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Research on Strategies for Adapting to Future Scientific and Technological Changes
Dong-Sik Kang,Tae-Yeop Noh,Jun-Sub Lee,Jeong-Min Ju,Ho-Hyeon Lee,Sung-Hyun Noh 사단법인 국제융복합연구원 2024 International Journal of Convergence Vol.1 No.1
Science refers to systematic knowledge aimed at discovering universal truths or laws, while technology refers to the methods and means of applying science to make human life more useful. When these two concepts are combined, science and technology refer to the means of applying natural sciences, applied sciences, engineering, and the like to make human life more useful. In this way, science and technology are the key driving forces behind the transformation of future societies, and they are the most important assets for our country, which lacks natural resources, to achieve the desired future. Furthermore, the industrial revolutions that have brought about innovative scientific and technological advancements and changes in social and economic structures have demonstrated how countries leading in science and technology have prospered. As evidenced by the COVID-19 pandemic, countries that have prepared for the future and those that have not show clear differences in their ability to cope with unforeseen crises. Therefore, the purpose of this study is to investigate strategies for responding to future changes in science and technology. Results : Combing hair was improved and AROM and contraction time of shoulder flexor and external rotator increased. Conclusion : we can be found that closed kinetic chain exercise and PNF approach was effective way to improvement of upper extremity function with hemiparetic patient after stroke.
( Tae Yeop Kim ),( Sung Yeon Won ),( Shin Hye Kang ),( Ur Ryong Cho ) 한국고무학회 2017 엘라스토머 및 콤포지트 Vol.52 No.1
The optimum mixing conditions of silica and silane containing rubber composites were evaluated by investigating the properties of rubber composites prepared with a silica composition of 10, 20, 40, 60, and 80 g, respectively. The crosslinking rate decreased with increasing silica content, with he promoters being adsorbed on the silica surface with in the rubber composite. As a result, the increase in crosslinking time resulted in the destruction of the silica structure. The increase of the bound rubber content due to the destruction of the silica structure inhibited the chain motion of the polymer molecules and reduced the cohesion of the silica itself. Finally, the increase of silica content showed the increase of hardness, tensile strength, and storage modulus of rubber composites.
Evaluation of anti-inflammatory activity of Asparagus officinalis L. root extract
Sun-Yeop Lee,Min Hong,Joon-Hee Han,Da-Hye Choi,Hyeon-Ju Lee,Jae-Hee Lee,Hae-Ju Kang,Tae-Hyung Kwon,Soo-Ung Lee 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10
Asparagus officinalis L. is one of the most widely used agricultural products all over the world. However, in terms of production cost and production, asparagus is cultivated through facility cultivation, and high production cost is required in a small area, so research on the availability of by-products is required. In this study, the anti-inflammatory activity was measured by preparing an extract from the root, a by-product of asparagus production. As a result of measuring the antioxidant activity of Asparagus officinalis L. root water extracts (ARW), the DPPH radical scavenging activity was measured to be 32.62±1.11% at the highest concentration of 1000 μg/mL. As a result of measuring the effect of ARW on RAW 264.7 cells induced by LPS treatment for anti-inflammatory activity evaluation, NO concentration was measured to be 77.12±0.66 (% of LPS) at 500 μg/mL concentration, it was also measured to inhibit the mRNA expression of COX-2, iNOS and IL6.
강태규 ( Tae Kyu Kang ),조유식 ( You Sik Cho ),지홍엽 ( Hong Yeop Jee ),이은진 ( Eun Jin Lee ),김의용 ( Eui Yong Kim ) 서울시립대학교 산업기술연구소 2006 산업기술연구소논문집 Vol.14 No.-
Generally, diffusion coefficient is a function of temperature and molecular weight of gas molecules. In this study, diffusion coefficients of methyl alcohol, ethyl alcohol and n-propyl alcohol were measured in air by varying system temperature. Mass transfer apparatus for measureing gaseous diffusivity was used for the experimental investigation. Temperatures were 30℃, 40℃, 50℃, and diffusion coefficients for each temperature were obtained. As a result, gaseous diffusion coefficients increase with increasing the system temperature. However, the diffusion coefficient decreases as the molecular weight of liquid increases. It was found that liquid vapor pressure and gaseous diffusion coefficient has a general trend: the diffusion coefficient is increasing with increasing vapor pressure.