Analysing Human Nails Composition by Using Laser Induced Breakdown Spectroscopy

Harun, Hafizah; Zainal, Roslinda; Daud, Yaacob Mat

doi:10.17576/jsm-2017-4601-10

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…In Ref. [22], the LIBS spectra of nails of people of different age and sex were studied. The results show that the line intensities of Ca, Al, Ti, P and K elements are higher among women, and Mg and Na -for men.…”

Section: Resultsmentioning

confidence: 99%

1540 nm LIBS Investigation of Healthy and Pathological Human Nails

Беликов

Smirnov

Tavalinskaya

et al. 2020

J-BPE

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The paper discusses the possibility of using laser-induced breakdown spectroscopy (LIBS) as a method for the diagnosis of human nail onychomycosis. LIBS spectra obtained with excitation of plasma on the surface of healthy and onychomycotic nails by pulses of Q switched Yb, Er: Glass laser radiation with a wavelength of 1540 nm were compared for the first time. The spectrum of onychomycotic nail contained unique lines additional to characteristic spectral lines of healthy nails. These additional lines disappeared after 90 days of sample storage in air at room temperature 20 ± 3 °C.

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Section: Resultsmentioning

confidence: 99%

1540 nm LIBS Investigation of Healthy and Pathological Human Nails

Беликов

Smirnov

Tavalinskaya

et al. 2020

J-BPE

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“…Although the fluorescence intensity was higher than the criterion of, the white biomarker rectangles were roughly generated, using the AI algorithm, as the calcium distribution labels in the food. For example, calcium carbonate-rich fish bones under all cooking conditions (Figure 5) had a concentration of 15-26% calcium by weight [17][18][19]. A raw cod fillet (Figure 5D) and calcium carbonate powders of a phantom fingernail (Figure 6A) presented a calcium weight concentration of 16% and 39.2%, respectively.…”

Section: Discussionmentioning

confidence: 99%

Hybrid Vibration and UV Fluorescence Technology for Rapid Imaging and Guidance for Manual Removal of Fish Bones from Fish Floss

Wang

Lee

Wei

et al. 2022

Sensors

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The objective of the proposed human–machine cooperation (HMC) workstation is to both rapidly detect calcium-based fish bones in masses of minced fish floss and visually guide operators in approaching and removing the detected fish bones by hand based on the detection of fingernails or plastic-based gloves. Because vibration is a separation mechanism that can prevent absorption or scattering in thick fish floss for UV fluorescence detection, the design of the HMC workstation included a vibration unit together with an optical box and display screens. The system was tested with commonly used fish (swordfish, salmon, tuna, and cod) representing various cooking conditions (raw meat, steam-cooked meat, and fish floss), their bones, and contaminating materials such as derived from gloves made of various types of plastic (polyvinylchloride, emulsion, and rubber) commonly used in the removal of fish bones. These aspects were each investigated using the spectrum analyzer and the optical box to obtain and analyze the fluorescence spectra and images. The filter was mounted on a charge-coupled device, and its transmission-wavelength window was based on the characteristic band for fish bones observed in the spectra. Gray-level AI algorithm was utilized to generate white marker rectangles. The vibration unit supports two mechanisms of air and downstream separation to improve the imaging screening of fish bones inside the considerable flow of fish floss. Notably, under 310 nm ultraviolet B (UVB) excitation, the fluorescence peaks of the raw fillets, steam-cooked meat, and fish floss were observed at for bands at longer wavelengths (500–600 nm), whereas those of the calcium and plastic materials occurred in shorter wavelength bands (400–500 nm). Perfect accuracy of 100% was achieved with the detection of 20 fish bones in 2 kg of fish floss, and the long test time of around 10–12 min results from the manual removal of these fish bones.

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