Effects of Plant Growth Regulators on Physiology of Germinating Panax ginseng Seed

Son Eung Ryong,Park Won Mok,C,Pertzsch 한국작물학회 1979 한국작물학회지 Vol.24 No.1

Control of Structural and Electrical Properties of Indium Tin Oxide (ITO)/Cu(In,Ga)Se₂ Interface for Transparent Back-Contact Applications

Son, Yu-Seung,Yu, Hyeonggeun,Park, Jong-Keuk,Kim, Won Mok,Ahn, Seung-Yeop,Choi, Wonjun,Kim, Donghwan,Jeong, Jeung-hyun American Chemical Society 2019 The Journal of Physical Chemistry Part C Vol.123 No.3

<P>Development of transparent-conducting oxide (TCO) back contact for Cu(In,Ga)Se<SUB>2</SUB> (CIGS) absorber is crucial for bifacial CIGS photovoltaics. However, inherent GaO<SUB><I>x</I></SUB> formation at the TCO/CIGS interface has hampered the photocarrier extraction. Here, by controlling the Na doping scheme, we show that the hole transporting properties at the indium-tin oxide (ITO)/CIGS back contact can be substantially improved, regardless of the GaO<SUB><I>x</I></SUB> formation. Na incorporation from the glass substrate during the GaO<SUB><I>x</I></SUB> forming phase created defective states at the interface, which allowed efficient hole extraction from CIGS, while post Na treatment after GaO<SUB><I>x</I></SUB> formation did not play such a role. Furthermore, we discovered that an almost GaO<SUB><I>x</I></SUB>-free interface could be made by reducing the underlying ITO film thickness, which revealed that ITO/CIGS junction is inherently Schottky. In the GaO<SUB><I>x</I></SUB>-free condition, post-Na treatment could eliminate the Schottky barrier and create ohmic junction due to generation of conducting paths at the interface, which is supported by our photoluminescence analysis.</P> [FIG OMISSION]</BR>

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.

Successful mitral repair in dogs by mitral annuloplasty using Hegar dilator: two case reports

Won-Jong Lee,Junyoung Kim,Chang-Hwan Moon,TaeHeum Eom,DongJu Son,Seungmin Lee,Haebeom Lee,Seong-Mok Jeong,Dae-Hyun Kim 대한수의학회 2022 Journal of Veterinary Science Vol.23 No.1

Mitral regurgitation (MR) is the most common heart disease in small-breed dogs. Mitral repair, which comprise artificial chorda tendineae implantation and mitral annuloplasty, has become the mainstay of treatment in the veterinary field. We report on two small dogs who underwent mitral repair surgery for MR. A Hegar dilator was used during mitral annuloplasty for accurate and reproducible surgery. In both cases, mitral regurgitant flow almost disappeared after surgery, and clinical signs improved. The treatment regimen was terminated 3 months after the surgery. We concluded that using a Hegar dilator may facilitate mitral valve repair surgery.

Effect of Obesity on Blood Pressure and Arterial Stiffness in Middle-Aged Korean Women

Son, Won-Mok,Kim, Do-Yeon,Kim, You-Sin,Ha, Min-Seong Korea Centers for Disease Control and Prevention 2017 Osong Public Health and Research Persptectives Vol.8 No.6

<P><B>Objectives</B></P><P>Our study aims to provide basic scientific data on the importance of obesity management in middle-aged Korean women by analyzing its effects on blood pressure and arterial stiffness. In addition, we examined the correlations of these two parameters.</P><P><B>Methods</B></P><P>The study participants were 40 middle-aged female volunteers, who were classified into obesity group (n = 20) and normal weight group (n = 20). Statistical analysis was performed using independent <I>t</I>-test and the Pearson correlation coefficient was used to correlate blood pressure and arterial stiffness.</P><P><B>Results</B></P><P>This study evaluated the systolic blood pressure, diastolic blood pressure, and pulse wave velocity (PWV). These results were higher in the obesity group than the normal weight group. Furthermore, blood pressure and arterial stiffness (PWV, augmentation pressure) were static correlated.</P><P><B>Conclusion</B></P><P>Obesity is closely related to blood pressure and arterial stiffness. Therefore, indices for blood pressure and arterial stiffness may play a vital role in predicting and preventing obesity and its sequelae.</P>

Analysis and Compensation of Current Measurement Errors in a Doubly Fed Induction Generator

Son, Yung-Deug,Im, Won-Sang,Park, Han-Seok,Kim, Jang-Mok The Korean Institute of Electrical Engineers 2014 Journal of Electrical Engineering & Technology Vol.9 No.2

It is necessary to measure the current of rotor for controlling the active and reactive power generated by the stator side of the doubly fed induction generator (DFIG) system. There are offset and scaling errors in the current measurement. The offset and scaling errors cause one and two times current ripples of slip frequency in the synchronous reference frame of vector control, respectively. This paper proposes a compensation method to reduce their ripples. The stator current is variable according to the wind force but the rotor current is almost constant. Therefore input of the rotor current is more useful for a compensation method. The proposed method adopts the synchronous d-axis current of the rotor as the input signal for compensation. The ripples of the measurement errors can be calculated by integrating the synchronous d-axis stator current. The calculated errors are added to the reference current of rotor as input of the current regulator, then the ripples are reduced. Experimental results show the effectiveness of the proposed method.

