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난소적출 및 수종 Hormone투여가 치아및 치은의 Collagen 생합성에 미치는 영향에 관한 실험적 연구
박우찬,정동균 대한구강생물학회 1980 International Journal of Oral Biology Vol.4 No.1
The effects of ovariectomy, several hormones and fluoride on the collagen turnover in teeth, pulp and gingiva were studied employing the Sprague-Dawley female rats. The rats were divided into non-treated and treated group, and treated group on which had been performed ovariectomy operation, was further subdivided into 5 groups, i.e., control, estrogen, testosterone, prednisolone and fluoride administered group. Then, each group was treated with ^3H-proline and sacrificed according to a predetermined schedule. Pulp, teeth and gingiva were removed immediately and decalcified for 3 days. After digestion of samples, separation and quantitative analysis of proline and hydroxyproline were performed employing thin layer chromatography and radioactivity of seperated amino acid was assayed by liquid scintillation counter. The results were as follows ; 1. In non-treated group, the incorporation rate of ^3H-proline into hydroxy-proline was greater in pulp of teeth than in hard tissue of teeth and gingiva. Collagen turnover of lower root, lower pulp and gingiva was more rapid than any other tissues tested. 2. In all the tissues from ovariectomized rats, the incorporation of ^3H-proline into collagen was markedly decreased. 3. The decreased effect of ^3H-proline incorporation into collagen by ovariectomy was markedly antagonized with estrogen, moderately or slightly with testosterone in all the tissues tested, whereas fluoride had a slightly antagonizing effect only in th lower incisor roots. The effect of ovariectomy on collagen turnover was augmented or not influenced by prednisolone.
無給水日數에 따른 造景植物의 生長 狀態와 生存率에 관한 硏究(Ⅲ)
申宇均 公州大學校 資源科學硏究所 1994 資源科學硏究論文集 Vol.2 No.-
There are various planting spaces for landscaping. That is in arid area, in no precipitation space and on the concrete slab cut off natural soil profile. The purpose of this study is to choose the landscaping shrubns and find the control of water supply in cut off natural soil profile and arid area planted landscaping trees. The selection of experimental plants were Pyracanta angustifolia and Ilex crenatea var. microphylla. The experimental plants were planted in plastic pot( 30㎝) with 9.0㎏ lomy sand, the plants of experiment used one year old cutting plants. For the development of lateral branches, we cut off the terminal bud of lead branch. The experimental plots design to 17 treat (control, no water supply days, 15, 17, 19, .....45) by 3 level. The main research of the experiment is the forecast of the soil water content and growth condition, wilting point, revived condition and survival rate of experimental plants. The result obtained were as follows. 1. The linear regression of no water supply days and soil water content are formularized as follows; For Pyracantha angustifloia Yp=11.87 - 0.244x Yp: soil water content, X : no water supply days For Ilex crenata Var. Microphylla YI=11.50 - 0.22px YI : soil water content, X : no water supply days 2. The longer no water supply days were, the shorter were mean length of lateral branches, nodes, and the smaller were number of new leaves. 3. The lateral branches of Pyracantha angustifolia developed until have no water supply for 19days and growed no watering 21days. 4. No. of new leaves of Pyracantha angustifolia increased no watering 23days. 5. The lateral branches of Ilex crenta var. microphylla developed until have no water wupply for 27days and growde up no watering 29days. 6. No. of new leaves of Ilex crenata var. microphylla increased no watering 27days. 7. Pyracantha angustifolia appeared the temporary wilting point on no watering 19days(soil water content 7.68%), and Ilex crenata var. microphylla showed te temporary wilting point on no watering 21days(soil water conternt 6.83%). 8. Occurrence of dride of pyracantha augusstifolia showed no watering 29days(soil water content 4.14%), and Ilex crenata var. microphylla showed no watering 27 days(soil water content 5.14%). 9. Pyracantha angustifolia and Ilex crenata var. microphylla was possible to revive if it was watered again before no water supply 23days. 10. The survival rate of pyracantha angustifolia decreased on no watering 35days and on no watering 37th days the plants completely dried. 11. The survival rate of Ilex crenata var. microphylla decreased on no watering 31days and completely dried no watering 33th days. 12. According to this study, drought tolerance of pyracantha angustifolia and Ilex crenata var. micropylla was not great differences.
李愚鵬,吳東元,朴美淑,黃悳海,司空恩,朴在均 慶北大學校 科學敎育硏究所 2004 科學敎育硏究誌 Vol.28 No.-
Poly (9,9-dialkylfluorene-2,7-diyl) derivatives end capped with 2,7-dibromo-9,9-dihexylfluorene and conductive fluorene substituents have been synthesized through Ni(0), the nickel-catalysed reduction with metallic zinc-mediated polymerization. When electron and hole recombined and formed a exciton in emitting layer. Singlet exciton and triplet exciton is the ratio of one to three. One is fluorescence and three is phosphorescence, but phosphorescence is almost sustained a loss. Not only to shift blue region but to increase phosphorescence efficiency, it is substituted Eu for the terminal H in this polymer chain. P1-Eu showed green emission at 533nm while P1 had at 548nm. The main emission peaks of the P1-Eu shift shorter wavelength, besides we observed another emission peaks of the P1Eu at 418nm.
