• 제목/요약/키워드: the mean

검색결과 50,077건 처리시간 0.087초

미세균열이 합천지역 쥬라기 화강암의 압열인장강도에 미치는 영향 (Influence of Microcrack on Brazilian Tensile Strength of Jurassic Granite in Hapcheon)

  • 박덕원;김경수
    • 광물과 암석
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    • 제34권1호
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    • pp.41-56
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    • 2021
  • ① 미세균열의 길이(N=230), ② 미세균열의 간격(N=150) 및 ③ 압열인장강도(N=30)를 이용하여 쥬라기의 합천화강암에서 발달된 여섯 결(R1~H2)의 특성을 분석하였다. 여섯 결에 평행한 방향으로 측정한 이들 세 인자에 대한 18개의 누적그래프를 상호 대비하였다. 분석한 주요 결과를 요약하면 다음과 같다. 첫째, 9개 계급구간으로 구분한 압열인장강도값(kg/㎠)의 분포율(%)은 60~70(3.3) < 140~150(6.7) < 100~110·110~120(10.0) < 90~100(13.3) < 80~90(16.7) < 120~130·130~140(20.0)의 순으로 증가한다. 각 계급구간의 빈도수에 따른 강도의 분포곡선은 이봉 분포를 보여 준다. 둘째, 길이, 간격 및 인장강도에 대한 그래프를 H2 < H1 < G2 < G1 < R2 < R1의 순으로 배열하였다. 간격과 길이에 대한 두 그래프 사이의 지수차(λS-λL, Δλ)는 H2(-1.59) < H1(-0.02) < G2(0.25) < G1(0.63) < R2(1.59) < R1(1.96)(2 < 1)의 순으로 증가한다. 관련 도면으로부터, 상기한 지수차의 증가와 함께 인장강도에 대한 여섯 그래프는 점차 좌측 방향으로 이동한다. 조직의 균일도를 지시하는 인장강도에 대한 그래프의 음의 기울기(a)는 3번 결((H1+H2)/2, 0.116) < 2번 결((G1+G2)/2, 0.125) < 1번 결((R1+R2)/2, 0.191)의 순으로 증가한다. 셋째, 각 결(R1·R2(1번 결), G1·G2(2번 결), H1·H2(3번 결))을 구성하는 두 방향에 대한 그래프 사이의 배열순을 비교하였다. 길이와 간격에 대한 두 그래프의 배열순은 상호 역순이다. 간격과 인장강도에 대한 두 그래프는 배열순에서 서로 일관성이 있다. 길이와 간격에 대한 지수차(ΔλL 및 ΔλS)는 1번 결(R, -0.08) < 2번 결(G, 0.14) < 3번 결(H, 0.75) 및 3번 결(H, 0.16) < 2번 결(G, 0.23) < 1번 결(R, 0.45)의 순으로 각각 증가한다. 넷째, 미세균열의 길이, 미세 균열의 간격 및 인장강도의 분포 특성을 보여 주는 여섯 그래프에 대한 종합도를 작성하였다. 길이의 범위에 따라, 여섯 그래프는 G2 < H2 < H1 < R2 < G1 < R1(<7 mm) 및 G2 < H1 < H2 < R2 < G1 < R1(≦2.38 mm)의 순을 보여 준다. 간격에 대한 여섯 그래프는 누적 빈도수 12 및 간격 0.53 mm에 해당하는 지점 부근에서 병목구간을 형성하여 서로 교차한다. 다섯째, 여섯 결을 대변하는 각 파라미터의 여섯 값을 증가 및 감소하는 순으로 배열하였다. 길이와 관련된 8개 파라미터 중에서, 총 길이(Lt) 및 그래프(≦2.38 mm)는 배열순에서 상호 부합한다. 간격과 관련된 7개 파라미터 중에서, 간격의 빈도수(N), 평균 간격(Sm) 및 그래프(≦5 mm)는 배열순에서 상호 일관성이 있다. 배열순의 측면에서, 간격에 대한 상기 세 파라미터의 값은 그룹 E에 속하는 최대인장강도와 일관성이 있다. 표 8에서와 같이, 이들 파라미터 값의 배열순은 여섯 결 및 세채석면에 대한 사전 인식에 유용하다.

운동훈련(運動訓練)에 대(對)한 심폐기능(心肺機能)의 적응(適應)에 관(關)한 연구(硏究) (Cardio-pulmonary Adaptation to Physical Training)

