靑色 슬라이드 製作法

徐贊基,朴裕哲,李俊石 경북대학교 과학교육연구소 1985 科學敎育硏究誌 Vol.9 No.-

Blue slides have been widely used in many fields such as education, science, business and administration. However, because the method of blue slide production is preserved secretly, the diffusion of know-how of making up blue slides is checked and the users had to pay expensive cost to get them in spite of relatively cheap cast and simple procedure of making them. This study puts the purpose to develop a new know-how which uses easily and cheaply available materials and has so simple procedure for non specialists to make the slides easily. The major findings are as follows. (1) It is desired to make toning solution which can be prepared from ferric ammonium citrate, oxalic acid and potassium ferricyanide. (2) As for these components, the proper masses of the components of the solution per liter are 6 grams respectively. (3) 6 minutes are required for effective toning. (4) 3-5% sodium bicarbonate solution is at an optimum condition to clean the letters.

비정질 합금이 나타내는 소성의 원천

이석우,이창면,채수원,김유찬,이재철 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.5

Various Cu-Zr bearing monolithic amorphous alloys, exhibiting different stress-strain behaviors, were prepared to investigate the nature of the plasticity shown by theses alloys. Microscopic observation of the quasi-statically compressed Cu_(50)Zr_(43)A1_(7) specimen revealed abundant precipitation of nanocrystallites, while insignificant changes in the microstructure were observed from the Cu_(64)Zr_(36) alloy. Finite element analysis was conducted in order to better understand the role of nanocrystallites in an amorphous matrix on the plasticity of the amorphous alloy. The activation energies for crystallization of the amorphous alloys were measured and correlated with the plasticity of the amorphous alloys. Herein, we report for the first time that the origin of the plasticity of monolithic amorphous alloys lies in the activation energy for crystallization. (Received February 14, 2005)

심전도의 디지털 기록화 모듈과 개인용컴퓨터 저장/분석시스템의 개발

조명찬,김기석,배장환,연태진,김동운,이태수,전은석,김유진 충북대학교 의학연구소 2001 忠北醫大學術誌 Vol.11 No.2

연구목적: 현재 우리나라의 의료분야에서는 정보기술의 발전으로 처방 전달 시스템과 전자차트의 활용이 상용화 되고 있으나 병원내에서 가장 많이 처방되고 검사되는 12-유도 심전도의 디지털화와 이에 연계된 심전도 결과의 개인용 컴퓨터로의 저장, 인터넷을 이용한 병원으로의 전송이나 타 기관에서의 심전도 결과의 동시 관찰 등에 관한 기술 등은 개발되지 못한 상태이다. 이에 본 연구에서는 심전도를 디지털화하며 저장이 가능한 PC 모듈을 개발하고 심전도 결과를 병원 전산 시스템에 포함시켜 병원내외에서 편리하게 조회, 검색할 수 있는 디지털 인터페이스를 개발하려 하였다. 재료 및 방법 : 낮은 전력에서 잡음특성이 우수한 대역여파기와 증폭기를 설계하였으며 각종기능이 내장된 고신뢰성 프로세서를 채택하였으며 전원 잡음이 고려된 필터와 전원 회로 설계로 하드웨어를 개발하였다. MSC 6.0과 Visual Basic 6.0을 바탕으로 하여 active X 모듈화를 유도하고 조회용 PC에서의 복원과 PACS로의 연동을 통해 순환기내과용 PACS 개발이 가능하도록 소프트웨어를 준비하였다. 결과: 심전도 검사자가 쉽게 장착, 검사가 가능한 소형화된 측정 모듈을 개발하였고 극저전류에서 동작이 가능하였으며 우수한 데이터의 압축 및 복원률을 구현하였다. 결론: 이번 심전도 디지털 모듈의 개발로 기존의 감광지에 의존하던 심전도 결과의 보존과 보관공간에 의한 경제적인 손실을 상당 부분 해결할 수 있으며 OCS에 연계된 결과로 인해 원내에서의 다면적 진료가 가능하다. 이번 연구에서 개발된 기술은 향후 디지털화된 심전도 기록장치와 같은 고부가 의료장치의 국산화와 광파일 의무기록 시스템이나 검사물의 무선 전송에 채용되어 의료 전달 체계나 응급체계의 발전에 기여하리라 사료된다. Purpose : The progressed communication technology commercialized the order communication system ( OCS) and the electric medical records( EMR) in the field of medicine in Korea. However, technologies of digitalization such as recording to personal computer, transfer to internet and simultaneous observation of electrocardiogram ( ECG) recorded at the different center were not realized yet. This study tried to invent personal computer module that can digitalize and record of the ECG and design the digital interface that can approach and search digitalized ECG in various part of hospital simultaneously. Materials and Methods : We had designed high-fidelity digital filter and amplifier which can work in very low voltage, had selected multifunctioned microprocessor. Activation X modulation was conducted by MSC 6.0 and Visual Basic 6.0. Softwares were prepared for the transfer of ECG informations from terminal PC to PACS and cardiologic PACS was designed for future application. Results : We have developed the small, portable, very low voltage managed ECG module and high quality digitalized information compression software in OCS and PACS. Conclusion : This invented ECG digital archive module can save hospital cost by substitution of ECG papers for digital storage or on-line storage, therefore ECG data can be handled in multisector of the hospital and through telemedicine. This technology can be applied to domestic ECG digitalizing device development and effective medical transfer system by adoption cordless medical information delivery.

