의류 중의 미생물에 대한 소비자의 지식과 세탁습관 실태조사 분석

최해운,정찬진,박명자 服飾文化學會 2002 服飾文化硏究 Vol.10 No.6

Microorganisms living in clothing cause damage to fabric as well as unhygienic conditions with unpleasant odor for wearers. Removal or growth of microorganisms are affected by the conditions during washing and storage. The purpose of this research was to study the consumer's knowledge and habits in laundering with respect to microorganisms in clothing. For survey method, questionnaires were administered to 580 housewives, age of 20~60s living in Seoul. Employing 479 respondents, the data were analyzed by using deseriptive statistics. The results are as follows; The level of knowledge about microorganisms of clothing was high in general, but wasn't expert level. Many people had experienced damages of textiles, clothing and unpleasant odor due to microorganisms. Fabric softeners and bleaches were rarely used for disinfection but usually used for antistatic. whitening or removal of stains. There was no relationship between laundering habits the knowledge of microorganism, and experience of clothing damage by microorganism

교정용 브라켓 접착부의 피로특성에 관한 실험적 연구

최해운,김정기 대한치과교정학회 1995 대한치과교정학회지 Vol.25 No.1

본 연구의 목적은 화학중합형의 접착제(Mono-Lok^2)로 소구치에 부착된 교정용 브라켓의 전단결합강도에 기계적 및 열적 피로가 미치는 영향을 알아보기 위한 것이다. 2종의 금속 브라켓(Ormesh, Microloc)과 3종의 세라믹 브라켓(Fascination, Starfire, Transcend 2000)을 사용하였다. 100만회의 반복 비틀림과 1,000회의 thermocycling을 시행한 다음 전단결합강도를 측정하였으며 파절부위를 stereoscope와 주사전자현미경으로 관찰하였다. 본 연구의 결과는 다음과 같다. 1. 치아면에 대한 브라켓 접착계면의 전단결합강도는 Fascination 군이 20.78±5.23 MPa로서 가장 크고, Microloc 군에서 14.88±3.10MPa로 가장 작게 나타났으며, 통계적 유의성을 검증한 결과 Fascination, Starfire 군과 Microloc 군간에 유의한 차이를 보였다(p<0.05). 2. 10^5회의 반복비틀림을 가한 후의 전단결합강도는 Frscination 군이 20.19±3.45 MPa로 가장 크고 Starfire 군이 9.10±8.33MPa로 가장 작게 나타났으며, 피로시험 후 Transcend 2000군(p<0.01)과 Starfire군(p<0.05)에서 유의성이 있는 감소를 보였다. 3. 1,000회의 thermocycling 후의 전단결합강도는 Ormesh 군이 19.36±2.76 MPa로 가장 크고, Starfire 군이 11.94±6.86MPa로서 가장 낮게 나타났으며, thermocycling 후 Transcend 2000(p0.01), Microloc과 Starfire군(p0.05)에서 유의성 있는 감소를 보였다. 4. 접착계면의 파절양상은 thermocycling 시는 정적 시험군과 유사하게 나타났으나, 반복비틀림시는 Ormesh와 Transcend 2000 군에서는 모두 브라켓과 레진 계면에서, Microloc 군은 모두 레진내에서 파절되는 경향을 보였다. Fascination 군은 피로시험조건에 관계없이 법랑질과 레진의 계면에서 파절되었다. The purpose of this study is to evaluate the effects of mechanical and thermal fatigue on the shear bond strength(SBS) in orthodontic brackets bonded to human premolars with chemically cured adhesive(Mono-Loc^2, Rocky Mountain Orthodontics). Two types of metal brackets (Ormesh, Microloc) and three types of ceramic brackets (Fascination, Starfire, Transcend 2000) were used in this study. The 10^6 loadcycles of |7.4×10^2sin2πft|g·cm and the 1,000 thermocycles of 15 second dwel time each in 5℃ and 55℃ baths were acturated as mechanical and thermal stress, and SBS were measured after each fatigue test. The fracture sites were examined by stereoscope and scanning electron as follows ; 1. In static shear bond test, Fascination brackets showed the maximum SBS(20.78±3.45 MPa) and Microloc brackets showed the minimum SBS(14.88±3.10MPa). Fascination and Starfire brackets showed significantly greater SBS than Microloc brackets(p<0.05). 2. In mechanical fatigue test, Fascination brackets showed the maximum SBS (20.19±3.45 MPa) and Starfire brackets showed the minimum SBS(9.10±8.33MPa). The SBS of Transcend 2000 brackets(p<0.01) and Starfire brackets(p<0.05) significantly decreased after 10^6 loadcycles. 3. In thermocycling test, Ormesh brackets showed the maximum SBS (19.36±2.76 MPa) and Starfire brackets showed the minimum SBS(11.94±6.86MPa). The SBS of Transcend 2000(p<0.01), Microloc and Starfire brackets(p<0.05) significantly decreased after 10^3 thermocycles. 4. Failure sites of thermocycling groups were similar to those of static groups but after mechanical fatigue test, Ormesh and Transcend 2000 brackets failed at the bracket/resin interface and Microloc brackets failed within adhesive. Facination brackets failed at the enamel/resin interface irrespective of experimental condition.