  • 조강하
    • The Korean Journal of Physiology
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    • 제1권1호
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    • pp.103-120
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    • 1967
  • As pointed out by many previous investigators, the cardio-pulmonary system of well trained athletes is so adapted that they can perform a given physical exercise more efficiently as compared to non-trained persons. However, the time course of the development of these cardio-pulmonary adaptations has not been extensively studied in the past. Although the development of these training effects is undoubtedly related to the magnitude of an exercise load which is repeatedly given, it would be practical if one could maintain a good physical fitness with a minimal daily exercise. Hence, the present investigation was undertaken to study the time course of the development of cardio-pulmonary adaptations while a group of non-athletes was subjected to a daily 6 to 10 minutes running exercise for a period of 4 weeks. Six healthy male medical students (22 to 24 years old) were randomly selected as experimental subjects, and were equally divided into two groups (A and B). Both groups were subjected to the same daily running exercise (approximately 1,000 kg-m). 6 days a week for 4 weeks, but the rate of exercise was such that the group A ran on treadmill with 8.6% grade for 10 min daily at a speed of 127 m/min while the group B ran for 6 min at a speed of 200 m/min. In order to assess the effects of these physical trainings on the cardio-pulmonary system, the minute volume, the $O_2$ consumption, the $CO_2$ output and the heart rate were determined weekly while the subject was engaged in a given running exercise on treadmill (8.6% grade and 127 m/min) for a period of 5 min. In addition, the arterial blood pressure, the cardiac output, the acid-base state of arterial blood and the gas composition of arterial blood were also determined every other week in 4 subjects (2 from each group) while they were engaged in exercise on a bicycle ergometer at a rate of approximately 900 kg m/min until exhaustion. The maximal work capacity was also determined by asking the subject to engage in exercise on treadmill and ergometer until exhaustion. For the measurement of minute volume, the expired gas was collected in a Douglas bag. The $O_2$ consumption and the $CO_2$ output were subsequently computed by analysing the expired gas with a Scholander micro gas analyzer. The heart rate was calculated from the R-R interval of ECG tracings recorded by an Offner RS Dynograph. A 19 gauge Cournand needle was inserted into a brachial artery, through which arterial blood samples were taken. A Statham $P_{23}AA$ pressure transducer and a PR-7 Research Recorder were used for recording instantaneous arterial pressure. The cardiac output was measured by indicator (Cardiogreen) dilution method. The results may be summarized as follows: (1) The maximal running time on treadmill increased linearly during the 4 week training period at the end of which it increased by 2.8 to 4.6 times. In general, an increase in the maximal running time was greater when the speed was fixed at a level at which the subject was trained. The mammal exercise time on bicycle ergometer also increased linearly during the training period. (2) In carrying out a given running exercise on treadmill (8.6%grade, 127 m/min), the following changes in cardio·pulmonary functions were observed during the training period: (a) The minute volume as well as the $O_2$ consumption during steady state exercise tended to decrease progressively and showed significant reductions after 3 weeks of training. (b) The $CO_2$ production during steady state exercise showed a significant reduction within 1 week of training. (c) The heart rate during steady state exercise tended to decrease progressively and showed a significant reduction after 2 weeks of training. The reduction of heart rate following a given exercise tended to become faster by training and showed a significant change after 3 weeks. Although the resting heart rate also tended to decrease by training, no significant change was observed. (3) In rallying out a given exercise (900 kg-m/min) on a bicycle ergometer, the following change in cardio-vascular functions were observed during the training period: (3) The systolic blood pressure during steady state exercise was not affected while the diastolic blood Pressure was significantly lowered after 4 weeks of training. The resting diastolic pressure was also significantly lowered by the end of 4 weeks. (b) The cardiac output and the stroke volume during steady state exercise increased maximally within 2 weeks of training. However, the resting cardiac output was not altered while the resting stroke volume tended to increase somewhat by training. (c) The total peripheral resistance during steady state exercise was greatly lowered within 2 weeks of training. The mean circulation time during exorcise was also considerably shortened while the left heart work output during exercise increased significantly within 2 weeks. However, these functions_at rest were not altered by training. (d) Although both pH, $P_{co2}\;and\;(HCO_3-)$ of arterial plasma decreased during exercise, the magnitude of reductions became less by training. On the other hand, the $O_2$ content of arterial blood decreased during exercise before training while it tended to increase slightly after training. There was no significant alteration in these values at rest. These results indicate that cardio-pulmonary adaptations to physical training can be acquired by subjecting non-athletes to brief daily exercise routine for certain period of time. Although the time of appearance of various adaptive phenomena is not identical, it may be stated that one has to engage in daily exercise routine for at least 2 weeks for the development of significant adaptive changes.

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감정예측모형의 성과개선을 위한 Support Vector Regression 응용 (Application of Support Vector Regression for Improving the Performance of the Emotion Prediction Model)

  • 김성진;유은정;정민규;김재경;안현철
    • 지능정보연구
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    • 제18권3호
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    • pp.185-202
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    • 2012
  • 오늘날 정보사회에서는 정보에 대한 가치를 인식하고, 이를 위한 정보의 활용과 수집이 중요해지고 있다. 얼굴 표정은 그림 하나가 수천개의 단어를 표현할 수 있듯이 수천 개의 정보를 지니고 있다. 이에 주목하여 최근 얼굴 표정을 통해 사람의 감정을 판단하여 지능형 서비스를 제공하기 위한 시도가 MIT Media Lab을 필두로 활발하게 이루어지고 있다. 전통적으로 기존 연구에서는 인공신경망, 중회귀분석 등의 기법을 통해 사람의 감정을 판단하는 연구가 이루어져 왔다. 하지만 중회귀모형은 예측 정확도가 떨어지고, 인공신경망은 성능은 뛰어나지만 기법 자체가 지닌 과적합화 문제로 인해 한계를 지닌다. 본 연구는 사람들의 자극에 대한 반응으로서 나타나는 얼굴 표정을 통해 감정을 추론해내는 지능형 모형을 개발하는 것을 목표로 한다. 기존 얼굴 표정을 통한 지능형 감정판단모형을 개선하기 위하여, Support Vector Regression(이하 SVR) 기법을 적용하는 새로운 모형을 제시한다. SVR은 기존 Support Vector Machine이 가진 뛰어난 예측 능력을 바탕으로, 회귀문제 영역을 해결하기 위해 확장된 것이다. 본 연구의 제안 모형의 목적은 사람의 얼굴 표정으로부터 쾌/불쾌 수준 그리고 몰입도를 판단할 수 있도록 설계되는 것이다. 모형 구축을 위해 사람들에게 적절한 자극영상을 제공했을 때 나타나는 얼굴 반응들을 수집했고, 이를 기반으로 얼굴 특징점을 도출 및 보정하였다. 이후 전처리 과정을 통해 통계적 유의변수를 추출 후 학습용과 검증용 데이터로 구분하여 SVR 모형을 통해 학습시키고, 평가되도록 하였다. 다수의 일반인들을 대상으로 수집된 실제 데이터셋을 기반으로 제안모형을 적용해 본 결과, 매우 우수한 예측 정확도를 보임을 확인할 수 있었다. 아울러, 중회귀분석이나 인공신경망 기법과 비교했을 때에도 본 연구에서 제안한 SVR 모형이 쾌/불쾌 수준 및 몰입도 모두에서 더 우수한 예측성과를 보임을 확인할 수 있었다. 이는 얼굴 표정에 기반한 감정판단모형으로서 SVR이 상당히 효과적인 수단이 될 수 있다는 점을 알 수 있었다.

