이륙 직후 동력 상실시 활주로로 선회 착륙을 위한 안전 고도에 관한 연구

송병흠,김갑수 한국항공운항학회 1996 한국항공운항학회지 Vol.4 No.1

본 연구에서는 항공기 사고의 70% 이상을 차지하는 이ㆍ착륙단계 중에서, 이륙 직후 저고도에서 동력이 상실되었을 경우에 이륙활주로 방향으로 Turning Back하는 것은 어떠한 안전 한계를 지니고 있는지를 알아보기 위하여, 우선 조종사에 대한 설문 조사를 실시하여 비행 경력별로 이륙 직후 동력 상실시의 비상 처치 경향과 위험에 처할 확률을 조사하였다. 그리고 실제 활공 성능이 우수한 M20J 항공기와 기동 성능이 우수한 FH20 항공기를 이용한 비행 시험을 통하여 이륙 직후 Turning Back to Runway조작 시의 고도 손실과 선희시 하강율을 실험 자료로 구하였다. 비행 시험 자료를 비교 적용함은 물론 선희 소요 시간과 고도 손실, 선희율과 활공 속도와의 관계 등의 항공 역학적 이론을 적용한 분석 근거에 기초하여 안전하게 Turning Back to Runway 조작을 시작할 수 있는 안전 고도 한계 및 선희율을 제시하였다.

신체 장애인을 위한 전화기 개발

송병섭,황준길,곽수원 대구대학교 특수교육재활과학연구소 2009 再活科學硏究 Vol.27 No.1

본 연구에서는 일반 전화기 사용이 어려운 신체 장애인을 위하여 하나의 스위치를 이용하여 전화기를 사용할 수 있는 스캐닝 전화기를 개발하였다. 개발된 전화기는 일반 전화기와 스캐닝 해주는 메뉴와 번호를 LED와 LCD를 통하여 보여주는 스캐닝 전화기 그리고 스위치로 구성된다. 스캐닝 전화기를 제어하고 일반전화기 연결 해 주기 위하여 ATmega128을 사용하였으며 시스템의 입출력을 제어하기 위하여 아날로그 스위치와 디코더를 사용하였다. 개발된 시스템을 이용하여 성능평가를 한 결과, 설계한 바와 같이 하나의 스위치를 이용하여 전화기의 모든 기능의 사용이 가능하였으며 다양한 스위치와도 호환이 잘 되었기 때문에 손 이외의 머리나 발 등으로 사용이 가능하였다. A scanning telephone was developed for physical disabled people who has difficulties. User can select menu and number of telephone using a switch. The developed telephone consists of a manual telephone, a scanning telephone and a switch. the users can see the information on telephone menu and numbers through LED and LCD placed on the scanning telephone. AVR RISC processor ATmega128 was used to design control part of the scanning telephone, decoder and analog switches was used to control input/output of this system. After the system was implemented, the performance test was carried out. The user could control all functions of system with a switch as it has designed. Also the user could change the manual switch for any alternative switch which is very appropriate for individual. It allows user with severe disabilities to call their care-giver when the emergency occurs. From the result, the system will be adaptable for people with disabilities as well as aged people.

腎皮質 S-Adenosyl-L-Methionine : Protein-Carboxyl O-Methyltransferase에 關한 硏究 Protein-Carboxyl O-Methyltransferase from Bovine Renal Cortex

