http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Caries Arresting Effect of Silver Diamine Fluoride in Vietnamese Preschool Children
Yen Hoang Thi Nguyen,Masayuki Ueno,Takashi Zaitsu,Toai Nguyen,Yoko Kawaguchi 대한예방치과학회 2017 International Journal of Clinical Preventive Denti Vol.13 No.3
Objective: A 1-year longitudinal study compared the effectiveness of annual and biannual silver diamine fluoride (SDF) applications on caries arrest among preschool children. Methods: A total of 295 children aged 2 to 3 years from 6 public preschools in Vietnam were selected and divided into 3 groups: Group 1 (G1) received annual SDF (n=90), Group 2 (G2) received biannual SDF (n=99), and Group 3 (G3) did not receive SDF (n=106). Clinical oral examination was performed at baseline, 6 months and 1 year. Results: Mean ds, the main component of dmfs, were 14.92 in G1, 15.91 in G2, and 18.17 in G3 at baseline, and no significant differences were found between the 3 groups. From baseline to 6 months and to 1 year, mean ds increased significantly in all children: 1.88 and 3.75 in G1, 2.22 and 3.47 in G2, and 5.20 and 8.91 in G3. Mean ds was significantly higher in G3 than G1 and G2 at 6 months and 1 year. At baseline, about 60% of active carious surfaces were treated with SDF in both G1 and G2. The proportions of arrested caries surfaces at 6 months and 1 year were 61.8% and 47.6% in G1, and 57.7% and 64.0% in G2. Significantly higher proportions of arrested caries surfaces were observed in G2 than G1 at 1 year. Conclusion: The study demonstrated a caries arresting effect of SDF in preschool children and its effect was greater after biannual application than annual application.
Nguyen Xuan Nhiem,Pham Hai Yen,Nguyen Thi Thanh Ngan,TRANHONG QUANG,Phan Van Kiem,Chau Van Minh,Bui Huu Tai,Nguyen Xuan Cuong,Seok Bean Song,김영호 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.4
Momordica charantia is used to treat various diseases, including inflammatory conditions. Previous reports indicated that the extract of this plant inhibits activation of nuclear transcription factor-jB (NF-jB) but activates peroxisome proliferator-activated receptor (PPAR). Additionally, cucurbitane-type triterpene glycosides are the main bioactive components of the fruit of M. charantia. Therefore, we investigated the anti-inflammatory activity of 17 cucurbitane-type triterpene glycosides (1–17) isolated from this plant. Their inhibition of NF-jB and activation of PPAR activities in HepG2 cells were measured using luciferase reporter and PPAR subtype transactivation assays. Compounds 6 and 8 were found to inhibit NF-jB activation stimulated by tumor necrosis factor-a (TNFa) in a dose-dependent manner. With 50% inhibition concentration (IC50) values of 0.4 lM, compounds 6 and 8 were more potent inhibitors than the positive control, sulfasalazine (IC50 = 0.9lM). Compounds 4, 6, and 8 also inhibited TNFa-induced expressions of inducible nitric oxide synthase and cyclooxygenase-2mRNA. However, only compound 13 significantly increased PPARc transactivation.
Magnetocaloric Effect in Fe-Ni-Zr Alloys Prepared by Using the Rapidly-quenched Method
Nguyen Huy Dan,Nguyen Huu Duc,Tran Dang Thanh,Nguyen Hai Yen,Ngac An Bang,Do Thi Kim Anh,판더롱,유성초 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
Fe90−xNixZr10 (x = 0, 5, 10, 15, 20 and 25) ribbons with various thicknesses were prepared byusing a melt-spinning technique. The Curie temperature, TC, of the alloys dramatically decreasedfrom 960 K to room temperature at high quenching rates. When the alloys had an amorphousstructure, their TC strongly depended on the Ni concentration. The maximum entropy change,|Sm|max, with H = 12 kOe, of the alloys was around 1 J·kg−1K−1 at room temperature. Onthe other hand, the full width at half maximum the entropy-change peak was quite large, 85 K,which was suitable for applications in magnetic refrigerators at room temperature.
