??C追跡子法에 依한 柑橘의 糖과 有機酸에 關한 硏究 : Effects of Foliar Application of ?? ??의 葉面處理效果

金瀅玉,康順善,柳基中,柳長杰 제주대학교 방사능이용연구소 1985 연구보고 Vol.1 No.-

柑橘(Citrus unshiu Marc.)의 糖, 有機酸 및 아미노酸에 대한 ??의 영향을 보기 위하여 KCI과 K₂SO₄溶液을 葉面處理하고 ?? 를 同化시킨 뒤 ??C로 標識된 同化産物의 徑時的 變化를 3週間 調査하였다. ?? 處理後 1週日間 果實에 轉流된 ??C 同化産物의 比放射能(cpm/㎖)은 ?? 處理區에서 더컸다. 果汁의 糖分劃 放射能은 그 水準과 變化樣相이 ?? 處理間에 差異가 없었지만, 有機酸分劃에 있어서는 ?? 處理後 2週日 以後에 有機酸分劃의 比放射能 減少量이 ?? 處理區에서 더 많았다. 有機酸分劃의 比放射能에 對한 糖分劃比放射能의 比率이 SO?? 處理區에서는 時間이 경과함에 따라 增加하는 경향이었으나 ?? 處理區는 급격히 減少했다. 따라서 ??가 ??보다 果汁의 甘味比를 증가시키는 것으로 생각되었다. 아미노산分劃의 比放射能은 ?? 處理區보다 ?? 處理區에서 더 많이 增加했다. The effects of spraying ?? solutions on sugar, organic acid and amino acid levels in citrus(C. unshiu Marc.) fruit juice were examined using the ?? method. Each ?? compound under investigation was measured during the three weeks after ??assimilation. The total carbon compound, which was measured as the specific activity (cpm/㎖) of ??, was transported more into the fruit juice within one week after ??assimilation with the SO treatment than with the ?? treatment. The ?? activity changes of the sugar fraction were very similar in both ?? and ?? treatments although the organic acid fraction was reduced more by ??. The specific activity ratio of the sugar fraction to organic acid was increased rapidly when treated with ??. This indicates that ?? plays a role in raising the ratio of sugar to organic acid. It was found that the ?? activity in the amino acid fraction was higher when ?? was applied.

초고속 국가망의 가입자망 유형별 정보보호 대응방안

이형옥,조정호,한치문 한국정보사회진흥원 2003 정보화정책 Vol.10 No.1

본 논문에서는 초고속국가망의 가입자별 망구조와 초고속 국가망을 이용하는 기능에 따른 가입자망의 유형을 분석하고, 이를 토대로 초고속국가망에서 가입자망의 정보보호를 위한 보안모델을 제시한다. 이를 위해 가입자망 구조를 FR망 가입자, ATM망 가입자 및 라우터망 가입자로 구분하고, 가입자망의 기능을 인터넷 백본 모델, ATM종단간 전용선 기능인 가상 터널링 모델, VPN모델로 분류한 다음, 각 모델별 가입자 정보보안을 위한 대응 방안을 분석한다. In this paper, subscriber network types in KII(Korea Infornation Infrastructure) accofding to subscriber network structures and the application types of subscriber are analyzed, and the protction models for the user data of subscriber networks on KII are proposed. The subscriber network structures such as FR(Frame Relay) network, ATM network and router network are defined, and the service application model in KII are classified. As a results, user data protection methods suitable for each model are analyzed.

