티타늄 스폰지를 이용한 수소 흡장 특성

이성호,김광락,안도희,유재형,백승우,손종식,임성팔,정홍석 한국공업화학회 2001 응용화학 Vol.5 No.2

Hydrogen absorption experiments were carried out by the titanium(Ti) sponge for investigating the characteristics of hydrogen absorption. From experimental results, Ti sponges showed the high hydrogen absorption capacity inspite of low reaction temperature. The H/M which mean the capacity of hydrogen absorption was measured 2.0 for Ti sponge in the experimental condition of 25℃. The effects of the reaction temperature, activation conditions, and the presence of helium in the hydrogen were investigated.

건축현장작업의 Human Factors 적용에 관한 연구

김상렬,박일철,박종권,박종근,이영섭 한국산업안전학회 1998 한국안전학회지 Vol.13 No.1

In current domestic constriction field, several factors influencing the safety for field workers are various due to the size and complexity of construction works involved. Among the factors, the age is the important one, because the average age of workers is getting older due to the 3D phenomena in construction fields. The safety for workers of all ages is important, but especially safety for the old, is more important. Thus, the fundamental techniques for placement of field workers with adequate safety corresponding to complexity and hard works are investigated through analyzing fatigue and heart rate of individual worker, especially for the old.

Mycobacterium Avium - in tracellulare Complex 와 M . Fortuitum 에 의한 폐항산균증(肺抗酸菌症) 3예

김상재,홍수표,배길한,김성진,진병환,정충모 대한미생물학회 1982 大韓微生物學會誌 Vol.17 No.1

Two cases of pulmonary disease in a 54 year-old female and a 70 year-old male patient due to Mycobacterium avium-intracellulare complex (MAIC) and a case of pulmonary infection in a 69 year-old male patient due to M fortuitum (MF) were found recently in this institute. All three patients bad a long history of anti-tuberculous chemotherapy because they were initially diagnosed as pulmonary tuberculosis. A 70 year-old male patient infected with MAIC had an unsuccessful chemotherapy history of isoniazid (INH), para-aminosalicylic acid (PAS) and streptomycin (SM) with an incomplete, temporary, symptomatic improvement, for three years since 1964 when he was first diagnosed as pulmonary tuberculosis on physical examination. A 54 year-old female patient infected with MAIC also had an unsuccessful chemotherapy history with the various anti-tuberculous drugs since 1958. Both patients discharged large number of MAIC in their sputum specimens for at least more than one year, but no M tuberculosis at all. A 69 year-old male patient infected with MF was diagnosed as moderately advanced pulmonary tuberculsis in 1977. Combined chemotherapy with INH+PAS+pyrazinamide (PZA) improved his clinical symptoms, however, his chest radiograph was deteriorated again in 1980 one year after he stopped therapy. Therefore he started chemotherapy again with INH+ethionamide (TH)+cycloserine(CS) but no improvement was noticed. MF was cultured from his sputum in August 1983 and he continuously discharged the same baeilli until last examination of January l982. Whether all three patients were initially infected with nontuberculous mycobacteria or complicated with predisposing tuberculosis was not clear because there were no reliable bacteriological Examination records.

스퍼터링법으로 제작된 TiO2 박막의 광촉매 특성에 관한 연구

최진호,이원재,김장규,신동훈,장광필,남궁규철 대한금속재료학회(대한금속학회) 1998 대한금속·재료학회지 Vol.36 No.9

TiO₂ films deposited on glass were prepared by plasma sputtering method. The dependence of structural properties on the deposition conditions and the photocatalytic degradation of methylene blue were investigated. When the oxygen partial pressure was higher than 5%, as-deposited TiO₂ films exhibited an almost amorphous structure under DC plasma condition. A transition at which metallic mode deposition(Ti) changed to dielectric mode deposition(TiO₂), was observed at the 5∼10% oxygen partial pressure under RF plasma condition. The amorphous structure changed to anatase structure by heat treatment at 400℃ for 4 hours. Crystallized anatase structure had a preferred orientation along 〔101〕 direction. For 150 min of photocatalytic degradation, the concentration of methylene blue was reduced by half.

TiNi 가 섬유가 TiNi (Co)/Al 형상기억복합재료의 피로균열전파에 미치는 영향

박영철,윤두표,김순국,이준희,이규창 대한금속재료학회(대한금속학회) 1999 대한금속·재료학회지 Vol.37 No.5

In this paper, TiNiCo/Al shape memory composites were fabricated by powder metallurgy method. TiNi and TiNiCo were used as fiber for reinforcement. To investigate the fatigue crack propagation behavior due to the compressive residual stress which exists in the composites, fatigue test was performed at room temperature and above the inverse transformation temperature A_f of TiNi and TiNiCo shape memory alloy. Results are as follows; At 363 K, both composites have lower fatigue crack propagation rate than pure matrix in the same ΔK area and the fatigue crack propagation of TiNi/Al composite is lower than that of TiNiCo/Al composite.

