Two new species of Camellia (Theaceae) from Vietnam

Lieu Thi Nguyen,Ninh Tran,Uematsu CHIYOMI,Katayama HIRONORI,Dung Van Luong,Son Thanh Hoang,Ky Danh NGUYEN,Hung Viet NGUYEN,Toan Canh THAI 한국식물분류학회 2018 식물 분류학회지 Vol.48 No.2

Two new species of Camellia (Theaceae) are described from Vietnam: Camellia vuquangensis Luong, Tran & L. T. Nguyen and Camellia hatinhensis Luong, Tran & L. T. Nguyen. The new taxa were col- lected from Vu Quang National Park in the center of Vietnam. The new finds are morphologically dissimilar to all known Camellia species. Recent Camellia discoveries have increased the number of species recorded in Viet- nam from 50 to 75, making Vietnam a center of diversity and a crucial area for more research into the diversity and distributions of Camellia.

The Information Distribution Role of Facebook in Universities

Thi Nguyet Dung NGUYEN,Thi Thu Huong NGUYEN,Thi Phuong Anh NGUYEN,Thi Thu Huong NGUYEN,Thi Phuong Thao VU 한국유통과학회 2022 유통과학연구 Vol.20 No.5

Purpose: The paper employs the theory of planned behaviour, social identity theory, social presence theory, and social exchange theory to propose a model for using the social media platform Facebook in distributing information in universities. Research design, data and methodology: Data were obtained from 618 students at Hanoi University of Industry (HaUI) in Vietnam. The study used structural equation modeling in SPSS and the statistical analysis software AMOS version 24 to explore the information distribution role of Facebook. Results: Findings reveal that subjective norms and social presence play a key role in driving students to use Facebook for studying. In addition, university administrators can boost student satisfaction and academic achievement through Facebook. Interestingly, students who strongly identify with the brand name of the university have a strong connection with the university are more likely to engage in behaviors supportive toward the university. Conclusions: These findings show that Facebook had played a key information distribution role in universities. Thus, the study provides the executive board of the university and teachers can gain new understanding of why students employ Facebook for studying as well as capitalize on the platform to improve several operational metrics such as brand identification, student satisfaction, and academic achievement.

Spectrum of Lysosomal Storage Disease Targeted for Newborn Screening in Vietnam

Dung, Vu Chi,Ngoc, Can Thi Bich,Khanh, Nguyen Ngoc,Mai, Do Thi Thanh,Thao, Bui Phuong,Mai, Tran Thi Chi,Ha, Nguyen Thu,Huong, Nguyen Thi Mai,Nam, Nguyen Hoang,Hai, Le Thanh,Tomatsu, Shunji,Yoo, Han-Wo Association for Research of MPS and Rare Diseases 2017 Journal of mucopolysaccharidosis and rare disease Vol.3 No.1

Advanced Magnetic Materials Produced by Using Rapid Quenching Technology

Nguyen Hoang Nghi,Nguyen Van Dung,Trinh Thi Thanh Nga,Bui Thi Khanh Nhung,Mai Thanh Tung,Nguyen Huu Tinh,Hoang Nhat Hieu,Bui Xuan Chien,Nguyen Thi Hong Tam 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.6

Amorphous alloys produced by using a rapid quenching technique are considered to be a precursor for producing nanosized and multiphase structures by precipitation (the top-down method). By using this technique, several new magnetic materials with different magnetic properties based on different physical mechanisms have been manufactured and investigated. Three new magnetic materials, a nanocrystalline soft magnetic material, a soft-hard permanent magnet and a Me-3d granular alloy with a GMR effect, what were prepared under local conditions, are presented and discussed in the experimental point of view. Amorphous alloys produced by using a rapid quenching technique are considered to be a precursor for producing nanosized and multiphase structures by precipitation (the top-down method). By using this technique, several new magnetic materials with different magnetic properties based on different physical mechanisms have been manufactured and investigated. Three new magnetic materials, a nanocrystalline soft magnetic material, a soft-hard permanent magnet and a Me-3d granular alloy with a GMR effect, what were prepared under local conditions, are presented and discussed in the experimental point of view.

