Hoa Binh Province Research Articles

Training and Fostering Civil Servants in Hoa Binh Province

Training and Fostering Civil Servants in Hoa Binh Province

NGHIÊN CỨU PHÁT TRIỂN THƯƠNG HIỆU “CAM CAO PHONG” Ở TỈNH HÒA BÌNH DƯỚI GÓC ĐỘ ĐỊA LÍ

In recent years, our country has been implementing the program “One Commune, One Product” (OCOP). Cao Phong orange is one of the specific products of Cao Phong district in Hoa Binh province. To develop this product as OCOP, from a geographical viewpoint, the article focuses on studying the main resources as well as the current situation of orange tree development in Cao Phong district and then proposes some solutions to contribute to maintaining the Cao Phong orange brand in the market.

Determinants of smartphone adoption and its benefits to the financial performance of agricultural households: Evidence from Hoa Binh province, Vietnam

Mobile phone usage has come to play a vital role in the enhancement of farmers’ agriculture business. Currently, the adoption of mobile phone technology is considered an important factor in enhancing farmers' access to knowledge of the agricultural market situation. This paper studies the determinants of smartphone adoption in agricultural production and examines the roles smartphone use plays in promoting agricultural firms’ performance. We collected research data from 389 agricultural households in Hoa Binh Province, Vietnam. We considered the impacts of both farmer and farm characteristics on the adoption of smartphones in agriculture. The farmers’ characteristics we examined included the influences of age, education, and gender. For the farm characteristics, we considered the impacts of farm size, farm diversification, and farm location. Using the PLS-SEM method, the results showed that gender had no impact on household smartphone adoption in agricultural production, while education, farm size, farm diversification, and farm location each had a positive effect on smartphone adoption. Farmer age and farm location both impeded smartphone adoption. In addition, as per our expectation, the use of smartphones in agricultural production helped increase the farm’s financial performance. Based on these findings, we offer suggestions to policymakers and researchers in the field of agriculture technologies.

A new genus and new species of Pupinidae(Gastropoda: Caenogastropoda) from Northern Vietnam

Chuatienpupa megacanalis gen. et sp. nov. is described from Hoa Binh province, northern Vietnam. Chuatienpupa gen. nov. is characterized by a small, pupoid-shaped, smooth, glossy shell. Peristome with two canals; anterior canal twisted funnel-shaped, appearing as a very wide groove, opening on the basal side; posterior canal continues vertically upward and forming a wide groove, which is divided by the upper palatal plica. The operculum bowl-shaped, strongly convex, its outer surface smooth, glossy, and covered by a glaze. Both shell and opercular characters distinguish this new genus from other Southeast Asian pupinid genera. General shell morphology of Chuatienpupa gen. nov. is most similar to Pupina Vignard, 1829. However, the new genus differs in having two palatal and basal plicae, a twisted anterior canal, opening on the basal side, and a solid, bowl-shaped operculum, with outer surface dome-shaped and completely smooth.

GROWTH OF NAUCLEA ORIENTALIS SPECIES OF YOUNG PLANTATION FOR BIG TIMBER PRODUCTION IN HOA BINH PROVINCE

The results of the growths and development of Nauclea orientalis species from the experimental planting model for big timber production in Hoa Binh province showed that, Nauclea orientalis trees have been adapted, growth quite well on the sites at the age of 16 months in Hoa Binh province. It is worth noting that, the model of Nauclea orientalis plantation had a high survival rate and healthy (93.5%), growths in diameter, height and average canopy diameter were 2.67 cm, 1.09 m, and 2.2 m respectively. Nauclea orientalis a native species has been performed the ability to develop branches suitably towards big timber production. The branchs of plantation are initially stable, shaped and capable of good growth and development stage. The results of the growth and development assessment from this experimental planting model are very important, not only providing valuable scientific information, but also a vivid practical basis demonstrating the ability planted and develop multi-use, and economically valuable Nauclea orientalis species, and add new varieties into the structure of forestry plant varieties for production forests in the direction of developing large timber forests in Hoa Binh province.

