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金煥起,李基完,裸悳寬,丁泰燮 全北大學校 附設 都市및環境硏究所 1988 都市 및 環境硏究 Vol.3 No.-
A site plan for 16,110 persons and area of 308,569㎡ was planned by Chonju City. This paper is to study the effects of the site development on Sam-cheon. Average water quality of Sam-cheon was BOD_5 46.0㎎/ℓ in Jan. and Feb., which exceeded the class levels of legislated water quality obviously. If the site were developed by plan, amounts of estimated overall sewage, BOD and SS loads to Sam-cheon would be about 2,954 ㎥/day, 702 ㎏ BOD/day and 409 ㎏SS/day respectively. Even if the sewage of developed area is treated through the legislated purification system, BOD concentration of the stream would be 2.2 ㎎/ℓ more than the present by effluent of purification facilities. Therefore, to prevent more degradation of water quality at least, the pollutional regulation of total emission for the stream could be applied to Sam-cheon with a time-limit.
金煥起,李基完,朴種煥 全北大學校 附設 都市및環境硏究所 1989 都市 및 環境硏究 Vol.4 No.-
The purpose of this study is to identify and analyse problem of municipal solid waste in Chunju City from various point of view including quantity and character of waste discharged. The findings resulted from this study can be summarized as follows. 1. The amount of solid waste generated from household were 500 tons per day. 2. Value of briquet ash were 44.5% among the generation of household waste. Accordingly, in order to solve the problem of reclamation or raise efficiency in incineration, first of all the wastes collection should be carried out by separation of briquet ash. 3. In order to incinerate the waste it is necessary to be collected waste by separation of waste content waste such as vegetables. 4. The waste of market place generated was suitable for the compostization because of C/N ratio and water content.
金煥起,朴相肅,李壯煥 全北大學校 附設 都市및環境硏究所 1992 都市 및 環境硏究 Vol.7 No.-
Paper and pulp industry are improving by development of paper and publication culture, also treatment and generated sludge in wastewater treatment have operated significant factor of development in paper industry. Therefore, this paper had study on the thickening and dewatering of sludge for the methods of the rational treatment and disposal of sludge in paper mill industry. 1. The primery sludge of wastewater treatment in paper mill are rapid to zone settling velocity, because sludge concentration are concentrated more primery sludge than seconday sludge. 2. The injected polymer to sludge of wastewater treatment in paper mill is 2.6mg. This is very similar to that quantity of injected polymer in treatment plant of paper mill wastewater. 3. Specific resistance to sludge of wastewater treatment in paper mill is 0.33×10 exp (7)sec^2/g, dewatering sludge in paper mill wastewater are good, because specific resistance of sludge in wastewater treatment plant is smaller than other sludge.
정응기,이기환,원용재,박향미,전남수,최준호,구연충,한창덕,은무영,김태산,남민희 Plant molecular biology and biotechnology research 2005 Plant molecular biology and biotechnology research Vol.2005 No.
This study was conducted to investigated the major characteristics of genetically modified rice of "Milyang 204" originated from Dongjinbyeo compared to a non-transgenic rice varieties Dongjinbyeo and Junambyeo. Basta resistant transgenic rice lines carrying bar gene produced by the Yeongnam Agricultural Research Institute were evaluated for their agronomic characters. The transgenic Japonica rice of "Milyang 204" showed inferior phenotypic traits compared to a non-transgenic rice variety Dongjinbyeo and Junambyeo. On the basis of UPOV (Union Internationale Pour la Protaection des Obtentions Vegetables) and NSMO(National Seed Management Office) the transgenic "Milyang 204" showed difference in some traits out of some agronomic traits, such as leaf color, angle of flag leaf, number of spikelets, culm length, white core and white belly compared to the nontransgenic varieties rice.
