• Plant Biotechnology Reports
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• v.1 no.1
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• pp.19-25
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• 2007

To develop an efficient screening method for detection of the transgene in Chinese cabbage (Brassica rapa spp. pekinensis) utilizing Basta spray, optimal conditions for Basta application were examined in this study. Two transgenic Chinese cabbage lines were obtained through Agrobacterium-mediated transformation and used as transgenic positive controls in the Basta screening experiment. Differential concentrations of glufosinate-ammonium were sprayed into three different growth stages of 12 commercial Chinese cabbage cultivars. The results showed that no plants could survive higher than 0.05% glufosinate-ammonium, and plants at the 2-3 leaf stage were most vulnerable to glufosinate-ammonium. On the other hand, no damage was observed in the transgenic control plants. Reliability of the Basta spray method was proven by showing perfect co-segregation of the tolerance to glufosinate-ammonium and the presence of the bar gene in T₁ segregating populations of the transgenic lines, as revealed by both PCR and Southern blot analyses. Using the developed Basta screening method, we tried to investigate the transgene flow through pollen dispersal, but failed to detect any transgene-containing non-transgenic Chinese cabbages whose parents had been planted adjacent to transgenic Chinese cabbages in field conditions. However, the transgene was successfully detected using Basta spray from the non-transgenic plants bearing the transgene introduced by hand-pollination. Since the Basta spray method developed in this study is easy to apply and economical, it will be a valuable tool for understanding the mechanism of gene flow through pollen transfer and for establishing a biosafety test protocol for genetically modified (GM) Chinese cabbage cultivars.

• Journal of Korean Library and Information Science Society
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• v.44 no.3
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• pp.429-446
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• 2013

As a pioneer study to figure out the compilation of Uepji(town chronicles) of Chunnam region in the Chosun Dynasty, it is analyzed the Uepji of Jangheung. It could help systemize the study of the compilation of Uepji about other town in Chunnam region. Through the examination of exisisting Uepji of Jangheung and actual reviewing of books, characteristics of them were explored systematically. As the result, there were 10 kinds of Uepji which were compiled from the period of King Youngjo to 1910. The system of Uepji was based upon "the new version of Dongkukyeochiseungram" and was added up new items. Characteristics of Uepji of Jangheung are : 1) There were 3 titles of Uepji which were described by focusing on each county(坊), specially 'Inmul(personage)' shows their strong community spirit and enlightening by neo-Confucianism. 2) There were 2 titles of Uepji which were described by focusing on the military, we can understand the importance of military and circumstantial intelligence. 3) There were 4 titles of Uepji which were compiled by government, they reflect the spirit of age. Also the result of comparison with other town chronicles like "Hamju-Chi", "Kimhae-Uepji", it shows Jangheung was the one of major military town.

• Journal of the Korean Regional Science Association
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• v.36 no.3
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• pp.41-52
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• 2020

A new town attracts a large population in the short period due to its excellent residential conditions, and forms a local economy. However, if the new town is constructed in an inferior area, it would cause a negative effect to neighboring areas by absorbing population and firms from them. Nevertheless, the relocation of Chungnam provincial office from Daejeon, a metropolitan area to Naepo belongs to the key project of constructing Naepo. If the officers and their family members move to Naepo following the relocation and form a new consumer group of a local economy, the construction of Naepo would cause a positive effect to its neighboring areas. This paper empirically analyzes the effect of Naepo on the local economy through the change in differences of the new openings of restaurants between areas (defined either by donut-shaped area with 500-meter width or by Eup, Myun, and Dong) inside and those outside of 10km from the border of Naepo. The results from regression equation estimation where difference-in-differences framework is applied imply that the construction of Naepo new town caused a positive economic effect to its neighboring areas.

