Vinh Phuc Province Research Articles

Enhancing pest management - Utilizing supplementary food spray to harness predatory insects against fall armyworm in maize crop of Vinh Phuc Province, Vietnam

The effect of supplementary food spray on the fall armyworm (Spodoptera frugiperda) and beneficial insects (predominantly predatory insects) was studied in commercial maize field experiments from 2020 to 2022. The food spray formulation was developed from local ingredients in Vietnam, both with and without neem extract. The sugar-based rice dough product attracted and sustained beneficial insects, significantly reducing fall armyworm populations. Compared to conventional insecticide treatments, the net margin achieved in plots treated with food spray was higher ($3,467) to $3,394 in the conventional insecticide-treated plots demonstrating its economic viability (1 AUD=17.28 VND). Our study observed an average predator-to-prey ratio of 9.2:1 per plant in the food-spray-treated plots, and that was effective in managing the fall armyworm throughout the season. We propose that this ratio can serve as a valuable parameter and decisionmaking tool in food spray-based Integrated Pest Management (IPM) programs against fall armyworm in maize fields. Therefore, we suggest that food sprays can be incorporated into IPM strategies to successfully manage fall armyworm infestation in maize crop.

Spatial Mapping of On-road Traffic Emission for Air Quality Management: A Case of Vinh Phuc Province

Vinh Phuc province is in the northern key economic region of Vietnam. The province has been facing challenges in air quality management as the number of vehicles has rapidly increased to meet the rising demand for transportation resources. This research was aimed to conduct an emission inventory and to build a spatial emission map for traffic activities in an attempt to improve air quality management in Vinh Phuc province. The vehicles were categorized into 5 groups: motorcycles, cars, light-duty vehicles (LDVs), heavy-duty vehicles (HDVs) and buses. Meanwhile, the streets were also categorized into 5 groups: highways, rural roads, urban streets, suburban streets and industrial streets. The results showed that motorcycles were the main means of transportation (93% of total vehicles) and they were also the major contributors to total emissions of NOx, CO, VOCs (volatile organic compounds), CH4, NMVOCs (non-methane volatile organic compounds) and especially in the cases of CO, CH4, VOC and NMVOC emissions which contributed more than 90% of emissions. Cars were the main source of SO2 emissions, contributing 51% of total SO2 road traffic emissions. The emissions of TSP (total suspended particulate), PM10 and PM2.5 were mostly generated from buses (about 32%), followed by motorcycles (about 18%). LDVs and HDVs contributed 18% and 15% to total particulate matter emissions, respectively. Spatial distribution analysis of CO, NOx, SO2, TSP, NMVOC and PM2.5 which involved visual identification in polluted areas, showing that high emissions were in the southeast part of the province and the most polluted areas were Vinh Yen city, followed by Binh Xuyen district and Phuc Yen city. These results provide suggestions for local governments on how to design effective air quality control strategies.

Effects of some types of organic fertilisers on growth, yield and quality of Cucumis sativus L. grown in Vinh Phuc province under greenhouse conditions

The study was conducted to evaluate the effects of organic fertilisers on the growth, yield, and quality of the Khassib RZ F1 cucumber variety in Vinh Phuc. The one-factor experiment was arranged in a completely randomised block design with 3 replications, including 4 treatments (fertilise for 1 hectare) including: (1) Control: Use 100% inorganic fertiliser (150 kg N + 90 kg P2O5 + 150 kg K2O); (2) CT1: 25% inorganic fertiliser + 22.5 tons of composted chicken manure; (3) CT2: 25% inorganic fertiliser + 18 tons of vermicompost; (4) CT3: 25% inorganic fertiliser + 3750 kg of Que Lam 01 microbial organic fertiliser. The results showed that using earthworm organic fertiliser (CT2) had the highest actual yield. The fruiting rate in CT2 reached the highest at 68.55%, CT3 using Que Lam 01 microbial organic fertiliser had the lowest fruiting rate of 59.71%. CT2 achieved the highest number of fruits plant-1, 4.82 fruits plant-1. The actual yield was highest in CT2 (15.96 kg plot-1), and lowest in the control treatment (11.39 kg plot-1). The nitrate accumulated in cucumbers in all treatments was below the threshold. The vermicompost fertiliser treatment (CT2) also gave good quality indicators of cucumbers such as thick intestine and very crispy taste. From these results, CT2 treatment with 25% inorganic fertiliser and 18 tons of vermicompost is suitable for the growth, development, yield, and quality of the Khassib RZ F1 cucumber variety in Vinh Phuc province.

