이규보의 영물시 (詠物詩) 연구

박성규 ( Sung Kyu Park ) 진단학회 1997 진단학보 Vol.- No.83

이규보 연보 연구 (2)

박성규 ( Sung Kyu Park ) 한국한문교육학회 2005 한문교육논집 Vol.24 No.-

성인여성의 중강도 유산소운동 중 음악템포가 감정적 반응 및 신경전달물질에 미치는 영향

박상규(Park, Sang?Kyu) 한국웰니스학회 2018 한국웰니스학회지 Vol.13 No.4

이 연구는 비활동 여성 10명을 대상으로 중강도 유산소운동 중 음악템포가 감정적반응 및 신경전달물질에 미치는 영향을 규명하고자 실시하였다. 중강도 유산소운동은 트레드밀 운동을 실시하였으며, 운동강도는 %VO2R(여유산소섭취량)법을 사용하였고, 50%VO2R 운동강도로 설정하였다. 실험은 음악을 적용하지 않은 유산소운동 실험(AE), 낮은 음악템포 적용 유산소운동 실험(AESTM) 빠른 음악템포 적용 유산소운동 실험(AEFTM)으로 총 3번의 실험에 참여하였다. 통계분석 결과 운동 후 감정적반응(즐거움)에서 실험 간 유의한 차이가나 나타나(p<.001), 사후검증을 실시한 결과 음악을 적용하지 않은 유산소운동 실험(AE), 낮은 음악템포 적용 유산소운동 실험(AESTM)보다 빠른 음악템포 적용 유산소운동 실험(AEFTM)에서 운동에 대한 즐거움이 높은 것으로 나타났다. dopamine의 경우 유의한 상호작용 효과(p<.01)가 나타났는데, 이는 빠른 음악템포 적용 유산소운동 실험(AEFTM)에서만 안정 시 보다 운동 후에 유의하게 증가한 것으로 나타났다(p<.01). 또한 운동 후 혈액채취 시점에서 음악을 적용하지 않은 유산소운동 실험(AE), 낮은 음악템포 적용 유산소운동 실험(AESTM)보다 빠른 음악템포 적용 유산소운동 실험(AEFTM)에서 유의하게 높은 것으로 나타났다. The purpose of this study was to investigate the influence of music tempo on emotional responses and neurotransmitters during Moderate aerobic exercise. Exercise intensity was determined by %VO2R method and by 50% VO2R exercise intensity. Experiments were performed in three experiments with AE(aerobic exercise without music), AESTM(aerobic exercise with slow tempo music), and AEFTM(aerobic exercise with fast tempo music). Statistical analysis showed that there was a significant difference in emotional reaction (enjoyment) after exercise between the experimental groups (p <.001). As a result, AEFTM showed a higher level of enjoyment in than AE and AESTM. As a result of performing post hoc test as a significant interaction was represented in dopamine (p<.01), AEFTM significantly increased after exercise (p <.01). In addition, AEFTM showed significantly higher dopamine expression than AE and AESTM at post-exercise.

Effects of Pilger Rolling and Heat Treatment on Microstructure and Corrosion Resistance of Ag-electroplated 304 Stainless Steel Tubes

Hyun Park,Woo‑Jin Lee,Jae‑Han Son,Han‑Kyun Shin,Sung‑Kyu Hong,Hyo‑Jong Lee 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.8

We introduce a cost-effective method that combines electroplating with metal cold working processes to manufacture compositetubes with robust corrosion resistance. First, a 3-step electroplating process was developed to form an adhesive anduniform Ag coating on the outer wall of a 304 stainless steel tube. The process consisted of a Ni-strike step for removing thepassivation layer of the initial 304 tube, Cu deposition for smoothing the surface by adding a buffer layer, and Ag deposition. To reinforce the interfacial adhesion between the electroplated layers and the 304 tube and increase the area of the Ag coating,a pilger rolling or pilger rolling + heat-treatment process was performed after the Ag electroplating process. Scanningelectron microscopy of the composite tubes after each process indicated that the as-deposited Ag coating changed fromhaving a rough to smooth surface after only pilger rolling and with additional heat treatment. Electron backscatter diffractionanalysis of the microstructures and textures of the tubes revealed that dynamic recrystallization occurred extensively duringpilger rolling, resulting in the formation of a relatively defect-free grain structure without heat treatment. Furthermore,electrochemical polarization curves determined that the Ag-coated composite tubes are superior to the uncoated 304 tubein terms of corrosion resistance under Cl−atmosphere, owing to the formation of a AgCl passivation layer during testing. Surface analysis of the composite tubes suggests that the properties of the AgCl passivation layer are related to the grainsize of the Ag coating and the density of plastic-deformation-induced defects.

