소각로 Wetted Scrubber 설계를 위한 단일 Wire 흡수액 유동 흐름막 형성 연구

백영수(Young-Soo Paek),유인수(In-soo Ryu),이승재(Seung-jae Lee),문승현(Seung-hyun Moon),장동순(Dong-Soon Jang) 한국에너지기후변화학회 2010 에너지기후변화학회지 Vol.5 No.1

To design a novel, wetted scrubber system for waste incineration gas treatment, the formation characteristics of thin film down on a wire flow is investigated by absorption experiment. Further numerical calculation is made for the formation of thin film by gravity along the wire to assist in the experiment result. Based on calculation of the liquid film analysis, 3 ㎜ wire is the most adequate for the scrubber that its film thickness is less and retention time of fluid is longer. To verify the result of analysis, it is made an experiment on one wire flow with liquid film thickness, retention time, area of absorption and the volume of fluid. The design parameters of lab-scale scrubber are derived from the one wire flow experiment as 3 ㎜ diameter wire and 3.3 ㎜ hole of solvent reservoir. Liquid film thickness is thinner, amount of fluid is less, time of fluid retention is longer and the area of CO₂ absorption is bigger with 3 ㎜ wire and 3.3 ㎜ hole than any other. Therefore, we decided 3 ㎜ wire and 3.3 ㎜ hole is the most appropriate to lab-scale scrubber.

스포츠 의학 : 대학 농구선수의 스포츠 손상에 관한 임상적 분석

백영수(YoungSooBaek),김종호(JongHoKim),한상철(SangChulHan) 한국체육학회 1996 한국체육학회지 Vol.35 No.3

The purpose of this study was to investigate the injury patterns in collegiate basketball players, and provide the basic data useful for coaches to reduce the injury occurance.Medical records of 113 injured athletes from 12 teams of Division I were collected and analyzed.Ankle was the mast common injury sit, 46%, followed by lower back and knee. Injury incidence occured most frequently during the training season, followed by after game, and during practice.Attention is drawn to the fact that tuesday was at the great risk during a week.Spring was the most season, followed by winter, summer, and fall a year. The injury rate with guard was the highest, followed by ford, and center. The majority of injuries, 93.5% were treated for less than two weeks. For the treatment of minor injuries, Chinese medicine was preferred by athletes.Attention and careful adjustment of training schedule considering the frequently injury-related sit, day of the week and season are emphasized.

