고로슬래그시멘트를 사용한 다공성 황토콘크리트의 성능 평가

김황희,강수만,박종식,박상우,전지홍,이진형,차상선,박찬기,Kim, Hwang-Hee,Kang, Su-Man,Park, Jong-Sik,Park, Sang-Woo,Jeon, Ji-Hong,Lee, Jin-Hyung,Cha, Sang-Sun,Park, Chan-Gi 한국농공학회 2010 한국농공학회논문집 Vol.52 No.3

This study aims to evaluate a porous concrete using hwang-toh, blast furnace slag and blast furnace slag (BFS) cement instead of type I cement. The tests that were carried out to analysis the properties of porous hwang-toh BFS cement concrete included compressive strength, continuous void ratio, absorption rate, and pH value, repeated freezing and thawing test were conducted. Test results indicated that the performance in porous hwang-toh concrete are effective on the kaoline based binder materials. The pH value were shown in about 9.5 ~ 8.5. The compressive strength was increased and void ratio was decreased with increasing the kaoline based binder materials, respectively. The void ratio and compressive strength were in the range of about 21 ~ 30 %, 8 ~ 13 MPa, respectively. The increased in void ratio of more than 25 % is showed to reduce the resistance of repeated freezing and thawing. Also, the resistance of repeated freezing of thawing and the compressive strength of porous hwang-toh BFS cement concrete are independent with hwang-toh content and BFS cement amount. But, the void ratio was decreased with increasing the high volume hwang-toh contents (more than 15 %).

성인에서 Haemophilus influenzae 감염증의 임상양상과 미생물학적 특성

이종섭,황병연,정희진,김우주,박승철,이도현,이창규,신종희,황규잠,이영희 대한화학요법학회 2000 대한화학요법학회지 Vol.18 No.2

목적 : H. influenzae는 성인에서 흔히 호흡기 감염을 일으키는 균주로, 최근 ampicillin 내성 β-lactamase 생성 균주들이 지속적인 증가를 보이고 있어, 이에 국내 성인에서 H. influenzae에 의한 감염의 임상양상과 분리된 균주들의 미생물학적 특성을 조사하고자 하였다. 방법 : 1998년 3월부터 1999년 9월까지 고려대 구로병원에 내원한 환자중에서 H. influenzae가 분리된 68명을 대상으로 임상양상을 조사하고 항균제 감수성 검사를 시행하였다. 분리된 33주에 대해서 혈청형, 생물형, 세포외막 단백분석을 시행하였고, β-lactamase 생성여부에 따른 감염 환자군간 임상상 및 예후의 차이를 비교하였다. 결과 : 환자의 평균연령은 68세였고, 지역사회 획득감염이 전체의 85%를 차지하였다. 폐렴과 기관지염과 같은 하기도 감염이 전체환자의 75%를 차지하였고 분리 검체 역시 객담이 84%로 가장 많았다. 환자의 71%가 기저질환을 가지고 있었으며, 그 중에 만성 폐쇄성 폐질환, 심혈관 질환, 악성종양, 당뇨병이 대부분이었다. 혈청형으로는 nontypeable 형이 68%로 가장 많았고 b형은 한 예도 없었다. β-lactamase 생성율은 63.2%였고, β-lactamase 양성균주의 항균제 내성율이 음성균주에 비하여 높았으나 β-lactamase 생성 여부에 관계없이 cefotaxime, azithromycin, ciprofloxacin에 대하여 100%의 감수성을 나타내었고 cefaclor, cefuroxime에 대해서는 10% 이하의 낮은 내성율을 보여 이들 항균제들이 치료에 효과적일 것으로 사료된다. 세포외막 단백분석에서는 C형과 D형이 전체의 64%로 가장 많았으며, 혈청형과의 유의한 연관성은 보이지 않았다. 결론 : 성인에서 H. influenzae는 주로 만성 기저질환자에서 급성 호흡기감염 또는 만성 폐쇄성 폐질환의 급성 악화를 유발한다. 기존의 보고에 비해 β-lactamase 양성율이 증가하였고, 이에 따른 항균제 내성율도 증가하여 항균제의 선택에 유의하여야 할 것으로 생각된다. 세포외막 단백분석상 특정한 유형의 균주에 의해 감염이 집중적으로 발생하고 있어 향후 역학 조사의 도구로 이용할 수 있겠다. Purpose : H. influenzae is one of the common causative microorganisms of respiratory tract infections in adults. Recently. β-lactamase producing, ampicillin-resistant H. infiuenzae has become worldwide problem as well as in Korea. We studied to investigate the clinical features and microbiologic characteristics of H. infiuenzae infections in adults. Materials & Methods : From March 1998 to September 1999, 68 patients were enrolled in this study. Clinical features of H. infiuenzae infections were investigated, 68 isolates were subjected to the β-lactamase test, and 33 isolates were used for serotyping. biotyping, antibiotic susceptibility and outer membrane protein (OMP) analysis. Results : Mean age of study patients was 68 years-old and the acquisition rate in community was 85%. Pneumonia and bronchitis were the most common type of infection such as 80%, sputum was the most common clinical specimen for H. mQuenzae isolation. 70% of patients had chronic underlying diseases. Non-typeable strains were 68% and β-lactamase producing rate was 63%. There was no difference in the clinical features and prognosis of H. influenzae infection between the β-lactamase positivie and -negative groups. The susceptibility of cefotaxime, azithromycin, and ciprofloxacin was 100% and that of cefaclor, cefuroxime was under 10% in spite of β-lactamase positivity. In OMP analysis, C and D types were dominant (64%). Conclusion : H. influenzae caused acute respiratory infections in adults with chronic underlying disorders. This study shows higher β-lactamase producing rate and antibiotic-resistance rate than that were reported previously. OMP analysis shows that two major types of strains cause clinical infections intensively.