Description of Trypoxylonsicklum sp. nov. from Vietnam and a key to species in the Trypoxylonfulvocollare group (Hymenoptera, Crabronidae).

Trypoxylon Latreille, 1796 (Hymenoptera, Crabronidae) consists of 633 known species worldwide and the genus is divided into numerous species groups. In Vietnam, 19 species of Trypoxylon have been recorded to date. In this study, a new species, Trypoxylonsicklum Pham and Antropov sp. nov. is described and illustrated from Vinh Phuc Province, Vietnam. The new species is the second member of the Trypoxylonfulvocollare species group. A key to species in the Trypoxylonfulvocollaris group is presented. Trypoxylonsicklum Pham and Antropov sp. nov., is described as a new species and is the second member of the Trypoxylonfulvocollare species group. A key to species in the Trypoxylonfulvocollaris group is presented.

Flood damage assessment for the Phan-Ca Lo River basin in Vinh Phuc Province, Vietnam

ABSTRACT In this research, the authors aim to evaluate the damage caused by floods in Vinh Phuc Province. The study incorporates the construction of hydro-hydraulic models and the development of damage functions for the main elements at risk. In order to ensure the accuracy of the calculated results, the hydro-hydraulic models and damage curves are verified for their reasonableness. The outcomes of this study give us an overview of flood damage in the research area. It indicates that the potential level of flood damage is a matter of significant concern, with an annual damage estimate of approximately 6.9 million USD. The research also reveals the distribution of damage by sector and by space. According to the research findings, the greatest damage was in Vinh Tuong District, where most of the damage was caused by flooding of agricultural land. In contrast, residential buildings in the area suffered relatively little damage compared to agricultural land. This information is crucial for decision-makers to implement effective and targeted mitigation measures.

Molecular identification of Fusarium oxysporum f. sp. cubense (Foc) causing Fusarium wilt disease of Tieu hong banana cultivar in the Red River Delta of Vietnam

The Red River Delta is one of primary banana-producing regions in Vietnam, and it has been afflicted by Fusarium wilt disease, caused by Fusarium oxysporum f. sp. cubense (Foc). This study aimed to identify Foc strains from banana-diseased samples collected from six different provinces in this region. Foc’s identity was confirmed based on morphological characteristics, artificial inoculation on the Tieu hong banana cultivar, and through DNA sequencing and phylogenetic analysis of PCR products amplified by race-specific primer pairs (Foc-1/Foc-2, Foc TR4-F/FocTR4-R). Ten Foc TR4 strains were identified, including VP1(2), VP1(5), and VP2(6) strains were found in Vinh Phuc Province, ML02.2 strain in Ha Noi City, MS1T2 strain in Hung Yen province, BV03 and BV06 strains in Hai Phong City, and QG1(R), QG4(T), QH2(R) strains in Thai Binh province. This discovery underscores the importance of appropriately identifying causal pathogens for integrated pest management of Fusarium wilt disease in the Red River Delta.

