Discordance between quantitative ultrasound and dual-energy X-ray absorptiometry in bone mineral density: The Vietnam Osteoporosis Study

Huy G. Nguyen,Khanh B. Lieu,Thao P. Ho-Le,Lan T. Ho-Pham,Tuan V. Nguyen 대한골다공증학회 2021 Osteoporosis and Sarcopenia Vol.7 No.1

Objectives: Calcaneal quantitative ultrasound measurement (QUS) has been considered an alternative to dual-energy X-ray absorptiometry (DXA) based bone mineral density (BMD) for assessing bone health. This study sought to examine the utility of QUS as an osteoporosis screening tool by evaluating the correlation between QUS and DXA. Methods: The study was a part of the Vietnam Osteoporosis Study that involved 1270 women and 773 men aged 18 years and older. BMD at the femoral neck, total hip and lumbar spine was measured using DXA. Osteoporosis was diagnosed based on the femoral neck T-score using World Health Organization criteria. Broadband ultrasound attenuation (BUA) at the calcaneus was measured by QUS. The concordance between BUA and BMD was analyzed by the linear regression model. Results: In all individuals, BUA modestly correlated with femoral neck BMD (r ¼ 0.35; P < 0.0001) and lumbar spine BMD (r ¼ 0.34; P < 0.0001) in both men and women. In individuals aged 50 years and older, approximately 16% (n ¼ 92/575) of women and 3.2% (n ¼ 10/314) of men were diagnosed to have osteoporosis. Only 0.9% (n ¼ 5/575) women and 1.0% (n ¼ 3/314) men were classified as “Low BUA”. The kappa coefficient of concordance between BMD and BUA classification was 0.09 (95% CI, 0.04 to 0.15) for women and 0.12 (95% CI, 0.03 to 0.22) for men. Conclusions: In this population-based study, QUS BUA modestly correlated with DXA BMD, suggesting that BUA is not a reliable method for screening of osteoporosis

Temperature at immature and adult stages differentially affects mating duration and egg production of Neoseiulus californicus females mated once (Acari: Phytoseiidae)

Thao T.P. Nguyen,,Hiroshi Amano 한국응용곤충학회 2010 Journal of Asia-Pacific Entomology Vol.13 No.1

A series of experiments was conducted to investigate whether temperatures of 18 °C, 25 °C, 30 °C, and 35 °C and a photoperiod of 16L:8D at immature and adult stages would differentially affect the mating duration and egg production of Neoseiulus californicus females mated once. Mating duration was strictly determined by ambient temperature at the time of mating, regardless of the temperatures under which they were raised. Compared with a consistent 25 °C condition, total fecundity of females decreased when temperature conditions of 18 °C, 30 °C, and 35 °C were applied during any life stage (immature, mating, and oviposition periods) or a combination of different stages. In general, however, if mites were raised in conditions of ≤25 °C, and mated and oviposited at conditions of ≥25 °C, total egg production was relatively high. Based on these results, the adaptation of mites to thermal environments was discussed.

Anti-inflammatory Triterpenoid Saponins from the Stem Bark of <i>Kalopanax pictus</i>

Quang, Tran H.,Ngan, Nguyen T. T.,Minh, Chau V.,Kiem, Phan V.,Nhiem, Nguyen X.,Tai, Bui H.,Thao, Nguyen P.,Tung, Nguyen H.,Song, Seok B.,Kim, Young H. American Chemical Society and American Society of 2011 Journal of natural products Vol.74 No.9

<P>Five new compounds, 16,23,29-trihydroxy-3-oxo-olean-12-en-28-oic acid (<B>1</B>), 4,23,29-trihydroxy-3,4-<I>seco</I>-olean-12-en-3-oate-28-oic acid (<B>2</B>), 3β,6β,23-trihydroxyolean-12-en-28-oic acid 28-<I>O</I>-β-<SMALL>d</SMALL>-glucopyranoside (<B>3</B>), 3-<I>O</I>-[2,3-di<I>-O</I>-acetyl-α-<SMALL>l</SMALL>-arabinopyranosyl]hederagenin 28-<I>O</I>-α-<SMALL>l</SMALL>-rhamnopyranosyl-(1→4)-β-<SMALL>d</SMALL>-glucopyranosyl-(1→6)-β-<SMALL>d</SMALL>-glucopyranoside (<B>4</B>), and 3-<I>O</I>-[3,4-di-<I>O</I>-acetyl-α-<SMALL>l</SMALL>-arabinopyranosyl]hederagenin 28-<I>O</I>-α-<SMALL>l</SMALL>-rhamnopyranosyl-(1→4)-β-<SMALL>d</SMALL>-glucopyranosyl-(1→6)-β-<SMALL>d</SMALL>-glucopyranoside (<B>5</B>), as well as 10 known compounds (<B>6</B>–<B>15</B>), were isolated from the stem bark of <I>Kalopanax pictus</I>. Compounds <B>1</B>–<B>5</B> and <B>7</B>–<B>14</B> inhibited TNFα-induced NF-κB transcriptional activity in HepG2 cells in a dose-dependent manner, with IC<SUB>50</SUB> values ranging from 0.6<B></B>to 16.4 μM. Furthermore, the transcriptional inhibitory function of these compounds was confirmed on the basis of decreases in COX-2 and iNOS gene expression in HepG2 cells. The structure–activity relationship of the compounds with respect to anti-inflammatory activity is also discussed.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jnprdf/2011/jnprdf.2011.74.issue-9/np200382s/production/images/medium/np-2011-00382s_0005.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/np200382s'>ACS Electronic Supporting Info</A></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/np200382s'>ACS Electronic Supporting Info</A></P>