김환기,송호면,김호열 全北大學校 附設 都市및環境硏究所 1998 都市 및 環境硏究 Vol.13 No.1
Generally, Sulfate reduction is called as decomposition, and many investigations have been performed to prevent from producing H_2S in our nature owing to improper impact to environment. In this study, the basic experiments were performed to prove the influence of nitrate upon sulfate reduction. Tube-type and sealed-type reactor were used to examine the reactions in the microorganism suspended growth and adhesive. The obtained results from this study were as follows; 1. In the sealed-type reactor, the tendency of denitrification was similar to the basic theory But although denitrification was gone on, sulfate reduction did not happened with denitrification simultaneously. 2. In the tube-type reactor BIO-film gradually was formed in the operation process early. The concentration of nitrate and sulfate was shown to decrease both inside the reactor. 3. Therefore, in the tube-type reactor to prevent production of H_2S, the concentration of nitrate has to be maintained constantly.
Fluoxetine이 Schedule-Induced Polydipsia가 유발된 백서 뇌에서 Tyrosine Hydroxylase 발현에 미치는 영향
이기철,이정호,최영민,정주호,정홍경,이용민,김도형,이대환 大韓神經精神醫學會 2001 신경정신의학 Vol.40 No.2
연구목적: Fluoxetine은 serotonin을 매개하여 간접적으로 dopamine 신경전달기능을 억제한다고 추정되고 있다. 또한 운동장애에서 운동기능의 악화를 유발한다고 알려져 있다. 그러나 신경세포체에서 fluoxetine이 dopamine에 어떠한 영향을 주는지는 아직까지 확실치 않다. 저자들은 schedule-induced polydipsia를 유발시킨 백서 뇌의 흑질, 복부피개영역, 미상핵에서 tyrosine hydroxylase(TH) 발현이 저하됨을 발견하였다. 이를 통해서 fluoxetine이 백서 뇌의 dopamine 기능에 긍정적인지 혹은 부정적인지를 규명하고자 하였다. 방법: 4주간의 schedule-induced polydipsia 과정을 거친 백서에서 면역죄치화학적인 방법으로 흑질, 복부피개영역, 미상핵의 tyrosine hydroxylase 발현이 저하됨을 확인한 후, 실험동물들에게 fluoxetine 10mg/kg를 3주간 복강내 주사하였다. 실험백서들을 희생시켜 뇌 조직을 적출하여, TH 면역조직화학 염색법을 이용하여 흑질, 복부피개영역, 그리고 미상핵의 TH 면역반응세포를 관찰하고 이를 정상백서와 비교하였다. 결과: 1) 다갈증이 유발된 백서의 흑질, 복부피개영역, 미상핵에서 tyrosine hydroxylase 발현이 정상백서 보다 저하됨을 관찰하였다. 2) 3주간에 걸친 fluoxetine 투여후 흑질, 복부피개영역, 미상핵의 tyrosin hydroxylase 발현이 다시 증가하는 소견을 보였다. 결론: Fluoxetine 만성투여가 흑질, 복부피개영역 그리고 미상핵의 tyrosin hydroxylase를 증가시키는 소견을 얻었다. 이러한 결과는 임상에서 dopamine 결핍과 연관된 질환들에서 fluoxetine을 만성투여하면 운동기능을 포함한 증상들의 개선을 가져올 수도 있다고 추정된다. Objective: It has been suggested that fluoxetine inhibits the dopaminergic neurotransmission by serotonergic mediation. And also, it has been shown to inhibit synthesis of DOPA in dopamine-rich areas of the rat forebrain. These dopamine-antagonistic capacity of fluoxetine is only supported by anecdotal report that the increased amount of motor disability in patients with idiopathic Parkinson's disease after exposure to fluoxetine. However, there is still no evidence of the direct effect of fluoxetine on dopaminergic neuronal cell body in the substantia nigra, VTA, caudate & putamen. This study was designed to evaluate the effects of fluoxetine in rat brain which showed decreased numbers of dopaminergic neuronal cell body induced by schedule-induced polydipsia(SIP). Method: We incidentally found that 4 weeks of schedule-induced polydipsic rats revealed the suppression of tyrosine hydroxylase expression in the substantia nigra, VTA, caudate & putamen with the immunohistochemistric measures. After 3 weeks of intraperitoneal injection of 10mg/kg of fluoxetine to the schedule induced polydipsic rats, the tyrosine hydroxylase expression was also measured with immunohistochemistry. We compared the tyrosine hydroxylase expression among the normal control, the polydipsic rats, and the rats with fluoxetine treatment. Results: 1) By contrast with the control, the polydipsic rats revealed the evidence of decreased tyrosine hydroxylase expression in the substantia nigra, VTA, caudate & putamen. 2)After daily injection of fluoxetine for 3 weeks, the polydipsic rats showed increment of tyrosine hydroxyase expression in those areas. Conclusions: In previous studies, a great deal of results suggest that fluoxetine negatively influence the dopaminergic systems indirectly via serotonergic activation such as inhibition of dopamine synthesis or transport system. Although our results are obtained from rodents, we suggest that fluoxetine directly and positively enhance the dopamine system in the substantia nigra, VTA, caudate & putamen. The chronic adminstration of fluoxetine may be helpful to dopamine-depleted condition in clinical situations. We anticipate the replication studies of our findings and well-controlled clinical trial.