Four novel mutations in the androgen receptor gene from Vietnamese patients with androgen insensitivity syndrome

Nguyen Thu Hien,Nguyen Duc Quan,Kim Lien Nguyen Thi,Thi Thanh Ngan Nguyen,Nguyen Thi Phuong Mai,Tran Ngoc Dung,Nguyen Huy Hoang 한국유전학회 2023 Genes & Genomics Vol.45 No.4

Background Androgens and androgen receptor (AR) are critical regulators of the masculinization process in male sexual development. The absence of a functioning AR results in the development of the androgen insensitivity syndrome (AIS), a rare disorder of sexual development (DSD) characterized by the external genitalia feminization, gynecomastia, and impaired spermatogenesis. Objective To determine the AR gene mutations associated with male DSD in four unrelated Vietnamese patients. Methods To detect the disease-causing mutations, whole exome sequencing (WES) was performed on four patients diagnosed with AIS. Sanger sequencing was then used for validation of the identified mutations. Finally, 12 web-based tools, three-dimensional protein modeling software, and the guidelines issued by the American College of Medical Genetics and Genomics were used to assess the potential pathogenicity of these mutations. Results Four distinct novel mutations, namely c.1834T > A (p.Cys612Ser), c.2122 C > G (p.Leu708Val), c.2630T > G (p.Phe877Cys), and c.2641 C > A (p.Leu881Met) in the AR gene, were identified in four AIS patients using WES. The in silico analysis results revealed that the Cys612, Leu708, Phe877, and Leu881 sites are important for an appropriate response to androgens of the AR, and mutation at these sites can have adverse effects on the AR functions, androgen–AR interaction, and AR signaling pathway. Conclusions WES and in silico analyses strongly suggested that four novel AR mutations are pathogenic and have led to the development of AIS in the four Vietnamese patients under consideration.

Novel hydroxamic acids incorporating 1-((1H-1,2,3-Triazol-4-yl)methyl)-3-hydroxyimino-indolin-2-ones: synthesis, biological evaluation, and SAR analysis

Dung, Do Thi Mai,Hai, Pham-The,Anh, Duong Tien,Huong, Le-Thi-Thu,Yen, Nguyen Thi Kim,Han, Byung Woo,Park, Eun Jae,Choi, Yeo Jin,Kang, Jong Soon,Hue, Van-Thi-My,Han, Sang-Bae,Nam, Nguyen-Hai Springer-Verlag 2018 Journal of chemical sciences Vol.130 No.6

Cigarette Smoking among Adolescents aged 13-15 in Viet Nam and Correlates of Current Cigarette Smoking: Results from GYTS 2014 Data

Le, Thi Huong,Nga, Thi Thu Vu,Nguyen, Ngoc Dung,Le, Thi Thanh Xuan,Kim, Bao Giang,Phan, Thi Hai,Doan, Thu Huyen,Luong, Ngoc Khue,Nguyen, Tuan Lam,Hoang, Van Minh,Pham, Thi Quynh Nga Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.no.sup1

The aim of this paper is to report the rate of current and ever cigarette smoking and explore correlates of current cigarette smoking among adolescents aged 13-15 in Viet Nam. This analysis was derived from GYTS survey, which comprised of 3,430 adolescents aged 13-15, conducted in 2014 in 13 cities and provinces of Viet Nam. We calculated the weighted rates of current and ever cigarette smoking and reported patterns of smoking behavior. We also performed logistic regression to explore correlates of current cigarette smoking behavior. The weighted rate of ever cigarette smoking was 9.5% (95% confidence interval (CI): 8.5 %-10.5%), in which the weighted rate among males (15.4%; 95% CI: 13.6%-17.0%) was higher than that among females (4.2%; 95% CI: 3.3%-5.1%). The weighted rate of current cigarette smoking was relatively low at 2.5% (95%CI: 2.0%-3.0%) with higher weighted rate among males (4.9%; 95% CI: 3.8%-5.9%) compared to the corresponding figure among females (0.2%; 95% CI: 0.0 %-0.5%). Current cigarette smoking was significantly higher among males than females, in students aged 15 versus 13 years old, and in students who had several or all close friends smoking and students with daily observation of smoking at school. For greater smoking reduction outcomes, we recommend that tobacco interventions for adolescents should consider targeting more male students at older ages, establish stricter adherence to school-based banning of cigarette smoking, engage both smoking and nonsmoking adolescents and empower adolescents to resist peer smoking influence as well as changing their norms or beliefs towards smoking benefits.

Determinants Influencing Tax Compliance: The Case of Vietnam

NGUYEN, Thi Thuy Du'o'ng,PHAM, Thi My Linh,LE, Thanh Tam,TRUONG, Thi Hoai Linh,TRAN, Manh Dung Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.2

The purpose of this paper is to ascertain the key factors affecting tax compliance among Vietnamese firms in Vietnam. We employ both qualitative and quantitative research methods. Qualitative research has been carried out through focus group discussions with ten chief accountants and tax officers. Quantitative research has been conducted through interviews with 200 firms (chief accountants or financial directors) in Vietnam. Analysis of the model includes the following stages: (i) Cronbach's test for reliability of the scale, (ii) exploratory factor analysis (EFA), (iii) confirmatory factor analysis (CFA), and (iv) structural equation model (SEM). The results of the research show that voluntary tax compliance is directly affected by the three factors of audit probability, corporate reputation and business ownership. The probability of audit and severity of sanctions have the strongest impact on tax compliance. Therefore, the tax authorities need to strengthen the inspection of tax declarations, tax payments and tax refunds of firms. The paper confirms that enforced tax compliance is directly affected by the three factors of audit probability, sanction severity and social norms. Voluntary compliance and compulsory compliance have an effect on tax compliance, though voluntary compliance has a more powerful impact.

