• Journal of Ginseng Research
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• v.14 no.2
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• pp.285-290
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• 1990

Ando et al found the root of Ginseng contained an active peptide which had anti-lipolysis funrtion when they studied effective components of Ginseng to cure diabetes mellitus in 1980. In recent years we were making lots of the researches on the Ginseng polypeptide. We obtained a 14 peptide which could decrease levels of blood sugar and hepatic glycogen. However, amino acid composition of the peptide differs from one reported by Ando et al. The results of its purification, structure and functure and function were reported in this paper.

• Journal of Life Science
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• v.18 no.6
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• pp.759-763
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• 2008

Halophila ovalis (R. Br.) Hook. fil. was first collected from the Ando, Yeosu, Korea in 2007. H. ovalis is Widely distributed from sub-tropical to even tropical areas and produces the seeds using bisexual reproduction. Its leaf shape was oblong to ovate. Its leaf blades were rigid in texture, with a strong support to the leaf. Erect shoots arose at irregular intervals along the rhizome. The distance between the intramarginal vein and leaves margin was small. Nucleotides in ITS 1 and ITS 2 regions between the Korean and Japanese H. ovalis were found to be 100% similar, whereas Korean H. ovalis was found to have four nucleotides in the positions of 202 bp to 206 bp for 5.8S. In the analysis of the phylogenetic relationship using NJ method, Korean H. ovalis had a monophyletic genetic tree with Japanese H. ovalis, but no phylogenetic relationship with types from the Philippines, Australia, Malaysia, and Vietnam. The first occurrence of H. ovalisin Korea was associated with a strong migration of gene flow from Japan and high water temperature caused by the variations in climate.

• Journal of Ocean Engineering and Technology
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• v.35 no.5
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• pp.327-335
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• 2021

Microcracks can rapidly grow and develop in high-strength steels used in offshore structures. It is important to render these microcracks harmless to ensure the safety and reliability of offshore structures. Here, the dependence of the aspect ratio (As) of the maximum depth of harmless crack (a_hlm) was evaluated under three different conditions considering the threshold stress intensity factor (Δk_th) and residual stress of offshore structural steel F690. The threshold stress intensity factor and fatigue limit of fatigue crack propagation, dependent on crack dimensions, were evaluated using Ando's equation, which considers the plastic behavior of fatigue and the stress ratio. a_hlm by peening was analyzed using the relationship between Δk_th obtained by Ando's equation and Δk_th obtained by the sum of applied stress and residual stress. The plate specimen had a width 2W = 12 mm and thickness t = 20 mm, and four value of As were considered: 1.0, 0.6, 0.3, and 0.1. The a_hlm was larger as the compressive residual stress distribution increased. Additionally, an increase in the values of As and Δk_th(l) led to a larger a_hlm. With a safety factor (N) of 2.0, the long-term safety and reliability of structures constructed using F690 can be secured with needle peening. It is necessary to apply a more sensitive non-destructive inspection technique as a non-destructive inspection method for crack detection could not be used to observe fatigue cracks that reduced the fatigue limit of smooth specimens by 50% in the three types of residual stresses considered. The usefulness of non-destructive inspection and non-damaging techniques was reviewed based on the relationship between a_hlm, a_NDI (minimum crack depth detectable in non-destructive inspection), a_{cr N} (crack depth that reduces the fatigue limit to 1/N), and As.

• Korean Institute of Interior Design Journal
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• no.16
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• pp.126-134
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• 1998

In Contemporary architecture we could find rough and stiff feeling expression as a special phenomena. This style is combined regionalism to the modern spirit that we could imagine such a phenomena of the modern design toward vernacular culture. it's conception is conformed to the regionalist architecture in that period and the 3rd world experiences, From 1930s resident house Le corbusier introduced vernacular phenomena that considered productional condition of the region and regional environment This tendancy attempted by few young architects. they built building in vernacular phenomena based on the 3rd world experiences and Le Corbusier's architecture. After Le Corbusier's unite d'hbitation in Marseille Ando finishing with diversified material. but Le Corbusier's intention concerned not only to finishing of material but also to practical and human building as he had experienced in vernacular architecture.

