Effect of 1-MCP and Temperature on the Quality of Broccoli

( Nguyen Thi Hang Phuong ),( Toshitaka Uchino ),( Fumihiko Tanaka ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1

Broccoli (Brassica oleracea L.) is a highly perishable product and its postharvest life and quality greatly depend on storage conditions, such as temperature, atmospheric composition, relative humidity and ethylene. The effect of 1-methylcyclopropene (1-MCP) and temperature on quality of broccoli was investigated in the present study. Broccoli was treated with air (control) and 1.0 μL/L 1-MCP for 15 h at 15°C, and were then stored at 10°C and 0°C for 25 days and 50 days, respectively. The results indicated that 1-MCP treated samples were in good quality during 50 days of storage at 0°C or 20 days of storage at 10°C compared to control. The present study showed that 1-MCP treatments extended shelf life, reduced postharvest deterioration, retarded chlorophyll degradation, respiration rate and inhibited the increase of color changes and ethylene production in broccoli. Treatments of 1-MCP reduced the rate of decrease of ascorbic acid in broccoli when comparing to those in the control. Broccoli treated with 1.0 μL/L 1-MCP and stored at 0°C showed the significantly higher in quality compared to that of other treatments. These results indicated that 1-MCP was effective in preserving the overall quality of broccoli and could be a suitable candidate for extending shelf life, maintaining visual quality and reducing loss of quality in broccoli stored at 0°C.

Triterpenoid saponins from the roots of Rosa rugosa Thunb. as rat intestinal sucrase inhibitors

Nguyen Phuong Thao,Bui Thi Thuy Luyen,주성호,Tran Manh Hung,Nguyen Xuan Cuong,Nguyen Hoai Nam,권영인,Chau Van Minh,김영호 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.10

Medicinal plants constitute an important sourceof potential therapeutic agents for diabetes. The purpose ofpresent study is to investigate the effect of root extract ofRosa rugosa Thunb. on inhibition of sucrase related todiabetes mellitus (DM). Bioassay-guided fractionation ofthe methanol extract led to the identification of 13 triterpenoidsaponins (1–13). Their structures were elucidatedon the basis of extensive spectroscopic analysis, including1D, 2D NMR, and MS. The n-butanol fraction showedpotent rat intestinal sucrase inhibitory activity with value of87.62 ± 5.84 % inhibition compared to the positive controlacarbose (50.96 ± 2.97 % inhibition at 0.02 mM). Subsequently, compounds 11–13 (1.0 mM) exhibited significantsucrase inhibitory activity, with inhibition percentagevalues of 41.17 ± 3.52, 46.80 ± 4.00, and39.39 ± 4.19 %, respectively. Whereas, compounds 2–6,8, and 10 showed moderate sucrase inhibitory activity(ranging from 13.26 ± 7.00 to 32.08 ± 6.04 % inhibition)at a same concentration. The data provide a starting pointfor creating new sucrase inhibitors, which may be usefulfor the development of effective therapies for the treatmentof DM.

Cytotoxic and anti-tumor activities of lignans from the seeds of Vietnamese nutmeg Myristica fragrans

Phuong Thien Thuong,Tran Manh Hung,Nguyen Minh Khoi,Hoang Thi My Nhung,Nguyen Thi Chinh,Nguyen Thi Quy,장태수,나민균 대한약학회 2014 Archives of Pharmacal Research Vol.37 No.3

Four lignans, meso-dihydroguaiaretic acid(DHGA), macelignan, fragransin A2 and nectandrin B,were isolated from the seeds of Myristica fragrans (Vietnamesenutmeg) and investigated for their cytotoxicactivity against eight cancer cell lines. Of these, DHGAexhibited potent cytotoxicity against H358 with IC50 valueof 10.1 lM. In addition, DHGA showed antitumor activityin allogeneic tumor-bearing mice model.

