상수고도처리에서 UF-오존-생물활성탄의 처리능평가

박영규,이철희 嶺南大學校 環境問題硏究所 1997 環境硏究 Vol.16 No.2

방송활용수업 분석

박석규,전영미 울산과학대학 1995 연구논문집 Vol.21 No.-

본 연구에서는 TV방송매체를 학교현장에 효율적으로 활용할 수 있도록 방송활용수업의 기본개념을 규명하고, 또한 직접 TV방송매체를 수업에 활용하는 교사들을 혼란하게 만들고 있는 자료형 방송활용수업(한국교육개발원의 방송활용수업 모형)과 모델형 방송활용수업(일본의 방송에 의한 수업 모형)의 활용목적, 활용절차 및 활용방법에서 각각의 장단점을 비교.검토함으로써 TV방송매체를 수업에 직접 활용하는 교사들에게 방송활용수업에 대한 이해는 물론 방송교재를 수업에 활용하는 기준을 제공하고자 한다. The main research tasks of the present study was to analyze the instructional instructional model, and methodological features in teaching-learning process of the two types of the instruction using ITV program, i.e. the materials type of the instruction using ITV program and the modeling type of the instruction using ITV program. The main purposes of the present study through these analyses were as follows: (1) To establish the purpose and methodology of using ITV program in classroom. (2) To provide the practical evidences that is useful to solve the selective problems, that is,which type of the instruction using ITV program should be used? The obtained conclusions of the present study were as follows: (1) The type of the instruction using ITV program that could optimize the characteristics and functions of ITV program is the modeling type of the instruction using ITV program. (2) The research movement of the instructional system and design is transformed to cognition paradigm and structural paradigm. Therefore, the proper type of the instruction using ITV program that come up with these trends is the modeling type of the instruction using ITV program. (3) The instruction using ITV program of the foregin countries is transformed to the pararell curriculum of the instruction using ITV program that could foster the ability of monitoring ITV program. Therefore, the instruction using ITV program that could satisfy the pararell curriculum is the modeling type of the instruction using ITV program. (4) The instruction using ITV program is the modeling type of the instruction using ITV program, that could optimize the information processing ability and problem solving ability needed in modern inforamtion society. (5) The instruction using ITV program is the materials type of the instruction using ITV program, that could make learners to acquire knowledge systematically. (6) Researchers of the present study have explored the instruction using ITV program that could be applied to this country. And the new type of the instruction using ITV program explored by the researcher is a comprehensive type of the instruction using ITV program. A comprehensive type of the instruction using ITV program was explored by considering the mothodological weak points and strong points of the materials type of the instruction using ITV program and the modeling type of the instruction using ITV program. A comprehensive type of the instruction using ITV program could foster not only systematic learning of knowledge but also information processing ability and problem solving ability. And a comprehensive type of the instruction using ITV program makes teachers understand students, and make students cognize teachers as the comraders of learning. As though a comprehensive type of the instruction using ITV program explored by researcher dose not use advanced component such as computer and compact disk, it is a type of media-mixture technique, and therefore it can be accomdated freely. In conclusion, Teachers should understand various types of the instruction using ITV program, and should find the most suitable type of the instruction using ITV program that is useful to various instructional purposes. And to be the most effective teacher, they shoule used to every type of the instruction using ITV program.