• Korean Institute of Interior Design Journal
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• no.16
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• pp.106-115
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• 1998

Latest modernism shows general idea of phenomenal space through nature of place motility and experience sinceded from standard form and it has general idea of space. therefore this study presents the tension and the relaxation as a method looking for spatal change and value that in spatial experience. For the analysis of work the Conference Pavillon of Tadoa Ando in the furniture company in Vitra Fire Station of Zaha Hidid is analyzed in spatial experence. As the result the result the systematic straight mixture that has a superrimotion with long retangle which the space acts independently and is shown in the drawing of absolutism is formed and collapses theregularity of construction form by decomposition annexation mixing collision and ambivalence. The spatial experiance in this unstable form changes the grade of rank of space by opposite phenomenon by the change of spatial flowing the disorted and vague space that is occurred by superrimotion which has no direction and change of lirht and place and consolidates dynamic strain makes possible to construct against the gravity. And it also creates experienced space thatis reaxed with maintenance of organization of unity harmony, and stsbility.

• Proceedings of the Korean Magnestics Society Conference
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• 2003.12a
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• pp.87-87
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• 2003

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 2002.10b
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• pp.57-58
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• 2002

Asperity arrays and Independent asperities were fabricated on a silicon plate. Then pull-off and friction forces were measured on each asperity pattern by using AFM (atomic force microscope) in humid air and high vacuum of $2{\times}10^{-5}$ Pa. The probe of AFM cantilever has a flat square of about $1\;{\mu}m^2$ on its tip. The results showed that the pull-off force was proportional to the curvature radius of asperity peak in each ambient condition. The friction force was proportional to the pull-off force and was slightly higher in the humid air than in the high vacuum.

• KDI Journal of Economic Policy
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• v.11 no.3
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• pp.131-146
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• 1989

본고(本稿)에서는 가계(家計)의 저축행태(貯蓄行態)가 일생적기(一生適期)(life cycle)에 걸쳐 연령(年齡)-자산관계(資産關係)(age-wealth profile)를 통해 어떻게 나타나는가를 이론적으로 그리고 미시적(微視的) 시뮬레이션의 결과로 살펴보았다. 본고(本稿)에서는 기존의 Ando-Modigliani의 모형(模型)에 성인상당수(成人相當數)라는 개념(槪念)을 도입(導入), 무자녀가구(無子女家口)와 유자녀가구(有子女家口) 사이에 자산저축경로(資産著畜經路)의 차이가 존재함을 밝혔다. 즉, 유자녀가구(有子女家口)의 경우, 자녀의 교육비를 지원함으로써-좀 더 정확히 표현하면 또다른 형태의 세대간교부(世代間交付)(intergenerational transfer)라고 할 수 있는 자녀의 인적자산형성(人的資産形成)에 투자함으로써-소비(消費)가 이 시기에 급상승하게 되고 따라서 자산저축(資産著畜)이 무자녀가구(無子女家口)의 경우보다 완만해질 수 있음을 밝혔다.

• Proceedings of the KIPE Conference
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• 2001.10a
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• pp.232-235
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• 2001

This paper presents a circuit of the quasi-resonant DC link to achieve soft-switching three phase inverter using intelligent IGBT power module. The soft-switching operation in this circuit is confirmed simulation and experimental results. Its conductive noise is measured for electrical AC motor drive as compared with that of the conventional hard switching inverter.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.26 no.4
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• pp.380-386
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• 1990

The high stress, low cycle fatigue test were carried out on HT80 plates with artificial part-through notch. The LBB conditions by the net section stress approach was examined in detail. Finite element methods for the state of deformation were also applied and the results were compared with the results from experiments. From the test results, it was noted that the LBB condition in fatigue test was dependent upon the maximun load change before and after the crack penetration. The LBB criterion By the net section stress approach were slightly dependent on initial crack size. It was shown that the state of deformation can be used to predict whether the component is likely to show LBB condition or they will be broken rapidly.