학교 중심 신체활동이 비만 청소년의 대혈관 및 미세혈관 기능에 미치는 영향

이용진 서울시립대학교 2011 국내석사

The physical fitness level, due to youth's less exercise, has been decreasing gradually. In addition, metabolic diseases of obesity and the prevalence of cardiovascular diseases have increased. In this study, through a 12 week of school-based exercise program on physical activity promotion, obesity in middle school boys through analysis of their body composition, cardiorespiratory fitness, cardiovascular risk factors , the central blood vessels and microvascular function has been created to evaluate how the impact was. Adolescent subjects based on standard growth charts and BMI score of above 95th percentile on the basis of 25kg/m2. Twenty one make subjects, between the ages of thirteen and fourteen, were chosen to take part in the exercise program. They were all chosen because of their high BMI and relation to the growth chart. The exercise group contained 11 students while the control group had 10 students. The exercise group everyday for 12 weeks participated in school-based physical activity, which consisted of a daily warm-up (5 minutes), designated exercise (30 minutes), and cool down exercises (5 minutes) conducted in a total of 40 minutes. The designated exercise of moderate intensity was aerobic exercise. The Control Group during the study period prohibited from the participation of any special exercise and was to told to their maintain usual lifestyle. Participants at the beginning as well as the end measured variables. The variable included associated with the experiment students' height, weight, body composition, waist circumference, blood pressure, cardiorespiratory fitness, blood lipids and glucose level. Carotid vascular function were measured through the central femoral pulse wave velocity, and the micro-vascular function indices were measured by the pulse amplification index. The results of this study are as follows. School-based physical activity, body weight (p = 0.005) and height (p = 0.001) in both of the groups were statistically and significantly increased. However, waist circumference in the exercise group and control group showed no significant effect (p= 0.019) through increased activity. Cardiorespiratory fitness rose by 18% in the exercise group, which was a significant increase (p = 0.041). On the other hand, blood pressure blood lipids, and glucose did not show any significant changes. The indicator of microvascular function, the pulse amplification index, showed an increase of 7% in the exercise group, the difference was statistically significant (p = 0.019). The Central Artery feature also called the carotid artery tested by the femoral pulse wave velocity, showed a decreasing trend, but it did not show statistically significant differences. The school-based physical activity increased cardiorespiratory fitness, and demonstrated improvement of microvascular function, which displayed a strong association. (r =. 457, p = 0.037). In conclusion, reduction of waist circumference, increased cardiorespiratory fitness, and improvement of microvascular function had effect during 12 weeks throughout the school-based physical activity. Obese adolescents who have an increase of cardiovascular activity as well as vascular changes have been proven to improve the life of the student and prevent further symptoms of obesity as a result of the test, it is seen that there is a necessity and importance of school physical education within the school curriculum. 본 연구는 12주간의 학교중심 신체활동 증진 운동 프로그램이 비만 남자 중학생의 신체조성, 심폐체력, 심혈관계 위험인자 그리고 중심 혈관과 미세혈관 기능에 미치는 영향에 대해 알아보았다. 연구 대상은 소아 청소년 표준성장 도표를 기준으로 체질량지수 95백분위수 이상 또는 25kg/m2 이상을 기준으로 비만 판정을 받은 남학생 21명(평균나이 13-14세)을 대상으로 운동집단 11명과 통제 집단 10명으로 무선배정 하였다. 운동집단은 총 12주간 주 5일, 학교 중심 신체활동에 참가하였으며, 1회 운동시간은 준비운동(5분), 본 운동(30분), 정리운동(5분)을 포함한 총 40분 정도 실시하였다. 운동 형태는 중정도 강도에 해당되는 유산소성 운동으로 하였다. 통제그룹은 연구기간동안 특별한 운동으로의 참여를 제한하고 평소 생활습관을 유지하도록 하였다. 측정 변인으로 실험 참가 전, 후에 신장, 체중, 체성분, 허리둘레, 혈압, 심폐체력, 혈중지질 및 글루코스를 측정하였으며, 중심혈관기능으로 경동맥-대퇴동맥 맥파전파속도를, 미세혈관기능으로 맥 증폭지수를 측정하였다. 본 연구의 결과는 다음과 같다. 학교 중심 신체활동 후 체중(p=0.005)과 신장(p=0.001)은 집단 모두에서 통계적으로 모두 유의하게 증가되었으나 허리둘레는 운동 집단과 통제집단에서 유의한 상호작용 효과를 보였다(p=0.019). 심폐체력은 운동그룹에서 약 18% 정도 통계적으로 유의하게 증가하였다(p=0.041) 그러나 혈압과 혈중 지질, 글루코스에서는 변화를 나타내지 않았다. 미세혈관 기능 지표인 맥 증폭지수는 운동 그룹에서 7% 증가하였으며, 통계적으로 유의한 차이를 보였다(p=0.019). 중심동맥 혈관 기능인 경동맥-대퇴동맥 맥파전파속도는 감소하는 경향을 보였으나 통계적으로 유의한 차이를 나타내지는 않았다. 학교 중심 신체활동 후 심폐체력의 증가와 미세혈관 기능의 개선에 유의한 관련성이 나타났다(r=.457, p=0.037). 이상의 결과를 종합해보면 12주간의 학교 중심 신체활동을 통하여 허리둘레의 감소, 심폐체력의 증가, 그리고 미세혈관 기능의 개선의 효과를 가지고 왔다. 비만 청소년에서 나타나는 심혈관계 위험 요인의 증가 및 혈관의 변화를 조기에 예방하고 개선하는 데 학교 체육의 필요성 및 중요성을 뒷받침 해주는 결과라 사료된다. 주요어 : 비만 청소년, 운동, 허리둘레, 심폐체력, 대혈관 기능, 미세혈관 기능

