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김혜정 ( Kim¸ Hyejeong ) 한국어교육학회 2021 국어교육 Vol.- No.174
This study aims to examine how current educational content should be transformed to enable readers to demonstrate their capabilities as practical knowledge. To this end, we examined our reading education in contrast to the Common Core State Standards (CCSS) in the United States. The results showed that reading curriculum is biased toward the reading function, and it is necessary to revise the educational content that was seemingly selected without evidence and focus on key functions. Furthermore, when selecting functions, it is necessary to enhance the system and affiliation between categories, as well as to increase the specificity, practicality and consistency of functional statements, by presenting them as principles of iterative deepening when arranging them. Accordingly, we proposed a content system table centered on “function” and “genre, text, attitude, and context” as categories of different layers. And decoding, reading fluency, changes of high school ‘reading’ subjects are required to enhance practicality of reading education, This is expected to increase the practicality of reading education as practical knowledge.
Kim Gwan-Young,Kim Jin-Ho,Lee Taeho,Bae Byoung-Chan,Baik Hyejeong,김태헌,Kim Junsik,Kang Dong Wook,Kim Ju Hee,Kim Dahan,Cho Hea-Young,김대덕 한국약제학회 2022 Journal of Pharmaceutical Investigation Vol.52 No.1
Purpose The aim of this work was to evaluate a new polylactic acid microsphere depot formulation (Leuprolide Depot 3 M) prepared by a water-in-oil-in-water emulsion/solvent evaporation method. Methods The physical properties of the microspheres, including particle size and drug encapsulation efficiency, were characterized. The accelerated and long-term in vitro release profiles were examined. Pharmacokinetic and pharmacodynamic studies were conducted in male beagle dogs after a single subcutaneous injection of the microspheres at 11.25 mg/animal leuprolide acetate by measuring the plasma leuprolide and testosterone levels, respectively. Results Leuprolide Depot 3 M was spherical in shape with a smooth surface and showed an average diameter of 17.83 μm and a drug loading content of 7.58% (w/w). These properties were comparable to those of Lupron Depot 30 mg, a commercial product. In vitro release of leuprolide at 37 °C from both formulations was sustained for up to 126 days and showed a similarity factor (f2) of 51.0. In the pharmacokinetic study, the plasma leuprolide concentration after subcutaneous injection of Leuprolide Depot 3 M or Lupron Depot 30 mg remained at approximately 0.1 ng/mL for up to 98 days. There were no significant differences in the pharmacokinetic parameters between the two formulations. Moreover, the plasma testosterone level was effectively suppressed to less than 0.5 ng/mL until the end of the evaluation. Conclusion These results suggest that Leuprolide Depot 3 M and Lupron Depot 30 mg are expected to have comparable efficacy profiles in clinical settings, which should be confirmed in further clinical studies.
Isolation and Characterization of the Colletotrichum acutatum ABC Transporter CaABC1
Kim, Suyoung,Park, Sook-Young,Kim, Hyejeong,Kim, Dongyoung,Lee, Seon-Woo,Kim, Heung Tae,Lee, Jong-Hwan,Choi, Woobong The Korean Society of Plant Pathology 2014 Plant Pathology Journal Vol.30 No.4
Fungi tolerate exposure to various abiotic stresses, including cytotoxic compounds and fungicides, via their ATP-driven efflux pumps belonging to ATP-binding cassette (ABC) transporters. To clarify the molecular basis of interaction between the fungus and various abiotic stresses including fungicides, we constructed a cDNA library from germinated conidia of Colletotrichum acutatum, a major anthracnose pathogen of pepper (Capsicum annum L.). Over 1,000 cDNA clones were sequenced, of which single clone exhibited significant nucleotide sequence homology to ABC transporter genes. We isolated three fosmid clones containing the C. acutatum ABC1 (CaABC1) gene in full-length from genomic DNA library screening. The CaABC1 gene consists of 4,059 bp transcript, predicting a 1,353-aa protein. The gene contains the typical ABC signature and Walker A and B motifs. The 5'-flanking region contains a CAAT motif, a TATA box, and a Kozak region. Phylogenetic and structural analysis suggested that the CaABC1 is a typical ABC transporter gene highly conserved in various fungal species, as well as in Chromista, Metazoans, and Viridiplantae. We also found that CaABC1 was up-regulated during conidiation and a minimal medium condition. Moreover, CaABC1 was induced in iprobenfos, kresoxim-methyl, thiophanate-methyl, and hygromycin B. These results demonstrate that CaABC1 is necessary for conidiation, abiotic stress, and various fungicide resistances. These results will provide the basis for further study on the function of ABC transporter genes in C. acutatum.
Genome wide analysis of rice blast pathogen, Magnaporthe oryzae, in Korea
Yoonhee KIM,Hyejeong KIM,Jinsoo KIM,Miyeon JEONG,Soyoung PARK,Suyoung KIM,Jongsun Park,Soonok KIM,Yong-Hwan LEE,Seong Sook HAN,Jae Hwan ROH,Woobong CHOI 한국작물학회 2007 한국작물학회 학술발표대회 논문집 Vol.2007 No.11
Magnaporthe oryzae is a causal pathogen of the rice blast, the most destructive disease of rice worldwide. This ascomycete fungus has been intensively studied as a model organism in plant-pathogen interactions. Recently, the genome sequence of M. oryzae 70-15 was published by International Rice Blast Consortium. This led us to investigate comparative and functional analysis of this pathogen at genome-wide level. As a first step, sequencing project of M. oryzae Korean strain KJ201 was launched to face practical interests on diversity of plant pathogens. We constructed a fosmid library with a copy number controllable pCC1 vector. Over 13,000 end reads from 6637 fosmid clones were generated and anchored on genome sequence of the strain 70-15. Currently, 9,793 end reads, in which 2.684, clones with both ends and 1,757 clones with on end matched, are aligned to the sequence of strain 70-15. In the next step, shotgun sequencing of fosmid clones was conducted for fine scale comparative analysis of chromosome 7 that is well defined in genome sequencing of 70-15. Totally 119 fosmid clones were pooled in region and analyzed. For reasonable intra-species comparison in genome of M. oryzae, two strains, KJ201 and Guy11, were chosen for whole genome shotgun sequencing analysis with GS454 FLX system. About 8X genome coverage sequences were obtained for each strain and being merged for comparative analysis. Genome information of other strains is being also available from China and Japanese research groups and could be joined together for extended comparative analysis and the results give more detail in genome diversity in species level.
