급성신우신염의 임상적 고찰

신영태,신승훈,이순구,이정호,이강욱 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.2

A clinical retrospective study was undertaken in 81 patients with acute pyelonephritis admitted to the Department of Internal Medicine, Chungnam National University Hospital from January 1983 to December 1989. The results were as follows : 1. Total number of patients studied was 81(M/F ratio, 1 : 4.4). The M/F ratio of 22 complicated patients (27.2%) was 1 : 2.7 2. The predisposing factors associated with complicated patients were as follows : 7 cases of urinary tract stone, 7 cases of pregnancy, 4 cases of neurogenic bladder and each one case of prostatic hypertrophy, ureter cancer, bladder diverticulum and polycystic kidney disease. 3. The common subjective symptoms on admission were fever and chills, frank pain, nausea and vomiting. High body temperature and CVA tenderness were noted in 61% and 95% of patients respectively. And 50.6% of patients revealed right CVA tenderness and 28.4% in left, 16% in both respectively. There was no difference in symptoms and signs between complicated and uncomplicated groups 4. In 50 patients(61.7%) microorganisms were isolated on the urine culture specimens. The most common organism was E. coli(80%), and followed by Staphylococcus aureus and Serratia odorifera. E coli was the most frequent pathogen in both female and male patients, and in complicated and uncomplicated groups. (In sensitivity test of complicated and uncomplicated groups). In sensitivity test of causative pathogens to antibiotics, E coli was sensitive to amikacin(93%), tobramycin(83.3%) and gentamycin(79.4%) and 88.9 percent of E coli were ressistant to ampicillin 5. In urinary examination on admission, pyuria was noted in 81% of patients, and proteinuria and microscopic hematuria were noted in 68% and 44% of patients respectively. 6. Within 3 days after antibiotics treatment deference was occured in 73.5% of total patients, and complicated patients revealed delayed defeverence compared to uncomplicated ones.

地衣植物 移植과 大氣汚染에 關한 生態學的 硏究

朴勝太 全北大學校 基礎科學硏究所 1978 基礎科學 Vol.1 No.1

Injury symptoms in lichen transplants have been correlated with the SO_2 concentration prevailing at their exposure site in the Jeonju area from May 8 to Oct. 1978. For this study bark-discs bearing lichens which were identified ten species, were cut out from an unpolluted region. These were attached in cut-out holes on wooden boards and they were fixed at a height of 1.5-3m on a tall tree at each of the 18 sites and in laboratory 20 bark discs treated with H_2SO_4 sol. from 0.1 ppm to 0.5 ppm concentration during same periods. The changes in lichens, especially, Parmelia austrosinensis, P. crinita and P. praesorediso a taking place in the different conditions were compared with respect to internal morphology, biomass, acetone soluble substances, and chlorophyll. The results indicate that the degrees of plasmolysis lead to 5% reduction and biomass values per unit area and the increased production acetone soluble substances of P. austrosinensis, P. crinita and P. praesorediosa were found to be decrosse at reduced levels of pollution. A similar observation has been made for the total damage of chlorophyll with respect to SO_2 pollution also. Taking the chlorophyll content of lichen thallus of control area to be 100 percent, the amount of chlorophyll in thallus of Zone 1, determined by comparing the height of its absorption peak at 663nm, was found to be 95% respectively. The severe injuries by H_2SO_4 sol. are appeared to develop following exposure to 0.3 ppm for 3 months. It should be emphasized that in an ecological study, where the long-range effect of pollution is being monitored with the help of a biological system. Hence, we may say that long-range average concentration of SO_2 below 0.02ppm causes respectively no injury to epiphytes in the Jeonju area.

植物生長과 生長曲線

朴勝太 全北大學校 基礎科學硏究所 1979 基礎科學 Vol.2 No.1

To predict the general form of plant growth, this paper developed the logistic equation and the interpretation of theoretical models for plant growth. The important point of the growth curve in an individual, population and community is called as the half time (t_H). At this point, the growth rate is maximum. The theoretical maximum growth and productivity (K) estimated by growth gradients to be substigtued normal distribution equation. The basic concepts transformed the computer programming and application of the growth of pitch pine (Pinus rigida) planted in Jeonbug area and the growth of yeast population by Carlson data.

