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이정일(Jung Il Lee),박장환(Jang Hwan Park),김석동(Sok Dong Kim),안병옥(Byeong Ok Ahn),이승택(Seung Tack Lee) 한국약용작물학회 1993 한국약용작물학회지 Vol.1 No.1
This study was conducted to select thin-shelled and high-yielding lines in job`s-tears. Two breeding lines of Suwon 3 and Suwon 6 were selected from the local collections. These two lines were tested and investigated on their characteristics under the field condition. The heading date of Suwon 3 and Suwon 6 was later one or two days, but the maturity date was one or two days earlier than that of check variety Kim-jejong, respectively. The number of grains per hill of Suwon 3, Suwon 6 was 50%, 49% greater and the milling rate was 3.8%, 5.6% higher than that of check variety, respectively. Althought 1000 grain weight of Suwon 3 and Suwon 6 was 20g lighter and the rate of ripeness was 6%, 12% lower, the raw grain yield was 22%, 20% higher than that of check variety, respectively. The thickness of seed coat of Suwon 3 and Suwon 6 was thiner and the hardness of seed coat was lower than that of check variety, therefore the milling time was decreased 12%, 7% compare to check variety, respectively. The crude protein contents of Suwon 3 and Suwon 6 was slightly higher and the amino acid composition of Suwon 6 was similar to Kimjejong, but Suwon 3 was lower than that of check variety.
Controllable Pretilt Angles for Liquid Crystal Molecules using a Rubbing Treated Mixture Layer
Kim, Dae-Hyun,Park, Hong-Gyu,Kim, Young-Hwan,Kim, Byoung-Yong,Ok, Chul-Ho,Seo, Dae-Shik The Korean Institute of Electrical and Electronic 2009 Transactions on Electrical and Electronic Material Vol.10 No.4
We have investigated the continuous pretilt angle generation for liquid crystals using a rubbing treated mixture layer consisting of homogeneous and homeotropic polyimides. Various pretilt angles in the range from $0^{\circ}$ to $60^{\circ}$ were achieved as a function of the concentration of homeotropic PI. The transmittance characteristics used to measure the pretilt angle showed that the pretilt angles were measured with a high reliability. We observed uniform liquid crystal alignment on the rubbing treated mixture layer.
Detection of Soybean Mosaic Virus Using RT-PCR
Kim, Yul-Ho,Kim, Ok-Sun,Lee, Bong-Choon,Roh, Jae-Hwan,Kim, Myoung-Ki,Im, Dae-Joon,Hur, Il-Bong,Lee, Sang-Chul The Korean Society of Crop Science 1999 Korean journal of crop science Vol.44 No.3
Reverse transcription and polymerase chain reaction (RT-PCR) assay was used to detect SMV strains. A pair of oligonucleotide primers were designed to include the cylindrical inclusion (CI) coding region between 4,176 to 5,560 nt. Amplification from the total RNA extracted from infected plants with SMV yielded a 1,385 bp DNA fragment. RT-PCR was shown to be $10^3$ times more sensitive than the ELISA assay and it could detect a virus in $10^{-6}$ dilution. Restriction enzyme analysis of RT- PCR products using EcoR I showed that SMV isolates were classified into six groups according to the patterns of restriction fragments.
