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NEW RECORDS AND CONSERVATION STATUS OF BATS (MAMMALIA: CHIROPTERA) IN LANG SON UNESCO GLOBAL GEOPARK, NORTHEASTERN VIETNAM 越南东北部谅山联合国教科文组织世界地质公园蝙蝠（哺乳目：翼目）新记录及保护现状
Journal of Science Natural Science Pub Date : 2026-02-03 DOI: 10.18173/2354-1059.2026-0007
Nguyen Van Viet, Vu Dinh Thong
{"title":"NEW RECORDS AND CONSERVATION STATUS OF BATS (MAMMALIA: CHIROPTERA) IN LANG SON UNESCO GLOBAL GEOPARK, NORTHEASTERN VIETNAM","authors":"Nguyen Van Viet, Vu Dinh Thong","doi":"10.18173/2354-1059.2026-0007","DOIUrl":"https://doi.org/10.18173/2354-1059.2026-0007","url":null,"abstract":"Lang Son UNESCO Global Geopark contains extensive karst landscapes, large cave systems, and diverse vegetation types that provide highly suitable habitats for bat species. This study updated the bat species composition of the geopark through nine field surveys conducted between February 2022 and July 2025 and through a review of relevant literature. A total of 26 species belonging to 14 genera and 7 families were recorded during the surveys, including five species first recorded for the geopark. When combined with previous records, the bat fauna of the geopark currently comprises at least 41 species representing 20 genera and 8 families. Of these, 12 species are listed in the 2024 Red Data Book of Vietnam, and six species are classified as Near Threatened, Vulnerable, or Endangered in the IUCN Red List of Threatened Species, indicating national and global conservation importance. In addition, the taxonomic status of nine species is updated in accordance with recent systematic revisions. These results provide a robust baseline for future research, long-term monitoring, and conservation planning, particularly for species of high conservation priority.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"1 1","pages":"77-87"},"PeriodicalIF":0.0,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://hnuejs.edu.vn/ns/article/download/1299/720","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CHARACTERIZATION OF A CHITOSAN/POLYANILINE FILM LOADED WITH LOVASTATIN 负载洛伐他汀的壳聚糖/聚苯胺膜的表征
Journal of Science Natural Science Pub Date : 2025-12-30 DOI: 10.18173/2354-1059.2025-0056
Bui Thanh Nga, Huynh Xuan Mai, Vu Quoc Manh, Nguyễn Đăng Đạt, Vu Thi Huong, Vũ Quốc Trung
{"title":"CHARACTERIZATION OF A CHITOSAN/POLYANILINE FILM LOADED WITH LOVASTATIN","authors":"Bui Thanh Nga, Huynh Xuan Mai, Vu Quoc Manh, Nguyễn Đăng Đạt, Vu Thi Huong, Vũ Quốc Trung","doi":"10.18173/2354-1059.2025-0056","DOIUrl":"https://doi.org/10.18173/2354-1059.2025-0056","url":null,"abstract":"This research aims to address these challenges by dispersing the drug within both a single biopolymer matrix (chitosan) and a dual biopolymer matrix (chitosan/polyaniline). The results indicated that, among the single-matrix chitosan/lovastatin (CsL) samples, the CsL10 CsL10 exhibits the most favorable drug-release behavior over 30 h, achieving a cumulative release of 96% in simulated intestinal fluid (pH 7.4) while providing effective drug protection of 10.5% in simulated gastric fluid (pH 2.0). These findings suggest a promising platform for further development. Building upon this direction, the study was extended to incorporate polyaniline to enable live-function monitoring and tissue stimulation. The results showed that the chitosan/polyaniline/lovastatin (CsPL) samples met the initial expectations, with the CsPL7 sample exhibiting drug release rates of 92.23% and 18.58% in the simulated intestinal and gastric environments, respectively. Analytical techniques, including FT-IR, FESEM, DSC, and UV-Vis, were employed to gain a deeper understanding of the interactions between the polymer components and the drug substance.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"1 1","pages":"78-87"},"PeriodicalIF":0.0,"publicationDate":"2025-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://hnuejs.edu.vn/ns/article/download/1187/652","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147884473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
DESIGN, SYNTHESIS, STRUCTURE AND ANTICANCER OF SOME HYDRAZIDE – HYDRAZONES CONTAINING BENZOTHIAZOLE 含苯并噻唑类肼腙的设计、合成、结构及抗癌作用
Journal of Science Natural Science Pub Date : 2024-10-30 DOI: 10.18173/2354-1059.2024-0037
