Variation In Human Hair Morphology And Microstructure
DOWNLOAD
Download Variation In Human Hair Morphology And Microstructure PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Variation In Human Hair Morphology And Microstructure book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Variation In Human Hair Morphology And Microstructure
DOWNLOAD
Author : Sandra Koch
language : en
Publisher:
Release Date : 2018
Variation In Human Hair Morphology And Microstructure written by Sandra Koch and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Human hair varies considerably in form and color within an individual and among groups. I examined diversity within human hair, and conducted tests to determine the nature and pattern of differences in the size and shape of hair and the density and distribution of pigment granules (melanosomes). Differences in hair form and cuticle thickness are apparent between broadly defined geographic ancestry groups, but these categories do not necessarily reflect our modern, genetically admixed world.Using Transmission Electron Microscopy (TEM), I investigated the degree of cuticle variability within the hairs from individuals, hairs from peoples who shared similar ancestry, and among people with diverse ancestries. Measurable differences were found in cuticle thickness and in the number of cuticle layers among the populations studied. Hairs from people with African ancestry tend to have thinner cuticles with fewer layers making up the cuticle, while those from people of European and East Asian ancestry tend to have thicker cuticles made up of more layers. Samples of hairs from peoples of European and East Asian ancestry are not statistically significant in cuticle thickness and in the number of layers. Testing European and East Asian hairs against African hairs show statistically significant differences in the cuticle thickness and number of layers. Variation exists within and among human populations in hair color, degree of curl, cross-sectional shape, diameter, and length. Analyses of hair dimensions and the number and distribution of pigment particles within a hair cross section revealed variability among diverse populations, and demonstrated that hair traits are not easily separable into distinct categories by ancestry. These findings offer support for eliminating the use of the outdated three-category racial typologies used by many U.S.-trained forensic scientists. I observed general trait patterns that may be useful for future research and that point to the need for additional research on the effects of genetic admixture to better assess ancestry traits in human hair.
Post Mortem Changes In The Microstructure Of Human Hair
DOWNLOAD
Author : A. Z. Pavlova
language : en
Publisher:
Release Date : 1986
Post Mortem Changes In The Microstructure Of Human Hair written by A. Z. Pavlova and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
Microscopy Of Hairs
DOWNLOAD
Author : John W. Hicks
language : en
Publisher:
Release Date : 1977
Microscopy Of Hairs written by John W. Hicks and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Evidence, Criminal categories.
Atlas Of Human Hair
DOWNLOAD
Author : Robert R. Ogle Jr.
language : en
Publisher: CRC Press
Release Date : 2017-08-21
Atlas Of Human Hair written by Robert R. Ogle Jr. and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-21 with Law categories.
It fills a void in the resources available to researchers and practitioners in forensic hair examination by providing photographic archetypes for the microscopic characteristics of human hair and the variates of the characteristics seen in forensic examinations, including curl; color; pigment distribution and density; cortical fusi; and ovoid bodie
Chemical And Physical Behavior Of Human Hair
DOWNLOAD
Author : Clarence R. Robbins
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-05-26
Chemical And Physical Behavior Of Human Hair written by Clarence R. Robbins and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-05-26 with Medical categories.
Human hair is the subject of a wide range of scientific investigations. Its chemical and physical properties are of importance to the cosmetics industry, forensic scientists, and to biomedical researchers. This updated and enlarged fourth edition continues the tradition of its predecessor as being the definitive monograph on the subject. It now contains new information on various topics including: chemical hair damage, the cause of dandruff, skin and eye irritation, hair straightening, and others. Chemical and Physical Behavior of Human Hair is a teaching guide and reference volume for cosmetic chemists and other scientists in the hair products industry, academic researchers studying hair and hair growth, textile scientists, and forensic specialists.
Forensic Examination Of Hair
DOWNLOAD
Author : James R. Robertson
language : en
Publisher: CRC Press
Release Date : 1999-06-10
Forensic Examination Of Hair written by James R. Robertson and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-06-10 with Law categories.