手腕部骨成熟段階에 따른 頭部放射線計則學的 硏究

崔海雲,金在衡 대한치과교정학회 1987 대한치과교정학회지 Vol.17 No.1

To investigate the relationship between craniofacial growth and bone maturity of the hand wrist in normal occlusion, the author took cephalogram and handwrist radiogram of 391 students (male 192, female 199) and assessed the measurements of cephalogram according to skeletal maturity stages of the hand and wrist. In this study, four skeketal stages and 36 linear, angular measurements of the cephalometrics were selected. In hand-wrist X-ray the bones used to determine skeletal maturity were the middle phalanges of the third finger, and distal epiphysis of the radius. In cephalogram, the landmark used to measure the angle and length were N, S, Po., Ar., Go., Me., Gn., Pog., Point B, Point A, ANS, PNS, Or., U1, L1, U6, L6 etc. The results were as follows, 1. The table of mean, standard deviation, p-value from measurements were made in each group and both sex. 2. The increased measurements according to skeletal maturity were anterior cranial bese length, posterior cranial base length, ramus height, anterior facial height, posterior facial height, L1 to mandibular plane (mm), facial plane angle. In contrast to, decreased measurements were gonial angle, facial cnvexity and facial plane angle. 3. Denture pattern measurements (IMPA, FMIA, occlusal plane to Go-Gn, interincisal angle, U1 to SN plane, U1 to SN plane, U1 to facial plane, L1 to facial plane etc.) had nothing to do withskeletal maturity. 4. Skeletal maturity had close relationship with craniofacial growth, but had little to do with tooth development.

한국신문에 나타난 20세기 의복위생의 변천 분석

최해운,박명자 漢陽大學校 韓國生活科學硏究所 2003 韓國 生活 科學 硏究 Vol.- No.21

This study is to examine the changes in clothing hygiene mentioned in Korea newspapers issued for modern centennial when the rapidly changing circumstances had occurred. The research of the costume history is rather well established, however the consumer behavior of wearers have been rare studied. Therefore, we determined the wearing or using behavior of textile users by social changes according to the current of times, as newspapers reveal social environments in those days. All articles related the subject were collected from The Donga Daily News, Chosun Daily News and Maeil Sinbo and analysed and categorized by the contents. The results are as follow: 1. There were 137 articles in the Maeil Shinbo, 123 in the Donga Ilbo, and 162 in the Chosun Ilbo. Whole articles were categorized into clothing hygiene, clothing comfort, and miscellaneous textile products. There were more articles mentioned on clothing hygiene than on clothing comfort. Apparel improvement was emphasized by the social reformation before 1945. 2. The major contents of clothing hygiene was concentrated on clothing damage by moth, fungi and microorganisms or odor from the unwashed clothes during the storage in the rainy summer season. While, clothing comfort was focused on comfortable wearing methods for keeping warmth in the cold winter season. 3. More articles appeared in summer and winter. The majority of articles were about sterilization and disinfection of damaged clothes by microorganisms during clothing maintenance in summer, and enhancement of physical strength by wearing control with thermal comfort in winter. 4. Growth of textile industry, improvement in living circumstance, economic development were closely related to the clothing hygiene and clothing comfort.

手腕部骨 成熟段階에 따른 頭部放射線計則學的 硏究

최해운,김재형,홍성준 全北大學校 齒醫學硏究所 1986 전북치대논문집 Vol.4 No.1

To investigate the relationship between craniofacial growth and bone maturity of the hand wrist in normal occlusion, the author took cephalogram and hand wrist adiogram of 391 students(male 192, female 199) and assessed the measurements of cephalogram according to skeletal maturity stages of the hand and wrist. In this study, four skeketal stages and 36 linear, angular measurements of the cephalometrics were selected. In hand-wrist X-ray the bone used to determine skeletal maturity were the middle phalanges of the third finger, and distal epiphysis of the radius. In cephalogram, the landmark used to measure the angle and length were N, S, Po., Ar., Go., Me., Gn., Pog., Point B, Point A, ANS, PNS, Or., U1, L1, U6, L6 etc.. The results were as follows ; 1. The table of mean, standared deviation, p-value from measurements were made in each group and both sex. 2. The measurements increased according to skeletal maturity were anterior cranial bese length, posterior cranial base length, ramus height, anterior facial height, posterior facial height, L1 to mandibular plane(㎜), facial plane angle. In contrast to, decreased measurements were gonial angle, facial convexity and facial plane angle. 3. Denture pattern measurements(IMPA, FMIA, occlusal plane to GoGn, interincisal angle, U1 to SN plane, U1 to SN plane, U1 to facial plane, L1 to facial plane etc.) had nothing to do with skeletal maturity. 4. Skeletal maturity had close relation with craniofacial growth, but had little to do with tooth development.