Prediction of Flash Flood Susceptibility of Hilly Terrain Using Deep Neural Network: A Case Study of Vietnam

Flash floods are one of the most dangerous natural disasters, especially in hilly terrain, causing loss of life, property, and infrastructures and sudden disruption of traffic. These types of floods are mostly associated with landslides and erosion of roads within a short time. Most of Vietnam is hilly and mountainous; thus, the problem due to flash flood is severe and requires systematic studies to correctly identify flood susceptible areas for proper landuse planning and traffic management. In this study, three Machine Learning (ML) methods namely Deep Learning Neural Network (DL), Correlation-based Feature Weighted Naive Bayes (CFWNB), and Adaboost (AB-CFWNB) were used for the development of flash flood susceptibility maps for hilly road section (115 km length) of National Highway (NH)-6 in Hoa Binh province, Vietnam. In the proposed models, 88 past flash flood events were used together with 14 flash floods affecting topographical and geo-environmental factors. The performance of the models was evaluated using standard statistical measures including Receiver Operating Characteristic (ROC) Curve, Area Under Curve (AUC) and Root Mean Square Error (RMSE). The results revealed that all the models performed well (AUC > 0.80) in predicting flash flood susceptibility zones, but the performance of the DL model is the best (AUC: 0.972, RMSE: 0.352). Therefore, the DL model can be applied to develop an accurate flash flood susceptibility map of hilly terrain which can be used for proper planning and designing of the highways and other infrastructure facilities besides landuse management of the area.

Isolation, selection and evaluation of α-glucosidase inhibitory activity from endophytic Streptomyces sp. isolated from Citrus myrtifolia cultivar in Hoa Binh, Vietnam

Cao Phong orange (Citrus sinensis Lour) was grown in Cao Phong district, Hoa Binh province. Citrus sinensis is Vietnam’s most valued commercial fruit. In this study, 30 microorganim strains were isolated from the samples of root, stem, and leaf of Cao Phong orange. The ratio of endophytic actinomycetes was found in different parts of the plant: root, stem, and leaf was 37%, 40%, and 23%, respectively. The isolating HBC6-2 was selected because of its high output of α-glucosidase inhibitors from 6 different strains. Morphological, physiological, and biochemical characterization showed that HBC6-2 strain belongs to the Streptomyces sp. The 16S rRNA sequence of HBC6-2 indicated 99% identity to the corresponding sequence of Streptomyces costaricanus, and was registered on GenBank with the code MT 453944.1.
 Streptomyces costaricanus EBL.HB6 was able to produce melanin yelow pigment, and its aerial and substrate mycelia have brown and yellow-grey pigment on ISP2, ISP3, ISP4, and ISP5 cultivating medium, respectively. The optimal pH range was from 5-10 and temperature from 15-40°C and exhibited salt tolerance up to 3% and utilized the carbon sources such as fructose, xylose, arabinose, cellulose, and rhamnose. In the following investigation, Streptomyces costaricanus EBL.HB6 displayed the highest α-glucosidase inhibitory activity by 68.98% among Streptomyces sp. strains

Comparative results of the average daily net radiation (Rnd) from meteorological observation data and Landsat–8 remote sensing imagery areas of Hoa Binh province

Comparative results of the average daily net radiation (Rnd) from meteorological observation data and Landsat–8 remote sensing imagery areas of Hoa Binh province

Lithocarpus pacoensis (Fagaceae) a new species from Hoa Binh Province, Vietnam

Lithocarpus pacoensis Ngoc & Son from Hoa Binh province, Northern Vietnam, is described here and illustrated. The new species is most similar to Lithocarpus komtumensis A.Camus and Lithocarpus laoticus (Hickel & A.Camus) A.Camus in having long petioles; big cupules, usually clustered in sets of three, flat apical, nearly completely enclosing the nut; nut subglobose apex rounded or flat; scar covering 2/3 to most of the nut, convex. But the new species significantly differs from L. kontumensis and L. laoticus in having bigger leaf blades, longer petiole, much bigger cupule and nut, much more number of secondary veins, and shorter infructescences. The morphological description, comparison with related species, photographs, and preliminary conservation status descriptions are also provided.

Research on Species Composition of Terrestrial Molluscs (Mollusca: Gastropoda) in Hoa Binh Province

Hoa Binh, situated in one of the Vietnam’s biodiversity areas, has four nature reserves (Ngoc Son-Ngo Luong, Hang Kia-Pa Co, Phu Canh, and Thuong Tien nature reserves), and also shares a part of Cuc Phương and Ba Vi National Parks, as well as having many different types of habitats. However, information on the terrestrial molluscs’ biodiversity is limited. This study provides an up-to-date checklist of terrestrial molluscs species found on five habitats in Hoa Binh Province. A total of 104 species representing 60 genera and 21 families is enumerated based on systematic field surveys of 49 sampling plots. Eight of these were new records for Hoa Binh Province: Dicharax fraterculus, Rhaphaulus tonkinensis, Tortaxis pilsbryi, Deroceras laeve, Parmarion martensi, Entadella concave, Meghimatium bilineatum, and Meghimatium pictum. Forests over limestone and isolated hills in Hoa Binh Province are rich in terrestrial molluscs. In the study area, several genera (Dicharax, Cyclophorus, Diplommatina, Pupina, Oospira and Haploptychius) are restricted to limestone mountains.

