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Geoscience Frontiers 2021年第2期12卷 857-876页

作者： Sk Ajim Ali Farhana Parvin Jana Vojteková Romulus Costache nguyen Thi Thuy Linh Quoc Bao Pham Matej Vojtek Ljubomir Gigović Ateeque Ahmad Mohammad Ali Ghorbani Department of Geography Faculty of ScienceAligarh Muslim University(AMU)AligarhUP 202002India Department of Geography and Regional Development Faculty of Natural SciencesConstantine the Philosopher University in NitraTrieda A.Hlinku 194901 NitraSlovakia Research Institute of the University of Bucharest 90-92 Sos.Panduri5th DistrictBucharest 050663Romania National Institute of Hydrology and Water Management București-Ploiești Road97E1st DistrictBucharest 013686Romania Thuyloi University 175 Tay SonDong DaHanoiViet Nam Institute of Research and Development Duy Tan UniversityDanang 550000Viet Nam Faculty of Environmental and Chemical Engineering Duy Tan UniversityDanang 550000Viet Nam Department of Geography University of Defence11000 BelgradeSerbia Sustainable Management of Natural Resources and Environment Research Group Faculty of Environment and Labour SafetyTon Duc Thang UniversityHo Chi Minh CityViet Nam

Hazards and disasters have always negative impacts on the way of *** is an overwhelming natural as well as man-made disaster that causes loss of natural resources and human properties throughout *** present study aimed to assess and compare the prediction efficiency of different models in landslide susceptibility in the Kysuca river basin,*** this regard,the fuzzy decision-making trial and evaluation laboratory combining with the analytic network process(FDEMATEL-ANP),Naïve Bayes(NB)classifier,and random forest(RF)classifier were ***,a landslide inventory map was produced with 2000 landslide and nonlandslide points by randomly dividedwith a ratio of 70%:30%for training and testing,*** geospatial database for assessing the landslide susceptibility was generated with the help of 16 landslide conditioning factors by allowing for topographical,hydrological,lithological,and land cover *** ReliefF methodwas considered for determining the significance of selected conditioning factors and inclusion in the model ***,the landslide susceptibility maps(LSMs)were generated using the FDEMATEL-ANP,Naïve Bayes(NB)classifier,and random forest(RF)classifier ***,the area under curve(AUC)and different arithmetic evaluation were used for validating and comparing the results and *** results revealed that random forest(RF)classifier is a promising and optimum model for landslide susceptibility in the study area with a very high value of area under curve(AUC=0.954),lower value of mean absolute error(MAE=0.1238)and root mean square error(RMSE=0.2555),and higher value of Kappa index(K=0.8435)and overall accuracy(OAC=92.2%).

关键词： Landslide susceptibility modeling Geographic information system Fuzzy DEMATEL Analytic network process Naïve Bayes classifier Random forest classifier

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从《妇人大全良方—胎教门》看中医胎教学

天津中医药 2012年第6期29卷 606-607页

作者：张越平阮氏水越南传统医药学院

中医胎教思想起源较早,最早见于《史记》。此后,又经历了历代医家的不断丰富和充实。至宋朝陈自明在《妇人大全良方》中专列"胎教门",标志着中医胎教思想系统的形成。胎教门被认为是对古代南宋以前胎教思想的高度总结,至今对优生优育仍... 详细信息

中医胎教思想起源较早,最早见于《史记》。此后,又经历了历代医家的不断丰富和充实。至宋朝陈自明在《妇人大全良方》中专列"胎教门",标志着中医胎教思想系统的形成。胎教门被认为是对古代南宋以前胎教思想的高度总结,至今对优生优育仍有一定的指导意义。文章就从胎教门认识中医的胎教学。

关键词：《妇人大全良方-胎教门》胎教中医胎教学

Improve the Competitiveness and Value of Rice Exports of the Mekong Delta Provinces

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Agricultural Sciences 2019年第6期10卷 707-719页

作者： nguyen Thi Tuong Vi Tianjun Liu College of Economics and Management Northwest A&F University Yangling China

Purpose: vietnam rice has long been a product of international stature. In the commodity export of vietnam, rice always plays as key agricultural commodities, with contributions billions of dollars each year in total export value. It not only contributes to the overall growth of the economy, but also gradually affirms vietnam’s position on the international rice market. According to General Statistics Office, in 2012, vietnam produced 43.7 million tonnes of rice and exported record 8.047 million tonnes of rice, contributing to the total export value of $3.689 million. However, it has not still been commensurate with the value and potential of rice from vietnam. In addition, the fact is that in recent years, although export rice increased sharply, bringing many records for vietnam, it had lower prices than other rice exporting countries (Thailand, India, Pakistan). So what is the cause and solution to enhance competitiveness and promote export of rice products in viet Nam? In the increasingly complex international context, besides socio-economic development, security and national defense, food security has become a matter of international concern. The article first discusses the competitiveness, the value of rice exports and the need to improve competitiveness and export value of rice in the Mekong Delta. Then, there are some solutions proposed to improve the competitiveness and export of rice in the Mekong Delta in the coming time.