퇴원환자의 가정간호 이용의사와 관련 요인 (A Study on the Expressed Desire at Discharge of Patients to Use Home Nursing and Affecting Factors of the Desire)

  • 이지현;이영은;이명화;손수경
    • 재활간호학회지
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    • 제2권2호
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    • pp.257-270
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    • 1999
  • The purpose of this study is to investigate factors related to the intent of using home nursing of chronic disease patients who got out of a university hospital. For the purpose, the study selected 153 patients who were hospitalized and left K university hospital with diagnoses of cancer, hypertension, diabetes and cerebral vascular accident and ordered to be discharged and performed interviews with them and surveys on their medical records to obtain the following results. For this study a direct-interview survey and medical record review was conducted from June 28 to Aug. 30, 1998. The frequency and mean values were computed to find the characteristics of the study subjects, and $X^2$-test, t-test, factor analysis and multiple logistic regession analysis were applied for the analysis of the data. The following results were obtained. 1) When characteristics of the subjects were examined, men and women occupied for 58.8% and 41.2%, respectively. The subjects were 41.3 years old in aver age and had the monthly aver age earning of 0.99 million won or below, which was the most out of the total subjects at 34.6%. Among the total, 87.6% resided in cities and 12.4 in counties. The most left the hospital with diagnosis of cancer at 51.6%, followed by hyper tension at 24.2%, diabetes at 13.7% and cerebral vascular accident at 7.2%. 2) 93.5% of the selected patients had the intent of using home nursing and 6.5%, didn't. Among those patients having the intent, 85.6% had the intent of paying for home nursing and 14.4%, didn't. The subjects expected that the nursing would be paid 9,143 won in aver age and 47.7% of them preferred national authorities as the main servers. 86.3% of the subjects thought that home nursing business had the main advantage of making it possible to learn nursing methods at home and thereby contributing to improving the ability of patients and their facilities to solve health problems. 3) Relations between the intent of use and characteristics of the subjects such as demography-related social, home environment, disease and physical function characteristics did not show statistically significant differences among one another. Compared to those who had no intent of using home nursing, the group having the intent had more cases of male patients, the age of 39 or below, residence in cities, 5 family member s or more, no existence of home nursing servers, leaving the hospital from a non-hospitalized building, disease development for five months or below, hospitalization for ten days or more, non-hospitalization with in the recent one month, two times or over of hospitalization, leaving the hospital with no demand of special treatment, operation underwent, poor results of treatment, leaving the hospital with demand of rehabilitation services, physical disablement and high evaluation point of daily life. 4) Among those patients having the intent of using home nursing, 47.6% demanded technical nursing and 55.9%, supportive nursing. As technical nursing,' inject into a blood vessel ' and 'treat pustule and teach basic prevention methods occupied for 57.4%, respectively, topping the list. Among demands of supportive nursing, 'observe patients 'status and refer them to hospitals or community resources as available, if necessary' was the most with percent age point of 59.5. Regarding the intent of paying for home nursing, 39.2% of those patients wishing to use the nursing responded paying for technical services and 20.2, supportive services. In detail, 70.0% wanted to pay for a service stated as 'inject into a blood vessel', highest among the former services and 30.7%, a service referred to as 'teaching exercises needed to make the body of patients move', highest among the latter. When this was analyzed in terms of a relation between the need(the need for home nursing) and the demand(the intent of paying for home nursing), The rate of the need to the demand was found two or three times higher in technical nursing(0.82) than in supportive nursing(0.35). In aspects of tech ical nursing, muscle injection(1.26, the 1st rank) was highest in the rate while among aspects of supportive nursing, a service referred to as 'teach exercises needed for making patients move their bodies normally'(0.58, the 1st rank). 5) factors I(satisfaction with hospital services), II(recognition of disease state), III(economy) and IV(period of disease) occupied for 34.4, 13.8, 11.9 and 9.2 percents, respectively among factors related to the intent by the subjects of using home nursing, totaled 59.3%. In conclusion, most of chronic disease patients have the intent of using hospital-based home nursing and satisfaction with hospital services is a factor affecting the intent most. Thus a post-management system is needed to continue providing health management to those patients after they leave the hospital. Further, supportive services should be provided in order that those who are satisfied with hospital services return to their community and live their in dependent lives. Based on these results, the researcher would make the following recommendation. 1) Because home nursing becomes more and more needed due to a sharp increase in chronic disease patients and elderly people, related rules and regulations should be made and implemented. 2) Hospital nurses specializing in home nursing should be cultivated.

