천연 제올라이트를 이용한 생물학적 처리수의 암모니아성 질소 제거

홍지숙,홍성수,강호 忠南大學校環境問題硏究所 1993 環境硏究 Vol.11 No.-

The ammonium-ion exchange characteristics of domestic natural zeolite was investigated to remove NH4+-N in effluents from biological treatment processes. The effect of water temperature, pH and competitive cationic concentrations on the exchange capacity was examined and the results are as follows. The ammonium-ion exchange capacity was found to be 2.083 meq. NH₄?-N/g-zeolite and not influenced by water temperature, whereas reduced up to 4.2% with the increasing of pH from 7 to 9. The separation factor were increased up to 24% with the water temperature from 25℃ to 55℃. When the competitive cationic concentrations such as K?, Ca²?, and Mg²? increased from 10 to 150mg/L in the di-component systems, the selective ammonium-ion exchange capacity was decreased up to 28%. As with many other studies, the selectivity sequence were K?>Ca²?>Mg²?. The column test has shown that the natural zeolite has a self-sharpening of ion exchange independent of flow rate in the range of 5 to 15 BV/hr. In the column test, the removal efficiences of TOC, COD, PO₄-P and TP from the anaerobic digestor effluent were higher than those from the primary and secondary domestic effluents.

기업 대 기업간(B to B) 섬유거래 웹사이트 분석

홍병숙,이은진,이진연 한국의류학회 2003 한국의류학회지 Vol.27 No.1

The specific objectives of the study were as follows : 1) To investigate the composition system (design, usability and interactivity) of web sites of textile exchange of B to B 2) To examine and valuate contents and marketing (announcement, satisfaction and variety of contents) of web sites of textile exchange of B to B. The data were collected from search engine, portal sites of evaluation, direct contact, interview over the phone with web master of concerned web sites and the result of analytical valuation of web sites. The results of this study were as fellows : 1) The Dongsung trading intended to mainly use their homepage as a inside communication place by intranet network. The Daechang trading was mainly using their homepage as a tool of expansion of their outside export market. The etextiler was selling their web solutions through homepage. The texcom was offering the web place and useful informations to trading companies in Asia. 2) The texcom consisted text with little image to speed up for loading and navigation for usability of users. The Dongsung trading made intranet network for communication and exchange of informations of company inside. The etextiler offered a booking menu to inquiry in homepage. The Daechang trading tried to give good impression from the introduction page at homepage.

pH 조절에 의한 쌀세척 폐수의 처리

노홍균,김지숙,이문이,조영인 대구효성가톨릭대학교 식품과학연구소 1994 식품과학지 Vol.6 No.-

여러 pH 조건 및 키토산 농도하에서 쌀세척 폐수로부터 부유성 고형물을 효과적으로 응집, 회수할 수 있는 방법을 모색하였다. 키토산 첨가에 따른 탁도감소효과는 pH가 낮아짐에 따라 작았으며 pH 6 이상에서는 키토산 농도가 증가함에 따라 현저히 컸다. 그러나, 폐수의 탁도감소는 키토산 농도와는 관계없이 pH 4일 때 가장 효과적 이었으며 pH가 증가함에 따라 저하하였다. 쌀세척 폐수내의 부유성 고형물은 폐수의 pH를 4로 조정한 후 원심분리하므로서 가장 효과적으로 침전, 회수할 수 있었다. 이 때 탁도감소는 99% 이상을 나타내었으며, 폐수내 부유물질의 농도차와 pH 조정제로 사용된 산종류는 탁도감소에 영향을 미치지 않았다. 폐수의 탁도감소 효과는 저장기간이 길어짐에 따라 저하하였다. Treatment of rice-washing wastewater was considered under various pH levels and chitosan concentrations. Compared with the control test, addition of chitosan at the various concentrations did not noticeably enhanced turbidity reduction at pH 4 and 5, but greatly enhanced at above pH 6. However, reduction of turbidity in the wastewater, irrespective of chitosan concentrations, was the greatest at pH 4 and became lower by increasing pH. Suspended solids in the wastewater were the most effectively recovered by pH adjustment of the wastewater to 4 followed by centrifugation, with over 99% reduction in turbidity. Different concentrations of suspended solids in the wastewater and various kinds of acids used for pH adjustment did not affect turbidity reduction. Increasing storage periods of the wastewater resulted in lower reductions in turbidity.