요통 예방을 위한 요추부하 평가에 관한 연구

양성환,김대성,박범,갈원모,강영식 한국산업안전학회 1998 한국안전학회지 Vol.13 No.4

The objective of this study is to conduct the prevention method using electromyography that is to resist the strain on L5/S1 disc and to measure the heart rate for the prevention of low back pain during lifting. EMG signals and heart rate were analyzed under the condition of fixed vertical factor (20∼80㎝), two horizontal factors (35㎝, 55㎝), and two weight factors (10㎏, 25㎏) 2 times per minute for each lifting task. Eight healthy male workers performed nine-step stretching exercises which were intensified back power at the L5/S1 disc for six months. After completion of the two trials, the results were compared. The results of this analysis show that EMG signals have more an effect on the weight than the horizontal factors similar to those analyzed previous study, and are decreased. Therefore, those exercises presented very efficient. Also, there are not statistically significant differences on the analysis result of heart rate between weight factors.

유망 중소기업의 안전관리 실태와 대책에 관한 연구

김용수,태순호,명노풍 한국산업안전학회 1999 한국안전학회지 Vol.14 No.2

Currently, the consumer pattern is directed to small quantity and high variety these days. World market is led by technological innovations and changes rapidly. To survive in this environment, the raising of small and medium enterprises is highly desirable. In the context of nationwide restructuring, competitive medium and small industries which are in good financial status should lead the nation's economy. But general ignorance of the safety issues could lead to a miss management of this industry in this field. In this study, actual condition and improvement of safety management are as follows; We have to 1) find out the factors which endangers this industry, and set a proper guideline for safety management. 2) encourage safety management of these industries by themselves, and advertise and provide technical support for using PC and internet. 3) set a higher standard of safety issue when accrediting a prospective medium and small industry, and have a firm control of this issue once accredited. 4) supply more governmental financial aids to terms of safety issues for medium and small industries.

의(義)와 이(利)의 관계에 관한 일 고찰 : 대종경 인도품 7장을 중심으로

김낙필 한국원불교학회 1999 圓佛敎學 Vol.4 No.-

제 3형 과비질단백혈증 ( TypeⅢ Hyperlipoproteinimia ) 의 1증례보고와 원발성과비질단백혈증의 문헌고찰

김영표,임철완 대한피부과학회 1974 大韓皮膚科學會誌 Vol.12 No.4

A stout and obese fourty five year-old Korean man was affected with hyperlipoproteinemia type III. His skin lesion showed yellowish papular eruptive xanthomas with erythematous halo located chiefly on the trunk and extensor aspects of the extremities including both palms. In addition to the skin lesion he showed pea-sized cervical lymphnode swellings, slightly tessellated fundi and, on ECG, premature ventricular contraction. Otherwise no specific findings were seen. The laboratory examinations showed increases of both serum cholesterol and triglycerides, increased fasting blood sugar level and abnormal glucose tolerance curve with turbid color of fasting blood serum which had been kept standing at 4C for 24 hours. On the paper electrophoresis $quot;broad beta band$quot; blending with the pre-beta area was noted. The authors discussed laboratory characteristics, clinical manifestations and differential diagnosis of primary hyperlipoproteinemia on each type with review of the literatures of the disease.

항생제에 대한 세균학적 감수성시험방법에 관한 비교실험 : Tetracycline , Neomycin 및 Colistin

박필원,김영자 대한미생물학회 1974 大韓微生物學會誌 Vol.9 No.1

A comparative study was performed with 176 cultures of Salmonella organisms on tetracyline, neomycin and colistin in order to find out the re1ationship between the results obtaiaed from the Ericssons single disk method and the tube dilution method of antibiotie sensitivity tests which may be carried out in many hospital laboratories. With tetracycline, thirty-three out of 163 cultures of Salmonella typhi were found to be either sensitive or moderate sensitive by meaas of the disk method and thirty one (ca 94%) out of the thirty three cultures showed less than I. 0㎍ of the Minimal Iahibitory Concentretions (MIC) in the tubedilution tesis, which mean that there were a quite good agreement between the two methods. With neomycin, a hundred and five out of 163 S.typhi werc appeared to be either sensitive or moderate sensitive by means of Ericssons single disk method, among which 103 cultures showed less than 10. 0 ㎍ MIC in the tubedilution method. And also there was a quite correlative pet- terns observed in theesult of testing with 13 salmoaella cultures other than S. typhi. With colistin, it was hard to observe any particular tendency in the distribution of plotting for 148 cultures showing less the 18 mm is the inhibiting zone diameters between MIC and disk sensitivity patterns except the fifteen, cultures out of 176 salmanella, which appeared to be sensitive in the single disk method and showed less than 1. 0㎍ MIC in the tube dilution method.