노기환 광주보건대학 1997 論文集 Vol.22 No.-
The nucleophilicity and basicity of substituted oxetanes can be explained by the negative charge on oxygen atom of oxetanes. The reactivity of propagation in the polymerization of oxetanes can be represented by the positive charge on carbon atom and the LUMO energy of active species of oxetanes. The reaction of the energetic cyclic oxonium ion forms with the open chain carbenium ion forms is expected by computational stability energy of the oxonium and carbenium ion favoring the carbenium ion.
여환호,김수민,이기혁,김수관 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.3
The congenital deformities of cleft lip and cleft palate have been known to afflict man since prehistoric time. Efforts to correct these abnormities have evolved over the centuries as scientific knowledge has advanced. Although there is no agreement as to when the surgery should be performed, most surgeons adhere to "rule of 10" : the infant must be 10 week old weigh 10 Ibs, have a hemoglobin value 10gm/㎗ and have a white blood cell count no greater than 10 thousands/㎣. Consensus favors performing initial palatal surgery in the child when he is between 18 and 24 months old. The timing of cleft alveolus surgery is usually between 10 and 11 years old. In the period from 1992 to 1996, 38 patients with cleft lip and cleft palate treated at the department of oral and maxillofacial surgery, Chosun university, dental hospital were analysed clinically. The obtained results were as follows. 1. The ratio of male to female was 1.92 : 1 (25/23) 2. The ratio of cleft lip, cleft palate and cleft lip & palate was 1.5 : 1 : 2.5 (12/8/18) 3. The ratio of unilateral to bilateral cleft lip was 5 : 1 (25/5) 4. The ratio of left to right side in unilateral cleft lip was 1.5 : 1 (15/10)
金煥起,姜鎭錫,全鍾南 全北大學校 附設 都市및環境硏究所 1992 都市 및 環境硏究 Vol.7 No.-
This paper had study on the water quality characteristics and water quality management of water sources as agricultural water in Gochang. This study included the measurement of stream water quality, water quality of reservoir and water quality of groundwater, this investigation was tried to find out water quality standard of agricultural water into each sources. Results from water quality analysis, the water quality of stream in Gochang was measure that pH was 8.5-7.0, COD was 14.8-1.6㎎/ℓ, SS was 282.8-1.2㎎/ℓ, T-P was 2.64-0.17㎎/ℓ, T-P was 0.22-0.01㎎/ℓ, electric conductivity was 220-50㎲/㎝ and Cd, Pb, Cu was below 0.01㎎/ℓ. The water quality of reservoir in Gochang was measure that pH was 7.0-8.0, COD was 8.0-2.6㎎/ℓ, SS was 126.1-3.4㎎/ℓ, T-P was 1.13-0.456㎎/ℓ, T-P was 0.16-0.05㎎/ℓ, electric conductivity was 200-130㎲/㎝. The water quality of ground water in Gochang was measure that pH was 6.0-8.4, TS was 51.8-419.8㎎/ℓ, COD was 2.4-1.0㎎/ℓ, CO_3^- was 125.8-14.5㎎/ℓ, SO_4 was 0.46-48.3㎎/ℓ, Cl^- was 134.1-3.6㎎/ℓ, T-N was high 15㎎/ℓ Therefore, stream water and reservoir water in Gochang had adequate to agricultural water quality standard. The ground water had adequate to agricultural water quality standard in deep well and low well.