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하종규(Hah, Chong-Ku),정왕수(Jeong, Wang-Soo),홍수연(Hong, Su-Yeon),장영관(Jang, Young-Kwan),기재석(Ki, Jae-Sug) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.11
본 연구의 목적은 생체역학적 변인을 근거로 하여 후진보법의 전방향 보행(댄스보행)이 후방보행처럼 재활과 걷기운동으로써 가능성을 규명하는 것이다. 실행대상자는 13명의 여성댄스 전문가로 자료수집을 위하여 12대의 적외선카메라와 2대의 지면반력기가 동조되어 사용되었다. 연구결과에 따르면 댄스보행의 보속, 활보장과 양 하지지지기시간은 후방보행보다 크고, 활보폭은 작았으며 관절각범위, 관절모멘트와 관절파워의 최대치 출현 빈도에서 댄스보행이 후방보행보다 더 많았다. 이러한 결과들은 댄스보행이 재활과 걷기 운동에 후방보행에 버금가는 훌륭한 도구임을 판단하는데 충분하다. The purpose of this study was to inverstigate possibility of a forward gait with backward meehanism(dance gait) as rehabilitation and/or walking exercise by means of biomeehanical variables. Thirteen professional women dancers(age, 21,1±1.3 yrs; height, 159.3±7.2 cm; body mass, 45.1±8.4 kg)participated in this study. We found that speed, stride length and double limb support time of a dance gait were more greater than backward gait, but stride width of dance gait less than a backward gait. Maximum RoMs, moments and powers of the lower limb joints on a dance gait were more frequent than a backward dance. These results were judged to be sufficient by the possivility of dance gait as rehabilitatiob and walking exercise
한국 성인의 비스페놀 A 노출과 비만과의 관련성 연구: 제2기 국민환경보건기초조사(2012-2014)
황문영(Moon-Young Hwang),이영미(Young-Mee Lee),정순원(Soon-Won Jung),홍수연(Soo-Yeon Hong),유지영( Ji-Yong You),박충희(Choong-Hee Park) 한국환경보건학회 2018 한국환경보건학회지 Vol.44 No.4
Objectives: Bisphenol A (BPA) has been extensively used in a variety of consumer products, resulting in widespread non-occupational human exposure. It is often detected in the human body. Studies have reported many health effects associated with endocrine and metabolic disruptions, including obesity, diabetes, hypertension, and cardiovascular diseases. This study was performed to explain the relationship between BPA exposure and obesity in the Korean adult population. Methods: The second stage of the Korean National Environmental Health Survey (KoNHES) was conducted from 2012 to 2014 with 6,478 persons participating. Using the results of the survey, we analyzed the exposure levels for BPA and the influence on obesity of BPA. Results: In model 1, the volume-based measure concentration of BPA, total, female and the 30s to 60s age group were positively related with BMI. In model 2, creatinine adjusted as a covariate and positive associations for BPA with BMI were observed in the female group and was marginally significantly associated in low body weight group. In model 3, creatinine adjusted (g/g-creatinine), BPA exposure, and BMI were positively related with sex, in females, and there was a marginally significant association with the low body weight group in the BMI categories. BMI was significantly associated with BPA in the female group in all three models. Conclusion: This study added further evidence that exposure to EDCs, include bisphenol A, is related with obesity among the general population. Given the environmental health concerns over BPA, it is necessary to develop comprehensive measures to reduce BPA exposure.
고온 플라즈마 용융을 통한 비산재의 지속가능한 재활용 적용성 평가 연구
강장현(Jang-Hyun Kang),최명규(Myung Kyu Choi),윤영삼(Young-Sam Yoon),홍수연(Soo-Yeon Hong),박기만(Ki-Man Park),유흥민(Heung-Min Yoo) 한국환경에너지공학회 2022 한국열환경공학회 학술대회지 Vol.2022 No.2
The largest domestic landfill in the Seoul metropolitan area is at capacity and the Ministry of Environment recently announced a ban on direct landfilling of municipal waste beginning in 2026. Therefore, the volume of wastes incinerated and the associated incineration ash are expected to increase. Therefore, in this study, municipal solid waste incineration fly ash (MSWIFA) was selected as a research target because it cannot be recycled in a sustainable recycling technology because of its high loss of ignition and high heavy metal content. It is mostly landfilled as designated waste, unlike bottom ash with a relatively high recycliI1g rate. Samples of MSWIFA were collected from 14 incineration facilities located in the Seoul metropolitan area. In addition, our research on the recycling of MSWIFA included a literature review, the analysis of its basic characteristics, and melting experiments. In the plasma melting process, we used the 100 Kwh plasma torch (50 kg/h) operated at 100 N220 V. The operating temperature of the torch ranged from 5,000 to 10,000°C , and the reactor temperature was maintained at 2,000°C or higher. The melting conditions adjusted for reduction conditions by N₂ gas. Under reduction conditions, the slag and metal layers were separated. Additionally, the water-cooling centrifugal bubbling apparatus reduced the temperature of flue gas and collected dust and sulfides. The flue gas was emitted through the induced draft fan/stack. In the leaching analysis, the results showed that seven heavy metals (Arsenic, Cadmium, Chromium, Copper, Cyanide, Lead, Mercury) from melted MSWIFA slag (MFAS) were not detected along with a chlorine reduction rate of 99.3%. The hazardous heavy metal contents from MFAS met all the level of soil contamination on Soil Environment Conservation Act in South Korea.