• Culinary science and hospitality research
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• v.16 no.1
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• pp.165-179
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• 2010

The purpose of this research is to examine the importance of the physical surroundings for the restaurants in the local specialities food town and how their physical surroundings influence on the customer emotional responses and satisfaction to suggest the improvements and implications of the physical surroundings. The questionnaire for a survey was distributed to the customers who have visited the restaurants specialized in Korean beef located in the Sanoei Korean beef town, Jeongeup. The results of this research are as follows. First, except for attractiveness among the factors of physical surroundings(convenience, attractiveness, cleanliness and amusement), as cleanliness and convenience occupy high degree, customers were presented to response more emotionally. Second, except for attractiveness among convenience, attractiveness, cleanliness and amusement, as cleanliness and convenience occupy high degree, customers were presented to be more satisfied. Third, customer emotional response influences on customer satisfaction with the food town for local speciality.

• Proceedings of the Korea Crystallographic Association Conference
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• 2002.11a
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• pp.5-6
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• 2002

The new spectrometer for X-ray Induced Electron Emission Spectroscopy (XIEES) .has been recently developed in KRISS in collaboration with PTI (Russia). The spectrometer allows to perform research using the XAFS, SXAFS, XANES techniques (D.C.Koningsberger and R.Prins, 1988) as well as the number of techniques from XIEES field(L.A.Bakaleinikov et all, 1992). The experiments may be carried out with registration of transmitted through the sample x-rays (to investigate bulk samples) or/and total electron yield (TEY) from the sample surface that gives the high (down to several atomic mono-layers in soft x-ray region) near surface sensitivity. The combination of these methods together give the possibility to obtain a quantitative information on elemental composition, chemical state, atomic structure for powder samples and solids, including non-crystalline materials (the long range order is not required). The optical design of spectrometer is made according to Johannesson true focusing schematics and presented on the Fig.1. Five stepping motors are used to maintain the focusing condition during the photon energy scan (crystal angle, crystal position along rail, sample goniometer rail angle, sample goniometer position along rail and sample goniometer angle relatively of rail). All movements can be done independently and simultaneously that speeds up the setting of photon energy and allows the using of crystals with different Rowland radil. At present six curved crystals with different d-values and one flat synthetic multilayer are installed on revolver-type monochromator. This arrangement allows the wide range of x-rays from 100 eV up to 25 keV to be obtained. Another 4 stepping motors set exit slit width, sample angle, channeltron position and x-ray detector position. The differential pumping allows to unite vacuum chambers of spectrometer and x-ray generator avoiding the absorption of soft x-rays on Be foil of a window and in atmosphere. Another feature of vacuum system is separation of walls of vacuum chamber (which are deformed by the atmospheric pressure) from optical elements of spectrometer. This warrantees that the optical elements are precisely positioned. The detecting system of the spectrometer consists of two proportional counters, one scintillating detector and one channeltron detector. First proportional counter can be used as I/sub 0/-detector in transmission mode or by measuring the fluorescence from exit slit edge. The last installation can be used to measure the reference data (that is necessary in XANES measurements), in this case the reference sample is installed on slit knife edge. The second proportional counter measures the intensity of x-rays transmitted through the sample. The scintillating detector is used in the same way but on the air for the hard x-rays and for alignment purposes. Total electron yield from the sample is measured by channeltron. The spectrometer is fully controlled by special software that gives the high flexibility and reliability in carrying out of the experiments. Fig.2 and fig.3 present the typical XAFS spectra measured with spectrometer.

• Journal of Pharmacopuncture
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• v.25 no.3
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• pp.199-208
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• 2022

