계면활성제를 함유한 폐수의 효율적 처리 방법에 관한 연구

Shin,Myoung-Ok,Chung,Moonho 한국환경보건학회 1997 한국환경보건학회지 Vol.23 No.3

The purpose of this study is to evaluate the effectiveness of wastewater treatment containing surfactant. For that, comparative analysis of effectiveness of Featon Oxidation, Aluminum Sulfate, PAC (Poly Aluminum Chloride) on the treatment of the synthetic wastewater containing LAS (Linear Alkyl Sulfate), a main component of the commercial detergent was carried. Then, the optimum pH, the dosage of reagents, and the concentration of the LAS in each treatment were determined. The results of the study were summarized as following. 1. In Fenton Oxidation, optimal pH was 3 and 97.92% removal of LAS was achieved. However, the increase of the pH reduced the efficiency of LAS removal. The proper chemical dosages of FeSO$_4$ and $H_2O_2$ were 300 mg/l and the increase of dosages didn t affected the removal efficiency. Therefore, it was concluded that the economic chemical dosage was 300 mg/l of FeSO$_4$ and $H_2O_2$. 2. In case of Alum treatment, optimal pH was 11 with 61.13% removal efficiency. At other pH range, the removal efficiency was very low indicating that removal efficiency is greatly influenced by pH. The proper chemical dosage was 200 mg/l with the removal efficiency of 77.65%. The increase of chemical dosage, however, reduced the removal efficiency. 3. In case of using PAC, optimal pH was 6 with 97.99% removal efficiency. The result showed that wastewaters containing surfactant were almost completely removed at pH 6 by PAC. Removal efficiency was decreased by increasing PAC dosage higher than 400 mg/l and dosage over 700 mg/l of PAC abolished the treatment. 4. The comparative analysis of three methods revealed that the effective pH ranges were at pH 2-5 with Fenton oxidation, at pH 6-11 with PAC, and pH 11 with Alum. The removal efficiencies at these pH were 83.95-97.92%, 75.98-97.99% and 61.13%, respectively. 5. Increase in LAS concentration reduced the removal efficiencies of all three methods. In the case of PAC or Alum treatment, treatment abolished at LAS concentration higher than 700 mg/l.

초등학교 수학영재, 과학영재, 일반 학생의 학습유형 및 교수방법 선호도 비교

이신동(Lee Shin Dong),원재권(Won Jae Gourn),김기명(Kim Ki Myoung) 한국영재교육학회 2007 영재와 영재교육 Vol.6 No.2

