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유사한 전자상태를 가지는 타이타늄 합금의 영률에 베타 안정화 원소 함량이 미치는 영향
유가영 ( Ga Young Yoo ),박찬희 ( Chan Hee Park ),홍재근 ( Jae Keun Hong ),김승언 ( Seong Eun Kim ),강남현 ( Seong Eun Kim ),염종택 ( Jong Taek Yeom ) 대한금속재료학회(구 대한금속학회) 2013 대한금속·재료학회지 Vol.51 No.4
Previously, Gum Metal (Ti-24(Nb + Ta + V)-(Zr, Hf)-O (at%)) exhibiting an ultralow Young`s modulus, ultrahigh strength and super elasticity was developed by Saito et al., who proposed that three electronic magic numbers, an average electron/atom (e/a) ratio of 4.24, an average bond order (Bo) of about 2.87, and an average “d” electron-orbital energy level (Md) of about 2.45 eV, should be satisfied simultaneously to obtain such “super” properties. The purpose of this study was to find new alloy systems possessing those properties and to examine the effect of beta equivalent content ([Mo]eq) on Young`s moduli of new alloys having the same three electronic numbers mentioned above. It was found that not only three electronic numbers but also [Mo]eq should be considered to obtain a similar Young`s modulus and hardness with respect to the Gum Metal.
洪英瑾 水原大學校 1987 論文集 Vol.5 No.-
Since man is surrounded by numerous chemicals, in many of which the toxicity risk is unknown, there is an urgent need to identify rapidly and cheaply their mutagenicity in order to screen for potential carcinogens. Recently the Ames test has been chosen as the standard test in determining the mutagenic activity of a compound. It is the purpose of this study to identify intermediates which can safely be incorporated into dyes, specifically those used in textile industries.
洪英瑾 수원대학교 산업기술연구소 1997 산업기술연구소논문집 Vol.12 No.-
Solutions of cellulose/rosin in DMAc/LiCI were prepared and spun to fibers in methanol. The tenacity of the fiber was comparable to that of polyester filber and this indicates that rosin acts as a reinforcer rather than a softener. These fibers as rubbed together sounds whisper like cricket chirp or silk scroop.
폴리아크리로니트릴의 합성에 있어서 다구찌 방법을 이용한 중합 최적조건에 관한 연구
홍영근 수원대학교 산업기술연구소 1990 산업기술연구소논문집 Vol.5 No.-
In this study for the optimization of polyacrylonitrile(PAN) synthesis via solution polymerization Taguchi method which is a statistical analysis used in industry widely was applied to look for the variation of molecular weight depending on the concentration of AN(acrylonitrile), temperature, amount of DMSO(dimethyl sulfoxide), and concentration of AIBN which was used as a initiator. The result of experiments was distribution-analyzed using SPSS statistic package which was designed by Taguchi. Statistics showed that as the temperature and amount of AN increased the molecular weight decreased, wherease the molecular weight went up as the concentration of initiator decreas
홍성찬,함용기,김영빈,박병근,정동혁,이정윤,권성택 圓光大學校 附設 體力科學硏究所 2003 體力科學硏究 Vol.26 No.2
The purpose of this study is to elucidate the effects of regular swimming exercise on blood lipoprotein metabolism and leptin. In this study, swimming(HRmax 50-75%, 60min/day, 5day/week) was performed and 18 were participated for study during 16 weeks. They were divided into two groups, one group as experimental group(n=9) and the other as control group(n=9). A measured factors were TC, TG, HDL-C, LDL-C and leptin.. All data were expressed as mean± standard deviation by using spss package program(win 9.0), one way anova and independent t-test was used to analyze the difference of exercise duration(0week, 8week, 12week, 16week) between groups. For all statistics performed statistical significance was set at p<.05. After exercise intervention, TC, TG, HDL-C, LDL-C and leptin were found to have more significant effects in the experimental group than control group. This results indicated regular swimming exercise training is beneficial to prevent and treat cardiovascular disease and obesity.