비만의 정도가 자각적 부담척도에서의 심박수 반응 특성

백영수(BaekYoung-Soo),정태진(JungTai-Jin) 한국체육학회 2000 한국체육학회지 Vol.39 No.1

비만의 정도가 운동부하에 대한 심리ㆍ생리적 요인에 미치는 정도의 차이를 Borg의 RPE 척도는 다양한 신체적 특성이나 남녀, 질환의 유무, 그리고 나이에 관계없이 다양하게 적용될 수가 있어서 그 효용의 가치는 매우 넓다. 피검자는 C지역道에 재학중인 남자 중학교 1~3학년으로 학교에서 체육수업 이외에는 특별히 신체훈련을 하지않는 총 42명으로 임의선정하였다. 비만의 정도를 나타내는 body mass index(이하;BMI)에 의해 BMI가 20 이하인 자를 저체중자(underweight), 그리고 BMI가 25.1 이상인 자를 과체중자(overweight)로 분류하였다.본 연구자는 운동부하시에 비만의 정도가 Borg며의 15등급 척도 가운데 13점 척도와 15점 척도에서 나타나는 심박수의 특성을 이해함으로써 자각적 부담도를 이용한 청소년(13~15세)의 운동처방시의 기초 자료를 제공하고자 함에 본 연구의 목적을 두었으며, 그 결과 다음과 같다.1) 저체중자와 과체중자의 신장은 각각 167.0±4.79cm와 168.3±5.39cm로, 통계적으로 두 집단간에 차이가 없는 것으로 나타났다.2) 체중은 저체중자가 51.8±4.11kg, & 과체중자는 76.9±7.24kg이었으며, 비만도 지수인 BMI는 저체중자가 18.46±0.62, 과체중자는 27.12±1.76이었다. 그리고 이들의 예측최대심박수는 각각 저체중 자가 206.3 ±0.85bpm, 205.5 ±0.51bpm이였다.3) 자각적 부담척도 13“약간 힘들다”에 대한 과체중자와 저체중자의 심박수는 각각 140.1±7.22bpm과 160.4±5.22bpm에 상응하였고, 이들의 예측최대심박수에서 보면 각각 약 68%HRmax와 약 78%HRmax 수준이었다. 그리고 본 실험에 의하면 BMI 값이 1 증가할수록 심박수는 약2.35beats 증가하며, 두 집단간에는 자각적 부담척도 13에 대한 심박수에 통계적으로 매우 의의있는 차이를 보였다.4) 자각적 부담척도 15“힘들다”에 대한 과체중자와 저체중자의 심박수는 각각 159.0±5.25bpm과 176.0±4.13bpm으로 이들의 예측최대심박수에서 보면 각각 약 77%HRmax와 약 85%HRmax 수준이었다. 그리고 본 실험에 의하면 BMI 값이 1 증가할수록 심박수는 약 1.96bpm 증가하며, 두 집단간에는 자각적 부담척도 15에 대한 심박수에 통계적으로 매우 의의있는 차이를 보였다.이상을 요약해 보면, 비록 신장이 같은 수준에 있더라도 과잉의 체중은 불활성 무게로 작용하게 되어 심폐지구력이 요구되는 운동에서는 인체에 그 부담도를 가중하는 것으로 볼 수 있다. 그리고 자각적 부담도가 13에서 15 사이에서는 같은 부하에서 반응하는 심박수는 BMI가 1 증가할수록 평균 약 2beat씩 증가하기 때문에 과체중자를 대상으로 한 운동처방시의 부하강도는 정상적인 BMI 수준인 25를 넘는 자에게 정상 체중을 가진 자와 동일한 부하강도로 설정하게 되면 심혈관 기능에 과부담을 줄 가능성이 높기 때문에 과체중자를 대상으로 한 지구력 운동을 처방할 때에는 체중을 고려한 부하강도 설정이 요구된다. The purpose of this study was to investigate the character of the heart rate in the obesity classification, using the 15 point Borg’s scale, a perceived exertion rating of 13 to 15.In a group of 21 healty junior high school male subject, referred to as the body mass index(BMI), BMI=weigh1/height2(kg/m2), when the BMI is used, underweight is defined as a value of 20 or less, overweight as a value between 25.1 and 30.0. The results are following.The heart rate of the overweight and underweight group in Borg’s 13 point scale(somewhat hard) was 140.1±7.22bpm and 160.4±5.22bpm,respectively. In the heart rate in Borg's 13 point scale, overweight group showed significant difference lower than underweight group.The heart rate of the overweight and underweight group in Borg's 15 point scale(hard) was 159.0±5.25bpm and 176.0±4.13bpm, respectively.In the heart rate in Borg’s 15 point scale, overweight group showed significant difference lower than underweight group.Even though a height is at the same level, physical stress will be aggravated by acting overweight as dead weight at physical exercises.In addition, it is founded that the number of heart rate in rating increases by two beat each on the average when BMI increases by about one each in rating of perceived exertion scale between 13 and 15 point.

