암모니움, 아초산염과 칼슘 화합물이 고추 역병균(Phytophthora capsici)의 발아와 균사생장에 미치는 효과

장태현, 정봉구 忠北大學校 遺傳工學硏究所 1988 遺傳工學硏究 Vol.2 No.1

본문참고

흰쥐 편도체에서 칼슘결합단백인 calbindin-D28K함유 신경세포의 생후 발달에 관한 면역조직학적 연구

정윤영,김종중,문정석,박영란,정상봉,김현곤,박상수 조선대학교 2001 The Medical Journal of Chosun University Vol.26 No.1

Background and Objectives : The calcium-binding protein, calbindin-D28K(CB) is widely distribution of CB in rat amygdala during postnatal maturation, in order to provide an insight into the developmental role it may play in the amygdaloid neurons. Materials and Methods : The present study is based on 28 postnatal cases ranging from the day of birth, postnatal day 0 (P0) to 30 days (P5, P10, P15, P20, P30), and these cases were compared with adult rat amygdala. Cryostat sections processed free-floating with monoclonal antibody by immunohistochemistry. Results : CB-immunoreactive neurons were already found at birth in all amygdaloid nuclei except the intercalated nucleus. The intensity and number of immunoreactivity of CB-containing neurons increased during the first 10 days of postnatal life but dramatically decreased at P15. Mature patterns of CB-immunoreactive neurons were achieved at P20. In the adult amygdala, CB-immunoreactive neurons were distributed in almost all amygdaloid nuclei except the intercalated nucleus. Conclusion : The present results show early appearance of CB immunoreactivity in the amygdala. It may be related to the early appearance of CB immunoreactivity in many other brain regions, and suggests that CB may play a functional role during the development of the nervous system including amygdala.

지리산 면양목장 조성에 관한 연구 : Ⅰ보. 면양목장 조성 및 면양사육 단지화 조성을 위한 기초조사 Ⅰ. Fundamental Survey of Resources for the Development of Sheep Range and Sheep Farm Grouping

정현승,강봉태 진주산업대학교 1970 論文集 Vol.4 No.-

This survey reports the availability of the various resources such as geography, meteology, traffic condition, soil property, labor resource, pasture distribution and water resource, for the development of sheep range and sheep-farm group, on the first step to the three-year plan in an area around the Forestry Experiment Station of Chinju Agricultural and Forestry Junior Teachnical College in Mt. Chiri. 1. The geographical conditions of the region found to be fit for the establishment of sheep range were as follows; longitude:127˚44'east,latitude:35˚22'north,elevation:600-900m above marine surface level, slope:5-25˚, total area: 280 ha, and administrative district: from high level flats to Yeo-gok and Dusuk village, Yupyung-ri, Samjang-myun, Sanchungkun, Kyung Sang Nam Do, Korea. Especially, eighty seven farm households and Karangip primary school distriduted around this region were found to be the reasonable resources for the development of sheep farm group in this region. 2. The soil of the area was composed of most of sand-loam with PH 5.3∼5.8, 2-5% of grit and 13.3% of humus (4.6-19.3%) among 30∼50㎝ depth of surface soil. These fertile soil properties were found to be fit for the development of pasture. 3. The meteological records of this region were found as follows: frosty period: from October 16 to April 22, yearly mean air temperature: 9.2℃ , ranging from 26.6℃ in August to (-)12 in January, annual rainfall: 2,346mm, yearly mean wind velocity: 6.2m/sec, direction of the wind: north-west in winter and south-east in summer. According to the above results from only one-year observation, the meteological conditions of this region were similar to those of Dae-Kwan Ryung area and were estimated to be favorable for sheep raising. 4. In this region 35 species of wild grasses were prosperous. The green yield of the grasses averaged 1,584㎏ per 10a and 0.87a was required for grazing a sheep. Therefore, it was estimated that about 3,000 heads of sheep would be well raised in this region. The fact that about 30 percent of Mt. Chiri area is available for sheep pasture suggested that 400,000㎏ of wool, or 250,000,000 won in price(equivalent to 1/10 of the total wool imported in 1967)could be gained from grazing about 100,000 heads of sheep in the whole area of Mt. Chiri, 54,000 ha. 5. Sufficient water resources, conclusive of mooring by the farmers around this region, irrigation water, underground water and especially the pond situated in high level flats were found to be available and the quality of water was satisfactory for watering sheep. 6. Concerning the traffic situation of this region, the construction of 1.5㎞ of road to Dusuk village (with 200m of bridge) and three 2㎞ range path from Dusuk village were required. However, such traffic problems are not serious because the sheep farming requires the road only for disposal of wool produced once a year. 7. From the managment survey for 87 farms around this area, it was found that each farm had 1,019.6 hours of unemployed labour per year, which was sufficient for raising 60 heads of sheep. So it could be estimated. that potential labour enough for raising 5,200 heads of sheep was reserved in this area. Moreover, the Karangip primary school boys are available as a good resource of labour for sheep grazing. The great deal of by-products of sericulture and potato-farming, which were the major industries in this region, was available for sheep raising.