盧澈均,金佑鉉,李武永 慶一大學校 1997 論文集 Vol.14 No.2
The dynamic characteristics of nine-switch matrix converter(NSMC), under the control strategy proposed by Venturini, is evaluated by simulations and experiments. Experiment sets are composed of the CPU part including TMS320C30, gate driver part, power supply part, A/D converter part and switch part. In this experiments, switching signal is generated in the real time by using TMS320C30. Switching frequency is increased by using 8253 counters which handle the some part of TMS320C30's calculation. In the experiment results, we can verify that the amplitude, frequency and power factor are controlled, AC-AC converter can be made up single module, and the volume of motor driving part can be reduced by excluding DC link. This experiment sets have error, which is calculation error of TMS320C30, and delay error of the counter. Furthermore researches should be focused on the minimization of these error.
유럽法과 日本法 및 韓國法의 近代公法文化의 硏究方法序說과 韓國의 近代公法文化의 接觸
韓堅愚 연세대학교 대학원 1994 延世論叢 Vol.30 No.1
Abstract 1. Le discours de la culture moderne en droit public Nous nous concentrons sur le me´canisme des pouvoirs pour l'e´tude comparative de la culture europe´ano-asiatique, notamment y compris la cuture japonaise et la culture core´enne, dans le domaine du droit public. Mais on risque de perdre ce que l'on gagne en dimension du champ de l'e´tude largeur du co^te´ de la profondeur de l'analyse. L'ampleur et le de´veloppement de la culture le´gale devraient nous permettre d' e´largir l'horizon et de montrer la direction du progre`s dans l'avenir pour la cuture le´gale core´enne en ce qui concerne le droit public 2. Le contact avec la culture moderne on Core´e Apre`s des sie`cles d'une farouche fermeture et d'un volotaire repli sur soi, la Core´e s'est ouverte a`l'Occident la fin du XIXe sie`cle. Lorsqu'elle conclut des trait s de commerce avec les pays occidentaux, la Core´e accepta des conditions de´favorables et inte´galitiaires dans son ignorance du droit international. Dans de pareilles circonstances, la modernisation du syste`me juridique de la Core´e e´tait absolument n e´cessaire. Un petit nombre d'hommes clairvoyants avaient de bonne heure pris conscience de la ne´cessite´ de la re´ception du droit occidental. Le premier contact de la Core´e avec le droit occidental eut lieu a´ la fin du XIXe si e`cle. En 1895, les Core´ens ont accuilli dans un livre, So' you-Gyun' moun, les conceptions de l' "Etat", du "Droit", de la "Justice" telles qu'on les connai^t en Occident. Par ailleurs, un Core´en, HONG Jong-Woo, qui e´tait venu en France pour la premie´re fois afin d'e´tudier le droit franc¸ais en 1890. En 1895, le gouvernement cor e´en avait cre´e´ un Institut ayant pour mission d'enseigner les droits modernes trangers, en vue de former ses magistrats. Un juriste franc¸ais, L. CREMAZY, enseignait le droit dans cet Institut. Ainsi, au de´but de sa modernisation, le syste`me juridique de la Core´e a subi tre`s fort l'influence du droit franc¸ais. De`s 1905, les Core´ ens manifeste`rent un vif inte´re^t pour la traduction des ouvrages juridiques occidentaux. Mals l'invasion japonaise on Core´e arre^tait le courant de la modernisation autonome sur le plan du syste`me juridique, et ralentit la re´ception progressive du droit occidental. On souligne que la ta^che la plus urgente des auteurs core´ens serait d'harmoniser la modernisation souhaitable du droit avec la socie´te´ traditionnelle. C'est ainsi seulement que du point de vue le´gal on pourra de´velopper une nouvelle conscience juridique a`tracers la reconstruction du droit, sans se consenter de la simple traduction d'un droit tranger mais en recherchant a`travers cette action cre´atrice la stabilite´et le de´ veloppement de la communaute´ sociale on Core´e.