본 연구는 Kolb의 4가지 학습유형에 따라 초등학교 수학영재, 과학영재, 일반 학생의 학습유형을 비교해 보고, 학습유형에 따라 교수방법 선호도가 어떻게 달라지는지 확인하기 위한 것이다. 이를 위해 지역교육청 2곳의 영재교육원 초등학교 수학ㆍ과학영재 학생 각60명, 일반 학생은 초등학교 2곳의 6학년 120명 총 240명을 연구 대상으로 하였으며, 이들의 학습유형검사ㆍ교수방법선호도 검사의 자료를 수집ㆍ분석하였다. 검사도구로는 Kolb(1999)의 학습유형검사(LSI), Renzulli, Rizza, & Smith(2002)의 교수방법 선호도 측정 검사지를 활용하였다. 본 연구의 결과 수학영재 학생과 과학영재학생의 학습유형은 차이가 없었으나 영재학생과 일반학생의 학습유형에는 차이가 있었으며, 동화적 학습자 유형을 제외한 발산적 학습자, 수렴적 학습자, 조절적 학습자 유형은 고유하게 선호하는 교수방법들을 가지고 있었다. 또한 수학영재 학생과 일반학생은 학습유형에 따른 교수방법 선호도에 차이가 없었으나, 과학영재 학생은 학습유형에 따fms 교수방법 선호도가 다르게 나타났다. 이런 결과는 영재학생과 일반학생의 학습유형이 서로 다르고 그에 따른 교수방법도 다르다는 것을 나타낸다. 따라서 교실수업을 담당하는 교사들은 학생들의 학습유형에 맞는 교수방법을 제공하여 교수적합성을 달성함과 동시에 교수 효과를 극대화하기 위해서 각각의 학습유형과 교수방법에 대한 충분한 이해가 선행되어야 할 것이다. The purpose of this study is to compare the learning styles of the mathematics gifted, the science gifted, and general students at elementary schools by Kolb"s four learning styles, and ascertain how the preference of instructional methods become different by learning style. To achieve the purpose in this study, the four propositions were set as follows: First, what differences exist among the mathematics gifted, the science gifted and general students in terms of learning style? Second, what differences exist in terms of the preference of instructional methods by learning style among the mathematics gifted, the science gifted, and general students? To solve the abovementioned propositions, this study targeted 60 elementary school-level mathematics gifted students, 60 science gifted students at gifted students education institutes, and 120 six graders at Elementary School: this study targeted a total of 240 students. For the learning style test used in this study, ""Learning Style Inventory (LSI),"" which originally presented by Kolb in 1976, but was revised anew in 1999, and was translated by Lee, Shin-dong (2005), was used. As a test to measure the preference of instructional methods, ""Measure of Student Preference for Instructional Techniques,"" developed by Renzulli, Rizza, and Smith (2002), and translated by Lee Shin-dong (2005) was used. The confidence levels of the tests were good, respectively. The analysis of the collected test responses was tested through a confidence analysis, technical statistics, MANOVA, and Sheffe test was used for follow up test. The SPSS 12.0 Program was used for the analysis. The analytical results of the collected data are presented as follows: Firstly, there was no difference in the learning style of the mathematics gifted and the science gifted, but there was difference in the learning style of the gifted and general students. Secondly, it was identified that divergent learners, convergent learners, regulated learners, except for assimilative learners, had their preferred instructional methods. Thirdly, there was no difference in the preference of instructional methods by learning style and gender between the mathematics gifted and general students. The science gifted students had different preference of instructional methods by learning style, but they did not show any difference on the preference of instructional methods by gender. In conclusion, the divergent learners and convergent learners are judged to be more active in learning activities and have higher learning motivation. Teachers taking charge of classroom teaching should provide instructional methods in line with such learning styles so as to achieve the adequacy of instruction, and draw maximum instructional effects. Those teachers also need to pay more attention to enhancing learning motivation of the relatively passive regulated learners and assimilative learners.

地黃이 흰쥐의 腸 연동運動에 미치는 영향

신명섭,손영종,이영종 대한본초학회 2001 大韓本草學會誌 Vol.16 No.1

The effects of orally dosed Rehmanniae Radix on the propulsive peristalsis of rat was examined by measuring the transfer rates of barium-gum inside the rat's gastrointestine. The results were such as the followings : 1. Significant decrease of transfer rate was observed in the dried Rehmanniae Radix dosed group. 2. The decreasing rates of both the 3rd Rehmanniae Radix prep. and 9th Rehmanniae Radix prep. dosed group were higher than that of the dried Rehmanniae Radix dosed group. 3. The decreasing rat of the group of dried Rehmanniae Radix dosed together with Glycyrrhizae Radix and Amomi Semen was higher than that of the dried Rehmanniae Radix individually dosed group. 4. The decreasing rate of the group of atropine dosed together with dried Rehmanniae Radix was higher that of the dried Rehmanniae Radix individually dosed group. But, the decreasing rate of the group of adrenaline dosed together with dried Rehmanniae Radix didn't show much difference from that of the dried Rehmanniae Radix individually dosed group. These results suggests that Rehmanniae Radix has an inhibitory effect on the propulsive peristalsis of the rat's gastrointestine.

동종골수이식 환자에서 발생한 지역사회발생 Parainfluenza virus 3형 폐렴 1예

신종욱,조요한,강철인,김성한,이상윤,김의석,오명돈,이환종,박선양,김병국,최강원 대한감염학회 2002 감염 Vol.34 No.5

변형된 측경부 전진피판술을 이용한 익상경 기형의 교정

신명수,박철규 大韓成形外科學會 1991 Archives of Plastic Surgery Vol.18 No.1

Pterygium colli is a congenital malformation characterized by bilateral webbing of the neck extending from the mastoid to the acromion. The etiology of the webbed neck deformity is variable which include chromosomal abnormality, congenital disease and jugular lymphatic obstruction sequence. Aims of the surgical correction is to create a normal neck contour with a symmetrical posterior hairline while avoiding obvious scarring especially on the anterior and lateral neck. We used modified lateral cervical advancement technique for the correction of 3 cases of webbed neck deformity. All scars lie within or along the hairline and extend onto the posterolateral shoulder area. And this modification also provided natural hairine and neck controur. We can avoid tension suture and vertical suture line for the prevention of scar spreading by this medthod. There was no recurrence of neck deformity during 6 month to 2 year follow up period.