疏水性 실관막과 유기상 抽出劑에 의한 重金屬 分離에 관한 硏究

이용진 동아대학교 대학원 1998 국내박사

In the recent methods of water treatment and recycling, membrane technologies are practically developed and spotlighted. In this study, the process to remove Cr(Ⅵ), Ni(Ⅱ), Zn(Ⅱ) from aqueous solution by extractant with membrane and stripping(back extraction) of heavy metal from heavy metal - extractant complex into NaOH aqueous solution with membrane was investigated. It was used TOA, TDA, TCMAC, DOPP as organic extractants and hydrophobic hollow fiber membrane. The characteristics of organic extractants was investigated according to acid concentration of aqueous solution with each heavy metal and on the recovery rate with Na0H concentration for heavy metal - extractant complex. The results of a series of extraction-stripping process have been compared with the results obtained from individual processes. Extraction and stripping were also observed to find the rate controlling step according to the change of flow rate with number of membrane. From these experiments, the following results were obtained. 1. By using hollow fiber membrane, an effective removing of heavy metal such as Cr(Ⅵ), Ni(Ⅱ) and Zn(Ⅱ) by extractants is possible due to rapid mass transfer. And recovery of heavy mental from heavy metal - extractant complex is possible by using stripping solution such as NaOH. 2. In the individual process, mass transfer in extraction is 3~5 times faster than that of stripping, and depends on the existence of membrane resistance. 3. The mass transfer of extraction of individual process is similar to that of series of extraction-stripping process. The reason is that concentration of heavy metal complex at initial stage of reaction is almost same as individual process because of low reaction rate in stripping module. And stripping of heavy metal is very low at initial stage of reaction because the concentration of extracted heavy metal at initial stage of reaction is very low, and it is difficult for the heavy metal to contact with stripping solution. 4. The rate controlling step of hydrophobic membrane is solution flow in tube side. And in the case that acqueous solution flows out of membrane with increase of the flow amount, mass transfer becomes lower because of the channeling phenomenon at shell side. 5. In the given concentration range (1.0×10^(-1)~1.0×10^(-5) mol/dm^(3)) of hydrochloric acid, the long-chain aliphatic amine extractants have high distribution ratio for Cr(Ⅵ) and acidic extractant has high distribution ratio for Ni(Ⅱ) and Zn(Ⅱ).