이규보 연보연구

박성규 ( Sung Kyu Park ) 한국한문학회 2004 韓國漢文學硏究 Vol.0 No.34

Clothing Pressure of selected Support Panty Stockings

(Jeong Eun Park),(Su Kwang Sung),(Min Kyu Song) 한국의류산업학회 2000 한국의류산업학회지 Vol.2 No.5

The purpose of the study was to obtain the basic data on the self-adjusting ability of the support panty stockings. Ten healthy women in the twenties were selected as subjects and clothing pressure of 9 support panty stockings made of single covered yarn (SCY) and double covered yarn (DCY) were measured under the standard environmental condition for the study. Data was analysed statistically according to body postures, sides, and parks. The results were as follows: Clothing pressure according to body posture was order of `sitting-on-a-chair`, `stepping-up-a-stair`, and `standing`. High clothing pressure was obtained in the parts of calf (9.4 gf/㎠) in `standing` and knee (9.7 and 16.5 gf/㎠) in both `stepping-up-a-stair` and `sitting-on-a-chair`, respectively. The order of clothing pressure with body sides was `front`, `side`, and `back`. The highest clothing pressure was knee (18.8 gf/㎠) on the front, thigh (8.8 gf/㎠) on the side, and calf (6.4 gf/㎠) on the back. Clothing pressure of DCY at abdomen and knee was a little higher than those of SCY 3. In terms of material structure variation, clothing pressure of thigh, calf and ankle with SCY was a little higher than those with DCY, while clothing pressure of abdomen and knee with DCY was a little higher than those with SCY.

Seasonal and diel abundance and feeding patterns of Chaoborus flavicans in Sang-Chun reservoir

Jeong, Ga-Ram,Park, Sang-Kyu The Korean Society for Integrative Biology 2010 Animal cells and systems Vol.14 No.4

To document the basic ecological aspects of Chaoborus species, which has never been reported in Korea, we attempted to identify the species, to monitor seasonal and vertical dynamics, and to elucidate trophic relations of the species in Sang-Chun reservoir. Using morphological characteristics, we identified the collected samples as C. flavicans. Also, we compared the distribution of C. flavicans, Daphnia rosea and chlorophyll a to observed seasonal dynamics. The increase of C. flavicans was observed 1-2 weeks after the increase of D. rosea. Survey of diel vertica migration patterns in the summer season showed that C. flavicans were in hypolimnion at daytime, but moved to the epilimnion at night. Finally, to determine trophic relationships in Sang-Chun reservoir, additional studies on the food web were undertaken by stable isotope analysis. Chaoborus flavicans I-II instars appear to be filter feeders based on carbon isotope values. Trophic levels of C. flavicans III-IV instars were shown to be higher than other zooplankto based on nitrogen isotope values.

지역냉방 시스템용 초고효율 판형 열교환기 개발에 관한 연구

박재홍(Jae-Hong Park),임혁(Hyug-Lim),조성열(Sung-Youl Cho),강인성(In-Sung Kang),김정규(Jung-Kyu Kim),허인은(In-Eun Hur),고성규(Seong-Kyu Ko),곽승식(Sung-Sik Kwak),김종재(Jong-Jae Kim) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10

Plate heat exchanger consists of thin, rectangular, pressed sheet metal plates that are sandwiched between full peripheral gaskets and clamped together in a frame. The frame has a fixed end-cover plate, fitted with the connecting ports, which is bolted together with a movable cover plate to hold the embossed plates in between; the top and bottom carrying bars allow proper alignment of the plate stacks. When compared with the well-established shell and tube heat exchangers, the plate heat exchanger shows a lot of advantages like high NTU values, compactness, low cost, multi duties and reduced fouling etc. Plate heat exchangers are often used to transfer heating or cooling water which is produced in the energy production( district heating or district cooling) facilities to residential areas and industrial parks. The district cooling systems of Middle East are the biggest market of plate heat exchanger, but the technical specifications for cooling system are different from the domestic one. To achieve its specifications, the new plate heat exchanger was developed, and its thermal performance results are introduced in this paper.

