한국어 관형사형 어미 ‘-던’의 교수-학습 모형 연구

동정정(Dong Tingting) 동아인문학회 2022 동아인문학 Vol.58 No.-

본 연구는 한국어 중급 학습자에게 한국어 관형사형 어미 ‘-던’을 보다 체계적으로 가르칠 수 있는 교수-학습 모형을 제시하는 데에 목적을 두고 있다. 2장에서는 관형사형 어미 ‘-던’의 의미 기능에 대한 선행 연구를 검토하였다. 이후 대학기관별 한국어 교재 및 한국어 문법서에서 제시하고 있는 관형사형 어미 ‘-던’의 설명을 비교하여 제시하였다. 3장에서는 교수 목표, 교수 내용, 교수 방법, 수업 운영의 실제, 평가로 구성된 관형사형 어미 ‘-던’의 교수-학습 모형을 제시하였다. 교수-학습 모형의 구성을 통하여 한국어 중급 학습자 대상으로 관형사형 어미 ‘-던’을 교수하는 과정에서 어떠한 교수 목표를 설정할지, 어떠한 내용을 가르칠지, 적절한 교수-학습 모형을 어떻게 제시할 것인지를 살펴보았다. 특히, 교수 방법에는 귀납적 접근을 적극적으로 강조하는 O(Observe)-H(Hypothesis)-E(Experiment) 교수-학습 모형을 제시하고 이를 관형사형 어미 ‘-던’의 실제 문법 수업에 적용할 수 있는 방안을 모색하였다. 4장에서는 본 연구를 요약하면서 이점을 제시하였다. The purpose of this study is to present a teaching-learning model of Adnominal Ending Forms ʻ-던ʼ that can teach Korean language to Korean learners systematically. In Chapter 2, previous study on the semantic function of Adnominal Ending Forms ʻ-던ʼ were reviewed. After that, compared the explanation of the Adnominal Ending Forms ʻ-던ʼ presented in the Korean textbooks and the Korean grammar books of university. Chapter 3 presents the teaching-learning model of Adnominal Ending Forms ʻ-던ʼ, which is composed of teaching goals, teaching contents, teaching methods, and Practice of teaching operation. Through the teaching-learning model, it focused at how the teaching goals to set, what contents to teach, and how to present an appropriate teaching-learning model in the process of teaching the Adnominal Ending Forms ʻ-던ʼ for Korean learners. Specially, in the teaching method, an O(Observe)-H(Hypothesis)-E(Experiment) teaching-learning model which actively emphasizes inductive approach was presented, the model provided a way to apply the Adnominal Ending Forms ʻ-던ʼ to the actual grammar class either. Chapter 4 summarized this study and presents advantage of the study.

Combinatorial Fine-Tuning of Phospholipase D Expression by Bacillus subtilis WB600 for the Production of Phosphatidylserine

( Tingting Huang ),( Xueqin Lv ),( Jianghua Li ),( Hyun-dong Shin ),( Guocheng Du ),( Long Liu ) 한국미생물 · 생명공학회 2018 Journal of microbiology and biotechnology Vol.28 No.12

Phospholipase D has great commercial value due to its transphosphatidylation products that can be used in the food and medicine industries. In order to construct a strain for use in the production of PLD, we employed a series of combinatorial strategies to increase PLD expression in Bacillus subtilis WB600. These strategies included screening of signal peptides, selection of different plasmids, and optimization of the sequences of the ribosome-binding site (RBS) and the spacer region. We found that using the signal peptide amyE results in the highest extracellular PLD activity (11.3 U/ml) and in a PLD expression level 5.27-fold higher than when the endogenous signal peptide is used. Furthermore, the strain harboring the recombinant expression plasmid pMA0911-PLD-amyE-his produced PLD with activity enhanced by 69.03% (19.1 U/ml). We then used the online tool \RBS Calculator v2.0 to optimize the sequences of the RBS and the spacer. Using the optimized sequences resulted in an increase in the enzyme activity by about 26.7% (24.2 U/ml). In addition, we found through a transfer experiment that the retention rate of the recombinant plasmid after 5 generations was still 100%. The final product, phosphatidylserine (PS), was successfully detected, with transphosphatidylation selectivity at 74.6%. This is similar to the values for the original producer.