Thi, Ngoc Anh Nguyen,Thi, Hoang Yen Nguyen,Yi, Hyunjung,Joo, Sung-Jung,Shin, Kyung-Ho WILEY-VCH Verlag 2007 Physica status solidi. PSS. A, Applications and ma Vol.204 No.12
<P>Inverse giant magnetoresistance (IGMR) can be observed in multilayers with alternating two ferromagnetic layers F1 and F2 possessing opposite spin scattering asymmetries. We report here the observation of inverse current-in-plane giant magnetoresistance (CIP-IGMR) in Fe<SUB>1–x</SUB>Cr<SUB>x</SUB>/Cu/Co spin-valve systems with varying Cr concentration and FeCr-layer thickness. The highest magnitude of IGMR, –0.45%, has been achieved in the sample doped with 35 at.% Cr. It is shown that the proper substitution of Cr for Fe can alter spin-dependent scattering in the Fe layer, causing the inversion of the bulk spin scattering asymmetry coefficient therefore resulting in CIP-IGMR. The GMR has a dominant contribution to the observed inverse MR, rather than the anisotropic magnetoresistance (AMR) component. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)</P>
The Impact of Organizational Commitment on Employee Motivation: A Study in Vietnamese Enterprises
NGUYEN, Hoai Nam,LE, Quoc Hoi,TRAN, Quang Bach,TRAN, Thi Hoang Mai,NGUYEN, Thi Hai Yen,NGUYEN, Thi Thuy Quynh Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.6
The study examines direct and indirect impacts of organizational commitment on employee motivation through two mediating factors - opportunistic behavior and knowledge sharing - in Vietnamese enterprises. The samples were selected by the non-probability sampling method followed convenient sampling, relatively stratified by localities in Vietnam. The sample size was 636 employees in Vietnamese enterprises. The number of collected online questionnaires was 379, while the number of valid questionnaires was 329. In the direct survey, the number of distributed questionnaires was 750, while the number of collected questionnaires was 421 and the number of valid questionnaires was 307. The total number of valid questionnaires used for analysis was 636. The study used quantitative methods with structural equation modeling analysis. The results indicate that among the components of organizational commitment, normative commitment has both direct and indirect impacts on employee motivation through two mediating factors: opportunistic behavior and knowledge sharing. Meanwhile, affective commitment has only an indirect impact on employee motivation through these mediating factors. Continuance commitment has both direct and indirect impacts; however, it has only an indirect impact on employee motivation through opportunistic behavior. In addition, the results show opportunistic behavior has a negative impact on the knowledge sharing of employees in enterprises.
Factors Affecting Efficiency of Electronic Customs and Firm Performance in Vietnam
NGUYEN, Hang Thanh,GRANT, David Bruce,BOVIS, Christopher,NGUYEN, Thuy Thi Le,MAC, Yen Thi Hai Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.2
The paper identifies the enablers (drivers) and inhibitors (barriers) influencing e-customs implementation in Vietnam (known as a developing country with a lower technological environment) along with determining the impact of e-customs on firm performance. The survey was conducted with the representatives (managers) of firms in five cities and provinces dominating Vietnam's international trade. The data was analyzed using structural equation modeling (SEM). The findings show two significant drivers (enablers) - relative advantages and national culture, while compatibility and ease of use are the barriers. Previous studies showed that cultural dimensions related to 'uncertainty acceptance' and 'individualism' encourage innovation; however, this paper demonstrates that 'uncertainty avoidance' and 'collectivism' promote e-customs deployment in Vietnam. Previously, Vietnamese culture was known for scoring high on cultural dimensions related to 'power distance' and 'short-term orientation'. However, today, as an emerging country, Vietnamese has switched to 'low distance' and 'long-term orientation', especially in terms of e-customs innovation. Additionally, the paper also emphasized that e-customs implementation had a positive influence on firm performance in Vietnam. Based on the results of the paper, policy-makers can devise essential solutions to enhance e-customs implementation as well as managers of firms can set-up strategies to adapt to the modernized environment.
Dual-hop Relaying Networks for Short-Packet URLLCs: Performance analysis and Optimization
Nguyen Thi Yen Linh,Ngo Hoang Tu,Pham Ngoc Son,Vo Nguyen Quoc Bao 한국통신학회 2022 Journal of communications and networks Vol.24 No.4
This paper investigates short-packet communications for the dual-hop decode-and-forward relaying system to facilitate ultra-reliable and low-latency communications. In this system, based on the transmit antenna selection and partial relay selection techniques, a selected relay having the highest received signal-to- noise ratio (SNR) serves as a forwarder to support the unavailable direct link between the source and destination, whereas a max- imum ratio combining technique is leveraged at the destination to achieve the highest diversity gain. Approximated expressions of end-to-end (e2e) block error rates (BLERs) are derived over quasi-static Rayleigh fading channels and the finite-blocklength regime. To gain more insights about the performance behavior in the high-SNR regime, we provide the asymptotic analysis with two approaches, from which the qualitative conclusion based on the di- versity order is made. Furthermore, the power allocation and relay location optimization problems are also considered to minimize the asymptotic e2e BLER under the configuration constraints. Our analysis is verified through Monte-Carlo simulations, which yield the system parameters’ impact on the system performance.