입제의 수면처리에 의한 주요수도해충의 동시방제

최승윤,배상희,송유한,Choi Seung Yoon,Bae Sang Hee,Song Yoo Han 한국응용곤충학회 1970 한국식물보호학회지 Vol.9 No.1

본 시험은 유기인계 살충제인 Terracur P입제 및 Lebaycid 입제와 유기염소계 살충제인 상감마입제$(\gamma-BHC 입제)$를 수면시용 하였을때 수도요해충인 이화명충, 끝 동매미충, 애멸구 및 흰둥멸구에 대한 동시방제가능성과 방제적기를 구명하고 약제간의 방제효과를 비교코저 실시하였다. 얻어진 시험결과는 다음과 같다. 1) 약제처리후 부화직후 이화명충 접종 시험에 있어서 상감마와 Terracur P는 높은 살충율을 보였으나 Lebaycid의 살충율은 낮았다. 約 $50\%$ 살충력 잔효일수에 있어서 상감마는 8-14日이었고 Terracur P는 6일간이었다. 2) 당초 계획된 방제적기에 관한 정보는 얻을 수 없었다. 즉 주어진 일간격이 좁아 유의한 차를 얻을 수 없었다. 3) 1,2화기 이화명충에 대한 방제효과는 Terracur P=상감마>Lebaycid의 순이었다. 4) Terracur P와 Lebaycid 입제의 처리는 끝동매미충의 방제효과가 좋았으나 상감마$(\gamma-BHC 입제)$의 방제효과는 기대할 수 없었다. 끝동매미충에 대한 Terracur P와 Lebaycid입제의 잔효력은 30일 이상이었다. 5) 애멸구와 흰등별구에 대한 시험은 충의 서식밀도가 낮기 때문에 약제간 방제효과를 얻을 수 없었다. 6) 공시약제중 Terracur P와 Lebaycidd입제는 이화명충과 끌동매미충의 동시방제제로서 사용할 수 있을 것 같다. This experiment was conducted to find out the simultaneous control effect of granulated insecticides on the several major rice insect pests in Korea. The granulated insecticides used were Terracur P$5\%$ (one of the phosphoric insecticides), Lebaycid $5\%$, and Sang-gamma (gamma-BHC) $6\%$. Those insecticides were broadcasted by hand on the paddy field at the ratio of 3kg. in June and 4kg. in August per 10 a, and the date of insecticidal application was based on the maximum moth occurrence of the rice stem borer in 1969. The rice insect pests tested in this study were rice stem borer (Chilo suppressalis W.), green rice leafhopper (Nephotettix bipunctatus cincticeps U.), smiller brown planthopper (Laodelphax striatellus F.), and white back planthopper (Sogotella furcifera H.). For the study of residual effectiveness of the insecticides, the rice stem borer larvae just hatched from the eggs were installed on the sheath of rice plants collected from the paddy field after insecticidal treatment, and the mortality was made at 48 hours after installation. High mortality was observed in Terracur P and Sang-gamma treatments and low mortality in Lebaycid treatment. The duration of residual effects giving about 50% mortality was about 14 days in Sang-gamma and about 6 days in Terracur P treatments. The study on the effectiveness of the insecticides to the rice stem borer in the paddy field was made by the number of dead blades and white heads of the rice plants injured by the larvae, and the number of survival larvae in the straws after crop harvest. The order of insecticidal effectiveness to the rice stem borer was Terracur P=Sang-gamm>Lebaycid. The study on the effectiveness of the insecticides to the leafhoppers and planthoppers in the paddy field was made by the population density by sweeping (5 times) at the given day intervals after treatments. Terracur P was highly effective for the control of the green rice leafhoppers and Lebaycid was moderately effective, but Sang-gamma seemed not to be effective. The effectiveness of the insecticides tested to the planthoppers was not clear, and it seemed to related with the low insect population density. Study on the determination of proper timing of insecticidal application was not also made clear, and it seemed to be short in the range of day intervals in the insecticidal application. For the study on the control effects of the rice insect pests, rice yield per 100 hills per plot was observed. There was no statistically significant difference among the treatments in rice yields, but the order of yield (Terracur P>Sang-gamma>Lebaycid>Control) was paralleled with the tends of control effects above mentioned. In a view point of simultaneous control of the rice stem borers and green rice leafhoppers by the application of granulated insecticides, Terracur P and Lebaycid were more effective than Sang-gamma which have been used.

