• Journal of the Korea Society of Computer and Information
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• v.28 no.4
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• pp.105-112
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• 2023

In this paper, we propose a new method for displaying colored defects by measuring the relative density with the wide-area and local densities of X-ray. The relative density of one pixel represents a relative difference from the surrounding pixels, and we also suggest a colorization of X-ray images representing these pixels as normal and defective. The traditional method mainly inspects materials such as plastics and metals, which have large differences in transmittance to the object. Our proposed method can be used to detect defects such as sprouts or holes in images obtained by an inspection machine that detects X-rays. In the experiment, the products that could not be seen with the naked eye were colored with pests or sprouts in a specific color so that they could be used in the agricultural product selection system. Products that are uniformly filled with a single ingredient inside, such as potatoes, carrots, and apples, can be detected effectively. However, it does not work well with bumpy products, such as peppers and paprika. The advantage of this method is that, unlike machine learning, it doesn't require large amounts of data. The proposed method could be applied to a screening system using X-rays and used not only in agricultural product screening systems but also in manufacturing processes such as processed food and parts manufacturing, so that it can be actively used to select defective products.

• Journal of Life Science
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• v.26 no.3
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• pp.359-363
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• 2016

We have screened four natural products against 640 single compounds, which shows more two folds gene expression for both endoplasmic reticulum aminopeptidase 1 (ERAP1) and FOXO-family transcription factor (FOXO1). The results were as follows. (±)-Car-3-ene-2,5-dione from Asarum sieboldii Miq. is C₁₀H₁₂O₂ molecular formula and the 164 kDa molecular weight. Cinobufagin from Bufonis Venennum is C₂₆H₃₄O₆ molecular formula and 442 kDa molecular weight. So far reported main biological function is Na⁺/K⁺-ATPase inhibition. Corilagin from Euphorbia pekinensis is C₂₇H₂₂O₁₈ molecular formula and 634 kDa molecular weight. Carbonic anhydrase inhibition is well known its biological function. Corydaline from Corydalis turtschaninovii is C₂₂H₂₇NO₄ molecular formula and 369 kDa molecular weight. The main biological function is acetylcholinesterase inhibition. In the short future, four types of natural products will be used in longevity experiments with insects. The results may give one of the clues for studying new drug development candidates of the longevity.