Stilbenes and Oligostilbenes from Leaf and Stem of Vitis amurensis and Their Cytotoxic Activity

Do Thi Ha,Quan Cheng Chen,Tran Manh Hung,Tran Minh Ngoc,Phuong Thien Thuong,김홍진,성연희,민병선,배기환,윤의중 대한약학회 2009 Archives of Pharmacal Research Vol.32 No.2

Chromatographic separation of the EtOAc fraction from the leaf and stem of Vitis amurensis led to the isolation of six oligostilbenoids (i.e., r-2-viniferin (1), trans-amurensin B (2), trans-ε -viniferin (3), gnetinH (4), amurensin G (5), (+)-ampelopsin A (8)) and four stilbenoids (i.e., trans-resveratrol (6), (+)- ampelopsin F (7), piceatannol (9), and trans-piceid (10)). The structures have been identified on the basis of spectroscopic evidence and physicochemical properties. The isolates were investigated for cytotoxic activity against three cancer cell lines in vitro using the MTT assay method. Amurensin G (5) and trans-resveratrol (6) showed significant cytotoxic activity against L1210, K562 and HTC116 cancer cell lines with IC50 values ranging from 15.7 ± 2.1 to 30.9 ± 1.8 μM. (+)-Ampelopsin A (8) and trans-piceid (10) exhibited considerable cytotoxic activity against L1210 (IC50 values of 30.6 ± 4.1 and 28.7 ± 2.81μM, respectively) and K562 (IC50 values of 38.6 ± 0.82 and 24.6 ± 0.76 μM, respectively). Gnetin H (4)showed only weak cytotoxic activity against L1210 with an IC50 value of 40.1 ± 4.23 μM. On the other hand, r-2-viniverin (1), trans-amurensin B (2), trans-ε -viniferin (3), (+)-ampelopsin F (7), and piceatannol(9) exhibited no activity on three cancer cell lines.

A Review of Accounting Research Trends in the World

Tran,Thi Phuong Thanh 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-

Trends in international accounting harmonization are extensive, so that demand on accounting research to meet international standards is more necessary and instant. The purpose of this paper is to conduct a review of accounting papers and find out the main characteristics of current accounting research trends in the world. I investigate trends by examining papers published in six top accouting journals (JCR 2015) from 2015 to 2016. I used citations made by accounting papers as a proxy for ranking and examine trends in topics and methodologies of these papers. This paper’s results suggest that financial accounting topics and archival methodologies are becoming more significantly over time during the research period. Moreover, the results also show that the movement in accounting research trends from a normative perspective to a positive perspective, especially an experimental research. From these results, I discuss the major characteristics of future accounting research trends and give some implications about accounting research to Vietnamese researchers.

The Relationship Between Business Resources, Outside Cooperation, Dynamic Capability, and Performance of Startup Enterprises

Dong Van VU1,Tai Van PHAM2,Ghi Nha TRAN3,Anh Phuong Thi NGUYEN4,Cong Van NGUYEN5 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6

This study seeks to examine the relationship between business resources (through VRIN: Valuable - valuable, Rare - scarce; Inimitable - difficult to adapt, Irreplaceable - hard to replace), dynamic capability, external cooperation, and efficiency of startups operating in the seafood export sector. Research data was collected randomly and conveniently from 250 enterprises in Ba Ria-Vung Tau province, Vietnam, from October 2020 to December 2020. After excluding those ineligible, the remaining 204 enterprises meet the research conditions. With the support of SPSS-AMOS 22 dedicated software, using the 5-step Likert scale and Structural Equation Modeling (SEM), the study conducted analysis steps such as verifying convergence, discriminant value, unidirectional and scale reliability when giving the components correlated freely in the critical model by Confirmatory Factor Analysis (CFA) analysis. Results of the study have shown that the enterprise resource factor - VRIN has a positive impact on dynamic capability, and outside cooperation. However, in contrast to previous studies, we found that the relationship between enterprise resources - VRIN and performance as well as the relationship between dynamics capacity and performance is not clear. This shows that seafood exporters need to promote, exploit and effectively use this precious resource to improve business efficiency.

