야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

LNG 저장 탱크 지중연속법 품질시험

김영환,조철현,임성진 한국비파괴검사학회 2003 한국비파괴검사학회지 Vol.23 No.2

지중식 LNG 저장 탱크의 지중연속벽(슬러리 벽체)의 시공 품질 및 건전성을 평가하기 위하여 비파괴 진단을 수행하였다. 이를 위하여 지중 연속벽의 9군데 측점을 선정하여 각각의 측점에서 탄성파 충격-공진법으로 벽체의 두께를 측정하였고, GPR을 사용하여 철근의 배치 간격을 조사하였다. 또한, 음속과 반발경도를 측정하여 압축강도를 추정하였다. 그 결과로 벽체의 두께는 150㎝ 이상으로 설계값을 만족하고 있으며, 철근의 배근 간격도 설계값과 잘 일치하였다. 콘크리트의 압축강도 추정값은 기준값보다 훨씬 크게 나타나서 전체적으로 구조물의 시공 품질은 양호한 것으로 판단된다. Nondestructive testing was carried out in order to evaluate the structural integrity and construction quality of the slurry wall of the underground LNG storage tank. 9 test points were selected, and the wall thickness, rebar spacing, and compressive strength of the slurry wall were evaluated by stress wave impact-resonance method, GPR, sonic velocity, and rebound testing, respectively. As results, the wall thickness, rebar spacing and estimated comnpressive strength satisfy the design criteria.

내염성 식물 Suaeda japonica Makino에서 염 스트레스와 관련된 단백질과 색소의 확인 및 특성화

김영철,김진환,정상호 목원대학교 자연과학연구소 1999 自然科學 硏究論文集 Vol.8 No.-

Suaeda japonica Makino is a halophytic plant which lives in mudflat at intertidal zone of western coastal area in Korea. The plant which shows purple color in leaf and stem is submerged in seawater during the most of its life. To investigate the basic mechanism(s), how the plant was well adapted for survival in strongly saline habitats, we have analyzed the saline stress responding proteins and the purple pigment accumulated in this organism by comparison two plants, a seawater-living S. japonica . Seawater living plant-specific five proteins such as 86 kDa, 40 kDa, 22 kDa, 18 kDa, and 7kDa were identified by SDS-PAGE, and the two proteins having relatively lower molecular weight and expressing highly(22 kDa and 7 kDa) among them were focused in the present study. The N-terminal amino acid sequence of 22 kDa read as Tyr-Asp-Ile-Phe-Asp-Gly-Asp-Gly-Glu-Pro-Leu-Arg-Asn reveals very acidic(pl 3.84) and 60% polarity. It suggests that 22 kDa protein may be soluble in cytoplasm. The amino acid residues show 54.545% identity with Solanum tuberosum PKPI(patato Kunitz-type protease inhibitor) and 63.636% identity with S. tuberosum cysteine proteinase inhibitor 7 precursor, implying that the protein may play a role in defence mechanism against salts as well as against insects and pathogens, if the 22 kDa protein belongs to these inhibitor families. The N-terminal amino acid sequence of 7k Da read as Ala-Ile-Thr-X(Cys?)-Gly-Gln-Val-Thr-Ser-Lys-Leu-Ala-Pro-X(Cys?)-Met shows basic(pI 8.80) and 40% polarity. These amino acid residues show 73% identity with Nicotiana tabacum Ltpl(lipid transfer protein). Especially, the starting N-terminal amino acid residues of the 7 kDa protein was matched exactly in sequence order with N. tabacum Ltpl N-terminal amino acid sequence if the preceding signal peptide of Ltpl protein is excluded. This result suggests that 7 kDa protein should be a lipid transfer protein and may play an important role in plant defence mechanism against salt-stress as well as wax or cutin deposition in the cell walls. The purple pigment of seawater living S. japonica was extracted in water, but not in any other solvents such as methanol, ethanol, acetone, ethyl acetate, ethyl ether, chloroform, benzene, and hexane. The pigment shows a maximum absorbance at 545 nm and its Rf value is approximately 0.2 on 2-D silica gel TLC plate, suggesting that it may correspond to the pigment anthocyanin. Since the purple pigment is accumulated in abundance in seawater living S. japonica and disappeared completely in freshwater living S. japonica, it should be related in salt tolerance in this halophytic plant.