Sesquiterpenoids from Tithonia diversifolia (Hemsl.) A. Gray induce apoptosis and inhibit the cell cycle progression of acute myeloid leukemia cells.

Three sesquiterpene lactones (1-3) were isolated from the aerial part of Tithonia diversifolia (Hemsl.) A. Gray grown in the Hoa Binh province in Viet Nam. The structures of these three sesquiterpene lactones were identified as tagitinin A (1), 1β-hydroxytirotundin 3-O-methyl ether (2), and tagitinin C (3) by analyzing spectroscopic data. For the first time, compound 2 was isolated from T.diversifolia growing in Viet Nam. Furthermore, contrary to existing literature, we determined that compound 1 was the major isolate. Compounds 1 and 3 significantly decreased numbers of acute myeloid leukemia OCI-AML3 cells by promoting apoptosis and causing cell cycle arrest at G0/G1 phase at concentrations as low as 2.5μg/mL (compound 1) and 0.25μg/mL (compound 3). Additionally, all three compounds showed cytotoxic activity against five human cancer cell lines (A549, T24, Huh-7, 8505, and SNU-1), with IC50 values ranging from 1.32±0.14 to 46.34±2.74μM. Overall, our findings suggest that compounds 1 and 3 may be potential anti-cancer therapeutics and thus warrant further study.

Bias-Corrected IDF Curves From Satellite-Based Rainfall for HoaBinh Province, Vietnam

Satellite-based rainfall is extremely valuable data to quantify the probability of occurrence of rainfall events but is still uncertain to a certain extent. Therefore, this study firstly evaluates the performance of the satellite-based rainfall, PERSIANN-CCS, with rain gauge rainfall. The power transformation method is then applied to correct the satellite-based rainfall. Importantly, the Intensity-Duration-Frequency (IDF) curves are then constructed with the return periods of 5, 10, 25, 50, 100 and 200 years using the Gumbel probability distribution. The results show an efficiency of power transformation on satellite-based rainfall for both rainfall amount and events. It is especially noticed that it is well matched between bias-corrected satellite-based and rain gauge IDF curves duration 12-, 24-, 48- and 72-hour as a particular. For the duration of less than 12-hour, satellite-based IDF curves without bias correction significantly fit the rain-gauge IDF curves within the considered periods.

Knowledge and practice in preventing chemical contamination of food by producers, traders, consumers, and participants in food safety management in Lac Thuy district, Hoa Binh province in 2021

The situation of contaminated food is becoming more and more serious, especially the hazards of chemical contamination. Our study aims to determine the knowledge and practice in preventing chemical contamination of food of producers, traders, consumers and participants in food safety management in Lac Thuy district, Hoa Bình province. The results show that for producers and traders: 52.8% know that alkaline dyes are harmful to health, 13.3% know that there are substitutes for alkaline dyes. 17.1% of producers use food colorants in food processing and 81.6% of traders suspect that food has industrial colorants. For managers: 42.2% received training on food safety. The time of participating as an inspection collaborator was mainly from 1-5 years (58.5%). The tasks performed during the inspection were mainly assessment of sanitary conditions (47.1%) and assessment of raw materials and additives (30.4%). About consumers: 100% have heard of borax and food colorants, 93.3% and 94.6% think that if long-term consumption of food with industrial coloring, borax can cause chronic poisoning, 82.3% said that it is necessary to abolish the entire batch of goods if detecting food with industrial colorants, borax.  