The examination of human hairs in the forensic science setting is a highly specialist forensic discipline. To date the topic has not been covered in a single volume in which all aspects of hair examination are brought together. In this volume an international group of authors have dealt with all aspects of the examination of human hair. The volume
The Hair Fibre Proteins Structure And Development
DOWNLOAD
Author : Jeffrey E. Plowman
language : en
Publisher: Springer
Release Date : 2018-05-24
The Hair Fibre Proteins Structure And Development written by Jeffrey E. Plowman and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-24 with Medical categories.
Hair is a sophisticated bio-based material, whether it is on a human head or part of a mammalian coat. In particular, the role of the proteins in the follicle, integral to hair development, are not well understood. This new book seeks to integrate the latest research in proteomic and morphological studies into a coherent description of fibre development from the follicle to its final mature, keratinized form. To achieve this the book has been divided into three sections. The first describes the keratins, their associated proteins and how they assemble into intermediate filaments in the fibre. The second covers the latest information on the morphological changes that occur from the base of the follicle, through the keratinization process to the mature fibre and the role that proteins play in this. The final section delves into fundamental fibre properties such as crosslinking, thermal and oxidative modifications and how these affect the mature fibre. The editors of this book are internationally recognised for their work in the area of mammalian hair, Jeffrey Plowman for his knowledge of the proteomics of the fibre, Santanu Deb-Choudhury for his work in the area of crosslinking in the fibre and Duane Harland for his understanding of the morphological development of the fibre. Together they have collected material from other international experts: Leopold Eckhart and Florian Ehrlich for their knowledge of the evolution of keratins; Dong Dong Wu and David Irwin for their studies on keratin associated protein evolution; David Parry and Bruce Fraser for their work on keratin and keratin associated protein structure and assembly; John McKinnon for his studies on macrofibril formation; Crisan Popescu for the thermodynamics of keratins; and Jolon Dyer for his oxidative modification studies of keratins. This book provides a comprehensive introduction, and useful reference guide to hair biology and will be of interest to both scientists and technologists.
Skin Hair And Nails
DOWNLOAD
Author : Bo Forslind
language : en
Publisher: CRC Press
Release Date : 2014-05-14
Skin Hair And Nails written by Bo Forslind and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-14 with Hair categories.
Stressing a structure-function approach, this multidisciplinary reference presents a detailed overview of the biological, chemical, physical, molecular and genetic tools and techniques utilized in the study of the skin barrier.
Biophysics Of Human Hair
DOWNLOAD
Author : Bharat Bhushan
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-11-25
Biophysics Of Human Hair written by Bharat Bhushan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-11-25 with Science categories.
This book presents the biophysics of hair. It covers the structure of hair, its mechanical properties, nanomechanical characterization, tensile deformation, tribological characterization, the thickness distribution and binding interactions on hair surface.
Innate
DOWNLOAD
Author : Kevin J. Mitchell
language : en
Publisher: Princeton University Press
Release Date : 2020-03-31
Innate written by Kevin J. Mitchell and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-03-31 with Psychology categories.
"What makes you the way you are--and what makes each of us different from everyone else? In Innate, leading neuroscientist and popular science blogger Kevin Mitchell traces human diversity and individual differences to their deepest level: in the wiring of our brains. Deftly guiding us through important new research, including his own groundbreaking work, he explains how variations in the way our brains develop before birth strongly influence our psychology and behavior throughout our lives, shaping our personality, intelligence, sexuality, and even the way we perceive the world. We all share a genetic program for making a human brain, and the program for making a brain like yours is specifically encoded in your DNA. But, as Mitchell explains, the way that program plays out is affected by random processes of development that manifest uniquely in each person, even identical twins. The key insight of Innate is that the combination of these developmental and genetic variations creates innate differences in how our brains are wired--differences that impact all aspects of our psychology--and this insight promises to transform the way we see the interplay of nature and nurture. Innate also explores the genetic and neural underpinnings of disorders such as autism, schizophrenia, and epilepsy, and how our understanding of these conditions is being revolutionized. In addition, the book examines the social and ethical implications of these ideas and of new technologies that may soon offer the means to predict or manipulate human traits. Compelling and original, Innate will change the way you think about why and how we are who we are."--Provided by the publisher.