智異山 면양목장 조성에 관한 연구 : Ⅷ報. 智異山 山野草가 緬羊의 繁殖率에 미치는 영향과 羊毛의 加工利用方法, 販路方案, 貯藏法 및 緬羊團地造成時의 經濟性 分析 Ⅷ. Effect of the native herbages in Mt. Chiri on the breeding percentage of sheep and the processing method, way of marketing and storage of wool and economical analysis in the collective feeding of sheep

鄭鉉丞,姜奉泰,李炳五 진주산업대학교 1972 論文集 Vol.9 No.-

This is the report for 1971 of the third year project among the three years plan on the development of sheep range in Mt. Chiri. To investigate the effect of native grasses in Mt. Chiri on the breeding percentage of sheep this experiment was carried out from March 22, 1971 to March 21, 1972. Numbers of experimental animal used in this experiment were 12. Furthermore, the processing method of wool, marketing, economical analysis in the collective feeding and storage were investigated in cooperation with this experiment. The results obtained here were as follows; 1. For the processing method of wool, there are two ways; one of the processing method of wool is the self-processing method which follows the easy method of wool processing and another of the processing method of wool exchange with the good of wool texture company which follows the charge processing method of wool. 2. For the marketing route of wool, because the wool texture company can buy limitlessly wool, there are two ways to sell wool. The one of the way is the direct sell method of wool to the wool texture company and the other of the way is the sell method of wool via the route of circulation mechanism. 3. In the case of economical analysis for the collective feeding of sheep, if farms could raise 3,000 of sheep in the method of collective feeding it could get net income of 150,000 to 300,000 won for 52 days per farm per year. 4. For the storage of wool, to attach of wool fat must be needed and in the case of short period storage, wool must be placed in the arid place and in the case of long period storage, wool should be prevented from the attack of insect and rat, attachment of spurious article such as dust, decrease of weight and denaturation of wool fat. 5. The breeding percentage of sheep fed only native herbages plant was 60%.

實科 敎育 課程 詳細化 硏究

鄭聖鳳,宋賢順 韓國實科敎育硏究學會 1996 實科敎育硏究 Vol.2 No.1

교육과정 상세화는 교수의 질을 향상 시키고 교수 내용을 다양화 시키며, 교수 목표 실현을 위해 필요하다. 이 연구의 목적은 초등학교에서 실과 교육과정을 효과적으로 활용하는데 있다. 이 연구는 크게 세부분으로 이루어져 있다. 실과 교육 목적의 상세화, 실과 교육과정의 단원설정, 실과 교육고정 상세화의 실제가 그것이며, 또한 5, 6학년 실과 교육과정 상세화를 부록에 제시하였다. The curriculum specification be needed to promote the instructional quality, to diversify the teaching contents and to be realized the instruction objectives on practical art education. The purpose of this study was to specified the practical art curriculum for the practical use in elementary school. This study was contained three parts: the specification of practical art curriculum, the contents and units establishment of practical art curriculum, practical specification of practical art curriculum. Also, the specifications of practical art curriculum on 5th and 6th grades were presented in appenices.