Combined exercise reduces arterial stiffness, blood pressure, and blood markers for cardiovascular risk in postmenopausal women with hypertension

Son, Won-Mok,Sung, Ki-Dong,Cho, Jae-Min,Park, Song-Young by The North American Menopause Society. 2017 Menopause Vol.24 No.3

<P>Conclusions: These findings indicate that 12 weeks of combined exercise training improves arterial stiffness, BP, ET-1, blood nitrite/nitrate, functional capacity, and body composition in postmenopausal women with stage 1 hypertension. Thus, this study provides evidence that combined exercise training is a useful therapeutic method to improve cardiovascular health which can reduce cardiovascular disease risk in postmenopausal women with hypertension.</P>

The Effects of Aerobic Exercise Training on Blood Lipid Profiles, Fibrinolytic Activities, and Nitric Oxide Levels in High-fat-diet induced Rats

Won-Mok Son(손원목),Do-Yeon Kim(김도연),Ki-Dong Sung(성기동),Yi-Sub Kwak(곽이섭),Yeong-Ho Baek(백영호),Song-Young Park(박송영) 한국생명과학회 2015 생명과학회지 Vol.25 No.12

본 연구는 생후 3주령 Sprague-Dawley계 수컷 흰쥐를 16마리로 6주간 고지방식이를 통해 비만을 유도 후 운동군(8마리), 대조군(8마리)로 구분하였다. 운동기간 중 운동군과 대조군 모두 고지방식이를 섭취시켰다. 1주차는 14-15 m/min의 속도로 1일 30분, 2, 3주차는 15-16 m/min의 속도로 1일 35분, 4주차는 16-17 m/min의 속도로 1일 40분으로 주 6회 실시한 후 다음과 같은 결론을 얻었다. TC, TG는 운동군이 대조군 보다 유의하게 낮았으며, HDL-C는 운동군이 대조군 보다 유의하게 높았다. 혈전용해능, 산화질소는 운동군이 대조군 보다 유의하게 높았다. 이상을 종합하여 볼 때 유산소 운동이 혈관기능개선에 도움을 주는 것으로 나타났다. Although exercise training has been utilized to improve vascular function in animals and humans, the impact of moderate intensity exercise training on fibrinolytic activities and nitric oxide (NO) bioavailability has not been well documented. Therefore, the purpose of the current study was to examine the impact of moderate intensity aerobic exercise training on fat mass, blood lipid profiles, fibrinolytic activity, and NO levels in high-fat-diet induced rats. The body weight, fat mass, blood lipid profiles, fibrinolytic activity, and nitrite/nitrate were measured pre- and postexercise (10 weeks) training. The body weight and fat mass reduced significantly in the exercise (EX) group compared to the control (CON) group. Blood lipid profiles and low-density lipoprotein were unchanged in the EX group compared to the CON group. However, triglyceride and free fatty acid were significantly lower in the EX group compared to the CON group, and high-density lipoprotein was significantly greater in the EX group compared to the CON group. In addition, fibrinolytic activity and nitrite/nitrate were significantly greater in the EX compared to the CON group. These results suggest that 10 weeks of the moderated intensity aerobic exercise training improves blood lipid profiles, fibrinolytic activity, and the nitrite/nitrate ratio, which may improve vascular health and reduce obesity-related cardiovascular disease risks in high-fat- diet induced rats.

