계획된 행동이론을 적용한 사업장 여성근로자의 운동실천 차이 분석 : An Application of the Theory of Planned Behavior

배상수,이훈재,이창옥,조희숙 韓國保健敎育.健康增進學會 2003 보건교육건강증진학회지 Vol.20 No.1

The objectives of this study were to verify the determinants of regular exercise behavior in female worker by applying a modified Theory of Planned Behavior. The variables investigated for this study were health status, health concern, health habit, attitude (7 items), subjective norm (3 items), and perceived behavioral control( 5 items). Data was collected from 204 female workers using a self-administered questionnaire. The results of this study were as follows. 1) Regular exercise behavior was significantly influenced by perceived behavior control for time, pleasurable attitude, and the subjective norm of their colleagues. 2) A modified Theory of Planned Behavior is particularly useful in explaining exercise behavior of female workers. We suggest that health care providers should focus on not only attitude and social norms but also perceived behavioral control in order to improve the exercise behavior of female workers.

콘크리트의 고온 가열연구

裵在欽,閔丙勳 수원대학교 산업기술연구소 1997 산업기술연구소논문집 Vol.12 No.-

A concrete heating study was performed and analyzed for a preliminary work of concrete-sodium reaction study as one of liquid metal reactor safety program. A concrete heating experimental facility was set up, and operated. Utilizing this apparatus, the real-time distribution of temperature profile of a concrete test article was measured. The evaporated water was also collected and measured its volume in this experiment. It was found that the amount of evaperated water was about 2% of the concrete weight at 400℃ and that the thermal diffusivity of concrete was 0.3 to 1.9㎠/hr in this experimental range.

반건식탈황법을 이용한 SOx/NOx의 제거에 관한 연구

박재찬,배병훈,임경택 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

This study has been carried out to investigate the variation of removal efficiencies with SOx/NOx concentrations and the improvement of removal efficiencies with additives addition. The results are summarized as follows ; 1. For the SOx cases, the removal efficiencies of 95%, 95% and 90% were achieved at 300ppm, 1000ppm and 1500pm respectively with 15 Ca/S stoichiometric ratio in SDA-FF Process 2. For the NOx cases, the removal efficiencies of SDA were obtained extremely low levels. But the removal efficiencies of SDA-FF were achieved approximately 50% regardless of Ca/S stoichiometric rations and concentration loadings. 3. For the cases in variation of NOx removal efficiencies with additives addition, the improvement of removal efficiencies were obtained 5%, 10% by NaOH, NH₄Br respectively with 1.0 Ca/S stoichiometric ratio in SDA-FF.

실질적인 원격교육 시스템과 그 원형 구축에 관한 연구

박대훈,남중헌,배재학 울산대학교 1999 공학연구논문집 Vol.30 No.2

본 논문의 주제는 실질적인 원격 교육 시스템의 설계와 그 원형 구축에 관한 연구이다. 원격 교육 시스템에 관한 다양한 장점이 있지만 그것을 설계하고 구현하는 일선교사들에게는 전문성의 부족으로 어려운 실정이다. 본 논문에서는 Lotus Domino/Notes에서 제공하는 웹 페이지 설계 기능과 native 웹 개발 도구들을 비교하고, 그것이 일선교사들에게 원격 교육 시스템을 설계하고, 관리하는데 얼마나 용이한가를 연구하였다. This paper is concerned with the design and implementation of a practical distance learning system. Even though there are various advantages of distance learning systems, it is too difficult for the teachers to design and implement them. In this paper, the followings are studied: (1) comparing native web publishing tools with the web page design facilities which Lotus Domino/Notes provides, and (2) how much easier it will be with the facilities for teachers to design and manage a distance learning system.