Critical Factors Affecting the Innovation Activities of Businesses: Evidence from Binh Dinh Province, Vietnam

NGUYEN, Thi Le Hang,PHAM, Ngoc Toan,DAO, Vu Phuong Linh,NGO, Thi Thanh Thuy,LE, Thi Thanh Binh Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.7

The study investigates the factors influencing the innovation activities in the enterprises in the Binh Dinh Province, Vietnam. By employing the dataset from a survey in 200 typical enterprises in Binh Dinh and using the Exploratory Factor Analysis and regression analysis, we found that there are eight factor groups affecting the innovation activities of enterprises. They include management of innovation promotion; market research capacity; leadership inspiring innovation; culture of innovation; human resources for implementing innovation; network connection; disseminating/sharing knowledge; and impact of producing/serving technology. All these factors strongly affect the innovation activities, which plays an important role in promoting the sustainable development of the Vietnamese enterprises, with the statistical significance level at 1%. Moreover, findings also show that, among these factors, the market research capacity is the strongest determinant of the innovation activity in the enterprise. An increase of 1 point of capacity of market research will increase the innovation activities in the enterprise by 0.114 point. It is followed by the management of promoting innovation, leadership inspiring innovation, and disseminating and sharing knowledge, with 0.104, 0.103 and 0.102 score, respectively. On the other hand, network connection is the weakest factor, with the score of 0.07 point.

Design of Thermostable Nanogel Systems for Use in the White Tiger Basement Reservoir to Increase the Effectiveness of Crude Oil Production

Nguyen Phuong Tung,Nguyen Thi Phuong Phong,Nguyen Hoang Duy,Nguyen Quoc Hung 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.5

This research was conducted to experimentally screen the suitability of acrylamido-2- methylpropane sulfonic acid-acrylamide (AMPS-AM) copolymer-based nanogels for using as sealants to shut-off water channels in the high-temperature and high-salinity reservoir conditions of the White Tiger oil feld. Via in situ intercalative free-radical copolymerization, nanogels have been prepared from montmorillonite-alkyl ammonium clay, AMPS and AM. Two primary compositions of nanogel systems were chosen. A mixture of hexamethylenetetramine (HMTA)/phenyl acetate (PhAc) was used as a crosslinking system. The results obtained from screening the gel properties by using the bottle test method, the test under nitrogen pressure and core ooding under imitated reservoir conditions show that the NANOSEAL-1 and the NANOSEAL-2 nanogels can well satisfy the VietsovPetro (VSP) technical requirements for water isolation materials. This research was conducted to experimentally screen the suitability of acrylamido-2- methylpropane sulfonic acid-acrylamide (AMPS-AM) copolymer-based nanogels for using as sealants to shut-off water channels in the high-temperature and high-salinity reservoir conditions of the White Tiger oil feld. Via in situ intercalative free-radical copolymerization, nanogels have been prepared from montmorillonite-alkyl ammonium clay, AMPS and AM. Two primary compositions of nanogel systems were chosen. A mixture of hexamethylenetetramine (HMTA)/phenyl acetate (PhAc) was used as a crosslinking system. The results obtained from screening the gel properties by using the bottle test method, the test under nitrogen pressure and core ooding under imitated reservoir conditions show that the NANOSEAL-1 and the NANOSEAL-2 nanogels can well satisfy the VietsovPetro (VSP) technical requirements for water isolation materials.

A Study on the Poverty of Mountain People Depending on Forests

NGUYEN, Phuong Thi Minh,NGUYEN, Song Van,DO, Duc Tai,NGUYEN, Quynh Thi Thuy,DINH, Thanh Trung,NGUYEN, Hang Phan Thu Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.7

Livelihood capitals have a clear influence on livelihood development. As for the livelihood results, it has been pointed out in the analysis of the poor households that the ability of people to escape poverty depends especially on the access to livelihood capitals. This study aims to analyze the impacts of livelihood capital on poverty among mountain people who depend on forests through human capital, social capital, natural capital, physical capital and financial capital. This research employs the model of binary regression function. Independent variables x1, x2, …, xn are targets of livelihood strategy, vulnerability context, and livelihood capitals. These variables were selected to be included in the original model with dependent variable Y as poor and non-poor households. This study surveys households living in upland areas, near forests, and households of ethnic minorities. The results show that,out of the poor household rate, nearly 4% are newly-poor households or those falling back into poverty. Therefore, the government needs to pay more attention to this disadvantaged group and implements policies such as education and training policies, credit support policies, policies to support forest development, and payment for forest environmental services in the context of emerging countries like Vietnam.

