Thermal Properties of Poly(trimethylene terephthalate)/ Poly(ethylene terephthalate) Melt Blends

Son, Tae Won,Kim, Kwang Il,Kim, Nam Hun,Jeong, Min Gi,Kim, Young Hun The Korean Fiber Society 2003 Fibers and polymers Vol.4 No.1

The thermal behavior, morphology, ester-interchange reaction of Poly(trimethylene terephthalate) (PTT)/poly(ethylene terephthalate) (PET) melt blends were investigated over the whole composition range(xPTT/(1-x)PET) using a twinscrew Brabender. The melt blends were analyzed by differential scanning calorimetry (DSC), nuclear magnetic resonance spectroscopy ($^{13}{C-NMR}$), and scanning electron microscopy (SEM). Single glass transition temperature ($T_g$) and cold crystallization temperature ($T_cc$) were observed in all melt blends. Melt blends were found to be due to the ester-interchange reaction in PTT/PET blend. Also the randomness of copolymer increases because transesterification between PT and PET increases with increasing blending time This reaction increases homogeneity of the blends and decreases the degree of crystallinity of the melt blends. In PTT-rich blends, mechanical properties decrease with increase of PET content compared with that of pure PTT. And, in PET-rich blends, tensile modulus decreases with increase of PTT content, but tensile strength and elongation is similar to that of pure PET.

Value of Resuscitation Surrogates for Early Goal-directed Therapy in Patients with Severe Sepsis and Septic Shock (초)

Gi Dong Lee,Sun Hui Choi,Jeong Suk Son,Jin Won Huh,Chae Man Lim,Youn Suck Koh,Sang Bum Hong 대한결핵 및 호흡기학회 2010 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.110 No.-

유산소 운동과 단백식이가 흰쥐의 혈중지질, 간기능 및 면역글로불린에 미치는 영향

Gi-Dong Sung(성기동),Won-Mok Son(손원목),Yeong-Ho Baek(백영호) 한국생명과학회 2012 생명과학회지 Vol.22 No.1

본 연구는 4주간의 유산소운동과 단백질 섭취가 흰쥐의 혈중지질, 간기능 및 면역글로불린에 미치는 영향을 구명하기 위하여 실시하였다. 실험동물은 총 24마리를 대상으로 4주간 20-30분씩 14~17 m/min의 속도로 트레드밀을 이용하여 유산소 운동을 실시하였으며, 운동단백식이군(A, n=6), 단백식이군(B, n=6), 운동군(C, n=6), 대조군(D, n=6)으로 분류하였고, 유산소 운동 4주후 혈중지질, 간기능 및 면역글로불린 농도를 측청하여 비교 분석하였다. 본 연구 결과 유산소 운동과 단백질식이를 실시 후 총콜레스테롤(TC)는 운동단백식이군이 유의하게 낮은 것으로 나타났으며, 중성지방(TG)는 운동군이 유의하게 낮았다. 고밀도지단백 콜레스테롤(HDL-C)는 운동단백식이군이 유의하게 높았으며, 저밀도지단백 콜레스테롤(LDL-C)는 운동단백식이군과 운동군이 유의하게 낮게 나타났다. 간기능에서는 운동단백식이군과 단백식이군이 유의하게 높았으며, GPT는 차이가 없었다. 면역글로불린 IgG는 운동단백식이군이 대조군보다 유의하게 높았나, IgA, IgM은 차이가 없었다. 따라서 유산소 운동과 단백섭취는 혈중지질 개선과 간기능 및 면역글로불린 IgG에 긍정적인 영향을 미쳐 심혈관 질환을 예방하고 항체 형성 인자에 영향을 주어 인체의 면역항체 형성에 효과가 있을 것으로 사료된다. The purpose of this study was to analyze the effects of aerobic exercise and a protein diet on serum lipid profiles, liver function, and immunoglobulin levels in rats. The subjects, 24 male Sprague-Dawley rats, were grouped into an exercise with protein diet group (A, n=6), a protein diet group (B, n=6), an exercise group (C, n=6), and a control group (D, n=6). The exercise with protein group trained for 4 weeks (20-30 min/day, speed at 14~17 m/min) and was given a 40% protein diet for 4 weeks. The variables of serum lipid profiles, liver function, and immunoglobulin levels were measured in all of the subjects at the end of the 4 weeks of treadmill exercise. Serum TC and LDL-C levels were significantly decreased in the exercise with protein diet group compared to the other groups and serum HDL-C, GOP, and IgG were significantly higher than in the other groups. However, no significant differences were found for the IgA and IgM levels. In conclusion, aerobic exercise with a protein diet was effective in improving serum lipid profiles, liver function, and immunoglobulin.