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광주시 대기오염물질 배출량 변화추이에 관한 연구 (A study on the air pollutant emission trends in Gwangju)

  • 서광엽;신대윤
    • 환경위생공학
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    • 제24권4호
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    • pp.1-26
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    • 2009
  • We conclude the following with air pollution data measured from city measurement net administered and managed in Gwangju for the last 7 years from January in 2001 to December in 2007. In addition, some major statistics governed by Gwangju city and data administered by Gwangju as national official statistics obtained by estimating the amount of national air pollutant emission from National Institute of Environmental Research were used. The results are as follows ; 1. The distribution by main managements of air emission factory is the following ; Gwangju City Hall(67.8%) > Gwangsan District Office(13.6%) > Buk District Office(9.8%) > Seo District Office(5.5%) > Nam District Office(3.0%) > Dong District Office(0.3%) and the distribution by districts of air emission factory ; Buk District(32.8%) > Gwangsan District(22.4%) > Seo District(21.8%) > Nam District(14.9%) > Dong District(8.1%). That by types(Year 2004~2007 average) is also following ; Type 5(45.2%) > Type 4(40.7%) > Type 3(8.6%) > Type 2(3.2%) > Type 1(2.2%) and the most of them are small size of factory, Type 4 and 5. 2. The distribution by districts of the number of car registrations is the following ; Buk District(32.8%) > Gwangsan District(22.4%) > Seo District(21.8%) > Nam District(14.9%) > Dong District(8.1%) and the distribution by use of car fuel in 2001 ; Gasoline(56.3%) > Diesel(30.3%) > LPG(13.4%) > etc.(0.2%). In 2007, there was no ranking change ; Gasoline(47.8%) > Diesel(35.6%) > LPG(16.2%) >etc.(0.4%). The number of gasoline cars increased slightly, but that of diesel and LPG cars increased remarkably. 3. The distribution by items of the amount of air pollutant emission in Gwangju is the following; CO(36.7%) > NOx(32.7%) > VOC(26.7%) > SOx(2.3%) > PM-10(1.5%). The amount of CO and NOx, which are generally generated from cars, is very large percentage among them. 4. The distribution by mean of air pollutant emission(SOx, NOx, CO, VOC, PM-10) of each county for 5 years(2001~2005) is the following ; Buk District(31.0%) > Gwangsan District(28.2%) > Seo District(20.4%) > Nam District(12.5%) > Dong District(7.9%). The amount of air pollutant emission in Buk District, which has the most population, car registrations, and air pollutant emission businesses, was the highest. On the other hand, that of air pollutant emission in Dong District, which has the least population, car registrations, and air pollutant emission businesses, was the least. 5. The average rates of SOx for 5 years(2001~2005) in Gwangju is the following ; Non industrial combustion(59.5%) > Combustion in manufacturing industry(20.4%) > Road transportation(11.4%) > Non-road transportation(3.8%) > Waste disposal(3.7%) > Production process(1.1%). And the distribution of average amount of SOx emission of each county is shown as Gwangsan District(33.3%) > Buk District(28.0%) > Seo District(19.3%) > Nam District(10.2%) > Dong District(9.1%). 6. The distribution of the amount of NOx emission in Gwangju is shown as Road transportation(59.1%) > Non-road transportation(18.9%) > Non industrial combustion(13.3%) > Combustion in manufacturing industry(6.9%) > Waste disposal(1.6%) > Production process(0.1%). And the distribution of the amount of NOx emission from each county is the following ; Buk District(30.7%) > Gwangsan District(28.8%) > Seo District(20.5%) > Nam District(12.2%) > Dong District(7.8%). 7. The distribution of the amount of carbon monoxide emission in Gwangju is shown as Road transportation(82.0%) > Non industrial combustion(10.6%) > Non-road transportation(5.4%) > Combustion in manufacturing industry(1.7%) > Waste disposal(0.3%). And the distribution of the amount of carbon monoxide emission from each county is the following ; Buk District(33.0%) > Seo District(22.3%) > Gwangsan District(21.3%) > Nam District(14.3%) > Dong District(9.1%). 8. The distribution of the amount of Volatile Organic Compound emission in Gwangju is shown as Solvent utilization(69.5%) > Road transportation(19.8%) > Energy storage & transport(4.4%) > Non-road transportation(2.8%) > Waste disposal(2.4%) > Non industrial combustion(0.5%) > Production process(0.4%) > Combustion in manufacturing industry(0.3%). And the distribution of the amount of Volatile Organic Compound emission from each county is the following ; Gwangsan District(36.8%) > Buk District(28.7%) > Seo District(17.8%) > Nam District(10.4%) > Dong District(6.3%). 9. The distribution of the amount of minute dust emission in Gwangju is shown as Road transportation(76.7%) > Non-road transportation(16.3%) > Non industrial combustion(6.1%) > Combustion in manufacturing industry(0.7%) > Waste disposal(0.2%) > Production process(0.1%). And the distribution of the amount of minute dust emission from each county is the following ; Buk District(32.8%) > Gwangsan District(26.0%) > Seo District(19.5%) > Nam District(13.2%) > Dong District(8.5%). 10. According to the major source of emission of each items, that of oxides of sulfur is Non industrial combustion, heating of residence, business and agriculture and stockbreeding. And that of NOx, carbon monoxide, minute dust is Road transportation, emission of cars and two-wheeled vehicles. Also, that of VOC is Solvent utilization emission facilities due to Solvent utilization. 11. The concentration of sulfurous acid gas has been 0.004ppm since 2001 and there has not been no concentration change year by year. It is considered that the use of sulfurous acid gas is now reaching to the stabilization stage. This is found by the facts that the use of fuel is steadily changing from solid or liquid fuel to low sulfur liquid fuel containing very little amount of sulfur element or gas, so that nearly no change in concentration has been shown regularly. 12. Concerning changes of the concentration of throughout time, the concentration of NO has been shown relatively higher than that of $NO_2$ between 6AM~1PM and the concentration of $NO_2$ higher during the other time. The concentration of NOx(NO, $NO_2$) has been relatively high during weekday evenings. This result shows that there is correlation between the concentration of NOx and car traffics as we can see the Road transportation which accounts for 59.1% among the amount of NOx emission. 13. 49.1~61.2% of PM-10 shows PM-2.5 concerning the relationship between PM-10 and PM-2.5 and PM-2.5 among dust accounts for 45.4%~44.5% of PM-10 during March and April which is the lowest rates. This proves that particles of yellow sand that are bigger than the size $2.5\;{\mu}m$ are sent more than those that are smaller from China. This result shows that particles smaller than $2.5\;{\mu}m$ among dust exist much during July~August and December~January and 76.7% of minute dust is proved to be road transportation in Gwangju.

