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influence of different land-use types on selected soil properties related to soil fertility in A Luoi Dist.ict,thua thien Hue,Vietnam

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Soil Ecology Letters 2024年第1期6卷 131-140页

作者： Khoa Phuc Nguyen tan trong tran Huy Dinh Le Phuong thuy Nguyen hien thao t.i pham Dien thanh Nguyen Ngu Huu Nguyen University of Agriculture and Forestry Hue UniversityHue CityThua Thien Hue 52000Vietnam School of Biotechnology Tan Tao UniversityTan Duc ECityDuc HoaLong An850000Vietnam

Land use type affects the physicochemical properties of *** value of OM and tN is high in acacia *** acidity of soil is considered a serious constraint for *** cash crops are acacia,cassava,banana,rice and *** fertility is affected by land-use types and land management,which exacerbates soil erosion and various other forms of soil degradation in the mount.inous regions of *** study was conducted in A Luoi Dist.ict,thua thien Hue,Vietnam to identify the effects of land-use types on specific soil physicochemical characteristics related to soil *** physicochemical properties,such as organic matter(OM),total nitrogen(tN),total phosphorous(tP),and K+were significantly affected by land-use *** results showed that the soils were sandy in rice but clay loam for acacia and *** mean bulk density value of acacia soil was significantly greater than that of other *** were higher in the acacia soils than those in the rice,maize,and banana *** OM content was significantly higher in the acacia,cassava,and banana soils than those in the rice and maize *** mean of exchangeable K+in the rice soil was higher compared to those in other soils and was affected by land-use *** high exchangeable acidity content.in the soils was probably due to intensive ***,both land use type and management did not affect the CEC ***,the inappropriate land use caused the disturbance of soil physicochemical properties,indicating that the conditions of rice and maize soils are becoming worse than acacia ***,lowering the intensity of cultivation,adopting incorporated soil fertility management,and applying organic fertilizer should preserve the existing conditions and enhance soil properties.

关键词： Land-use types soil characteristics soil frility suitable crop Vietnam

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the impact of green finance,eco-innovation,renewable energy and carbon taxes on CO_(2) emissions in BRiCS count.ies:Evidence from CS ARDL estimation

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Geoscience Frontiers 2024年第4期15卷 449-458页

作者： Muhammad Sadiq Ka Yin Chau Nguyen tran thai Ha t.i thu hien Phan thanh Quang Ngo pham Quang Huy Carbon Economy Research Center Fuzhou University of International Studies and TradeFuzhou 350202China School of Accounting and Finance Faculty of Business and LawTaylor’s UniversityMalaysia Faculty of Business City University of MacaoTaipaMacaoChina Faculty of Finance and Banking Van Lang UniversityHo Chi Minh CityVietnam Zhejiang Shuren University No.8 Shuren streetHangzhou 310015China School of Government University of Economics Ho Chi Minh City(UEH)Ho Chi Minh City 72407Viet Nam Research Group Public Governance and Developmental issues University of Economics Ho Chi Minh City(UEH)Ho Chi Minh City 72407Viet Nam Ho Chi Minh City University of Economics and Finance(UEF) Ho Chi Minh CityVietnam University of Economics and Human Sciences in Warsaw WarsawPoland

A sharp increase in economic and human development has multiplied the carbon intensity due to which there is a significant need of effective strategies in order to curb carbon ***,the present study aims to examine the effective of green finance,eco-innovation,renewable energy output(REO),renewable energy consumption(REC),and carbon taxes on carbon dioxide(CO_(2))emissions in BRiCS count.ies in the time of ***-sectional autoregressive dist.ibuted lag(CS ARDL)is used to test the connection among the *** estimations of CS-ARDL approach validates the effectiveness of green finance,eco-innovation,REO,REC,carbon taxes,and indust.ialization as the relationship of these factors with carbon emissions is negative in nature in BRiCS *** on the evidences,the study recommends the formulation of environmentally friendly practices and advancement.in green finances to mitigate carbon emissions.

