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21篇 您的检索式:作者名="Nguyen Tran Hung"
    题名 作者 年代 出处 被引量
1Antioxidant activity and principles of Vietnam bitter tea Ilex kudingcha显示文摘Phuong Thien Thuong Nguyen Duy Su Tran Minh Ngoc Tran Manh Hung Nguyen Hai Dang Nguyen Duy Thuan KiHwan Bae Won Keun Oh 2008Food Chemistry2008,,1:2
2Upconversion luminescence of Gd2O3:Er3+and Gd2O3:Er3+/silica nanophosphors fabricated by EDTA combustion method显示文摘Gd2O3:Er^3+nanophosphors were fabricated by the combustion method in presence of Na2 ethylene diamine tetra acetic acid(EDTA-Na2)as fuel at not high temperature(≤350℃)within a very short time of 5 min.The added concentration of Er^3+ions in Gd2O3 matrix was changed from 0.5 mol%to 5.0 mol%.The X-ray diffraction pattern of samples indicates the monoclinic structure of Gd2O3:Er^3+.The morphology and chemical composition analysis of the Gd2O3:Er^3+samples are characterized by a field emission scanning electron microscope(FESEM)and a Fourier-transform infrared spectrometer(FTIR).The photoluminescence(PL),photo luminescence excitation(PLE)and upconversion(UC)at room temperature of the prepared materials with different concentrations of Er^3+were investigated.The PL of Gd2O3:Er^3+nanomaterials are shown in visible at 545,594,623,648,688 nm under excitation at 275 nm.The emission bands from transitions of Er^3+from 2P3/2 to 4F9/2 are observed,UC luminescent spectra of the Gd2O3:Er^3+/silica nanocomposites under 976 nm excitation show the bands at 548 and 670 nm.The influence of excitation power at 980 nm for transitions were measured and calculated.The results indicate that the upconversion process of Gd2O3:Er^3+/silica is two photons absorption mechanism.The low temperature dependence of UC luminescent intensities of the main bands of Gd2O3:Er^3+was investigated towards development of a nanotemperature sensor in the range of 10-300 K.Le Quoc Minh Tran Kim Anh Nguyen Duy Hung Pham Thi Minh Chau Nguyen Thi Quy Hai Ho Van Tuyen Vu Thi Thai Ha Vu Duc Tu Wieslaw Strek 2019Journal of Rare Earths2019,37,11:2
3Ecoregional variations of aboveground biomass and stand structure in evergreen broadleaved forests显示文摘Biotic and abiotic factors control aboveground biomass(AGB)and the structure of forest ecosystems.This study analyses the variation of AGB and stand structure of evergreen broadleaved forests among six ecoregions of Vietnam.A data set of 1731-ha plots from 52 locations in undisturbed old-growth forests was developed.The results indicate that basal area and AGB are closely correlated with annual precipitation,but not with annual temperature,evaporation or hours of sunshine.Basal area and AGB are positively correlated with trees>30 cm DBH.Most areas surveyed(52.6%)in these old-growth forests had AGB of 100–200 Mg ha^-1;5.2%had AGB of 400–500 Mg ha^-1,and 0.6%had AGB of>800 Mg ha^-1.Seventy percent of the areas surveyed had stand densities of 300–600 ind.ha^-1,and 64%had basal areas of 20–40 m^2 ha^-1.Precipitation is an important factor influencing the AGB of old-growth,evergreen broadleaved forests in Vietnam.Disturbances causing the loss of large-diameter trees(e.g.,>100 cm DBH)affects AGB but may not seriously affect stand density.Tran Van Do Mamoru Yamamoto Osamu Kozan Vo Dai Hai Phung Dinh Trung Nguyen Toan Thang Lai Thanh Hai Vu Thanh Nam Trieu Thai Hung Hoang Van Thang Tran Duc Manh Cao Chi Khiem Vu Tien Lam Nguyen Quang Hung Tran Hoang Quy Pham Quang Tuyen Trinh Ngoc Bon Nguyen Thi Thu Phuong Ninh Viet Khuong Nguyen Van Tuan Dang Thi Hai Ha Tran Hai Long Dang Van Thuyet Dang Thinh Trieu Nguyen Van Thinh Tran Anh Hai Duong Quang Trung Nguyen Van Bich Dinh Hai Dang Pham Tien Dung Nguyen Huy Hoang Le Thi Hanh Phan Minh Quang Nguyen Thi Thuy Huong Hoang Thanh Son Nguyen Thanh Son Nguyen Thi Van Anh Nguyen Thi Hoai Anh Pham Dinh Sam Hoang Thi Nhung Hoang Van Thanh Nguyen Huu Thinh Tran Hong Van Ho Trung Luong Bui Kieu Hung 2020Journal of Forestry Research2020,31,5:1
4Clinical, epidemiological and virological features of dengue virus infections in vietnamese patients presenting to primary care facilities with acute undifferentiated fever显示文摘Khoa T.D. Thai Hoang Lan Phuong Tran Thi Thanh Nga Phan Trong Giao Le Quoc Hung Nguyen Van Nam Tran Quang Binh Cameron Simmons Jeremy Farrar Tran Thinh Hien H. Rogier van Doorn Menno D. de Jong Peter J. de Vries 2010Journal of Infection2010,,:1