宋晩秀,林圭,黃炳斗,李載欣 충남대학교 의과대학 지역사회의학연구소 1987 충남의대잡지 Vol.14 No.2

S-Adenosyl-L-methionine : protein-carboxyl 0-methyltransferase (EC 2.1. 1. 24, protein methylase II) was purified from bovine renal cortex approximately 6, 780-fold with a 9% yield by combination of ammonium sulfate precipitate, Sephadex G-75 chromatography, S-adenosyl-L-homocysteine-sepharose 4B chromatography and hydroxyapatite chromatography, and then its properties and physiological role were investigated. 1. The enzyme showed a pH optimum around 5.6-6. 0. It is heat labile, inactivated by heattreatment for 3 minutes at 60℃, and when stored at -20℃ in the presence of 10% glycerol, its activity has been almost stable in a month. 2. Copper ion (Cu^2+}) and zinc ion (Zn^2+) were a potent inhibitors, the activity being completely inhibited at 2 mM. The inhibition of copper and zinc ions were recovered 85%and 63% of its activity adding of 4 mM EDTA, respectively. The inhibition of copper ion was completely recovered by adding of 10 mM mercaptoethanol, but zinc ion did not almost affect. 3. The apparent Km value for S-adenosyl-L-methionine was 4 x 10^-6M. Kinetic analysis of the enzyme in the presence of 25 uM copper ion showed that the nature of the inhibition to the enzyme was noncompetitive, considering that Km was constant and Vmax was decreased, and 50uM zinc ion showed that it was uncompetitive, considering that both Km and Vmax were decreased. 4. Immunoglobulin A, histone II and histone H3 were relatively good substrates for the enzyme. 5. The enzyme activity was completely inhibited by 0.4 mM of p-hydroxymercuribenzoic acid, but all of the activity was recovered in adding 10 mM mercaptoethanol, and the molecular weight of the enzyme was 24, 000. 6. The carboxylmethylated fractions of the brush-border membrane of bovine renal cortex had molecular weight of 70,000, 67,000, 45,000, 40,000, 31,000 and 27,000 etc. (6 fractions), as determined by SDS/polyacrylamide gel electrophoresis. 7. The carboxylmethylation of the brush-border membrane increased with time, S-adenosylmethionine, substrate concentration, and methylated brush-border membrane was demethylated by 50% for 10 minutes at pH 7.4. 8. D-Glucose uptake was inhibited by carboxylmethylation of brush-border membrane. These results suggest that protein methylase II may play some roles in regulating physiological function of brush-border membrane.

일부 지역 제조업체 안전·보건관계자들의 지식 및 태도에 관한 연구

송영표,리갑수,이성수,안규동,이병국 순천향대학교 산업의학연구소 1996 순천향산업의학 Vol.2 No.1

The useful preventive measure for industrial accidents in manufacturing industries could be achieved through automation, education of workers on safety, proper work practice and etc. The success of prevention of industrial accident could be haevily relied on the awareness of accident prevention of workers and management personnel in each industries. In order to obtain general awareness of industrial accident in terms of knowledge and attitude and to provide useful information for the proper preventive measure of industrial accident, questionnaire survey was done with manufacturing industries in Chunan area which has 5 and more workers. Questionnaire with 50 question items were sent to 570 relevant personnels in 471 manufacturing industries. Out of 560, 460 relevant personnel replied to the questionnaire. The results obtained were as follow; 1. While most manufacturing industries(391 industries, 86.7%) under study reported that they had full time occupational safety and health personnel, only 30 manufacturing industries(6.5%) with legal requirement of such personnel did not have relevant ones. 2. Most popular position for the personnel of safety and health duty were section chief(33.2%), and 46.8% of safety and health personnel were in the age group of 30-39. Whereas 66.9% of them were titled as production chief and management chief. 3. Most safety and health personnel(98.5%) reported that disseminated information from professional organization of occupational safety and health were very useful to carry out their safety and health duties. 4. Eight one percent respondent received safety education from governmental organization or affiliated institute and most of them (97.3%) reported that such education was very effective. 5. While 61.8% of respondent reported the necessity of field inspection by inspector for routine and consultation, 30.0% of respondent wanted document inspection without real field inspection. But most respondent replied that such inspections were useful for conducting safety and health prevention. 6. While 93.7% of respondent thought that accident prevention were helpful for production, 88.8% and 86.0 of them replied that accident prevention could influence the cost of production and quality of products, respectively which eventually influenced the competitiveness of each industries. 7. Eighty five percent of respondent replied that accident could be prevented with educational, personal and material resources. 8. While 96.5% of respondent replied that their industries provided safety education, out of them 26.2% industries thought that their safety education were superficial. The most popular frequency of safety education was once per month(56.0%) and 31.0% industries provided once a week. On the other hand 13.1% of industries provided every day safety education on regular basis. 9. While 45.2% of respondent replied that employer had strong commitment for safety and health, 41.3% of respondent replied that there were some changes and progression of employer's attitude for safety and health issues. 10. While 49.2% of respondent replied the necessity of legal requirement of safety personnel, 45.8% of respondent replied that voluntary requirement for safety personnel were more practical and helpful for accident prevention. 11. The necessity of periodic health examination were replied from most respondent(90.0%) and 73.0% of respondent thought that periodic health examination were helpful for the promotion of worker's health, but 56.4% of respondent criticized that periodic health examination were superficial and needed revision of content and method of periodic health examination. 12. Most respondent(92.7%) agreed the necessity of environmental measurement and 64.4% of respondent had their confidence on the result of environmental measurement, whereas 56.7% of respondent replied that their industries were repaired and improved according to the recommendation of environmental measurement and 85.6% of respondent replied that some kind of countermeasure for the recommendation such as supplies of personal protective equipments were done.