신경섬유종증 환자에게서 발생한 특발성 혈소판 감소증 1예

권세훈,김형호,강지인,장재혁,원경준,장재현,김상용,배학연 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Idiopathic thrombocytopenic purpura is a disease characterized by thrombocytopenia in peripheral blood with positive anti-platelet antibody titer, no splenomegaly, the presence of megakarocyte. The causes of idiopathic thrombocytopenic purpura were usually related to autoimmune disease, infection and drugs. A 46-years-old man was admitted for evaluation of abdominal mass. He has many cafe-au-lait spots and nodules in almost skin for 30 years. Several years ago, he palpated mass in Lt. inguinal area. hIe has known the abdominal mass after checking abdomen CT in local clinic and visited our hospital for evaluation of abdominal mass. At admission, laboratory tests showed hemoglobin 12.5 g/dL, hematocrit 38.4 %, WBC 5,460 /㎣ (neutrophil 64.5%, lymphocyte 21.7%, monocyte 4.1%, eosinophil 5.4%), reticulocyte 0.7%, Platelet 52,000 /㎣, total protein 6.51 g/dL, albumin 3.80 g/dL, alkaline pohsphatase 161 IU/L, AST 110.7 IU/L, ALT 64.9 IU/L, total bilirubin 0.44 ㎎/dL, BUN 18.4 ㎎/dL, creatinine 0.79 ㎎/dL. Peripheral blood smear showed normocytic normochromic anemia, thrombocytopenia. Bone marrow aspiration smear showed normoplastic myeloid and erythroid precursor. The bone marrow biopsy section shows normocellular marrow (35%) for his age and mildly increasing myeloid cell lineage. We have experienced a case of idiopathic thrombocytopenic purpura in a patient being in neurofibromatosis and therefore reporting it with documentary records. 저자들은 신경섬유종증 환자에서 특별한 원인을 발견할 수 없었음에도 특발성 혈소판 감소증이 발생한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

고도정수처리 공정에서의 천연유기물질 특성변화 및 소독부산물 전구물질의 제거특성 평가

노재순,손희종,박은주,황영도,최동훈,배석문,신판세 慶星大學校 環境問題硏究所 2002 環境硏報 Vol.12 No.1

In this research the movement and apparent molecular weight distribution of hydrophilic/hydrophobic organic matters in advanced water treatment process were investigated using the raw water of Maeri area, located in downstream of Nakdong river, and the variation of the disinfection by-product formation potential was also investigated. In the raw water used in experiments, the content of BDOC (biodegradable dissolved organic carbon) in dissolved organic carbon (DOC) was about 39%, and this value is far above a normal, Pre-ozone treatment showed an increase of 40% in the BDOC content, and this means that biodegradability was remarkably increased by ozone treatment BDOC concentration in BAC treated water was 0.09 mg/L, which means 84% of BDOC removal rate compared with that in post-ozone treated water. The variation of chlorine disinfection by-product formation potential in each process unit of water treatment process was analyzed. TOXFP concentration in raw water was 449 ㎍/L, and the contents of THMFP and HAAFP among TOXFP were 24% and 23%, respectively. The removabilities of these materials BAC process had an order of TOXFP > HAAFP > THMFP. BAC process was less effective for THMFP than others. The distribution of hydrophilic organic matters were evaluated in each treatment process. Hydrophilic and hydrophobic matters in the raw water had a ratio of 50 : 50, and the ozone treatment decreased the content of hydrophobic matters. The BAC treatment made the ratio 85:15. These mean that the removal of hydrophilic matters is more difficult than that of hydrophobic materials in water treatment process. In addition the portions of humic and fulvic acid in hydrophobic matters were analyzed. Fulvic acid a large portion among hydrophobic matters in the raw water, and the portion was 78%. Ozone treatment was more effective on the removal of fulvic acid than humic acid. After BAC treatment, the concentration of residual fulvic acid was high than humic acid. Chlorine disinfection by-product formation for hydrophilic and hydrophobic mattrts was compared in each process unit. in the raw water TOXFP and THMFP formation for hydrophobic matter was higher, and HAAFP was highly formated for hydrophobic matter. After post-ozone or BAC treatment, chlorine disinfection by-product formation has high potential for hydrophobic matters. Comparing humic and fulvic acids, chlorine disinfection by-product formation potential was higher for humic acid than for fulvic acid in all processes. In the comparison of the reactivity with chlorine disinfection by-product per unit DOC, THMFP and DOXFP showed higher reactivity with hydrophobic matter than with hydrophilic matter in all processes, and HAAFP was highly reacitive with hydrophilic matter. Apparent molecular weight distributions of organic matters were investigated in each process step.The content of low molecular weight organic matters less than 1000 Da in DOC was high in all processes except raw water, but molecular weight organic matters more than 1000 da was higher than molecular weight organic matters less than 1000 Da in the formation potential of chlorine disinfection by-product.

