive surface mat
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Procedure Xylene 50 mL Petroleum et
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ehavior of Ruhemann’s purple-meta
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4. Rinse the specimen in tap water.
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een treated with ninhydrin. In addi
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Working solution Stock solution 6 m
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Note: Combine and stir until citric
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Zauner 181 noted that on a rare occ
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3. Expose the tape surface to a hig
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lifting media were used, followed b
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under certain circumstances. The Br
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Physical Methods Visual Examination
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DRY Super Glue Fuming Powder Dustin
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Visual Examination Photography Iodi
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References 1. Olsen, R. D., Scott
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36. Springer, E. and Bergman, P., A
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74. McCarthy, M. M., Evaluation of
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110. Mooney, D. G., Development of
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142. Pounds, C. A., Grigg, R., and
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175. Jones, R. J. and Pounds, C. A.
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213. Hebrard, J. and Donche, A., Fi
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245. Misner, A., Wilkinson, D., and
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Fingerprint Development by Ninhydri
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Figure 5.1 2,2-Dihydroxy-1,3-indane
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Figure 5.4 Formation of murexide (V
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Figure 5.6 The 1,3-dipole form of t
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less volatile 1,1,2-trichloroethane
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Key to Routes Primary Special Secon
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Specially designed cabinets for che
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the importance of cooling the objec
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Figure 5.10 Ninhydrin (I) and some
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een prepared and evaluated as finge
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Figure 5.14 The red pigment formed
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Figure 5.16 The fluorescent product
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16. Pounds, C.A. and Jones, R.J., P
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51. Jungbluth, W.O., Replacement fo
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87. Kent, T., An operational guide
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116. Kobus, H.J., Pigou, P.E., Dell
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147. Dayan, S., Almog, J., Khodzhae
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Figure 6.1 Ninhydrin/ZnCl 2 vs. nin
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purposes of understanding their pho
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Ar-laser image monitor lens light c
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laser Figure 6.6 Block diagram of p
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step 1 step 2 step 3 fingerprint co
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nanocrystals. Photoluminescent semi
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Figure 6.11 Photoluminescence of fi
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H H H H N N CH2CH2 CH2CH2 H N N H N
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sample, rather than preferential ad
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O R C OH + R' NH2 R C Figure 6.16 G
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The amidation reaction depicted in
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R 1 - COOH + HO - N R 1 O C N H Fig
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29. Sooklal, K., Hanus, L.H., Ploeh
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Procedure Water and Acid Pretreatme
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The Silver Physical Development Pro
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(in the emulsion) the silver and si
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ions (found only on paper that has
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as that of print residue on porous
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+ + + + + + + Cit 3- Cit 3- Cit 3-
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Saunders. 22 Both workers recognize
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Figure 7.2 Scanning electron micros
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paper and these convert to ferric o
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Water and Acid Pretreatments The wa
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Figure 7.4 Comparison of a ninhydri
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Figure 7.7 Comparison of a ninhydri
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(0.2%) to not form silver oxide whe
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X-Ray and Scanning Electron Microsc
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is much to be done to optimize the
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3. Margot, P. and Lennard, C., Fing
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35. Morris, J.R. and Wells, J.M., A
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Introduction More than a century ha
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False Reject Rate (FRR) Civilian Ap
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Fingerprint Quality Acquisition Est
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finger gets mapped onto the two-dim
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(a) (b) (c) Figure 8.3 Fingerprint
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In forensics, a special kind of ink
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L A B (a) Finger Friction Surface R
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Fingerprint Representation A finger
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(a) (b) (c) (d) Figure 8.8 A finger
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Figure 8.10 Relative configuration
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A minutiae feature extractor finds
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depicting a ridge in the fingerprin
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1. Singular points. The Poincare in
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Table 8.2 shows the results of the
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(a) (b) Figure 8.13 Two different i
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ox size is adjusted based on the es
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(a) (b) Figure 8.16 Fingerprinting
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0.5 -0.5 -1 200 1 0.8 0.6 0.4 0.2 1
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andpass filters and extracts ridges
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(a) (b) Figure 8.19 Examples of enh
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A significant implication of the ab
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or otherwise. Therefore, there are
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Conclusions and Future Prospects Fi
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WSQ-related illustrations (Figure 8
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37. Siemens. The ID Mouse from Siem
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69. L. Hong, A. Jain, and S. Pankan
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Trauring Model (1963) Description o
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correspondence in friction ridge de
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extreme variability of friction rid
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5. Trauring 19 6. Kingston 20 7. Os
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variation need have no relationship
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1. Fork directed to the right 2. Fo
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e closer to reality. In any case, t
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There is not only opportunity for c
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that, in practice, it is relative d
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e the probability that there will b
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Correction factors (G) were introdu
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fingerprint individuality into two
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appreciated that the number of tria
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a corresponding reference point is
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Table 9.1 Kingston’s Relative Fre
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minutia counts in different-sized r
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If one is to use the compound forms
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Osterburg Model (1977-1980) Descrip
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of any occurrences that appear in t
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minutiae. Both the Kingston and Ost
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minutia orientation results in regi
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Orientation for minutiae was define
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the allowable combinations of minut
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selected for the study, based on th
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Table 9.4 Champod’s Upper Bound F
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that Champod and Margot proved to b
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fingerprint was isolated. This area
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that, for the experiments as design
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can be encouraged by the dedication
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37. Amy, L., Valeur de la preuve en
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The Expert Fingerprint Witness ROBE
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Qualifications of the Fingerprint E
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7. Results of comparisons conducted
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granted for a pretrial conference,
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any examination that I have conduct
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to fully understand the meaning of
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When seated in the witness stand, t
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jury but looked down at the floor i
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Courtroom Courtesy When in court, i
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If the attorney does not have the p
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Glossary of Commonly Used Courtroom
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Indictment An accusation in writing
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APPENDIX Daubert Hearings EDWARD GE
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The U.S. Government set presented e
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Presided over by the Honorable J. C
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