피크린산의 흡착특성

정봉수(Bong Su Cheong),정재관(Jay Gwan G . Chung) 한국공업화학회 2000 공업화학 Vol.11 No.6

N/A

Population viability analysis to estimate the needed number of capture-and-remove wild boars for control of African swine fever in the Republic of Korea

조희경(Hee-Kyeung Cho),정봉수(Bong-Su Jung),정충식(Chung-Sik Jung),박선일(Son-Il Pak),김으뜸(Eu-Tteum Kim) 한국예방수의학회 2020 예방수의학회지 Vol.44 No.4

Since the first detection of the African swine fever (ASF) virus in the Republic of Korea in 2019, the Korean government has applied interventions, including fencing, increasing the biosecurity level at domestic pig farms, and the capture-and-removal of wild boars. In particular, wild boars are an important risk factor for ASF control because they can spread disease among susceptible animals, such as wild boars or domestic pigs. A capture-and-removal method aims to reduce the likelihood of ASF transmission from wild boars to domestic boars or among wild boars by decreasing the number of susceptible wild boars. This study estimated the required number of wild boars captured and removed for ASF control using population viability analysis. Population factors, such as a life span, sex ratio, or an inbreeding depression with different capture-and-removal proportions of wild boars, were included in the analysis. Ten scenarios with different capture-and-removal proportions of wild boars and different periods of culling were considered. According to the results, a method in which 75% of wild boars are captured-and-removed for at least three years showed long-term effectiveness for more than ten years. The current ASF control method, in which 33% of wild boars are captured-and-removed, decreased the number of wild boars for three years, after which the wild boar population increased to more than its initial number. Given the limited human and material resources for controlling ASF in the Republic of Korea, it is recommended that resources be prioritized to increase the capture-and-removal proportion of wild boars to take full advantage of the ASF-control effectiveness.

항산화 필터 제조 및 주류연중 free radicals 제거 효과

김수호,차성제,심원택,정봉수,서만석,송인범,장행현,신창호,김종열,김정열,최윤주,Kim, Soo-Ho,Cha, Sung-Je,Shim, Weon-Tack,Cheong, Bong-Su,Seo, Man-Seok,Song, In-Beom,Jang, Hang-Hyun,Shin, Chang-Ho,Kim, Jong-Yeol,Kim, Chung-Ryul,Choi, Yoo 한국연초학회 2009 한국연초학회지 Vol.31 No.1

This study describes the manufacturing method of antioxidant filter and evaluate the reduction of free radical and biological activity from mainstream smoke. When we used spray-brush for the application of antioxidant solution to the filter, cv(coefficient of variation) levels of antioxidant added to filter ranged within 3 %, which means stable and constant feeding process. 0.3~0.5mg per cigarette of antioxidant were sprayed to acetate and active carbon part in the filter plug, respectively. It was considered that the use of antioxidant added filter resulted in the reduction of the gaseous compounds of free radicals from 17 % to 19 % in the mainstream smoke. Variation for removal efficiency of free radical in antioxidant filter added to acetate part was more pronounced than that of filter added to active carbon part. Smoking deliveries of tar, nicotine for the antioxidant added filters were similar when comparing to the non-antioxidant added filter, but the delivering amounts of isoprene were significantly reduced. The estimation of consumed GSH(glutathion) showed that the gaseous toxicity of the antioxidant added filter was 14 % ~ 23 % lower than that of non-antioxidant added filter. No significant differences were observed for the total taste quality in sensory evaluation.

