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이진호,허진국,나종천,김의석,이혜경,신보문,김석호,고행일 대한감염학회 2004 감염과 화학요법 Vol.36 No.4
비장티푸스 살모넬라증에 의한 장열과 장천공은 매우 드물다 저자들은 방어기전의 손상이 없는 건강한 성인에서 비장티푸스성 D군 살모넬라 장열에 동반된 장천공이 발생한 예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. The case of enteric fever and bowel perforation caused by nontyphoidal Salmonella spp. is extremely rare. We report a case of a 28-year-old man who suffered from enteric fever with complicated a small bowel perforation, which is a known complication of S. typhi and S. paratyphi infections. The culprit later proved to be nontyphoidal group D Salmonella spp. in our case.
치아우식증 수복용 복합레진의 개발과 치아 적합성에 관한 연구 제 3 편 : 각종 용액내에서의 표면경도 변화와 세포독성에 관한 연구
최유진,조한국,민병순 大韓齒科器材學會 1992 대한치과재료학회지 Vol.19 No.2
This studies were planned to evaluate the cytotoxicity of cured experimental composite resin using a cell culture method, and the hardness changes of it stored in various aqueous acids and ethanol with considerations that solubility of resin surfaces will occure the decrease of hardness should be related with toxicity occured by elucited components. Cytotoxicity of experimental resins were tested by agar overlay methods, and some solutions in which disc type resin specimens will be stored were prepared by dilution of ethanol or acids into distilled water. The microhardness of experimental and commercial dental restorative composite materials exposed to various chemicals were measured with micro Vicker's hardness tester. Following conclusions were drawn : 1. KCR-22, experimental composite resins prepared in this study exhibited the same degree of cytotoxicity with commercial products. 2. The intensity of cytotoxicity decreased after incorporation of filler to BIS-GMA based resins. 3. The hardness numbers decreased dramatically once the composite had been immersed in ethanol solutions, however any of acidic solutions did not show the decrease of VHN. 4. The incorporation of fillers to BIS-GMA based resins which showed the double increased VHN than unfilled resins. 5. Surface hardness were increased rapidly in saline compared to it in air.
급결제 및 혼화제 종류가 숏크리트 내구성에 미치는 영향에 관한 연구
백신원,권소진,이영수,김의성,신용석 한국안전학회 2003 한국안전학회지 Vol.18 No.3
Concrete and shotcrete should withstand the conditions for which they have been designed, without deterioration, over a period of years. But concrete and shotcrete are being deteriorated according to aging by internal and external causes. Recently, many studies on the durability of concrete have been conducted. But the durability of shotcrete is rarely studied. So, in this study, chloride ion penetration test, freeze and thaw test, neutralization test were conducted to examine the durability characteristics of shotcrete with several accelerator and chemical admixture types. These results indicate that shotcrete with alkali free accelerator and with superplasticizer are durable. Therefore, the present study provides a firm base to make high performance shotcrete.
조용재,김승범,진동규,서의교,김상진 대한척추신경외과학회 2004 Neurospine Vol.1 No.1
Objectives: Symptoms arising from spinal cord tumor are often insidious in onset and nonspecific in nature. To make the subtle initial signs and symptoms of these tumors more apparent to clinicians, we retrospectively analyzed the data of spinal cord tumor patients who were misdiagnosed as degenerative spine disease. Methods: We reviewed history, symptom, sign, radiological study, and pathologic diagnosis of 19 spinal cord tumor patients who had been operated as degenerative spine disease, especially duration and description of symptoms and sign before an accurate diagnosis was made. Results: Average duration of delay before an accurate diagnosis was made was 178.4 days(range: 23~303). Common symptom and signs on neurologic examination included aggravation of pain(8 cases; 47.1 %), and neurologic decline(9 cases; 52.9%) The misdiagnosis included a herniated lumbar disc(16 cases; 94.1%), lumbar stenosis(1 case; 5.9%). Inappropriate treatment for these misdiagnoses included 5 percutaneous lazer discectomies, 9 discectomies, 3 chemonucleolysis, 2 posterior lumbar interbody fusions with cages. Conclusion: When a patient has symptoms that appear to be out of the ordinary, surgeons should suspect other spinal disease including the spinal cord tumor.
Effects of γ-Irradiation on the Antiallergic Activity of Alginate
Eu Jin Song,So Young Lee,Koth-Bong-Woo-Ri Kim,Jin Gyu Park,Jae Hun Kim,Ju Woon Lee,Myung Woo Byun,Dong Hyun Ahn 한국식품과학회 2008 Food Science and Biotechnology Vol.17 No.5
This study was performed to determine the effects of γ-irradiation on the antiallergic activity of alginate. An alginate aqueous solution was γ-irradiated at 3, 5, 7, 10, 20, and 100 kGy. First, the molecular weight (Mw) of alginate rapidly decreased as the γ-irradiation dose increased up to 20 kGy. Then, the antiallergic activity of the γ-irradiated alginate was measured. Interlukin (IL)-4 cytokine and IgE level were significantly decreased in the γ-irradiated alginate groups as compared to the control group in vitro. The mice intraperitoneally administered with the γ-irradiated alginate exhibited lower ovalbumin-specific IgE and IgG1 level in serum than the control mice. Furthermore, the γ-irradiated alginate suppressed total and ovalbumin-specific IgE secretions in the splenocytes. Increased IL-2 level was observed in the culture supernatants of the splenocytes that were obtained from the mice administerd with the γ-irradiated alginate, while IL-4 level decreased. The present study indicates that γ-irradiated alginate can suppress allergy in a mouse allergy model.