Widely targeted metabolomics reveals the species‐specific, matureness‐specific and post‐harvest‐specific discriminations in the chemical profiles of Vietnamese endemic golden camellias

SummaryVietnam is one of the countries with the highest diversity of golden camellias in the world, with more than forty endemic species. However, studies on Vietnamese golden camellias need to be expanded to fill a knowledge gap on these species' chemical profiles and pharmacological properties. This qualitative study focuses on six golden camellias: four endemic species from Tam Dao district, Vinh Phuc province, including Camellia hakodae, Camellia phanii, Camellia tamdaoensis, Camellia tienii and two species commonly cultivated in Quang Ninh province including Camellia petelotii and Camellia euphlebia. A mutual profile of 131 metabolites was obtained by using widely targeted metabolomics analysis using ultra‐performance liquid chromatography coupled with tandem mass spectrometry. Comparative metabolomics was performed among leaf extracts of six golden teas, between young and mature leaves and between freeze‐drying and oven‐drying leaves to discriminate these species, and determine the effect of developmental stage and post‐harvesting method on the plant metabolism. The PLS‐DA model successfully illustrated a clear separation of the six species and suggested apigenin C‐glycoside derivatives as chemical markers for the diversity. Young and mature leaves of all six species also produced distinguished metabolomes, differentiated by mostly amino acid derivatives. The multivariate analysis also indicated the conversion of some flavonoids and amino acids induced by heat in the drying process. These results offer metabolite markers for quality control of Vietnamese golden camellias and recommendations for their usage and preparation.

Chemical composition, enzyme inhibitory activities, and molecular docking studies of essential oil of Knema globularia leaves from Vietnam

In the present work, chemical composition, enzyme inhibitory activities, and molecular docking studies of essential oil (EO) of Knema globularia leaves collected from Vinh Phuc Province, Vietnam, were investigated. The EO from the leaves of K. globularia was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS) analysis. The leaf EO yield was 0.14 ± 0.01% (w/w), comprising 39 identified components, constituting 96.77% of the EO content. Notable constituents included β-caryophyllene (54.11%), α-humulene (12.67%), and (E)-β-ocimene (8.82%). Enzyme inhibitions were assessed via the α-amylase inhibitory assay (IC50 = 282.71 ± 10.06 μg/mL) and tyrosinase inhibitory assay (IC50 = 993.92 ± 37.40 μg/mL). The molecular docking method has been employed to observe valuable binding interactions and binding energy with the main compounds on the target enzymes α-amylase and tyrosinase. Caryophyllene oxide exhibits the strongest affinity with α-amylase among the other major compounds. Meanwhile, viridiflorene shows the best binding energy with the tyrosinase enzyme. This is the first study providing valuable scientific data on the in vitro inhibitory activities of α-amylase and tyrosinase enzymes of the leaf EO of K. globularia and evaluating its main compounds through a molecular docking approach on these enzyme targets.

The Management of Care, Nursing of Children Between the Ages of 6 Months and 36 Months: The Case Study of some Preschools in Vinh Phuc Province

Kindergarten education is the "foundation of foundation" of the national education system including pre-school education, general education, occupational education and university education. However, pre-school education in general and kindergarten education in particular lack in-depth theoretical and empirical research. The number of children attending kindergarten education accounts for a small percentage in pre-school education. This article focuses on researching and applying theories of educational sciences in the management of nursing and caring for kindergarten children aged from 6 months to 36 months old. The article uses review method and case study of some preschools in Vinh Phuc province. The article's findings can expand thinking about applying theories of education sciences and finding management measures to improve preschool educational quality and opportunities for children as well as the foundation for the national educational system.