효소면역법을 이용한 Brucella abortus 항체 검출에 관한 연구

심항섭 ( Hang Sub Shim ),국정희 ( Jung Hee Kook ),정봉수 ( Bong Su Chung ),고태오 ( Tae Oh Ko ),조중현 ( Jung Hyun Cho ),박유순 ( Yu Soon Park ) 한국가축위생학회 1998 韓國家畜衛生學會誌 Vol.21 No.2

In order to establish a rapid, sensitive and specific diagnostic method for detection of antibody to Brucella abortus, a enzyme-linked immunosorbent assay(ELISA) was adapted. The diagnostic efficacy of the established ELISA was compared with that of the standard tube agglutination test for B abortus. 1. It was found that the optimal concentration of antigen for this ELISA was 51ug/m1, the optimal dilution of conjugate was 1:2000, and the optimal dilution of serum was 1:200, respectively. 2. Cut off value in this ELISA was 1,102 that was determined by mean absorbance(at 492nm) of tube agglutination test negative serum added with the triple value of the standared devation. 3. The relationship between the tube agglutination test and ELISA was showen high corresponding rate with sensitivity(96.3%) and specificity(98.1%). 4. The efficacy of the ELISA for detection of B abortus antibody was compared with tube agglutination test in brucellosis outbreak farm. The sensivity of ELSIA was higher than tube agglutination test.

Speed SPrayer의 藥劑撒布에 關한 試驗

鄭鳳守,李永日 진주산업대학교 1975 論文集 Vol.13 No.-

Swath spray의 노즐의 種類別 藥劑撒布試驗結果를 보면 다음과 같다. ① 農藥撒布는 가능하면 無風時에 行하여야 하며 不可避한 겨우 最小 風向角 30°미만으로 維待해야한다. ② 作業能率에 있어서 動力噴霧機는 人力噴霧機에 比해 약 10倍 미스트機는 4倍의 能率이 높다. ③ 유효살포거리는 4頭口 노즐이 9∼12m 2頭口 노즐이 14∼16m 1頭口 노즐이 16∼19m로서 단변 30m인 논에서는 畦件撒布가 可能하다. The results about the experiments of the chemica1 spray and the numbers of the nozzle 1. It must let you spray dowon-wind, but if heavy-wind exists you must set the sprayer are as follows to keep below the angle of 30 degrees of the direction of the wind. 2. In the ability of spray the power-sprayers work about 10 times than hand-sprayers do and the mist sprayers to 4 times than they do. 3. In the available distance of spraying on the roadside and fence-row, you set the sprayer to keep four nozz1es once from 9 to 12 m width coverage, two nozzles once from 14 to m and one nozzle once from 16 to 19 m. so, it is availlable to spray in case of 30 m with of the paddy field.

태아 부신 겉질에서 태아구역의 미세구조

정봉수,임인석,김성수,김경용,이원복 중앙대학교 의과대학 의과학연구소 2000 中央醫大誌 Vol.25 No.1

The ultrstructuraldevelopment of fetal zone was investigated in human fetal gland using transmission electron microscopy. The results abstained were as follows. 1. In 11 and 12 weeks of gestion, fetal adrenal cortex was able to be divided morphologically into thick inner, thin outer,and transitional zones between the former two. The adrenocortical cells in fetal zone exhibited various electron densities of dark and light cells, and gradual differentiation states from inner to outer zones. 2. The dark cells were divided into two types in according to the electron density. Type 1 dark cell was of higher electron density and composed of relatively closely packed agranular endoplasmic reticulum. Type 2 dark cell showed lower electron density, contained irregular electron dense inclusion bodies, and were composed of slightly dilated, loosely packed agranular encoplasmic reticulum than type 1 cell. 3. Light cells were composed of lower electron density than dark cells, but well developed Golgi complexes were often assdciated with dense irregular inclusion bodies. 4. Type 2 dark cells anf light cells contained mitochondria with elestron dense materials in it. In summary, the fetal zone in human fetal adrenal cortex exhibited the cells not observed in adults, the significance of which has been questioned. On the basis of morphology that the cells were similar to the cells secreting steroid hormone, these cells in fetal zone are likely to play a role in the production of steroid hormone during fetal life.