Assessment of the antioxidant and nematicidal activities of an aqueous extract of Chromolaena odorata (L.) King and Robins against Radopholus similis infestation in Cavendish banana plants: An in vitro and in vivo study

Tran Thi Phuong Nhung(Tran Thi Phuong Nhung ),Le Pham Tan Quoc(Le Pham Tan Quoc ) (사)한국식물생명공학회 2024 JOURNAL OF PLANT BIOTECHNOLOGY Vol.51 No.1

Factors Influencing Corporate Financial Performance: Empirical Evidence from the Textile and Garment Industry in Vietnam

Tran Thi Phuong DIU(Tran Thi Phuong DIU ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.1

Business is an important entity in every economy with its role in job creation, budget contribution, and national output. It can be said that enterprises are also one of the leading units that play a key role in implementing digital transformation, grasping science and technology, and improving labor productivity. Developing a team of enterprises that are both strong in quantity and strong in quality is an urgent requirement in many countries, including Vietnam. Vietnam is a developing country and home to many textile and garment enterprises operating due to the advantages of cheap labor and a large market, the textile and garment industry is capable of creating many jobs for the economy. Studying the factors affecting corporate financial performance across 250 textile and garment enterprises in Hanoi capital and Bac Ninh province, the research results show that when enterprises have the ability to mobilize capital, the cost is cheap, appropriate, and optimal, most businesses often achieve higher business efficiency and financial performance. In contrast, enterprises that are difficult to raise capital in the economy often achieve low financial efficiency and financial performance. The study also confirms the role of human capital in enterprises, enterprises with high human capital often achieve high profits.

Effects of Job Satisfaction on Organizational Commitment and Turnover Intention Among Vietnamese Employees in Foreign Direct Investment Enterprises

Thi Phuong Diu TRAN(Thi Phuong Diu TRAN ),Thi Van Khanh NGUYEN(Thi Van Khanh NGUYEN ),Thanh Quang DO3(Thanh Quang DO3 ),Cong Nghiep NGUYEN(Cong Nghiep NGUYEN ),Thu Thuy LUONG(Thu Thuy LUONG ) 한국유통과학회 2022 유통과학연구 Vol.20 No.10

Purpose: This article focuses on exploring the associations between job satisfaction, organizational commitment, and turnover intention. Specifically, this study estimates the impacts of Vietnamese employees’ job satisfaction on their organizational commitment and turnover intention in FDI enterprises. Research design, data and methodology: The measures are adapted from previous studies to develop a questionnaire with a seven-point Likert scale. The dataset is directly collected from 227 respondents who are employees at FDI enterprises situated in the North of Vietnam. The dataset is analyzed by quantitative approaches using SPSS 24.0 and AMOS 24.0. Results: The results show that while turnover intention is positively correlated with monthly income, it is negatively correlated with job satisfaction and organizational commitment. Also, organizational commitment is positively associated with job satisfaction among employees at FDI enterprises in Vietnam. Conclusions: The findings of this study will serve as useful references for administrators of FDI enterprises and policymakers to promote employees’ job satisfaction and retain skilled employees.

TIEP CAN TRUYEN KIEUTU HUONG SO SANH VAN HOC VA PHUONG PHAP SO SANH LOAI HINH LICH SU

Tran,Thi Phuong Phuong,Bae, Yang Soo 부산외국어대학교 어문학연구소 2000 外大語文論集 Vol.15 No.-

우리는 흔히 비교를 통해서 서로의 관련 현상의 특수성을 확인할 수 있고 그로부터 일반적 혹은 독특한 가치나 발전의 규칙을 발견할 수 있다. 본고는 이와 같은 관점에서 베트남 쯔놈문학의 걸작으로 불리우는 끼에우전의 비교에 있어서 역사유형 방법론의 적용에 관해서 살펴보고자 한다. 역사유형 방법론(historical typology)은 19세기 말에 러시아에서 출현했으며, 문학이라는 것은 민족이라는 배경 속에 존재하는 동시에 세계의 배경 속에도 놓여 있다는 것이다. 따라서 세계 역사 발전과정의 공통적인 규칙을 통해 공간적으로 멀리 떨어져 있음에도 불구하고 유사한 문학현상을 보인다고 주장한다 이러한 주장은 공간적 배경이 다르며 접촉관계가 없음에도 불구하고 유사한 문학현상이 존재하고 있다는 것을 설명하는데 유용한 방법이 된다. 그럼에도 불구하고 이 방법론은 작가들로부터 창작자의 독창성을 간과하고 있다는 비판을 받고 있다. 예를 들어, 베트남의 끼에우전과 한국의 춘향전을 비교하면 인도적 감흥과 예술 형식(인물, 줄거리, 쟝르 등)에 있어서의 유사성을 볼 수 있다. 이러한 경우에 영향 관계에 의한 유사성 측면에서는 설명이 아주 힘들어지게 된다 따라서 작품이 탄생되는 시기의 역사, 사회적 상황의 유사성을 통해서 민족 및 세계 문학의 발전의 규율을 찾아낼 수 있을 것이다. 베트남의 민족문학인 끼에우전과 외국작품을 비교할 때, 역사유형 방법론은 유럽 중심주의나 민족주의의 극단을 피할 수 있는 보다 객관적인 연구방법이 될 수 있으며 특히, 같은 동아시아 문학인 한국의 춘향전과의 비교도 중화사상의 극단을 피하면서 중국문학, 문화의 영향을 객관적으로 조명하는데 도움을 줄 수 있는 방법이 될 것이다.