하악골 골절 치료를 위한 miniplate와 관련된 매복견치의 치험례

황상희,박효상,권대근,남기영,김종배 대한치과교정학회 2005 대한치과교정학회지 Vol.35 No.2

하악 좌측 견치의 미맹출을 주소로 내원한 10세 여환의 과거 병력 조사 중 3년 전 교통사고로 하악 좌측 골체부에 골절이 생겨 miniplate로 관혈적 정복술을 시행받은 것을 발견하였다. 통상적인 외과적 노출과 교정적 견인치료로는 견치 맹출에 실패하였고, miniplate를 제거함으로써 정상적인 매복 견치 맹출에 성공하였기에 보고하는 바이다. This case report describes the treatment of an impacted tooth in relation to pediatrlc mandibular fracture. A 10-year-old girl presented with an impacted mandibular canine related with a miniplate in the left mandibular body area. An ordinary surgical traction ended in failure. Good occlusion was established by removal of the miniplate. It would be considered important to make an exact diagnosis of the cause and remove the mechanical obstruction instantly for successful orthodontlc treatment of an impacted tooth.

한국인 정신분열병과 HLA-DRB1 대립유전자의 관련성

황나영,김종원,오흥범,조지희,오선영,홍진표,박종익,이동은 大韓神經精神醫學會 2000 신경정신의학 Vol.39 No.5

연구목적: 유전이 정신분열병의 중요한 원인이라는 것은 널리 인정되어 왔다. 본 연구는 한국인 정신분열병과HLA-DRB1 유전자좌와의 관련성을 알아보고 외국인 대상의 보고들과 비교함으로써 한국인 정신분열병의 유전적 특성을 밝히고자 시행하였다. 방법: 정신분열병 환자 70명을 대상으로 HLA-DRB1 대립유전자를 고해상도 수준까지 분석하였다. 저해상도 수준의 HLA-DR결과는 정상 한국인 2,000명의 연구 보고와 비교하였으며 고해상도 수준의 HLA-DRB1 결과는 정상 한국인 229명의 연구 보고와 비교하였다. 결과: 저해상도 수준에서는 HLA-DR11이 정신분열병 환자군에서 9.0%, 정산인에서는 3.8%의 빈도를 보여 환자군에서 통계적으로 유의하게 높은 빈도를 보였으며(p=0.005), 고해상도 수준에서는 HLA-DRB1*1101이 환자군에서 9.0%로 정상인의 1.8%보다 유의하게 높은 빈도를 보였다(p<0.001). 결론: 본 연구에서는 한국인 정신분열병과 HLA-DR11(HLA-DRB1*1101)이 양적 상관관계를 보여 백인에서 DR4와 부정적 상관관계를 보인 결과나 일본인에서 DR1(DRB1*0101)과 양적 상관관계를 보인 결과와 상이하였다. 이러한 한국인 정신분열병 환자의 유전적 특성은 가족연구 혹은 더 많은 수의 환자를 대상으로 한 관련연구를 통하여 재확인되어야 할 것이다. 중심단어:정신분열병·HLA-DRB1·관련연구. Objective: A genetic predisposition is widely accepted in schizophrenia. This study was intended to fine any association of HLA-DRB1 alleles with korean schizophrenics and thereby compare the results of other ethni groups. Method: The subjects were 70 unrelated Korean patients. Low and high resolution typing of HLA-DRB1 alleles were performed. The comparison groups were 2,000 unrelated healthy Koreans for low resolution HLA-DR and 229 unrelated healthy Koreans for HLA-DRB1 alleles. Results: Gene frequencies of HLA-DR11(patients 9.0%, healthy control 3.8%, p=0.005) and HLA-DRB1*1101(patients 9.0%, healthy control 1.8%, p<0.001) were significantly higher in Korean schizophrenics. Conclusion: The frequency of HLA-DR11(HLA-DRB1*1101) is significantly higher in Korean schizophrenics than in healthy Koreans. HLA-DR4 and HLA-DR1, which were known to be associated with Caucasian and Japanese schizophrenics, respectively, did not show statistical association with Korean schizophrenics. This association need to be reassured though further studies with families or association study with larger numbers of subjects. KEY WORDS:Schizophrenia·HLA-DRB1·Association study.