전나무림, 잣나무림 유역에서 수관통과우와 수간유하수의 수소이온농도 및 전기전도도에 미치는 산림시업의 영향 (Influences of Forest Management Practices on pH and Electrical Conductivity in the Throughfall and Stemflow with the Abies holophylla and Pinus koraiensis Dominant Watershed)

  • 정용호;김경하;박재현
    • 생태와환경
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    • 제35권1호통권97호
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    • pp.52-61
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    • 2002
  • 이 연구는 전나무림과 잣나무림에서 산림시업에 따른 산림의 수질정화기능을 평가하기 위한 기초자료를 제공하기 위하여 광릉시험림 31, 33임반내 산림시업지 전나무림, 잣나무림 유역에서 1999년 5월부터 1999년 11월까지 7개의 단위강우를 대상으로 강우, 임내우를 강우직 후 초기와 그 이후 총량의 pH및 전기전도도 등을 분석한 결과는 다음과 같다. 1)초기수관통과우의 평균 pH는 전나무림 시업구>잣나무림 시업구>잣나무림 비시업구>전나무림 비시업구의 순이었으며, 총수관통과우의 평균 pH는 전나무림 시업구>잣나무림 시업구>전나무림 비시업구>잣나무림비시업구의 순으로 전나무림, 잣나무림 모두 시업구가 비시업구보다 수목의 pH완충효과가 더 발휘되는 것으로 분석되었다. 2)비시업구에서 총수관통과우의 pH=0.735${\times}$초기수관통과우의 pH+1.849($R^2\;=\;0.82$)이었고, 시업구에서 총수관통과우의 pH = 0.863${\times}$초기수관통과우의 PH+1.0242 ($R^2\;=\;0.87$)이었다. 또한, 비시 업구에서 총수간유하수의 pH=0.58${\times}$초기수간유하수의 pH+2.7709 ($R^2\;=\;0.64$)이었고, 시업구에서 총수간유하수의 pH=0.5854${\times}$초기수간유하수의 pH+2.7046 ($R^2\;=\;0.65$)이었다. 3) 초기수관통과우, 총수관통과우에서 평균전기전도도는 전나무림 비시업구>전나무림 시업구>잣나무림 비시업구>잣나무림 시업구의 순이었다. 4)비시업구에서 총수관통과우의 전기전도도=0.4046${\times}$초기수관통과우의 전기전도도+26.766 ($R^2\;=\;0.69$)이었고, 시업구에서 총수관통과우의 전기전도도=0.6002${\times}$초기수관통과우의 전기전도도+8.0184 ($R^2\;=\;0.54$)이었다. 또한, 비시업구에서 총수간유하수의 전기전도도=0.6298${\times}$초기수간유하수의 전기전도도+11.582 ($R^2\;=\;0.72$)이었고, 시업구에서 총수간유하수의 전기전도도=0.602${\times}$초기수간유하수의 전기전도도+20.783 ($R^2\;=\;0.49$)이었다.

Xylazine이 histamine 유리에 미치는 영향 (Effect of xylazine hydrochloride on histamine release)