Objectives: In recent decades, the trend for treating diabetes mellitus (DM) has shifted toward alternative medicines that are obtained from plant sources. Existing literature suggests that phenolic compounds derived from plants possess promising health-promoting properties. This study aimed to discuss the role of plant-derived phenolic compounds in the effective treatment and management of diabetes. Methods: Information about plant secondary metabolites, phenolic compounds, and their role in the treatment and management of diabetes was collected from different databases, such as Pubmed, ScienceDirect, Scopus, and Google Scholar. Keywords like secondary metabolites, phenolic compounds, simple phenol, flavonoids, lignans, stilbenes, and diabetes were searched. Research and review articles with relevant information were included in the study. Results: Anti-diabetic studies of the four major classes of phenolic compounds were included in this review. The plant-derived phenolic compounds were reported to have potent anti-diabetic activities. However, each class of phenolic compounds was found to behave differently according to various mechanisms. Conclusion: The obtained results suggest that phenolic compounds derived from natural sources display promising anti-diabetic activities. Based on the available information, it can be concluded that phenolic compounds obtained from various natural sources play key roles in the treatment and management of diabetes.

• Transactions on Electrical and Electronic Materials
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• v.4 no.3
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• pp.34-37
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• 2003

[ $HfO_2$ ] and $HfO_xN_y$ films were deposited by plasma-enhanced chemical vapor deposition using $Hf[OC(CH_3)_3]_4$ as the precursor in the absence of $O_2$. The crystallization temperature of the $HfO_xN_y$ films is higher than that of the $HfO_2$ film. Nitrogen incorporation in $HfO_xN_y$ was confirmed by auger electron spectroscopy analysis. After post deposition annealing (PDA) at 800$\Box$, the EOT increased from 1.34 to 1.6 nm in the $HfO_2$ thin films, whereas the increase of EOT was suppressed to less than 0.02 nm in the $HfO_xN_y$. The leakage current density decreased from 0.18 to 0.012 $A/cm^2$ with increasing PDA temperature in the $HfO_2$ films. But the leakage current density of $HfO_xN_y$ does not vary with increasing PDA temperature because an amorphous $HfO_xN_y$ films suppresses the diffusion of oxygen through the gate dielectric.

• Journal of the Economic Geographical Society of Korea
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• v.12 no.1
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• pp.83-95
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• 2009

This paper provides a general overview and critical assessment of Daedeok Science Town (DST) in Korea, mainly through the lens of the related literature. DST symbolizes the government-led creation of a new science town and represents a bold attempt to consolidate national R&D efforts in a designated area with a view to supplying basic scientific knowledge to industries nationwide. It has achieved considerable success by improving the research environment and promoting venture spin-offs and network formation. However, while DST has played a pivotal role in ushering in the era of the knowledge-based economy, new measures are required for it to remain viable. To this end, efforts should be made to direct government support toward new firm establishment, finance, and tighter networking. DST also needs to host large corporations in the area as these could both act as a market for venture businesses and serve as providers of funds.

• The Korean Journal of Ceramics
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• v.6 no.3
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• pp.219-223
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• 2000

The ferroelectric SBT films were deposited on Pt/Ti/SiO$_2$/Si substrates by liquid injection metalorganic chemical vapor deposition (MOCVD) with single-mixture solution of Sr[Ta(OEt)$_5$(dmae)]$_2$and Bi(C$_6$ 6/H$_5$)$_3$. The Sr/Ta and Bi/Ta ratio in SBT films depended on deposition temperature and mol ratio of precursor in the single-mixture solution. At the substrate temperature of 40$0^{\circ}C$, Sr/Ta and Bi/Ta ratio were close to 0.4 and 1 at precursor mol ratio of 0.5~1.0, respectively. As-deposited film was amorphous. However, after annealing at 75$0^{\circ}C$ for 30 min in oxygen atmosphere, the diffraction patterns indicated polycrystalline SBT phase. The remanent polarization (Pr) and coercive field (Ec) of SBT film annealed at 75$0^{\circ}C$ were 4.7$\mu$C/$\textrm{cm}^2$ and 115.7kV/cm at an applied voltage of 5V, respectively. The SBT films annealed at 75$0^{\circ}C$ showed practically no polarization fatigue up to 10$^10$ switching cycles.

• The Proceeding of the Korean Institute of Electromagnetic Engineering and Science
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• v.17 no.1 s.57
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• pp.5-18
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• 2006