• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.10
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• pp.597-602
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• 2017

A method is proposed to secure the reliability of the antibacterial test method for textile materials used in the military. Antibacterial activity refers to the inhibition of bacterial growth and removal of harmful bacteria. Through KS K 0693 'Antibacterial Test Method for Textile Material', it is considered that there is a high possibility of error due to the human eye measurement. Therefore, the measurement reliability is improved by applying the image processing. As a result of the measurement, the proposed method showed a difference of about 0.9% compared with the results by conventional test method. The proposed method has the merits that the reliability can be secured by eliminating the error of the measurer, and the measurement time can be reduced.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.29 no.3
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• pp.232-241
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• 1984

A series of experiments were carried out to know the effects of pollen stage, cold shock temperature and duration, and media for callus and green plant induction in rice anther culture. The results indicated that: (a) uninucleate stage of pollen was the most suitable stage for effective callus induction, (b) cold shock temperature of 8$^{\circ}C$ and 12$^{\circ}C$ was appeared to be proper temperature for callus induction, (c) callus induction rate was increased in the eight to 12 days long cold storage, (d) the medium N6 was better than that of N6D for callus induction, (e) green plant induction was better in both 4$^{\circ}C$ and 8$^{\circ}C$ than that of 12$^{\circ}C$ cold shock, (f) green plant frequency was higher in eight to 12 days long cold storage and (g) green plant frequency was doubled in the MS medium when compared with N6 medium.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2017.05a
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• pp.933-935
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• 2017

This paper deals with the influence of fungi for the thermal protective cork-based exterior insulator which protect a missile system from aerodynamic loads and heating during flight of missile. We consider the adhesion of cork-based composite on the composite motor case which fabricated by filament winding process. We also consider the importance of the requirement analysis for effective, successful system development under given system conditions. In order to develop the basic requirement analysis for the thermal protective cork-based exterior insulator, an experimental requirement analysis was accomplished, and some experimental comparing results, the study for preventing fungi are presented.

• Journal of Life Science
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• v.16 no.7 s.80
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• pp.1141-1147
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• 2006

This study was carried out to establish a reproducible culture system for callus formation and adventitious shoot development from young stem segments of Vigna radinta, and histological work for orgin of callus tissue and adventitious shoot. Induction of callus from young stem explants of Vigna radiata was very effective on MS inorganic salts supplemented with 0.5 mg/L 2,4-D and 1.0 mg/L kinetin. For the adventitious shoot regeneration from the callus tissues, the hormone combination of 0.75 mg/L NAA, 1.5 mg/L kinetin and MS salts resulted in about 21% efficiency. Histological examination showed that callus tissues originated from out-growths by callus cambium rings with do novo meristematic activities, which were localized at the outside of the vascular cambium. Adventitious shoots were developed from shoot apical meristem originated from the surface of callus masses. The shoot apical meristem produced leaf primordium, which then became leaf.

• Journal of the Korea Convergence Society
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• v.13 no.5
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• pp.35-43
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• 2022

It was to test the efficiency of essence containing scalp derived Leuconostoc mesenteroides extract on relieving hair loss and the possibility of the usage as the functional cosmetic's material. 41 subjects were classified as the control and test group and for 24 weeks, from Apr. 15th 2021 to Nov. 4th 2021, they were double blindness, contrast samples, single organs, and randomized human applicating tests were performed. The amount of hair had meaningful change (p<0.001) seen through phototricogram in 8,16,24 weeks each, and could tell the difference by researcher's bare eye after 24 weeks. Since there were meaningful changes (p<0.017) in subjective evaluation of the subject on after 8,16,24 weeks time, Essence which contains 1% of L. mesenteroides has efficiency on hair loss. Therefore, L. mesenteroides is expected to be used as various cosmetics to prevent hair loss.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.49-56
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• 2023

The purpose of this study is to develop convergence major-based learning (CMBL), which selects performance tasks related to local problems at hand and solves them based on convergence major performance, and builds a suitable teaching and learning model. We developed a CMBL class with a team project-type class that finds and solves practical problems in the region to cultivate overall problem-solving capabilities for convergence major competencies. Additionally, for this class, the instructor played a role as a bridgehead to explore and connect the community's sites, and students visited connected institutions in person to identify problems they need based on understanding and empathy for the subjects through field observation and qualitative interviews, and developed a CMBL class teaching and learning model necessary to directly solve them by using their major capabilities to the fullest. Therefore, we intend to present the future-oriented direction of university convergence education required by the community by forming a group of students with various majors to cultivate the ability to solve realistic problems in the community.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1982.05a
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• pp.5.2-5
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• 1982