PSC 교량의 보강공법에 대한 실험적 연구

김현호,김기봉,정인근,송재필 中央大學校 建設環境硏究所 2002 環境科學硏究 Vol.13 No.2

많은 수의 국도상의 교량이 교통량 증가 및 차량의 대형화에 따라 내하력 증가의 필요성이 시급히 제기되고 있다. 본 연구에서는 국도상 교량 중 대다수를 차지하고 있는 프리스트레스트 콘크리트(Prestressed Concrete, PSC) 교량에 대해 유리섬유 부착 공법과 외부 후긴장 보강 공법을 적용하여 내구성 및 내하력의 증가방안을 확인하고자 한다. 실험체는 표준도면의 1/5 축소모델로서 지간길이 6m이며 총 15개의 실험체를 제작하여 정적 및 피로실험을 수행하였다. 실험 결과, 유리섬유 및 외부 후긴장 보강 방법을 적용하였을 때 균열하중 및 파괴하중의 크기가 증가되었고, 처짐의 감소효과와 균열에 대한 억제 능력이 증가하였다. 그리고 보강 실험체가 피로파괴 반복회수도 증가하며 유리섬유 보강 실험체의 경우 외부 후긴장 실험체보다 피로성능이 더 우수한 것으로 나타났다. 본 연구 결과를 통해 적용된 보강 기법이 노후된 PCS 교량의 성능증가와 수명 연장의 효과가 큰 것을 확인하였다. Most of the bridges on national road are needed capacity-enhancement, because of the increase of heavy traffic loads and aging of bridges. Among those bridges, prestressed concrete(PSC) bridges take a large portion. But there are not many related researches about strengthening PSC bridges. In this study, the practicability of strengthening methods for PSC beam were studied by the static and fatigue experimental method. For the experiment, 1/5 scale and six meters long PSC beams were made with concrete slabs. Glass fiber sheeting and external post-tensioning methods were used for strengthening PSC beams. Total 15 beams were made for static test and fatigue test. As a result, the strengthening methods, which used in this study, are efficient at increasing cracking load and failure load, to decrease deflection and prevent cracks. The experimental results show that the failure cycle of strengthened members are increased compare to non-strengthened members. The members strengthened with glass fiber show better enhancement in fatigue problem than the members strengthened with external post-tensioning method. With these experimental results, it can be said that the strengthening methods used in this study are efficient at extending the life time of aged PSC bridges.

사료용 교잡종 옥수수 연구 : Ⅲ. CNU와 SK계통을 이용한 교잡종 옥수수의 건물중 및 종실 수량

이희봉,김동욱,김준표,김용일,정재영,최현구,문현귀,이충열 충남대학교 농업과학연구소 2003 농업과학연구 Vol.30 No.2

공시 교잡종에 대한 각 지역에서 선발된 우수 교잡종의 간장 및 착수고는 대조구와 비슷한 경향이었으며, 생체 및 건물수량은 분얼수 및 간장과 관련이 큰 것으로 나타났으나 재식 밀도와 기상상태와도 밀접한 관계로 나타났다. 따라서 생체중은 대전지역에서 재배된 교잡종 H67이 대조구인 광안옥에 비해 53.2%로 높았고, 수원에서 역시 41.8%으로 높았으며, 종실수량은 H15과 H67에서 대조구보다 11.7%와 9.7%로 각각 높게 나타났다. 대전에서 분얼성인 H42와 무얼성인 H65에서 대조구보다 9.1%, 5.2%증가하였고, 수원에서는 분얼성이 H42와 무얼성인 H65에서 대조구보다 9.1%, 8.5% 증가하여 교잡종간, 지역간에 큰 차이를 보였다. 한편 후기 녹체성은 무얼형보다 분얼형에서 낮은 경향을 보였는데 SK계통과 교배된 조합에서 우수한 편으로 나타나 우수 교잡종 육성시 중요 고려사항으로 지적되었다. In order to develop the crude forage maize hybrids with high dry matter and grain yield, several hybrids evaluated as superior hybrids at three regions in 2001. They were planted and surveyed again for the second selection in 2002. The selected hybrids showed large difference in some major characteristics according to planting areas and dates(Suwon : April 25. Daejeon : May 15 and Milyang : May 25), but insect and disease injury were similar to check. Fresh and dry weight of the H67 hybrid at Suwon and Daejeon was the highest among hybrids including check, but low in Milyang due to raining after flowering. Grain yield was higher than check in H15 at Suwon H45 and H37 at Daejeon and H67 at Milyang.