초등학생의 건강생활실천정도에 영향을 미치는 사회 경제적 요인

윤희상,정상혁 韓國學校保健學會 2005 韓國學校保健學會誌 Vol.18 No.2

Purpose : This study explores the relationship between the health behavior and knowledge of elementary school students and the socio-economic status of their parents. Methods : A self-administrated quenstionnaire was provided to 238 students and their parents living within Seoul metropolitan area. The questionnaires were administered during December 2003. The relationship betweensocio-economic status, health behavior (19 items) and health knowledge (15 items) were analyzed using correlation, t-test and one-way ANOVA. Multiple regression analyses were also performed in order to investigate the relationship between health behavior and socio-economic status. Results : The results of multiple regression demonstrated that the health behavior of children living in apartments was 2.29 higher (β=2.29) than those not living in apartments. Health behavior scores among students with highly educated mothers were 0.42 higher (β=0.42) than those for students with relatively uneducated mothers. These numbers represent statistically signuificant values. Conclusion : Since health behavior appears to be directly proportional to socio-econmic status ofthe parent, active intervention may be required in order to improve the health behavior of children with poorly educated mothers and who live in independent or multi-household houses.

사출성형된 섬유강화 플라스틱 복합재의 뒤틀림에 관한 연구

윤성운 朝鮮大學校 機械技術硏究所 2000 機械技術硏究 Vol.3 No.2

The injection molded part shrinks in the process of solidification by the amount of the coefficient of linear thermal expansion multiplied by the temperature difference between the room temperature and the temperature at which the solid structure is formed in the mold. And it is called warpage for this type of deformation that shrinkage are not uniform throughout the injection molded part. To predict warpage phenomena in the articles, the results obtained theoretically from the change of mold temperature, fiber content of composites have been compared with experimental results.

물-에탄올 및 물-아세톤 혼합용액속에서 2-염화푸로일의 가용매 분해반응

윤상기,손진언 東亞大學校 大學院 1978 大學院論文集 Vol.2 No.-

The rates of solvlysis for 2-furoyl chloride have been measured in aqueous acetone and aqueous ethanol at various temperatures from 20 to 40℃. The solvent effect and mechanism have been discussed in terms of variation in solvent composition and activation parameters. The results indicated that the reaction rates of solvolysis are considerably slower than those of the reaction for benzoyl chloride. The results also showed that the reacthion proceed with the SN2 mechanism whereas bond-breaking increased with the increase of water content and over all reaction in subject to entropy control.

