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정내정,김정욱,이상훈 대한소아치과학회 2001 大韓小兒齒科學會誌 Vol.28 No.1
소아치과에 내원한 환아 중에서 치아의 수에 따른 이상을 많이 관찰할 수 있는데 그 중의 하나가 과잉치이다. 과잉치는 정상 치판 (dental lamina)의 과도한 증식의 결과로 발생되며 유치열에서 0.3~0.8%, 영구치열에서는 1.0~3.5%의 발생빈도를 보인다. 2 : 1로 남자에게 호발하고 9:1로 상악에 호발하며 구치부보다 전치부에 많이 발생한다. 가장 호발하는 것은 상악 정중 과잉치로 상악 중절치 사이에 위치하며 하악 전치부에서는 2%로 낮은 빈도를 보인다. 본 증례는 파노라마사진 촬영 결과 하악 좌우측 유중절치의 선천적 결손과 4개의 영구 절치외에 2개의 과잉치가전치부에 관찰되어 발치와 교정치료를 통해 양호한 결과를 얻게 되어 보고하는 바이다. Supernumerary tooth is one of the abnormalities in tooth number. Supernumerary tooth result from excessive proliferation of dental lamina and incidence reports identify a range of 0.3~0.8% in primary dentition, 1,0~3.5% in permanent dentition with males being affected twice as frequently as females, maxilla nine times as frequently as mandible. The incidence is more in anterior tooth region than in posterior region. The most common supernumerary tooth is the mesiodens, which located between maxillary central incisors. The occurrence is very rare in the incisor region of mandible and the reports on incidence is 2%. In this case, there were two supernumerary teeth in the mandibular region and we could acquire normal alignment of mandibular incisors by extraction and orthodontic treatment
솔-젤법에 의한 Nb_2O_5-Fe_2O_3 혼합산화물의 제조 및 산 특성조사
정석조,양희정,권재범,이내우,우희철 釜慶大學校 2000 釜慶大學校 論文集 Vol.5 No.-
In this study, some of results from a study conducted on the preparation of niobium coated hematite particles to be used as a catalyst are presented.α-Fe_2O_3 (hematite) particles obtained by aging an acidic solution of ferric(Ⅲ) ions at high temperature were first prepared as core particles and synthesised by hydrolysis at high temperature with layers of amorphous niobium pentaoxide (Nb_2O_5) deposited by the hydrolysis of niobium pentachloride. The effects of varying molecular ratio of Nb/Fe (10/1, 5/1, 1/2, 1/5, 1/10) were studied. The synthesised particles were characterized for their physical and chemical properties using XRD, SEM, TPD, BET etc. The process of the surface coating showed heterocoagulation rather than surface nucleation and growth. A preliminary investigation of the acidic characterization and specific surface area of the synthesised particles showed that these particles can achieve an acidic characteristic changed and enhanced specific surface area of that of pure niobia and α-Fe_2O_3 prepared here.
고영민,이내우,최재욱,우희철,신학기 한국산업안전학회 2002 한국안전학회지 Vol.17 No.1
Among the disposal techniques of inorganic wastewater sludges from industries, most of sludges were dealed with buring underground inefficiently. But we have tried to recycle the resources that exhausted inorganic sludges were properly blended to certain ratioes to make lightweight aggregate, that means manufacturing of it can be possible through blending of various components, drying, sintering, cooling and crushing to certain sizes that are needed by consumers. As disposal method of inorganic wastewater sludge is changed to environmentally fraternative method, this method could be very useful to make lightweight aggregates for decoration of building and the other so many purposes of those usages. That could be economically useful due to expected income for buring costs of ordinary disposal method from industries and sales income after manufacturing it. The second important profit is saving foreign currency from purchasing self-developed lightweight aggregate instead of importing expensive foreign product. This product will be also very impressive to user because of the fraternative lightweight to be composed of apatite structure that is important part of human body.