고등학교 운동선수에서 최대하 Treadmill 운동시 심폐기능의 변화와 산소섭취량의 추산법

배옥석,김형진,박재식,주영은 慶北大學校 醫科大學 1990 慶北醫大誌 Vol.31 No.3

고등학교 운동선수에서 최대하 treadmill 운동시험시 심폐기능의 변화를 구명하고 운동부하, 운동시간 및 심박수로부터 산소섭취량을 추산할 수 있는 회귀방정식을 유도하고자 15∼18세의 남자 고등학생 운동선수 14명과 비운동선수 16명을 대상으로 하여 Bruce법에 따라 treadmill 상에서 최대 운동능력의 80%에 해당하는 최대하운동을 실시하고 운동전, 운동중 및 운동후에 심박수, 혈압, 분시환기량, 탄산가스생산량 및 산소섭취량을 측정하였으며 운동 전후에 폐환기역학 검사를 시행하였다. 심박수는 선수군에서 안정시의 71.9±1.3회로부터 운동중 178.0±2.0회까지 증가하여 최대심박수의 81.2±2.3%에 달하였고 비선수군에서는 안정시의 81.8±2.4회로부터 182.6±1.1회까지 증가하여 최대심박수의 79.6±2.0%에 달하였다. 선수군의 심박수는 비선수군에 비해 전 실험기간에 걸쳐 유의(P<0.01)하게 낮은 값을 유지하였다. 분시환기량은 선수군에서 안정시의 5.1±0.6 L/min로부터 운동중 63.0 L/min까지 증가하였고 비선수군에서는 안정시의 5.2±0.5 L/min로부터 51.2 L/min 까지 증가하였으며 양군 사이에는 유의한 차이가 없었다. 산소섭취량은 선수군에서 안정시 1.0±0.4 ㎖/㎏/min로부터 운동중 32.6 ㎖/㎏/min까지 증가하여 최대산소섭취량의 72.9%에 달했으며 비선수군에서는 안정시 1.4±0.3 ㎖/㎏/min로부터 28.9 ㎖/㎏/min까지 증가하여 최대산소섭취량의 70.3%에 달하였다. 선수군의 산소섭취량은 비선수군에 비해 계속 낮은 경향을 보였다. Treadmill 속도 및 경사도와 산소섭취량 간의 중회귀분석 결과 중상관계수 0.9998로서 높은 상관관계를 나타내었다. Bruce법에 따른 운동시간과 산소섭취량 간의 회귀분석 결과 1차함수 회귀식에 대한 상관계수는 0.999였으나 3차함수 회귀식에 대한 상관계수는 0.99999로서 극히 높은 상관관계를 나타내었다. 심박수와 산소섭취량 간에는 상관계수 0.998 및 0.992로서 대체로 높은 직선적 상관관계를 나타내었다. 폐기능검사 결과 안정시 FVC, FEF_(0.2-1.2L), FEF_25% 및 MVV는 선수군에서 비선수군에 비해 유의(P<0.05)하게 높았다. 운동후 폐기능검사 성적은 비선수군에서는 안정시보다 저하된 경향을 보인데 비해 선수군에서는 향상된 경향을 보였다. The cardiorespiratory function was evaluated during and after a submaximal treadmill exercise and some regression equations were derived for estimation of oxygen uptake from exercise load, exercise time and the heart rate. A total of 30 high school boys, of whom 14 were athletic and 16 non-athletic, performed a submaximal treadmill exercise according to the Bruce protocol to the point when 80% of their maximum exercising capacity were reached. The heart rate, blood pressure, minute ventilation, CO_2 production and O_2 uptake were measured before, during and after exercise, and the pulmonary function test was performed before and after exercise. Heart rate was increased from 71.9±1.3 beats/min at rest to 178.0±2.0 during exercise which was 81.2±2.3% of the maximum heart rate in athletes, and from 81.8±2.4 beats/min at rest to 182.6±1.1 which was 79.6±2.0% of its maximum in non-athletes. Athletes showed significantly (P<0.01) lower heart rate than non-athletes throughout the experimental period. Minute ventilation was increased from 5.1±0.6 L/min at rest to 63.0 in athletes and from 5.2±0.5 L/min to 51.2 in non-athletes. Athletes and non-athletes showed no significant difference. Oxygen uptake was increased from 1.0±0.4 ㎖/㎏/min at rest to 32.6 which was 72.9% of maximum oxygen uptake in athletes, and from 1.4±0.3 ㎖/㎏/min to 28.9 which was 70.3% of the maximum in non-athletes. Athletes showed consistently lower oxygen uptake than non-athletes. Multiple regression analysis between treadmill speed and grade and the oxygen uptake showed a high correlation coefficient of 0.9998. A first order regression analysis between exercise time and oxygen uptake showed a correlation coefficient of 0.999, while a third order regression analysis showed an extremely high correlation coefficient of 0.99999. The heart rate and oxygen uptake showed a linear regression with a reasonably high correlation coefficient of 0.998 and 0.992. The pulmonary function test revealed significantly(P<0.05) higher FVC, FEF_(0.2-1.2L), FEF_25% and MVV at rest in athletes than in non-athletes. After exercise, athletes showed enhanced pulmonary function compared with the resting state while non-athletes showed more or less decreased.