근세 서양복식에 나타난 두식에 관한 연구

이순홍,이지숙,김정진 誠信女子大學校 生活文化硏究所 2003 生活文化硏究 Vol.17 No.-

The purpose of this study is to find the trend of European headdresses during the period of the 16^th to the 18^th century. The fashion of the headdress, which generally means hairstyle and hat, constitutes a part of the whole fashion style of a time. The fashion style itself represents an aspect of the society at the time. The headdress in the 16^th century, which was also called Renaissance period, had begun to show diversified hairstyles and hats, of men's and women's reflecting the liberal trend of the society of the period. Short hairs and beret represent men's headdress of the period; dyed hairs and various hoods represent women's headdress. The headdress in the 17^th century, Baroque period, showed somewhat exaggerated, complicated and sensitive tendency as a reflection of the trend of the period that tried to express things more artistic ways. Wigs and hats took important position in men's fashion; Fontages hairstyle and tricorn hat partly represent women's headdress. The headdress in the 18^th century, Rococo period, had partly showed the culmination of the fashion in its history in the diversity of style and pursue of beauty. The fashion in the period could almost be called the art itself. Men's wigs evolved more practical style while their hats more decorative; women's headdress became extremely beautiful decorated by corsages and plaits.

주의력결핍/과잉운동장애(ADHD) 아동의 진단도구로서 부모용 행동 평가지의 타당도 연구 : 한국아동인성검사와 아동ㆍ청소년 행동평가척도를 중심으로

김지혜,소유경,정유숙,이임순,홍성도 대한소아청소년정신의학회 2000 소아청소년정신의학 Vol.11 No.2

본 연구에서는 현재 주의력-결핍 및 과잉운동장애(Attention Deficit/Hyperactivity Disorder, 이하 ADHD)의 주요한 평가척도 중의 하나로서 이용되고 있는 한국아동인성검사(Korean Personality Inventory for Children, K-PIC)와 아동ㆍ청소년 행동평가척도(Korean Child Behavior Checklist K-CBCL)의 임상적 타당도에 대해 살펴보고자 하였다. 피검자들은 ADHD의 하위 유형 중 주의력-결핍 우세형(ADHD-I)으로 진단된 환아 11명과 과잉 행동-충동 우세형 및 복합형(ADHD-H)로 진단된 환아 23명, 우울, 불안 등 정서적 문제로 진단(신경증 집단 ; N) 받은 정신과 외래 환아 16명, 정상아동 15명 등 총 65명이었다. 먼저 각 집단별로 분산분석을 실시하였고, 각각 행동 평정 척도의 변별력을 측정하기 위하여 판별분석을 실시하였다. 이 집단들의 K-PIC와 K-CBCL 결과들에 대한 전체(omnibus) F-검증 결과, K-PIC의 과잉행동(HPR) 척도와 K-CBCL의 주의집중문제(Attention Problems, 이하 AP) 척도들은 분산분석결과 유의한 차이를 보였다. 하지만 사후검증 결과, ADHD-I 집단과 ADHD-H 집단 그리고 신경증 집단 사이에 유의한 차이를 보이지 않는 반면, 그 세 집단은 모두 정상집단과 .05 유의도 수준 하에서 유의한 차이를 나타내었다. 이러한 결과는 K-PIC의 과잉행동(HPR) 척도와 K-CBCL의 주의집중문제(Attention Problems) 척도의 경우, 기본적으로 임상군과 정상군을 구별하는데는 유용하지만 임상군내에서의 세부 진단을 위해 사용하는 데는 한계가 있음을 시사해준다. 또한 본 연구 결과 상대적으로 HPR 척도는 ADHD-H type을 감별하는 데 더 유용한 반면, K-CBCL의 AP 척도는 ADHD-I type을 감별하는 데 더 큰 강점을 갖는 것으로 보이나, HPR 척도와 AP 척도 중 어느 하나만을 사용하는 것보다는 병행하여 사용하는 것이 더 바람직한 것으로 보인다. 특히 cut-off score면에서 두 척도 중 어느 하나에서 T점수 65점 이상 상승할 때 ADHD로 진단내리는 경우, 가장 효과적으로 정분류율(true positive rate : sensitivity)과 정배제율(true negative rate : specificity)을 조화시킬 수 있는 결정규칙이 되는 것으로 나타났다. 중심 단어 : 주의력결핍/과잉운동장애 한국아동인성검사ㆍ아동ㆍ청소년 행동평가척도. This study was designed to examine the validity of HPR subscale in Korean Personality Inventory for Children(KPI-C) and Attention Problems subscale in Korean Child Behavior Checklist(K-CBCL) as diagnostic tool for Attention-Deficit/Hyperactivity Disorder(ADHD). Nineteen ADHD-1 type, twenty-three ADHD-H type, sixteen Neurosis, and fifteen normal children with the age from 6 to12 were selected based on DSM-IV, and their responses of the KPI-C and CBCL were analyzed. Omnibus F-test results showed that there were significant differences in the F scores of HPR and Attention Problems T scores(p<.05). But in Post-hoc analysis, the HPR and AP scores in three clinical groups were significantly higher than in normal group, but there was no group difference among three clinical groups(p<.05). These results shows that HPR subscale and Attention Problems subscale may be useful tools for screening clinical groups(vs normal group) but there was a limit to the clinical validity of two subscales as diagnostic tools for the subtypes of ADHD. KEY WORDS : ADHDㆍKPI-CㆍK-CBCLㆍHPRㆍAttention problems.

