Aluminum Isoproxide의 합성과 그 Sol의 특성

홍성수,이환홍,노재성,조헌영 忠南大學校 産業技術硏究所 1991 산업기술연구논문집 Vol.6 No.2

Aluminum isoproxide was synthesized by aluminum and isoproplyl alcohol and hydrolyzed to make alumina sol. The collodial stability of alumina sol was evaluated by measuring zeta potential. A high purity aluminum isoproxide(>99%) was obtained from aluminum powder, foil and flake. The particle size of aluminum powder was smaller than 250㎛ to obtain 80% yield and up within 6 hours reaction time. The alumina sol was highly stabilized in the presence of acid medium at a hydrolysis condition of pH 3 and water/alkoxide=150 at 65℃. The particle size of alumina powder was mostly under l㎛ after sintering at 1200℃ for 1 hours.

일 농촌지역에서 발기부전의 유병률 및 상관 요인

홍진표,송해철,이무송,이창화,안준호,한오수,안태영,김성윤 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The purpose of this study was to investigate the prevalence of erectile dysfunction (ED) in a rural area of Korea and to examine the relationship between the prevalence and correlates of subjects. Method : This study was done as a part of the chronic disease survey of rural area by the Asan Foundation. Among 30 years or older population from Jung Eup, a rural area of Korea, 711 male subjects were sampled using a cluster probability sampling method. Trained interviewers visited and interviewed subjects aged 30 years or older with a structured interview. ED was categorized as 'none', 'mild', 'moderate', or 'severe' according to the ability to 'attain and/or maintain an erection satisfactory for sexual intercourse'. Response rate was 54.3% (N=386). Results : The age weighted prevalence of ED was 27.2% (minimal 14.1%, moderate 7.6%, severe 5.5%). Prevalence and severity increased with age. Liver disease and underweight were significantly (p<0.05) associated with ED. Smoking seemed to be correlated with ED, but did not reach statistically significant level. Conclusion : ED was highly prevalent in the rural community of Korea. Medical, sociodemographic, and lifestyle variables associated with ED may alert physicians to patients at risk for ED and offer insight to its etiology.

가연성 화학약품 분진(Salicylic acid, terphtalic acid, phenolic resin 및 무수 phtalic acid)의 폭발특성에 관한 연구 : salicylic acid, terphtalic acid, phenolic resin and anhydridephtalic acid

홍성수,노재성 충남대학교 공업교육연구소 1993 論文集 Vol.16 No.1

The explosion characteristics of combustible chemical powders, such as salicylic acid, terphtalic acid, anhydridephtalic acid, phenolic resin, was investigated. The combustible chemical powders have a little difference in explosion characteristics with those of gases. These chemical powders need a special care at industry because the minimum ignition energy of the examined chemical powders was very low. In the presence of inert dust(talcum), the explosion pressure was decreased with the increasing of the added amount of talcum except phenolic resin. The maximum rate of explosion pressure of four chemicals was effectively decreased by inert dust.

靑少年의 身體的 發育發達에 關한 硏究

洪寬伊,文炳容,盧成圭,吳壽一 江原大學校附設體育科學硏究所 1987 江原大學校附設體育科學硏究所論文集 Vol.- No.12

This study in to know the development transition of juveniles age(10∼17 of ages) about the relationship of natural developmental, patterns, according to sexes, ages and regions by vertical and crossing methods. To analyze the degree developed through intended training and its related meaning, the objects are chosen from 4 regions(urban, farming and mining community etc). The objects for vertical study are 2000 persons : crossing study, 6400 : experimental study, 320 The results through analyzing statistical date by electronic computer, based on the materials investigation, measurement and experiment, from July 1 to Nov. 30 1987, are following 1. The aspect of the form This report was represented that the body measurement value of the height, the weight, the chst-girth, and the sitting height was continuously increased the growth development till 10∼17 age, according to increased with age, and the cross-sectional change have a tendency both for male and female to excess crossing change. 2. The aspect of the function (in the viewpoint of action fitness element) 1) This report was showed that the fitness of the male continuously in creased till 17 ages, and that of the female in distinctly decreased or maintained after 14 ages. 2) The exercise items prevailed the crossing change were the speed (100M sprint), the power (throwing) and endurance of total body (longtime running (female)) And the exercise items prevailed the vertical change were the power (long jump), endurance (muscle endurance : chinning, chin hanging, sit-ups, endurance of total body : 800M and 1,000M lony-time running) 3. The results through experiments 1) Grip strength (1) Maximal strength The development of strength is almost parallel to the development of body and it shows rapid development speed, especially, in the adolescent juveniles. (2) Muscle Endurance There are outstanding development in both sexes. Because the development speed become slow after being 15 of ages, applying muscle endurance training from being 14 of ages is effective. 2) Long-time running In both sexes the rate of increase is high after they are 15 years old (or after being of 15 ages). To anticipate the good effect of training of long-time running, therefore, it is effective to apply the training after they are 15 years old (or after being 15 ages)