Nanogenerators: Fully Rollable Transparent Nanogenerators Based on Graphene Electrodes (Adv. Mater. 19/2010)

Choi, Dukhyun,Choi, Min-Yeol,Choi, Won Mook,Shin, Hyeon-Jin,Park, Hyun-Kyu,Seo, Ju-Seok,Park, Jongbong,Yoon, Seon-Mi,Chae, Seung Jin,Lee, Young Hee,Kim, Sang-Woo,Choi, Jae-Young,Lee, Sang Yoon,Kim, Jo WILEY-VCH Verlag 2010 ADVANCED MATERIALS Vol.22 No.19

<B>Graphic Abstract</B> <P>The cover shows an image of fully rollable transparent nanogenerators synthesized using chemical vapor deposition grown large-scale graphene sheets as transparent electrodes and piezoelectric ZnO nanorod arrays. Sang-Woo Kim, Jae-Young Choi, and co-workers report on p. 2187 the electrical and structural stability of the nanogenerators, with excellent charge scavenging performance under external mechanical loads such as bending and rolling. This study shows that graphene-based nanogenerators are very promising for self-powered rollable transparent device applications. <img src='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content.gif' alt='wiley_img_2010/09359648-2010-22-19-ADMA201090066-content'> </P>

Physical and chemical Effects on the sonication Treatment of chitosan solution

Lee, Keun Tai,Park, Seong Min,Park, Chan Kyu,Kim, Sang Moo 한국키틴키토산학회 1997 한국키틴키토산학회지 Vol.2 No.2

물리적 방법을 이용한 키토산 올리고당의 제조에 관한 기초 자료를 제시하기 위하여 키토산용액을 20kHz의 초음파로 처리하였으며, 초음파 처리 효과에 미치는 처리 조건의 영향을 조사하였다. 키토산 용액의 고유점도는 초음파 처리 5분까지는 급속하게 감소하였고 그 이후로는 서서히 감소하였다. 키토산 용액의 부피가 작을수록 초음파 처리효과는 컸으며, 키토산 용액의 온도는 초음파 처리에 별다른 효과가 없는 것으로 나타났다. 5분간 초음파 처리 후의 점도는 용매의 종류에 따라 큰 차이가 없었으나, acetate buffer의 경우 초음파 처리효과가 가장 컸다. pH가 높을수록 초음파 처리효과는 크게 나타났으며, 이온강도와 염의 종류에 따른 효과는 나타나지 않았다. 이상의 결과에서, 용액의 부피는 10~20ml, 온도는 20~30℃, 용액의 pH는 4.5, 그리고 용매의 종류는 acetate buffer로 하는 것이 최적 초음파 처리조건으로 추정된다. As the first step of studies related to production of chitooligosaccharides by physical methods, chitosan solution were sonicated with 20kHz and various treatment effects were examined to present fundamental data of sonicated chitosan solution. Intrinsic viscosity of chitosan solution sharply decreased from 3.76dl/g to 2.90dl/g until 5 minutes of sonication and then slowly decreased. With low volume of chitosan solution, sonication was very effective and temperature of chitosan solution slightly affected the efficiency of sonication. In case of changing the solvent, no significant differences were observed on the effect of sonication, however, acetate buffer had highest sonication effect among various solvents. The sonication effect was increased as the increasement of the value of pH, on the contrary, ionic strength and type of counterions showed no effect on sonication, With these results, we assumed that optimal sonication treatment would be as follows, solution volume was 10 ~20ml, temperature range was 20~30℃ , pH value of solution was 4.5 and type of solvent was acetate buffer