보리새우, Penaeus japonicus의 中腸에서의 Glycine Transport
朱鎭球,宋容圭,劉寬凞,朴來鉉,申埈國 충남대학교 자연과학연구소 1983 忠南科學硏究誌 Vol.10 No.2
Glycine transport through mucosal border of the columnar epithelium on the marin shrimp, P. japonicus midgut has been investigated with particular emphasis on the interaction to Na^+. The transmural fluxes of the amino acid across the midgut wall were also determined. 1. Mucosal glycine uptake occurred via Na^+-dependent and Na^+-independent carrier processes, and the passive movement of glycine. 2. Mucosal and serosal glycine uptakes in normal saline were higher than those in Na^+-free medium, but lower than those in Cl^--free medium. 3. L-alanine was acted like a competitive inhibitor of mucosal glycine entry process. 4. Exit process of glycine across the mucosal membrane was accelerated by the presence of L-alanine in the medium. 5. Prediction equation of saturable glycine uptake was derived from experimental data. 6. Turning point and regression coefficients of segmented linear regression for the high affinity and low affinity components of glycine carrier were determined by using computer. 7. Ultrastructural changes of mucosal epithelial cells related to the experimental treatments were observed through transmission and scanning electron microscope.
박상호,온영근,김현정,이태훈,길효욱,김현건,박수진,송해정,한대희,방덕원,신원용,이내희,김성구,권영주 순천향의학연구소 2003 Journal of Soonchunhyang Medical Science Vol.9 No.1
Background : Microvascular angina or syndrom X is heterogenous and encompasses different pathogenetic entities. Several studies suggest that microvascular angina have good prognosis and occurs predominantly in postmenopausal women. Lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, CRP and fibrinogen are the independent risk factor of acute coronary syndrome and are the chief underlying cause of atherosclerosis. We investigated clinical characteristics and markers in patients with microvascular angina. Methods : We studies 23 patients diagnosed with microvascular angina and 16 control group with negative treadmill exercise test and no significant coronary angiogram. We investigated clinical characteristics in patients group and evaluated symptom during a follow-up period of 4.2± 2.5 month. Exercise time in treadmill exercise test was compared between patients and control group. We assessed the level of markers, such as lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, CRP and ESR in two groups. Results : There is no difference in age between two groups. Patients group had a tendency to increase in female, hypertension, DM, and smoking history, but there was no statistical significance difference. Exercise duration time was significantly decreased in patients with microvascular angina (p<0,05). Serum lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholestrol, Triglyceride, ESR, Fibrinogen and Homocystein value were no significant difference between microvascular angina and control group. Only CRP was significantly high in patients with microvascular angina (p<0.05). Conclusion : There was no statistical significance difference in age, sex, hypertension, DM and smoking history between two groups but patients group had a tendency to increase the prevalence in hypertension, DM and smoking history, female. Also, Symptom improvement and disappearance in follow-up was presented in 11 patients of 19(57.9%). Exercise tolerance was worse in patients group than control group. CRP value was significantly higher in patients group than control group. There was no statistical significance difference in lipoprotein (a), total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, homocystein, ESR and Fibrinogen between two groups.
병행 프로그램의 데이타 오류 검출을 위한 명세와 테스트 케이스 생성 방법
김내희(Nae-Hee Kim),차성덕(Sung-Deok Cha) 한국정보과학회 1997 한국정보과학회 학술발표논문집 Vol.24 No.2Ⅰ
현재까지 병행 프로그램의 테스팅은 실행 중에 발생하는 이벤트의 순서가 명세에 기술된 이벤트의 순서 관계를 지키고 있는가를 검사하는 연구가 주류를 이루었다. 그러나 순차 프로그램 테스팅과 마찬가지로 데이타와 관련되어 발생할 수 있는 오류도 함께 검사할 필요성이 있다. 본 논문에서는 실행 경로상의 오류를 찾는 것 외에도, 데이타에 관한 오류를 찾기 위한 명세 및 테스트 케이스 생성 방법을 제안한다. 이를 위해 MSC(Message Sequence Chart)를 확장하여 이벤트의 순서 관계를 기술하고, 데이타와 관련된 부분은 테이블 형식으로 기술한다. 이들을 통합하여 생성된 테스트 케이스를 통해서 병행 프로그램의 이벤트 순차 오류와 함께 데이타의 오류를 효율적으로 발견할 수 있다.