한국전통건축의 柱上部 部材値數 比例와 營造體係로 고찰한 처마내밀기 치수 결정에 관한 연구

高永勳 慶尙大學校生産技術硏究所 1999 生産技術硏究所論文集 Vol.15 No.-

A study on the proportion system of Korea traditional architecture based on the surveying data is one of the basic method in clarifying its characteristics quantitatively. Moreover it is a fundamental work in finding out its construction system. The purpose of this study is to show an objective method of study on the proportion of members and the construction system. According to the summary of the former study, the construction system of Korean traditional architecture is different from the others. The construction system of Chinese and Japanese traditional architecture is decided by the modular member based on a primary and uniform proportion system. But, in Korea, each member is decided by pre-decided member dimension. Therefore its proportion system is complex and various. Especially this appearance is notable in DA-PO system than in CHU-SIM-PO system.

韓國 傳統 기와지붕의 曲線美에 關한 硏究

高永勳 慶尙大學校 1985 論文集 Vol.24 No.1

Conclusions are as follows, analysis on the beauty of traditional tile roof curved line, in Korea and Japan. 1, The curved line of roof is determined by structural system and then it is changed slowly by related proportion of structural members. 2. The characteristic of curved line of eaves, Korean roof is smooth from center to corner, but Japanese is unsteady and curved up suddenly nearby corner. 3. The ratio to horizontal elements are integral and the ratio of horizontal to vertical elements are shown the Golden-section.

韓國建築의 樣式論에 關한 硏究(I) : 樣式의 基礎槪念 : 建築史에서의 樣式 槪念의 適用

高永勳 慶尙大學校生産技術硏究所 1989 生産技術硏究所論文集 Vol.5 No.-

This study is one of method to solve problem of style in Korean architecture that is not interpretation, with concepts of style is applied to explain of characteristics of each period, region and school in philosophy and cultural history. Second chapter has been considered concepts of style different from view of point. Third chapter has been explained to a certain problem when it has applied in Korean architecture. It is first, a Period-View of Time. second, a National Land and Race-View of Space, finally, a School View of Tradition. In conclusion, architecture should not considered special one or two concepts of style and not only considered artistic upper levels' architecture but also rustic low levels' architecture, because architecture is formed all of Society, culture and skill.

東 ·西洋 中世 宗敎建築物의 지붕構造 및 造形性에 關한 硏究

高永勳 慶尙大學校 1984 論文集 Vol.23 No.2

The religion arcritecture of the Middle Ages in the East and the West widely offected other archecture Conclusionsof analysis on the roof construction and modeling of religion architecture in the East and the West are as follows. 1. The shape of roof is determined by construction method and then it is changed, in the between aspects of space begined by religion. 2. The Construction of roof is resulted from materials while the Masonry Construtcion tend to control the Post-Litel Construction in the West, and in the East Post-Lintel construction is not change at all times. 3. Both of the East and the West, the shape of roof is changed slowly viual spirtualization by process of abstraction. For example the Plane is expressed the Line, and the Line is expressed the Point.

韓國과 日本의 原始住居 形態에 關한 硏究(Ⅰ) : 韓國의 原始住居 形態에 關하여

高永勳 慶尙大學校生産技術硏究所 1992 生産技術硏究所論文集 Vol.8 No.-

This Study is to define, area and figure plan of primitive hut in Korea, what changes as time passes, to report of investigation on Neo Stone, Bronze and Early Iron Age up to the present. I wish results of study that gives a assistance to archetype in Korea traditional Architecture. The results are as follows. 1) The area of hut is tendency to large from Early Neo Stone Age until Primary Three Countries Age. But it is slightly. 2) It should be need reconsideration the opinion that area of residence per one person has take 5㎡. 3) The process of change hut plan is as follows 4) Technique of authoritative Architecture is developed well on Primary Three Countries Age. But shape of common residence is adopted shabby hut. Therefore it is shown that opinion of hut has a tendency to strong. Circle ----------→ Ellipse ---------→ Rectangle ↘ ↘ ↗ Square with round corner -------→ Square