Kim, Jae-Min,Choi, Seung-Hyun,Choi, Sun-Il,Jung, Tae-Dong,Cho, Bong-Yeon,Lee, Jin-Ha,Kang, Seong-Ran,Lee, Gunyoung,Lim, Ho Soo,Yun, Sang Soon,Lee, Ok-Hwan Elsevier 2018 Food chemistry Vol.246 No.-
<P><B>Abstract</B></P> <P>This study investigated a method for validating and determining the measurement uncertainty for the composition of brominated vegetable oil (BVO) in soft drinks and carbonated waters commonly consumed in South Korea. First, we studied a simple and precise qualitative colorimetric method at the maximum residues level 15 ppm. And an analytical method using ion chromatography (IC) was validated and identified with brominated fatty acids by gas chromatography electron ionization mass spectrometry (GC/EI-MS). The measurement uncertainty was evaluated based on the precisional study and confirmed by the preliminary inter-laboratory study. For IC analysis, the recovery range of BVO was from 97.8% to 107.2% with relative standard deviations between 0.18% and 0.69%. In addition, the expanded uncertainty of the BVO was 1.59. These results indicate that the validated method is appropriate for identifying of BVO and can be used to verify the safety of soft drinks or carbonated waters containing BVO residues.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Brominated vegetable oil (BVO) is widely used in citrus-flavored soft drinks. </LI> <LI> The determination of BVO was validated by IC and component was identified GC/EI-MS. </LI> <LI> The recoveries of BVO ranged from 97.8% to 107.2% with RSD between 0.18% and 0.69% </LI> <LI> The analytical uncertainty was evaluated by a precision study for BVO. </LI> <LI> These methods are suitable for the determination of maximum BVO levels. </LI> </UL> </P>
Kim, Kui-Jin,Lee, Ok-Hwan,Han, Chan-Kyu,Kim, Young-Chan,Hong, Hee-Do Molecular Diversity Preservation International (MD 2012 INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES Vol.13 No.2
<P>Obesity is associated with a broad spectrum of cardio-metabolic disturbances, including atherosclerosis and cardiovascular disease (CDV). A high-fat diet has been shown to cause an elevation of the plasma cholesterol levels in humans, and the control of serum cholesterol has been demonstrated to be important in the prevention of CVD and atherosclerosis. The aims of this study were to demonstrate that crude and acidic polysaccharide extracts from <I>Gastrodia</I> rhizomes suppress atherosclerosis through the regulation of serum lipids in Sprague Dawley (SD) rats fed a high-fat diet. We examined the concentrations of serum lipids, including total cholesterol, triglycerides, high-density lipoproteins (HDL) cholesterol, and low-density lipoproteins (LDL) cholesterol, in SD rats fed a high-fat diet and evaluated the atherogenic index. Here, we show that both crude and acidic polysaccharide extracts from <I>Gastrodia</I> rhizomes inhibited the total cholesterol and LDL levels. Moreover, there was a significantly suppressed atherosclerosis risk due to the acidic polysaccharide extract from <I>Gastrodia</I> rhizome. Taken together, our results suggested that acidic polysaccharide extracts from <I>Gastrodia</I> rhizomes might be beneficial for lowering the incidence of CVD and atherosclerosis by reducing the <I>de novo</I> synthesis of total cholesterol and the LDL levels.</P>
Kim, Hyun Ju,Choo, Hungo,Park, Ok-Kyung,You, Nam-Ho,Jeong, Youngjin,Kim, Hwan Chul,Lee, Jae Kwan,Ku, Bon-Cheol Elsevier 2018 Materials letters Vol.211 No.-
<P><B>Abstract</B></P> <P>Carbon nanotubes (CNTs) exhibit outstanding mechanical and electrical properties. However, CNT fibers (CNTFs) have still problems in realizing these properties because of the weak forces between nanotubes with many defects of individual CNTs. Here, we report a solid-state coupling reaction with an iodophenyl motif to investigate molecular covalent bridging in CNTFs. The stepwise thermochemical processes were chemical functionalization followed by thermal treatment of CNT surface to induce solid-state coupling reaction for molecular bridge of CNTFs. These molecular-bridged CNTFs presented phenomenal boost in mechanical tensile strength (0.93 N/tex) which is 132% higher than pristine CNTFs without a decrease in electrical conductivity (870 S/cm).</P> <P><B>Highlights</B></P> <P> <UL> <LI> CNT fibers were covalently bridged by a thermochemical approach. </LI> <LI> Stepwise thermochemical processes induced rapid molecular cross-coupling reaction. </LI> <LI> Mechanical strength and electrical conductivity were remarkably enhanced. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Molecular-bridged CNTFs presented remarkably enhanced mechanical tensile strength and modulus without a decrease in the electrical conductivity compared with the values for pristine CNTFs.</P> <P>[DISPLAY OMISSION]</P>
Anionic Indicators on the Surface of Submicrospheres Consisting of Ionic Palladium(II) Complex
Kim, Cho-Rong,Noh, Tae-Hwan,Yoo, Kyung-Ho,Yoo, Bok-Ryul,Jung, Ok-Sang Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.12
Ionic palladium(II) complex, [($Me_4en)Pd(L)]_2(ClO_4)_4\;(Me_4$en = N,N,N',N'-tetramethylethylenediamine; L = bis-(4-(4-pyridylcarboxyl)phenyl)methane), allows to form a monodisperse submicrosphere without any template or additive. Surface-perchlorates on the submicrosphere have been exchanged by anionic pH indicators such as thymol blue, bromothymol blue, and bromocresol green. The ionic and amphiphilic properties of the palladium(II) complex appear to be primarily associated with the formation and easy surface-anion exchange of submicrosphere. The surface-anion exchange through the electrostatic interaction is a very good tool for the surface-modification. The color of the pH indicator-exchanged submicrospheres is very sensitive to pH and Hg$^{2+}$ cation, and thus they are promising to submicrospherical indicators.