Spheroid 조합자극치료 적용이 신체구성에 미치는 영향
홍성찬,김영빈,정동혁,박병근,김유성,이성진 원광대학교 체력과학연구소 2008 體力科學硏究 Vol.30 No.1
The present study aims to explore the effects of applying spheroid-combined stimulating therapy on body composition. For this aim. 20 persons were selected as subjects and 10 of them each were assigned to the experimental group and control group, respectively. The experimental group was applied a 12-week combined stimulating therapy and changes in physical constitution of the members were measured before application and 4, 8 and 12 weeks after application. From the study, following conclusions could be drawn: First, body weights of the experimental group decreased from 59.9kgs before application of the spheroid-combined stimulating therapy to 57.2kgs 12 weeks after application, no significant but 4.51% change. Second, body fats of the experimental group changed from 18.8kgs before application to 16.4kgs 12 weeks after application, no significant but 12.77% reduction. Third, % fats of the experimental group decreased from 31.2% before application to 28.6% 12 weeks after application, no significant change but 8.33% reduction. Fourth, body mass index(BMI) of the experimental group decreased from 23.23 kg/㎡ before application of the therapy to 21.43kg/㎡ after application, no significant but 8.03% reduction. As seen above, the 12-week application of the spheroid-combined stimulating therapy produced no significant changes in physical constitution as physical exercise did, but improved physical constitution by reducing certain amount of boy weight, body fat, % fat and BMI. In order to detect more positive and significant changes in physical constitutions, continued studies and clinical experiments should be performed to more diverse subjects using technically reinforced equipment for spheroid-combined stimulating therapy.
홍성찬,김영빈,박병근,정동혁,이정윤,김유성 圓光大學校 附設 體力科學硏究所 2005 體力科學硏究 Vol.28 No.-
The Purpose of this research is to examine the effect of the aerobic exercise duration on cardiorespiratory function and body fat. Total 14 divided into two groups 7, for the control group and the other for the experimental group 7. The subjects of experimental group had 8 weeks aerobic program in the given intensity, during which the changes in cardorespiratory function and body fat were measured three times, at each end of 0th, 8th week. The research is comcluded as follows. 1. After 8 Weeks, aerobic exercise brought the decrease of maximum HR and the increase of VE with statistically significant(p<.05). 2. Aerobic exercise brought along the change of fat, especially the decline of the rate of fat and the amount of fat. In conclusion, aerobic exercise helps overweight women to reduce their weights and the amount of fat and to get rid of elements that cause various geriatric diseases. Therefore, overweight women as well as common adults are advised to take aerobic exercises
홍영근 수원대학교 산업기술연구소 2003 산업기술연구소논문집 Vol.18 No.-
The purpose of this study was to investigate a way to prepare a thermoplastic elastomer by means or a compatibilizer for composites of ground tire rubber and commingled waste plastics. The results indicated that the way would be probable if a compatibilizer is used appropriately. The composites couldn't be differentiated on the point of tensile strength. However as the compatibilieizer is added both the tensile strength and impact strength considerablely increased to 25% and 272%, respectively.
의료용 조합자극기(HAPPY DREAM HM-206DB) 적용이 동결견 환자의 통증과 관절가동범위에 미치는 영향
홍성찬,김영빈,박병근,김유성,이성진,정동혁 원광대학교 체력과학연구소 2008 體力科學硏究 Vol.30 No.1
The purpose of this study is to find out the effectiveness of the HAPPY DREAM HM-206DB applied to the patients with Frozen Shoulder by measuring, assessing and analyzing the changes in pain and range of motion(ROM). Surveyed from Mar. 2007 to Dec. 2007 were 10 patients suffering from Frozen Shoulder. After HAPPY DREAM HM-206DB, the pain were measured and analyzed by means of MPQWL, VAS-I and VAS-U, while ROM was measured and analyzed by using Goniometer. The major findings from this study are as follows; 1. There was significant decrease in the MPQWL after HAPPY DREAM HM-206DB applied(p<.001). 2. There was significant decrease in the VAS-I(intensity of pain) after HAPPY DREAM HM-206DB applied(p<.001). 3. There was significant decrease in the VAS-U(unpleasantness of pain) after HAPPY DREAM HM-206DB applied(p<.001). 4. There appeared, however, significant increase in ROM(abduction, external and internal rotation) after HAPPY DREAM HM-206DB applied(p<.001). From the above outcomes, it was revealed that HAPPY DREAM HM-206DB application has proven to reduce the pains, exercising huge influence to increase ROM. It is, therefore, suggested to continue and expand the study on the cure of Frozen Shoulder and to motivate patients, rehabilitation specialists, and health management specialists etc. to consider HAPPY DREAM HM-206DB application as safest and most efficient pain remedy.