http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Nhung, Tran Thi,Lee, Sang-Wha American Chemical Society 2014 ACS APPLIED MATERIALS & INTERFACES Vol.6 No.23
<P>Highly asymmetrical “flower-like” micron silver particles, so-called hierarchical silver meso-flowers (AgMFs), were facilely synthesized using ascorbic acid at room temperature in the presence of chitosan biopolymer. The time–evolution of TEM images and XRD analysis confirmed the anisotropic growth of AgMFs with single crystalline phase of which the formation mechanism was described in detail. The morphology and size of as-prepared AgMFs were tunable simply by changing the concentration of chitosan biopolymer and/or AgNO<SUB>3</SUB> precursor under otherwise identical conditions. The asymmetrically textured AgMFs dramatically enhanced Raman signals of probe molecules (2-chlorothiophenol, 4-aminothiophenol) even at a single particle level because of their surface morphologies consisting of numerous nanoedges and crevices.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/aamick/2014/aamick.2014.6.issue-23/am506297n/production/images/medium/am-2014-06297n_0001.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/am506297n'>ACS Electronic Supporting Info</A></P>
Nhung Thanh Thi Truong,Tam Huu Nguyen,Bao Kim Doan,Le-Thu T. Nguyen,Tam Hoang Luu,Chau Duc Tran,Thiet Quoc Nguyen,Ha Tran Nguyen 한국고분자학회 2021 Macromolecular Research Vol.29 No.11
In this research, three organic photocatalysts, 4-(4H-dithieno[3,2-b:2',3'- d]pyrrol-4-yl)-N,N-diphenylaniline, 4-(pyren-1-yl)-4H-dithieno[3,2-b:2',3'-d]pyrrole and 4-(6b,10-dihydroperylen-3-yl)-4H-dithieno[3,2-b:2',3'-d]pyrrole have been successfully synthesized through C-N coupling reactions. The chemical structures and the optical properties of the obtained organic photocatalysts have been characterized via 1H NMR,13C NMR, elemental analysis, and UV-Vis spectroscopy. Next, these dithieno[3,2-b:2′,3′-d]pyrrole-based photocatalysts have been used for the polymerization of methyl methacrylate, 2-(dimethylamino)ethyl methacrylate and tert-butyl methacrylate monomers under 365 nm UV irradiation, resulting in (meth)acrylate polymers with controlled molecular weights and low polydispersity indexes.
Impact of Administrative Post and Gender on Lecturers' Research Motivation in Vietnam
TRAN, Thi Kim Nhung,NGUYEN, Thanh Do,PHAM, Thanh Van,NGUYEN, Thi Lien Huong,GIANG, Minh Duc,HA, Ngoc Thang Korea Distribution Science Association 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.3
This study examines the simultaneous impact of gender and administrative post on the research motivation of university lecturers. There are 475 selected questionnaires that are qualified for data processing and the collected data are analyzed by two-way analysis of variance (ANOVA). The results show the relationship between administration involvement and scientific research of lecturers. In general, lecturers with administrative post have higher research motivation than lecturers without administrative post. More specifically, the level of administrative post has positive correlation with research motivation of female lecturers, but has negative correlation of male lecturers. It means that a female lecturer with higher administrative post also has more motivation to conduct research. Conversely, the higher administrative post a male lecturer has, the less research motivation he is. The cause of this difference is the pressure of earning money on Asian men, including Vietnamese men, who are considered to be main breadwinners of their family. When having an administration post, the more chances male lecturers have to earn money, the less time they can spend for scientific research. This suggests that the solution for managers is to perform annual assessment, fulfill promotion process, build up motivation and reward system, and establish recruitment and promotion policies.