Battelle EES技法을 利用한 우리나라 水資源開發事業의 環境影響評價 硏究

李成珣,張泰鈺 嶺南大學校 環境問題硏究所 1985 環境硏究 Vol.5 No.2

The purpose of this study is to examine the Environmental Impact Assessment techniques, including Battelle EES, item-by-item method, Checklist method, Matrix methid, Ad hoc method, Map Overlay method, etc., and to demostrate how to use them in the project programs of water resource development in Korea.Even though most techniques foe asseessment of environmental impacts in the development project process are useful, the Battelle EES method is effective and useful as the most effective technique. In particula, the Battelle EES very simple and realistic to collect data which are needed for the components of environmental impacts, and to find out good results of analysis for the study.

접촉산화수로공법에 의한 수질개선연구

김태철,이규승,오범룡,민진우 忠南大學校 環境問題硏究所 1998 環境硏究 Vol.16 No.-

The effect of non-point source pollution in rural area has much influence on the stream water quality. It is difficult to improve the stream water quality, because of complex pollutant loads technically and because of treatment-cost of the deteriorated water economically. The best way to reduce the non-point source pollution is to check the water quality in the inlet of irrigation channel and control the water quality in the outlet of drainage channel. Stream water quality in the rural area is closely related with the fertilizers, pesticides, and livestock wastewater. Basically the rate of treatment and retention time were estimated for BOD, COD, SS, NH₄-N, T-N, NO₃-N, T-P, PO₄-P using materials such as gravel, crushed stone, useless tire, geotextiles, and concrete block, respectively and also using the combined materials. The rate of treatment for BOD, COD, SS is high, but that for NH₄-N, T-N, NO₃-N, T-P, PO₄-P is low. Optimal retention time in the natural contact channel was 90 minutes.

PC에 의한 재래식 NC 선방의 DNC화

김근태,정선환,노승훈 金烏工科大學校 1991 論文集 Vol.12 No.-

The key feature of any DNC System is the on-demand supply of parts program data to a number of NC machine tools. Usually DNC Systems are based on the main frame computers or mini computers. This paper describes the design philosophy and the implementation of a PC-based Low-Cost-DNC system of a conventional NC Lathe which was made in the early 1970s.

SB41鋼의 疲勞龜裂成長에 따른 龜裂길이와 速度에 관한 硏究

丁太權,崔秉起,梁權承 조선대학교 기초과학연구소 1987 自然科學硏究 Vol.10 No.1

From an investigation of crack growth behavior through low cycle fatigue experiment on SB41 steel, the following conclusions were obtained: 1) Owing to the decrease of stress amplitude the fatigue life becomes less, and if the repetition number N is 10^4-10^5fhe transition range comes into being and below 5XlO^4 cycle the 1ow cycle breakage occurs. 2) From the relation between the crack growth behavior da/dN and the stress extension computation range △K, the higher the stress ratio R and the attitude of initial crack length are, the more rapidly the growth rate of crack increases. 3) The greater the attitude of initial crack length is, the deeper the repetition phenomenon of ductile fracture and critical crack diffusion are and the more fatigue life decreases.

Heligmosomoides polygyrus 감염 마우스의 비장세포로 부터 만든 Conditioned Supernatant의 면역억제작용

하대유,한병갑,김명선,고유승 大韓免疫學會 1996 大韓免疫學會誌 Vol.18 No.3

Heligmosomoides polygyrus is gastrointestinal parasitic nematoda which is common parasire of wild rodents. The experimental infection with this parasite has been studied extensively in models of host-parasite interaction. The present study was undertaken to investigate both the effects of administration of conditioned supernatant or conditioned medium(CM) prepared from H. polygyrus-infected mice on the humoral and cellular immune responses in mice. Normal conditioned supernatant(NCM) was prepared from uninfected mouse splenocytes stimulated with Con A. Supematants conditioned by Con A-stimulated splenocytes of H. polygyrus -infected mice were prepared on different days post-infection, namely on day 6(HCM-D6), day 14 (HCMD14) and day 18 (HCM-D18) post-infection with H. polygyrus L3 larvae. Effects of NCM, HCM-D6, HCM-D14 and HCM-D18 on delayed-type hypersensitivity(DTH) to sheep red blood cells (SRBC), contact hypersensitivity to dinitrofluorobenzene (DNFB), hemagglutinin response to SRBC, ovalbumin (OVA)-induced active systemic anaphylaxis(ASA), and anti-OVA specific IgE were investigated. Effect of anti-IL-4 antibody (11B11) on immunoinhibitory action of HCMD18 in OVA-induced ASA was also investigated. It was found that the administration into mice of HCM-D6, HCM-D14 or HCM-D18 significantly suppressed DTH to SRBC, contact hypersensitivity to DNFB, hemagglutinin response compared with NCM. The degree of immunosuppressive activity of HCM was less marked in HCM-D6 than HCM-D14 and HCM-D18. Interestingly, HCM-D18 prepared from ICR mouse strain also showed the profound suppression of OVA-induced ASA in BALB/c and C57BL/6 mouse strains as well as in ICR mice. ASA-inhibitory activity of HCM-D18 was Somewhat abrogated in terms of mouse mortality when mice were treated in the combination of HCM-D18 and anti-IL-4 antibody, indicating that IL-4 may play a role, at least in part, in the inhibitory activity of HCM. Taken together, the present study may be the first to demonstrate that conditioned supernatants prepared from the spleen cells of H. polygyrus-infected mice may suppress the in vivo humoral and cellular immyne responses to heterologous antigens, particularly fatal anaphylaxis induced by OVA, strongly suggesting that