Bowling 투구 動作分析

신성휴,위승두,손명성,구희성 조선대학교 스포츠과학연구소 1998 스포츠科學硏究 Vol.9 No.-

The Purpose of this study is the provide basic data for bowlers by analyzing the kinematical variables of throwing motion to the male pro bowler using 3-dimensional image analysis method. This researcher took the pictures with a video camera, analyzed them using the Kwon 3D program. 1×4×2m control object installed to get a 3 dimensional space coordinates. Results were as follows. 1. It was indicated that the trunk angle did not change left and right. Back and forth from stance to release motions of three subjects, and the average angle of trunk angle at the stance and that at the tabular side were 19.5˚ and 14.6˚ respectively, which showed they did not deviated from well-known range of forward direction, 15-20˚ and lateral direction 10-15˚. Also the trunk angle of release motion was average 17.1˚ for thalamus side, 41.3˚ for tabular side. 2. It was indicated that the knee angle repeated the increase and decrease to a small degree from the first to the fourth phase, the average angle of left knee at the release motion, the sixth phase was 110.8˚, which was higher than generally known 90˚.

Cyclooxygenase-2 저해제로서의 benzothiazine 유도체 합성과 항염작용 평가

신혜순,박명숙,권순경 德成女子大學校 藥學硏究所 2000 藥學論文誌 Vol.11 No.1

The antiinflammatory mechanism of NSAIDs is attributed to the reduction of prostaglandin synthesis by the direct inhibition of cyclooxygenase. Inhibition of prostaglandin production in organs such as stomach and kidney can result in gastric lesions, nephrotoxicity and increased bleeding. In this study, newly designed COX-2 inhibitors, synthesized 1,2-benzothiazine derivatives, were screened in vitro for selectivity of COX-1 and COX-2 inhibition properties. Lead compounds in the structure-activity relationship were studied to synthesize new highly selective COX-2 inhibitors. To determine inhibitory effect of COX-2, synthesized 1,2-benzothiazine derivatives were screened with accumulation of prostaglandin by lipopolysaccharide (LPS) in aspirin-treated macrophages and murine macropharge cell. Some of synthesized 1,2-benzothiazine derivatives were shown to be effective as selective COX-2 inhibitory activity. Others exhibited a preferential inhibition of COX-2, although some COX-1 inhibitory activity was still present. As a conclusion, simple monomer derivatives were more active than dimer derivatives. Substitution of halogen (Br, Cl) on the benzothiazine nucleus slightly enhanced inhibition activity.

柔道技術 중 허벅다리걸기의 運動學的 特性

신성휴,손명성,김원섭,최승필 한국운동역학회 1998 한국운동역학회지 Vol.8 No.2

This study has been aimed to analyze UCHIMATE technique of Judo gymnastically. The following are the results and the proposition obtained through an image analysis method 3 men half heavy weight champions of the national Judo standing team(85-95kg) were used as subjects for the study. 1. CONCLUSION The following are the conclusion obtained through the discussion of analysis results of the Uchimata technique using 3 men, half heavy weight(85-95kg) champions of the National standing Judo team. 1) The time performing total technique were 1.48-seconds which was performinglonger than the light heavy weight class of 1.28-seconds by 0.20-seconds, this showed that the heavy weight class players demonstrated the technique later than the light heavy weight class palyers. 2) The average length of moving 1-step leg for attacking was 24.27cm, and 2-step leg moving was 92.87cm on average. Therefore, the shorter the moving distance, the more the technique performing hour could be shortened. 3) In the hanging phase, the moving displacement of the center of gravity of the body weight showed in horizontal, vertical, right and left direction 28.97cm, 21.59cm and 13.57cm respectively. Each of which were longer than the phase of KUZUSHI and TSUKURI. Such results show that the center of gravity of the body in move lift the opponent. This reducing the displacement of body weight from the center toward the right and left direction in the phase of KAKE is considered to be effective in demonstrationg the technique. 4)The central speed of the body was 0.8cm per second on average and the average vertical speed was 0.74cm per second. The speed of right and left movement was 0.51cm per second on average which showed the horizontal speed was the fastest while it is preferred that the vertical speed should be faster than that of the horizontal. 5) Angle of the Trunk showed 98.13 ˚ on average in the hanging phase and the larger the trunk angle, the shorter the needed time to demonstrate the technique, thus making the throw of the opponent over shoulder more advantageous. 2. PROPOSTION The following propositions are suggested through this analysis for further study : 1) It is to be considered that the kinetics in hanging the thigh and the degree of every segment of the body be studied in a more detailed fashion. 2) A study on the technique of thigh hanging in an actual game situation (rather than during mere exercises) is necessary. 3) It is necessary to study the TORI and UKE techniques together. 4) The study of each weight class ought to be performed.