tert-Butyl alcohol-물 混合溶媒系에 대한 n-Alkylamine 염산염의 電導度에 관한 硏究

尹庠基,朴鍾烈 東亞大學校 大學院 1977 大學院論文集 Vol.1 No.-

3級 bytyl alcohol-물 混合溶媒中에서 CH3NH3Cl, EtNH3Cl, n-PrNH3Cl 및 n-BuNH3Cl의 네가지 同族體 amine 鹽의 당량전도도(Λ)를 25℃에서 測定하고 Fuoss-Onsager의 羊理論式으로서 여러가지 전도도 parameter를 구하였다. 0.1 mole fraction(m.f.)에서 0.8 m.f.에 이르는 여러가지 組成의 混合溶媒系에서 공통적으로 amine염의 濃度增加에 따라 Λ는 減少하고 Λvs. ?plot는 거의 直線性을 보였다. 또한 溶媒조성에 따른 극한당량전도도 (Λ.)는 cosolvent t-buOH의 농도증가에 따라 즉 m.f.가 커짐에 따라 줄어 드는데 그 줄어드는 幅이 cosolvent의 농도가 묽은쪽, 즉, 물에 가까울수록 크고 특히 0.1 m.f.에서 特異하게 큰 감소를 보였다. 한편 0.8m.f.부근에서는 Λ.가 극히 적은 값으로 관측되었다. 이러한 현상들은 혼합용매계의 유전상수(ε), 용매구조와 밀접한 관계가 있는 것으로 논의되었다. 실험결과는 같은 시료로서 methanol-물, 2-propanol-물 혼합계에서 관측한 결과와 많은 유사점과 차이점이 나타났고 이러한 점에 대하여 비교 검토 하였다. Conductance measurements are reported for the homologous series of MeNH3Cl, EtNH3Cl, n-PrNH3Cl and n-BuN3HCl in various t-butyl alcohol and water mixtures for the range from 0.1 m.f. to 0.8 m.f. at 25℃ and conductance parameters are determined by means of Fuoss-Onsager's semiempirical equation. Equivalent conductances(Λ) are decreased with the increasing of the salts concentration for all salts species while the plot of Λ vs. ? showed nearly linearity. The limiting equivalent conductances(Λ.) are also decreased with the increasing of the concentration of cosolvent i.e. m.f. of t-butyl alcohol and anomalously large decrement in Λ. as increasing m.f. cosolvent nearly for 0.1 m.f., on the other hand significantly small decrements are showed near for 0.8 m.f. solvent. These behaviors are interpreted in terms of the change of dielectric constant and structural effect for binary mixtures. Considerable similarities or differences are found through the results of present work in comparision with those of the results for water mixtures of methanol and 2-propanol with the same salts.

고양이 위 평활근에서 KCI에 의한 근수축에 대한 Protein Kinase의 조절

심상수,김승록,심혜선,이덕주,한상준,윤신희,조양혁,김명석 大韓消化器病學會 1998 大韓消化器病學會誌 Vol.32 No.3

폐색전증

윤성호 朝鮮大學校 附設 醫學硏究所 2009 The Medical Journal of Chosun University Vol.33 No.S

불소바니쉬가 법랑질 탈회에 미치는 영향

윤명옥,이난영,이상호 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.3

이 연구의 목적은 법랑질 탈회부위에 불소 바니쉬 적용의 효과를 평가하는 것이다. 80개의 소의 법랑질 블록을 무작위로 4군으로 나누었다. 1군은 대조군으로 바니쉬 적용을 하지 않았다. 2군은 APF gel을 도포하고 4분후에 세척하였다. 3군과 4군은 Fluor Protector^(ⓡ)와 CavityShield™를 도포하고 1분 후에 세척하였다. 모든 표본을 인공우식용액 속에 넣어서 탈회시켰다. 가시광선 형광을 이용해 병소의 광밀도를 측정하고 병소의 깊이를 현미경으로 측정하고 통계적으로 비교하였다. 1. 48시간 후 광밀도 측정시 2군 광밀도는 대조군에 비해서 높았으나 바니쉬군보다 낮았고,두 가지 바니쉬 간에 유의한 차이는 없었다. 2. 72시간 후 광밀도 측정결과 3군에서만 약간의 광밀도 감소가 관찰되고,4군이 가장높았다. 3. 72시간의 탈회 후 병소의 깊이를 측정한 결과 대조군에서는 평균 205.36±42.85㎛, 2군에서 병소의 평균깊이는 21O.81±44.60㎛로 두 군간에 유의한 차이는 없었다. 4. 불소 바니쉬군의 병소 깊이는 3군이 80.03±21.66㎛, 4군이 77.46±27.72㎛로 대조군이나 2군에 비해 탈회가 억제되었음을 알 수 있었으나 두 가지 바니쉬 사이에 차이가 없었다. The aim of this study was to evaluate the effect of fluoride varnish application on enamel decalcification. Eighty bovine enamel blocks divided randomly into 4 groups. Group I is the control group. Group II was treated with the APF gel and washed after 4 minutes. Group III and IV was treated with Fluor Protector^(ⓡ) and CavityShield™ and washed after 1 minutes. Decalcification were created by placing all specimen into artificial acidic solution(pH4.0). Then the optical density of the lesions were measured by visible light fluorescence and the lesion depths were measured. The results were : 1. The optical density of group II was higher than group I but lower than group III, IV(p<0.05) and there was no difference between group III, IV(p>0.05) at 48 hours. 2. The optical density of group IV was highest at 72 hours(p<0.05). 3. Mean lesion depths were 205.36±42.85㎛ and 210.81±44.60㎛ in group I, II but no significant difference between two groups(p>0.05). 4. Mean lesion depths were 80.03±21.66㎛ and 77.46±27.72㎛ in group III, IV but no significant difference between two groups(p>0.05). Fluoride varnish treatment resulted in a significant reduction in lesion depth compared with APF gel. Fluor Protector^(?) and CavityShield™ provided the similar effect.

