소양호의 DOC와 POC의 분포

김범철,최광순,김철구,이유희,김동섭,박제철 江原大學校 附設 環境硏究所 1998 環境硏究 Vol.15 No.-

Seasonal and vertical distributions of dissolved and particulate organic carbon were investigated from May 1995 to March 1997 in n deep mesotrophic reservoir, Lake Soyang, POC contentrations at the dam site ranged from 0.1 to 1.8 mgC/L and DOC concentrations ranged from 1.4 to 4.9 mgC/L. POC concentrations in the surface layer were higher in the season of cyanobacterial bloom, July to September. High POC was observed at the depth of 30 to 60m after storm runoff in summer monsoon season. Turbid storm runoff formed intermediate current laden with much particulate materials from terrestrial sources. The vertical and seasonal variation of DOC was smaller than POC. Higher DOC was observed near the lake bottom which implies sedimentation and degradation of much organic detritus at the bottom. The ratio of DOC : POC varied from 2 to 60, and the ratio was lowest in September 1995 when algal density was highest. DOC : POC ratio of the main inflowing river, the Soyang River, varied from 1 to 10, and the ratio was low in storm runoff when the POC concentration was high.

급성 림프구성 백혈병 환자에서 발생한 침습성 국균 심내막염 2예

신성철,백경란,정재홍,송봉근,김동희,전경만,채제욱,손준성,정숙인,오원섭,송재훈 대한감염학회 2003 감염과 화학요법 Vol.35 No.5

국균은 호흡기를 통해 유입되며 심한 면역기능저하 환자에서 기회감염을 일으키는 진균이며 주로 혈관을 따라 폐를 침범하고 심장과 골침범은 매우 드문 것으로 알려져 있다. 저자들은 급성 림프구성 백혈병 환자에서 발생한 침습성 국균 심내막염을 2예을 경험하였다. 19세 남자환자로 동종 조혈모세포이식 후 발생한 고열과 요통의 원인으로 감염성 심내막염 진단하에 수술결과 국균에 의한 감염으로 확증되어 수술적 절제술과 liposomal amphotericin B로 치료하였으나 국균 심내막염의 재발과 국균 척추염의 악화, 뇌 출혈로 사망하였다. 23세 남자환자로 관해요법 후 발생한 고열과 요통의 원인으로 국균 심내막염과 국균 척추염 진단하에 수술적 절제술과 amphotericin B로 치료하여 1년 2개월 동안 국균 심내막염의 재발은 없었으나 지속적인 백혈병의 재발과 국균 척추염의 악화, 침습성 폐 국균증으로 사망하였다. Although Aspergillus endocarditis has rarely been reported, it can cause fatal complications in hematologic malignancy patients and allogeneic stem cell transplant recipients. We experienced two cases of aspergillus endocarditis developed in acute lymphoblastic leukemia patients. Case; A 19-year-old patient developed Aspergillus endocarditis after allogenic hemopoietic stem cell transplantation. He was treated with surgical intervention and liposomal amphotericin B. He died of recurred Aspergillus endocarditis and cerebral hemorrhage probably related with aspergillosis of central nervous system. Case 2; A 23-year-old patient developed invasive Aspergillus endocarditis after induction chemotherapy. Aspergillus endocarditis was successfully treated by surgical intervention and amphotericin B. He died of refractory neutropenic fever and sepsis after the third relapse of leukemia and repetitive chemotherapy. He probably had invasive pulmonary aspergillosis without evidence of endocarditis recurrence. Because the mortality of Aspergillus endocarditis is very high, early diagnosis and surgical intervention are very important for better outcome.

H. Broch와 그의 文學

趙哲濟 慶北大學校 獨語獨文學硏究會 1973 獨語獨文學 Vol.3 No.-

600N급 강을 적용한 기둥-보 용접접합부의 인성평가

이철제,박양희,김성배,김종락 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

This paper aimed to evaluate the toughness of the 600N grade high strength column to beam steel welded joint which subjected to cyclic loading. The specimens were designed as a unit frame of tall building's middle-stores, and cross type weld connection. SA440 were used for column and SM490 for beam. Six tests were carried out. EBS (Enlarged Beam System) specimens were considered to be superior structural strength, ductility capacity. Beam to column connection using EBS showed higher strength and toughness than the basic shape.

獨文學의 形姿(6)

趙哲濟 慶北大學校 獨語獨文學硏究會 1985 獨語獨文學 Vol.15 No.-

다구치법에 의한 고 규소 내산주철의 용해주조공정 최적화

신제식,이상목,문병문,김정철,한동운,백승한 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.2

In this study, Taguchi method, one of the design tools of experiments, was applied to optimize casting process parameters of the high silicon corrosion-resistant iron. Three casting process parameters such as melting temperature, rare earth metal (mischmetal) addition, and pouring temperature were chosen. Using SN (signal-to-noise) ratio calculated from ultimate tensile strength of each experimental casting run, the relationship between the casting parameters and mechanical properties was statistically evaluated. The casting condition of a melting temperature of 1,650℃, 0.2% rare earth metal addition, and a pouring temperature of 1,350℃ led to an excellent ultimate tensile strength above 11 kgf/mm², which is beyond the industrial criterion. The effects of the casting parameters on mechanical properties and corrosion resistance were further confirmed by combined analysis of fractography, hydrogen content determination, microscopic test, and acid resistance test. (Received August 23, 2004)