Effect of Circuit Training on Aging-related Hormones in Obese Middle-aged Women

Won-Mok Son(손원목),Yi-Sub Kwak(곽이섭),Gun-Do Kim(김군도),Min-Sung Ha(하민성),Song-Young Park(박송영),Gi-Dong Sung(성기동) 한국생명과학회 2017 생명과학회지 Vol.27 No.9

노화 과정에 따라 중년 여성들은 폐경 이후 체력이 저하되기 시작하면서 체지방 증가와 제지방량의 감소로 비만으로 이어지기 쉽고, 이러한 현상은 체내 호르몬의 분비의 변화와 함께 발생된다. 본 연구는 서킷 트레이닝이 비만 중년 여성의 노화 관련 호르몬에 미치는 영향을 구명하기 위해 실시하였다. 대상자 체지방률 30% 이상인 비만 중년 여성 운동군 10명, 대조군 10명 총 20명을 실시하였다. 운동 시간은 준비운동 5분, 본 운동 20분, 정리운동 5분으로 총 30분 주 3회 실시하였으며, 운동 강도는 운동자각도를 이용하여 13~17(약간 힘들다-매우 힘들다)수준으로 실시하였고, 또한 POLAR 심박수 변화량을 측정하여 1~6주는 60~70%HRR (Heart rate reserve), 7~12주는 70~80%HRR로 설정하였다. IGF-1은 운동군이 유의하게 증가하였으며, GH는 운동군이 유의하게 증가하였고, DHEA-S는 운동군이 유의하게 증가하였다. 이상의 결과 서킷 트레이닝이 비만 중년 여성의 노화 관련 호르몬에 긍정적인 영향을 준 것으로 사료된다. Due to aging, the physical fitness of middle-aged women decreases after menopause. This results in increased body fat and reduced lean body mass, both of which can lead to obesity. This phenomenon is accompanied by changes in hormone secretion in the body. The purpose of this study was to analyze the effects of circuit training on aging-related hormones in obese middle-aged women. The subjects were 20 obese middle-aged women. The subjects were divided into two groups: a circuit training group (n=10) and nonexercise control group (n=10). Growth hormone (GH), insulin-like growth factor-1 (IGF-1), estrogen, and DHEA-S were measured before and after the circuit training program. The circuit training group performed circuit training for 12 weeks, three times per week. Exercise intensity was increased gradually from 60% to 80% of heart rate reserve every 6 weeks. In the circuit training group, at the end of the 12-week training program, the IGF-1 levels were significantly increased compared to pre-exercise levels, and they were higher than those of the control group. GH levels were also significantly increased in the circuit training group, but the differences were not statistically significant. DHEA-S was significantly increased in the circuit training group, but the difference was not statistically significant. The results showed that circuit training improved aging-related hormones levels in obese middle-aged women.

자성체 이온교환수지를 이용한 응집공정의 최적화

손희종(Son Hui Jong),노재순(No Jae Sun),김상구(Kim Sang Gu),황영도(Hwang Yeong Do),권기원(Kwon Gi Won),김원경(Kim Won Gyeong) 大韓環境工學會 2004 대한환경공학회지 Vol.26 No.1

영주 무섬마을 주택 내 외래식물현황 -문화재지정 및 비지정 가옥의 비교를 중심으로-

( Jung Won Sung ),( Gi Song Kim ),( Sung Hyuk Park ),( Jin Sun Park ),( Jae Hyun Rho ),( Yong Shik Kim ),( Hyun Kyung Oh ),( Won Ho Lee ),( Hee Joo Son ),( Jin Wook Park ),( Gye Bog Ahn ) 한국전통조경학회(구 한국정원학회) 2014 Journal of Korean Institute of Traditional Landsca Vol.12 No.-