The responsibility of C-terminal domain in the thermolabile haemolysin activity of Vibrio parahaemolyticus and inhibition treatments by Phellinus sp. extracts

Tran Thi Huyen,Ha Phuong Trang,Nguyen Thi-Ngan,Bui Dinh-Thanh,Le Pham Tan Quoc,Trinh Ngoc Nam 한국수산과학회 2023 Fisheries and Aquatic Sciences Vol.26 No.3

The thermolabile haemolysin (tlh) of Vibrio parahaemolyticus (Vptlh) from V. parahaemolyticus is a multiple-function enzyme, initially describes as a haemolytic factor activated by lecithin and phospholipase A2 enzymatic activity (Shinoda, 1991; Vazquez-Morado, 2021; Yanagase et al., 1970). Until now, the tlh structure has hypothesized including N-terminal and C-terminal domain, but what domain of the Vptlh structure does the haemolytic activity has not been refined yet. In this study, a 450-bp VpTLH nucleotide sequence of the entire Vptlh gene encoded the C-terminal domain cloned firstly to examine its responsibility in the activity of the Vptlh. The C-terminal domain fused with a 6-His-tag named the His-tag-VpC-terminal domain was expressed successfully in soluble form in the BL21 (DE3) PlysS cell. Remarkably, both expression and purification results confirmed a high agreement in the molecular weight of the His-tag-VpC-terminal domain was 47 kDa. This work showed the His-tag-VpC-terminal domain lysed the erythrocyte membranes in the blood agar and the phosphate buffered saline (0.9%) media without adding the lecithin substrate of the phospholipase enzyme. Haemolysis occurred at all tested diluted concentrations of His-tag-VpC-terminal domain (p < 0.05), providing evidence for the independent haemolytic activity of the His-tag-VpC-terminal domain. The content of 100 μg of the His-tag-VpC-terminal domain brought the highest haemolytic activity of 80% compared to that in the three remaining contents. Significantly, the His-tag-VpC-terminal domain demonstrated not to involve the phospholipase activity in Luria-Bertani agar supplemented with 1% (vol/vol) egg yolk emulsion. All results proved the vital responsibility of the His-tag-VpC-terminal domain in causing the haemolytic activity without the required activation by the phospholipase enzyme. Raw extracts of Phellinus igniarus and Phellinus pipi at 10–1 mg/mL inhibited the haemolytic activity of the His-tag-VpC-terminal domain from 67.7% to 87.42%, respectively. Hence applying the His-tag-VpC-terminal domain as a simple biological material to evaluate quickly potential derivatives against the Vptlh in vivo conditions will accessible and more advantageous than using the whole of the Vptlh.

한국어 학습 환경에 따른 듣기 불안 및 듣기 전략 사용 양상 연구 -베트남 대학 학습자와 국내 한국어교육기관 학습자의 차이를 중심으로-

( Tran Thi Thu Phuong ),정혜선 ( Hyeseon Jeong ) 이중언어학회 2018 이중언어학 Vol.73 No.-

This study examins listening anxiety and listening strategy use of Vietnam Learners, who have studied Korean at Universities in Vietnam and at language institutes in Korea. The study was designed to see if there are any significant differences between learners in KSL and KFL background. Moreover, the study aims to examine correlations between listening anxiety and strategy use affected by learning environment. The results of this study are as follows. First, the listening anxiety of learners in Korea was somewhat lower than that of learners in Vietnam, and the difference between the two groups were statistically significant in the data of total anxiety of listening and the anxiety of input. Second, learners in Korea used more diverse strategies than learners in Vietnam, and this was also statistically significant. The cognitive strategies of both groups were high in preference strategies. Third, in the case of learners in Korea, all strategies except the meta-cognitive strategy showed a negative correlation with anxiety, whereas the learners in Vietnam only showed negative correlation in the higher meta-cognitive and effective strategies. (Ewha Womans University)

광고언어를 통한 한국언어문화교육의 현황 및 중요성에 대한 연구

Tran Thi Phuong Giang 국제한국언어문화학회 2018 국제한국언어문화학회 학술대회 Vol.2018 No.05