Hoang Thi Thanh, Hieu Trung Nguyen, Trần Phương Thảo, Phan Duy Tang, Dương Quốc Hoàn
{"title":"DESIGN, SYNTHESIS, STRUCTURE AND ANTICANCER OF SOME HYDRAZIDE – HYDRAZONES CONTAINING BENZOTHIAZOLE","authors":"Hoang Thi Thanh, Hieu Trung Nguyen, Trần Phương Thảo, Phan Duy Tang, Dương Quốc Hoàn","doi":"10.18173/2354-1059.2024-0037","DOIUrl":"https://doi.org/10.18173/2354-1059.2024-0037","url":null,"abstract":"Four new hydrazide derivatives containing benzothiazole T4a, T4b, T4c and T4d were designed and synthesized successfully in a 4-step route in high yield. Structures of all samples were determined by 1H NMR, 13C NMR, HMBC, HSQC, and HRMS. All synthesized derivatives were tested for cytotoxic activity on KB cell line. The results indicated moderate activity with an IC50 range of 18 – 52 µg/mL. Among them, compound T4a exhibited the highest activity.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"1 1","pages":"78-86"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://hnuejs.edu.vn/ns/article/download/148/232","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147909994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Isolation and pathogenicity evaluation of Phytophthora colocasiae causing leaf blight disease in taro (Colocasia esculenta L. Schott) in some Northern provinces, Vietnam 越南北部部分省份芋头叶枯病疫霉的分离及致病性评价
Journal of Science Natural Science Pub Date : 2023-03-01 DOI: 10.18173/2354-1059.2023-0008
Thuy Le Thi, Na Nguyen Thi, Tuoi Le Thi, Viet Nguyen Xuan
{"title":"Isolation and pathogenicity evaluation of Phytophthora colocasiae causing leaf blight disease in taro (Colocasia esculenta L. Schott) in some Northern provinces, Vietnam","authors":"Thuy Le Thi, Na Nguyen Thi, Tuoi Le Thi, Viet Nguyen Xuan","doi":"10.18173/2354-1059.2023-0008","DOIUrl":"https://doi.org/10.18173/2354-1059.2023-0008","url":null,"abstract":"The study aimed to isolate and purify the pathogenic fungal strains isolated from blight disease taro leaves in some provinces of Northern Vietnam, from which to select the pathogenic strains belonging to Phytophthora colocasiae species, and to determine their toxicity on taro plants. From leaf tissue showing leaf blight collected from taro fields in 6 places in Bac Giang, Bac Ninh, Hanoi, and Hoa Binh provinces, 6 strains of the fungus were isolated. Based on the morphological characteristics as well as ITS rDNA sequences, it was confirmed that two of the six strains were Phytophthora colocasiae and named BN1 and SB, respectively. The sporangium of strain BN1 was ovoid and strain SB was a semi-papillary spherical shape. Both fungal strains grew well on CGA and PGA media and had equivalent toxicity through in vitro infection testing on 3 taro gene sources.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"59 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72938018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Using machine learning to identify influential factors and predict student academic performance in blended learning 使用机器学习识别影响因素并预测混合式学习中的学生学习成绩
Journal of Science Natural Science Pub Date : 2023-03-01 DOI: 10.18173/2354-1059.2023-0006
Hong Nguyen Thi, Long Tran Hai, Kien Do Trung
{"title":"Using machine learning to identify influential factors and predict student academic performance in blended learning","authors":"Hong Nguyen Thi, Long Tran Hai, Kien Do Trung","doi":"10.18173/2354-1059.2023-0006","DOIUrl":"https://doi.org/10.18173/2354-1059.2023-0006","url":null,"abstract":"This study aims to identify the factors that influence academic performance and use them to develop a predictive model for student academic achievement, in order to support the improvement of education quality. In previous studies, the selection and evaluation of factors were only conducted on online learning data. In this study, we propose using a selected set of attributes from experimental data collected both in face-to-face classes and on the online learning system at Hanoi National University of Education. To build the predictive model for academic performance, we employed two variable selection methods: one is to choose highly correlated variables, and the other is to use the Stepwise linear regression analysis. Furthermore, two machine learning algorithms, linear regression, and support vector regression were used to construct the predictive model. The experimental results show that the support vector regression model with a polynomial kernel function built from the Stepwise-selected variables is the most effective.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"81 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85481497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research assessment variation trend of precipitation in Binh Dinh province by Mann-Kendall test and Theil-Sen trend 利用Mann-Kendall检验和Theil-Sen趋势研究评价平定省降水变化趋势
