모악산 도립공원 이용실태 분석에 관한 연구

김세천,허준,박봉주,Kim, Sei-Chon,Huh, Joon,Park, Bong-Ju 한국조경학회 1995 韓國造景學會誌 Vol.23 No.3

The purpose of this study is to suggest objective basic data for park management proposal through the quantitative analysis of users' behaviors and satisfaction for the actual conditions of management in Moaksan provincial park. For this, users' behaviors and socio-ecnomic characteristics have been analyzed. Specifically, it attempts to investigate users' anticipation and degree of satisfaction applied Expectancy Theory by Likert scale. And users' satisfaction for the actual conditions of management had been analyzed by using the multiple regression. Results of this study can be summarized as follows ; From the aspect of utilization reality, the male usage was silighty higher than female usage, and the usage rate reality, the male usage was slighty higher than female usage, and the usage rate among the young and students such as university students also appeared slightly higher than the norm. Due to the fact, subject park had been provincial park, bus usage was predominant, and users' visit park 1 or 2 times a year. Generally, the value of users' post occupancy evaluation were higher than those of anticipated, and Use in night and facilities were lower. A sense of the season, dense of forest, beauty of skyline and a perspective view appeared as main explicatory variables having positive effects on the satisfaction level for the landscape. Amount of plant and shade were positive variables on the satisfaction and users' had dissatisfaction with trial damage. According to the multiple regression analysis, the major variables to the satisfaction for the actual condition of vegetation management were diversity, recovery of artificial injury.

반응표면분석을 통한 SU-8 포토레지스트의 특성 및 최적화

李晟準,文世泳,朴宰賢,洪尙眞 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

SU-8 is a epoxy based photoresist designed for MEMS applications, where a thick, chemically and thermally stable image is desired. But SU-8 has proven to be very sensitive to variation in processing variables and hence difficult to use in the fabrication of useful structures. In this paper, negative SU-8 photoresist processed has been characterized in terms of delamination. Based on a full factorial designed experiment. Employing the design of experiment (DOE), a process parameter is established, and analyzing of full factorial design is generated to investigate degree of delamination associated with three process parameters: PEB (Post Exposure Bake) temperature, PEB time, and exposure energy. These results identify acceptable ranges of the three process variables to avoid delamination of SU-8 film, which in turn might lead to potential defects in MEMS device fabrication.

작물 수량과 쏘스-씽크 관계

성락춘,최규훈,박세준 高麗大學校 自然資源科學硏究所 1996 自然資源科學硏究 Vol.4 No.-

Analysis of Chlorophyll Fluorescence in Transgenic Soybean under Drought and Salt stress

Sei Joon Park,Ji Young Kim,Hyun Hee Kim,Sung Yung Yoo,So Hyun Park,Sun Hee Hong,Tae Seok Ko,Tae Wan Kim 한국육종학회 2012 한국육종학회 심포지엄 Vol.2012 No.07

Development of transgenic plant with desirable traits to cultivated plant is one of the important procedures in plant molecular breeding. However, applicable assessment of transgenic plant in laboratorial scale is not much except cultivating transgenic plant for a whole life in field condition. Here, we analyzed chlorophyll fluorescence in three transgenic soybean lines with AtMYB44 transcription factor for assessment of photosynthetic activity under abiotic stresses such as drought. Soybean varieties used in this study were ‘Bert’ and ‘Bert’ derived three transgenic soybeans, ‘AtMYB44 CM35101’, ‘AtMYB44 CM2471’, and ‘AtMYB44 CM4481’. Analyzed five different chlorophyll fluorescence variables are maximum PSII quantum yield (QY_max), steady state PSII quantum yield (QY_Lss), steady state non-photochemical quenching (NPQ_Lss), coefficient of photochemical quenching in steady-state (Qp_Lss), and fluorescence declineratio in steady-state (Rfd_Lss). To determine main chlorophyll fluorescence variable affected by abiotic stress, principal component analysis (PCA) was conducted with five chlorophyll fluorescence variables measured from four varieties. QY_Lss and NPQ_Lss were main chlorophyll fluorescence variables to evaluate abiotic stress, particularly in drought stress. In comparison with transgenic soybean lines based on chlorophyll fluorescence variables, ‘AtMYB44 CM2471’ and ‘AtMYB44 CM4481’ are more tolerant to drought than the others. Interestingly, three transgenic soybean lines which have a same AtMYB44 gene with different regions of chromosome revealed the quite different responses of chlorophyll fluorescence to drought treatment.