A Bibliometrics Analysis of Research on Early Childhood Education in 2022

Thi-Lam Bui,Lien – Kim Thi Tran,Thi-Tham Tran,Dung-Thi My Nguyen,Ben-Phạm,Hung-Sy Ho,Linh-Phuong Hoang,Anh-Duc Hoang The Pacific Early Childhood Education Research Ass 2024 Asia-Pacific journal of research in early childhoo Vol.18 No.2

Introduction Methodology Results Conclusion, Recommendations, and Future Research Directions This research aims to find the research focus and to highlight authors, journals, and documents on early childhood education (ECE) in 2022. This article analyzed a dataset with 1586 Clarivate Web of Science indexed articles on this topic, using descriptive, co-occurrence and thematic analyses. The authors applied the preferred reporting items for systematic reviews and meta-analyses (PRISMA) flow to comply with the dataset. Excel, the R program in the Biblioshiny package, and VOSviewer version 1.7 were used for the descriptive and bibliographic analyses. The findings of this paper demonstrate the remarkable contribution of researchers from the United States and China in terms of research quantity and impact, as well as their collaboration with different researchers. The findings revealed four topics: language and speech; programmes, policies and their impact on children and preschool teachers; behaviour of preschool children; the quality of ECE. In addition, we figured out the top influential authors and journals. This study provided an overview of research in ECE in 2022 and highlighted essential issues that need to be focused on by ECE researchers and practitioners.

Research Articles : Trichoderma asperellum Chi42 Genes Encode Chitinase

( Nguyen Hoang Loc ),( Hoang Tan Quang ),( Nguyen Bao Hung ),( Nguyen Duc Huy ),( Truong Thi Bich Phuong ),( Tran Thi Thu Ha ) 한국균학회 2011 韓國菌學會誌 Vol.39 No.3

Four Trichoderma strains (CH2, SH16, PQ34, and TN42) were isolated from soil samples collected from Quang Tri and Thua Thien Hue provinces in Vietnam. The strains exhibited high chitinolytic secretion. Strain PQ34 formed the largest zone of chitinase-mediated clearance (> 4 cm in diameter) in agar containing 1% (w/v) colloidal chitin. Analysis of the internal transcribed spacer regions of these strains indicated that they were Trichoderma asperellum. The molecular weights of the chitinases were approximately 42 kDa. Chitinase genes (chi42) of T. asperellum strains TN42, CH2, SH16, and PQ34 were 98~99% homologous to the ech42 gene of T. harzianum CB-Pin-01 (accession No. DQ166036). The deduced amino acid sequences of both T. asperellum strains SH16 and TN42 shared 100% similarity.

Impacts of Corporate Social Responsibility and Authenticity on Brand Loyalty: Evidence from the Chain Coffee Shop Industry in Vietnam

MAI, Thi Cam Tu,NGUYEN, Hong Son,PHAN, Nguyen Ngoc Diem,LE, Minh Hang,LUU, Phuong Khanh,NGUYEN, Thi Thu Thao,NGUYEN, Thi Thu Trang Korea Distribution Science Association 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.6

This study examines the impact of CSR and its authenticity on customer loyalty through the brand image in the chain coffee shop industry. Using qualitative and quantitative methods, 601 survey questionnaires were distributed, of which 491 were analyzed. The results show that CSR has a positive impact on brand image and customer loyalty. In addition, authenticity does not moderate the impact of CSR on brand image and loyalty, as it is difficult for customers to verify the authenticity of CSR action programs. This study emphasizes the importance of CSR action programs and authenticity for businesses to sustainably enhance their distinctive brand image and customer loyalty. Therefore, for sustainable development in the future, managers of coffee shop chains need to focus on the following issues. First, the most important thing is the right awareness of businesses regarding CSR and CSR authenticity. Third, businesses should strengthen the transparency of CSR action programs in various media so that consumers can easily verify authenticity, to increase brand image and improve customer loyalty.