파노라마 X선 사진을 이용한 무치악 환자의 방사선학적 연구

문제운,최순철 大韓口腔顎顔面 放射線學會 1992 Imaging Science in Dentistry Vol.22 No.2

The author has examined the abnormalities in panoramic radiographs of 668 edentulous patients. The distribution, type, incidence, and location of all abnomalities were analized, and the distances between alveoar crest and anatomical structures were measures. (Maxillary measurements were performed between alveloar crest and lower margin of the maxillary sinus and mandibular measurements between alveolar crest and upper edge of the mental foramen). The obtained results were as follows ; 1. Of the 668 panoramic radiographs examined, 103(15.4%) showed one or more abnormalities. 2. The incidence of abnormalities was decreased by years, which was 22.0% in 1970's and 16.8% in 1980's and 12.1% in 1990's. 3. The distribution of abnormalities as follows ; 43(40.2%) superficial root fragments, 24(22.4%) impacted teeth, 9(8.4%) imbedded root fragments, 7(6.5%) cysts, 7(6.5%) fractures, 5(4.7%) foreign bodies, 5(4.7%) abnormal radiolucencies, 4(3.7%) abnormal radiopacities, 2(1.9%) bony defects, 1(0.9) tumor. 4. In the location of abnormalities, 42 cases(35.3%) were in the maxillary posterior region, 26 cases(21.8%) were in the maxillary anterior region, 20 cases(24.4%) were in the mandibular posterior region and 18 cases(15.1%) were in the mandibular anterior region. 5. In the distance between alveolar crest and maxillary sinus, 109 cases(9.7%) were below 0.5mm, 757 cases(67.6%) were between 0.5mm and 10mm, 254 cases(22.7%) were above 100mm. In the distance between alveolar crest and mental foramen, 73 cases(8.8%) were below 0.5mm, 501 cases(60.7%) were between 0.5mm and 10mm and 252 cases(30.5) were above 100mm.

치아재식후 치유과정에서 fibronectin의 분포에 관한 면?조직화학적 연구

한휘철,김현수,주성숙,신제원 慶熙大學校 齒科大學 1995 慶熙齒大論文集 Vol.17 No.2

Periodontalhealing requires the formation of new periodontal tissues comprised of various extracellular components. The present study investigated the formation and distribution of the fibronectin FN), a major adhesive glycoprotein. Rats weighing 130`150 gm were fed 0.4% R -aminopropionitrile for 5 days to achieve gentle tooth extraction. The maxillary first molars were extracted under anesthesia with pentobarbital, washed in sterile distilled water, treated with bacterial collagenase to digest collagen fibers on the root surfaces. After washing in water overnight, the mesial root surfaces were demineralized by application of citric acid, washed, dried and stored at 4 t. Immediately after tooth extraction and bleeding control, the treated molars extracted previously from other rats were reimplanted. Ten animals each were sacrificed 45 min, 1, 3, 6, 10 days after reimplantation of teeth by intracardiac perfusion with 4% paraformaldehyde. The replanted molars and surrounding tissues were cut, demineralized, dehydrated and embedded in paraffin. Imrnunostaining of the FN was achieved by the avidin-biotin complex method. The results as follows; 1. The control group showed gradual healing from 1 day and complete regeneration of the periodontium at 10 days. 2. At early healing stage, intense staining for FN was observed in the newly formed connective tissues, granulation tissue, especially around blood vessels as well as inflammatory cells. 3. At later healing stage, FN was expressed later in the periodontal ligament, cementum, osteoid, and newly formed connective tissue and its attachment site to the root surface. 4. Strong immunolabeling for FN was found in cementoblasts, osteoblasts, and new bone and cementum, which weaken staining was observed on the dentin and alveolar bone. 5. These results suggest that the healing after replantation is achieved through a series of cell differentiation and formation of FN.

富歸芍藥散이 白鼠의 排卵에 미치는 影響

李汀帝,金鐘桓,金哲源,柳深根 한국전통의학연구소 2000 한국전통의학지 Vol.10 No.1

Dangguijagyagsan(DGJYS) is used in infertile. An attempt was to evaluate the influences of DGJYS on the serum concentrations of FSH, LH and estrogen, the histolgical and optical changes of ovary. The results of the study were as follows : 1. Blood FSH level increased in experimental group as compared with control group on 5th day and 10th day, which showed no efficacy. 2. Blood LH level decreased in experimental group as compared with control group on 5th day and 10th day, which showed no efficacy. 3. Blood E2 level increased in experimental group as compared with control group on 5th day and 10th day, which showed no efficacy. 4. In histolgical observations of ovary, ovulation increased in experimental group as compared control group on 5th day and 10th day, which showed no efficacy. 5. In optically observations of ovary, size of ovary showed no change in exerimental group as compared with control group on 5th day and 10th day. 6. In histological observations of ovary, endometrium showed multiplication. According to these results, the effects of DGJYS are assumed to be usefully utilized for progress of ovulation on uterus and ovary.

獨文學의 形姿(Ⅰ) : 文學史를 代身해서

趙哲濟 慶北大學校 獨語獨文學硏究會 1974 獨語獨文學 Vol.4 No.-