Analysis of major elements in pigmented melanocytic chicken skin using laser‐induced breakdown spectroscopy

Abstract

The concentration difference of major elements in melanocytic skin with respect to pigmentation level is analysed by laser-induced breakdown spectroscopy (LIBS) to investigate the applicability of LIBS as an in situ feedback tool for selective and complete laser removal of melanocytic skin tissue like nevus. The skin of black silkie chicken which had a characteristic darkly pigmented perifollicular skin surrounded by lightly pigmented extrafollicular skin was used as the sample. The results showed higher LIBS signal intensities of Ca and Mg but lower intensities of Na , Cl and K in the perifollicular skin than in the extrafollicular skin, which demonstrated the feasibility to use LIBS as a reliable method to distinguish skin tissues with difference in pigmentation level. Plasma emission of biochemical elements generated with a laser irradiation on melanocytic skin lesion.

Differentiation of femur bone from surrounding soft tissue using laser-induced breakdown spectroscopy as a feedback system for smart laserosteotomy

“…In addition, a molecular line of carbon to nitrogen bonding (CN) was observed in the recorded spectra. The observed lines were in agreement with the lines described in literature [26][27][28][29][30][31][32][33][34]. Later on, based on the 22 chosen peak intensities, 231 intensity ratios were generated using permutation…”

“…Such feedback mechanisms can rely on photoacoustic, spectroscopic or OCT-based measurements [16][17][18][19][20][21]. Hereby, the potential spectroscopic methods include diffuse reflectance, laser-induced breakdown, Raman, and fluorescence spectroscopy [22][23][24][25][26]. Among them, laser-induced breakdown spectroscopy (LIBS), as a powerful analytical technique, seems to be most promising to us since it enables using the same laser as during the cutting process.…”

Analisis Termodinamika Molekul Magnesium Sulphate (MgSO4)

“…Magnesium memiliki beberapa sifat yaitu : Tabel 4. Sifat Fisika dan Kimia Unsur Mg (174)(175)(176)(177)(178)(179) Sifat Fisika dan Kimia Data Penampilan Bau Massa atom (gr/mol) Jari-jari atom Jari-jari kovalen Jari-jari Van der Waals Jari-jari ion Kepadatan (gr/cc 3 (191) Oksigen ialah salah satu unsur kimia dalam sistem tabel periodik yang bernomor atom 8 dan berlambang O. Oksigen mudah bereaksi dengan hampir semua unsur lainnya (terutama menjadi oksida). Pada keadaan standar, dua atom unsur oksigen berikatan menjadi senyawa dioksigen dengan rumus O2 yang tidak berwarna, tidak berasa, dan tidak berbau (192; 193) .…”

Feature‐level fusion of laser‐induced breakdown spectroscopy and Raman spectroscopy for improving support vector machine in clinical bacteria identification

“…Laser‐induced breakdown spectroscopy (LIBS) and Raman spectroscopy are two famous spectral techniques because of their advantages in rapid, online, and in‐site detection. [ 1,2 ] As a new elemental detection method, LIBS has been used in identification of many kinds of substance with chemometrics, for instance, biomedical samples, [ 3–5 ] forensic evidences, [ 6–9 ] explosives, [ 10 ] plants, [ 11 ] alloy, [ 12 ] ore, [ 13 ] nutrient food, [ 14–16 ] and pathogenic microorganisms. [ 17 ] However, for substances with the same elemental composition, the feature line wavelengths are always similar.…”