关键词： Mekong Delta Rice Export Food Security The Competitiveness

Concentrations of Heavy Metals in Muscle with Relation to the Growth of Two Marine Fish Species

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Optical Trap 2D Array by Acoustic Modulation

生态毒理学报 2015年第3期 304-310页

作者： Le Quang Dung nguyen viet Linh nguyen Xuan Thanh nguyen Duc Cu Vu Van Tu Takaomi Arai Institute of Marine Environment and Resources Vietnam Academic of Science and Technology Institute of Oceanography and Environment Universiti Malaysia Terengganu Institute of Environmental Technology Vietnam Academic of Science and Technology

Heavy metal concentrations in muscle and their relation to thegrowth of two marine fish species,including tonguefish( Cynoglossus arel) and mullet( Mugil cephalus),were studied. The samples were collected in Bach Dang estuary andconcentrations of heavy metals( As,Cd,Co,Mn,Cu,Zn,Pb,and V) in muscle of the fisheswere determined. The result showed that the accumulated trend of heavy metal is different between fish species. The concentration of As,Zn,Mn,V,Cu,Pb,Co and Cd in tonguefish were 73. 7 ± 30. 6,22. 82 ± 4.87,3. 44 ± 2. 13,1. 61 ± 0. 15,0. 71 ± 0. 13,0. 45 ± 0. 24,0. 03 ± 0. 02 and 0. 02 ± 0. 02 mg·g-1,respectively. Meanwhile the concentration of Zn,As,V,Mn,Cu,Pb,Co and Cd in mullet were 83. 41 ±19. 68,9. 78 ± 1. 92,1. 36 ± 0. 54,1. 29 ± 0. 51,0. 65 ± 0. 12,0. 42 ± 0. 20,0. 06 ± 0. 03 and0. 03 ± 0. 01mg·g-1,respectively. Comparison of metal levels among thesespecies indicated that the concentrations of As and Mn in tonguefish were significantly higher than those in mullet,whereas Zn levels in mullet were found to be higher than that in tonguefish. There is no significant differences of Cd,Co,Cu,Pb and V levels in muscle between two species. Significant inversed relationshipsbetween concentration levels of metals and lengths of tonguefish were found for Mn,Cu and Zn,butnot for As,Cd,Pb,and V. There were no significant relationships between the heavy metal concentrations and the length of mullet. In general,decreasesof the heavy metal concentrations corresponded to the increases of fish body lengths,particularly for As,Co,Cu,Mn and V and the exception for Cd. Terefore reduced risks were associated with consuming biggermullet fish,and increased risks of As and Cd were associated with consuming bigger tonguefish in Bach Dang river mouth.

关键词： consuming Cynoglossus accumulated Species river length Marine estuary exception inorganic

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Journal of Physical Science and Application 2014年第7期4卷 420-425页

作者： Van Thinh nguyen Quang Quy Ho Physics Faculty Bac Lieu University Bac Lieu Vietnam Institute of Applied Physics NEWTECHPRO VAST 8 Hoang Quoc Viet Hanoi Vietnam

In this artilce a new optical trap 2D array by the acoustic modulation is proposed. Based on the ＂called＂ acoustic-elasticity of the fluid embedding trapped microparticle, the expression describing the refractive index induced by cross-interference of two perpendicular ultrasonic waves is approximately derived. By simulation, the 2D array of the Graded-refractive index lenses appeared in the fluid layer with certain strain-acoustic constant and thickness. The trapping capability of the plane-wave laser beam propagating through those lenses is shown out, and the appearance of the optical trap 2D array has been affirmed.

关键词： Optical trap array acoustic modulation microlens.

Recognition of earthquake-prone nodes,a case study for North vietnam (M≥5.0)

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Geodesy and Geodynamics 2012年第2期3卷 14-26页

作者： nguyen Huu Tuyen Ngo Thi Lu Institute of Geophysics Vietnam Academy of Science and Technology A8/18.Hoang Quoc VietHanoiVietnam Earth's System Physics(ESP) International Centre for Theory Physics(ICTP)Strada Costiera 1134151 TriesteItaly

Morphostructural nodes in North vietnam are delineated with the morphostructural zoning （MZ） method, and classified into seismogenic and non-seismogenic nodes. The compiled morphostructural map （ scale 1 ： 1000000） shows a three-level hierarchical structure of blocks, boundary zones, and nodes. The identified nodes are classified with the pattern-recognition algorithm CORA-3 into those that are prone to generate M≥5.0 earthquakes and those that are not. Some of the earthquake-prone nodes coincide with epicenters of M ≥ 5.0 earthquakes that have occurred ; others may coincide with such events in the future.