关键词： Green finance Eco-innovation Renewable energyoutput Carbon taxes Environmental degradation CO_(2)emissions

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Predicting 3D Radiotherapy Dose-Volume Based on Deep Learning

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intelligent Automation & Soft Computing 2024年第2期39卷 319-335页

作者： Do Nang toan Lam thanh hien Ha Manh toan Nguyen trong Vinh pham trung Hieu institute of information technology Vietnam Academy of Science and TechnologyHanoi10072Vietnam Faculty of information technology Lac Hong UniversityBien HoaDong Nai76120Vietnam

Cancer is one of the most dangerous diseaseswith *** of the principal treatments is radiotherapy by using radiation beams to destroy cancer cells and t.is workflow requires a lot of experience and skill from doctors and *** our study,we focused on the 3D dose prediction problem in radiotherapy by applying the deeplearning approach to computed tomography(Ct.images of cancer *** image data has more complex characteristics than normal image data,and t.is research aims to explore the effectiveness of data preprocessing and augmentation in the context of the 3D dose prediction *** proposed four strategies to clarify our hypothesis in different aspects of applying data preprocessing and *** strategies,we trained our custom convolutional neural network model which has a structure inspired by the U-net,and residual blocks were also applied to the *** output of the network is added with a rectified linear unit(Re-Lu)function for each pixel to ensure there are no negative values,which are absurd with radiation *** experiments were conducted on the dataset of the Open Knowledge-Based Planning Challenge which was collected from head and neck cancer patients treatedwith radiation *** results of four strategies showthat our hypothesis is rational by evaluating met.ics in terms of the Dose-score and the Dose-volume histogram score(DVH-score).in the best training cases,the Dose-score is 3.08 and the DVH-score is *** addition,we also conducted a comparison with the results of another study in the same context of using the loss function.

关键词： Ct.image 3D dose prediction data preprocessing augmentation

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Evaluation of five gridded rainfall datasets in simulating streamflow in the upper Dong Nai river basin,Vietnam

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international Journal of Digital Earth 2019年第3期12卷 311-327页

作者： pham t.i thao Nhi Dao Nguyen Khoi Nguyen Xuan Hoan institute of Research and Development Duy Tan UniversityDa NangVietnam institute for Computational Science and technology Tan Hiep Chanh WardDistrict 12Ho Chi Minh CityVietnam Faculty of Environment University of ScienceVietnam National University Ho Chi Minh City227 Nguyen Van Cu StreetDistrict 5Ho Chi Minh CityVietnam Ho Chi Minh City University of Food industry 140 Le Trong Tan StreetTan Phu DistrictHo Chi Minh CityVietnam

Rainfall data with an appropriate spatial resolution is a key input to hydrological ***,networks of rain gauges are often sparsely and unevenly dist.ibuted in large catchments,especially in developing ***-resolution rainfall datasets,such as the Asian Precipitation Highly Resolved Observational Data integration towards Evaluation of Water Resources(APHRODitE),the Climate Forecast System Reanalysis(CFSR),the Climatic Research Unit time Series(CRUtS),the Global Precipitation Climatology Centre(GPCC)and the tropical Rainfall Measuring Mission(tRMM),have become available to overcome such *** objective of t.is study was to evaluate the impacts of four land-based rainfall products(APHRODitE,CFSR,CRU-tS,and GPCC)and a satellite-based rainfall product(tRMM)on streamflow of the upper catchment of t.i An reservoir in Vietnam using the Hydrological Modeling System(HEC-HMS).in addition,the available rain gauges data were used for comparison *** indicates that the tRMM and GPCC data show their best match to rain gauges data in simulating the streamflow in the period 1999–***,the results indicate that the tRMM and GPCC data could be alternative solutions.

关键词： APHRODitE CFSR CRU-tS GPCC tRMM rainfall streamflow HEC-HMS model

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Morphology and kinematics of the gas envelope of the Mira binary W Aquilae

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Research in Astronomy and Astrophysics 2016年第7期16卷 47-54页

作者： Do t.i Hoai pham tuyet Nhung pham Ngoc Diep Nguyen t.i Phuong pham tuan-Anh Nguyen t.i thao Pierre Darriulat Department of Astrophysics Vietnam National Satellite CenterVAST