Photodegradation of 17α-ethynylestradiol in nitrate aqueous solutions

Dong Ren,Tingting Bi,Shumei Gao,Xukun Li,Bin Huang,Xuejun Pan 대한환경공학회 2016 Environmental Engineering Research Vol.21 No.2

17α-Ethynylestradiol (Ee₂) has gotten growing concerns due to its widely detected in the environment and high estrogenic potency. However, the knowledge on the photochemical behaviors of Ee₂ in natural waters is still limited. Herein, the photodegradation and estrogenic potency variation of Ee₂ induced by nitrate were studied using a sunlight simulator consisted by a 300 W medium pressure mercury lamp and 290 nm cut-off filters. It was found that Ee₂ could be photodegraded at a rate of 0.0193 h-1 in pure aqueous solutions, and the photodegradation of Ee₂ could be significantly promoted by nitrate. The photodegradation removal rate of Ee₂ was increased from 9% in Milli-Q water to 85% in 2.0 mM nitrate solutions. Reactive species scavenging experiments demonstrated that the photogenerated HO? contributed about 55% to Ee₂ degradation. Fe(III), Cl- and dissolved humic acid (DHA) could inhibit the photodegradation of Ee₂ by competing the incident light and photogenerated HO?, while HCO₃ - had no influence on Ee₂ photodegradation. Ee₂ was determined to be phototransformed into organic chemicals without estrogenic potency by GC-MS and MCF-7 cell proliferation toxicity tests. These findings could extend our knowledge on the photochemical behaviors of steroid estrogens and provide information for ecological risk assessment.

IMMUNE PATTERN OF THE SEX-ROLE REVERSED SEAHORSE Hippocampus erectus, A SUPPLEMENT FOR BATEMAN’S PRINCIPLE

Tingting Lin,Dong Zhang,YinFeng Xi,Xin Liu 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.5

Primary Invasive Mucinous Adenocarcinoma of the Lung: Prognostic Value of CT Imaging Features Combined with Clinical Factors

Wang Tingting,Yang Yang,Liu Xinyue,Deng Jiajun,Wu Junqi,Hou Likun,Wu Chunyan,She Yunlang,Sun Xiwen,Xie Dong,Chen Chang 대한영상의학회 2021 Korean Journal of Radiology Vol.22 No.4

Objective: To investigate the association between CT imaging features and survival outcomes in patients with primary invasive mucinous adenocarcinoma (IMA). Materials and Methods: Preoperative CT image findings were consecutively evaluated in 317 patients with resected IMA from January 2011 to December 2015. The association between CT features and long-term survival were assessed by univariate analysis. The independent prognostic factors were identified by the multivariate Cox regression analyses. The survival comparison of IMA patients was investigated using the Kaplan-Meier method and propensity scores. Furthermore, the prognostic impact of CT features was assessed based on different imaging subtypes, and the results were adjusted using the Bonferroni method. Results: The median follow-up time was 52.8 months; the 5-year disease-free survival (DFS) and overall survival rates of resected IMAs were 68.5% and 77.6%, respectively. The univariate analyses of all IMA patients demonstrated that 15 CT imaging features, in addition to the clinicopathologic characteristics, significantly correlated with the recurrence or death of IMA patients. The multivariable analysis revealed that five of them, including imaging subtype (p = 0.002), spiculation (p < 0.001), tumor density (p = 0.008), air bronchogram (p < 0.001), emphysema (p < 0.001), and location (p = 0.029) were independent prognostic factors. The subgroup analysis demonstrated that pneumonic-type IMA had a significantly worse prognosis than solitary-type IMA. Moreover, for solitary-type IMAs, the most independent CT imaging biomarkers were air bronchogram and emphysema with an adjusted p value less than 0.05; for pneumonic-type IMA, the tumors with mixed consolidation and ground-glass opacity were associated with a longer DFS (adjusted p = 0.012). Conclusion: CT imaging features characteristic of IMA may provide prognostic information and individual risk assessment in addition to the recognized clinical predictors.

Effects of probiotics on intestinal health in high-salt diet (HSD) treated mice

Qiuxia Dong,Tingting Liang,Xuemei Cheng,Henghong Zhong,Zixian Wang,Wanying Li,Qi Qi Pang,Jia-Le Song 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10

To observe the effect of probiotics on intestinal health in a model of high-salt diet (HSD, 8%) treated mice for 49 days. Cinical (body weight, colon length and colon weight) and historical changes were evaluated. In addition, colon levels of interleukin-1β, IL-6, IL-18, IL-17A, tumor necrosis factor (TNF)-α were detected by enzyme-linked immunosorbent assay. Relative to the HSD model group, the mice in the probiotics treatment group increased in body weight, colon length, and the ratio of colon weight to length was significantly lower (P<0.05). The DAI index of mice in the intervention group was lower than that in the HSD model group (P<0.05). Histological observation also found that the intervention of probiotics is able to reduce the infiltration of inflammatory cells in colon tissue induced by HSD. The results of Masson staining suggest that the intervention of probiotics also reduces the occurrence of intestinal fibrosis in mice with colitis. Our results suggested that probiotics with an activity to improve intestinal health and reduced inflammation in HSD treated mice.