关键词： North vietnam morphostructural zoning pattern recognition seismogenic nodes

Simulation Nutrient Load under Climate Change Condition and Deforestation Scenarios in Phu Luong Watershed, viet Nam

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Journal of Environmental Science and Engineering(B) 2012年第2期1卷 199-207页

作者： Dinh Binh Phan Thanh Hai nguyen Faculty of Resources and Environmental Science Thai Nguyen University of Agriculture and Forestry Thai Nguyen City 280 Vietnam

The purpose of this paper is to apply ＂Soil and Water Assessment Tool （SWAT）＂ model to simulate the impacts of climate change and deforestation on nutrient （nitrogen and phosphorus） yield from Phu Luong watershed in Northern viet Nam. Among the three climate change scenarios B1, B2 and A2, which represented low, medium, and high levels of greenhouse gas emission respectively, were set up for viet Nam. The B2 scenario was selected for this study. Two land use scenarios （SI-2030 and S2-2050 which converted 4.43%. and 13.40% forest-mixed land into agricultural land, respectively） were formulated by combination with climatic change in SWAT simulation. In B2 climate change scenario, mean temperature increases 0.7 ℃ （2030） and 1.3 ℃（2050）; annual rainfall increases 2.1% （2030） and 3.80% （2050） with respect to baseline scenario. The results showed that monthly Nash-Sutcliffe coefficient of Efficiency （NSE） ranged from 0.81 to 0.96 and percent bias （PB1AS） ranged from -7.88 to 9.38. Additionally, SWAT simulation results also showed that climate change and deforestation caused significant percentage of changes in total N and P loads within Phu Luong watershed.

关键词： SWAT climate change deforestation nutrient yield.

SOME PRELIMINARY RESULTS FROM STUDY OF CRUSTAL DEFORMATION IN vietNAM

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大地测量与地球动力学 2003年第B12期23卷 114-118页

作者： Cao Dinh Trieu Le Van Dung nguyen Huu Tuyen Pham Nam Hung Institute of Geophysics Institute of GeophysicsInstitute of GeophysicsInstitute of Geophysics 18 Hoang Quoc Viet Road Cau GiayHanoi18 Hoang Quoc Viet Road Cau GiayHanoi18 Hoang Quoc Viet Road Cau GiayHanoi18 Hoang Quoc Viet Road Cau GiayHanoi

In this work, the authors present some results of strain monitoring within the territory of vietnam from 1984 to 2001. Data analysis shows that (1) the Phu Lien area is tectonically stable with low strain rate, 1×10\+\{-6\} /a; (2) the Hoa Binh area has indication of tectonic instability with relatively high strain rate of the earth crust: absolute value of the strain reaching 100×10\+\{-6\}, usual average strain amplitude of 60×10\+\{-6\}, whereas the monthly average strain intensity varies in a range from 30×10\+\{-6\} to 50×10\+\{-6\}; (3) there are clear indications of the strain state of the earth crust before occurrence of earthquakes of medium or higher magnitude. This is a very important indication in the research and short term prediction of earthquakes, especially for the areas with low seismic stability like the NW of vietnam.

关键词：越南表层变形应变测量系统操作原则应变数据因变与地震相对关系地震活动特性

High-performance carbon fiber/gold/copper composite wires for lightweight electrical cables

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Journal of Materials Science & Technology 2020年第7期42卷 46-53页

作者： Thang Q.Tran Jeremy Kong Yoong Lee Amutha Chinnappan nguyen Huu Loc Long T.Tran Dongxiao Ji W.A.D.M.Jayathilaka Vishnu Vijay Kumar Seeram Ramakrishna Department of Mechanical Engineering National University of Singapore9 Engineering Drive 1EA-07-05Singapore 117575Singapore Faculty of Mechanical Engineering Ho Chi Minh City University of TechnologyVNUHCM268 Ly Thuong KietDistrict 10Ho Chi Minh City 740400Viet Nam

In this study,we synthesized high-performance Carbon Fiber/Gold/Copper(CF/Au/Cu)composite wires by using a 2-step deposition method via sputtering and *** Au was sputtered on PANbased CFs as a pre-treatment,the wettability and surface reactivity of the CFs were improved,resulting in a homogeneous deposition of Cu on their *** different Cu electrodeposition time,the resulting CF/Au/Cu composite wires could possess a high strength of up to 3.27 GPa(~10 times stronger than copper wires)while their electrical conductivity could be as high as 4.4×10^5 S/cm(~75%of that for copper).More importantly,since the composite wires were lightweight(up to 70%lower than Cu mass density),they are a promising candidate to substitute conventional heavy metal wires in the future electrical applications.

关键词： Carbon fiber Copper composite wires Strength Electrical properties