無形資産이 企業價値에 미치는 影響과 波及效果에 관한 硏究 : 토빈q에 의한 實證分析

이용진 홍익대학교 1998 국내석사

전통을 통한 현대적 이미지 표현 : 본인 작품(2014-2018)을 중심으로

이용진 동국대학교 2019 국내석사

본 논문 ‘전통을 통한 현대적 이미지표현’은 지난 2014년에서 2018년 까지 본인이 제작한 작품을 연구 대상으로 하고 있다. 한국화라는 장르 안에서 규격화되고 전승되어 내려오는 기법들을 연구 하여 새롭게 필자의 개성과 생각을 담아 재구성 하고 있는 작품에 대한 작품론이다. 주요 연구 작품은 <오행십이지만다라(五行十二支曼陀羅)>로 해당 작품제목이 십이지(十二支)와 만다라의의 특성을 오행(五行)의 구성요소로 배치했다. 이 연구대상의 작품들은 대개 오방색을 띄고 있는데, 이는 한국의 오행사상을 바탕에 깔고 있다. 여기서 의미하는 오행(五行)이란 재료의 개념으로 원소와 색을 뜻한다. 청(青)-적(赤)-황(黃)-흑(黑)-백(白)의 오방색(五方色)으로 이루어진 오색을 기본으로 간색을 만들어 사용하고 있다. 전통이란 어찌 보면 지나간 한 시대의 영역 일 수 있다. 과거가 없이 현재는 존재할 수는 없다. 현재와 과거가 같이 공존하는 것들이 있다. 오래된 고궁들이 현대 건물과 조화로이 있듯 이 논문 안에 있는 이미지의 표현들은 본인만의 독창적인 조형미를 표현하고자 했다. 이러한 전통적인 요소들은 현대적인 요소들과 만나 새로운 화면구성의 작품으로 재탄생한다. 또한 내부에 작품을 살펴보면 다양한 요소로서 작품을 표현하는 방식을 취하고 있으며 다양한 기법연구를 통하고 있다. 본 연구는 1장 서론에서 연구목적 및 필요성에 대해 설명한다. 2장 표현방식의 연구에서는 전통적인 회화기법과 동양의 전통적 구조에 대해 알아보고 본인의 작품 안에 드러난 의의를 밝힌다. 제3장에서 본인의 작품을 분석하였다. This paper, "Presentation of Modern Images Through Traditional," is a study of his own works from 2014 to 2018. It is a theory of work that is reconstructed with the writer's personality and thoughts by studying standardized and passed down techniques within the genre of Korean painting. The main work is "The Five Elements Twelve Earthly Branches Mandala " which features twelve zodiacal and mandala characteristics as elements of misadventure. Most of the works on this research target are oblique, based on the image of Korea's misbehavior. A misbehavior is the concept of a material, which means element and color. The color is made based on the color black, which is the color red, yellow, white, and black. Tradition, in a way, can be the domain of a bygone era. It cannot exist at present without the past. There are things that coexist with the present and the past. Just as the old palaces have modern buildings and harmony, the expressions of images in this paper wanted to express their own original formative beauty. These traditional elements meet with modern elements and are reborn as new screen compositions. Also, if you look at the works inside, they represent a variety of urinary works and work through a variety of techniques. This study is described in the introduction in Chapter 1. Chapter 2 In the study of expression methods, the author examines traditional painting techniques and the traditional structure of the East and reveals the significance of his work. The third chapter analyzed his work.

