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Nguyen, Van Du,Zheng, Shaohui,Han, Jiwon,Le, Viet Ha,Park, Jong-Oh,Park, Sukho Elsevier 2017 Colloids and Surfaces B Vol.154 No.-
<P><B>Abstract</B></P> <P>The aim of this work is to prepare and evaluate a novel lipid-polymer hybrid liposomal nanoplatform (hyaluronic acid-magnetic nanoparticle-liposomes, HA-MNP-LPs) as a vehicle for targeted delivery and triggered release of an anticancer drug (docetaxel, DTX) in human breast cancer cells. We first synthesize an amphiphilic hyaluronic acid hexadecylamine polymer (HA-C<SUB>16</SUB>) to enhance the targeting ability of the hybrid liposome. Next, HA-MNP-LPs are constructed to achieve an average size of 189.93±2.74nm in diameter. In addition, citric acid-coated magnetic nanoparticles (MNPs) are prepared and embedded in the aqueous cores while DTX is encapsulated in the hydrophobic bilayers of the liposomes. Experiments with coumarin 6 loaded hybrid liposomes (C6/HA-MNP-LPs) show that the hybrid liposomes have superior cellular uptake in comparison with the conventional non-targeting liposomes (C6/MNP-LPs), and the result is further confirmed by Prussian blue staining. Under near-infrared laser irradiation (NIR, 808nm), the HA-MNP-LPs aqueous solution can reach 46.7°C in 10min, and the hybrid liposomes released over 20% more drug than the non-irradiated liposomes. Using a combination of photothermal irradiation and chemotherapy, the DTX-loaded hybrid liposomes (DTX/HA-MNP-LPs) significantly enhance therapeutic efficacy, with the IC<SUB>50</SUB> value of 0.69±0.10μg/mL, which is much lower than the values for DTX monotherapy. Consequently, the prepared hybrid nanoplatform may offer a promising drug delivery vehicle with selective targeting and enhanced drug release in treating CD44-overexpressing cancers.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Novel polymer-lipid nanohybrid liposomes for active tumor targeting are synthesized. </LI> <LI> Magnetic nanoparticles and drug are encapsulated for photothermal-chemotherapy. </LI> <LI> Nanohybrid liposomes significantly enhance cellular uptake to breast cancer cells. </LI> <LI> Near-infrared light can trigger drug release from the nanohybrid liposomes. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Tran Van Toan,Myeong Lyeol Lee,Ha Sik Sim,Hye Kyung Kim,Gyu Ho Byuon,Yong Soo Choi 한국양봉학회 2014 韓國養蜂學會誌 Vol.29 No.1
There are two subspecies Apis cerana in Viet Nam, A. c. cerana and A. c. indica. Subspecies A. c. cerana distributes on Dong Van plateau, Ha Giang province in the North of Viet Nam and A. c. indica distributes in the rest areas of the country. In this paper we conducted to hybridize between virgin queen A. c. cerana in Dong Van (D) with drones A. c. indica in Ha Tay (H) and in Yen Bai (Y). Some biological characteristic of two hybrids Dong Van - Ha Tay (DH) and Dong Van - Yen Bai (DY) were studied from May to December, 2011 in Ha Tay and Son La provinces of Viet Nam. The results initially showed that egg-laying capacity of DH was 570±76 eggs/24h and DY was 572±70 eggs/24h while of these in control H was only 511±69 eggs/24h. The inbreeding rate of DH and DY were 3.71 and 2.85% respectively lower than these of D (8.11%) and H (7. 65%). Honey yields (a floral season) of DH and DY were 10.41±2.18kg/colony and 10.85±2.06kg/colony respectively, exceeded control H (8.58±1.52kg/colony) from 21.33 to 26.46%.
Determinants Influencing Housing-Option Decision of Gen Y: The Case of Vietnam
Ha Thu LUONG(Ha Thu LUONG ),Dung Manh TRAN(Dung Manh TRAN ),Dan Linh Ngoc NGUYEN(Dan Linh Ngoc NGUYEN ),Van Bao NGUYEN(Van Bao NGUYEN ),Anh Thuc LE(Anh Thuc LE ),Hieu Van PHAM(Hieu Van PHAM ) 한국유통과학회 2023 유통과학연구 Vol.21 No.7
The Impact of Capital on Growth of Small and Medium Enterprises: Evidence from Vietnam
Van Dung HA,Van Tung NGUYEN,Truong Thanh Nhan DANG 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.1
Small and medium businesses (SMEs) play a critical role in the economy, yet they are plagued by a shortage of finance. Determining the influence of cash sources both inside and outside the firm is critical to the company’s survival and growth. As a result, the purpose of this research is to determine the impact of capital on the growth of SMEs in Vietnam. The key factors of this research are equity and liabilities, which are two proxies for a firm’s capital. The data is based on the results of a survey conducted every two years from 2005 to 2015, which included over 2,600 SMEs in 20 processing and manufacturing industries in ten provinces and cities, including Hanoi, Hai Phong, Ho Chi Minh City, Ha Tay, Phu Tho, Nghe An, Quang Nam, Khanh Hoa, Lam Dong, and Long An. The findings show that characteristics such as equity capital, total workforce growth rate, and male entrepreneurs have a positive impact on enterprise growth, whereas liabilities, firm age, and export have a negative impact on enterprise growth. The study has demonstrated that equity has a positive impact while liabilities have a negative impact on the growth of Vietnamese SMEs.