기선권현망 현용 어구의 전개 성능

안영수,백영수,진송한,장충식,강명희,차봉진,김보연,차주형,조윤형 한국수산해양기술학회 2018 수산해양기술연구 Vol.54 No.1

This study was conducted in order to improve fishing gear for existent net of the anchovy boat seine. Field experiments were performed to observe geometry of nets by catcher boats. When the distances between the two ships were 100, 300, and 500 m, and the speeds of towing nets were 0.6, 0.9, and 1.2 k't, respectively. The vertical opening and actual opening of each part of the existent net was as follows: the middle part of the wing net, 12.9-26.6 m, 19-39%; the entrance of the inside wing net, 23.3-35.3 m, 40-60%; the square and bosom, 18.4-24.2 m, 37-49%; the entrance of the bag net, 19.0-23.3 m, 79-96%; the flapper, 13.2-15.3 m, 142-161%; and the end of the bag net, 13.2-15.7 m, 51-61%. The actual net opening of each part of the existent nets used in this study was lower than that of the design net height, due to the low net height of the wing net and the inside wing net, it limited a range of the net height of the square and bosom. The opening of the entrance of the bag net caused the net pocket shape and inflated some parts of the nets. The tension of towing nets was measured between 4.4 and 11.0 tons, and it is necessary to reduce the structure and improve the structure of the bag net. 기선권현망어업에서 사용 중인 현용어구의 전개성능을 파악하는 데에 목적으로 두고 실선 해상실험을 행하였으며, 그 결과는 다음과 같다. 현용어구의 어구 형상을 측정한 결과, 오비기 중간, 수비 입구, 앞창, 자루그물 입구, 깔때기, 자루그물 뒤끝의 망고 변화폭과 실제 전개율은 각각 12.9~26.6, 23.3~35.3, 18.4~24.3, 19.0~23.3, 13.5~15.3, 13.2~15.7 m와 19~39, 40~60, 37~49, 79~96, 142~161, 51~61%로 나타났다. 현용어구는 어구 각부의 실제 전개율이 설계상의 망고에 비해 낮게 형성되었으며, 오비기, 수비의 낮은 망고로 인해 앞창과 문턱, 자루그물 입구의 망고가 전개될 수 있는 한계가 정해지면서 그물코의 움살 및 포켓형상이 부분적으로 발생되고 있다. 어구의 예망장력은 4,552∼11,006 kg으로 나타났으며, 예망 중 어구 저항이 자루그물에 집중되어 있으므로 자루그물 뒤끝의 축소를 통하여 물 빠짐 개선, 유체저항 감소, 자루그물 양망과정 중 어로작업 인원의 조업안전성 향상을 이룰 수 있도록 개선함이 필요하다.

底力을 간직한 사람들

白榮洙 한국마케팅연구원 1974 마케팅 Vol.8 No.5

PMIS(Project Management Imformation System)을 활용한 현장관리

백영수,Baek, Yeong-Su 한국전산구조공학회 2020 전산구조공학 Vol.33 No.4

나선진동 분말식품 건조기의 개발 및 건조특성

백영수,나은수,정은영,장동순 한국산업식품공학회 2003 산업 식품공학 Vol.7 No.4

The spiral vibration heat exchange dryer moves, dries continuously and mixes uniformly particles on the spiral heating plate. So this system is adequate to dry the powder-type food materials. The mass and heat balance equation is used to design dry capacity and water content measurement, sieve analysis and vibration moving test are practiced to lay out the spiral plate. Spiral vibration dryer(300 kg/hr) is manufactured and tested by Dashida powder of 4.8% water content at 80~85oC. The frequency of vibration motor is operated 45Hz, 55Hz, 60Hz and the product mass per time is measured by digital scale. The water content of product is 1.0~1.6% and the dry efficiency is 67.4~78.2%. The spiral vibration heat exchange dryer make 125~363 kg/hr of Dashida dehydrated with temperature consistency and without dust in case.