ICT를 활용한 협동학습에서 PC 제공 방식이 학생들의 학습 관련 태도에 미치는 영향

이용진 한양대학교 교육대학원 2005 국내석사

Multilock 대퇴 스템을 이용한 무시멘트형 인공 고관절 전치환술 : 최소 5년 이상 추시 결과

이용진 조선대학교 대학원 2006 국내석사

Purpose: This study evaluated the osteolysis of the femoral stem and acetabular cup, the frequency and cause of replacements in a minimum of a five year result of primary total hip arthroplasty with a non-cemented Multilock femoral stem from clinical and radiological results. Materials and Methods: The clinical and radiological results of forty-four total hip arthroplasty in forty patients that were available for follow up for a minimum of 5 years(average90.6 months) using a Multilock femoral stem and Harris-Galante II acetabular component performed between June 1993 and February 1997 were reviewed. Results: The average Harris hip score improved from 54.5 points preoperatively to 91.5 points postoperatively. The stability of the femoral stem based on the Engh's evaluation showed stable with osseous ingrowth in 43 cases(98%), stable with fibrous ingrowth in 1 case(2%), and no unstable fixation. Femoral osteolysis occurred in 17 cases(38%) which was mostly restricted to zoneⅠand Ⅶ. Acetabular osteolysis occurred in 9 cases(20.5%), with zone Ⅱ being the most common location. There were no cases of femoral stem revision. 7 cases of acetabular revision was done due to the defect of Harris-Galante II acetabular cup in 3 cases and osteolysis of a large area in 4 cases. The mean revision period was 73 months(37-112) from the initial operation. Conclusion: The femoral stem devised to press fit through circumferential proximal porous coating and flute type distal stem has the benefit of excellent fixation and prevention of distal bone canal wear particle invasion caused by proximal bone ingrowth. However, the frequency of revision was great due to the structural defect of Harris-Galante type II acetabular cup and the high occurrence of osteolysis.

(A)Crossover lattice equation of state near to and far from the critical point

이용진 서울대학교 대학원 2008 국내석사

Pd가 첨가된 Cu/ZnO/ZrO2/Al2O3 촉매를 이용한 메탄올의 수증기 개질 연구

이용진 숭실대학교 대학원 2008 국내석사

급격한 산업화로 인해 화석연료의 사용이 증가되었고, 이에 따른 대기 오염 및 지구 온난화 등의 환경 문제에 대하여 전세계적으로 많은 관심을 기울이고 있다. 이 같은 문제의 해결을 위한 노력의 일환으로 천연가스, 수소, 태양전지, 연료전지 등의 대체 에너지에 대한 연구가 활발히 진행되고 있다. 특히, 수소는 친환경적이며 높은 에너지 방출량을 가지고 있어 차세대 대체 에너지로 관심이 높다. 수소의 효율적인 생산 방법에 대한 연구가 활발히 진행되고 있으며, 메탄올을 이용한 수증기 개질 방법도 그 중의 하나이다. 본 연구에서는 주촉매로 Cu를, 조촉매로 Zn과 Zr을, 담체로 Al2O3를 사용하여 조성 비율과 촉매의 제조 방법에 따른 수소 생산에 대해 연구하였다. 메탄올을 이용한 수증기 개질 반응의 온도는 200 ~ 300 ℃였으며, H2O과 CH3OH의 몰비는 1.5였다. 촉매 반응 후의 반응물과 생성물은 가스 크로마토그래프를 사용하였다. 촉매의 조성 비율을 변화시킨 결과, 몰비로 Cu : Zn : Zr : Al = 60 : 25 : 5 : 10의 조성일 때 촉매의 활성이 가장 우수하였다. 촉매를 연속침전법으로 제조할 경우에 보다 우수한 활성을 나타났다. 촉매에 활성체이며 열안정성이 우수한 Pd를 첨가한 결과, 3 mol%를 첨가하였을 때 수율이 가장 우수하였으며, Pd가 첨가되지 않은 촉매보다 수율이 약 16% 향상되었으며, 촉매의 사용시간이 약 3배 증가하였다. The use of fossil fuel has been increased due to rapid industrialization and environmental issues such as air pollution and global warming have been emerging as major concern. Alternative fuel like natural gases, hydrogen, solar cell and fuel cell has been studied and developed to solve there issues. Especially, hydrogen which is environmentally friendly and has high energy potential is promising as alternative fuel. The methods for effective hydrogen production have been studied and new catalyst have been studied. Steam reforming of methanol is one of hydrogen production methods and many efforts have been made to prepare effective catalyst. In this study, copper, zinc and zirconium, and alumina were selected as active component, promoter, and support, respectively. The effects of composition and preparation methods of catalysts on hydrogen production yield were studied. In steam reforming reaction molar ratio of 1.5(H2O/CH3OH) was injected at 200 ∼ 300 ℃. After catalytic reaction, reactant and product were analyzed with gas chromatograph. The best catalyst was prepared with sequential precipitation method and its composition was the following : Cu : Zn : Al = 60 : 25 : 5 : 10 in mole ratio. When a small amount of Pd 3 mol% was added, the yield increased by 16% and life time increased by 3 times.