스쿠버다이빙 참여활동에 따른 소비자 만족도에 관한 연구

윤상문 한국스포츠리서치 2005 한국 스포츠 리서치 Vol.16 No.2

The purpose of this study was to investigate differences in customer satisfaction based on the pattern of scuba diving participation in order to provide the important data for developing effective marketing strategies. The subjects for this study consisted of 843 female and male customers from scuba diving resorts and scuba diving pro shops located in the Republic of Korea. The statistical analyses were performed by using the SPSS 10.1 software. The statistical techniques used for analysis were factor analysis, reliability analysis, frequency, One-way ANOVA, and Scheffe's post hoc test. Statistical significance was accepted at an alpha level of p<.05. The major findings of this study were as follows: 1. Based on the pattern of scuba diving participation, social satisfaction and physical satisfaction were very high with four times a week, followed by one to three times a week, and two to three times a month. Psychological satisfaction was the highest with one to three times a week, and followed by four times a week, and two to three times a month. Satisfaction with facilities was the highest with four times a week, followed by one to three times a week, and less than two times a month. 2. Based on scuba diving experience, social satisfaction was the highest with more than 11 years of experience, followed by less then three years of experience and seven to 11 years of experience. There were no statistical differences in psychological satisfaction and satisfaction with facilities based on scuba diving experience. 3. Based on scuba diving skill levels, social satisfaction and psychological satisfaction were the highest with people with advanced skills, followed by intermediate skills, and beginners. Physical satisfaction was the highest with advanced skills, followed by beginners, and intermediate skills. There were no statistical differences in facilities satisfaction with facilities based on scuba diving skill levels. 4. Based on a companion who a scuba diving customer goes with. social satisfaction was the highest with colleagues. friends. and alumni. followed by an instructor and club members. Psychological satisfaction and satisfaction with facilities were the highest with colleagues, friends, and alumni, followed by an instructor and family members.

현장 콘크리트의 압축강도 관리를 위한 강도추정식 개발에 관한 연구

윤상천 경주대학교 건설환경연구소 2002 建設環境論叢 Vol.- No.4

There are only a few tests to ensure concrete quality before placing at construction site; One is slump test for workability, the other is air content test for durability. The concrete compressive strength is the one of important factors to influence on concrete quality, and can be evaluated at the 28 days after placing. Some methods on the prediction of concrete strength at early age have been introduced for concrete quality management, but such methods are time consuming, and required special expertise. The purpose of this study is to suggest the equation for 28-day concrete compressive strength prediction to control quality control of ready mixed concrete, and the multiple regression analysis was conducted between concrete constituents and compressive strengths on basis of data acquired at the construction site.