Origin of discrete current fluctuations in a single molecule junction.

Xiang, Dong,Lee, Takhee,Kim, Youngsang,Mei, Tingting,Wang, Qingling RSC Pub 2014 Nanoscale Vol.6 No.22

<P>A series of fresh molecular junctions at a single molecule level were created and the current fluctuations were studied as electrons passed through them. Our results indicate that telegraph-like current fluctuations at room temperature neither originate from electron trapping/detrapping processes nor from molecule re-conformation. Our results will be helpful in better understanding the mechanism of current fluctuations.</P>

Antiserum Preparation of Recombinant Sweet Potato Latent Virus-Lotus (SPLV-Lotus) Coat Protein and Application for Virus-Infected Lotus Plant Detection

Zhen He,Tingting Dong,Wen Chen,Tielin Wang,Haifeng Gan,LiangJun Li 한국식물병리학회 2020 Plant Pathology Journal Vol.36 No.6

Lotus is one of the most important aquatic vegetables in China. Previously, we detected sweet potato latent virus from lotus (SPLV-lotus) and found that it has highly significant sequence diversity with SPLV-sweet potato isolates (SPLV-sp). Here, we developed serological methods for the detection of SPLV-lotus in Chinese lotus cultivation areas. Based on the high sensitivity of SPLV-lotus coat protein antiserum, rapid, sensitive and large-scale diagnosis methods of enzyme-linked immunosorbent assay (ELISA) and dot blot in lotus planting area were developed. The established ELISA and dot blot diagnostic methods can be used to detect SPLVlotus from samples successfully. And our results also showed that the SPLV-lotus and sweet potato isolates appeared clearly distinction in serology. Our study provides a high-throughput, sensitive, and rapid diagnostic method based on serology that can detect SPLV on lotus, which is suggested to be included in viral disease management approach due to its good detection level.

Evolutionary Rates and Phylogeographical Analysis of Odontoglossum Ringspot Virus Based on the 166 Coat Protein Gene Sequences

Zhen He,Tingting Dong,Weiwen Wu,Wen Chen,Xian Liu,Liangjun Li 한국식물병리학회 2019 Plant Pathology Journal Vol.35 No.5

Odontoglossum ringspot virus (ORSV) is a member of the genus Tobamovirus. It is one of the most prevalent viruses infecting orchids worldwide. Earlier studies reported the genetic variability of ORSV isolates from Korea and China. However, the evolutionary rate, timescale, and phylogeographical analyses of ORSV were unclear. Twenty-one coat protein (CP) gene sequences of ORSV were determined in this study, and used them together with 145 CP sequences obtained from GenBank to infer the genetic diversities, evolutionary rate, timescale and migration of ORSV populations. Evolutionary rate of ORSV populations was 1.25 × 10−3 nucleotides/site/y. The most recent common ancestors came from 30 year ago (95% confidence intervals, 26- 40). Based on CP gene, ORSV migrated from mainland China and South Korea to Taiwan island, Germany, Australia, Singapore, and Indonesia, and it also circulated within east Asia. Our study is the first attempt to evaluate the evolutionary rates, timescales and migration dynamics of ORSV.

Evolutionary Rates and Phylogeographical Analysis of Odontoglossum Ringspot Virus Based on the 166 Coat Protein Gene Sequences

He, Zhen,Dong, Tingting,Wu, Weiwen,Chen, Wen,Liu, Xian,Li, Liangjun The Korean Society of Plant Pathology 2019 Plant Pathology Journal Vol.35 No.5

Odontoglossum ringspot virus (ORSV) is a member of the genus Tobamovirus. It is one of the most prevalent viruses infecting orchids worldwide. Earlier studies reported the genetic variability of ORSV isolates from Korea and China. However, the evolutionary rate, timescale, and phylogeographical analyses of ORSV were unclear. Twenty-one coat protein (CP) gene sequences of ORSV were determined in this study, and used them together with 145 CP sequences obtained from GenBank to infer the genetic diversities, evolutionary rate, timescale and migration of ORSV populations. Evolutionary rate of ORSV populations was $1.25{\times}10^{-3}nucleotides/site/y$. The most recent common ancestors came from 30 year ago (95% confidence intervals, 26-40). Based on CP gene, ORSV migrated from mainland China and South Korea to Taiwan island, Germany, Australia, Singapore, and Indonesia, and it also circulated within east Asia. Our study is the first attempt to evaluate the evolutionary rates, timescales and migration dynamics of ORSV.