  • 김영환;박준형
    • 한국동물위생학회지
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    • 제25권1호
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    • pp.53-73
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    • 2002
  • It has been reported that degranulation of mast cells in rats, rabbits and dog was observed after dosing xylazine hydrochloride(Xh) which has been widely used as sedative, analgesic and muscular relaxant. Therefore, this experiment was conducted to examine the relations between Xh and histamine release and to identify the action of ${\alpha}$-adrenoceptors which exists on the suface of mast cells. 1. The content of histamine within serum was measured with HPLC by performing the O-phthalaldehyde(OPA) fluorescent derivation. The pretreatment method had a little modification from the conventional method. The pretreament was carried out in the following method. 0.2$m\ell$ of serum and 1$m\ell$ of butanol were added to mixed together and then the liquid was centrifugally separated at 4$^{\circ}C$ and 2,000 rpm for 3 minutes. 0.4$m\ell$ of 0.1N HCl and 1.6$m\ell$ of heptane were added to 0.8$m\ell$ of supernatant taken from the liquid, and they were mixed together. This mixture was also centrifugally separated at 4$^{\circ}C$ and 2,000 rpm for 5 minutes. The supernatant was thrown away and the OPA fluorescent derivation was carried out with 0.2$m\ell$ of the lower liquid then, 5 minutes after mixing 400${\mu}\ell$ of 0.1N HCl, 120${\mu}\ell$ of 1N NaOH and 40${\mu}\ell$ of 0.1% OPA in the 0.2$m\ell$ of the lower liquid,120${\mu}\ell$ of 3.57N H$_3$PO$_4$ was added to the mixed liquid, and the liquid, was mixed again and syringe-filtered. Then, the measurement was done with HPLC in the 30 : 70(ν/ν) ratio of 0.004M KH$_2$PO$_4$: CH$_3$CN, flow rate of 1.0$m\ell$/min., and a wavelength of λex= 350nm and λem=444nm at the column temperature of 27$^{\circ}C$, using the fluorescence detector. 2. The content of histamine in each laboratory animal appeared to be higher in such an order as rabbit, rat, guinea pig, dog, Korean indigenous goat, swine, Korean indigenous cattle, Holstein, and mouse, of which the individual mean values${\pm}$standard deviation were 2.0668 ${\pm}$ 0.6049. 0.4999 ${\pm}$ 0.2278, 0.4241 ${\pm}$ 0.1974, 0.1054 ${\pm}$ 0.0556, 0.1028 ${\pm}$ 0.0276, 0.0972 ${\pm}$ 0.0513, 0.0872 ${\pm}$ 0.0373, 0.0717 ${\pm}$ 0.0379, and 0.0706 ${\pm}$ 0.0366, respectively. 3. The content of histamine was measured at the moments of 15-, 30-, 60-, 120-minutes after inoamuscular injection of 20mg/100kg Xh into two to 4 years old Holstein weighing 600∼700kg. The result showed that there was a significant increase at the times of 30- and 90-minutes after injection(p<0.05). 4. Intramuscular injection of 3mg/10kg Xh was given to crossbred pug dogs weighing 2.5∼4.3kg. The content of histamine was measured at the times of 30-, 60-, 90- and 120-minutes after injection. The result revealed that there was a significant increase at the times of 60-and 90-minutes after injection(p<0.05). 5. Intramuscular injection of 10mg/$m\ell$∼25mg/$m\ell$ Xh in concentration of 0.1$m\ell$ was applied to Korean indigenous goat over 5 months old. Then, the content of histamine was measured at the times of 15-, 30-, 60- and 90-minutes after injection. A significant increase was shown at the times of 30- and 60-minutes after injection(p<0.05). 6. The content of histamine was measured at the moments of 30- and 60-minutes after intramuscular injection of 0.1-0.2$m\ell$ Xh (20mg/$m\ell$) into male rabbits weighting 2.5-4kg. A significant increase was found at the moment of 60 minutes after injection(p<0.001). 7. After administering Xh to the mast cell taken from the abdominal cavity of mouse, the content of histamine was measured. The result showed that the higher the concentration, the more significantly the content of histamine was increased(p<0.05). 8. Compound 48/80 was administered in concentration of 5$\mu\textrm{g}$/$m\ell$ and 10$\mu\textrm{g}$/$m\ell$ to the mast cell picked from the abdominal cavity of mouse. The result showed that there was a significant increase in the content of histamine in case of the concentration of 10$\mu\textrm{g}$/$m\ell$(p<0.05). It was found to be about 10,000 to 500,000 times stronger than the Xh. 9. After premedication of 1mg/kg of yohimbine hydrochloride as ${\alpha}$$_2$-adrenergic antagonist to rabbits, the Xh was administered to them. The result was that the value of histamine within serum was decreased significantly(p<0.001). 10. After premeditation of 1mg/kg of prazosin hydrochloride as ${\alpha}$$_1$-adrenergic antagonist to rabbits, the Xh was administered to them. It was found that the value of histamine within serum was decreased significantly(p<0.005). 11, Prazosin hydrochloride and yohimbine hydrochloride as ${\alpha}$$_1$-adrenergic antagonist, respectively, and ${\alpha}$$_2$-adrenergic antagonist were administerd. In this case, the value of histamine within serum was decreased significantly(p<0.0001). As the results, when the Xh is administered to various kinds of animals, the amount of histamine release within serum is increased. In view of the results so far achieved, it is concluded that Xh acted on both a$_1$-adrenoreceptor and ${\alpha}$$_2$-adrenoreceptor induces the degranulation of mast cell.

한국(韓國) 일부(一部) 농촌주민(農村住民)에 대(對)한 혈액학적(血液學的) 고찰(考察) -혈압치(血壓値)와 적혈구용적치관계(赤血球容積値關係)를 중심(中心)으로- (A Hematological Study on Korean of Rural Community - Correllation on Blood Pressure, Hematocrit-)

