• 한국잠사곤충학회지
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• 제41권1호
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• pp.1-8
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• 1999

장명품종(SA10, NTZN, 잠109, J037 및 설악)과 단명품종[한강, 괴축, PR, 천문 및 Daizo(sdi)]의 幼蟲, 용, 成蟲의 발육단계별 및 암수별 체액단백질의 변화과정을 전기영동상의 패턴에 의해 비교 분석하였다. Native 전기영동상 분석 결과로 볼 때, 용 1일째의 體液 蛋白質은 MHP-a, b, c 패턴에 따라 長命特異群(MHP-Ⅰgroup), 短命特異群(MHP-Ⅱgroup) 및 張${\cdot}$短命混合群(MHP-Ⅲgroup)등 3개의 단백질 유형으로 분류할 수 있었다. MHP-Ⅰgroup에는 SA10, 잠109, J037이, MHP-Ⅱgroup에는 한강, 천문, Daizo(sdi)가, MHP-Ⅲgroup에는 NTZN, 설악, 괴축 및 PR의 품종들이 각각 분포하고 있었으며, 이들 group내 소속 품종의 MHP패턴은 거의 유사하였다. 그리고 이들 MHP-a, b, c는 용의 발육에 따라 영동상의 변화를 보였다. 최단명품종인 Daizo(sdi)의 경우, 성충 1일 암컷과 수컷 모두 MHP-c가 뚜렷하게 존재하는 반면 최장명품종인 J037에서는 이 단백질이 관찰되지 않는 등 성충 체액 단백질 패턴에 있어서 J037과 Daizo(sdi)의 품종간에 뚜렷하게 차이가 인정되었다. 그러나 이들 단백질 밴드상의 수명의 장${\cdot}$단과 직접적인 관계가 있는 것인지 또는 수명과 관련된 특정 단백질 밴드가 존재하는지 등에 대해서는 앞으로 추구할 연구과제로 남는다. 한편, 최장명 J037품종과 최단명 Daizo(sdi) 품종의 체액단백질에 대한 SDS-PAGE상의 영동패턴을 비교 분석 결과, 幼蟲期, 용期 및 成蟲期에 있어서 장${\cdot}$단명 품종간에 단백질 패턴의 차이보다는 양적인 변화가 뚜렷하였다.

• 대한조선학회논문집
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• 제60권2호
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• pp.65-75
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• 2023

Ships operated at sea for a long time are subjected to various kinds of loads, which may cause various types of damage. Such damages will eventually reduce the strength of hull structures. Therefore, it is necessary to estimate and evaluate the residual strength and remaining fatigue life of aging ships in order to secure structural safety, establish a reasonable maintenance plan, and make a judgment of life extension. For this purpose, the corrosion damage and local denting damage should be measured, fatigue damage estimation should be performed, and material properties of aged steel should be identified. For this study, in order to investigate the mechanical properties of aged steel, steel plates were obtained from a naval ship that reached the end of her life span. The specimens were manufactured from the obtained steel plates, and static and dynamic tensile tests, fatigue tests, and metallographic tests were performed. The mechanical properties obtained from the aged steel plates were compared with those of new steel plates to quantify the aging effect on the mechanical properties of marine steel materials.

• Advances in concrete construction
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• 제5권4호
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• pp.303-311
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• 2017

The concrete industry of developing countries like India consumes majority of natural resources. The increase in population has necessitated the construction of more and more structures. Further many structures have completed their life span or have undergone damages thus warranting the demolition of these structures. India produces approximately 23.75 million tons of recycled concrete aggregate (RCA) annually. The natural resources are depleting at a higher rate with the increasing demand of concrete industry. This difficulty can be reduced with the use of RCA in land fill and concrete manufacturing. Use of RCA can provide cost savings and better energy utilization. This paper presents mechanical behavior of concrete comprising successively recycled concrete aggregate. Mechanical properties of recycled concrete get affected with number of recycling. In mix design successive recycled concrete aggregate (SRCA) was used in place of natural aggregates (NA) with 100% replacement. The test results of the compressive, flexural strength and pulse velocity were obtained for 14 and 28 days of curing age which showed significant improvement in results.

• 한국생산제조학회지
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• 제20권1호
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• pp.60-66
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• 2011

In this paper, the computer simulation analyzed the effective plastic strain and temperature behaviors. The quantitative analyses which proposed the effective mold design of S/CAM shaft was executed. The parameters of forging shape that affected on the optimize conditions that was calculated with simple equation were investigated. it is expected that the developed analysis model and design technique would greatly contribute to the drum brake optimal design considering effective plastic strain and temperature affected behaviors. This development could save more than 20% of production cost and reduced failure rate to more than 30%. By improving the life span of mold from 15,000 to 25,000, financial difficulty of company imposed on a mold manufacture could be overcome.