With the improvement of living standard and socioenvironmental change, esophageal stricture due to acetic acid, Hcl, insecticides and lye has led to decrease remarkably. Esophageal stricture has decreased because of immediate treatment and adequate management. However there are still sporadic incidents of esophageal stricture due to inadequate treatment and uncooperation of patients. The authors recently have experienced seven severe cases of esophageal stricture. All six patients were treated with 18-51 French Sippy esophageal dilating bougie. One patient was transfered to thoracic surgery department due to complete esophageal obstruction. Case 1. A 23 year old housewife who ingested Hcl for suicide. After Witzel's operation, she visited to dilate esophageal first constriction stircture due to swallowing difficulty postoperation 2 months later. We were treated successfully. Case 2. A case of esophageal stricuture in the second and third physiologic constriction part. The patient was 51 years old man who ingested lye accidently, and was dilated by bougination. Case 3. The patient was 43 year-old man who ingested acetic acid as a mistake and was treated inadequately at hopsital. Inspite of treatment, esophageal stricture developed at the third physiologic part. We are trying to dilate the esophagues now. Case 4. The patient was 55 year-old woman who had ingested Hcl for the purpose of suicidal attempt. 2 months later gastroduodenal anastomoisis due to pyloric region stenosis, the first physiologic constriction stricture was dilated successfully. Case 5. The patient was 41 year-old woman who ingested Hcl for suicide 4 months ago. There was indwelled orogastric tube for 1 month but esophageal stricture developed at the first and 3rd constriction part. She was treated by using a bougination. Case 6. An athlete 21 year old man, ingested acetic acid 2 spoonful per 3 days by purpose in order to soften the bone for last 14 months. There was complete esophageal obsturction in esophagogram and transferred to the thoracic surgery department. Case 7. A 3 year-old girl was ingested lye at a accident. She had a bougination for 16 months under the general anesthesia for dilation due to whole irregular esophageal stricture. She developed lower esophageal perforation, but healed eventually.

• The Journal of the Korean life insurance medical association
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• v.25
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• pp.49-62
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• 2006