한국인 성인 남성 폐쇄성수면무호흡 환자의 측모 두부 방사선계측학적 비교

황상희,박인숙,남기영,김종배,조용원,서영성,안병훈,박신구,박효상 대한치과교정학회 2008 대한치과교정학회지 Vol.38 No.3

본 연구는 비만도에 따른 한국인 남성 폐쇄성수면무호흡 환자의 측모 두부 방사선계측학적 특성을 파악하기 위하여 시행되었다. 이를 위하여 계명대학교 의과대학 동산의료원 수면클리닉에 수면장애를 주소로 내원하여 수면다원검사 후 치과에서 측모 두부방사선계측사진 촬영을 한 87명의 성인 환자들을 체질량지수(BMI)와 수면무호흡지수(AHI)에 따라 비비만 단순코골이군(Non-obese, simple snorers), 비만 단순코골이군(Obese, simple snorers), 비비만 수면 무호흡군(Non-obese, OSA patients), 비만 수면무호흡군(Obese, OSA patients)의 4군으로 나누어 비교하였다. 그결과, 4군 중 비만 수면무호흡군의 수면무호흡지수가 가장 컸으며, 비만 수면무호흡군보다 비비만 수면무호흡군의 하악각이 더 크고 혀 길이는 더 작았다. 또한, 비비만 수면무호흡군보다 비만수면무호흡군의 설골이 더 전하방에 위치하였고, 수면무호흡지수에 영향을 미치는 기여 인자는 비만 수면무호흡군에서는 혀 길이, 비비만 수면무호흡군에서는 설골의 후방위치였다. 이처럼 비만 수면무호흡 환자와 비비만 수면무호흡 환자의 측모 두부방사선계측학적 특성과 기여 인자가 다르게 나타나므로, 치료방법도 따라서 다르게 선택해야 할 것이다. 비만 수면무호흡 환자들에게는 먼저 체중감량이 권고되어야 할 것이고, 비비만 수면무호흡 환자들은 폐쇄부위에 따라 구강 내 장치나 Nasal CPAP (continuous positive airway pressure), UPPP (uvulopalatopharyngoplasty) 등이 추천될 수 있을 것이다. Objective: The purpose of this study was to compare the cephalometric measurements of obese and non-obese Korean male patients with obstructive sleep apnea syndrome (OSA). Methods: Eighty-seven adults who had visited the Sleep Disorder Clinic Center in Keimyung University, Daegu, Korea were examined and evaluated with polysomnography (PSG) and lateral cephalogram. They were divided into 4 groups (non-obese simple snorers, obese simple snorers, non-obese OSA patients, obese OSA patients) according to AHI (Apnea-Hypopnea Index) and BMI (Body Mass Index). Results: The obese OSA group had the highest AHI among the 4 groups. The non-obese OSA group had a significantly steeper mandibular angle and shorter tongue length than the obese OSA group. The hyoid bone of the obese OSA group was positioned anterior and inferior as compared with the non-obese OSA group. Multiple regression analysis showed that tongue length in the obese OSA group and retroposition of hyoid bone in the non-obese OSA group were significant determinants for the severity of AHI. Conclusions: From a cephalometric point of view, the obese and non-obese pateints with OSA may be characterized by different pathogeneses. Therefore, they have to be managed by individualized treatment. For the obese OSA patients, weight control must be advised as a first choice and for the non-obese OSA patients, oral appliance, nasal CPAP, UPPP and others could be chosen according to the obstructive sites.