Nhung, Tran Thi,Kang, Ik-Joong,Lee, Sang-Wha American Scientific Publishers 2013 Journal of Nanoscience and Nanotechnology Vol.13 No.8
<P>Flowerlike gold nanostructure was facilely prepared by the seed-mediated growth of gold nanoparticles in chitosan-TPP template films. Firstly, chitosan nanoparticles, spontaneously formed by inter and/or intra cross-linking with TPP, were transformed into gel-type of chitosan-TPP films under strong sonication process. After then, gold seeds (1-3 nm) were entrapped in chitosan-TPP films via electrostatic interactions, and the resulting films were subsequently used as a template for growing gold nanoparticles and subsequent formation of anisotropic gold nanoflowers. The size and optical properties of gold nanoflowers were controlled simply by changing the ratio of gold salts to chitosan-TPP template films. Gold nanoflowers consisted of many aggregated nanodots exhibited broad Plasmon-derived absorption bands with strong red-shift into NIR wavelength, which might be a good prospect for SERS and biomedical applications.</P>
Tran, Thi Nhung,Kim, Do-Gun,Ko, Seok-Oh Elsevier 2018 Journal of hazardous materials Vol.344 No.-
<P><B>Abstract</B></P> <P>While biogenic manganese oxide (BMO) generated via the oxidation of Mn(II) by the Mn-oxidizing bacteria (MOB) have received attention, the relative roles of biological activity by MOB themselves were not clearly investigated. In this study, the synergistic effects of BMO and MOB <I>Pseudomonas putida</I> strain MnB1 on the degradation of 17α-ethinylestradiol (EE2) was investigated. Experiments with BMO in the presence of <I>P. putida</I> MnB1 showed 15-fold higher removal than that with BMO alone, suggesting that EE2 degradation was mediated by the biological activity of MOB as well as abiotic reaction by BMO. Trapping experiments with pyrophosphate (PP) proved that Mn(III) intermediate formed during the biological process from Mn (II) to Mn (IV) contribute much to the EE2 removal. Also, sharp decreases in EE2 removal were observed when microbial activity was inactivated by heat treatment or sodium azide. From this study, the EE2 removal mechanisms by BMO in the presence <I>P. putida</I> MnB1 are described as follows: (1) abiotic oxidation of EE2 by BMO occurs. (2) <I>P. putida</I> MnB1 indirectly oxidizes EE2 by transferring electrons from the Mn (III) intermediate. (3) <I>P. putida</I> MnB1 continuously re-oxidizes the Mn(II) released from the oxidative degradation of EE2 by BMO, generating new Mn(III)-intermediates or BMO.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The presence of <I>P. putida</I> MnB1 significantly enhanced the removal of EE2 by BMO. </LI> <LI> EE2 degradation was mediated by the biological activity of MOB as well as abiotic reaction by BMO. </LI> <LI> A linear correlation was established between biological Mn(III)-intermediates and EE2 removal rate. </LI> <LI> EE2 oxidation by BMO and <I>P. putida</I> MnB1 involves the reduction of Mn(III)-enzyme complexes and BMO to Mn(II). </LI> <LI> The Mn(II) from Mn(III)-enzyme complexes and BMO is re-oxidized by <I>P. putida</I> MnB1, providing additional EE2 oxidation. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Tran Thi Tuyet Nhung 한국마케팅학회 2023 ASIA MARKETING JOURNAL Vol.24 No.4
In emerging countries, traditional retail, such as wet markets, still accounts for a large proportion of retail sales. Traditional retail has poor infrastructure compared to modern retail, and is often associated with problems of waste, water, and environmental pollution. Therefore, traditional retail faces extreme difficulties in achieving sustainability. This study aimed to determine what value traditional retail contributes to sustainability. We generated and applied a conceptual framework of sustainability to explore this question. We used a single case study of a small-scale wet market in Vietnam. The results showed that wet markets have significant value for the development of sustainable retail, including economic, environmental, social, and community value. This study extends the literature by providing a comprehensive and accurate view about the value of traditional retail in contributing to sustainability. It suggests strategies for traditional retail in emerging countries to survive sustainably