감기치료후 방광의 Hutch`s Diverticulum 수술을 위한 전신마취중 발생한 심한 과탄산 혈증

정봉수,임선아,강평희 대한마취과학회 1998 Korean Journal of Anesthesiology Vol.35 No.2

The surgical and anesthetic management for giant cerebral aneurysm is difficult because of their great size or lack of an anatomic neck. Recently, total circulatory arrest, profound hypothermia using cardiopulmonary bypass and the cerebral protection of barbiturate are able to manage the difficult cerebral aneurysm operation due to the ease of the surgical approach and the decreased post operative neurological injury. These techniques were successfully utilized in the patient of the diamerer-3 cm sized giant cerebral aneurysm located at the bifurcation between the right internal carotid artery and the anterior cerebral artery, and the surgical and anesthetic considerations are reviewed. (Korean J Anesthesiol 1998; 35: 767∼771)

엔진회전계의 전달함수 산정을 위한 개루우프(Open loop) 시험

鄭泰相,鄭鳳守,金明奎 진주산업대학교 농업기술연구소 1993 農業技術硏究所報 Vol.6 No.-

농용엔진이 부하변동에도 일정한 회전수를 유지할 수 있는 제어기법을 개발코자, 개루우프 시험에 의해 회전계의 동특성을 이용하여, 통계적으로 산출하여 엔진회전계 방정식을 정리하였으며, 그 결과는 아래와 같다. 1. 엔진회전계의 전달함수와 이산시계열 방정식을 이론과 실험결과를 이용하여 정립하였다. 2. 실제 엔진회전수와 전달함수를 이용한 추정회전수가 일치하였다. This research was carried out to find out a revolution equation of the engine system using regression analysis. The dynamic characteristics of revolution part of an engine were measured by open loop test. Thus, a transfer function and a discrete-time equation relating the engine speed as ouput of the control system to the torque equivalant to throttle opening angle as imput of the control system were derived from the results of the open loop test. 1. The transfer function and the discrete time equation of the revolution system of the engine were derived from the control theory and experimental results. The calculated and measured engine speed were in good agreement.

營農 機械化 作業體系에 關한 調査 硏究

鄭鳳守 진주산업대학교 1977 論文集 Vol.15 No.-

This study was carried out to determine the status of farm machanization which could solue the shortage of farm labour power, and the conventional the medium size mechanizing work to set up the farm mechanization and the work system The results obtained were as follows 1. The amount of various farm machineries were increased rapidly last 10 years(65-75) i.e. power tiller 60 times, farm tractors 28 times, and power sprayers 11 times. 2. The farm working hours were greatly dereased about 34.2% between 2.802 hours per hec, in 1965 and 1844.5 hours per hec, in 1975. The shortage of agricultural labour power according to this decreasing transition could been solved by the supply of main farm machineries. 3. In case of ricefarming, 1,293.7 hours were meeded by the conventional farming, 644.3-748.3 hours by the use of medium size farm machineries, and 255.3-290 hours by the use of large size farm machineries. 4. Generally speaking many working hours were needed in transplanting, havesting, thrashing and preventing works, In the transplanting work, 255.1 hours were needed by the conventional farming, 35∼43 hours i.e, shortness 212-220 hours (6 to 7 times) by use of medium size farm machineries, and 20-26 hours i.e. shortened 229-235 hours (10 to 13 times) by the use of large size farm machineries.