• 한국식품과학회지
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• 제35권3호
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• pp.479-482
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• 2003

동과자 열수 추출물의 in vitro 항암효과는 2 mg/mL의 농도에서 가장 높게 나타났으며 in vivo 상에서의 0.1 g/kg, 0.01 g/kg의 경구 투여시 각각 21%, 17%의 생명연장율(increased life span, ILS)을 나타내었다. SK-OV-3에 대한 SRB assay를 이용한 열수 추출물(2 mg/mL)의 방사선(5 Gy) 병용 투여에 있어서 86%의 저해효과를 나타내었다.

• 반도체디스플레이기술학회지
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• 제7권1호
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• pp.59-65
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• 2008

There are no products, systems to manage health and detect security for infant, the old and the weak in Korea. Recently, the concerns of parents are increasing more about all of children(baby, infant, etc) because rate of birth is decreasing gradually. Also, the average span of human life is on an increasing trend according to well-being and evolution of medical treatment. Therefore, this treatise analyzed problems in managing and following-up infant, the old and the weak at present. By using TRIZ to solve problems, we devised new conceptional ideas, detail designs to manage health, detect security, cope with correspondences for them and developed the prototype and tested it. Excellent performances are proved through various field test.

• Journal of Contemporary Eastern Asia
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• 제15권1호
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• pp.78-97
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• 2016

Living labs are an increasingly popular methodology to enhance innovation. Living labs aim to span boundaries between different organizations, among others Triple helix actors, by acting as a network organization typically in a real-life environment to foster co-creation by user-groups. This paper presents critical factors of Living labs in boundary-spanning between Triple Helix actors. Derived from a mixed-method approach and applications in the healthcare sector, the three main critical factors turn out to be 1) an adequate user-group selection and involvement, specifically a rich interaction and absorption of its results, 2) a balanced involvement of all relevant actors, and 3) a sufficient (early) attention for values, both values of user-groups and values of the management. People-oriented Living labs tend to differ from institution-oriented Living labs regarding these critical factors. Further, universities tend to take on diverse roles and strength of involvement, while the business sector tends to be actively involved only if this has been set as an explicit aim at start. The paper closes with a summary and future research paths.

• 전기학회논문지
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• 제60권3호
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• pp.662-668
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• 2011

Domestic rail industry for the development of Korea High Speed Rail paid for high technology, imported to Korea. However, If technology based on conditions that are not equipped with relevant skills is received, there are limits to what it used to. so team of high speed railway began technical development. In this study, through the motor block resistant plan, the current block resistant identifies problems related to it, in order to improve the quality of the parts, secure the standards and guarantee their life span. The localization of the resistant is really possible thanks to the technical skills.

• 한국건축시공학회지
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• 제2권2호
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• pp.121-127
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• 2002

The functions and uses of existing buildings are not properly changing as modern life needs. As a result, the frequent reconstruction(construction after removal) of existing buildings have been done but it became more and more difficult because of strengthening of regulations and systems concerning construction. And also it has several disadvantages like lower plot ratio and site coverage than existed buildings, enormous construction cost, production of waste-construction materials and thoughtless consumption of natural resources, which gives rise to environmental pollution. Therefore renovation is brought to the fore. In Korea, many business buildings were constructed in 1960s-1970s, during the period of high growth. Such buildings needs to be repaired in whole. It is caused by the change of social, economic, and cultural conditions and deterioration of equipments. Therefore renovation meets some necessary conditions; recovery of building functions and extension of building life span. In case study, the present state of renovation in business buildings is 1) Basic safety, for example, fire prevention and crime prevention, is great important. 2) Advanced technology, INS(international news service), IBS(Intelligent Building System), and internationalization, is pursued for adapting to multimedia ages. 3) It tries to promote proficiency, and to save the energy using spatial environment and natural energy(light and sound). Also, improving comfortable level of users and installing equipments for physically handicapped person needs to be considered.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2018년도 추계학술대회
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• pp.166-167
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• 2018

정보통신기술 발전에 따라 일반 사용자들의 생활의 편리성이 많이 향상되고 있다. 또한, 정보통신 기술에 의한 건강 측정과 관리가 인간의 수명을 증가시켜주고 있다. 이에 따라 건강에 대한 관심 증가와 함께 이상 증상에 관한 일반인들의 관심도도 증가되어지고 있다. 이에 본 연구에서는 신체 이상증상에 따른 건강을 관리하기 위하여 다리의 이상증상에 관한 연구를 진행한다. 특히, 하지정맥류 이상증상을 측정하기 위한 장치개발에 관한 내용에 관하여 살펴본다.