생명공학의 시대로 일컬어 지고 있는 오늘날, 재생의학 분야에서는 난치성 질환 치료를 목적으로 활발한 연구가 진행되고 있다. 특히, 줄기세포를 이용한 세포 대체치료 관련 연구는 최근 국내 황우석 박사의 체세포 핵이식 배아세포주 확립에 이르기 까지 괄목할 만한 발전을 보여 주고 있다. 이와 관련해 생명보험산업에 적잖은 파장이 예상되며, 생명보험사 내부적으로 기존에 판매된 상품의 사차손 관리와 함께 급속도로 발전하는 줄기세포 연구에 직접적으로 대응하는 상품개발, 언더라이팅, 지급 심사 등 보험사 내외에서의 전방위적인 변화가 필요하다는 문제 제기가 있다. 줄기세포란 조직 분화 과정에서 볼 수 있는 세포이며 근육 뼈 뇌 피부 등 신체의 어떤 기관으로도 전환할 수 있는 만능세포로서, 간 폐 심장 등 구체적 장기를 형성하기 이전에 분화를 멈출 배아 단계의 세포를 말한다. 한편, 성체줄기세포는 조직이나 기관의 분화된 세포들 사이에서 발견되는 미분화 세포로써, 자기 스스로 증식할 수 있으며, 조직이나 기관의 특수한 기능을 가지고 있는 세포로 분화할 수 있는 능력을 가진 신체줄기세포를 말한다. 배아줄기세포와 생체줄기세포를 통한 장기이식 등 난치병 정복은 윤리적, 사회적으로 많은 논란이 예상되며, 기술적으로도 해결해야 할 문제점들이 산적해 있기 때문에 아직은 요원한 것이 사실이다. 현재 유럽 대부분의 나라와 미국에서는 인간 배아의 복제가 금지되어 있으며, 일본 정부는 연구용 배아 복제를 제한적으로 허용하고 있다. 하지만, 우리 나라의 경우 2005년 1월에 '생명윤리 및 안전에 관한 법'이 발효되었지만 정부는 관련 부작용에 대한 깊은 고찰 없이 전폭적인 지원들 약속하고 있는 실정이다. 줄기세포 연구의 발달로 인해 인류가 난치병 치료의 첫 장을 열었다고 하더라도 그 영향이 당장 보험사에 미친다고 할 수는 없다. 왜냐하면 앞으로 이러한 신기술이 실제 의료행위에 적용되기 위해서는 여러 단계의 안정화 작업과 임상시험이 필요한데 이러한 작업이 기술적으로 어렵고 그 시간도 만만치 않게 걸리기 때문이다. 또한, 보험사의 보장은 크게 사망/수술/입원/암/기타보장으로 구별할 수 있는데, 줄기세포 연구의 발달과 관련이 있는 보장이 제한되어 있어 보험사에 미치는 영향이 당장 우려할 만한 수준이라 할 수 없다. 하지만 만약 치료용 줄기세포 배양으로 인한 장기 기관의 이식이나 손상세포의 대체 등과 같은 의학신기술의 예상 외로 급격하게 발전한다면 보험사의 Risk 관리에 상당한 저해요인으로 작용할 것으로 판단된다. 특히 진단 입원 수술로 대표되는 생존보장에 대한 사차 Risk 및 사차손의 급증이나 역선택 증가는 보험사의 경영수지 악화를 유발하여 보험산업 전반에 위험으로 작용할 수도 있다. 따라서, 장기적인 안목으로 업계 공동의 대응이 필요하고, 각 사에서도 상품개발, 언더라이팅, 지급심사 간의 긴밀한 협조가 요구된다. 생명보험산업의 Risk 관리는 기존의 시장환경에 영향을 받는 비차, 이차중심에서 보험회사가 어느 정도 관리를 통해 적정규모를 유지할 수 있는 사차로 그 중심축이 이동하고 있다. 보험산업이 계속 활력을 갖고 성장하기 위해서는 체계적인 Risk나 관리가 핵심일 것이며, 보험사의 사차 Risk의 중요성이 더욱 커져 가고 있는 현실에서 거시적으로 의학신기술 발달 등 위험요인에 대해 미리 분석하고 이에 대한 대비책 마련이 필요할 것으로 판단된다.

• Korean Journal of Clinical Laboratory Science
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• v.48 no.2
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• pp.130-136
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• 2016

The aim of this study was to examine and analyze the infection management status of Jeju-area general hospitals, and in order to convey the importance of infection management, and to determine role plans of medical technologists as infection management staff, the infection management status was examined through surveys targeting 7 general hospitals located in Jeju Special Self-Governing Province. The infection management of Jeju-area medical institutions showed excellence in that all institutions operated an infection management room, there was dedicated manpower, and hospital infection management guidelines were established and executed. However most institutions were operating their infection management room with only 1 nurse, reporting many difficulties in securing dedicated manpower, microbe-related culture deciphering, frequency of multiple-resistance bacteria, infection statistics, and details on microbe testing. Accordingly, it is believed that the medical technologist who can perform the practical tasks of infection management has sufficient qualification and experience in infection management as per the medical law enforcement regulations, and in operation of an infection management room. If medical technologists (infection control microbiological technologist) with expert knowledge on microbes and infection control nurses can execute the tasks as dedicated personnel, the operation of the infection management room will be more advanced. In addition, for proper infection management in the future, the introduction of a medical system specialized in infection management and full support for infection management of vulnerable small/medium hospitals in addition to general hospitals across the country is considered important.

• Korean Journal of Agricultural Science
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• v.12 no.2
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• pp.174-182
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• 1985

In order to obtain information necessary for attaining maximum yield of rice by increasing nitrogen efficiency, effects of top dressing of nitrogen fertilizer at the later part of growing season were investigated and results obtained are summurized as follows: 1. The increased application of nitrogen fertilizer was very effective in increasing leaf areas and net assimilation rate of rice plants. The spikelets number per hill was also increased due to heavy nitrogen fertilizer. 2. The concentrated top dressing at the later part of plant growth apparently increased the crop growth rate at the reproduction stage and ripening stage of rice, respectively. The nitrogen efficiency was greatly improved by the concentrated top nitrogen dressing through the increase of effective tiller number and the improvement of production organ to non productive organ ratio. 3. The concentrated top nitrogen dressing at the later growing season was considered to be one of the most effective methods of fertilizer applications as well as cultivation of fertilizer resistant varieties for the high yield of rice and improving soil fertility.