전신성 홍반성 낭창의 임상적 고찰

신영태,이정호,신승훈,이강욱 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2

To elucidate the clinical feature and clinicopathologic correlation of systemic lupus erythematosus(SLE), the authors analized symptoms and signs, laboratory findings and kidney pathology in 25 patients with SLE who were admitted to the Department of Internal Medicine, Chungnam National University Hospital from My 1985 to October 1989. Kidny biopsy was performed in 15 patients out of 19 patients who showed lupus nephritis. The results were as follows: 1. The ratio of male of females was 1:11.5. They were 14 to 53 years old and mean age was 30.2 years old. The peak age incidence was 3rd and 4th decades. 2. The most frequent chief complaint on admission was fever and chills. Most patients had two or more symptoms such as arthralgia, malar rash, generalized edema or weakness. 3. In 84% of the patients, duration from onset of the disease to diagnosis of SLE was longer than 1 month, which suggested that diagnosis of SLE is not easy in early stage of SLE. 4. The positive anti -DNA was the most frequently observed ARA criteria of SLE. And positive ANA, malar rash, persistent proteinuria, leukopenia, positive LE cell preparation, arthritis and oral ulcer were observed in order of frequency. 5. The frequent and pertinent general symptoms, not included in ARA criteria were fever and chills, arthralgia and abdominal pain which were observed in more than half of the patients. 6. On immunologic test, serum concentrations of C3 and C4 were decreased in 96% of the patients, serum concentration of Ig G, Ig A were increased in 65%, 36.8% and 26.3% of the patients respectively. The RA test was positive in 25% of the patients. 7. Lupus nephritis represented 76% of all SLE patients and pathological classification on 15 patients with lupus nephritis revealed class IV lupus nephritis in 9 patients(60%), class II n 3 patients (21%), class V in 2 patients(13.3%) and class III in 1 patient. 8. 7 out of 9 patients with class IV lupus nephritis and 1 out of 2 patients with class V lupus nephritis showed nephrotic syndrome. Progressive azotemia were observed in 3 out of 9 patient with class IV lupus nephritis and in 1 out of 2 patients with class V lupus nephritis. There were no nephrotic syndroms or azotemia in class II and class III lupus nephritis. 9. Of 17 patients who can be followed up, 9 patients were improved, 5 patients became progressive azotemia and 3 patients resulted in death. The causes of death were myocarditis with pericarditis in 1 patients, pneumonia with acute respiratory failure in 1 patient and CNS involvement of SLE in 1 patient.

棲息地 環境에 依한 蓴菜의 生態遺傳的 變用에 關한 硏究

朴勝太 全北大學校 生物學硏究所 1980 生物學硏究年報 Vol.1 No.-

The investigation was taken in an attempt to compare ecogenetic relationships of the water shield population by the environmental changes, mainly, related to the nitrogen and phosphorus components which were analysed from soil, water, and plant in eleven sites of the three ponds. Genetic variation in water shield population in elven sites were analysed in the Esterase and Acid Phosphatase by starch gel electrophoresis technique, and the frequencies of their enzyme loci were calculated. The genetic similarities and distances were calculated on the basis of their frequencies of enzyme loci, and environmental correlations of eleven sites were calculated on the basis of the amounts of nitrogen and phosphorus data. The results showed that environmental factors based on the change of amounts of nitrogen and phosphorus did not affect the catastrophic selection level concerning genetic variation and the genetic distances related to the frequencies of enzyme loci of water shield populations.