• Analytical Science and Technology
• /
• v.30 no.6
• /
• pp.303-311
• /
• 2017

A new method for obtaining the photoluminescence of footwear impression by using 1,2-indandione (1,2-IND) solution, which is a latent fingerprint-developing reagent, was studied. A binary complex of DL-alanine and 1,2-IND was prepared by spraying a DL-alanine solution and the 1,2-IND solution (an amino acid sensitive reagent) onto dry or wet origin footwear impression deposited on the surface of printed A4 paper. This binary complex reacts with the trace metal component in the footwear impression to form a ternary complex that exhibits photoluminescence. However, when 5-methylthioninhydrin (5-MTN) solution was used instead of 1,2-IND, no consistent photoluminescence was observed even under identical treatment conditions. In addition, when footwear impressions treated with DL-alanine and 1,2-IND solutions were stored under various temperature conditions (30, 40 and $50^{\circ}C$) and various humidity conditions (30 %, 40 %, 50 % and 60 % RH), the contrast between the footwear impression and the background decreased. Optimal footwear impression photoluminescence was obtained when the footwear impressions treated with DL-alanine and 1,2-IND solutions were stored at $30^{\circ}C$ and 30 % RH for 1 h. The sensitivity of the developed method was ccompared with the sensitivities of three known methods - black gelatin lifting, 2,2'-dipyridyl treatment, and 8-hydroxyquinoline treatment. The results showed that the sensitivity of the developed method was worse than that of the black gelatin lifting method but better than that of 2,2'-dipyridyl or 8-hydroxyquinoline treatment method.

• The Journal of the Korea Contents Association
• /
• v.17 no.1
• /
• pp.92-99
• /
• 2017

Kicking someone has clothes on causes direct contact between victim's clothes and skin. This contact makes material exchange from skin to inner clothes. In this study, foot impressions by transferred to cloths from skin would be enhanced by amino acid staining reagent (ninhydrin, 1,2-IND/Zn, DFO). In view of research ethics, we conducted this research with porcine skin instead of human's one. To mimic human's skin condition, applied artificial sweat on porcine skin. According to results, ninhydrin showed high contrast on light colored background and 1,2-IND/Zn, DFO showed high contrast on dark colored background. It showed different results up to kind of fabrics.

• The monthly packaging world
• /
• s.37
• /
• pp.86-87
• /
• 1996

• Korean Architects
• /
• no.12 s.177
• /
• pp.24-26
• /
• 1983

• 프린팅코리아
• /
• s.71
• /
• pp.84-85
• /
• 2008

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.38 no.11
• /
• pp.1299-1307
• /
• 2014

In this work, an appropriate analysis model of a precise foot sensor with low detection pressure capability under a low range of variation in the dimensional variables was proposed. With a simple two-dimensional model, it was found that a remarkably high error level sometimes occurred between the analysis and experimental results. In order to overcome the error and improve the performance, a three-dimensional model was introduced, and the detection pressure and sensor characteristics were compared with those of the experimental results, which showed its enhanced performance with less error and higher precision.

• Journal of Korean Medical classics
• /
• v.18 no.4 s.31
• /
• pp.67-82
• /
• 2005

지구온난화(地球溫暖化), 식습관(食習慣), 주거환경여약물지오남용(住居環境與藥物之誤濫用), 공치기습열적체어체내(共致其濕熱積滯於體內), 소이유인음정부족이상화치성적병기(所以有因陰精不足而相火熾盛的病機), 기내용시여하(其內容是如下). 기일원인시지구온난화(其一原因是地球溫暖化), 차부단야기급성열성전염병(此不但惹起急性熱性傳染病), 이차야기음부족적허열성질환(而且惹起陰不足的虛熱 性疾患). 기이원인시식습관(其二原因是食習慣), 차적체습열이유발상화(此積滯濕熱而誘發相火), 차유발과도적양화작용(且誘發過度的陽化作用), 소이야기음부족적병기(所以惹起陰不足的病機). 기삼원인시주거환경(其三原因是住居環境), 차방기기적소통(此防其氣的疏通), 소이습열적체어체내이유발음부족적병기(所以濕熱積滯於體內而誘發陰不足的病機). 기사원인시약물적오남용(其四原因是藥物的誤濫用), 차치기열적잠복(此致其熱的潛伏), 소이유발음부족(所以誘發陰不足). 여차유발상화적현대환경(如此誘發相火的現代環境), 야기허열성질환(惹起虛熱性疾患). 소이증가태열여성인병(所以增加胎熱與成人病), 야취증가인과도적양화작용이불임질환(也就增加因過度的陽化作用而不姙疾患), 이차재정서적면(而且在情緖的面), 증가공격적여폭력적정서(增加攻擊的與暴力的情緖).

• Venture DIGEST
• /
• s.87
• /
• pp.10-11
• /
• 2005

카메라폰 렌즈 시장의 강자로 떠오른 디오스텍의 성장세가 갈수록 높아지고 있다. 선명한 렌즈 속 세상만큼이나 뚜렷한 족적을 업계에 남기고 있는 디오스텍. 한부영 대표에게 듣는 성공스토리는 고성능, 고화소 렌즈처럼 실감난다.

• Venture DIGEST
• /
• s.50
• /
• pp.6-7
• /
• 2004

강건한 벤처산업을 만들기 위해‘위대한 스승’은 꼭 필요하다. 짧은 역사를 가진 한국의 벤처역사속에서도 스승으로 삼을 만한 선배들의 족적들을 심심치 않게 찾아볼 수 있다. 그러나 혜성처럼 빛나다 어느날 사라져 버리는 벤처의 성공신화는 우리시대 스승의 참모습이 아니다. 성공신화만으로는 스승의 참모습으로 부족하다. 왜냐하면 하나의 기업으로서 사회적 책임을 다하는 시대정신을 가져야하고, 또한 장수해야하는‘위대성’을 스스로 보여주어야 하기 때문이다.

• 정보화사회
• /
• s.146
• /
• pp.27-29
• /
• 2000

1982년부터 줄곧 장비용 부품 생산에 매진한 단암전자통신(주). 엔지니어에게 조차 생소한 HIC 개발을 시작으로 이제는 부품업계에서 뚜렷한 족적을 남기고 있다. 이러한 성장의 배경에는 경기 고등학교와 서울대를 졸업한 이기윤 사장의 노력이 배어 있다. 단암의 일등 기술을 뒷받침할 이기윤 사장의 마인드를 살펴 보기로 한다.