비교반응이 감귤생육에 미치는 영향

金荊玉,吳現道 제주대학교 1971 논문집 Vol.3 No.-

Citrus growing in Cheju-do, Korea has increased remarkably for the past several years. In 1971 the citrus acreage in Cheju-do will have increased to 150,000 acres(6,000 hectars). To avoid frost, citrus growing in Cheju-do is confined to the coastal area below 200 metes avove sea level. The average orchard size is limited to small unit size. This has necessitated a high level of attention to individual tree health and production in orchard management. But in Cheju-do citrus farmers have not been able to solve various problems corretly in order to obtain maximum yield with high quality. Therefore, the solution of these problems necessitates the use of the systematic application methods fertilizers to citrus. From the experimental results of the application of some fertilizers to citrus unshu and the analysis of leaves, we gained important knowledge regarding citrus unshu. The effectiveness of fertilizers was studied under normal field conditions and with pot experiment in the field. The amount of fertilizer applied as base fertilizer was divided into 17 treatment with 8 factors. The effects of nitrogen on the trees were significant increases in height, trunk diameter, number of leaves, and length of branches, but the other mineral nutrient did not show such effect. Through leaf analysis the low calcium concentrations and very high iron and copper concentrations were determined. The first fertilizer applications were made in 1969 and records taken for the period 1970∼1971. This report is only the first presentation of data collected. These studies will be continued through 1974.

제주도 감귤원 토양의 V.A-mycorrhizae분포 및 사상균에 의한 인광석의 용해에 관한 연구

김형옥,유장걸,이신찬,R.M.N. Kucey 제주대학교 1984 논문집 Vol.17 No.-

The mycorrhizae spore densities (spore numbers/100g soil) were measured on six sites of citrus field by the floating method to estimate the mycorrhizae distniution on volcanic ash soil in Jejudo. Phosphate solubilizing fungi and bacteria in the soils were isolated and selected by the succesive pure culture in the potato dextrose agarcalcium phosphate (PDA-P) media. The phosphate solubilizing capacities of the sele-cted fungi were measured after incubating in the liquid media mixed with 200 mg of powdered rock phos-phate for one week. 1. The highest spore density (456/100g soil) was observed in the soil from the 6 years citrus field located on Samyangdong, Jeju-si and the next one (385/100g soil) from the 18 years citrus field at the same place. The soils from Topyeongdong, Seogwipo-si (1)(2) were found to contain lower mycorrhizae spores than other sampling sites, 256/100g soil at seven years citrus field and 166/10g soil at twenty one years citrus field. 2. Colony radii and halo radii of bacteria measured 4mm - 11mm and 6mm-22mm, and colony radii and halo radii of fungi were 8mm-12mm and 14mm-18mm respectively when they were incubated in PDA-P media for one week. 3. The selected fungi, based on the radius size of colony and halo, dissolved 0.46mg-2.64mg P_(2)0_(3) from 200mg of powdered rock phosphate in the liquid media.