치과용 자성 어태치먼트의 내구성에 관한 연구

이상훈,정재헌,고영무 대한치과기재학회 1997 대한치과재료학회지 Vol.24 No.1

The purpose of this study was to evaluate the compare the endurance of the commonly used dental magnetic attachments using potentiodynamic polarization method. For this study, 2 kinds of Sm-Co based; Magfit 600 and Magfit 400(G.C.) and 4 kinds of Nd-Fe-B based dental magnetic attachments ; Hicolex Super J(Morita Co.), Magfit EX 600(G.C.), Magfit EX 400(G.C.) and Neomagnet(Preat Corp.) were chosen as a specimen and performed electrochemical corrosion test in 4 electrolyte solutions ; 0.9% NaCl, 1% lactic acid, 0.05% HCI, modified Fusayama's artificial saliva solution. In 4 kinds of electrolyte solutions, the potential scanning was performed starting from -1000mV(SCE) to 1300mV and scan rate was 1.25mV/sec. From this study, we calculated the values of corrosion potential(Ecorr), corrosion rate, pitting potential(Epit), and passivation current density resulted from anodic polarization curves and then obtained physical properties such as changing rate of magnetic flux density, amount of metal ion released, mean average surface roughness values, the changing of surface microhardness values, weight loss of dental magnetic attachments and observed surface of dental magnetic attachments using metallurgical microscope after electrochemical corrosion test. The obtained results were as follows : 1. In potentiodynamic polarization curves, SNM showed the lowest values of pitting potential and the most fast corrosion rate. 2. The amount of released metal was reduced in the order of ME6, SNM, MG4, MG6, ME4 and HSJ and was the greatest in applying the 0.9% NaCl solution and was the least in applying the modified Fusayama's artificial saliva. 3. The order of magnetic flux density was HSJ, MG6, ME6, MG4, ME4, and SNM before corrosion. The decreasing rate of magnetic flux density was the least in case of MG4 and was the greatest in case of SNM after first and second corrosion. The decreasing rate of magnetic flux density of 6 kinds of all magnetic attachments was the least in applying the 1% lactic acid solution. 4. The order of average surface roughness values(Ra) was SNM, MG6, MG4, ME4, ME6 and HSJ before corrosion. Average surface roughness values(Ra) was the greatest in case of SNM and was the least in case of HSJ after first corrosion. ME6 and ME4 showed the greatest increasing rate of average surface roughness values(Ra). 5. The order of average surface microhardness values(V.H.N.) was the least in case of HSJ and was the greatest in case of SNM after first and second corrosion. The decreasing rate of average surface microhardness values of 6 kinds of all magnetic attachments was the least in applying the 1% lactic acid solution. 6. The decreasing rate of weight loss was reduced in the order of ME6, SNM and ME4 after first corrosion and was reduced in the order of ME4, SNM, ME6 after second corrosion. The decreasing rate of weight change showed the greatest in applying the 0.9% NaCl solution and the least in applying the 1% lactic acid after second corrosion. In conclusion, all 6 kinds of dental magnetic attachments showed great decreasing of endurance and much more corrosion resulted in increased the amount of metal ion released, decreased the magnetic flux density, increased the surface roughness values, and highly decreased surface microhardness values and increased the weight loss of dental magnetic attachments. it should be considered that the choice of the commercial dental magnetic attachments was needed properly because their endurance showed differences among each king of products.