Nature-inspired thermo-responsive multifunctional membrane adaptively hybridized with PNIPAm and PPy
Kim, Hyejeong,Kim, Kiwoong,Lee, Sang Joon Nature Publishing Group 2017 NPG Asia Materials Vol.9 No.10
<P>Specialized plant tissues, such as the epidermis of a leaf covered with stomata, consist of soft materials with deformability and electrochemical properties to achieve specific functions in response to various environmental stimuli. Stimulus-responsive hydrogels with electrochemical properties are good candidates for imitating such special functionalities in nature and thus have great potential in a wide range of academic and industrial applications. However, hydrogel-incorporated conductive materials are usually mechanically rigid, which limits their application in other fields. In addition, the fabrication technology of structured functional hydrogels has low reproducibility due to the required multistep processing. Here, inspired by nature, specifically the stimulus-responsive functionalities of plants, a new thermo-responsive multifunctional hybrid membrane (HM) is synthesized through the in situ hybridization of conductive poly(pyrrole) (PPy) on a photopolymerized poly(N-isopropylacrylamide) (PNIPAm) matrix. The morphological and electrical properties of the fabricated HM are investigated to characterize various aspects of its multiple functions. In terms of morphology, the HM can be easily fabricated into various structures by smartly utilizing photopolymerization patterning, and it exhibits thermo-responsive deformability. In terms of functionality, it exhibits various electrical and charge responses to thermal stimuli. This simple and efficient fabrication method can be used as a promising platform for fabricating a variety of functional devices.</P>
Kim, Jongjung,Kim, Hyun-seung,Lee, Jae Gil,Jeong, Hyejeong,Ryu, Ji Heon,Oh, Seung M. The Electrochemical Society 2017 Journal of the Electrochemical Society Vol.164 No.14
<P>We demonstrate that lithium/silicon monoxide (SiO) cell failure can be hindered by utilizing a Lewis-basic tris(2,2,2-trifluoroethyl) phosphite (TTFP), as an electrolyte additive. In the absence of TTFP, the solid electrolyte interphase (SEI) on the SiO electrode is attacked by Lewis-acidic phosphorus pentafluoride (PF5) generated by thermal decomposition of lithium hexafluorophosphate (LiPF6) at moderately elevated temperature. The SEI damage is followed by electrolyte decomposition/film deposition on the damaged electrode surface causing film growth, which leads to severe cell polarization and eventual failure. Conversely, effective PF5 scavenging by TTFP through Lewis acid-base adduct formation decreases SEI damage and thus hinders cell failure. (c) 2017 The Electrochemical Society. All rights reserved.</P>
Kim, Dong-eun,Jung, Sunhee,Ryu, Hyung Won,Choi, Miri,Kang, Mingu,Kang, Hyunju,Yuk, Heung Joo,Jeong, Hyejeong,Baek, Jiyeon,Song, Jae-Hyoung,Kim, Janghwan,Kang, Hyojeung,Han, Sang-Bae,Oh, Sei-Ryang,Cho, Elsevier 2018 Journal of Functional Foods Vol.42 No.-
<P><B>Abstract</B></P> <P>Lytic induction of latent Epstein-Barr virus (EBV) has been considered as a therapeutic approach for efficient treatment of EBV-associated malignancies. Here, we established a robust assay system quantitatively measuring EBV lytic induction and identified three <I>Euphorbia</I> extracts as strong inducers from a screen of Korean medicinal plant extracts library. Expression of lytic genes were efficiently induced by each <I>Euphorbia</I> extract in SNU-719 (EBV-positive gastric carcinoma cells). <I>Euphorbia pekinensis</I>, out of three extracts, exhibited the most potent lytic-inducing activity. Importantly, treatment with <I>E. pekinensis</I> extract led to an obvious cytotoxic effect on SNU-719 cells, but little on MKN-74 cells (EBV-negative gastric carcinoma cells), indicating the selective oncolytic effect on EBV-positive gastric carcinoma. We further revealed that lytic-inducing activity of <I>E. pekinensis</I> was mediated by PKC/MEK signal. Moreover, we defined two structural analogs of PMA with strong lytic-inducing activity, suggesting their therapeutic applicability for the treatment of EBV-associated gastric carcinoma.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Identification of three <I>Euphorbia</I> extracts with EBV lytic-inducing activity. </LI> <LI> <I>Euphorbia</I> extracts efficiently induce lytic replication in most of cell population. </LI> <LI> <I>Euphorbia</I> extracts induce EBV reactivation through modulating PKC/MEK pathway. </LI> <LI> PMA analogs in <I>Euphorbia</I> extracts contribute to lytic induction of EBV. </LI> <LI> <I>E. pekinensis</I> extract has an oncolytic effect selectively on EBV-positive gastric carcinoma cells. </LI> </UL> </P>