본 연구는 국가지정문화재 민속마을로 지정된 영주 무섬마을을 대상으로 문화재 지정 가옥 및 비지정 가옥 정원 내 식재상태의 비교 분석을 통해 민속마을 외래식물 관리에 필요한 기초자료를 제공할 목적으로 시도되었으며, 주요결과는 다음과 같다. 1. 무섬마을은 전체 472분류군의 소산식물 중 191분류군의 외래식물을 확인함에 따라 외래식물율(Ratio of exotic plant)은 40.5%이다. 3) 2. 가옥 내 관상외래식물은 79분류군, 풍치외래식물 8분류군, 경작외래식물 54분류군 및 귀화외래식물 50분류군으로 귀화율(歸化率, Naturalization Rate: NR)은 10.6%이며, 생활형은 일년생식물이 82분류군(47.7%)으로 월등히 높았다. 3. 문화재지정 가옥과 비지정 가옥 정원의 외래식물을 비교한 결과, 지정 가옥의 총 외래식물은 90분류군(51.7%)인 반면, 비지정 가옥은 총 171분류군(52.3%)으로 비지정 가옥이 지정 가옥에 비해 1.9배의 외래식물을 기록하였다. 이는 비지정 가옥의 높은 상주율과 관상식물 선호도에 기인된 결과로 판단한다. 한편 문화재 지정 가옥은 26분류군(14.9%), 비지정 가옥은 41분류군(24.3%)으로 비지정 가옥의 귀화식물 발생율이 역시 높았다. 4. 문화재 지정가옥은 내?외부 공간 식물상의 격차가 4% 수준으로, 비지정 가옥의 53% 수준에 비해 현저히 낮았는데, 이는 양자 간 가옥형태의 폐쇄성 정도에 따른 정원 내 식재공간면적과 생육조건 그리고 제약을 받지 않는 조건에서 소유주의 정원관과 원예취미가 반영된 결과로 판단한다. The objective of this study was to provide basic data necessary for the management of exotic plants in folk villages through comparative analysis of the planting state of houses designated as cultural assets and houses non-designated as cultural assets in Museom Village, Youngju City, which was designated as National Cultural Heritage and the results was summarized as follows: 1. In Museom Village, 191 taxa of exotic plants were recorded among 472 taxa of endemic plants. Thus, the ratio of exotic plant recorded as 40.5%. 2. For the exotic plants inside the houses, 79 taxa of ornamental exotic plants, 8 taxa of landscape exotic plants, 54 taxa of cultivated exotic plants, and 50 taxa of naturalized exotic plants were recorded, suggesting the Naturalization Rate(NR) of 10.6%. The life-from showed that annual plants with 82 taxa(47.7%) comprised the highest proportion. 3. The exotic flora were compared between the houses designated as Cultural Assets and houses non-designated as Cultural Assets. The results showed that there were 90 taxa(51.7%) of exotic plants in the house gardens designated as Cultural Assets and 171 taxa(52.3%) in the house gardens non-designated as Cultural Assets, suggesting that the number of exotic plants in the house gardens non-designated as Cultural Assets was 1.9 times more than those in the house gardens designated as Cultural Assets. That is considered attributable to the high rate of residence in the house gardens non-designated as Cultural Assets and preference towards ornamental plants. Meanwhile, 26 taxa(14.9%) were recorded in the house gardens designated as Cultural Assets and 41 taxa(24.3%) were recorded in the house gardens non-designated as Cultural Assets, which suggest that the naturalized plants are more likely to be occured in the house gardenss not-designated as Cultural Assets. 4. The number of plant taxa in the house gardens designated as Cultural Assets showed a difference of 4% between interior space and exterior space which is significantly lower than the difference of 53% showed by the number of plant taxa in the house gardens not designated as Cultural Assets. This result is considered to reflect the horticultural hobby and viewpoint of garden owners towards gardens, given the planting space, growth conditions, and unrestrictive conditions in gardens based on the extent of closed state of both types of houses.

Session Ⅱ : Analytical Biochemistry : Effects of Aloe Components on Skin Cell Proliferation

Seong Won Choi,Byung Hwa Son,Yong Sook Son,Seung Gi Lee,Myung Hee Chung 생화학분자생물학회(구 한국생화학분자생물학회) 1994 추계학술대회집 Vol.- No.-

국내 육성 최신품종 사과의 자가불화합성 유전자형 구명

윤원호(Won Ho Yoon),손광민(Kwang Min Son),김기훈(Gi Hoon Kim),권순일(Soon Il Kwon),최철(Cheol Choi) 한국원예학회 2012 한국원예학회 학술발표요지 Vol.2012 No.5

The Effect of Surface Coating on LiNi_0.6Co_0.1Mn_0.3O₂ Cathode Material for Lithium Secondary Battery by PEDOT-PEG Block Copolymer

Yoo, Gi-Won,Jang, Byeong-Chan,Kim, Cheong,Son, Jong-Tae American Scientific Publishers 2017 Science Of Advanced Materials Vol.9 No.5

Effect of Structural and Electrochemical Properties of Yttrium-doped LiNi0.90Co0.05Al0.05O2 Electrode by Co-precipitation for Lithium Ion-batteries

Yoo, Gi-Won,Tae-Jun Park, Tae-Jun,Son, Jong-Tae Journal of New Materials for Electrochemical Syste 2015 JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTE Vol.18 No.1

<P>In this study, the LiNi0.90−xCo0.05Al0.05YxO2 (x = 0, 0.025, 0.075) have been synthesized by a co-precipitation and solid-state reaction method. The effect of the Y3+-doping on the structural and electrochemical properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and by electrochemical and impedance spectroscopy (EIS). From the results of the XRD pattern changes between before and after the doping, less cation mixing and more ordered hexagonal structure were observed for the LiNi0.875Co0.05Al0.05Y0.025O2 cathode and the cell delivered an initial discharge capacity of 195.8 mAhg-1 and was 10.2 mAhg-1 higher than the pristine cell by yttrium doping effect. High rate capability studies were also performed and showed the capacity retention of 95, 81.7 and 63.8 % at 0.2, 1.0 and 5.0 C-rate, respectively during the cycling. The impedance spectra showed that the charge transfer resistance for the pristine cathode grew significantly, while that for the Y3+-doped cathode decreased during cycling. It was concluded that the capacity fading for LiNi0.90Co0.05Al0.05O2 mainly due to the cation mixing, partially contributed by the impedance growth and by doping the pristine material with Y3+, cation mixing can be efficiently suppressed, which results in the improved rate capability.</P>