Mn₃O₄의 합성과 CO₂흡착에 관한 연구

김승호,박영구,고재철 三陟大學校 2000 論文集 Vol.33 No.2

In this study, we synthesized Mn₃O₄ by the different equivalent ratio, investigated XRD, SEM, TG-DTA, BET, and the amount of adsorption of carbon dioxide. As the results, we surveyed that XRD main peak was Mn₃O₄, some peak was MnO₂ and Mn??O??, SEM was globular-shape of the majority, some neele-shape, TG-DTA had weight-loss from 100℃ to 400℃ and endothermic reaction over 400℃, BET was 14.16∼29.63㎡/g and the amount of chemisorption of carbon dioxide was 2.885∼19.628cc/g. Optimal equivalent ratio was 1.00 to the physi-chemisorption of carbon dioxide.

活性炭 生物膜 工法에서 Cr(Ⅵ) 溶解 廢水 處理

양영철,장성호,성낙창,김수생,김철 동아대학교 공과대학 부설 한국자원개발연구소 1995 硏究報告 Vol.19 No.1

This study has been carried out to provide the basic data then biofilm with activated carbon was used for (Cr(Ⅵ)-containing wastewater treatment. The results from this study are follows; 1. Substrate removal rate constants were 0.451∼0.861 at A reactor, 0.462∼0.899 at B reactor and 0.418∼1.033 at C reactor. 2. CR(Ⅵ) removal efficiencies with dosage of CR(Ⅵ) indicated below 40% when CR(Ⅵ) dosage was over 10㎎/l at A and B reactor, and over 20㎎/l at C reactor, no relation with volume loading rate. 3. COD removal efficiencies with dosage of CR(Ⅵ) were changed when CR(Ⅵ) dosage was 10㎎/l in case of 1.6, 3.2㎏·COD/m³day at A reactor, was 20㎎/l in case of 1.6, 3.2㎏·COD/m³·day at B reactor, was 25㎎/l in case of 1.6, 3.2㎏·COD/m³·day at C reactor. 4. NH₄^(+) -N removal efficiencies with dosage of CR(Ⅵ) were changed when CR(Ⅵ) dosage was 1㎎/l, 10㎎/l at A, B reactor, not related with volume rate, was 20㎎/l in case of 3.2, 4.8㎏·COD/m³·day at C reactor.

사료제조공정에서 발생된 악취처리에 관한 연구

박영구,김승호,최선도,고재철 三陟大學校 2000 論文集 Vol.33 No.2

Methods for the treatment of foul odor was physical, chemical and biological. In this study, we utilized biofilter for the treatment of foul odor. Importance factors of a microbe is nutrients, temperature, moistrure and pH. As the results, it was found that matter of the odor was trimethylamine, removal rate(η(%)) fo (CH₃)N₃ appeared 19.7%∼96.5%(site-1), 20%∼95.5%(site-2) after treated to the biofilter, and tended to decrease from 7 months later by a biofilter compaction. Also size of the tree chip was 2cm, degree of the foul odor was degree of 3∼4, propriety temperature was 20∼40℃, the rate of contained moisture was 60∼70%, acidity was pH=8.

서울시 아동을 대상으로 한 주의력결핍과잉행동장애의 선별기준에 대한 연구

양영희,김재원,김예니,조수철,김붕년 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.3

Objectives : The purpose of this study is to investigate a cut-off value for screening children with ADHD in community based sample using the Korean Child Behavior Checklist (K-CBCL) and the Korean ADHD Rating Scale (K-ARS). Methods : Children aged 6 to 8 (n=661) participated in this study. The K-CBCL and the K-ARS were used as the screening instruments. Diagnoses were confirmed through the Diagnostic Interview Schedule for Children Version Ⅳ (DISC-Ⅳ). Results : Of the 189 subjects who underwent the DISC-Ⅳ, 26 subjects were diagnosed as ADHD. In the K-CBCL, scores in the attention problems, externalizing problems and total behavioral problems were positively correlated with the total score of the K-ARS. The K-ARS-Parent version (K-ARS-P) and above three scales in the K-CBCL showed significant screening validity in the ROC curve analysis. The reasonable level of sensitivity, specificity, and negative predictive value were obtained in the total scores ≥90^(th) percentile in the K-ARS-Parent and ≥60T scores in the K-CBCL attention problems. The optimal level of specificity, positive predictive value and negative predictive value were obtained when combined the K-CBCL (≥60T scores in the attention problems and ≥63T scores in the total problems) and the total scores ≥90^(th) percentile in the K-ARS-P. Conclusion : The combined use of the K-CBCL and the K-ARS-P may serve as useful screening methods for ADHD children.