천연염색 의류에 대한 소비자 반응 및 소비자 특성

홍나영,유혜경,이주현,석혜정,신혜성,김찬주 服飾文化學會 2003 服飾文化硏究 Vol.11 No.3

The main purpose of this exploratory research was to examine the characteristics of consumers who patronize natural-dyed clothes and their perceptions regarding natural-dyed clothes. Thirty three participants who have worn natural-dyed clothes were interviewed for the study. They were asked about styles and price of natural-dyed clothes they owned, their evaluation on them, and the lifestyles of themselves. Existence of subculture among the interviewes and its characteristics were also probed. The results indicated that natural-dyed clothes are relatively high-priced, mostly of modified hanbok style, and became popular in recent years. Interviewees frequently mentioned uniqueness and comfort as the main benefits of natural-dyed clothes, and expressed dissatisfaction regarding color fastness, easy care and problem of coordination. The consumers of natural-dyed clothes appeared to have strong preferences for environment conservation and Korean traditional culture. They also seemed to form a subcultural group who have commonality in their involvement in Korean cultural activities, mainly tea ceremony.

자동차용 실리콘 가속도센서의 개발(Ⅱ)

이종현,신장규,이상룡,천희곤,조찬섭,심준환,류인식,박석홍,허정준,박기열 경북대학교 센서기술연구소 1994 연차보고서 Vol.1994 No.-

자동차의 air-bag 장치에 실용될 수 있는 압저항형 단결정 실리콘 가속도센서 칩을 개발하기 위하여 결정 실리콘 미세구조의 제조방법을 확립하고, 단위공정의 검증을 통하여 일괄공정에 의한 PROTO-TYPE 칩을 만드는 기술을 연구하였다. 단결정 실리콘 미세구조는 선택확산법을 이용하여 정확히 선택된 영역에만 air-gap을 형성하여 미세구조의 측면식각을 방지하는 선택확산법에 의한 실리콘 마이크로머시닝 기술로 제조하였다. 일괄공정을 위한 단위공정확립을 위하여 PROTY-TYPE 8빔 브릿지형 가속도 센서를 제조하였다. 제조된 칩의 가속도에 따른 출력전압은 선형성을 나타내고 있으며, 감도는 약 50 ㎶/V·g로 나타났다. 이 감도는 50G용 가속도센서의 사양을 만족하지 못했다. 이는 공정에 의한 문제라기 보다는 가속도센서의 시뮬레이션에 의해 설계한 구조가 이미 원하는 감도에 못 미친다는 것으로 생각된다. 따라서 2차 공정으로 제조될 가속도센서의 파라미터를 SuperSAP 유한요소 패키지를 이용하여 실리콘 미세구조부의 파라미터에 따른 특성을 시뮬레이션하였다. 설계된 50G용 가속도센서의 mass Pad의 반경 및 빔 길이, 빔 폭, 빔 두께, 그리고 mass의 각 파라미터 값은 700 ㎛, 120 ㎛, 5 ㎛, 1.0 ㎎ 이었다. 반도체 공정기술, 관성질량 제조법 및 선택확산을 이용한 마이크로머시닝을 사용하여 일괄공정으로 8빔 브린지형 가속도센서를 제조하였다. We researched the establishment of the silicon microstructure fabrication technique to develop a piezoresistive type silicon acceleration sensor chip and the technique to make a proto-type chip by the verification of the unit-process. Silicon microstructure is fabricated silicon micro-machining by selective diffusion method. This method prevent a side-etching of microstructure because selective diffused region is only formed an air-gap. We fabricated a proto-type 8-beam bridge-type acceleration sensor to establish the unit-process for the batch-process. The output voltage of the chip represented linearity with acceleration, and the sensitivity was about 50 ㎶/V·g. But this sensitivity dosen't satisfy the requirements of a practical acceleration sensor. The cause of this result is assumed not process problem, but the structure designed by simulation isn't suitable already. Threfore, the characteristics of parameters of the acceleration sensor that will be fabricated by 2nd-process is simulated by SuperSAP finite-element package. The determined parameter values of beam length, beam width, beam thickness, mass, and mass radius are 120 ㎛, 5 ㎛, 1.0 ㎎, and 700 ㎛, respectively. We fabricated 8-beam bridge-type acceleration sensor by batch-process using a semiconductor process technique, proof-mass fabrication method, and micromachinig using selective diffusion.