Food chemical contamination condition in Lac Thuy district, Hoa Binh province surveillance in 2021

Pesticides, formol, borax, and unpermitted colorants using in food production chain still need to control in Vietnam. Our study aimed to determine the chemical contamination in some common food samples collected at production facilities, business stores, wholesale food supply markets in Lac Thuy district. As the results, borax detected at the ratio of 15.9%, in which "Cha" accounted for the highest rate of 25%, " gio lon" was 21.4%; the lowest rate was vermicelli 7.7% and noodle soup 8.3%. The ratio of alkaline dye contaminated was quite high at 58.5%; in which sausages and melon seeds accounted for the highest proportion of over 80%, and the lowest was “Su Se” cake and “Com” cake with 33.3%. Formol was detected at 24.3%, in which rice noodle and vermicelli detected over 30%. The ratio of pesticide residues in fruits and vegetables was 35.6%, in which beans and pulses was contaminated highest ratio with 60%, following is vegetables with 55%, and tomatoes and lettuce with lowest ratio of over 10%.

Seroprevalence and Associated Risk Factors of Trichinellosis and T. Solium Cysticercosis in Indigenous Pigs in Hoa Binh Province, Vietnam.

Trichinellosis and cysticercosis remain challenges to human health and animal productivity worldwide, especially in developing countries. While information on the occurrence of both diseases is infrequent, they are endemic in parts of Vietnam and mainly related to indigenous pigs kept by ethnic minorities. This study aimed to determine the seroprevalence and risk factors of both diseases in indigenous pigs and explore the perception and awareness of both human and pig trichinellosis and cysticercosis of pig farmers. A total of 352 pig sera samples from 131 holdings were collected and analyzed using ELISA antibody tests in six communes in the Da Bac districts of Hoa Binh province, Vietnam. A survey was conducted with representatives from these households to understand the knowledge and perspective on food-borne parasitic diseases. Overall, the seroprevalence of trichinellosis and T. solium cysticercosis was 13.6% (95% CI 10.2–17.7) and 1.7% (95% CI 0.6–3.7), respectively. The seroprevalence of trichinellosis was significantly higher in female and older pigs. Risk perception and knowledge of interviewed people on both human and pig trichinellosis and cysticercosis of pig farmers was poor. Risky practices, including free roaming of pigs and eating undercooked or fermented pork, were observed. Educational and awareness campaigns aligned with further research on feasible practice changes are critical to addressing these issues.

Thực hành hỗ trợ tuân thủ điều trị của người chăm sóc chính người bệnh tâm thần phân liệt quản lý tại trạm y tế xã, phường, thành phố Hoà Bình, tỉnh Hoà Bình năm 2021

Objective: This study aimed to explore practice among primary caregivers related to treatment adherence support of patients with schizophrenia managed by commune health stations in Hoa Binh city, Hoa Binh province. Methods: This was a cross-sectional study. Data were collected from 317 primary caregivers of patients with schizophrenia managed by commune health stations in Hoa Binh city, Hoa Binh province in 2001 through face-to-face interview, using a structured questionnaire. Results: The proportion of primary caregivers who practiced proper care was 76.3%. Factors associated with proper practices related to treatment adherence include adequate knowledge about caring for patients with schizophrenia, family income at normal level or above, and caring for patients having been treated for more than 5 years. Conclusion: The study suggests the importance of interventions aimed to enhance knowledge and practice among primary caregivers in supporting treatment adherence of patients with schizophrenia, especially for those from low-income family and having short-time experience of care.

Torrent rainfall-induced large-scale karst limestone slope collapse at Khanh waterfall, Hoa Binh Province, Vietnam

In recent years, many landslides have occurred in Vietnam, particularly in the Northern mountainous region during the rainy season from May to October. On the morning of October 12, 2017, the Khanh waterfall landslide in Khanh Village, Hoa Binh Province, Northern Vietnam occurred. The landslide killed eighteen people and destroyed five houses. Topographical and geological surveys were conducted around the area to determine its causes. The rainfall data and flow discharge were also analyzed. The results showed that this collapse was different from some previous ones collapsed due to the erosion at the toe of the slope. Khanh waterfall landslide occurred due to the increasing amount of water in cracks and caves in the limestone layer in the slope. The collapse process was simulated based on Coulomb mixture theory. The numerical simulation results show similarities with the actual collapse process. The results provide indicators for assessing the risk of such limestone waterfall landslides in the future.