大規模 染色工團 廢水處理技術

박영규 嶺南大學校 環境問題硏究所 1993 環境硏究 Vol.12 No.2

全南地方 飼育乳牛에 있어서 繁殖障害의 實態 및 發生要因分析

朴永埈,康炳奎 全南大學校 農漁村開發硏究所 1972 農業科學技術硏究 Vol.6 No.-

A systemic studies for reproductive and nutritional problems to conduct a herd infertility examinations were performed on one hundred and fourty seven cows in Kwang-ju, Chonnam area during the period from June 1 to August 30, 1971. The examination involves evaluation of breeding history and laboratory tests to make an objective diagnosis on nutrio-reproductive syndrome. An analysis of data from a dairy herd with a repeat breeding problems is presented and the purpose of this paper is to discuss some management practices that relate to cattle fertility, some of which are directly applicable today and some that may become available in the future. 1. Total of 147 cows examined were grouped as pregnant(60.5%), anestrus after breeding(10.8%), unknown to conception(15.7%), repeat breeder(10.8%) and others(2.1 %). Evaluation for the breeding history of the herd and the reasons for culling indicated that the repeat breeder was the major problems especially on the large herd (type-A and B farm) than the small one (type-C) in this area. 2. The reproductive histories and results of reproductive examainations were as follows. Calving intervals were 512 days(17.4 months), the interval from parturition to first breeding 91.3 days and postpartum interval to first estrus 52.6 days respectively. Service per conception rate was observed as 1.4, and the 30-60-day and 60-90-day nonereturns were 42.9 and 91.5 per cent. These findings were a sign that cows might not be cycling by 60 days, or that estrus detection was inferior. 3. Tendency towards a frequency of conception and parturition through one year was evaluated, and it was suggested that the problems of summer sterility should be re-evaluated because of the conception rate was low in August to October. On the other hand, natural breeding was frequently used instead of artificial insemination service on the mating system in this area. 4. The mean value of the examined cows for red blood cell count and hemoglobin values were 5.5×10 6 per cmm and 7.8 grams per 100ml of blood. It was markedly noticed that the mean value of red blood cell of the anestrus after breeding group was lower than that of the pregnant group(P<0.05). It seemed to be a anemic condition because of the mean value was relatively low compared with the reported values in other countries. 5. The mean value for total serum protein was 7.3 grams per 100ml of blood and it was observed that unknown to conception group showed the lowest value, and almost all the cows which showed abnormal values belonged to the repeat breeder group. 6. The mean value for serum calcium was 4.5 mEq per liter of blood, which was coincide with the lowest range of the normal value(4.5 to 5.5mEq/L). Significant differences on the calcium contents were observed between the anestrus after breeding(P<0.05) and repeat breeder group(P<0.01) to pregnant group. On the other hand, the mean value for serum inorganic phosphorus was 7.3mg per 100ml of blood, which was the normal value(7.0 to 7.5mg/100ml). The Ca/P ratio was observed as 1.47 as a mean of total examined cows but more than 50 per cent of repeat breeder and unknown to conception groups showed, hypocalcemia. 7. Normal A/G ratio was observed as a mean, but 62 cows(45.6%) were positive by the liver function test(Hayem's and gross reaction), and almost all the positive cows on the test had the abnormal total serum protein values. 8. No significant features were observed among the groups in the mode of internalparasite infection, but the liver-fluke infection was demonstrated in 48 cows(32.6%), and of these 66.7 per cent were positive in the liver function test. 9. Follow-up evaluations on the results of the laboratory tests strongly suggest that the problems of repeat breeder had a tendency to occur more frequently in the large herd (A and B-type farm), and on the other hand, abnormal conditions, especially on the calcium and phosphorus metabolism, observed more frequently in the subsidiary dairy farm management(C-type). 10. With evaluations for maintaining high fertility in healthy herds and illustrated results from a herd on a systemic herd health programs, followings may be pointed out for recommendation. First, it is necessary to consider a countermeasure against the faulty management followed by the tendency of large herd. Second, the feeding and management technic of farmers should be improved not to-produce the nutrio-reproductive syndrome. Third, the poor test results of repeat breeder and unknown to conception groups may be related with. the reproductive disturbances and actions should be taken to increase the reproductive efficiency.

인공함량과-고도처리공정에 의한 안전한 먹는 물의 생산

박영규 嶺南大學校 環境問題硏究所 1997 環境硏究 Vol.16 No.2

安東댐과 公山댐의 水質과 藻類 特性 比較 硏究

朴永圭,李哲熙,韓明鎬,李榮浩 嶺南大學校 環境問題硏究所 1989 環境硏究 Vol.9 No.1

This study was conducted to investigate the water quality and algae, and to evaluate the trophic state in Lake Andong and Lake Kongsan. The results are summarised as followes; 1. The differences between maximum and minimum water temperature with the water depth were 17.4℃ and 4.5℃ respectively on September for Lake Kongsan. The differences between maximum and minimum DO saturation degree with the water depth were 61.5% on December for Lake Andong and 76.5% on September for Lake Kongsan. 2. It was founded that trophic state of Lake Andong and Lake Kongsan were mesotrophic state and eutrophic state, respectively by trophic state delineation of US EPA and Carson's trophic state index(TSI). 3. Identified phytoplanktons were 86 species, 1,361 cell/ml in Lake Andong. Among them, Diatoms accounted for 91.4% and Genus of Fragilralia which accounted for 45% was predominant. In case of Lake Kongsan, 92 species, 1,228 cell/ml were identified. Among them, Blue-greens accounted for 69.7% and predominant Genus was Anacystis which accounted for more than 50%. 4. Identified taste and order inducing phytoplankton for Lake Andong and Lake Kongsan were 49 species, 536 cell/ml and 86 species, 1,148 cell/ml, respectively. Identified filter clogging phytoplanktons for Lake Andong and Lake Kongsan were 37 species, 825 cell/ml and 7 species, 79 cell/ml, respectively.

