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Hyun-Suk Lee,Gyu-Ho Lee,A-Ra Cho,Gihwan Yi,Kyung-Min Kim 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07
Improving rice high-quality potential is to suffice the food demand of the rapid decreasing consumption, and is a major breeding target recently. We calculated the alkali digestion value (ADV), used to indirectly measure gelatinization temperature, to evaluate the quality of cooked rice in 2013 and 2014. The ADV score of frequency distribution was higher milled rice than brown rice. In total, nine different quantitative trait loci (QTLs) were found on chromosomes1, 3, 5, 6 and 8 in 2013 and 2014. Also, chromosome 5, 8 were detected over two years. The polymorphism using RM223, RM3530, and RM18130 markers can be used to select lines that have a good trait for breeding of high-quality rice. We conclude that selected molecular markers from this QTL analysis could be exploited in future rice quality.
Cho, Jin-Gyeong,Song, Na-Young,Nam, Tae-Gyu,Shrestha, Sabina,Park, Hee-Jung,Lyu, Ha-Na,Kim, Dae-Ok,Lee, Gihwan,Woo, Young-Min,Jeong, Tae-Sook,Baek, Nam-In American Chemical Society 2013 Journal of agricultural and food chemistry Vol.61 No.43
<P>The transgenic rice cultivar of Oryza sativa spp. <I>japonica</I> cv. Hwa-Young, C1/R-S transgenic rice (C1/R-S rice), is a flavonoid-rich cultivar of rice. The grains of C1/R-S rice were extracted with aqueous MeOH, and the concentrated extract was partitioned with EtOAc, <I>n</I>-BuOH, and H<SUB>2</SUB>O, successively. Repeated silica gel, octadecyl silica gel (ODS), and Sephadex LH-20 column chromatographies for the EtOAc and <I>n</I>-BuOH fractions afforded four new flavonoids (compounds <B>2</B>, <B>3</B>, <B>7</B>, and <B>8</B>) along with four known flavonoids: (+)-3′-<I>O</I>-methyltaxifolin (<B>1</B>), brassicin (<B>4</B>), isorhamnetin-4′-<I>O</I>-β-<SMALL>d</SMALL>-glucosyranoside (<B>5</B>), and 3′-<I>O</I>-methyltaxifolin-5-<I>O</I>-β-<SMALL>d</SMALL>-glucopyranoside (<B>6</B>). The new flavonoids were identified as 3′-<I>O</I>-methyltaxifolin-7-<I>O</I>-β-<SMALL>d</SMALL>-glucopyranoside (<B>2</B>), 3′-<I>O</I>-methyltaxifolin-4′-<I>O</I>-β-<SMALL>d</SMALL>-glucopyranoside (<B>3</B>), isorhamnetin-7-<I>O</I>-β-<SMALL>d</SMALL>-cellobioside (brassicin-4″-<I>O</I>-β-<SMALL>d</SMALL>-glucopyranoside) (<B>7</B>), and brassicin-4′-<I>O</I>-β-<SMALL>d</SMALL>-glucosyranoside (<B>8</B>) from the result of spectroscopic data including nuclear magnetic resonance spectrometry (NMR), mass spectrometry (MS), and infrared spectroscopy (IR). Also, quantitative analysis of major flavonoids (compounds <B>2</B>, <B>3</B>, and <B>8</B>) in C1/R-S rice, <I>O. sativa</I> spp. <I>japonica</I> cv. Hwa-Young (HY), and a hybrid of two cultivar (C1/R-S rice/HY) extracts was performed using HPLC experiment. The isolated flavonoids were evaluated for their radical-scavenging effect on DPPH and ABTS radicals.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jafcau/2013/jafcau.2013.61.issue-43/jf403072c/production/images/medium/jf-2013-03072c_0003.gif'></P>
Byeon Gihwan,Park Jee Eun,Hong Jin Pyo,Cho Maeng Je,Park Jong-Ik 대한신경정신의학회 2023 PSYCHIATRY INVESTIGATION Vol.20 No.4
Objective This study aimed to examine how marital status, occupational status, and individual personality influence suicidal ideation and suicide attempts among Korean middle-aged adults, and explore the effects of their interaction.Methods A total of 2,464 middle-aged adults were surveyed about suicidality in the past year (1-year suicidality). Participants’ current marital and occupational status, including other demographic and clinical variables were investigated. Personality traits were assessed using the Big Five Inventory. The dependent variable was the presence of 1-year suicidality. Independent variables were current marital and occupational status. Generalized linear model (GLM) analysis was performed to adjust for other covariates.Results The group with 1-year suicidality had significantly lower income. It had a lower proportion of full-time employment, and higher percentages of part-time employment and unemployment. The GLM analysis results showed that marital and occupational status had no significant association with 1-year suicidality. Neuroticism and openness were positively associated with 1-year suicidality, whereas conscientiousness and extraversion had a negative association. Interactions between marital status and neuroticism, conscientiousness, and occupational status were significant.Conclusion Individualized social and psychological interventions for suicide prevention are required according to individual personality traits.
Gideon Rajan,Gihwan Cho 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.4
Recently, one of the growing hot topics in the field of wireless network is to enable of Delay/Disruption Tolerant Networking (DTN). It aims to solve the long delay paths and unpredictable link disruptions that occur in the challenged networks. In order to maintain a safe and secure DTN model, a secure way of key distribution would be required to provide robustness from all the attacks it suffers. This paper proposes a clear and illustrative security architecture for DTN with secure key management framework to distribute the cryptographic keys to the constituted nodes in a secure way. The performance of how the cryptographic keys work and perform during a node is departed away from the network are discussed. The distributed keys use the public key cryptography to mitigate during the network attacks. Along with the key management protocol, some degree of security features can be achieved with the bundle of security protocol to rescue the network model from any attacks.