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This study investigated the biomass production process from the laboratory to the pilot scale in order to use the nutrient-rich biomass of the diatom Thalassiosira weissflogii as live feed for white-leg shrimp (Litopenaeus vannamei) at larval stages (zoeal, mysis, and postlarval) and in commercial production in hatcheries in Vietnam. Our results showed that T. weissflogii was successfully cultured in 1–2 L Erlenmeyer flasks, 0.2–3.5 m3 composite tanks, and 6.5 m3 tubular photobioreactors, with the highest cell density of 1.6 × 106 cells mL−1 reached after 6 days of culture. Under optimal culture conditions, the protein, lipid, and carbohydrate contents in this algal biomass were 13.2%, 20.0%, and 10.0% of dry cell weight, respectively. The fatty acid composition contains high amount of palmitic acid (C16:0, 43.11% of total fatty acid), and polyunsaturated fatty acids (PUFAs), such as eicosapentaenoic acid (EPA, C20:5ω-3), approximated 16.5% of total fatty acid. In a 50 L larval rearing tank, at the optimal stocking density of 125 nauplii L−1, the survival percentage (75.55%), the total body length (from 5.376 ± 0.007 to 10.860 ± 0.030 mm), and weight (at from PL1 to PL12 stages) (from 0.145 ± 0.002 to 1.158 ± 0.005 g) of the white-leg shrimp larvae reached the highest values but the metamorphosis time (234 h) was shortest compared with the other stocking densities. Further, adding living T. weissflogii biomass to the diet of white-leg shrimp larvae at the nauplii 6 stage led to an increase in the body length, weight, and survival percentage of white-leg shrimp larvae of 21.17%, 35.7%, and 33% higher compared with those of larvae fed the control diet (without the addition of T. weissflogii), respectively. At the same time, the metamorphosis time of larvae (from Z1 to PL1) decreased by 4 h compared to the control group. In intensive ponds (area of 6400 m2 pond−1), using seed stocks at the postlarvae 12 stage that had been fed T. weissflogii, the final weight, yield, and survival percentage of the shrimp were increased by 7.3%, 14.2%, and 16.3%, respectively, compared with those of the control group. There were no statistically significant differences in the protein and carbohydrate contents in the shrimp flesh among the experimental and control group (p > 0.05). The lipid, omega-3, omega-6, and omega-9 fatty acid contents of shrimp flesh in experiment formula (per 100 g shrimp) were 1.21 g, 72.9 mg, 114 mg, and 86.1 mg, 11%, 29%, 21.6%, and 17.7% higher than that those in control, respectively. The obtained results show the great potential of using T. weissflogii as live feed on white-leg shrimp farms in Vietnam.

This study aimed to examine: (1) how the Internet has changed consumers food-buying behavior and identify its associated factors; (2) consumers’ concern about food safety information of online food products. A cross-sectional study was performed from October to December 2015 in Hanoi—a Vietnamese epicenter of food service. One thousand seven hundred and thirty six (1736) customers were randomly chosen from food establishments of 176 communes. Data were collected through face-to-face interviews using structured questionnaires. The majority of participants reported using the Internet to search for food products (81.3%). The most crucial factors influencing food purchases through the Internet were convenience (69.1%) and price (59.3%). Only one-third of participants selected products based on accurate evidence about food safety certification or food origin. The majority of participants were concerned about the expiration date (51.6%), while brand (9.8%) and food licensing information (11.3%) were often neglected. People who were:(1) female, (2) highly influenced by online relationships, and (3) having difficulty in doing usual activities were more likely to look for online food products. These findings produce practical advice to consumers when purchasing their desired food products on the Internet, to online food retailers and to the Government of Vietnam to implement appropriate legislation regarding trading online food products.