CLINICAL & SUBCLINICAL CHARACTERISTICS OF PATIENTS HOSPITALIZED WITH SARS-COV-2 INFECTION IN FIELD HOSPITALS, VINH PHUC PROVINCE

CLINICAL & SUBCLINICAL CHARACTERISTICS OF PATIENTS HOSPITALIZED WITH SARS-COV-2 INFECTION IN FIELD HOSPITALS, VINH PHUC PROVINCE

Build land price WebGIS with ArcGIS online and ArcGIS API

Building and completing the land price database contributes to completing the land database, promoting digital transformation, improving the effectiveness and efficiency of the state management of land, while increasing transparency in deciding land prices, increasing interconnectivity and modernizing public land services. However, nationwide land price data has not yet been formed, studied. Reserach projects of the Ministry of Natural Resources and Environment are still mainly focusing on solving land valuation problems and building a land database. In the world, the construction of an online land price information system has been implemented on the basis of WebGIS technology and achieved many good results. This article introduces the process and experimental results of building a land price database in Dong Cuong commune, Yen Lac district, Vinh Phuc province. Tools used in this study include ArcGIS Online, ArcGIS API, Microsoft SQL SERVER; Spatial land price data is built from cadastral spatial data after standardization according to Circular No. 05/2017/TT-BTNMT of the Ministry of Natural Resources and Environment. The experimental results of building a Land Information System identify 4 groups of users: Guests, Members, Data Management and System Administrator. The land price information system is designed in the form of a Web-app, installed on the website with the address: https://giadat.gis-humg.com.

Effects of enzyme pectinase treatment on obtaining optimum red dragon juice production yield from Vinh Phuc province

Red dragon (Hylocereus polyrhizus) has been one of the main cash crops of Vinh Phuc province in recent years. In addition to its consumption as a fresh fruit, dragon can be processed into a variety of commercial products. This research aims to determine basic parameters to obtain the optimum dragon juice production yield for further processing procedures. Pectin (“natural glue” acts as a binding agent for the structure of cell walls as well as most plant cells) in dragon, has a great effect on juice extraction due to its capacity to increase flesh viscosity. The method applied in this study is using enzyme pectinase to reduce viscosity and increase the juice production yield. The results showed that the treatment of red dragon with enzyme Pectinex Ultra SP-L with a concentration of 0.6 g/kg in 80 minutes and a production yield of 77.56%.

Pain and its Interference with Daily Activities among Patients with Cancer in Vinh Phuc Province and Some Related Factors

Objective: This study was conducted to determine the pain severity, pain interference severity with daily activities, and pain-related factors, pain interference-related factors among patients with cancer in Vinh Phuc province. Materials and methods: A cross-sectional descriptive study was conducted on 116 patients with cancer aged 18 years and older in Vinh Phuc province from January 2023 to the end of June 2023. Results: The overall average pain score and pain interference score of cancer patients were 3.64±1.5 and 4.57±1.95. Mild pain at 56.9%, moderate pain at 37.9%, and severe pain at 5.2%. Pain interference was mild 33.6%, moderate 50.9%, severe 13.8%, and no obstacle 1.7%. The factors affecting pain are education (Z=-2.26,p=0.024), disease stage (χ2=11.79,p=0.008), pain medication used (χ2=74.56,p=0.00), and the patient's condition (Z=-4.42,p=0.00). Factors affecting pain interference are education (Z=-2.22,p=0.027), disease stage (χ2=9.88,p=0.02), analgesic used (χ2=15.75,p=0.00), perfomance status (Z =-7.1,p=0.00), cancer type (χ2 = 13.16,p=0.04), and pain of patients (χ2 =17.16,p=0.00). Conclusions: Pain and its interference with daily activities in moderate and severe patients with cancer account for a relatively high rate. The pain of patients with cancer was related to education, stage of disease, pain medication used, and performance status (ECOG). These factors and cancer type are associated with pain interference. The pain of patients with cancer is related to pain interference.