Application of Non-photochemical Quenching on Screening of Osmotic Tolerance in Soybean Plants

Sei Joon Park(박세준),Hyun Hee Kim(김현희),Tae Seok Ko(고태석),Myong Yong Shim(심명룡),Sung Yung Yoo(유성녕),So Hyun Park(박소현),Tae Gyeong Kim(김태경),Ki Cheol Eom(엄기철),Sun Hee Hong(홍선희),Tae Wan Kim(김태완) 한국토양비료학회 2010 한국토양비료학회지 Vol.43 No.3

한발과 염 스트레스에 대한 콩의 저항성 검정에 있어서 Non-photochemical quenching (NPQ)을 적용하기 위하여, 저항성 콩 (신팔달콩 2호)와 대조구 콩 (태광콩)을 이용하여 제한적 관수 (50 m/pot/day) 와 염 (200 mmol NaCl) 처리를 한 후, 엽록소 형광반응의 변수, maximum efficiencies of photosystem II photochemistry (Fv/Fm), efficiencies of photosystem II photochemistry (ΦPSII), NPQ와 CO₂ 동화율 (PN) 을 측정하였다. 콩 두 품종의 엽 수분포텐셜은 한발처리에서 -0.2 MPa에서 -0.8 MPa로, 염처리에서는 -0.7 MPa에서 -1.7 MPa로 감소하였다. 염처리에서 엽 수분함량의 감소는 신팔달콩 2호에서 적었다. 두 품종 모두 엽의 수분포텐셜이 감소함에 따라 Fv/Fm 은 변화가 없었으며, ΦPSII 와 PN 는 감소하였다. NPQ의 경우, 신팔달콩 2호은 한발과 염처리에 모두에서 반응이 나타난 반면, 태광콩에서는 한발처리에서만 나타났다. 두 품종의 모든 처리에서 ΦPSII 와 PN간에 정의 상관 관계를 보였으나, PN 의 감소에 대한 ΦPSII 의 감소 정도가 신팔달콩 2호에서 적었다. 또한 삼투처리에 따른 ΦPSII 의 감소와 NPQ의 증가는 신팔달콩 2호에서만 나타나 ΦPSII 와 NPQ 간의 부의 관계가 유지된 반면, 태광콩에서는 염처리에서 이들간의 연관성이 없었다. 따라서 본 연구는 삼투 저항성의 검정에 있어서 엽록소 형광반응의 단일변수(Fv/Fm, ΦPSII, 및 NPQ)의 이용보다 ΦPSII 와 NPQ 의 상호관계 분석이 더 유효한 것을 제시하였다. Non-photochemical quenching (NPQ) values for utilizing them to detect osmotic tolerance in plants were examined with two different soybean cultivars, an osmotic tolerant soybean (Shinpaldalkong 2) and a control soybean (Taekwangkong). Two different stresses were applied to the cultivars as the restricted irrigations of 200 and 50 ml water pot<SUP>-1</SUP> d<SUP>-1</SUP> for 5 days for a control and a drought stress, respectively, and a sodium chloride solution of 200 mmol for 6 days for a salt stress. The intact leaves of the two cultivars after treatment were used to measure chlorophyll fluorescence parameters, maximum efficiencies of photosystem II photochemistry (Fv/Fm), efficiencies of photosystem II photochemistry (ΦPSII), CO₂ assimilation rate (PN), and NPQ. Leaf water potentials of the two cultivars decreased from ? 0.2 to ? 0.8MPa by a drought treatment and from ? 0.7 to ? 1.7MPa by a salt treatment. Leaf water content of Shinpaldalkong 2 after a salt treatment was less decreased than that of Taekwangkong. Fv/Fm values of both cultivars were not changed, while ΦPSII and PN were decreased proportionally to leaf water potential decrease. The response of NPQ was occurred in Shinpaldalkong 2 under the drought and salt stresses. With Taekwangkong cultivar, only drought stress referred NPQ response. The cultivar differences on chlorophyll fluorescence parameters were found in the relationships between ΦPSII and PN, and between NPQ and ΦPSII. Although the positive relationships between ΦPSII and PN were established on all treatments of both cultivars, the decreasing rate of ΦPSII to PN was smaller in Shinpaldalkong 2 than Taekwangkong. The NPQ was increased according to the decrease of ΦPSII by osmotic treatments in Shinpaldalkong 2. The complementary relationships between NPQ and ΦPSII were well maintained at all treatments in Shinpaldalkong 2, while these relationships were lost at a salt treatment in Taekwangkong. Taken together, the results suggest that analysis of complementary relationships between ΦPSII and NPQ could be more valuable and applicable for determining osmotic tolerance than single analysis of each parameter such as Fv/Fm, ΦPSII and NPQ.