We analyse ALMA observations of the12CO（3-2） emission of the circumstellar envelope（CSE）of the Mira variable binary star W Aql. these provide, for the first time, spatially resolved Doppler velocity spectra of the CSE up to angular distances to the central star ofy nature of the observations（only five minutes in each of～5′′（meaning some 2000 AU）. the explorator two different configurations） does not allow for a det.iled modelling of the properties of the CSE but provides important qualitative information on its morphology and kinematics. Emission is found to be enhanced along an axis moving from east/west to north-east/south-west when the angular distance from the central star projected on the plane of the sky increases from zero to four arcseconds. in parallel, the Doppler velocity dist.ibution displays asymmetry along an axis moving from east/west to north-west/south-east. the results are discussed in the context of earlier observations, in particular of the dust morphology.

关键词： stars AGB and post-AGB (stars ) circumstellar matter stars individual(W Aql) stars mass-loss radio lines stars

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^(12)CO emission from the Red Rectangle

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Research in Astronomy and Astrophysics 2015年第12期15卷 2213-2228页

作者： pham tuan Anh pham Ngoc Diep Do t.i Hoai pham tuyet Nhung Nguyen t.i Phuong Nguyen t.i thao Pierre Darriulat Department of Astrophysics Vietnam National Satellite CenterVAST

Observations of an unprecedented quality made by ALMA on the Red Rectangle of CO（3-2） and CO（6-5） emissions are analysed jointly with the aim of obt.ining as simple as possible a description of the gas morphology and kinematics. Evidence is found for polar conical outflows and for a broad equatorial torus in rotation and expansion. Simple models of both are proposed. Comparing CO（6-5） and CO（3-2） emissions provides evidence for a strong temperature enhancement over the polar outflows. Continuum emission （dust） is seen to be enhanced in the equatorial region. Observed asymmet.ies are briefly discussed.

关键词： stars: AGB and post-AGB -- circumstellar matter -- radio-lines: stars-- planetary nebulae: individual (Red Rectangle)

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Morphology and kinematics of the gas envelope of the variable AGB star π^1 Gruis

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Research in Astronomy and Astrophysics 2016年第7期16卷 97-104页

作者： pham tuyet Nhung Do t.i Hoai pham Ngoc Diep Nguyen t.i Phuong Nguyen t.i thao pham tuan Anh Pierre Darriulat Department of Astrophysics Vietnam National Satellite CenterVAST

Observations of the ^12CO（3–2） emission from the circumstellar envelope（CSE） of the variable star π1Gru using the compact array of the ALMA observatory have been recently made accessible to the public. An analysis of the morphology and kinematics of the CSE is presented with a result very similar to that obt.ined earlier for ^12CO（2–1） emission using the Submillimeter Array. A quantitative comparison is made using their flared disk model. A new model is presented that provides a significantly better description of the data, using radial winds and smooth evolutions of the radio emission and wind velocity from the stellar equator to the poles.

关键词： stars AGB and post-AGB circumstellar matter star individual(π1Gru) stars massloss radio lines stars

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A tree-based intelligence ensemble approach for spatial prediction of potential groundwater

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international Journal of Digital Earth 2020年第12期13卷 1408-1429页

作者： Mohammadtaghi Avand Saeid Janizadeh Dieu tien Bui Viet Hoa pham Phuong thao t.Ngo Viet-Ha Nhu Faculty of Natural Resources and Marine Sciences Tarbiat Modares UniversityTehranIran Geographic information Science Research Group Ton Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Environment and Labour Safety Ton Duc Thang UniversityHo Chi Minh CityVietnam Ho Chi Minh City institute of Resources Geography Vietnam Academy of Science and TechnologyHo Chi Minh CityVietnam institute of Research and Development Duy Tan UniversityDa NangVietnam Department of Geological-Geotechnical Engineering Hanoi University of Mining and GeologyHanoiVietnam