熱帶 및 亞熱帶農業硏究의 意義

金瀅玉 濟州大學校 亞熱帶農業硏究所 1984 亞熱帶農業硏究 Vol.1 No.-

우리나라에 있어서의 열대 및 아열대농업에 관한 연구의 의의는 두가지 관점에서 고찰할 수 있을 것으로 본다. 첫째는 열대 및 아열대권에 있는 국가들에 대한 농업생산기술의 지원을 위한 것으로 이는 국제화시대에 대응하는 국책적 관점에서 생각할 수 있는 것이고 둘째는 열대 및 아열대작물의 국내도입을 위한 것이니 이로서 재배작물의 종류를 보다 다양하게 증가시키고 아울러 농업수준도 향상시킴으로써 지역농업의 진흥은 물론 국내농업의 발전에도 이바지한다는 관점에 있다. 열대작물의 도입재배는 엄격히 말해서 열대농업이라고 볼 수는 없을 것이나 Subject line을 따라서 생각할 때는 연구의 의의가 있다고 본다.

중소도시 하수관거의 침입수량 및 수질오염 원단위 산정

김옥형,박승기,정재훈,임경호 公州大學校 工學硏究院 生産技術硏究所 2004 論文集 Vol.12 No.-

The volume of wastewater in combined sewers in study areas usually exceeds capacities of the sewer system or the treatment plant during storms. For this reason, combined sewer systems are designed to overflow occasionally and discharge excess waste water. The 6 monitoring sites were selected from two small cities near the Hongsung prefecture during over a rainy season. Monitoring was performed by collecting grab samples and by measuring the rainfall and flow rates during dry and wet seasons. Generally the flow rate of wastewater in combined sewers was rapidly decreased after 23:00 PM and gradually increased from 06:30 AM in all sites during the dry season. Due to monitoring and statistical analysis, the groundwater contributes on sewage volume increase (average 3.4-25.4% more) during experimental periods. Therefore, this research is focus on the investigation of the effects of stormwater and groundwater to combined sewer systems.