Histological evaluation of direct pulp capping with DSP-derived synthetic peptide in beagle dog

김재훈,홍준배,임범순,조병훈 대한치과보존학회 2009 Restorative Dentistry & Endodontics Vol.34 No.2

본 연구에서는 DSP (dentln sialoprotein)에서 유래된 합성 펩타이드를 동물실험 모델에 적용하여 치수노출 부위에 서 상아질 재생을 확인하고, 기존 치수복조제와의 성능 비교를 통해 새로운 치수복조제로서의 가능성을 확인하고자 하였다. 6 마리 비글견의 72 개의 치아를 이용하여, 실험적으로 치수를 노출하고 직접 치수 복조술을 시행하였다. 사용한 치수복조제는 (1) Ca(OH)₂ (CH군) (2) DSP 유도 합성 펩타이드 (PEP군) (3) 합성 펩타이드와 Ca(OH)₂ 혼합제(PEP+CH군) (4) White MTA (WMTA군) 이다. 노출된 치수에 치수복조제를 적용한 후 와동은 강화형 글라스 아이오노머로 충전하였다. 시술 후 2 주, 1 개월 및 3개월에 각각 2 마리씩 비글견을 희생시키고 조직시편을 제작하였다. 시편은 H&E 염색 후 광학 현미경으로 치수 염증 반응과 경조직 형성 정도를 관찰하였다. PEP군에서는 17 개의 시편 중 3 개의 시편에서만 경조직 형성을 관찰할 수 있었으며, 대부분의 시편에서 적절한 치수 회복을 관찰할 수 없었다. PEP군은 CH군에 비해 심한 염증반응을 보이고, 경조직 형성은 불량하였다. CH군과 WMTA군은 기계적으로 노출된 치수에서의 염증반응과 경조직 형성에 있어서 유사한 결과를 보였다. The purpose of this study was to investigate the pulpal response to direct pulp capping with dentin sialoprotein (DSP) -derived synthetic peptide in teeth of dogs and to compare its efficacy to capping substances Ca(OH)₂ and white mineral trioxide aggregate (WMTA). A total of 72 teeth of 6 healthy male beagle dogs were used. The mechanically exposed pulps were capped with one of the following: (1) DSP-derived synthetic peptide (PEP group): (2) Ca(OH)₂ (CH group): (3) a mixture paste of peptide and Ca(OH)₂ (PEP+CH group): or (4) white MTA (WMTA group). The access cavity was restored with a reinforced glass ionomer cement. Two dogs were sacrificed at each pre-determined intervals (2 weeks, 1 month and 3 months). After the specimens were prepared for standard histological processing sections were stained with hematoxylin and eosin. Under a light microscope inflammatory response and hard tissue formation were evaluated in a blind manner by 2 observers. In the PEP group only 3 of 17 specimens showed hard tissue formation indication that the DSP-derived synthetic peptide did not induce proper healing of the pulp. Compared with the CH group the PEP group demonstrated an increased inflammatory response and poor hard tissue formation. The CH and WMTA groups showed similar results for di rect pulp capping inmechanically exposed teeth of dogs.

충진탑에서 가스흡수에 의한 물질전달과 수력학적 거동에 관한 연구

최동훈,김재홍,김일배,김옥택,김장호 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.1

The use of packed column which apply efficient thermal material separation method has been required for absorption process. Absorption is applicable to waste gas from industrial process and incineration and odor control. Since we have used the lattice packing which was recently discovered in Germany, We can prevent drop of efficiency from maldistribution and channeling which were occurred when we use conventional packing. The lattice packing is efficient within the range of thermal, easy to manufacture, low production cost and make a variety of materials. This study aims to control the waste gas and odor with absorption. The dimension of packed column in which used in experiment is 0.45(d) × 2.0 m(H), and the result of and mass transfer apply to practical industry and environmental protection. The systems adopted for the absorption are Air/Water and NH3-Air/Water. We still cannot apply packed column to the domestic industry and environmental protection and depend on foreign technology, but this study will contribute to the industry and environment.