Journal of Science Natural Science Pub Date : 2023-03-01 DOI: 10.18173/2354-1059.2023-0012
M. Tran Thi, Thuy Hoang Luu Thu, Vu Vuong Van, Huong Do Thi Van, Ha Dang Thi Ngan
{"title":"Research assessment variation trend of precipitation in Binh Dinh province by Mann-Kendall test and Theil-Sen trend","authors":"M. Tran Thi, Thuy Hoang Luu Thu, Vu Vuong Van, Huong Do Thi Van, Ha Dang Thi Ngan","doi":"10.18173/2354-1059.2023-0012","DOIUrl":"https://doi.org/10.18173/2354-1059.2023-0012","url":null,"abstract":"The paper aims to assess the changing trend of monthly rainfall and minimum monthly rainfall in Binh Dinh province by the Mann-Kendall test method and the Theil-Sen trend in the period 1981 - 2919. The results show that: With a statistical significance of 5%, rainfall tends to increase in January at Hoai Nhon and Binh Tuong stations with an increase of 1.2 - 1.3 mmyear and tends to increase in August at An Nhon station with an increase of 1.7 mmyear but tends to decrease in June at Quy Nhon station with a decrease of 1.6 mmyear. The total rainfall in the minimum months (from January to April) tends to increase at Hoai Nhon and Quy Nhon stations with an increase of 2.3 - 2.5 mmyear. Monthly rainfall and total monthly rainfall at the remaining stations do not satisfy the condition P-value ≤ 0.05, therefore, hypothesis H0 is accepted as a trendless series.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75120964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the elastic deformation of BCC interstitial alloy’s thin film BCC间隙合金薄膜弹性变形研究
Journal of Science Natural Science Pub Date : 2023-03-01 DOI: 10.18173/2354-1059.2023-0003
Hoc Nguyen Quang, Uyen Pham Phuong, Thanh Pham Duy, V. Le Hong
{"title":"Study on the elastic deformation of BCC interstitial alloy’s thin film","authors":"Hoc Nguyen Quang, Uyen Pham Phuong, Thanh Pham Duy, V. Le Hong","doi":"10.18173/2354-1059.2023-0003","DOIUrl":"https://doi.org/10.18173/2354-1059.2023-0003","url":null,"abstract":"The article presents the theory of elastic deformation and elastic wave propagation velocity of BCC binary interstitial alloy’s thin film based on the statistical moment method. Metal’s films and bulk interstitial alloys are specific cases of interstitial alloy’s films in this theory. The obtained theoretical results are applied to W and WSi films, where calculated results are compared with other calculations and experimental data.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74556225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Vu Gia - Thu Bon River bank erosion assessment (Quang Nam province) based on MIKE 21c model 基于MIKE 21c模型的广南省武家—图本河河岸侵蚀评价
Journal of Science Natural Science Pub Date : 2023-03-01 DOI: 10.18173/2354-1059.2023-0013
Khanh Uong Dinh, Son Hoang Thanh, Lan Vu Thi Thu, Tuan Bui Anh, Hanh Le Duc, Dang Vu Hai, Quang Trinh Xuan, Tuan Tong Phuc
{"title":"Vu Gia - Thu Bon River bank erosion assessment (Quang Nam province) based on MIKE 21c model","authors":"Khanh Uong Dinh, Son Hoang Thanh, Lan Vu Thi Thu, Tuan Bui Anh, Hanh Le Duc, Dang Vu Hai, Quang Trinh Xuan, Tuan Tong Phuc","doi":"10.18173/2354-1059.2023-0013","DOIUrl":"https://doi.org/10.18173/2354-1059.2023-0013","url":null,"abstract":"Riverbank erosion is increasingly causing negative impacts on the socio-economic development of Quang Nam province. The riverbank accretion-erosion is a natural phenomenon, reflecting the certain relationship between the flow and the channel’s characteristics through the sediment balance. Forecasting the evolution of erosion and accretion plays an important role in the sustainable development of the communities, agricultural sector as well as other sectors