무학산 리기다소나무와 굴참나무 군락에서의 세포성 점균류의 출현

황지영,김종희 慶南大學校 附設 基礎科學硏究所 1997 硏究論文集 Vol.10 No.-

무학산의 리기다소나무와 굴참나무 군락에서 채집한 총 111개의 토양 시료에서Dictyostelium purpureum(자주구슬먼지팡이), D. septentrionalis, D. mucoroides(구슬팡이) D. discoideum(노란구슬먼지팡이), D. delicatum, D. polycephalum(포도송이구슬팡이), D. monochasioides, D. giganteum, D. bifurcatum, D. fasciculatum, Polysphondylium mexicanum, P. pallidum(흰돌려난가지팡이), P. filamentosum, Guttulinopsis vulgaris, Acrasis rosea의 15종과 Acytostelium, Guttulinopsis, Copromyxella 속에 속하는 미확인종 3종을 포함하여 총 18종이 출현하였다. 리기다소나무 군락에서는 18종이 확인되었고 평균 출현종 수는 12.25이였다. 그리고 굴참나무 군락에서는 15종이 출현되어졌고, 평균 출현종 수는 8.88로 리기다소나무 군락보다 평균 3.38종이 더 작게 출현 하였다. Dictyostelium septentrionalis, Polysphondylium pallidum 그리고 Guttulinopsis vulgaris 등의 3종은 리기다소나무 군락에서만 출현하였다. 리기다소나무 군락에서 가장 빈번하게 출현된 종은 Dictyostelium monochasioides로 13.5%의 출현 빈도를 보였고, 반면에 굴참나무 군락에서는 D. polycephalum (18.2%)이 가장 높은 출현 빈도를 보였다. 세포성 점균류의 출현빈도에 대한 군락간의 차이가 나타나는 종들로는 Polysphondylium filamentosum, Acytostelium sp., D. purpureum, D. septentrionalis, D. polycephalum, P. mexicanum, P. pallidum, Gutitulinopsis sp. 그리고, Acrasis rosea가 군락간의 출현빈도의 차이를 보였다. The occurrence of the cellular slime molds in communities of Pinus rigda and Quercus variabilis in Mt. Muhak was investigated. Were Eighteen species isolated from the Quercus and Pinus communities. These were Dictyostelium purpureum, D. septentrionalis, D. mucoroides, D. discoideum, D. delicatum, D. polycephalum, D. monochasioides, D. giganteum, D. bifurcatum, D. fasciculatum, Polysphondylium mexicanum, P. pallidum, P. filamentosum, Guttulinopsis vulgaris, Acrasis rosea, and unidentified species from genera Acytostelium, Guttulinopsis and Copromyxella. Dictyostelium septentrionalis, P.pallidum and G. vulgaris occurred only in the community of Pinus rigida. Dictyostelium monochasioides was the most frequently found in Pinus community, but D. polycephalum was the most frequently found in Quercus community. Dictyostelium polycephalum and Acrasis rosea were more occurred in Quercus variabilis than in Pinus rigida, but D. purpureum, D. septentrionalis, Acytostelium sp., P. mexicanum, P. pallidum, P. filamentosum and Gutitulinopsis sp. were more occurred in community of Pinus rigida than in Quercus variabilis. The average number of species isolated from community of Pinus rigide was 12.25, but isolated from commuity of Quercus variabilis was 8.88.

정보보호경영시스템 규격분석에 관한 연구

황희두,추현민,김종훈 동아대학교 정보기술연구소 2006 情報技術硏究所論文誌 Vol.14 No.1

In the information society, security policy must be prepared in order to manage organization's information safely and by the security policy, security system must be developed and security management must be done. In order to do that, Understanding is required about International Organization for Standardization's Information Security Management System(ISO/BS17799:2002) and the organization that wants to certificate by using that understanding or the cooperation's security environment must magnify Security System's Correctness and Effectiveness. In this paper, We will analysis Information Security Management System's concept and then show you analysis about standard item of the cooperation that wants to certificate or the organization certification.