Effect of High Pressure- and High Temperature-Treated Red Ginseng on β-oxidation in C2C12 Myotubes

Seok-Yeong Yu,Jong Seok Lee,Hee-Do Hong,Young-Chul Lee,Young-Chan Kim,Chang-Won Cho,Kyung-Tack Kim,Ok-Hwan Lee 한국식품영양과학회 2013 한국식품영양과학회 학술대회발표집 Vol.2013 No.11

손금조정에 관한 연구

유석규(Yu, Seok-kyu),유찬영(Yu, Chan-young) 한국경영교육학회 1999 경영교육연구 Vol.18 No.-

Fucoidan Promotes the Reconstruction of Skin Equivalents

Song, Yu Seok,Li, Hailan,Balcos, Marie Carmel,Yun, Hye-Young,Baek, Kwang Jin,Kwon, Nyoun Soo,Choi, Hye-Ryung,Park, Kyoung-Chan,Kim, Dong-Seok The Korean Society of Pharmacology 2014 The Korean Journal of Physiology & Pharmacology Vol.18 No.4

In this study we investigated the effects of fucoidan on the proliferation of fibroblasts and the reconstruction of a skin equivalent (SE). Fucoidan significantly stimulated the proliferation of CCD-25Sk human fibroblasts and Western blot analysis demonstrated that fucoidan markedly increased the expression of cyclin D1 and decreased the expression of p27. Fucoidan was used to reconstruct SE. Immunohistochemical staining showed that the addition of fucoidan to dermal equivalents increased expression of proliferating cell nuclear antigen (PCNA) and p63. In addition, expression of ${\alpha}6$-integrin was significantly increased by fucoidan, whereas expression of ${\beta}1$-integrin, type 1 collagen, elastin, fibronectin did not markedly change. These results suggest that fucoidan has positive effects on epidermal reconstruction and will therefore be beneficial in the reconstruction of SE.

한방복합치료를 병행한 도인운동요법이 요통환자의 통증 및 기능 개선에 미치는 영향

최봉석(Bong Seok Choi),이은정(Eun Jung Lee),이옥진(Yu Chen Li),이정민(Jung Min Lee),김은석(Eun Seok Kim),송광찬(Gwang Chan Song),정인철(In Chul Jung),오민석(Min Seok Oh) 한의병리학회 2018 동의생리병리학회지 Vol.32 No.1

Titelbild: Photoexcited Porphyrins as a Strong Suppressor of β‐Amyloid Aggregation and Synaptic Toxicity (Angew. Chem. 39/2015)

Lee, Byung Il,Lee, Seongsoo,Suh, Yoon Seok,Lee, Joon Seok,Kim, Ae‐,kyeong,Kwon, O‐,Yu,Yu, Kweon,Park, Chan Beum WILEY‐VCH Verlag 2015 Angewandte Chemie Vol.127 No.39

<P><I><B>Photoangeregte Porphyrinmoleküle</B></I> hemmen die β‐Amyloid‐Aggregation und bewahren vor postsynaptischer Toxizität und Verhaltensdefekten im <I>Drosophila</I>‐Alzheimermodell unter blauem Licht. In ihrer Zuschrift auf Seite 11634 ff. schildern C. B. Park, K. Yu et al. eine chemische Strategie für die photodynamische Unterdrückung der β‐Amyloid‐Aggregation mithilfe photosensibilisierender Moleküle.</P>