Gene Amplification System for Biopharmaceutical Production in CHO Cells

Yeong Hoon KO,Yong Jin KIM,Joon Chul LEE,Ju Min LEE,Yuna CHO,Jean Ho PARK,Tae Joon JEON 한국생물공학회 2023 한국생물공학회 학술대회 Vol.2023 No.10

The Demage of Bacterial Diseases of Soybean in Korea

Yeong-Hoon Lee,Nam-Goo Kim,In-Youl Baek,Jong-Min Ko,Chan-Sik Jung,Hyun-Tea Kim,Sang-Ouk Shin,Ha-Sik Shim,Byong-Won Lee,Myeong-Gi Jeon,Ki-Woung Yang,Young-Nam Yoon,Keum-Yong Park 한국작물학회 2010 한국작물학회 학술발표대회 논문집 Vol.2010 No.04

It has been reported that bacterial diseases of domestic soybean are bacterial pustule, wildfire, bacterial blight and bacterial brown spot. Among these bacterial diseases, bacterial blight infected by Gram-negative Xanthomonas campestris pv. glycines had been the most issue in soybean diseases. In recently, issue in soybean disease was shifted to wildfire by Gram-negative Pseudomonas syringae pv. tabaci. When infected in nature, symptom of wildfire generally surrounded infected-area of bacterial blight and formed pustule in infective center. Because optimum growth temperature of Wildfire is lower than these of bacterial pustule, Wildfire caused damage to crop yield in later growth stage. In this study, we checked symptoms of bacterial diseases with growth stages of soybean. Also, we surveyed disease severity of single infection, simultaneous infection and sequential infection of bacterial pustule and wildfire.

Calcium Channel Inhibitor, Verapamil, Inhibits the Voltage-Dependent K⁺ Channels in Rabbit Coronary Smooth Muscle Cells

Ko, Eun A,Park, Won Sun,Son, Youn Kyoung,Ko, Jae-Hong,Choi, Tae-Hoon,Jung, In Duk,Park, Yeong-Min,Hong, Da Hye,Kim, Nari,Han, Jin Pharmaceutical Society of Japan 2010 Biological & pharmaceutical bulletin Vol.33 No.1

<P>We investigated the effect of the phenylalkylamine Ca<SUP>2+</SUP> channel inhibitor verapamil on voltage-dependent K<SUP>+</SUP> (Kv) channels in rabbit coronary arterial smooth muscle cells using a whole-cell patch clamp technique. Verapamil reduced the Kv current amplitude in a concentration-depenent manner. The apparent <I>K</I><SUB>d</SUB> value for Kv channel inhibition was 0.82 μ<SMALL>M</SMALL>. Although verapamil had no effect on the activation kinetics, it accelerated the decay rate of Kv channel inactivation. The rate constants of association and dissociation by verapamil were 2.20±0.02 μ<SMALL>M</SMALL><SUP>−1</SUP> s<SUP>−1</SUP>, and 1.79±0.26 s<SUP>−1</SUP>, respectively. The steady-state activation and inactivation curves were unaffected by verapamil. The application of train pulses increased the verapamil-induced Kv channel inhibition. Furthermore, verapamil increased the recovery time constant, suggesting that the inhibitory effect of this agent was use-dependent. The inhibitory effect of verapamil was not affected by intracellular and extracellular Ca<SUP>2+</SUP>-free conditions. Another Ca<SUP>2+</SUP> channel inhibitor, nifedipine (10 μ<SMALL>M</SMALL>) did not affect the Kv current, and did not alter the inhibitory effect of verapamil. Based on these results, we concluded that verapamil inhibited Kv current in a state-, time-, and use-dependent manner, independent of Ca<SUP>2+</SUP> channel inhibition.</P>

Characteristics of Plasma Treated Electrospun Polycaprolactone (PCL) Nanofiber Scaffold for Bone Tissue Engineering.

Ko, Yeong-Mu,Choi, Do-Young,Jung, Sang-Chul,Kim, Byung-Hoon American Scientific Publishers 2015 Journal of Nanoscience and Nanotechnology Vol.15 No.1

<P>Polycaprolactone (PCL) nanofibers (PCL-NF) with uniform fibrous structure were fabricated by electrospinning. However, PCL-NF has hydrophobic surface, lacks functional groups and hence it is not a good substrate for cell adhesion. To improve the cell adhesion, PCL-NF surfaces were modified by low pressure RF discharge plasma treatment using monomer such as acrylic acid or oxygen gas. The plasma treated PCL-NFs improved the wettability and cell proliferation.</P>