Rebounder 運動負荷後 恢復期의 心肺機能의 變化

裵玉錫,黃樹寬,金亨鎭,朱永恩 慶北大學校 醫科大學 1982 慶北醫大誌 Vol.23 No.2

20∼22歲의 男子大學生 61名을 硏究對象으로 하여 選手群(21名)과 非選手群(40名)으로 區分하였다 運動負荷는 rebouner에 垂直뛰기를 一分間에 80回程度로 3分동안 實施했으며, 運動後 恢復期 1, 3, 5, 10 및 20分에서 心搏數, 血壓, 呼吸數의 恢復樣相을 觀察하였다. 이로써 체력단속이 恢復期의 心肺機能에 미치는 影響을 分析하고 나아가서 恢復期의 心肺反應이 體力을 評價하는 指標가 될 것인가를 알고자 試圖한 本 硏究結果를 要約하면 다음과 같다. 安靜狀態의 心搏數는 選手群이 非選手群에 比해서 有意하게 낮았으며 血壓 및 呼吸數는 別 差異가 없었다. 運動負荷後 心搏數의 恢復은 選手群은 恢復 1分에 86.4±3.22回로서 非選手群의 118.0±2.81回에 比해 有意하게 낮았고, 兩群 모두 恢復初期에는 急速한 恢復을 보였으며 選手群이 非選手群에 比해 繼續有意하게 낮은 값으로 빠른 速度로 恢復되었다. 運動負荷後 收縮期血壓의 恢復樣相은 選手群이 非選手群보다 繼續 낮은 값으로 恢復되었으며, 特히 恢復 1分에 選手群은 161.2±1.78mmHg로 非選手群의 174.1±3.41mmHg에 比해 有意하게 낮았다. 兩群 모두 恢復初期에 急速히 恢復하여 恢復10分에는 安靜狀態로 恢復되었다. 그리고, 擴張期血壓은 非選手群은 期動後 安靜狀態보다 有意하게 높았으며, 選手群은 오히려 安靜狀態보다 낮았다. 平均動脈壓은 恢復初期에 選手群이 非選手群보다 높은 값으로 恢復되었으나 恢復10分부터는 거의 같은 값으로 恢復되었다. 脈壓은 選手群이 非選手群에 比해 繼續 有意하게 낮은 값으로 恢復되었다. 運動負荷後 呼吸數는 恢復 1分에 選手群에서는 27.1±1.23回로 非選手群의 35.5±1.17回에 比해 有意하게 낮았고, 兩群 모두 恢復 1,3分에 急速히 恢復되었으며, 選手群이 非選手群에 比해 繼續 有意하게 낮은 값으로 恢復되었다. 本硏究結果를 綜合하면 rebounder 運動負荷後 選手群의 心搏數, 血壓 및 呼吸數가 非選手群에 比해 有意하게 낮았으며, 그 恢復速度도 빨랐다. 특히 心搏數는 選手群과 非選手群 사이에 恢復初期부터 恢復 20分까지 繼續 有意한 差異를 나타낸 점은 體力을 客觀的으로 評價하는 重要한 資料가 될 것으로 思料되는 바이다. Sixty-one male subjects aged between 20-22 years were divided into the athletic and non-athletic groups. Exercise was performed as vertical jump on a rebounder at 80 times per min for 3min. The heart rate, blood pressure, and respiratory rate were measured at 1, 3, 5, 10, and 20min after exercise in an effort to analyze the effect of the physical training on the cardiopulmonary function during the recovery period, and to find out if the cardiopulmonary responses during recovery period can be an index of physical fitness. The results are summarized as follows. In resting state, the heart rate was significantly lower in athletes than in non-athletes, while blood pressure and respiratory rate showed no significant difference between the two groups. The heart rate at 1min after the exercise was 86.4±3.22 in athletes which was significantly lower than 118.5±7.85 in non-athletes. The heart rate at the initial stage after exercise showed a rapid recovery in both groups. In athletes, it showed a rapid recovery to reach a significantly lower level than that of non-athletes. The systolic pressure was lower in athletes than in non-athletes throughout the recovery period. In particular, systolic pressure at 1min after the exercise was 161.2±1.78 mmHg in athletes which was significantly lower than 174.1±3.41mmHg in non-athletes. Systolic pressure at initial stage after the exercise showed a rapid recovery, and the resting value was retored in 10 min in both groups. Diastolic pressure during the recovery period was significantly higher in non-athletes and lower in athletes than the resting level.

濟州道 火山灰土壤의 燐酸動態에 關한 硏究

金瀅玉 제주대학교 1974 논문집 Vol.6 No.-

This paper deals with the behaveior of phopshorus applied to Cheju volcanic ash soil. I used the Freundlich isotherm equation in my calculations. The results obtained are sumarized as follows. 1. The amount of phosphorus absorbed agreed very clously with the Freundlich isotherm equaion. 2. The linear regression of the Freundlich isotherm turned about anticlockwise, the constant K increased and the constant n decreased when the temperature was raised 3. The amount of phosphorus adsorbed and the Ca-P content expressed well a correlatior where its correlation coefficient was r=-0.65**, Inorg, P content r=-0.05*, Total P content r=-0.54* and Org. C content r=0.52*, but other physical and chemical properties were insignificant.