SOME CHARACTERIZATIONS OF COHEN-MACAULAY MODULES IN DIMENSION > s

Dung, Nguyen Thi Korean Mathematical Society 2014 대한수학회보 Vol.51 No.2

Let (R,m) be a Noetherian local ring and M a finitely generated R-module. For an integer s > -1, we say that M is Cohen-Macaulay in dimension > s if every system of parameters of M is an M-sequence in dimension > s introduced by Brodmann-Nhan [1]. In this paper, we give some characterizations for Cohen-Macaulay modules in dimension > s in terms of the Noetherian dimension of the local cohomology modules $H^i_m(M)$, the polynomial type of M introduced by Cuong [5] and the multiplicity e($\underline{x}$;M) of M with respect to a system of parameters $\underline{x}$.

한국과 베트남의 커피 소비문화 비교 연구 – 근대 커피 소비문화를 중심으로

Nguyen Thi Hanh Dung 한국베트남학회 2023 베트남연구 Vol.21 No.2

베트남과 한국은 19 세기부터 각각 프랑스와 일본의 지배하에서 각나라로 커피가 유입된 역사를 가지고 있다. 이러한 사회적 역사적 배경의 영향으로 양국은 커피 문화와 관련하여 소비 습관과 커피 취향이 각 시대와 사회를 반영하여 발전하게 되었고, 양국의 커피 소비 문화에 대한 공통점과 차이점이 자연스럽게 발생하게 되었다. 그동안 한국과 베트남 커피 소비문화에 대한 기존 연구들은 근대 커피의 변천사나 공간을 살펴본 관점에서 많이 진행되었으나 근대 커피 소비문화를 바탕으로 양국 간의 커피 소비문화 비교 연구는 많이 거론되지 않았다. 이에 따라 본 연구는 한국과 베트남의 커피문화를 형성하는 초기인, 양국 근대 커피 소비문화의 특징으로 접근하여 공통점 및 차이점을 분석하고자 한다. 양국 근대 커피 소비문화에 커피는 신문물로서 그 당시 고위층, 지식인, 식민자를 암시하고 서민 계층, 피식민자와 차별화하는 상징적 ‘구별 짓기’ 물질로 적용되었다. 한편, 한국과 베트남의 커피 유입은 식민지 경험에서 시작되었으나 근대 커피 소비문화에서 다른 양상들이 발견된다. 그 외에 한국에 비해서 베트남 근대 커피 소비문화에는 커피에 관한 문화 변용이 더활발하게 진행되고 뚜렷하다는 부분이 있다. 한-베 수교 관계가 31 주년을 맞이하여 양국 간의 다양한 문화 교류 및 문화 변용 현상들을 기록하고 있는 배경에서 본 연구는 양국의 관련 미래 문화 교류 활동에서 좀 더 상호적인 시각과 인식에 기여할 수 있기를 희망한다. Vietnam and Korea both have a history of importing coffee during the process of becoming colonial countries. During this period, due to the influence of social and historical background, there were similarities and differences in the coffee consumption culture of the people of both countries, which influenced the coffee consumption habits and tastes of coffee in both countries nowadays. So far, many existing studies on coffee consumption culture in Korea and Vietnam have been conducted from the perspective of examining the history or space of modern coffee, but the comparative studies on coffee consumption culture between the two countries based on the coffee consumption culture from the late modern period have not been discussed much. This study approaches the characteristics of the coffee consumption cultures of Korea and Vietnam during the late modern period (from the late 19th century to the mid-20th century), which was the early stage of the formation of coffee culture in Korea and Vietnam, then analyzes the similarities and differences between two countries. In both countries' coffee consumption culture during this period, coffee was applied as a symbolic ‘distinguishing’ substance that implied the upper class, intellectuals, and colonizers at that time and differentiated them from the common class and colonized people. On the other hand, the influx of coffee into Korea and Vietnam began with the colonial experience but recorded different characteristics in the two countries. As KoreaVietnam diplomatic relations celebrate the 31st anniversary and various cultural exchanges and acculturation phenomena between the two countries are being recorded, this study hopes to contribute more mutual perspectives and perceptions in related future cultural exchange activities between the two countries.