• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.6
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• pp.2612-2617
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• 2013

This study aims to develop hair cutter with zirconia($ZrO_2$) material whose machinability, corrosion resistance, wear resistance and bio-compatibility are excellent by comparing iron hair cutter. Ultra-thin zirconia cutter with the thickness of 0.253mm is manufactured through the optimization of design, molding, sintering, grinding and grinding process. With observation result of cutter specimen by use of scanning electron microscope(SEM), formability and process of cutting face are shown to be good. It is also evaluated with sufficient merchantability by cutting test results. The cutter process technology of thin zirconia can be utilized at the development of high value-added beauty appliances like razor, beauty-razor and eye brows-razor for woman by use of study result.

• Applied Microscopy
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• v.38 no.4
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• pp.347-351
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• 2008

The morphological characteristics of the cut sections of hair using razor, clipper and scissors were investigated with scanning electron microscopy. With the razor, the cutting section had a long elliptical form and a rhythmical ribbon shape. It was curved outward since the end part of it became thinner. With the scissors, the cutting section had a flat, circular form. It seemed to be because the scissors imposed a constant strength on the hair. With the clipper, the cutting section had also a circular form but a layer of the macrofibril was generated in the middle part of the cortex. It seemed to be generated while the rapidly moving blades of the clipper cut the hair in an instant.

• Proceedings of the Korean Society of Computer Information Conference
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• 2019.07a
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• pp.45-48
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• 2019

파이썬 플라스크와 MySQL데이터베이스를 이용한 스마트콘텐츠에서의 효율적인 클라우드 접속기술에 관한 효율적인 방법을 제시한다. 또한 스마트콘텐츠 제작단계에서 와이파이 혹은 블루투스를 이용한 클라우드 인터넷 접속시의 오류최소화를 위한 견고한 하우징제작을 위해 어도비 일러스트레이터를 이용한 표준화된 레이져커팅 방법도 제시한다. 이는 향후 4차 산업혁명시기에 필수적인 지능적이고 다이너믹한 특성을 갖는 스마트콘텐츠 제작과정에서의 시행착오를 줄여줄 것이며, 이를 통해 다양한 아이디어의 스마트콘텐츠가 양산될 수 있는 계기가 될 것으로 생각한다. 제시한 방안의 타당성을 검증하기 위해 실제로 구축한 가장 효율적인 스마트콘텐츠의 제각과정과 그 결과를 보인다.

• BMB Reports
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• v.32 no.2
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• pp.203-209
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• 1999

Three-week grown Arabidopsis thaliana leaves were wounded by cutting whole leaves with a razor blade into pieces (about$3\;mm\;{\times}\;3\;mm$) submerged in various solutions, and incubated in a growth chamber for 24 h. We measured and compared activities of several enzymes such as phenylalanine ammonia-lyase (PAL), tyrosine ammonia-lyase (TAL), thioredoxin, thioredoxin reductase, thioltransferase, glutathione reductase, and $NADP^+$ -malate dehydrogenase. PAL activity was decreased in $HgCl_2$-, $CdCl_2$-, and glyphosate-treated leaf slices, and could not be detected after treatment with $CdCl_2$. TAL activity was found to be maximal in the $CdCl_2$-treated leaf slices. Activity of thioredoxin, a small protein known as a cofactor of ribonucleotide reductase and a regulator of photosynthesis, was significantly increased in the $CdCl_2$-treated leaf slices, while thioredoxin reductase activity was maximal in the $HgCl_2$-treated leaf slices. Thioltransferase and glutathione reductase activities were significantly decreased in the $HgCl_2$-treated leaf slices. $NADP^+$ -malate dehydrogenase activity remained relatively constant after the chemical treatments. Our results strongly indicate that sulfhydryl-related and phenylpropanoid-synthesizing enzyme activities are affected by chemical treatments such as hydrogen peroxide, heavy metals, and glyphosate.

• Journal of Korean Society of Forest Science
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• v.37 no.1
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• pp.61-63
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• 1978

Both bark and wood sections obtained, by cutting with a razor blade, from living tissue of Cronartium ribicola cankers of Korean white pine (Pinus koraiensis) were transferred to a mixture of 2 parts of chloroform and 1 part of methanol, and the sections were stained using a modified lactophenol cotton blue. The formula for this staining is as follows: Lactic acid 20gm, phenol crystal 20gm, cotton blue 0.05gm, and 60% EtOH 100ml. The rust hyphae and haustoria were stained blue, and the wide hyphae with straight or curved haustoria could be distingwished from the pine tissue.