전주권 신공항부지 선정의 타당성에 관한 조사연구

송병흠,김갑수 한국항공운항학회 1998 한국항공운항학회지 Vol.6 No.1

In order to research the propriety of selection of 4 potential airport sites after a field investigation is made in JEONJU area, this paper analyzes those sites comparatively considering major factors required by FAA There are at least 10 factors that should be considered when analyzing potential rurport sites convenience to users, availability of land and land costs, design and layout of the rurport, airspace obstructions, engineering factors, social and environmental factors, availability of utilites, atmospheric conditions, hazards, coordination with other airports.

단일전극을 가진 마이크로 가스센서의 제작 및 특성

송갑득,박영일,이상문,이윤수,최낙진,주병수,서무교,허증수,이덕동 한국센서학회 2002 센서학회지 Vol.11 No.6

센서의 안정도와 감도를 개선시킬 수 있는 단일전극을 가진 열선형 마이크로 가스센서를 제작하였다. 일반적으로, 금속산화물 반도체를 이용한 가스센서는 히터전극과 감지전극의 두 개의 전극을 가지고 있다. 제작된 센서는 히터전극위에 감지물질을 형성하여 단일 전극을 가지는 구조를 가지고 있다. 히터와 감지전극으로 사용되는 Pt는 glass 기판위에 스퍼터링법으로 형성하였으며, SnO_2 감지물질은 제작된 Pt 전극위에 열증착시켜 형성하였다. SnO_2막은 lift-off 공정을 이용해서 패턴을 형성하고 1시간 동안 산소분위기에서 열산화하였다. 제작된 소자의 크기는 1.92x.1 mm^2 이다. CO 가스에 대한 감지특성을 조사한 결과 1,000 ppm에 대해 100 mV의 출력변화를 나타내었으며, 넓은 농도범위(0 ~ 10,000 ppm에서 선형적인 전압출력을 나타내었다. 또한 가스 반응 전과 반응 후의 전압출력을 비교해 볼 때, 1 % 이내의 편차를 나타내는 우수한 회복성을 나타내었다. Micro gas sensor with single electrode was proposed for improving stability and sensitivity, Generally, metal oxide gas sensors have two electrodes for heating and sensing. This fabricated new type sensor have only a single electrode by forming a sensing material onto heating electrode. Pt as a heating and sensing electrode was sputtered on glass and a SnO_2 sensing material was thermally evaporated on Pt electrode. SnO_2 was patterned by lift-off process and then thermally oxidized in O_2 condition for 1 hr., 600 ℃. The size fabricated sensor was 1.9 x 2.1 mm^2. As a result of CO gas sensing characteristics, this sensor showed 100 mV change for 1,000 ppm and linearlity for wide range(0 ~ 10,000 ppm) of gas concentrations. And the sensor shows a good recovery characteristics of 1 % deviation compared to initial resistance.

대퇴골두 골괴사를 동반한 슬관절 골괴사 : 증례 보고

송준민,이병일,나수균,신영수,최창욱,박종석,권희 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.1