動力耘耕機의 土性別 含水率에 따른 碎土率과 土壤附着量이 作業能率에 미치는 影響에 關한 硏究

鄭鳳守 진주산업대학교 1976 論文集 Vol.14 No.-

8ps 動力 경운기를 利用한 토성별 주행 速度別 碎土率과 刈稻株의 매몰율 및 토성과 토양 水分含水率의 變化에 따른 토양 附着量과 경운 碎土能率 試驗을 晉州農專 試驗圃 및 晉州市 草田洞에서 實施한바 다음바 같은 결과를 얻었다. 1. 土性別 碎土率은 주행속도가 0.36m/sec일때 2cm以下의 土塊가 壤土에서는 55.9%이고, 양토에서는 42.7%이며, 埴土에서는 33.7%로 떨어졌음은 砂質土일수록 砂土率은 높아지며 주행속도가 0.53m/sec일 때는 2cm以下의 土塊가 43.3%이고, 양토에서는 36.8%이며 埴土에서는 26.4%이었다. 그러므로 주행속도와 碎土率은 反比例하는 현상이 나타났다. 2. 刈稻株 매몰율은 平均 72珠中 매몰주가 26.3주인 36.4%로 낮은 反轉率을 보였다. 3. 土性別 토양 附着率은 含水率 17.2%에서 砂壤土가 1,399kg 埴土가 2,404kg으로 나타났고, 埴土의, 水分 含水量이 8.9%에서는 5,714kg이며, 21.7%에서는 11,984kg으로 附着率이 顯著하게 增加된 것을 보면 粘土質이 많은 土壤일수록 附着率이 크졌으며, 碎土 效果를 높이기 위해서는 土壤水分 含水率이 20%以下 일 때 作業하는 것이 좋다. 4. 프라우 耕耘 로우터리 碎土의 경우는 주행속도를 공히 0.8m/sec로 하였을 때 作業時間이 165分인데 比하여 로우터리 耕耘 로우터리 碎土의 경우는 주행속도를 名各 0.53m/sec 0.8m/sec로 하였을 때 作業時間이 115分으로서 前者에 比하여 後者의 경우는 54分의 作業時間을 短縮시킬 수가 있었다. This study was carried out to investiage the harrowing performances of 8-Hp's power tiller deperding on soil properties, soil moisrure contents, and working speed. The fineness of wark done, the ratio of soil turned down and the amount of soil lump attached to the harrow were taken as the rule of observing the performances. The fineness of work done was measured by weight percentage of each siyed soil lumps which were classified less than 2㎝, 2-4㎝, and above 4㎝ in diameter. The ratis of soil tutned down was estimated by observing the paddy stocks in the field, and was calculated by dividing number of buried paddy stocks in unit area by number of paddy stocks originated before harrowing. The amount of soil lumps attached to the harrow was weighted. In addition, the performance of “harrowing after tilling" method and that of “harrowing after harrowing" method was compared with each other in order to find out efficient land preparing method by the tiller. All the study was performed in the outskirts of Jinju-city. the southern area of Korea. The results are as follows; 1. The fineness of work done referenced in percentage of soil lumps sized less than 2cm in diameter was 55.9 percent in sandy loam, 42.7 percent in clayey loam, and 33.7 percent in clay with working speed of 0.36 meters per second, and with working speed of 0.53 meters per second was 43.3 percent in sandy loam, 36.8 per c1ayey loam, and 26.4per cent in clay. Thus, it could be concluded that the faster working, speed is and the more clay is contained in soil, the worse the fineness of work done become. 2. The average ratio of soil turned down of above tests showed poor results as 36.4 per cent. 3. The amount of soil lumps attached to the harrow with soil moisture contents of 17.2 percent was 1,399 kilo-grams in sandy loam and 2,404 kil-grams in clay. And in the condition of soil moisture contents varriedin clay, the amouut of soil lumps was 5,714 and 11,984 kilo-grams respect to soil moisture contents of 18.9 and 21.7 percent. The results showed that the amount of soil lumps attached to the harrow increased as the cmnposition ratio of clay in a certain soil increased and increased much more by the effect of soil moisture contents. Therefore it is recommended to pereform harrowing in the soil condition of less than 2O percent. 4. Average time requiremeuts for 1O ares of land preparation by the method of “harrowing after tilling" with working speed of 0.8 meters per second were 165 minutes. And by the method of "harrowing and harrowing" with working speed of 0.5 and 0.8 meters per second, respective1y, time requirements for 1O ares were 111 minutes. Therefore the latter method is recommended for land preparation by the tiller.