Nitrogen Balance and Biological Nitrogen Fixation of Soybean in Soybean-Barley Cropping System

Park Sei Joon,Kim Wook Han,Lee Jae Eun,Kwon Young Up,Shin Jin Chul,Ryu Yong Hwan,Seong Rak Chun The Korean Society of Crop Science 2005 Korean journal of crop science Vol.50 No.1

This experiment was conducted to investigate the soil nitrogen credit of biological nitrogen fixation (BNF) and the nitrogen balance of soybean in soybean-barley cropping systems. Soybean cultivar, Shinpaldalkong2 and barley cultivar, Olbori, were used in soybean mono-cropping (SM), barley monocropping (BM), and barley­soybean double cropping system. The barley-soybean double cropping system was treated with two different levels of nitrogen fertilizers, 0 nitrogen fertilizer (BS-F0), and standard nitrogen fertilizer (BS-F1). Nitrogen and organic matter concentrations in soil of BS-F1 plot on October, 2001 were increased $4.8\%\;and\;5.9\%$, respectively, compared with those on October, 2000. The ranges of BNF rate in soybean were $69.1\~ 88.2\%$ in two years, and the rate was the highest in BS-F0 plot and the lowest in SM plot. The ranges of nitrogen harvest index (NHI) in all treatments were $83.9\~86.7\%$. The yield was 270 kg/10a in BS­F1 plot and 215 kg/10a in BS-F0 plot. However, the nitrogen balances were +0.6 kg/10a of gain of soil nitrogen in BS-F0 plot and -0.4 kg/10a of loss of soil nitrogen in BS-F1 plot. In comparisons of SM and BS-F1 plots, although the seed yields were similar in two plots, the loss of soil nitrogen was higher in SM than BS-F1 plot. Overall, our results suggest that barley-soybean double cropping system was more effective in respect to seed productivity and soil nitrogen conservation than soybean monocropping system, and the N credit to following crops by soybean cultivation was identified in soybean double cropping system.

Growth and Maturity in Response to Planting Times in Supernodulating Soybean Mutants

Park Sei Joon,Youn Jong Tag,Lee Jae Eun,Kim Wook Han,Kwon Young Up,Shin Jin Chul,Seong Rak Chun The Korean Society of Crop Science 2005 Korean journal of crop science Vol.50 No.1

This experiment was conducted to investigate the changes of growth and maturity and to clarify the function of supernodulating characters, excessive nodules and high biological nitrogen fixation rate (BNF), on maturity in response to different planting time in supernodulating soybean mutants. Two supernodulating soybean mutants, Sakukei4 and SS2-2, and their parent cultivars, Enrei and Shinpaldalkong2, were planted on May 24 and June 15, 2004. The degrees of the shortening of growth days by the planting time delay were 18 to 22 days in four cultivar, and there were no significant differences among the cultivars. However, four cultivars showed the different maturity properties. Sakukei4, mutated from Enrei, showed later maturity than that of Enrei, and 882-2, mutated from Shinpaldalkong2, showed earlier maturity than that of Shinpaldalkong2. The plant and nodule dry weights at R6 stage of Sakukei4 showed the smallest decrement and those of SS2-2 was showed the largest decrement by the delay of planting time. The photosynthetic rates of Sakukei4 during the late reproductive growth period were slowly decreased, however those of SS2-2 were steeply decreased in two planting time treatments. Overall, the growth of Sakukei4 was decreased slowly, however the growth of SS2-2 was decreased sharply according to the delay of planting time. The percentage of seed yield of Sakukei4 in June planting plot compared with May planting plot at R8 stage was $92\%$, which was the lowest decreasing rate of yield among the cultivars, and in the case of SS2-2, it was in $76\%$, the highest one. These results indicated that the responses of supernodulating mutants by the delay of planting time were very similar to the wild types. This means supernodulating characters in supernodulating soybean mutants might not affect to the maturity property. Additionally, the maturity property could be considered as an important characteristics to decide or to select on the developments of supernodulating soybean mutants, which have a low productivity by an excessive nodules, especially.