  • 남택승;강득용
    • 농촌의학ㆍ지역보건
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    • 제2권1호
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    • pp.36-42
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    • 1977
  • A study on blood pressure and hematocrit values of 1,559 people in 19 Korean rural areas was carried out in 1974 and the results were analyzed statistically. Obtained as follows: 1. The blood pressure according to sex and age groups (from the twenties to the seventies) was as follows: 1) The blood pressure of male by age group il) In the twenties, M (mean) was 125. 85/74, 15mm/Hg, a (standard deviation) was 15.9/10.2, and ill (standard error) was 1.55/0.99. (2) In the thirties, ${\delta}$ was 123.93/77.19 mm/Hg, a was 14.4/10.8, and m was 1.24/0.93. (3) In the forties, M was 128.44/81.15 mm/Hg, a was 23.9/14.7, and m was 2.16/1.33. (4) In the fifties, M was 128.48/181.24 mm/Hg, a was 24.7/13.9, and m was 2.05/1.16. (5) In the sixties, M was 135.80/81.70 mm/Hg, a was 27.4/18.8, and ${\delta}$ was 2.74/1.88. (6) In the seventies, M was 146.84/83. 16mm/Hg, ${\delta}$ was 24.5/10.0, and m was 5.62/2.30. 2) The blood pressure of female by age group (1) In the twenties, M was 117.89/73.33 mm/Hg, ${\delta}$ was 15.7/12.1, and m was 1.42/1.09. (2) In the thirties, M was 118.04/75.71 mm/Hg, ${\delta}$ was 16.9/13.0, and m was 1.13/0.87. (3) In the forties, M was 120.92/78.17 mm/Hg, ${\delta}$ was 20.9/12.9, and m was 1.42/0.87. (4) In the fifties, M was 122.14/79.55 mm/Hg, ${\delta}$ was 24.2/15.9, and m was 1.63/1.07. (5) In the sixties, M was 131.57/84.29 mm/Hg, ${\delta}$ was 28.4/16.9, and m was 2.58/1.53. (6) In the seven ties, M was 139.62/86, 54 mm/Hg, ${\delta}$ was 22.4/15.7, and m was 4.38/3.09. And the range of systolic blood pressure in male was 70~230 mm/Hg and in female was 80-230 mm/Hg. The range of distolic blood pressure in male was 50~160 mm/Hg and in female was 40~140 mm/Hg. 2. The hematocrit value according to sex and age groups was as follows: 1) The hematocrit values of male by age group (1) In the twenties, M was 42.72%, ${\delta}$ was 3.05, and m was 0.30. (2) In the thirties, M was 41.77%, ${\delta}$ was 3.29, and m was 0.28. (3) In the forties, M was 41.39, ${\delta}$ was 3.86, and m was 0.35. (4) In the fifties, M was 40.12%, ${\delta}$ was 3.65, and m was 0.30. (5) In the sixties, M was 39.88%, ${\delta}$ was 3.81. and m was 0.38. (6) In the seventies, M was 38.47%, ${\delta}$ was 2.27, and m was 0.52. 2) The hematocrit values of female by age group (1) In the twenties, M was 35.40%, ${\delta}$ was 3.37, and m was 0.30. (2) In the thirties, M was 35.50%, ${\delta}$ was 3. 35, and m was 0.22. (3) In the forties, M was 35.75%, ${\delta}$ was 3. 18, and m was 0.22. (4) In the fifties, M was 35.84%, ${\delta}$ was 3.30, and m was 0.22. (5) In the sixties, M was 35.70%, ${\delta}$ was 3.35, and m was 0.30. (6) In the seventies, M was 35.08%, ${\delta}$ was 3.08, and m was 0.60. The range of hematocrit values in male was 23~50% and in female was 18~50% (un associated with age groups). 3. In comparison with the blood pressure and the value of hematocrit of study groups showed that the blood pressure raised higher but the value of hematocrit got lowered on the contrary as the groups are getting older. 4. Total number of patients with hypertension was 165(10.6%) which were consisted with 71 male (11.3%) and 94 female (10.1%). But only two cases of the male patient and one case of the female patient were associated with protein uria. 5. The incidence of anemia by hematocrit values was as follows: 1) The incidence of male anemia patients based on$\leqq$41% ($\leqq$39%). (1) In the twenties, incidence was 43.90% (16.98%). (2) In the thirties, 41.48% (25.93%). (3) In the forties, 42.62% (25.41%). (4) In the fifties, 62.76% (40.69%). (5) In the sixties, 70% (38%). (6) In the seventies, 84.21% (73.68%). 2) The incidence of female anemia patients bailed on $\leqq$35% ($\leqq$34%). (1) In the twenties, incidence was 43.90% (37.39%). (2) In the thirties, 48.21 % (33.93%). (3) In the forties, 43.58% (32.57%). (4) In the fifties, 45.91 % (34.09%). (5) In the sixties, 47.11% (37.19%). (6) In the seventies, 50% (46.15%) 6. The incidence rate of anemia patients with hypertension was highest in the age group 51~60 in male and 31~40 in female.

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혼식(混植)한 몇가지 수도품종(水稻品種)의 생육(生育)과 병해발생(病害發生) (The Effect of Mixed Cultivation of Rice Varieties on the Plant Characteristics and the Occurrence of Blast under Various Fertilizer Levels)

  • 이광수;안수봉
    • 농업과학연구
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    • 제14권2호
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    • pp.232-247
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    • 1987
  • 충남(忠南) 지역(地域) 일반계(一般系) 장려품종인 동진(東津)벼, 대청(大晴)벼, 추청(秋晴)벼 3품종(品種)의 혼식재배(混植栽培)가 병해(病害) 및 수량(收量)에 미치는 영향(影響)을 구명(究明)하기 위하여 1987년(年)에 충남대학(忠南大學) 농과대학(農科大學) 시험포(試驗圃)에서 수행(遂行)한 시험결과(試驗結果)를 요약(要約)하면 다음과 같다. 1. 혼식(混植)에 따른 품종(品種) 및 처리간(處理間) 출수기(出穗期) 변화(變化)는 차이(差異)가 없었고 추청(秋晴)벼 보비구(普肥區)에서만 1일(日) 지연(遲延)되었다. 2. 초장(草長)의 혼식효과(混植效果)는 소비구(少肥區)에서 높았으며 혼식조합별(混植組合別)로는 동진(東津)벼와 대청(大晴)벼 혼식조합구(混植組合區)에서 5.1%로 가장 높게 나타났고 경수(莖數)에서는 보비구(普肥區)에서 혼식효과(混植效果)가 나타났으며 혼식조합별(混植組合別)로는 추청(秋晴)벼와 동진(東津)벼의 혼식조합구(混植組合區)에서 단식구(單植區) 평균치(平均値)보다 5.7%가 증가(增加)하여 혼식효과(混植效果)가 가장 높았다. 3. 간장(稈長)은 시비량(施肥量)이 많을수록 혼식효과(混植效果)도 증가(增加)하였으며 동진(東津)벼와 대청(大晴)벼 혼식조합구(混植組合區)에서 간장(稈長)이 가장 길었으며 혼식효과(混植效果)도 높았다. 반대로 수장(穗長)은 시비량(施肥量)이 많을수록 감소(減少)하였으며 혼식효과(混植效果)도 떨어졌다. 혼식조합별(混植組合別)로는 동진(東津)벼와 대청(大晴)벼 혼식조합구(混植組合區)에서 수장(穗長)이 가장 길었으며, 혼식효과(混植效果)도 현저했다. 4. 성숙기(成熟期)의 지상부(地上部) 건물중(乾物重)은 단식구(單植區)에 비해 2품종(品種) 혼식구(混植區)에서 3.5%, 3품종(品種) 혼식구(混植區)에서 8.5% 증가(增加)하였으며 비료수준별(肥料水準別)로는 보비구(普肥區)에서 혼식효과(混植效果)가 현저했다. 5. 목도열병(稻熱病)과 지경(枝莖) 도열병(稻熱病)은 혼식구(混植區)에서 각각(各各) 11.7%, 14.0% 감소(減少)하였으며, 소비구(少肥區)보다는 보비구(普肥區)에서 혼식효과(混植效果)가 현저했으며, 혼식조합별(混植組合別)로는 동진(東津)벼와 대청(大晴)벼 혼식조합구(混植組合區)에서 도열병(稻熱病) 발생(發生)이 가장 적었다. 6. $m^2$당(當) 수수(穗數)는 추청(秋晴)벼와 동진(東津)벼 혼식조합구(混植組合區)에서 혼식효과(混植效果)가 가장 높았으나 수당(穗當) 영화수(穎花數)는 추청(秋晴)벼와 동진(東津)벼 혼식조합구(混植組合區)에서 가장 낮았다. 비료수준별(肥料水準別) 혼식효과(混植效果)는 $m^2$당(當) 수수(穗數)에서 비료수준(肥料水準)이 높을수록, 수당(穗當) 영화수(穎花數)는 비료수준(肥料水準)이 낮을수록 컸다. 7. 등숙율(登熟率)은 비료수준(肥料水準)에 관계(關係)없이 전(全) 혼식조합구(混植組合區)에서 혼식효과(混植效果)가 나타났으며, 1000립중(粒重)은 소비구(少肥區)에서 혼식조합간(混植組合間)에는 추청(秋晴)벼와 동진(東津)벼 혼식조합(混植組合)과 3품종(品種) 혼식조합구(混植組合區)에서 혼식효과(混植效果)가 높았다. 8. 수량(收量)은 단식구(單植區)보다 혼식구(混植區)에서 4.6% 증수(增收)되었으며 특히 소비구(少肥區)에서 증수(增收)가 현저했다. 혼식조합별(混植組合別)로는 추청(秋晴)벼와 동진(東津)벼 혼식조합구(混植組合區)에서 6.8% 증수(增收)되어 혼식효과(混植效果)가 가장 높았다. 9. 수량(收量)은 $m^2$당(當) 수수(穗數)와 건물중(乾物重)에 고도(高度)의 유의차(有意差)가 인정(認定)되었으며 수당(穗當) 영화수(穎花數)와 등숙율(登熟率)과는 유의차(有意差)가 인정(認定)되지 않았다.