유리섬유로 전단보강된 철근콘크리트 보의 거동에 관한 실험적 연구

김기봉,정영수,김현호 中央大學校 建設環境硏究所 1999 環境科學硏究 Vol.9 No.2

Recently, glassfibers have been used for strengthening in RC structures because of low material cost and easy repairing work. The purpose of this study is to experimentally and analytically investigate the effect of glassfibers for enhancing the shear capacity of RC beams. The experimental result shows that ultimate strength of RC beams with glassfibers are increased up to 34% comparing with those for RC beams without glassfibers. Also, ductility of RC beams strengthened with glassfibers have been significantly increased. It had been observed from the test that fatigue behaviours of RC beams with glassfibers have been significantly improved by comparing with those for RC beams without glassfibers.

흰쥐에서 에스트로젠 결핍이 하악골 골밀도에 미치는 영향

김기현,신상훈,김욱규,박봉수,정인교 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.2

The relationship between systemic bone loss(osteopenia) and loss of oral bone has been of considerable recent interest. In dentistry, some investigators have studied using human subjects, but no firm conclusion due to many obstacles have yet been obtained. From these obstacles in the assessment of human subjects, the significance of investigations with overiectomized rats has been proposed recently. Also, in ovariectomized rats, quantitative data on changes in the alveolar bone of mandible and basal bone of mandible using dual-energy x-ray absorptiometry(DEXA) were far fewer. The purposes of this study were to certify systemic estrogen deficiency-induced osteopenia by biochemical markers(serum osteocalcin(OC) & urinary deoxypyridinoline(DPD)) and bone mimeral density(BMD) of femur by DEXA and examine changes in BMD of the rat mandible by DEXA with 24-week-old female Sprague-Dawley rats. Forty eight rats were used in this study and twenty four rats were ovariectomized bilaterally(OVX) to induce systemic osteopenia and remainders were subjected to sham surgery(Sham). The experimental rats were killed at different time interval(1st, 2nd, 3rd, 4th, 6th, 8th, 12th and 16th week) for histologic examination, biochemistry analysis and BMD measurement. The results obtained from this study were as follows: On histological examination, in mandible, early degeneration of periodontal ligament, early bone resorption in alveolar bone and late bone resorption in basal bone were observed. On biochemical analysis, OC and DPD were observed statistically no significancy to predict systemic osteopenia. On DEXA measurement, in OVX group, we observed statistically significant decrease from 3rd week in distal metaphysis, statistically non-significant decrease from 2nd week in alveolar bone of mandible, and statistically significant decrease at 16th week in total mandible. From these results, it could be stated that systemic osteopenia by ovariectomy was early affected in the trabecular bone of femur and alveolar bone of the mandible whereas the total mandible was affected later.

혈액투석중인 말기신부전 환자에서 Fludrocortisone acetate (FCA) 투여 후 혈청 칼륨 저하 효과

류봉관,강대웅,정지용,윤나라,신병철,박경희,정종훈,김현리 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.1

Background: Hyperkalemia is a commonly encountered problem in dialysis patients with end-stage renal disease. In this study we evaluated the effect of mineralocorticoid therapy (fludrocortisono acetate) on serum potassium level in the serum of hyperkalemic end-stage renal disease patients. Methods: Fourteen patients on hemodialysis receiving fludrocortisone acetate (FCA) 0.1 mg/day were observed for 2 months periods. Consecutive monthly biochemical profiles were compared for the druration of the pre-and post-treatment of FCA. Result: Fourteen patients with mean age (±SE) of 51.5 years (4 males and 10 females) and mean hemodialysis period of 51.9 months were studied. Mean serum potassium levels significantly fell (p<0.05) during the post-FCA period (5.2±0.66 mEq/L) compared with potassium levels during the pre-FCA (5.8±0.43 mEq/L) period. Pre-and post-FCA values were not different for sodium, chloride, protein, albumin, AST/ALT, glucose, blood nitrogen, creatinine, phosphate and calcium. Conclusions: FCA appears to decrease serum potassium value in patients with end-stage renal disease. These results suggested that FCA could be effective to treat hyperkalemia without any adverse effect in patients undergoing hemodialysis.