Child maltreatment remains a major health threat globally that requires the understanding of socioeconomic and cultural contexts to craft effective interventions. However, little is known about research agendas globally and the development of knowledge-producing networks in this field of study. This study aims to explore the bibliometric overview on child maltreatment publications to understand their growth from 1916 to 2018. Data from the Web of Science Core Collection were collected in May 2018. Only research articles and reviews written in the English language were included, with no restrictions by publication date. We analyzed publication years, number of papers, journals, authors, keywords and countries, and presented the countries collaboration and co-occurrence keywords analysis. From 1916 to 2018, 47,090 papers (53.0% in 2010–2018) were published in 9442 journals. Child Abuse & Neglect (2576 papers; 5.5%); Children and Youth Services Review (1130 papers; 2.4%) and Pediatrics (793 papers, 1.7%) published the most papers. The most common research areas were Psychology (16,049 papers, 34.1%), Family Studies (8225 papers, 17.5%), and Social Work (7367 papers, 15.6%). Among 192 countries with research publications, the most prolific countries were the United States (26,367 papers), England (4676 papers), Canada (3282 papers) and Australia (2664 papers). We identified 17 authors who had more than 60 scientific items. The most cited papers (with at least 600 citations) were published in 29 journals, headed by the Journal of the American Medical Association (JAMA) (7 papers) and the Lancet (5 papers). This overview of global research in child maltreatment indicated an increasing trend in this topic, with the world’s leading centers located in the Western countries led by the United States. We called for interdisciplinary research approaches to evaluating and intervening on child maltreatment, with a focus on low-middle income countries (LMICs) settings and specific contexts.

This study investigates the impact of biomass energy consumption, agricultural value added, raw material productivity, and gross domestic product growth rate on Vietnam’s environmental quality within the framework of the load capacity curve hypothesis over the period from 1986 to 2021. The analysis employs ARDL estimation and Granger causality tests to examine correlations. The results proved that agricultural value added and biomass energy are critical long-term drivers of environmental quality in Vietnam. The long-term estimation results suggest that a 1% increase in biomass energy consumption contributes to a marginal increase of 0.82% in the load capacity factor. In addition, agricultural value added appears to have a significant diminishing effect on the load capacity factor in Vietnam (an increase of 1% in agriculture value added versus a reduction of the load capacity factor by 2.28%). The study unveils a bidirectional relationship between biomass energy consumption and load capacity factor. These findings suggest that in Vietnam, biomass energy consumption improves environmental quality. In turn, improved environmental quality will promote biomass energy consumption.

Type of the article: Research Article AbstractThis paper aims to assess the relative importance of various determinants impacting small and medium enterprises’ (SMEs) capacity for innovation. The study employed a quantitative approach with data obtained from 462 participants working across SMEs in 2023 in Ho Chi Minh City, Vietnam. The collected data were subsequently processed and analyzed using structural equation modeling (SEM) and exploratory factor analysis (EFA). The EFA results indicated the removal of two items due to their poor fit within the variables. Furthermore, the statistical adequacy of the data for factor analysis was confirmed by a Kaiser-Meyer-Olkin (KMO) coefficient of 0.892 and a significant Bartlett’s test (Chi-square = 8177.250, p-value < 0.001). The remaining variables yielded a convergent solution in the subsequent CFA analysis, with goodness-of-fit indices meeting acceptable thresholds. The SEM results revealed four key factors influencing the innovation capability of SMEs in Ho Chi Minh City: collaboration networks, organizational culture, entrepreneurial leadership, and internal human resources, with p-values for all these factors’ estimates of 0.000. The survey respondents indicated that collaborative networks exerted the most substantial influence on the innovation capability of SMEs (with an estimate of 0.282). Subsequently, factors such as organizational culture and entrepreneurial leadership demonstrated progressively lesser degrees of impact, with corresponding coefficients of 0.266 and 0.207, respectively. Recommendations for both enterprises and state policies are then proposed.

In this viewpoint, we explore Vietnam's health system vulnerabilities and its national response to the COVID-19 pandemic, as well as critical areas of health system resilience, including health financing, workforce distribution, information systems, and governance. While Vietnam achieved early success through strong governance and mass vaccination campaigns, the pandemic revealed weaknesses in resource procurement, workforce imbalance, and limitations of its health information system. There are challenges in ensuring the rapid disbursement of financial resources and reliance on imported medical supplies, which delayed response times. Uneven healthcare workforce distribution, particularly in rural areas, further strained the health system. Although telemedicine and digital health solutions were implemented, weak digital infrastructure and inadequate information technology literacy hindered their effectiveness. Governance efforts, while generally strong, highlighted the need for better coordination and role clarity during health emergencies. Our findings identify areas for improvement, including effective resource mobilisation and allocation, enhanced digital infrastructure, expanded telemedicine access, and better support for healthcare workers. Governance enhancements, such as improved priority setting and interagency coordination, were also critical. These insights offer valuable guidance for strengthening Vietnam's health system and ensuring greater preparedness for future pandemics, but could also help other low- and middle-income countries facing similar challenges.