新政府 出帆 以後 金融, 資本自由化 政策의 展開 및 앞으로의 方向

申明浩 서울大學校 經濟硏究所 1994 經濟論集 Vol.33 No.4

우리 경제는 지난 30여년간 지속적인 고도성장을 이룩하여 이제는 中進工業國家로서의 면모를 과시하고 있다. 이같은 경제발전의 원동력은 그 동안 權威主義體制하에서 정부의 指示와 統制에 의해 국내외의 가용자원을 정책적으로 필요한 분야에 동원ㆍ가동할 수 있었던 점이라고 볼 수 있다. 그러나 우리 경제의 규모가 확대되고 구조가 다양화됨에 따라 더 이상의 경제발전을 위한 정부의 지시와 통제는 가능하지도, 바람직 하지도 않게 되었다. 우루과이라운드 무역협상의 종결과 국제 경제의 지역화ㆍ통합화현상은 우리에게 새로운 對應態勢를 강요하고 있다. 이같은 전환과정에서 출범한 신정부는 과거의 권위주의적 경제운영방식을 탈피하고 모든 국민의 自發的 參與와 能動的인 創意力에 입각한 경제운영을 목표로 하는 新經濟政策을 착수하였다. 이에 따라 금융부문에서는 金融의 自由化ㆍ國際化를 목표로 한 각종 改革을 추진하고 있다. 금융ㆍ자본자유화는 우리 나라가 21세기 선진 경제로 나아가는 데 있어서 금융의 효율화와 경쟁력 제고를 위하여 필수적인 것으로 이해되고 있으나, 선진국들의 금융자유화 경험을 볼 때 金融制度의 健全性과 安定性, 그리고 거시경제전반에 걸쳐 심각한 충격을 초래할 危險도 간과할 수 없다. 이에 금융ㆍ자본자유화는 각종의 補完的 措置와 함께 신중히 추진되어야 한다.

초등과학 탐구수업 지도자료의 활용 실태

신영준,장명덕,배진호,권난주,여상인,이희순,노석구 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.2

In this study, we had tried to present a plan for improving the actual conditions of practical utilization of teaching material for 6th grade science developed by Ministry of Education & Human Resources Development and distributed to all elementary schools in Korea. Also we presented ways of better utilization of the teaching material after investigating the actual conditions of practical utilization. A survey was made to investigate and collect all data in the major metropolitan cities, the Kangwon, Chungcheong, Honam, and Kyeongsang area, respectively. We surveyed 316 6th grader teachers to investigate the actual conditions of distribution and utilization of teaching material as a general research. In addition, we surveyed 46 teachers to investigate the organization and content of teaching material as a particular research. The results are as follows. First, the teaching material was not approximately transmitted and kept to 6th grader teachers. Second, the utilization guide was not made. Third, it was reported that the thematic divisions of teaching material was a strong point, but the less detailed experiment manual was a weak point. Fourth, the consideration of content difficulties and simplicity was necessary to improve the material. Fifth, additional items should be included in the introductory presentation, convenience of reorganization, activity material causing learning interest, guidance of substitution experiment, and more concrete notice of experiment activity. Finally, there were positive responses of more than 4.0 point of Likert scale (1 to 5 point scale) in detail investigations of thematic items, which could have possibility that the teaching material was helpful to elementary school science field.