식물 생장조절제가 인삼 (Punax ginseng) 종자의 발아생리에 미치는 영향

Son Eung Ryong,Park Won Mok,C. Pertzsch 韓國作物學會 1979 Korean journal of crop science Vol.24 No.1

본 연구는 식물 생장조절제가 인삼 종자의 발아 생리에 미치는 영향을 구명코져 실시하였으며, 그 결과를 아래와 같이 요약할 수 있었다. 1. 미개갑종자는 전연 발아하지 못하였고, 지베레린, Kinetin 및 IAA를 처리하였어도 발아하지 못하였다. 즉, 미개갑종자가 발아치 못하는 것은 상기 식물생장 조절제와는 관계가 없는 것 같았다. 2. 개갑종자는 파종후 21일이면 60%의 발아율을 보였고, kinetin과 IAA처리구에서도 비슷한 결과를 보였으므로, 위의 두 생장조절제는 발아촉진 효과를 보이지 않았으나, 지베레린 만은 발아를 촉진시켜 처리후 11일에 60%이상 발아 되었다. 3, 지베레린은 수분흡수에 영향을 끼치기 않는 것 같고. 수분흡수 속도와 발아율과는 관계가 없는 것 같음. 종피는 수분흡수률 조장 및 수분 저장 역할을 하였다. 4. 인삼종자에 내포된 당류는 주로 Sucrose이였다. 발아가 진전됨에 따라 배에서는 sucrose와 가용성 탄수화물의 양이 줄어드는 반면, 배유에서는 그들의 함량이 늘어났다. 지베레린 처리종자는 가용성 탄수화물의 생성이 많았다 발아과정 후기에서는 종피에서도 탄수화물의 공급 가능성을 보여 주었다. 5. 방사선 동위원소를 포함한 glucose를 사용한 결과, 지베레린 처리종자는 sucrose 와 불용성 물질의 합성이 속하였다. 6. 지베레린처리 종자는 당류를 아미노산으로의 전환이 속하고, 또한 아미노산을 단백질로 합성능력이 높았다. 7. 즉, 지베레린의 인삼종자 발아촉진 효과에 대한 생리학적 역할은 저장양분의 가수분해 촉진, 가수분해된 물질의 신진대사 촉진, 즉 아미노산 및 단백질 합성을 조장하는 것 같었다 Rcout/St rampelli Bb-Cno는 제분율은 높으나 단백질 함량과 침전가가 각각 9%, 30cc 이하로 낮았다.내냉한계는 4일 미만의 저온이었다. 3. 저온처리기간중에는 모든 품종이 각엽기 모두 초장의 신장이 거의 정체 되었으며 처리종료 후에는 신장을 재개하였으나 각엽기 모두 저온기간이 길수록 신장속도가 감소되었으며, 진흥은 1, 4, 5 엽기, 철원 1 호는 1, 4 엽기, 유신은 1 엽기에 2일간 처리할 경우에만 무처리구와 같은 정도로 회복되었고, 그밖에는 저온기간중 생장이 정체된 차이를 보상하지 못하였다. 4. 파종후 30일간 생장한 묘의 건물중은 저온처리후 엽신이 정상이었고 표생존율도 95% 이상이었던 처리구의 묘에서도 감소가 있었으며 건물중이 무처리구묘의 90% 이하가 되지 않는 저온처리한계기간 (최대가역장해기간)은 제 1, 2, 3, 4, 5 엽기별로 진흥 2, 3, 4, 4, 4 일간, 철원 001 4, 1, 1, 2, 1 일간, 통일 2, 0.5, 0.5, 1, 2 일간, 유신 4, 1, 0.5, 1, 1 일간이었다. 5. 냉해에 의한 엽신변색고사와 초장신장억제는 실용상 중요한 묘고사율 및 묘건물중과의 관계가 뚜렷하지 않았고 품종 및 묘령별 내냉성의 차이를 분화시키지 못하였으나 묘고사율은 뭄종간 내냉성의 차이를 충분히 분화시켰으며 묘건물중은 외견상 냉해치상이 없을 경우에도 감소되고 품종간 차이를 보였으므로 유묘내냉성검정은 고사율과 건물중증가억제율 두 요인을 함께 고려하여야 할 것이다. 6. 저온처리 및 내냉발견 후에 95% 이상의 생존율을 보이는 최장처리기간과 생존묘의 묘대말기 건물중이 무처리구의 9 The undehiscent ginseng seed did not germinate, even if the seeds were treated with GA3, kinetin or IAA. Only GA3 stimulated germination of dehiscent ginseng seed. The physiological roles of gibberellic acid on stimulation of the seed germination were enhancing production of soluble carbohydrate and sucrose. Then gibberellic acid stimulated biosynthesis of insoluble cellural materials and amino acids from sugars and incorporation of amino acids into protein. The fruit coat of ginseng seed did not impede water imbibition, but did function as water absorbor and reservoir.

Prevalence and Intensity of Clonorchis sinensis Metacercariae in Freshwater Fish from Wicheon Stream in Gunwi-gun, Gyeongsangbuk-do, Korea

Woon-Mok Sohn,Byoung-Kuk Na,Shin-Hyeong Cho,Jung-Won Ju,Dong-Chul Son 대한기생충학열대의학회 2018 The Korean Journal of Parasitology Vol.56 No.1