In Vitro Propagation of the Dendrobium anosmum Lindl. Collected in Vietnam

Hoa Binh province is one of the best places for orchids in Vietnam. The climate and environment of Hoa Binh province are favorable for the development of orchids, especially rare indigenous ones. Dendrobium anosmum Lindl., which stands out because of the unique fragrance and colors, is one of the most popular varieties in Hoa Binh province. To meet the increasing demands of the industrial market as well as to contribute to the preservation and development of genetic resources of Dendrobium sp. in Hoa Binh province, propagating D. anosmum Lindl. is a crucial step. Plant tissue culture, which has been applied to improve reproducibility of orchids for many years, is still an effective method, especially for large-scale propagation. Studies on in vitro propagation of D. anosmum Lindl. from Hoa Binh province showed that growth regulators (BA, kinetin, α-NAA) did not have a significant effect on protocorm initiation because D. anosmum Lind. from Hoa Binh province already has a high rate of regeneration. However, MS medium + 1.0 mg/L kinetin + 0.5 mg/L α-NAA + 30 g sucrose + 8.0 g agar per liter, pH 5.7–5.8 was the optimal medium to increase shoot length. The MS medium + 1.0 g activated charcoal + 30 g sucrose + 8.0 g agar per liter, pH 5.7–5.8 was the most suitable medium for shoot growth—after 6 weeks of culture, the average shoot length was 1.09 cm, the average number of leaves was 6.13, the average number of roots was 3.17, and the average root length was 1.11 cm—about 3.3, 4.17, 3.41, and 1.67 times higher, respectively, than in the control (without activated charcoal).

Deformation forecasting of a hydropower dam by hybridizing a long short‐term memory deep learning network with the coronavirus optimization algorithm

AbstractThe safety operation and management of hydropower dam play a critical role in social‐economic development and ensure people's safety in many countries; therefore, modeling and forecasting the hydropower dam's deformations with high accuracy is crucial. This research aims to propose and validate a new model based on deep learning long short‐term memory (LSTM) and the coronavirus optimization algorithm (CVOA), named CVOA‐LSTM, for forecasting the deformations of the hydropower dam. The second‐largest hydropower dam of Vietnam, located in the Hoa Binh province, is focused. Herein, we used the LSTM to establish the deformation model, whereas the CVOA was utilized to optimize the three parameters of the LSTM, the number of hidden layers, the learning rate, and the dropout. The efficacy of the proposed CVOA‐LSTM model is assessed by comparing its forecasting performance with state‐of‐the‐art benchmarks, sequential minimal optimization for support vector regression, Gaussian process, M5' model tree, multilayer perceptron neural network, reduced error pruning tree, random tree, random forest, and radial basis function neural network. The result shows that the proposed CVOA‐LSTM model has high forecasting capability (R2 = 0.874, root mean square error = 0.34, mean absolute error = 0.23) and outperforms the benchmarks. We conclude that CVOA‐LSTM is a new tool that can be considered to forecast the hydropower dam's deformations.

CLEAR-CUTTING OF ACACIA PLANTATION IN A HEADWATER CATCHMENT OF VIETNAM: ENVIRONMENTAL IMPACTS AND SOLUTIONS FOR SUSTAINABLE MANAGEMENT

To assess impacts of clear-cutting at a pure Acacia plantation on soil and water quality, a 7-year-old Acacia forest within the area of 2.5 ha in Hoa Binh province was selected to investigate at 2 stages: before and after clear-cutting. 03 standard plots (500 m2/plot) at 3 positions (downhill, mid-hill and top-hill) for determining forest characteristics, 30 sampling subplots (1 m2/plot) for monitoring forest covers and some soil properties. 15 of 30 subplots were used to measure infiltration; and 4 points along forest flow were chosen to take water sampling for assessing water quality. Main findings include: (1) Forest cover decreased within the removal of tree, reduction of understory vegetation cover, litter and biomass ranged from 10 to 20%; (2) Soil quality decreased by 8.35% dropped of porosity due to the rise of 8.57% in dry bulk density; (3) Soil nutrients: Organic matter, total Phosphorus and Nitrogen amount decreased at the proportion of 20.91%, 62.86% and 27.86% respectively after clear-cutting; (4) Total infiltration rate decreased after harvesting. The positions that had high infiltration rate before clear-cutting tended to infiltrate noticeably less (Downhill: reducing from 397.7 mm to 201.2 mm); (5) Soil erosion increased significantly after cutting and was remarkably higher in comparison with other research results due to the slope of researching area; (6) Most water quality indicators were at acceptable values, however, TSS and COD were 180-time and 5.6-time higher than water standard at B1 category (water for irrigation) according to QCVN 08:2015/BTNMT; (7) Some solutions suggested for sustainable management are (a) replacing production planted forest at researching site by protection forest or natural forest or (b) remaining commercial plantation forest but adjust management methods.