고등학교 남자유도 선수들의 경기 중 기술 분석

홍성관,오수일 江原大學校附設體育科學硏究所 2004 江原大學校附設體育科學硏究所論文集 Vol.- No.27

This research has an goal to offer useful materials for beginner Judo players who are middle&high school students and coaches. Furthermore, it has an prupose to analyze using technique during matches which men Judo players who are high school students and I present research question like this. I established with research question that first, difference of each weight players who use technique, second, difference of using technique about players who won a prize, players who didn't win a prize. I would like to notice this researfh's investigative subject that the 3rd Tamragi Judo contest, the 32nd national Judo league of springtime, YMCA Judo contest etc. In addition, I made an object participated 294 players who are high school students for 2003∼2004 season. I also analyzed contest recorded paper which Korea Judo association, research assistant practiced video tape and I made an check paper by myself. I used χ^(2)verification for statical method, I made notice level is α=.05. I made an conclusion with research method & procedure like this. First, it showed an order Ashi-waza, Te-waza, Koshi-waza, Renraku-waza, which total tried 811 times technique in all weight. Second, it showed an order Daki-age, Seoinage, Harai-goshi, Uchi-mata in detail technique otherwise most few used technique was Yoko-guruma. Third, it showed the difference of each weight which showed an order Ashi-waza, Te-waza in -55kg, -66kg, - 77kg, Ashi-waza, Koshi-waza in -90kg, -100kg,+100kg. So it means the difference of using technique between light weight player and heavy weight player. Fourth, it showed the difference of technique of players who won a prize that showed an order Renraku-waza, Daki-age, Uchi-mata, Seoinage, Osaekomi-waza.

주물용 폐규사의 특성과 재활용 방안

노재성,권혁무,조헌영,홍성수 忠南大學校 地域開發硏究所 1993 地域開發論叢 Vol.5 No.-

ALC 技術現況과 시멘트 슬러지를 再活用한 ALC의 製造

盧載星,洪性秀,李範載 忠南大學校 地域開發硏究所 1992 地域開發論叢 Vol.4 No.-

저급 벤토나이트를 이용하여 합성한 4A형 제올라이트의 응용

노재성,홍성수 忠南大學校 産業技術硏究所 1988 산업기술연구논문집 Vol.3 No.2

Amorphous silica produced from low grade bentonite B₁by acid treatment was used for zeolite synthesis. The zeolite 4A was used for detergent-use. The results are summerized as follows. (1) When the condition of water hardness was 40℉h, water temperature was 30℃ and the stirring rate of water was 200rpm. the cation(Ca) exchange capacity of synthetic zeolite was observed as 307㎎ CaCO₃/ g zeolite for fifteen minutes. The amount of Ca ion exchanged by zeolite was more than 95 percent within three minutes. (2) The brightness of the synthetic zeolite was between 91 and 93. The median particle size of the synthetic zeolite was 3.0㎛. (3) In differential thermal analysis, the dehydration of the synthetic zeolite was detected between 35℃ and 500℃, lattice transformation take place at about 800℃. In thermal gravimetric analysis, the weight loss of the snythetic zeolite was 20.94 percent by dehydration between 33℃ and 511℃.

大田市 可燃性 産業廢棄物 最適 處理方案에 關한 基礎 調査硏究

廬載星,趙憲英,洪性秀,姜浩 忠南大學校 環境問題硏究所 1992 環境硏究 Vol.10 No.-

A feasibility study for the treatment of flammable industrial solid wstes generated in Taejon was investigated. The results are summarized as follows. 1. The yearly generation rate of the industrial solid wastes from 124 companies was estimated to be 140,000 tons. 2. The flammable wastes occupied 66.2% of the total industrial solid wastes. They consisted predominently of synthetic resins and the sludges from paper and lather industries (88.3% out of the flammable industrial solid wastes). 3. Two rotary kiln incinerators to deal with 100 tons per day each were recommended. And an economic analysis for the operation of the incinerators was found to be promising.

Space Supervision을 이용한 치성 정중선 변위의 교정

김수연,최영철,박재홍,최성철,김광철 大韓小兒齒科學會 2007 大韓小兒齒科學會誌 Vol.34 No.4

상하악 중절치 간의 정중선 변위는 골격성 변위,치성 변위 및 골격성과 치성의 복합적 변위 등으로 구분된다. 그 중 치성 정중선 변위는 치열의 발육시기에 따라 다양한 방법으로 치료 방법을 선택할 수 있다. 특히 혼합치열의 초기에는 치열 내에 존재하는 공간의 조건,인접 영구치의 맹출 시기 또는 맹출 방향에 따라 영구 절치들의 위치가 자발적으로 변화,개선될 수 있다. 따라서 이러한 치아의 생리적 이동을 이용하여 특별한 교정장치의 이용 없이 치열 내에서 치아의 배열을 개선시킬 수 있다. 본 증례보고에서는 특히 유견치의 발거 시기 및 좌우 유치의 발거 순서 등을 이용하여 치성 정중선 불일치를 개선시킨 증례틀을 보고하고자 한다. A midline deviation is divided into three types, such as a skeletal midline deviation, a dental midline deviation, and a combination. Among them, the midline deviation which appear in the early mixed dentition without any skeletal problem can be managed differently by the stage of dental development. The location of the permanent incisors can be improved without using artificial force in consideration of the condition of the space, the eruption timing or the eruption path of the adjacent permanent teeth in early mixed dentition, especially when the permanent incisors are erupting. Therefore. the space supervision technique, which can have the teeth align themselves utilizing physiologic events such as sequence or timing of the eruption of permanent teeth, can be an alternative to orthodontic movement. This case report describes midline deviation improvement by space supervision.