선단 축소를 위한 기선권현망 축소형 대형 어구의 전개 성능

안영수,백영수,진송한,장충식,강명희,차봉진,조윤형,김보연,차주형 한국수산해양기술학회 2018 수산해양기술연구 Vol.54 No.1

This study was conducted in order to improve opening efficiency of the miniaturized large-scale net for anchovy boat seine gear to reduce the fleet size. Field experiments were performed to observe geometry of nets by catcher boats. When the distances between the two ships were 150, 300 and 450 m, and the speeds of towing nets were 0.6, 0.9, and 1.2 k't, respectively. The vertical opening and actual opening of each part of the miniaturized large-scale net was as follows: the front part of the wing net, 8.7-13.3 m, 51-78%; the middle part of the wing net, 28.1-34.2 m, 55-67%; the entrance of the inside wing net, 31.3-38.5 m, 60-73%; the square and bosom, 22.7-29.6 m, 47-62%; the entrance of the body net, 20.9-26.4 m, 42-52%; the entrance of the bag net, 17.2-21 m, 72-89%; the flapper, 13.2-15.3 m, 78-83%; and the end of the bag net, 13.2-15.7 m, 72-75%. By connecting the net pendants with the front part of the wing net, the opening of the front part of the wing net was significantly improved compared to the traditional gear, which ensured both the wing net and the inside wing net with a normal net height. This, in turn, increased the efficiency of herding. The height of the body and bag nets was also higher than that of the tradition gear. In particular, the body net attached to the gear significantly improved the pocket shape of the gear and reduced the number of fish that were caught and escaped from the bag net, which increased the rate of fishing. The tension of towing nets was measured approximately between 2,958 and 7,110 kg, which indicates that the fleet can tow nets with 350 ps, the standard engine horse power. The fishing operation time was shortened compared with of the existent net, and the large-scale buoy attachment operation was also possible to operate the ship without fish detecting boat. 권현망어업의 선단규모를 현재 5척에서 4척으로 축소하는 데에 목적을 두고 축소형 대형어구를 제작하여 해상실험을 행하였으며, 그 결과는 다음과 같았다. 축소형 대형어구로서 어구의 형상을 측정한 결과, 오비기 앞끝, 오비기 중간, 수비 입구, 앞창, 나발그물 입구, 자루그물 입구, 깔때기, 자루그물 뒤끝의 망고 변화폭과 실제 전개율은 각각 8.7~13.3, 28.1~34.2, 31.3~38.5, 22.7~29.6, 20.9~26.4, 17.2~21.1, 7.4~7.9, 11.9~12.4 m와, 51~78, 55~67, 60~73, 47~62, 42~52, 72~89, 78~83, 72~75%로 나타났다. 오비기 앞끝의 그물목줄 연결로 현용어구에 비하여 오비기 앞끝의 전개율이 대폭 개선되어 오비기, 수비그물까지의 정상적인 망고 형성으로 어군의 구집효과가 매우 양호하게 나타났으며, 나발 및 자루그물의 망고도 현용어구에 비하여 높게 형성되었다. 특히 나발그물 부착으로 포켓형상이 대폭 개선되었고 자루그물에서 입망된 어군의 도피가 저감되어 어획효율이 높게 나타났다. 오비기 및 자루그물의 축소에 따라 어구의 예망장력은 2,771~7,110 kg에 불과하여 법정 기관마력인 350마력으로도 충분한 예망이 가능하였으며, 양망 및 투망시간도 현용어구에 비하여 단축되었고 대형 뜸 부착 조업으로 어탐선 없이도 선단조업이 가능하였다.

農業高等學校 敎育 改善을 위한 農高生의 實態 分析

白永秀 全北大學校 學徒護國團 1977 全國大學生學術硏究發表論文集 Vol.1 No.-

This paper is intended to investigate the actual conditions of the agricultural high school students for the educational improvement. The results, which are obtained through a questionnair answered by 971 students in graduating class, are as follows; 1. The reason why students enter an agricultural high school is that they cannot enter college due to their poor scholastic ability or hard living conditions so that they are easy to fall into self-abandonment as a consquence of senses of inferiority and frustration. 2. Most of the students in agricultural high schools are troubled about fixing their way after granduation. 3. Most of them do not have any bases of independent farming since their parents are petty farmers. 4. In spite of 3-year education in an agricultural high school, they are diffident of farming in both technical skill and theoretical study. 5. They want to enter an office after graduation since they are not capable of independent farming or registering at a college. To solve the problems which are remarked above, I suggest some solutions as follows ; 1. Scholarships should be expanded and increased sharply for agricultural high school students. 2. The resolutions for the problems of fixing a course after graduation should be found. As countermeasures for those problems, farming fund should be loaned for the graduates who want farming, and scholarships should be rendered for those who can go in to a college. 3. The entrance examination system should be reformed so that only the students who are willing to engage in agriculture after graduation can pass the entrance examination. 4. Graduates of an agricultural high school should be specially employed as public officials in the rural areas as far as possible.

평판형 정전분리장치내의 비산회재 거동에 대한 수치해석적 연구

백영수,신나일,장동순,김혜숙 대한환경공학회 1999 대한환경공학회 학술발표논문집 Vol.1999 No.8