Ha-Van, Nam,Seo, Chulhun Institute of Electrical and Electronics Engineers 2018 IEEE transactions on industrial electronics Vol.65 No.2
<P>In recent years, wireless power technology has been promoted for recharging systems for portable devices that are used in everyday life. The conventional technology used for this purpose, which is based on magnetically coupled resonators, has provided promising results but is limited in range and direction at the receiving terminal. In this paper, we propose an omnidirectional wireless power transfer (WPT) system with a novel cubic transmitter to achieve relatively high efficiency. Specifically, a single power source is utilized to drive the current of the transmitter without phase and current control methodology. Energy delivery is transmitted to the receiver through magnetic resonant coupling in the medium-range WPT mode. In addition, an equivalent circuit model of a coupling two-coil system is derived and mathematically analyzed. The efficiency of the proposed omnidirectional WPT system depending on the various distances between the transmitter and the receiver, as well as the transmitter structure, is evaluated via analysis and implementation. Finally, practical experimental results from the resonant coupling system confirm the theoretical analysis of the cubic transmitter and the omnidirectional power transfer capability, which demonstrate approximately 60% power transfer efficiency.</P>
Van Nguyen Tuan,Do Ha Huu,Tekalgne Mahider,Van Le Quyet,Nguyen Thang Phan,Hong Sung Hyun,Cho Jin Hyuk,Van Dao Dung,Ahn Sang Hyun,Kim Soo Young 나노기술연구협의회 2021 Nano Convergence Vol.8 No.33
Following publication of the original article [1], the affiliation of the authors was incorrectly published in the article. The affiliation which was shown in supplementary information is correct. This has been corrected with this erratum.
Molecular Characterization of Hypernodulation in Soybean
Van, Kyu-Jung,Ha, Bo-Keun,Hwang, Eun-Young,Kim, Moon-Young,Heu, Sung-Gi,Lee, Suk-Ha The Korean Society of Plant Pathology 2003 Plant Pathology Journal Vol.19 No.1
SS2-2, a hypernodulating soybean mutant was isolated by EMS mutagenesis from Sinpaldalkong 2. This auto-regulation mutant showed greater number of nodules and smaller plant size than its wild type Sinpaldalkong 2. SSR markers were used to identify DNA variation at SSR loci from different soybean LG. The only SSR marker that detected a length polymorphism between SS2-2 and its wild type ancestor was Satt294 on LG C1 instead of LG H, locating a hypernodulating gene. Sequencing data of flanking Satt294 indicated that the size variation was due to extra stretch of TTA repeats of the SSR motif in SS2-2, along with $A\longrightarrow$G transversion. In spite of phenotypic differences between the wild type and its hypernodulating mutants, genomic DNA poly-morphisms at microsatellite loci could not control regulation of nodule formation. The cDNA-AFLP method was applied to compare differential display of cDNA between Sinpaldalkong 2 and SS2-2. After isolation and sequence comparison with many AELP fragments, several interesting genes were identified. Northern blot analysis, immunolocalization and/or the yeast two-hybrid system with these genes might provide information on regulation of nodule development in SS2-2.
HA, Van Dung Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.2
This study focuses on determining the impacts of organizational culture on the accounting information system and the operational performance of small and medium-sized enterprises in Ho Chi Minh City. The paper is organized in five parts: introduction, literature review, research methodology, research results, and conclusion and policy implications. Based on the samples of 353 respondents working in small and mediumsized enterprises in Ho Chi Minh City, the research employs both qualitative and quantitative methods to find the answers for research questions. Group discussion, which yields final observed variables of the factors of organizational culture is used for qualitative method. Statistics, assessment of the reliability of Cronbach's Alpha scale, exploratory factor analysis (EFA), confirmatory factor analysis (CFA) and structural equation modeling (SEM) are used for quantitative procedure. The results show that mission, involvement and inconsistency in organizational culture positively affect the accounting information system of small and medium-sized firms in Vietnam. In addition, mission, involvement, adaptability and consistency in organizational culture are found to have positive impacts on the firm operational performance. Another finding of the study is that the accounting information system has a positive effect on operational performance of small and medium-sized firms in Vietnam.