Air emission inventory and air quality modelling for developing countries: A case of Vinh Phuc province, Vietnam

Vinh Phuc is a province in the Northern Key Economic Region with a developed industry, a high population rate, and a relatively high traffic density. Along with economic growth, environmental protection in general, and air quality improvement in particular are two challenges that Vinh Phuc authorities must identify in the coming years. To do so, total emission load data must be acquired in order to establish a pollution distribution map for the entire Vinh Phuc province. The paper’s aim is to provide: (i) air emissions inventory, and (ii) the application of the model to build a map of pollution distribution in Vinh Phuc province. Different methods are used in this study, including (i) emission inventory utilizing both bottom-up and top-down techniques [1], (ii) air quality simulation applying the Finite Volume Model - Transport and Air Pollution Model [2] (FVM-TAPOM), and (iii) other approaches such as interview method, statistical tool, geographic information system (GIS), expert method, etc. According to research findings, motorbikes account for more than 90% of the concentration of pollutants for traffic activities. Iron and steel industries has the highest emission among 15 industries and straw burning activities account for more than 70% of total area source emissions. An emissions distribution map for traffic and industry sources was developed based on air quality simulation which showed that Vinh Yen city has the highest emissions among 09 districts and cities in Vinh Phuc province. The study also identified the causes of air pollution in Vinh Phuc province, providing remedies for the management agency to release plans and activities to minimize Vinh Phuc province emissions and ensure the local community’s air quality and health.

Current Situation of Coordination Management among Families, Schools, and Society in the Care and Education of Children in Preschools

The management of coordination activities among families, schools, and society in the care and education of children in preschools is a system of purposeful and planned impacts, in accordance with the laws of the managing entities, towards the managed entities in the coordination activities among families, schools, and society, aiming to achieve comprehensive care, education, and development goals for children. The principal of the preschool is the managing entity responsible for effective coordination among families, schools, and society in the care and education of children in preschools. This study surveyed the current situation of coordination management among families, schools, and society in the care and education of children in preschools in Lap Thach District, Vinh Phuc Province

COMPARISON OF rbcL AND trnH-psbA DNA BARCODES IN DIVERSE CAMELLIA SPECIES COLLECTION IN VIETNAM

Camellia is a large genus in the tea family of Theaceae. In this genus, several species serve different purposes, such as, medicinal and ornamental plants and beverage production. Thus, country-wide cultivation of various species of Camellia genus sought to alleviate poverty and promote economic development in many regions. However, studies on evaluating its genetic resources as a foundation for the conservation and development of this plant are yet to start. Currently, using DNA barcoding often serves as a highly reliable approach to identifying and characterizing numerous plants. In the presented study, a total of 10 Camellia accessions collected from Dong Bua village, Tam Quan commune, District Tam Dao, and Vinh Phuc province, Vietnam, underwent study during 2020–2022 at Ho Chi Minh City University of Food Industry, Vietnam. Evaluation of two DNA barcoding regions, namely, rbcL and trnH-psbA, transpired for their ability to distinguish the Camellia accessions belonging to different species in Vietnam. The results revealed a significant difference in the DNA sequences of the rbcL and trnH-psbA regions among the Camellia species. In addition, the trnH-psbA barcode region also showed higher effectiveness versus the rbcL region in recognizing various species of Camellia. The results authenticated the potential of DNA barcoding in the management, conservation, and development of the genetic resources of Camellia in Vietnam.

Research on suitable plant densities for South American cavendish banana plants in land consolidation and exchange in Vinh Phuc province

Vinh Tuong is the leading district in land consolidation and exchange in Vinh Phuc province. The district's land area for plotting and changing fields is the land along the Red river, which is very suitable for bananas to grow and develop. In 2019-2021, Vinh Tuong farmers put the “Tieu Hong” banana variety into production, but the rate of plants suffering from tuber rot is high, growth is poor, and yield is low. The South American cavendish banana variety has many advantages over other banana varieties, such as healthy growth, good pest resistance, and high yield... However, planting density has a great influence on growth and development. The study was carried out from January 2022 to December 2022, with 4 planting densities: 3,330, 2,000, 1,600 and 1,340 plants/ha. As a result of this study, the research team determined that with a planting density of 2,000 plants/ha (2.5x2 m), plants with good stem growth, good leaves, and few pests and diseases, yield 55,200 kg/ha. This is the most suitable density for the South American cavendish banana variety produced in the Vinh Tuong district.