농촌지역 노인들의 우울증상에 관련된 요인들의 특성

송미숙,전기홍,송현종,김정은,박승구,신상건,이동훈,정성현,최연주,최완철,최민규,황재철,홍지만 아주대학교 1997 아주의학 Vol.2 No.2

This study was performed to identify risk factors for depression among the elderly in a rural area. A survey was done for the elderly living in Gosam-myenn, Ansung-kun during the period of July 28, 1997 and July 30, 1997. Demographic and sodoeconornic characteristics, and functional and health Status were assessed using a structured questionnaire, and the level of depression was measured by GDS score. The data obtained were analyzed by frequencies, percentage, t-test, ANOVA, and multiple regression, and the results were as follows: 1. The total sample consisted of 133 elderly. Of them, 47 elderly (35.4%) showed significant depressive Symptoms. 2. The GDS score was the highest for the group over 85 years of age (p < 0.05). Those living alone or widowed showed lower GDS score than those living with someone or married (p < 0.05). 3. The GDS score was the highest in the absolutely dependent group, followed by the partially dependent group, and the independent group (p < 0.01). The elderly who perceived their health Status as excellent showed the lowest GDS score. In contrast, those who had more than five chronic diseases showed the highest GDS score. 4. The elderly receiving financial and emotional support from their family or friends showed lower GDS score compared to those without any support. 5. The economically dependent group showed higher GDS score than that of independent group. 6. The elderly who involved in leisure activities showed lower GDS score than those without any involvement. 7. In terms of risk factors for depression, we found that perceived health Status, subjective economic Status, leisure activities, living arrangement and financial support were inversely associated with GDS score, whereas labor support was positively associated with GDS score. Based upon the above findings, this study suggests that these risk factors for depression in the elderly should be taken into consideration for a comprehensive mental health program for the elderly living in the rural area.

TV의 매체적 속성과 프로그램의 연관성 연구 : TV코미디 프로그램의 공감각적 특성을 중심으로 Focusing on Synesthetic Characteristics of TV Comedy Programs

하효숙,양지윤,홍예진 서강대학교 언론문화연구소 2002 언론문화연구 Vol.18 No.-

2.9% 과산화수소를 함유한 부착형 미백제의 임상적 효능과 안정성에 관한 연구

박은숙,성소래,홍성태,김지은,이소영,황수연,이신재,진보형,손호현,조병훈 大韓齒科保存學會 2006 Restorative Dentistry & Endodontics Vol.31 No.4