신우균 公州大學校 産業開發硏究所 1999 産業開發硏究 Vol.7 No.-
This study aims to survey and analyze the sight-seeing resources in Ahnmyon Island. In addition to the consciousness of resident and people investigated on development in Ahnmyon Island. The major finding of this study could be follow; 1. Sight-seeing resources 1). Sea-shore of Ahnmyon Island is ria coast. There for progressed long beaches, coastal dunes, broad tidal flats and beautiful sea cliffs, wave-cut terraces distribute in the seashore. 2) We could be observation various the migratory(passage)birds, sea fishes, sea shellfishs and sea weeds. 3) Various plants for example; the frigid zone, the temperate zone, the sub tropical zone and salt plants grows in this Island. 4) There are precious the Koelreuteria paniculata Laxmann(golden rain tree)community has designated natural monument by the government. 5) There are Boongi poong-ea je of the representative folk festival and some site of historical tradition. 6) There are many long beaches and the dense Ahnmyon pine forest and famous trees and shrubs garden. 7) we could seeing various landscape factors for exmaple' panoramic landscape, natural landscape, enclosed landscape, focal landscape, canopied landscape, detail landscape, ephemeral landscape. 2. Consciousness of resident and people ■Consciousness of resident 1). Most of resident desired to the sightseeing development region and wish a reflex of the will of the resident in progress of development. 2). First consideration is natural conservation than economic development and large scale development than small scale development. 3). Most of resident wish tourist goods of local color and easily approached traveling. ■Consciousness of people 1). The most of development is sightseeing development than other development plan in Ahnmyon Island. Because there are various sightseeing resources and underdeveloped region. 2). Characteristic sightseeing resources are Ahnmyon pine forest and various plants, long beach and local color landscape. 3). Sightseeing development should be familiar with environment and need the restriction in other to preservation of natural environment and social morals and customs.
박재균,오동원,이우붕 慶北大學校 師範大學 科學敎育硏究所 2007 科學敎育硏究誌 Vol.31 No.-
Two polyfluorenes, poly[9,9-dioctylfluorenyl-2,7-diyl](P1) and Poly[9,9'-dioctyl fluorene-CO-9,9-bis(4-diphenylaminophenyl) fluoren](P2), were synthesised using the Suzuki coupling reaction. The use of bulky substituents(triphenylamine) in the main chin of P2 improves solubility but exacerbates the twisting in the main chain, further limiting the conjugation lengths and extending π-π* energy gap. The polymers possessed good solubility in common organic solvent such as Toluene, THF, chloroform and so on. The polymers characterized by ¹H-NMR, ¹³C-NMR, GC-MASS, GPC, DSC, TGA, UV -vis., PL. The initial degradation temperatures(T_(id)) of P1, P2 and ADS431BE showed respectively 416 °C, 425 °C and 407 °C, which means all of them have high degradation temperature. Glass Transition temperature(Tg) of P2 showed more high temperature than other polymers(P1, ADS431BE) because of decrease of flexibility by twisting in the main chain. The maximum absorption peak in the UV-vis spectrum of P1, P2 is located all at 390 nm. The maximum emission peaks of P1 and P2 showed all at 438 nm blue region. All of P1 and ADS431BE showed broad wavelength region and had excimer. The P2 showed sharp wavelength region and hardly had excimer. Therefore color purity of the P2 is better than P1, ADS432BE. 연구에서는 유기EL분야에 응용 가능한 새로운 Fluorene계 청색발광 고분자를 합성하기 위해서 Fluorene을 이용해서 단량체인2,7-dibromofluorene, 2,7-dibromo-9,9-dioctylfluorene(M2), 2,7-dibromo-9- fluorenone,9,9-bis(4-diphenylaminophenyl) -2,7-dibromolfluorene(M3)을 합성하였다. Fluorene의 C-9번 위치에 octyl 그룹이나 thphenylamine을 치환하여 유기용매에 잘 용해되도록하였다. P1고분자는 단량체 2,7-dibromo-9,9-dioctylfluorene(M2)을 그리고 P2고분자는 단량체 2,7-dibromo-9,9-dioctylfluorene(M2)와9,9-bis(4-diphenylaminophenyl)-2,7-dibromolfluorene(M3)을 그리고 고분자의 end-capping과 전자 수송능력을 향상시키기 위해 2-(4-bromophenyl)-5-phenyl -1,3,4-oxadiazole을 Pd(0) 촉매로 사용하는 Suzuki coupling 중합법으로 합성하였다. P2고분자에 치환된 triphenylamine은 고분자의 정공 수송능력을 향상시키는 작용을 한다. 각각의 단량체와 고분자의 구조분석은 1H-NMR, 13C-NMR, GC-MASS를 이용하여 분석하였고, 고분자의 열적분석은 DSC, TGA를 통해 측정하였고, 광학적 특성은 PL, UV-vis를 통하여 분석하였다.
펄스코로나 방전에서의 NOⅹ 저감 에너지 효율에 관한 실험적 연구
姜宇政,申昌均 충주대학교 산업과학기술연구소 2002 産業科學論文集 Vol.10 No.-
Rapid recent development in industry generated environmental issues. The NOx, the main cause for the air pollution, increases the Ozone-concentration and becomes a factor for the photochemical smog and acid-rain. Thus, the preventive method as well as the inhibitive technique for NOx have been demanded. The purpose of present study is to change the harmful gas using high voltage pulse system. In order to reduce the harmful NOx, experiments were done with changes in gas temperature, NOx initial concentration, C_2H_4 concentration, and the amount of pulse voltage.