Different Effects of Acculturative Stress and Family Life Stress on Depressive Symptoms among Married Vietnamese Immigrant Women in South Korea

Nguyen T. P. Thao 한국사회복지학회 2016 Asian Social Work and Policy Review Vol.10 No.2

Married Vietnamese immigrant women often face multiple stressors related to sociocultural adaptation and new family lives in South Korea. The purpose of this paper is to identify the different influences of acculturative and family life stress on depressive symptoms among Vietnamese immigrant wives. Data were collected through a questionnaire survey of 301 married Vietnamese immigrant women residing in South Korea. The study utilized linear regression analysis to test the relationships between the variables. The findings show that both acculturative and family life stress are positively related to depressive symptoms. Family life stress influences depressive symptoms to a greater extent than acculturative stress. The study emphasizes the significance of family-related stress on mental health among married Vietnamese immigrant women in Korea and provides some implications for research, clinical practice, and policy.

Antecedents of intention and usage toward customers’ mobile commerce: Evidence in Vietnam

한상린,T.P. Thao Nguyen,V . A nh Nguyen 한국마케팅과학회 2016 마케팅과학연구 Vol.26 No.2

This study seeks to discover the underlying drivers that can influence Vietnamese consumers’ adoption of mobile commerce. We extended the traditional Technology Acceptance Model (TAM) by integrating the quality dimensions, personal innovativeness, playfulness and cost factors. Based on the theoretical background, a hypothetical research model and research hypotheses were developed and tested by using data collected from the questionnaire survey. The results showed that, across hedonic and utilitarian tendencies, consumers in Vietnam are not willing to pay for mobile commerce, even if the service is useful and easy to use. This result is consistent with the fi ndings of previous studies in China and Malaysia, which have the same developing country context as Vietnam. This study is also undertaken to evaluate the moderating role of utilitarian and hedonic tendencies toward mobile commerce usage, to provide insights for service providers in order to formulate specifi c products or applications that match with and satisfy customers’ needs better than those of their competitors. Managerial implications and limitations of the study results are also discussed.

Why Consumers Use Mobile Commerce? - International Comparative Study of M-Commerce Model

Han, Sang-Lin,Nguyen, T.P. Thao,Nguyen, V. Anh Korean Marketing Association 2016 ASIA MARKETING JOURNAL Vol.18 No.3

Development of information and communication technology is changing commerce environment and consumer purchasing behavior has also been changed. Globalization is becoming increasingly prevalent in the world today and many factors such as culture, politics, and economics may influence the applicability of management theories. Concurrently, corporate managers are faced with the challenge of offering usable and useful applications to the local users. Besides, many scholars strongly support that the criteria for M-Commerce adoption in developing countries are different from that of developed countries, due to cultural, security, social, political, economic, and technological aspects. This research tried to investigate the differences on the adoption of mobile commerce between developed and developing countries. In this study, the motivation for studying advanced mobile phone services adoption in the South Korea and Viet Nam is presented. Second, M-Commerce adoption model is introduced as a starting point for the research model. We then integrate price, personal innovativeness, quality dimension and perceived of playfulness into our model. Next, we describe our method and report the results of our analysis. The paper concludes with a discussion of the results from both the South Korea and Viet Nam with implications.

Impact of Work Motivation on Satisfaction and Turnover of Public Universities Lecturers

PHAM, Chinh D.,HOANG, Thao P.D.,NGUYEN, Yen T. Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.2

The paper aims to examine the relationship between various types of motivation and satisfaction as well as turnover intentions of public university lecturers. Intrinsic motivation is found to affect both satisfaction and turnover, while for extrinsic motivation, only one type has a significant effect on satisfaction. The web-based questionnaire with convenience sampling was chosen to approach target respondents. Data was collected by sending a link of the questionnaire to the lecturers' email. There were 700 questionnaires collected. Of which 681 valid responses, after screening out unusual questionnaires. In order to fulfill these aims, the authors employed structural equation modeling with maximum likelihood method supported by AMOS software with 681 valid samples. The evidence confirms the high correlation between intrinsic motivation and satisfaction for university lecturers which has been shown in previous studies. With regard to extrinsic motivation, extrinsic regulation (material) is found to have a positive influence on satisfaction, meaning financial rewards and job security will lead to his contentment while introjected regulation is a source of dissatisfaction. The results also demonstrate that intrinsic motivation is negatively correlated with turnover intentions. A person who is interested in the job itself is less likely to leave his or her job due to a keen passion for it.

Why Consumers Use Mobile Commerce? - International Comparative Study of M-Commerce Model

Han, Sang-Lin,Nguyen, T.P. Thao,Nguyen, V. Anh Korean Marketing Association 2016 ASIA MARKETING JOURNAL Vol.18 No.3

Development of information and communication technology is changing commerce environment and consumer purchasing behavior has also been changed. Globalization is becoming increasingly prevalent in the world today and many factors such as culture, politics, and economics may influence the applicability of management theories. Concurrently, corporate managers are faced with the challenge of offering usable and useful applications to the local users. Besides, many scholars strongly support that the criteria for M-Commerce adoption in developing countries are different from that of developed countries, due to cultural, security, social, political, economic, and technological aspects. This research tried to investigate the differences on the adoption of mobile commerce between developed and developing countries. In this study, the motivation for studying advanced mobile phone services adoption in the South Korea and Viet Nam is presented. Second, M-Commerce adoption model is introduced as a starting point for the research model. We then integrate price, personal innovativeness, quality dimension and perceived of playfulness into our model. Next, we describe our method and report the results of our analysis. The paper concludes with a discussion of the results from both the South Korea and Viet Nam with implications.