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丁洛珍 中央醫學社 1964 中央醫學 Vol.6 No.5
Today, faith in ,the tuberculin test is again vacillating , as it becomes overwhelmingly evident that tubercle bacillus is not the only cause of tuberculin sensitivity in human beings. There has been increasing evidence that, some of the weak reactions to the standard first dose are generally harmless infection with numerous mycobacteria like atypical acid-fast bacilli. The author formulated the. hypothesis that the frequent variations of tuberculin allergy, especially in the weak reactors, may due to the reinfection of those atypical acid-fast bacilli other than tubercle bacilli. To test the hypothesis, experiments have been carried out to determine whe ther early reconversion will or will not occur after vaccinations of various atypical acid-fast bacilli were given to those who had become negative reactors after BCG vaccination, The results are as follows; 1. The vaccination of photochromogens, non-photochromogens, and scotochromogens to the reversals of BCG vaccination caused the early reconversion of tuberculin allergy at a markedly higher rates and with stronger reactions than the control group and the group vaccinated with mycobacterium smeginatis orphlei. The rate of early reconversion revealed higher in the group those vaccinated with photochromogens or non-photochromogens than those vaccinated with scotochromogns, 3. Those vaccinated with BCG revealed higher rate in early reconversion than those vaccinated with photochromogens 4 Early reconversion of tuberculin allergy with the vaccinations of various atypical acid-fast bacilli revealed higher positive and stronger reactions in the group of a. vaccinated within shorter time interval after BCG vacicnation, b. those vaccinated previosly with BCG which contained a larger numbe bacilli, c. those vaccinated repeatedly with BCG.
丁洛珍,申龍達 慶北大學校 醫科大學 1959 慶北醫大誌 Vol.2 No.1
This paper deals with a survey performed for the purpose of determining the ro^le of remained stool around the anus after defecation as an infectious source of parasites. Author examined the kinds and the number of eggs of parasites with the Scotch Cellulose Tape Method among the 767 primary school children. Results as following: 1. Relatively large number of eggs of Ascaris, Oxyuris and Trichocephalus was found with the remained stool around the anus and the number of egg is decreasing as time elapses after defecation. Therefore, recognition of anal source in the parasites infection is of great significance. 2. Over 30 times more Oxyuris were discovered with the Scotch Cellulose Tape Method as compared with the Concentration Technics, therefore it is recommandable to employ the Scotch Cellulose Tape Method for the Oxyuris examination.
내마모성이 향상된 Monomer Casting Nylon 6의 제조
정낙진 한국공업화학회 2002 응용화학 Vol.6 No.2
To enhance the antiabrasion property, various lubricant, such as montan wax, ester wax and sasol wax, crystal wax and PE modified wax were added to monomer casting(MC) nylon 6. They showed an excellent abrasion resistance, especially in a 3wt% ratio MC nylon 6. The addition of these lubricants resulted in increasing the ten times abrasion resistance. In addition, their tensile strength increased from 810 to 850 kg_f/㎡ by addition of 0.08wt% of whisker as a reinforcing agent. And also, their molecular weight, modulus, elongation, impact strength and hardness exhibited 70,000~150,000, 2,500 kg_f/㎡, 35%, 25 kgcm/㎠ and 115, respectively.