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혁명시기 중국공산당의 문서당안관리 (Chinese Communist Party's Management of Records & Archives during the Chinese Revolution Period)

  • 이원규
    • 기록학연구
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    • 제22호
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    • pp.157-199
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    • 2009
  • 중국공산당의 창당과 함께 문서와 당안 관리 조직이 출현한 것은 아니었다. 1926년 중앙 비서처가 설립된 이후 문서과와 그 소속 문건열람처, 문건보관처 등이 설립됨으로써 본격화되었던 것이다. 1930년대 초 비서조직의 업무개선이 집중적으로 논의되었는데, 비판의 핵심은 정치적 역할을 자각하지 못한 채 단순히 "기능적 조직"으로 전락하고 말았다는 것이었고, 이의 해결 방안은 곧 "비서처 업무의 정치화"였다. 나아가 1940년대에는 "정풍운동"의 영향으로 문서만이 아니라 각종 주요 정보자료를 수집하여 정리, 제공하는 재료과의 임무가 강조되었다. 한편, 문서의 작성에 있어서 인물이나 기관의 명칭을 다르게 표기한다든가 약물을 사용하여 문서를 작성하는 등 보안의 유지가 줄곧 강조되었으며, 또한 업무활동과 지역의 상황에 대한 정기보고를 통해 중앙과 지방간의 소통이 강조되었다. 비서장은 중요 공문의 초안을 작성하는 것은 물론, 모든 문건의 열람과 심사를 담당하여 문서처리의 중심적 역할을 수행하였다. 문서의 처리가 끝나면 당안이라고 불리우며 보관되었는데, 중앙 비서처 문서과의 "문건보관처"가 이러한 역할을 담당하였다. "중앙문고"라고 불리기도 한 문건보관처는 1930년대 초부터 더 이상 당안을 이관받을 수 없었지만, 1940년대에는 재료과가 문서와 간행재료를 보존하고 제공하는 역할을 강화해갔다. 특히 조사연구를 위한 재료의 수집이 실행되었고, 일본의 통치 아래에 있던 지역을 회복하면서 대량의 당안과 문헌 자료를 수집하기도 하였다. 1931년 당안의 분류방법과 목록작성방법이 규정된 이후 특히 1940년대에 본격적으로 제도화되었는데, 기본적으로는 주제분류법이 유지되었고 기초적인 목록표기법이 채택되었다. "중요성"과 "기밀성"을 관리의 기준으로 삼는 원칙은 비교적 초기부터 나타났지만, 문서의 보존과 폐기를 구분하는 평가의 개념이나 절차는 명확치 않았다. 비밀의 보안관리와 접근제한의 제도를 실행하는 한편, "보존과 이용의 통일"이라는 구호에서도 알 수 있듯이 당안재료의 이용제공에 대한 문제의식은 매우 강렬하였다. 혁명운동과 전쟁의 와중에서도 중국공산당은 문서당안의 관리와 보존을 강화해가는 노력을 지속했다. 그 성과가 항상 바람직한 것도 아니었고, 그 경험을 안정적으로 발전시켜갈 수 있었던 것도 아니었다. 그것은 필경 중국공산당이 처해 있던 역사적 여건에서는 불가피한 일이었을 것이다. 이 과정에서 두드러지게 나타난 특성은 단지 기능적인 수준에서 문서당안관리의 효율화를 추진했던 것이 아니라 것이 아니라, 오히려 중국공산당의 혁명운동에 미치는 정치적 의의에 대한 자각을 강화해가며, 혁명 정책 연구의 실증적 근거이자 또한 중국공산당 역사의 증거로서 당안재료가 갖는 가치에 주목하였던 것에서 찾을 수 있을 것이다.