수돗물 소독방법의 최근 동향

박영규 영남대학교 환경문제연구소 2000 環境硏究 Vol.19 No.2

본 논문에서는 염소와 대체소독제로 이산화염소, 오존 및 자외선을 사용할 경우 병원성미생물의 살균, 소독부생성물의 생성 및 세균의 재성장 특성을 문헌자료를 이용하여 비교하였다. 최종 정수 공정으로 완속모래여과 및 막분리 공정을 도입하여 소독을 하지 않고 정수 하는 네덜란드 Leiduin 정수장을 소개하였다. 소독제를 사용하지 않은 위생적으로 안전한 물을 마시고 싶은 것이 사람들의 욕망이다. 이런 욕망을 충족시킬 수 있는 수돗물로는 보호구역이 지정되어 잘 관리하고 있는 지역의 지하수에서 얻을 수 있다. 그러나 인구가 밀집된 대도시 지역은 소독을 하지 않고는 대량의 수돗물을 생산할 수 없는 실정이다. 수질이 좋은 원수를 이용하고 최상의 정수기술과 미생물학적으로나 화학적으로 안전성이 있는 소독제를 사용하는 종합수도시스템을 구축하여 정수하면 안전한 수돗물을 생산할 수 있다. 대체소독제의 개발은 많은 분야의 연구자가 관련되고 있어 폭넓은 상호협력과 사회적인 호응을 얻어야 가능할 것이다. This paper reviews the literature to compare the characteristics of pathogenic microorganism disinfection, disinfection by-products, and bacteria regrowth in the case of using chlorine, chlorine dioxide, ozonation, and ultra violet irradiation as disinfectant. Also, this article illustrates the case of Leiduin water works, which does not disinfect water by treating the slow sand filtration or the membrane separation as the final purification process. It is human being's desire to drink the safety drinking water that does not contain disinfectant. The drinking water that satisfies this desire can be obtained from ground water in the region designated as protection area. However, the densely-populated metropolitan area produces large amount of tap water inevitably treated with disinfectant. The safety drinking water can be obtained by using water resource with good quality and by establishing the total water supply system, which uses microbiologically and chemically safe disinfectant and adopts the most up-dated purification technology that removes pathogenic microorganism sand harmful compounds and prevents bacteria regrowth in the water distribution system. Extensive cooperation and social support are necessary for the development of alternative disinfectants, which requires substantial interdisciplinary researches. Keywords : disinfection, alternative disinfectant, disinfection by-products, bacteria regrowth, total water supply system

活性슬럿지 沈降特性 評價에 있어서 Flux理論과 操作線法의 比較

朴永圭,千命元,梁龍雲 嶺南大學校 環境問題硏究所 1989 環境硏究 Vol.8 No.2

The activated sludge characteristics orignated from the dye wastewater and the tar wastewater were estimated by the comparison of the flux theory with the operating diagram method. The surface areas of the setting tank of the dye wastewater calculated by both methods were almost equal and the similar results obtained on the tar wastewater. But it was found that the flux theory is not suitable for designing the setting tank, because the activated sludge settling characterisitics could be changed daily and the batch settling tests are time-consuming and labor-intensive. The emperical equation, Vi=V。·?? for the operating diagram proposed by G.T. Daigger and R.E. Roper, Jr was applied to the bye wastewater and the tar wastewater. The emperical parameters, V。, determined on the dye wastewater and the tar wastewater were 7.75m/h and 7.48m/h, respectively. The other emperical parameters, k, also estimated on the dye wastewater and the tar wasterwater were 0.00216(SVI) + 0.106 and 0.00157(SVI) + 0.157, respectvely. Consequently, the following relationships between SVI and sludge settling characteristics of the dye wastewater and the tar wastewater were determined ; dye wastewater ; Vi = 7.75e {-0.00216(SVI) + 0.106)?? tar wastewater ; Vi = 7.75e {-0.00157(SVI) + 0.157)??

金屬-Trien-OH 系의 混合錯物에 關한 硏究

朴永圭,李武康 嶺南大學校 工業技術硏究所 1977 연구보고 Vol.5 No.1

The formation constant of the mixed-ligand complexes in the Cd(Ⅱ), Cu(Ⅱ) and Pb(Ⅱ) -Trien-OH system were studied by polarograph. The determined formation constants (log B(ij)) were follows at 25℃ in the ionic strength of 0.1: metal MT MT₂ M(OH)T M(OH)T₂ M(OH)₂T Cd(Ⅱ) 12.22 14.63 13.58 15.45 15.57 Cu(Ⅱ) 20.16 21.78 22.56 Pb(Ⅱ) 9.98 12.51 14.49 It was also confirmed that the mixed ligand complexes in this system were formed above pH 11 by the calculation of the distribution for complexes at the various pH.

凝集一活性汚泥工程에 의한 폴리에스테르 減量廢水가 主인 染色廢水處理

朴永圭,李哲熙,梁龍雲 嶺南大學校 環境問題硏究所 1989 環境硏究 Vol.8 No.2

This paper prevides the optimal conditions treating with the coagulation process and the activated sludge process for dyeing wastewater composed of 65% polyester loss weight finish wastewater and the rests, various dyeing wastewater. The results are shown as follows : 1. The alum is the most economical coagulant among ferric chloride, ferrous sulfate and alum by comparison sludge yields and the cost of operation, and the efficiency of COD removal is approximate 24% with 800mg/ℓ of alum (7.2% Al₂O₃) at ??. 2. The optimization conditons of COD volumetric loading and retention time for the design of the activated sludge process following the coagulation precipitation are 0.6kg COD/ m³· D(0.15kg COD/kg MLSS. D) and 24hr. 3. Removal efficiency of COD treated with the activated sludge process following the coagulation precipitation is 86% at 30℃, and decreased 75% at 40℃. 4. It is confirmed that the activated sludge process following coagulation precipitation method provides better treatment efficiency than the coagulation precipitation method following the actived sludge process.