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Чернова, О. Ф.

doi:10.1023/a:1015482430438

Cited by 15 publications

(3 citation statements)

References 40 publications

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“…The medullar layer had the most fragile hairs (as in Cervidae), and the seasonal changeability of medulla progress validates this layer's contribution to thermal insulation (Wei et al, 1997). Chernova (2002); (Chernova, 2014) revealed the hair identification database. The medulla had two morphologies: ladder and non-columnar; the latter had thick and thin-walled medulla.…”

Section: Discussionmentioning

confidence: 99%

Light and scanning electron microscopic characterization of the Egyptian buffalo hair in relation to age with analysis by SEM‐EDX

El‐Gendy

Derbalah

El‐Mansi

et al. 2023

Microscopy Res & Technique

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The purpose of this study was to demonstrate a relationship between the microstructure and measurements of Egyptian buffalo hair and age. The buffalo studied ranged in age from young to premature to adult (3–8 months, 1.5–3, 4–6, and 8–10 years). The hair was collected from the animals' withers. Cuticle elements were examined using scanning electron microscopy (SEM), light microscopy, and energy‐dispersive X‐ray (EDX) analysis. Hair shaft diameter increased with age, according to SEM and light microscopy measurements. The values of shaft diameter obtained by SEM of the same animal were 64%–67% of the values obtained by light microscopy due to shrinkage of the hair during the drying process. Additional microscopy measurements revealed that the width of the cortex and medulla increased with age, while the width of the cuticle decreased slightly. The medulla index of four different age groups ranged from 0.56 to 0.61 μm. The average distance between successive scale values increased from 4.83 μm in the young group to 8.86 μm between the ages of 8 and 10 years. The scale pattern had a distinct personality at each stage of age. The hair medulla was in the center and consisted of a mesh‐like structure with large pores divided into smaller pores by septa. The cortex was a bundle of fibers that wrapped around the medulla. Light microscopy revealed small oval granules and large streak‐like granules in the cortex. EDX spectra revealed that carbon, oxygen, and nitrogen were shown to be more abundant in all age groups of buffalo. In buffalo hair, oxygen was the second most abundant element after carbon. The carbon mass in the examined samples decreased slightly with age (42.31%, 39.18%, 38.88%, and 38.49%), while oxygen increased with age. We concluded that hair measurements varied with age, scale microstructure, and elements, so we estimated buffalo animals' ages up to 10 years. Highlights The goal was to show a link between the microstructure and measurements of Egyptian buffalo hair and age. Hair shaft diameter increased with age, according to scanning electron microscopy (SEM) and light microscopy measurements. The hair shaft diameter obtained by light microscopy was higher than that obtained by scanning electron microscopy of the same animal; we hypothesized that the difference in hair shaft diameter measured by light microscopy and scanning electron microscopy of the same animal was due to the shrinkage of the hair during the drying process. The width of the cortex and medulla increased with age, while the width of the cuticle decreased slightly. The average distance between successive scale values increased from 4.83 μm in the young group to 8.86 μm between 8 and 10 years old. At each stage of age, the scale pattern had a distinct personality. Carbon, oxygen, and nitrogen were found to be more abundant in the hair of buffalo of all ages and were detected using energy‐dispersive X‐ray (EDX) spectra. After carbon, oxygen was the second most abundant element in buffalo hair. The carbon mass in the samples studi...

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Section: Discussionmentioning

confidence: 99%

Light and scanning electron microscopic characterization of the Egyptian buffalo hair in relation to age with analysis by SEM‐EDX

El‐Gendy

Derbalah

El‐Mansi

et al. 2023

Microscopy Res & Technique

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“…Material classifications can be challenged when the garments are heavily altered, or when no relevant comparative materials are available. Additionally, hollow organ connective tissue and skin tissues from different species can have very similar morphology and appearance 6 , and hair shape can even vary within the same species, in relation to the age, sex, nutrition, health state, and sampled area of the hide 7 . Therefore, the reliability and reproducibility of macro- and microscopic visual interpretations of the biological origin of skin and hair objects can sometimes be insufficient to achieve species-level identifications.…”

Section: Introductionmentioning

confidence: 99%

Paleoproteomic identification of the species used in fourteenth century gut-skin garments from the archaeological site of Nuulliit, Greenland

Cucina,

Schmidt,

Di Gianvincenzo

et al. 2024

Sci Rep

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Until recently, the identification of the species of origin for skin and fur materials used in the production of archaeological clothing has been based on the analysis of macro- and microscopic morphological features and on the traditional knowledge of Indigenous groups. This approach, however, is not always applicable due to the deterioration of the archaeological objects. Paleoproteomics was used as an alternative approach to identify the species of origin of fifteen samples of various tissues from approximately 600-year-old garments found in Nuulliit, northern Greenland. Proteomics revealed that a limited group of marine and terrestrial mammals were used for clothing production. The results obtained from the analysis of multiple types of clothing and elements, such as sinew thread and gut skin, suggest that their applications were based on their properties. When conclusive assignment of a sample to a species via proteomics was not possible, the observation by transmitted light microscopy of feather and hair micromorphology, if not affected by diagenesis, was used to improve the identification. The proteomic characterization of animal materials used for clothing production in the Nuulliit archaeological context provides an insight into the practical knowledge and the strategies adopted by the local Indigenous community to exploit natural resources.

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“…Os pêlos são anexos epidérmicos inerentemente exclusivos dos mamíferos (QUADROS, 2002), sendo o motivo da classe ser chamada Trichozoa (animais peludos) ou Pilífera (que carrega pêlo) (CHERNOVA, 2002). A pele dos animais tem duas camadas principais, a derme ou mesoderme (inferior) e epiderme ou ectoderme (CHANG; TSAI; YU, 2005) (externa, composta por camadas de células vivas e mortas) (TEERINK, 1991).…”

Section: Formação Estrutura E Padrõesunclassified

Discriminação de espécies de mamíferos via tricologia com descritores quantitativos de forma utilizando processamento digital de imagens, visão artificial e análise de formas

Silva

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Untitled

Cited by 15 publications

References 40 publications

Light and scanning electron microscopic characterization of the Egyptian buffalo hair in relation to age with analysis by SEM‐EDX

Light and scanning electron microscopic characterization of the Egyptian buffalo hair in relation to age with analysis by SEM‐EDX

Paleoproteomic identification of the species used in fourteenth century gut-skin garments from the archaeological site of Nuulliit, Greenland

Discriminação de espécies de mamíferos via tricologia com descritores quantitativos de forma utilizando processamento digital de imagens, visão artificial e análise de formas

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