질소산화물 제거를 위한 V₂O_5/TiO₂촉매 코팅된 다공성 실리카 필터의 제조 및 특성

한요섭,고재철,박영구,김승호,박재구 三陟大學校 2005 論文集 Vol.38 No.-

The prepared porous support from silica coated with TiO₂ and V₂O_(5) catalysts were studied by selective catalytic reduction of NOx with NH₃ The effects of V₂O_(5) loading, reaction temperature, space velocity and filter-type(disk and sphere) on the characteristics of NOx reduction with NH₃ were mainly investigated. At space velocity 6000h^(-1), reaction temp rature 350℃, V₂O_(5) loading 6.Owt.% and oxygen content 5%, the NOx reduction was higher to about 91%. The efficiency of porous silica on V₂O_(5)/TiO₂ catalytic disk-filter was higher than that of the V₂O_(5)/TiO₂ catalytic sphere-filter. It has been experimentally observed that the V₂O_(5)/TiO₂ catalytic disk-filter has strong resistance of gas flow.

보리를 이용한 가공식품 제조와 그 특성

고정은,양영택,송살철,김정숙,한동휴,고정삼 濟州大學校亞熱帶農業硏究所 1996 亞熱帶農業硏究 Vol.13 No.-

요약 제주산 보리차 및 보리음료 제조를 위한 원료의 일반성분과 무기물을 분석하였으며, 상품화 가능성을 관능검사를 통하여 평가하였다. 일반성분 및 무기물의 분석결과, 원료의 종류에 따라 다소의 차이는 있었으나 대체적으로 표준분석값과 유사하였다. 보리차의 경우 시판하고 있는 회사제품과의 차별화를 위하여 볶음결명자, 볶음옥수수, 살구씨 등을 혼합한 형태의 보리차 기호성을 검토하였다. 볶음보리만을 이용한 보리차보다는 볶음보리에 볶음결명자, 볶음옥수수, 살구씨를 16 : 1.5 : 2 : 0.5의 비율로 각각 첨가한 보리차를 가장 선호하였다. 그리고 볶음 정도에 따라 추출한 보리차의 색깔이 차이를 나타내었으며, 시판하는 보리차의 흡광도가 420nm에서 0.369인데 비하여 볶음정도가 낮은 시제품의 흡광도는 0.182로서 약간 연한 색깔을 선호하였다. 보리음료의 경우, 미숫가루만을 사용할 때는 볶음보리가루 : 물을 1 : 9로 하고 여기에 첨가하는 설탕농도를 9%로 하는 것에 가장 좋은 선호도를 나타내었다. 그러나 볶음보리가루만을 사용한 경우는 향미가 약하여 기호성가 떨어진 반면 미숫가루 : 볶음찹쌀가루 : 볶음콩가루 : 볶음참깨가루를 9 : 0.5 : 0.3 : 0.2의 비율로 혼합한 혼합가루 10g에 설탕 6g의 비율로 사용하는 경우 기호성이 가장 좋았다. 또한, 대용식인 조식시리얼로 미숫가루를 사용하는 경우 미숫가루 : 물을 10 : 4의 혼합비율로 하며, 미숫가루 : 볶음찹쌀가루 : 볶음콩가루 : 볶음참깨가루를 8 : 0.5 : 1.0 : 0.5의 비율로 혼합한 경우 기호성이 가장 좋았다. 미숫가루의 상품화를 위해서는 기호성의 향상을 위한 음용형태에 따른 배합비율의 최적화, 포장디자인 및 포장방법의 개선, 차별화를 위한 홍보 등이 필요할 것으로 판단된다. Summary Chemical analysis of barley and other cereals related to tea and beverage products, and sensory evaluation were investigated. Proximate compositions and inorganic elements contents of raw materials produced in Cheju were similiar to standard values. Blending at the ratio of 16 roasted barley, 1.5 roasted Cassia tora seed, 2 roasted corm, and 0.5 apricot seed was the better, compared to roasted barley only, for barley tea on sensory evaluation. According to the degree of roasting, the color of extracts with boiled water was different. Absorbance at 420nm of commercial barley extracts was 0.369, compared to the value of 0.182 on sample in this experiments. For barley beverage, 10% of roasted barley powder added 9% of sugar was the vest on sensory evaluations However, blending at the ratio of 9 roasted barley powder, 0.5 roasted glutinous rice powder, 0.3 roasted soybean powder, and 0.2 roasted sesame powder, added 6% of sugar, was the best, compared to roasted barley powder only, for barley beverage on sensory evaluations. On 40% of roasted barley powder only, for morning cereals, blending at the ratio of 8 roasted barley powder, 0.5 roasted glutinous rice powder, 1.0 roasted soybean powder, and 0.5 roasted sesame powder was the best on sensory evaluations, compared to roasted barley powder only.

자외선 조사에 의한 피부조직 단백질의 산화에 관한 연구

차승훈,정영도,이승철,안봉환,김영표,이민화 한국노화학회 1991 한국노화학회지 Vol.1 No.1