퀴논 환원효소 유도물질 설포라페인의 도파민 세포 보호 효과

이용진 서울市立大學校 2004 국내석사

저시력 학생의 '지도의 이해'수업에 대한 질적사례연구

이용진 대구대학교 2010 국내석사

The purpose of this study was to examine the awareness of students with low vision about instruction of a map and problems with that instruction in a bid to suggest some of the right directions for map instruction geared toward students with low vision. The subjects in this study were four students with low vision in a school for youth with visual impairment in the city of Chungju. After they took special lessons in understanding of a map, an in-depth interview was held. The findings of the study on the perception of the students about map instruction were as follows: First, as for awareness of signs, they generally had a good understanding of signs that were similar to the real images of things such as schools or churches or that they already learned from their experiences. But they found it quite difficult to make out signs that showed some particular characteristics of things like the signs of railroads, and they also had difficulties in understanding signs that represented things of which they didn't know the exact meaning or characteristics like patches or rice fields. Second, concerning perception of directions, they considered it hard to form an overall spatial conception due to their low vision, and they didn't perceive directions in real life in the same way that they did on the map. Third, regarding awareness of scale, they got to make out the concept of scale that a real size was reduced on a map when they learned about that by walking on the school ground, but they felt that scale was difficult to learn probably because it needed calculation. Besides, they complained that the mark of scale on a map was too small to discriminate due to their low vision. Fourth, perception of a contour, they were able to make out the concept of a contour when they learned about that by cutting onions and potatoes, but the interval of contours on a topographical map was too small, and it was impossible to discriminate the contours without using an aid. Moreover, they couldn't often discriminate even colored contours, since they faced difficulties in discriminating colors because of low vision. The findings of the study about map reading and inquiring into surroundings by using a map were as follows: A lot of information that were included on a map to help facilitate map reading just looked complicated for the students with low vision, and they didn't view the information as what's necessary to read the map. They only made use of what they easily understood like signs on a selective basis or relied on the name of a place written on the map. In relation to inquiring into surroundings by utilizing a map, they chose a place that they had already visited, which made it possible for them to inquire into the place by using a map with little troubles, but they preferred to rely on their own prior experiences instead of utilizing the topographical map, or preferred to ask people around based on their experiences of walking training which was provided as part of remedial education. Basically, they should be able to find out their location by reading a map to arrive at a final destination, but the students with low vision couldn't see the outline of things and eventually had difficulties in utilizing a topographical map. Finally, the findings of the study on the utilization of a map through information media were as follows: They didn't feel rejective toward computer, probably because digital equipment was easily accessible, but they complained that it was not easy for them to retrieve online maps provided by portal sites because of the complexity of the maps. For students with normal vision, it was so easy to input keywords and click a place of departure and destination with a mouse, but they took a lot of time to do that. In regard to the use of a car navigation system, a portable GPS-based equipment, the students showed some interest when they used the navigation in a car, since a digital map was intriguing. But they intended to take advantage of the sound information only, and the written information on the screen was too small, which made it inconvenient for them to use it. But they had a far more preference for the navigation than printed paper maps as the equipment offered sound information and was easy to carry.