식물근권중의 질소고정균 특성에 관한 연구

김형옥,황다리아,유장걸 제주대학교 방사능이용연구소 1988 연구보고 Vol.3 No.-

본 연구는 아열대성 기후를 가지는 제주지역의 벼의 근권중에 서식하는 질소고정균의 특성을 조사하고자 수행되었다. MPN방법을 이용, 제주도내의 수도재배 5개 지역과 육도재배 6개 지역에서의 질소고정균 밀도와 분포를, 그리고 미생물과 토양의 화학적 성질과의 상호관계를 검토하였고, 한편 이들로부터 질소환원효소 활성이 높은 미생물을 선발하여 그들의 생리적 특성과 식물과의 상호관계에 관한 연구를 수행하였다. 1. 수도 뿌리중의 미생물 밀도는 육도와 비슷한 수준이었다. 그리고 근권토양의 미생물 밀도는 육도지역이 수도지역보다 potato agar배지와 dobereiner배지에서 더 높았지만 azotobacter배지에서는 반대로 논토양이 밭토양보다 미생물 밀도가 더 높았다. 2. 뿌리중의 미생물 밀도는 모든 조사대상 지역에서 토양보다 더 높게 나타났다. 3. 지역간의 MPN 값을 보면 수도에서는 시료 채취지역간에 비슷하였는데, 육도에서는 태흥, 송당, 시흥이 다른 곳에 비해 미생물 밀도가 더 높았다. 4. 사용한 배지에 따른 MPN 값은 뿌리와 토양에 관계없이 potato agar 배지에서 제일 높았고, dob + multivitamin 배지, dobereiner 배지, 그리고 azotobacter배지의 순서로 낮았다. 5. 이와같은 미생물의 밀도분포는 토양의 화학성 즉, 유기물함량, 전인산, 전질소와 밀접한 정의상관( 1% 유의성 ) 을 보였다. 6. 선발된 질소고정미생물(HP, SU, TU)은 탄소원 및 blotin요구도, pH, 8 % NaCl 배지에서의 생장여부 등 생리적 특성에 있어서 azospirillum brasilence와 유사하였다. 7. 또한, 이들 질소고정미생물은 무균적으로 재배된 벼의 뿌리에 흡착되어 협생할 수 있었고, 흡착정도는 선발된 미생물 모두 비슷한 경향이었으나 수도보다는 육도에 더 잘 흡착되었다. 8. 한편, 식물뿌리에 협생된 미생물의 acetylene환원력은 수도지역에서 분리된 질소고정 미생물(HP)의 경우 육도보다 수도에서, 육도지역에서 분리된 미생물은 수도보다 육도에서 더 높았다. The distribution and characteristics of nitrogen fixing bacteria associated with the rice plant roots were investigated, taking the roots and soil samples from five paddy and six upland fields on Cheju-do. In the first year, the population density of root associative microorganisms existing in the rice roots and soil was determined using MPN method and correlated with chemical properties of the soils. In the second year, the N-fixing bacteria (HP, SU, TU) having high acetylene reduction capacity were selected and their physiological characteristics were examined, comparing with A. brasilence and A. lipoferum. Association of the selected bacteria with the rice roots was confimed in vitro under the asceptic condition. 1. The population density of microorganisms existing in the paddy rice roots was similar to that of the upland rice roots. The upland soils showed higher MPN on potato agar and Dobereiner media than the paddy soils. On Azotobacter media, however, the paddy soils higher MPN than the upland soils. 2. Regardless of sampling sites, and the used media, much more microorganisms ( general heterotrophic and N-fixing ) were observed in the roots than in the soils. 3. In the paddy rice fields, all the sampling sites gave very similar MPN in both the roots and the soils. In the uplands, however, microoraganism densities were varied with the sampling sites; Tacheung, Songdang, and Siheung showed higher MPN in the roots and in the soils, than the other sampling sites. 4. There were highly significant differences in MPN depending on the media. Potato agar media showed the highest MPN, which decreased in the order of Dob.+multivitamin media, Dobereiner media, and Azotobacter media. 5. Statistically significant correlation was found between the population density of microorganisms in the soils ( upland and paddy field ) and the soil chemical properties such as organic matter, total N, total P, and pH. 6. The physilological characteristics of nitrogen fixing bacteria (HP, SU, TU) selected were similar to those of A. brasilence. 7. All of the selected bacteria (HP,SU, TU) made good association with the paddy and upland rice roots, showing better association in the upland than in the paddy rice. 8. The bacteria isolated from the paddy fields made higher acetylene reduction when associated with the paddy rice than with the upland rice while the bacteria from the upland had more acetylene reduction on the upland rice roots than on the paddy rice roots.