One new species and one new record of Nephelomilta Hampson (Lepidoptera, Erebidae, Arctiinae) from Southeast Asia

A new species, Nephelomilta vinhphuciensis sp. nov. is described from Vietnam (Vinh Phuc province) along with the nominate species, N. sumatrana (van Eecke, 1927) newly recorded from Thailand (Ranong province). Illustrations of adults and male genitalia of the examined species are presented.

Kết quả cung cấp dịch vụ y tế và một số yếu tố ảnh hưởng tại các Trạm Y tế xã, thị trấn của huyện Sông Lô, tỉnh Vĩnh Phúc giai đoạn 2019-2021

Objectives: Describe the results of the healthcare services expanded program on immunization (EPI), reproductive health, and influencing factors at 17 commune health stations (CHS) in Song Lo District, Vinh Phuc Province from 2019-2021. Methods: This is a cross-sectional study design applying mixed methods. Quantitative data was collected by reports of 17 CHS. Qualitative data were collected from 6 in-depth interviews (IDIs) with the Hospital manager and head doctors and 3 focus group discussions (FGDs) with the CHS manager and healthcare workers. Quantitative data were analyzed using descriptive statistics. Qualitative data were recorded, transcribed, and analyzed by thematic coding. Results: 17/17 CHS had well-performed EPI and reproductive health. The vaccination rate for the first and second Covid-19 was over 95%. In 2019-2021, The full immunization coverage for children under 1-year-old was over 95%; The percentage of women giving birth was managing pregnancy, tetanus vaccination, and medical staff support high (>99%). Healthcare provided by CHS was not sufficient. 3/17 CHS had not performed 8 basic healthcare services. 17 CHS performed 80,9-87,1% of the medicines from the model lists of essential medicines. 5/17 CHS performed under 70% of the registered technical procedures. Qualitative data showed that factors positively influenced the results of healthcare services were: effective supervision and monitoring. Whereas, factors negatively affected the results of healthcare services were: the lack of human resources; staff training; the lack of finance, the lack of money for healthcare workers; The lack of human resources, medicines, and medical equipment; The lack of policy of attracting high-quality human resources. The covid-19 pandemic still sees complicated developments. It affected to health worker and the quality of healthcare provided. Recommendations: Song Lo medical center should continue to monitor, and assess CHS. The need for building technical capacity for the healthcare worker. It is essential to enhance financial resources for CHS and healthcare worker. Providing more human resources, especially specialists, pharmacists medicines. Providing more medicines, and medical equipment such as cardiovascular, tuberculosis drugs, echograph, and electrocardiogram,…especially for CHS. Providing midwives for those stations such as Tan Lap, Bach Luu, Phuong Khoan Nhu Thuy, Nhao Son, Tu Yen CHS. Keywords: Commune health station, healthcare, healthcare worker

Cyrtomium calcis sp. nov. and six new records of the shield fern family (Dryopteridaceae) from Vietnam

We describe a new species of Cyrtomium, C. calcis, from northern Vietnam and southern China, and report new records of six species in two fern genera, Arachniodes and Polystichum, of Dryopteridaceae, i.e., Arachniodes amabilis (from Lamdong Province), A. amoena (Quangtri Province), A. fengii (Nghean Province), A. globisora (Thanhhoa, Quangtri, and Laocai provinces), and A. nigrossora (Vinhphuc Province), and Polystichum ariticulatipilosum (Hagiang Province). The new species of Cyrtomium most closely resembles C. pachyphyllum, but can be distinguished from the latter in the shape of petiole scales, number of lateral pinna pairs, venation, and lamina shape. Detailed description, images, notes, type information, examined specimens, distribution, and habitat are provided for the new species and new records. The status of the new species is provisionally assessed here as endangered (EN) following the IUCN Categories and Criteria.