The paper studied the impact of human capital on energy consumption in Vietnam using the ARDL model during the period from 1986 to 2019. The results showed that there exists a long-term positive relationship between human capital and aggregate energy consumption, fossil energy consumption, average renewable energy consumption. Besides, the study also revealed the impact of economic growth on fossil energy consumption in the short term. These findings helped proposing a number of recommendations for the government such as improving the quality of human capital, using more renewable energy and the need to fund research and development.

The vulnerability, flood hazards, and exposure are three indicators to calculating and assessing flood risk in the Mekong Delta river. Flood risk assessments allows managers to understand the probability and implications of potential damage caused by floods. The vulnerability index is based on three criteria, including sensitivity and adaptive capacity related to the economic, social, and environmental aspects and benefits that floods bring to the Mekong Delta river. The flood events occurred in the years that the flood peak at Tan Chau was over 4 m, causing the most severe damage in this area. This paper will use the vulnerability index method which is the sum of the components including the sensitivity, resilience and benefits of floods to calculate and assess the flood vulnerability of 155 communes in 11 districts of An Giang province. The results showed that there are four communes were affected by average vulnerability and 151 communes with high vulnerability.

This study examined the 3-month rate of bullying experience, associated factors, and measure the relationships between bullying experience with health-related quality of life and different mental disorders among secondary school students. We performed a cross-sectional study in four secondary schools in Hanoi, Vietnam. Bullying experience was evaluated by using questions about eighteen specific-bullying behaviors. EuroQol-5 dimensions-5 levels (EQ-5D-5L) and Depression, Anxiety, and Stress Scale– 21 items (DASS-21) were used to measure health-related quality of life (HRQOL) and mental health of participants, respectively. Among 712 secondary school students, the 3-month prevalence of physical, social aggression, verbal, and sexual bullying experience were 8.4%; 31.2%; 11.9%, and 2.7%, respectively. Being bullied were negatively associated with levels of classmates and family support, as well as levels of school security. Being overweight or obese was related to a higher likelihood of suffering social aggression compared to normal BMI. Being bullied was significantly associated with the decrement of HRQOL, and the increased risk of depression, anxiety, and stress among adolescents. Findings of this study suggested that holistic approaches involving family, peers, and schools, along with enhancing school security, are potential approaches to reduce the impact of bullying on adolescents’ life and well-being.

The proliferation of “fake news” has emerged as a global public health challenge. Evidence indicates that fake news spreads faster than verified information, undermines trust, and is associated with psychological distress. This study aimed to examine Vietnamese adolescents’ and young adults’ exposure to fake news on social networking sites (SNS), their coping strategies, and related mental health outcomes. An online cross-sectional study was carried out in three cities in Vietnam (Hanoi, Tuyen Quang, and Can Tho) from September to October 2021. The questionnaire used in this study comprised five components. Multivariate ordered logistic and Linear regression models were employed to determine factors related to experiences with fake news, its coping strategies as well as associated psychological outcomes. Among 1850 participants, the majority were students (92.9%), urban residents (91.5%), and females (57.0%). Overall, 68.8% reported at least occasional exposure to fake news on social networking sites. Nearly half tended to ignore fake news (47.1%), while fewer intervened to counter its spread (16.2%) or joined in sharing it (7.1%). Frequent exposure to fake news, heavy SNS usage, and problemtic SNS usage were associated with higher PHQ-9 and GAD-7 scores, and a greater likelihood of sharing fake news. Furthermore, higher problematic internet use predicted passive (ignore) or harmful coping (join in to share). Notably, participants with greater digital literacy reported more frequent exposure. The findings highlight fake news exposure on SNS as a predictor of mental well-being in young populations. Strengthening digital literacy education, promoting healthy online engagement, and expanding mental health support systems should be prioritised in rapidly digitalising settings such as Vietnam.