The Impact of Vietnam’s New Rural Development Program on Rural Household Income: Cross-sectional Evidence Covering Communes That Hosted Korea’s Saemaul Undong Program

Manh Hung Do,비엣 흥 응웬(Viet Hung Nguyen),투하 응웬 티(Thu Ha Nguyen Thi),한 호앙 티(Hanh Hoang Thi),프엉 투 응웬 티(Phuong Thu Nguyen Thi) 영남대학교 박정희새마을연구원 2018 새마을학연구 Vol.3 No.2

베트남의 1986년도 정치경제 개혁, 즉 도어머이(Doi Moi)는 베트남의 경제를 개방적 사회주의경제로 전환시켰으며, 이를 계기로 베트남 경제는 획기적으로 근대화되었다. 그러나 이 과정에서 급속한 도시화는 도농 간 불균형을 가져왔으며, 이 도농 간 격차를 줄이기 위해 베트남 정부는 2006년에 새농촌개발(NRD) 프로그램을 도입하기에 이르렀다. 이 프로그램은 농촌 지역의 사회기반시설의 확충과 생활환경의 개선, 생산 활동의 종합적 발전, 소득증대, 농민들의 육체적ㆍ정신적 건강 증진 등을 목표로 하고 있었다. 이 논문의 주된 목적은 NRD 프로그램의 시행이 NRD의 궁극적 목적 중 하나인 농가소득 증대에 미치는 영향에 대한 과학적 증거를 제시하는 데 있다. 또한 이와 더불어 새마을운동의 시범사업을 실시한 지역과 그렇지 않은 지역 간에 소득 증대에서 차이가 있는가를 다중회귀분석을 통해 밝혀보고자 한다. 분석 결과는 NRD의 시행이 상당히 긍정적 결과를 가져왔으며 코민 수준에서 농가소득 증대와 생활환경의 개선에 중요한 영향을 미쳤다는 것을 보여주었다. 또한 도로 건설, 전기 도입, 주민 역량 강화, 제도의 발전 등이 농가소득 증대에 큰 영향을 미쳤음을 확인했다. 회귀분석의 결과는 또한 새마을 사업을 시행하고 있는 코뮌들이 그렇지 않은 코뮌에 비해 연소득이 1200만 동(미화530달러) 더 많다(또는 41.8% 더 높다)는 것을 보여주었다. The economic and political reform of Vietnam in 1986 (the Doi Moi) has transformed its economy positively and significantly into an open socialist-oriented market economy. This caused a dramatic change of Vietnam’s economy towards modernization. However, the urbanization process created an unbalanced development between the urban and rural regions. To solve the gaps between these regions, the government of Vietnam firstly introduced the New Rural Development (NRD) program in 2006 to encourage and mobilize a revolutionary and campaign to improve local infrastructure, living condition, comprehensive development of related-production activities in rural regions, as well as increase income, and improve physical and mental health of people living in rural communities. One of the main purposes of this research paper is aimed at providing a scientific evidence for justifying whether the NRD implementation could have an impact on rural households’ income, one of the ultimate goals of the NRD, and examining the difference of incomes between Saemaul Undong (SU)-piloted provinces with the other provinces by employing a multiple regression model. The analysis results show that the NRD implementation has shown positive results and significant impacts on increasing rural households’ income and improving living conditions at the communal levels. Criteria such as road development, access to electricity, capacity building, and institutional development have significantly influenced on the households’ income. The regression model also indicates that the communes currently implementing SU pilots have a better annual income of 12 million VND (~US$ 530) or 41.8% higher than the other communes.