2.9%의 과산화수소를 함유한 시험용 부착형 미백제(Medison dental whitening strip, Samsung medical Co.,Anyang,Korea)를 실험군 피험자 23명, 시험용 미백제에서 과산화수소를 제외한 동일한 제재를 대조약으로 대조군 피험자 24명에게 매일 1시간 30분씩, 2주간 적용하여 임상적 효능과 안전성을 평가하였다. 미백 효과는 Shade Vision, Chroma Mete 및 Vitapan classical shade guide를 이용하여 색변화를 측정하여 다음과 같은 결론을 얻었다. 1. 실험군에서의 전체 치아의 색변화량(ΔE^(*))은 세 가지 측정법에서 모두 대조군에 비해 통계적으로 유의한 차이를 보였고 (p < 0.05). 쉽게 인지할 수 있는 정도였다. 2. 색변화는 색좌표 상에서 명도의 증가와 녹색조 및 청색조로의 변화에 의해 얻어졌다. 3. 치아별로는 어두운 견치의 색변화량이 가장 컸고, 측절치, 중절치 순으로 감소하였다. 4. 47명의 피험자 중 5명이 경도의 과민증을 경험하였으나 곧 완화되었다, 치은염증지수와 전기치수검사 결과 시험 전후에 차이가 없어 안전성을 확인하였다. This study evaluated the effectiveness and safety of an experimental bleaching strip (Medison dental whitening strip, Samsung medical Co., Anyang, Korea) containing 2.9% hydrogen peroxide. Twenty-three volunteers used the bleaching strips for one and a half hour daily for 2 weeks. As control group, the same strips in which hydrogen peroxide was not included were used by 24 volunteers with the same protocol. The shade chang (ΔE^(*), color differnce) of twelve anterior teeth was measured using Shade Vision (X-Rite Inc., S. W. Grandville, MI, USA), Chroma Meter (Minota Co., Ltd. Osaka, Japan) and Vitapan classical shade guide (Vita Zahnfabrik, Germany). The shade change of overall teeth in the experimental group was significantly greater than that in the control group (p < 0.05) and was easily perceivable. The change resulted from the increase of lightness (CIE L^(*) value) and the decrease of redness (CIE a^(*) value) and yellowness (CIE b^(*) value). The shade change of individual tooth was greatest in canine, can smallest in central incisor. The safety of the bleaching strip was also confirmed. 〔J Kor Acad Cons Dent 31(4):269-281, 2006〕

Water glass로부터 ZSM-5의 합성

우훈희,홍지숙,서정권,이관영,이정민 한국공업화학회 2002 응용화학 Vol.6 No.2

In order to seek optimum conditions for ZSM-5 formation in the absence of organic template,the effects of both starting composition and water glass as silica source were examined. Water glass was most inexpensive among silica sources, but this was difficulty in reactant control because of contained much alkali ingredient, Considering environmental problem and economic performance,chose alkali drawing-out method to use methanol newly to remove alkali ingredient of waterglass. Characterization of ZSM-5 was carried out by means of XRD, SEM.

국내의 치매관련 간호연구논문 분석

김혜영,홍춘실,오경옥,이선영,정현숙,이지혜,남미라 충남대학교 간호과학연구소 2002 충남대 간호학술지 Vol.5 No.1

The purpose of this study was to analyze the trends of korean nursing research on dementia and to suggest the direction of future research. A total of 52 nursing research articles published from 1992 to 2001 were selected for this study. These articles were analyzed in a systematic way including time and source of publication, design of research, type of subjects, variable and tool of measurement, intervention outcome of experimental research, and theme of qualitative research. The results were as follows : 1. The nursing research about dementia has appeared since 1992 and increased rapidly since 1998. 2. Eighteen of 52 studies were composed of dissertation of graduate school, and the research designs were mostly quantitative. There were 36 nonexperimental research, 11 experimental research, and 5 qualitative research designs. 3. The subjects of studies were mostly the caregivers of dementia patients as 33 of 52 studies. 4. Most measurement instruments used for research were developed by researcher him/herself, or redesigned and translated into korean as the original foreign version was used. 5. In correlational research, the trend was to study physical conditions in relation to activities of daily living and functional status in dementia patients and psychological conditions in relation to burden, quality of life, depression, and stress in their families. 6. 2 methodological research were development of assessment tool of dementia patients in community, and assessment of burden of caregiver. 7. In experimental research, subjects were all dementia patients, and interventions were music therapy(5), light therapy(2), education program, cognitive stimulation training, validation therapy, hand massage, reminiscence, horticultural therapy, and art therapy. 8. Theme of qualitative research was all caring experience of family. There were 3 phenomenologic methodology, l ethnography and l case study. Based on these findings, the following recommendations were made: 1. It' s necessary to develop a reliable and valid instrument to measure the characteristics of dementia patients and family caregivers of dementia patients. 2. Experimental study should be repeated to prove the effect of intervention for dementia patients and their family.