on both sides of the river in particular and the whole region in general. This paper presents the results of applying a set of MIKE models (MIKE11RR, HD, ST, and MIKE 21C) to simulate river bank evolution (erosion, accretion) under scenarios with 1%, 2%, 5%, and 10% flood frequencies. Comparison with the river’s bank changes in reality has shown that the simulation ability of the model is reliable enough, and suitable for the specific conditions of the Vu Gia - Thu Bon River basin. Calculation results have been mapped on the risk of riverbank erosion corresponding to flood frequency levels, and the model set also allows to extraction of accompanying information, which is the scientific basis for proposing adaptive solutions and damage reduction.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"48 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87953571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characteristics of the factors forming the landscape of Ba Be district, Bac Kan province 北坎八别地区景观形成因素特征
Journal of Science Natural Science Pub Date : 2023-03-01 DOI: 10.18173/2354-1059.2023-0014
Duong Dinh Hoang, Thanh Do Van, Hoan Kieu Van, Loi Duong Thi, Nhung To Thi Hong
{"title":"Characteristics of the factors forming the landscape of Ba Be district, Bac Kan province","authors":"Duong Dinh Hoang, Thanh Do Van, Hoan Kieu Van, Loi Duong Thi, Nhung To Thi Hong","doi":"10.18173/2354-1059.2023-0014","DOIUrl":"https://doi.org/10.18173/2354-1059.2023-0014","url":null,"abstract":"The objective of this paper is to analyze the characteristics of the factors that make up the landscape. These factors are the basis for the establishment of landscape maps and landscape assessment for planning as well as sustainable development of agriculture, forestry, and tourism in Ba Be district, Bac Kan province. This is a locality that has attracted great attention from domestic and foreign scientists because it holds the great value of natural resources. The task of establishing landscape maps and landscape classification systems based on factors such as geology, topography, climate, soil, vegetation, etc., is a scientific foundation for regulation. planning and sustainable development of agriculture, forestry, and tourism for this study area.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78607047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Controlled synthesis of low-dimensional MoS2TiO2 based core-shell structure for hydrogen evolution reaction 基于低维MoS2TiO2核壳结构的析氢控制合成
Journal of Science Natural Science Pub Date : 2023-03-01 DOI: 10.18173/2354-1059.2023-0002
Duc Nguyen Anh, Xuan Dieu Nguyen Thi
{"title":"Controlled synthesis of low-dimensional MoS2TiO2 based core-shell structure for hydrogen evolution reaction","authors":"Duc Nguyen Anh, Xuan Dieu Nguyen Thi","doi":"10.18173/2354-1059.2023-0002","DOIUrl":"https://doi.org/10.18173/2354-1059.2023-0002","url":null,"abstract":"In this report, we present the synthesis of low dimensional shell-core (2D1D) nanostructures, in which the TiO2 nanorods (TNRs) as the core are covered by a continuous monolayer MoS2 (1L-MoS2) as the shell. The obtain 1L-MoS2TNRs was directly grown on the conduct graphite foil without any transfer process, thus minimizing the charge transfer resistance from the electrode to the outer most working surface. For the first steps, the TiO2 seed layer was designed by the AF sputtering method, then the TNRs were grown by hydrothermal approach. Thereafter, the TNRs were conformally coated by a continuous monolayer MoS2 via a metal-organic chemical vapor deposition technique, resulting in 1L-MoS2TNRs nanomaterial. The structural, vibrational, and morphological characteristics demonstrated that the samples are high crystallinity. Interestingly, the 1L-MoS2TNRs showed highly efficient in electrochemical HER activity with the smallest onset overpotential of -140 mV vs RHE and a corresponding Tafel slope of 80 mV per decade, which were much lower compared to the pristine 1L-MoS2 and TNRs.","PeriodicalId":17007,"journal":{"name":"Journal of Science Natural Science","volume":"14 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83435154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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