Chlorophyll Fluorescence Kinetics of young soybean plants during cold stress

Sei Joon Park,Seung-Gil Yun,Sang-Eun Lee,Jung-Ah Jung,S. N. Ryu,Tae-Wan Kim 한국토양비료학회 2005 한국토양비료학회 학술발표회 초록집 Vol.2005 No.9

Modulation of the effective density and refractive index of carbon nanotube forests via nanoimprint lithography

Park, Sei Jin,Ok, Jong G.,Park, Hui Joon,Lee, Kyu-Tae,Lee, Jae Hyuk,Kim, Jeong Dae,Cho, Eikhyun,Baac, Hyoung Won,Kang, Shinill,Guo, L. Jay,Hart, A. John Elsevier 2018 Carbon Vol.129 No.-

<P><B>Abstract</B></P> <P>The unique properties of carbon nanotubes (CNTs) allow them to be used in various optical applications, such as ultra-dark surfaces, bolometers, metamaterial cloaks, and anisotropic absorbers. In particular, organization of CNTs with controlled density at the sub-micrometer scale could enable new strategies to engineer optically active surfaces. Here, we present a new strategy to engineer the density-dependent optical properties of CNT forests by patterning of catalyst film via nanoimprint lithography (NIL) followed by atmospheric pressure chemical vapor deposition (CVD) synthesis of CNTs. Via this approach, we demonstrate atmospheric pressure growth of CNT structures with widths of 80–350 nm. These structures form self-supporting arrays with height exceeding 500 μm, representing aspect ratios well over 1000:1. Optical attenuation measurement places the density of NIL patterned forests to be a fraction of the density of unpatterned CNT forests, confirming that the CNT density is effectively controlled by the catalyst coverage. The infrared absorbance measurements corroborate the density control, and Kramers-Kronig analysis shows that the refractive indices of the NIL patterned CNT forests are tunable in the range of 1–1.8.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Influences of Different Planting Times on Harvest Index and Yield Determination Factors in Soybean

Park, Sei-Joon,Kim, Wook-Han,Seong, Rak-Chun The Korean Society of Crop Science 2000 Korean journal of crop science Vol.45 No.2

This experiment was conducted to investigate the changes of harvest index and the relationship between harvest index and yield determination factors by different planting times in the determinate soybean cultivars, Shinpaldal and Danbaeg. Optimum planting were 23 May in 1995 and 1996. Late planting were 13 June in 1995 and 6 June in 1996. Growth period from planting to physiological maturity (R7) was shortened as planting time was delayed in two cultivars due to shortening of reproductive growth period in Shinpaldal, and of vegetative growth period in Danbaeg. Stem weight was distinctly decreased in late planting compared to optimum planting, but seed weight of both cultivars was not different between planting times. Also, seed number per pod and harvest index were significantly increased in late planting and the high correlation was found between two factors. It was suggested that increase of harvest index in late planting would be related with high assimilate use efficiency due to increase of sink capacity. The results of correlation and principal component analysis for yield determination factors showed that main factor on yield determination was pod number per plant at R5 stage associated with dry matter accumulation during early reproductive growth period, seed number per pod and harvest index were the second factor, and one hundred seed weight was the third factor. The result of this experiment indicated that yield determination in soy-bean was dependent mainly on pod number per plant related to dry matter accumulation by early reproductive growth period, and the increase of seed number per pod and harvest index could compensate for yield decrease by shortening of vegetative growth period in late planting. Such result suggests that optimum planting date can be delayed from mid May to early June in improved soybean cultivars in Korea.