대학생의 뇨pH와 정서성 및 식품기호도에 관한 연구

최운정,황혜선 서강정보대학 1989 論文集 Vol.8 No.-

This study attempted to investigate the relationships between the urinary pH, emotional state and food preference. The subjects were 55 college students living in Kwang- ju. In this study, the emotional state and food preference of the subjects were investigated through questionnaires. Also, the urinary pH of the subjects were obtained by examination. The results are summarized as follows; 1) The height and weight of the subjects were those of Korean standards for man and woman. Their uninary pH, Hb and Hct concentrations were in normal range. 2) The mean hedonic score for food preference in subjects was 2.8. The difference in food preference between male and female was not significant except for a soy bean item and protein food group that were more favored by male. The subjects favored grapes, tomatoes, cucumber, apple, strawberry in order. 3) The subjects were classified into three groups, a little acid group, neutral group and a little alkali group accoring to thein urinary pH. A little acid group answered significant high rate to the items of the emotional state, "hard to study" and "no self-confidence". 4) Foods that have significant difference between the urinary pH and food preference were sweet potatoes, bread and yoghurt but not consistent according to the urinary pH. 5) The food preference according to the emotional state showed significant difference in cereal group. "Not to talk with other" group showed low rate preference to cereal group. From the results above the relationship between the emotional stability and the urinary pH was found. On the other side, many cooking methods should be studied and nutrition oducation should be oriented to recommend an increased in take of fat & oil group, milk group and vegetable group.

세탁의 탈수와 건조과정 중 면직물의 수분전달특성 및 미생물 분석

최해운,박명자,차옥선 服飾文化學會 2002 服飾文化硏究 Vol.10 No.5

The purpose of this research was to analyze the residual water retention and to determine the number and species of microorganisms from the wet cotton fabrics in dehydration and drying process during washing. The drying rates of terrycloth and interlock knit under the rainy seasons were measured according to the dehydration and hanging methods, layers of fabric and pre-treatment agents. Microorganisms were isolated from the dried terrycloth by pure culture, and were identified by Biolog system. The results are as follow: The initial water retentions of fabrics after dehydration decreased in the order of dripping>centrifuge>squeezing method, which affected the drying rate. The drying rates were faster by increasing surface area of fabrics. There was no significant difference in drying rate among the fabrics pre-treated with detergent, or fabric softener, or cationic surfactants such as Cetyltrimethylammonium bromide(CTAB) and Benzalkonium chloride(BC). Puedomonas aureginosa was found in the fabrics treated with a powder-type detergent. On the other side, there was no growth of microorganism in the fabrics treated with a liquid-type detergent (containing antibacterial agent), CTAB and BC.

대학생의 건강상태에 대한 자각증상과 뇨pH 및 식품기호도조사

최운정,황혜선 서강정보대학 1990 論文集 Vol.9 No.-

This survey attempted to investigate self-diagnosed symtoms on health status, urinary pH and food preference of college students. The subjects of this survey were 55 college students. The subjects answered self-diagnosed symtoms on health status and food preference through the questionnaire, Urinary pH was examined. The results were summerized as follows : 1. Height and weight of subjects belonged to those of Korean standard for men and women. 2. Female subjects significantly complained about hand & feet feeling cold in comparison with male subjects. Male subjects complained of tiring easily and having a headache frequently, female subjects complained of having a headache frequently, feeling cold and hand & feet feeling cold in order. 3. The subjects were classified into three groups, a little acid group, neutral group and a little alkali group by urinary pH. A little acid group complained more than other group about getting a rough tongue, feeling drowsy, can't sleeping well and occasional dizziness, but not significant. 4. Subjects lost their appetite showed lower preference in protein and cereal food group. In case that subjects can't sleeping well showed higher preference in fat & oil group and subjects feeling occasional dizzindss showed lower preference in milk group and subjects digesting poorly & having a pain in the chest showed significantly lower preference in fruit group respectively.

친인척위탁부모의 위탁부모역할 인식에 관한 연구

정혜선,최운선 한국가족관계학회 2006 한국가족관계학회지 Vol.11 No.1

게놈 유형이 다른 무릇(Scilla scilloides comlpex)에서 FISH를 이용한 인 우성 다양성 분석

이상은,최혜운,방재욱 충남대학교 생물공학연구소 2004 생물공학연구지 Vol.10 No.2

Nucleolar dominance, an epigenetic phenomenon in which one parental set of ribosomal RNA gene is silenced in an interspecific hybrid, was investigated in different cytotype plants of Scilla scilloides complex; AA, BB, AABB, ABBB, BBBB and AABBB. To determine the loci of the nucleolar organizer regions (NORs) in metaphase chromosomes, physical mapping of 45S rRNA gene (3.8 Kb) using FISH method was applied. Two signals of the 45S rRNA gene loci were observed in both the cytotypes of AA (2n=16) and BB (2n=18). Four signals were found in tetraploid BBBB, while two and three signals were found in cytotypes of AABB and ABBB, respectively. However, AABB plants in the population of Daegukhul-do Island had four NORs in both the A and B genome. Four signals were found in pentaploid AABBB plants. The different numbers of 45S rRNA gene signals suggested the phenomenon of nucleolar dominance or amphiplasty among different cytotype plants of S. scilloides. It is speculated that inactivation of NORs on a2 chromosome in the cytotype AABB plants is the result of the amphiplastic suppression between A and B genomes.