유기산의 해리평형에 미치는 치환기 효과와 그의 온도 및 압력의 영향. : (2) 수용액중에서 몇가지 치환나프톨류의 해리상수 (2) Dissociation Constants of Some Substituted Naphthols in Aqueous Solution

黃正儀,裵俊雄,鄭倧在,鄭在元,張景喜 慶北大學校 物理化學硏究所 1986 硏究論文集 Vol.7 No.-

치환나프톨류(4-Cl-1-Naphthol, 6-Br-2-Naphthol, 8-NH_2-2-Naphthol)의 해리상수를 온도(25∼40℃)와 압력(1∼2000 bar)을 변화시키면서 분광학적 방법으로 측정했다. 이들의 해리상수는 치환기가 들어가므로서 모두 감소했다. 이것은 치환기의 I-효과로서 설명이 가능했으며 또 온도와 압력이 증가하면 해리상수도 증가하였다. 이들 해리상수로부터 반응의 열역학적 성질을 계산하여 반응의 성질을 알아보았다. The dissociation constants of 4-Cl-1-naphthol, 6-Br-2-naphthol, 8-NH_2-2-naphthol in aqueous solution were measured by spectroscopic method in the temperature range from 25 to 40℃ and pressure up to 2000bar. The dissociation constants were decreased as the substituents were inserted in naphthol from 4.4×10 exp(-10) to 5.82×10 exp(-11) as chloride compound and 2.5×10 exp(-10) to 3.44×10 exp(-11) or 4.21×10 exp(-11) as bromine or amino compounds, respectively. This decrease can be explained with the I- or R-effects of substituents. From the dissociation constants various thermodynamic properties were claculated and discussed the characteristics of the dissociation reaction.

農民所得增大를 위한 고구마의 栽培와 利用에 관한 硏究

黃鍾奎,梁熙天,崔定植,權涌周 全北大學校 1977 論文集 Vol.19 No.-

New varieties of sweet potato Sinmi and Hwangmi were cultivated in the reclaimed hilly area of four kinds of soil series in Jeonbug province and their growth conditions such as cutting time, row spacing, application of fertilizers and plant growth regulators and covering effect were investigated. Besides these studies on cultivation of sweet potatoes, experiments on the change of chemical components of sweet potato tubers, adaptibility for storage and drying of sliced sweet potato tubers were carried out. The results are summarized as follows : 1. The early cutting of May 20, alley of 90 X 20cm, application of potassium(28kg/10a)and covering produced the high yield of sweet potatoes. The apllication of OED green did not increase the yield of sweet potatoes, 2. The yield of Hwangmi was higher than that of Sinmi. These two varieties of sweet potatoes grew well in all the test soil series except Bansan. By early cutting of May 20, the highest yield of Hwangmi was obtained in Songjung series soil and the highest yield of Sinmi was in Yesan. 3. Starch content was higher in Sinmi than in Hwangmi while yield of starch per unit area was high in Hwangmi because of its high yield of sweet potato tubers. Both Hwangmi and Sinmi showed very high water content of more than 70 per cent. The highest yield of total solid matter from Sinmi was on September 15 and that from Hwangmi on September 30. Sinmi and Hwangmi harvested on September 30 showed the highest starch content. 4. Variation in water content, starch, soluble sugar, protein and fat content during storage was minimum in the sweet potatoes stored in the temperature controlled storage chamber and was maximum in those stored in the cave under ground. As a result, percent of grade A sweet potatoes remaining was highest in the temperature controlled storage chamber and lowest in the cave under ground. 5. Hwangmi was more susceptible to Rhizopus nigricans than Sinmmi, especially under the humid condition. 6. Shape and thickness of slice did not affect the yield of dried sweet potatoes but affected the time needed for drying. Depending on the thickness and the shape of slice, variations of 36 hours and 12 hours in drying time were observed respectively. Drying table was most effective in drying of sweet potatoes and drying rack was also effective and required 2 days less time than mat. Dipping in water did not show any effect on drying time but improved the color of dried sweet potatoes.

2003학년도 신입생 특성 기초조사

황혜자,조희숙,위종희 東亞大學校 學生生活硏究所 2004 學生硏究 Vol.32 No.-