본 순천향대학교 의과대학 정형외과학 교실에서는 2명의 환자에서 발견된 대퇴골두 골괴사와 함께 발생한 양측 슬관절 골괴사를 경험하였기에 보고하는 바이다. 대퇴골두 골괴사가 있는 환자에서 슬관절 동통을 호소하는 경우 연관통 등으로 여겨 간과하기 쉬우며, 대개 고관절의 통증으로 체중부하 보행이 어려운 경우가 많아 통증이 약하게 나타나기도 하기 때문에 관심을 가지고 슬관절 골괴사를 동반하는지 여부를 판단하여야 할 것이다. Osteonecrosis of the knee associated with osteonecrosis of the femoral head was very rare and reported cases were quite rare. We have experienced two cases of osteonecrosis of both knees associated with osteonecrosis of the femoral head. One is a 44-year-old man who had avascular necrosis of the righ femoral head and osteonecrosis of both knees, femoral condyle and metaphysis of proximal tibia. Another case is a 39-year-old man who had osteonecrosis of both femoral head and osteonecrosis of the both knees, medial condyles of both tibias. They were treated with total hip replacement arthroplasty for avascular necrosis of the femoral head and conservatively for osteonecrosis of the knee. If a person complains of pain in hip and knee simultaneously, we should pay attention and rule out osteonecrosis of the knee.

응급실에서 급성 췌장염 환자의 선별을 위한 actim pancreatitisR검사의 유용성

송석훈,도병수,이삼범 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: Acute pancreatitis is a fairly common abdominal disorder that can be easily confronted in the emergency department(ED) and is one of the most complex and clinically challenging of all abdominal disorders. Currently, there is no gold standard for the diagnosis of acute pancreatitis. We evaluated the usefulness of the actim Pancreatitis□ rapid test, which has been recently developed in Europe, as a screening test of acute pancreatitis in our emergency department. Methods: We prospectively studied the urinary trypsinogen-2 dipstick tests(actim Pancreatitis□, Medix Biochemica, Kauniainen, Finland) of 200 patients with acute abdominal pain who were treated at our ED. All urine samples were collected from the patients within 12 hours of arrival at ED. We also measured serum amylase assay in the laboratory and compared the sensitivities and the specificities of the two test. Acute pancreatitis was diagnosed by authors according to standardized criteria. Abdominal USG or CT was performed when a patient with a normal serum amylase level had a typical clinical presentation. Results: The actim Pancreatitis□ rapid test was positive in 22 of the 25 patients with acute pancreatitis(sensitivity, 88.0 percent). The test was also positive in 6 of 175 patients without pancreatitis(specificity, 96.6 percent). The serum amylase assay had a sensitivity of 68.0 percent(with a cutoff value of 300 U per liter for the upper reference limit) and a specificity of 90.9 percent. But there were no statistical differences between the correlation coefficients of the two tests as diagnostic tool Conclusion: In patients with acute abdominal pain who are seen in the emergency department, the actim Pancreatitis□ urinary dipstick test has a high degree of probability as a screening test for acute pancreatitis. Also it can easily and rapidly be use at the bedside.

xHTML을 이용한 화상감시 시스템 구현

송병만,오미진,강정림,정경택,정동수 국립7개대학공동논문집간행위원회 2001 공업기술연구 Vol.1 No.-

In this paper, reflex RGB data captured from WebCam is stored to HDD through USB port at every 5 seconds intervals. Also, if strangers are detected through Motion Detection routine, warning voice message is broadcasted and invasion message is transmitted by e-mail and transmit the e-mail title to mobile phone through WAP(Wireless Application Protocol) Push. The detected image is stored to hard-disk in 'month - day - hour - minute - second . jpg' data type. And the image data is transmitted to web server through FTP(File Transfer Protocol) because invader can deletes or destroys the image data on hard-disk. We implement a surveillance system which is able to utilize through internet regardless of time and space.

백서의 복강내에 투여한 Mitomycin-C-Polyglycolic acid 제형이 장기에 미치는 영향에 관한 연구

송규상,강대영,최정목,노승무,정경수,오정연,김진향,양준목,최선웅,이진호,조준식,민병무,김용백,김창식,박근성,김승영,김학용,인현빈 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

To evaluate the in-vivo effects of mitomycin-C-polyglycolic acid composite(MMC-PGA) the disk: shaped composite were implanted into the peritoneal cavity of the Sprague-Dawley rats. The pathologic changes were examined at various time points up to 12 weeks. Initially the soft tissue around the inserted disks showed capillary congestion at 3 days. Inflammatory infiltrates with foreign body giant cells appeared from the 2nd week and reached peak response at 6-8 weeks. These reaction diminished prominently at 12 weeks. No specific pathologic change was found in the liver, the kidneys, and the heart. The above results suggest that the MMC-PGA composite can serve as a new device for intraperitoneal chemotherapy of various types of cancers.