the objective of t.is research is to propose and confirm a new machine learning approach of Best-First tree(BFtree),AdaBoost(AB),MultiBoosting(MB),and Bagging(Bag)ensembles for potential groundwater mapping and assessing role of influencing *** Yasuj-Dena area(iran)is selected as a case *** t.is regard,a Yasuj-Dena database was established with 362 springs locations and 12 groundwater-influencing factors(slope,aspect,elevation,stream power index(SPi),length of slope(LS),topographic wetness index(t.i),topographic position index(t.i),land use,lithology,distance from fault,distance from river,and rainfall).the database was employed to train and validate the proposed groundwater *** area under the curve(AUC)and statistical met.ics were employed to check and confirm the quality of the *** result shows that the BFtree-Bag model(AUC=0.810,kappa=0.495)has the highest prediction performance,followed by the BFtree-MB model(AUC=0.785,kappa=0.477),and the BFtree-MB model(AUC=0.745,kappa=0.422).Compared to the benchmark of Random Forests,the BFtree-Bag model performs better;therefore,we conclude that the BFtree-Bag is a new tool should be used for modeling of groundwater potential.

关键词： Environmental modeling groundwater potential GiS ensemble model decision tree

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Gravitationally lensed extended sources: the case of QSO RXJ0911

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Research in Astronomy and Astrophysics 2013年第7期13卷 803-814页

作者： Do t.i Hoai pham tuyet Nhung pham tuan Anh Frederic Boone Pierre Darriulat pham Ngoc Diep pham Ngoc Dong Nguyen Van Hiep Nguyen t.i thao VAtLY INST179Hoang Quoc VietCau GiayHanoiVietnam iRAP 14avenue Edouard BelinF31400 ToulouseFrance

After a brief reminder of the mechanism of gravitational lensing of ex- tended sources, the particular case of the host galaxy of QSO RXJ0911, a high red-shift （z - 2.8） quadruply imaged quasar, is explored. the non linearity of the problem, together with the proximity of the source to a cusp of the lens inner caustic, has impor-tant consequences on the dependence of the image appearance on the size and shape of the source. their expected main features and their interpretation in terms of source extension and shape are investigated in a spirit of simplicity and in preparation for the analysis of high sensitivity and spatial resolution images that will soon be wit.in reach with the completion of the Atacama Large Millimeter/submillimeter Array （ALMA）. in particular, the information on source size carded by relative image brightness is dis-cussed. Extension of the results to other types of quadruply imaged quasars is briefly considered.

关键词： gravitational lensing - galaxies: high-redshift

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Patterns of hepatitis B virus exposure and associated predictors in Vietnam: A crosssectional study

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Asian Pacific Journal of tropical Medicine 2020年第12期13卷 535-541页

作者： Minh C.Duong Phuc V.D.Le Oanh N.K.pham hien D.t.pham toan B.Nguyen Hai t.Phan School of Public Health and Community Medicine University of New South WalesSydneyNew South WalesAustralia MEDiC Medical Center Ho Chi Minh CityVietnam Hospital for tropical Diseases Ho Chi Minh CityVietnam pham Ngoc thach University of Medicine Ho Chi Minh CityVietnam

Objective:to examine the magnitude of isolated anti-HBc and other HBV serological patterns and associated predictors among adults seeking general health check-up at a large health center in ***:All 564 outpatients seeking general health checkup between January 2016 and December 2016 were asked to undertake HBV surface antigen,surface antibody,igG and igM core antibody(anti-HBc total),platelet counts,and liver function *** administered questionnaire was used to collect.information regarding demography,in-house sources of infection,lifestyle,health condition and treatment,and HBV ***:Male gender(P=0.043),age(P=0.000),living in urban areas(P=0.040),HBV vaccination status(P=0.033),and ALt(P=0.040) were associated with isolated *** infection was associated with HBV vaccination status(P=0.001),ALt levels(P=0.010),ASt levels(P=0.020),and platelet counts(P=0.007).Past/resolved HBV infection was associated with ASt levels(P=0.005),ALt levels(P=0.014),and age(P=0.000).Conclusions:isolated anti-HBc is quite *** of isolated anti-HBc include male gender,living in rural areas,and HBV *** prevalence of isolated anti-HBc also increases with *** timely detect occult HBV infection and prevent transmission,anti-HBc testing should be included in the health check-up for high risk individuals and screening program where HBV nucleic acid test.is not *** prevent transmission,clinicians need to pay more attention on those who are at risk of having isolated anti-HBc and closely follow-up patients with isolated anti-HBc and educate them about the prevention of HBV infection.

关键词： prevention seeking Vietnam

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