대뇌 기저핵 신경세포 일차배양에서 망간에 의해 유도된 Appoptosis : 형태학적인 소견

신동훈,김상표,정용욱,배재훈,송대규,백원기 大韓産業醫學會 2000 대한직업환경의학회지 Vol.12 No.1

목적 : 본 실험은 대뇌기저핵의 신경세포를 배양하여 망간(MnCl₂)을 투여한 후 망간독성에 의한 신경세포의 apoptosis를 형태학적인 소견으로 관찰하였다. 방법 : 배양된 신경세포에 0.01에서 10μM Mnc12를 48시간동안 처리한 후 TUNEL (TdT-mediated dUTP Nick End Labelling)법 및 투과전자현미경학적으로 관찰하였다. 결과 : TUNEL방법을 이용하여 관찰한 결과 TUNEL반응에 갈색으로 양성반응을 나타내는apoptotic 세포의 수가 대조군에 비해 MnCl₂를 투여한 군에서 유의하게 높게 나타났으며(P〈0.05), 투과전자현미경학적 소견상 대조군의 신경세포들은 핵인(nucleolus)이 두드러지게 특징적으로 보이면서 핵막과 세포질내 소기관들이 잘 보존되어 있으며, 세포질내망(ER)과 사립체(mitochondria)를 특히 많이 가지고 있었다. Mnc12를 48시간 동안 처리한 군에서 이질염색질(heterochromatin)이 핵막으로 이동하면서 응집되어 있었으며, 핵내 불규칙한 형태의 염색질이 나타나 분절이 진행되는 소견을 보였고, Apoptosis의 가장 특징적인 초기 소견인 막으로 둘러싸인 반달모양의 핵내염색질의 분절편(fragment-ed chromatin)과 주위의 상대적으로 정상적인 소기관으로 구성된 apoptotic body를 관찰할 수 있었다. 결론 : 신경세포에서 망간에 의해 apoptosis가 유도됨을 형태학적인 방법으로 확인할 수 있었으며 망간에 의한 세포사망양상에 apoptosis가 하나의 기전이 될 수 있을 것이다. Objectives : Manganese is cytotoxic to the central nervous system including basal gan-glia. Its toxic mechanism is related to oxidative stress, mediated by toxic free radicals but is specultives. In the present study , we have investigated to manifest apoptosis in man-ganese-induced cytotoxicity in primary neuronal cell culture of rat basal ganglia. Methods : To detect apoptotic neuronal cells were stained by the terminal deoxynu-cleotide (TdT) -mediated dUTP nick end-labelling (TUNEL) method and apoptotic changesin nuclei of neurons were observed by electron microscopy. Results : We showed that TUNEL immunostain showed brownish signal in the nuclei of apoptotic cells and the proportions of apoptotic cells in Manganese treatment groups were more higher than controls. On transmission electron microscopy, there were chromatine condensation with margination toward nuclear membrane and condensation of cyto-plasm in the treated with luM MnCl²for 48 hours in a basal ganglia neurons. Apoptotic bodies were found and consisted of semilunar-like condensed nuclei with relatively intact cytoplasmic organelles. Conclusions : Apoptosis appears to be one mechanism in the manganese-induced net-ronal cell death. Manganese intoxication is a convenient model for apoptosis study.

豆乳 및 Cheese Whey를 利用한 乳酸醱酵

洪在訓,金永培,劉太鍾 建陽大學校 1992 建陽論叢 Vol.- No.1

豆乳를 이용한 乳酸醱酵時 cheese whey를 첨가함으로써 乳酸菌의 醱酵能 및 風味에 미치는 영향을 조사, 醱酵乳로서의 타당성을 검토하였다. 발효용 균주로는 L.bulgaicus와 S.thermophilus의 1:1 혼합 starter를 이용하였으며 얻어진 결과는 다음과 같았다. 유산균의 생육과 산생성, cure 형성에 있어서 가장 적당한 soy milk와 whey의 혼합비율은 9:1이었고 soy milk-whey-mixture (SWM)에 lactose 첨가에 의한 균생육 및 산생성능이 향상되었다. 본 실험조건에서 SWM, soy milk, skim milk 에서 검출된 carbonyl compounds는 acetaldehyde, aceton, tehanol, hexanal, diacetyl등 이었으며 그 중 acetaldehyde가 가장 많았다. 또한 SWM의 amino acid 含量은 glutamic acid, aspartic acid, arginine etc. 順으로 나타났으며 그 영양적 가치는 skim milk나 soy milk에 뒤지지 않았다. 官能檢査의 결과는 色에 있어서 SWM, skim milk, soy milk 사이에 유의차가 없었으며 냄새에서는 skim milk와 다른 두 시료간에 1% 유의차가 있었고 맛에서는 skim milk와 soy milk 사이에 5% 유의차가 있었다. Cheese whey was added to soy milk for lactic acid fermentation by L. bularicus + S.thermophilus and its effects on cell growth, acid production and flavor were investigated. Bacterial growth, acid production and acid formation were best in soy milk concluding 10% of whey. Acid production and bacterial growth were improved by adding of lactose to soy milk-whey mixture (SWM). As volatile carbonyl compounds of SWM< acetaldehyde, acetone, ethanol, hexanal and diacetyl were detected by gas chromatography. AMong them, the amont of acetaldehyde are the largest. The result of sensory test showed no significant difference in taste between fermented skim milk and SWM, and SWM, and SWM and soy milk.