5Association between the Phenotypes and Genotypes of Antimicrobial Resistance in Haemophilus parasuis Isolates from Swine in Quang Binh and Thua Thien Hue Provinces, Vietnam显示文摘Haemophilus parasuis (H. parasuis) is one of the bacterial pathogens of great concern as it causes huge economic losses to the swine industry worldwide. One of the reasons why the control of H. parasuis has failed is the increase in antimicrobial resistance (AMR). The country of Vietnam has the second-largest pig production in Asia. However, there is still a lack of data about the AMR prevalence of H. parasuis in Vietnam.The purpose of this study is to investigate the prevalence of AMR and analyze the association between AMR and AMR genes (ARGs). The H. parasuis strains used in this research were isolated from swine in the Quang Binh and Thua Thien Hue Provinces, Central Vietnam, as reported in our previous study. All of the strains were tested for AMR against 25 antibacterial agents using the broth microdilution method and for the presence of ARGs using the polymerase chain reaction (PCR) method. The tested strains were shown to have a high frequency of resistance to trimethoprim/sulfamethoxazole (94.6%), followed by resistance to colistin, chloramphenicol, gentamicin, penicillin, lincomycin, and amoxicillin. The most prevalent ARGs in these strains were blaTEM-1 (94.6%), int (76.8%), gyrA (58.9%), and rmtD (50.0%). Cefuroxime, chloramphenicol, and tobramycin resistances were strongly correlated with the presence of the ARGs blaROB-1 (odds ratio (OR) = 26.3, 95% confidence interval (CI) 2.7–255.7, p = 0.002), catl (OR = 25.1, 95% CI 2.4–258.9, p = 0.004), and strB (OR = 23.5, 95% CI 2.6–212.6, p = 0.001), respectively.This study reveals for the first time the current situation of H. parasuis AMR in Central Vietnam, which is helpful for the clinical control of this disease, as well as for the development of policies and clinical practice guidelines to reduce AMR in swine production in Central Vietnam.Chao Nguyen Van Lijun Zhang Tam Vu Thi Thanh Hung Pham Hoang Son Tuan Tran Ngoc Qi Huang Rui Zhou 2020Engineering2020,6,1:1
6Study of vertically ascending flight of a hawkmoth model显示文摘This paper provides insight into the wing kinematics,the power requirement and the dynamic stability characteristics of a hawkmoth model in vertically ascending flight.The wing kinematics of the hawkmoth model is obtained based on the minimum required power assumption.The optimization process is conducted using genetic and simplex algorithms that are coupled with an artificial neural network to rapidly predict the aerodynamic force and required power.The training data for the neural network are generated from an unsteady vortex-lattice method.Compared to hover,the results in this study show the larger flapping frequency and the smaller rotation amplitude of the hawkmoth wing kinematics in ascending flight.Additionally,more power is required when the ascending speed increases.While conducting a dynamic modal analysis based on a cycle-average approach,the certain effect of the ascending speed on the modal structures of the hawkmoth model was observed.Anh Tuan Nguyen Vu Dan Thanh Le The Hung Tran V.N.Due Van Binh Phung 2020Acta Mechanica Sinica2020,36,5:1
7Analysis of cracked plates and shells using 'metis' finite element model显示文摘 2004Finite Elements in Analysis and Design2004,40,8:1
8Triterpenoids from Camellia japonica and Their Cytotoxic Activity 显示文摘Nguyen Thi Phuong THAO Tran Manh HUNG Mi Kyoung LEE 2010Chem Pharm Bull2010,58,1:1
9Adsorption of lead from water by thiol-functiona- lized SBA-15 silicas显示文摘Phuong Tran Thi Thu Tam Truong Thanh Hung Nguyen Phi 2010J Mater Sci2010,45,:1
10Corrosion behavior of TiN,TiA1N,TiA1SiN- coated 316L stainless steel in simulated proton exchange membrane fuel cell environment显示文摘Nguyen Dang Nam Mahesh Vaka Nguyen Tran Hung 2014Journal of Power Sources2014,268,:1
11Effect of de- branching and storage condition on crystallinity and func- tional properties of cassava and potato starches显示文摘Hung PV Nguyen T L P Tran T V V 2012STARCH-STARKE2012,64,12:1
12Analysis of cracked plates and shells using'metis' finite element model 显示文摘Nguyen Dang Hung Tran Thanh Ngoc 2004Finite Elements in Analysis and Design2004,,40:1
13Influence of Input Factors on Surface Roughness and Material Removal Speed when Wire-EDM a Hardened SKD11 Steel Curve Profile显示文摘The goal of this research is to identify the best set of process machining parameters for wire-EDM(Electrical Discharge Machining)cutting of hardened SKD11 steel when machining a curve profile.The multi-objective function includes reducing surface roughness and increasing MRR(Material Removal Rate).The optimization process is prepared by using Taguchi method coupled Grey Relational Analysis.The obtained results revealed that Toff has the greatest influence on the average grey value(48.30%),followed by the influence of WF(Wire Feed,15.99%),VM(Cutting Voltage,9.33%),SV(Server Voltage,5.05%),Ton(Pulse on Time,1.81%),while SPD(Cutting Speed)has a negligible effect(0.89%).Moreover,using the optimal set of machining parameters generates in surface roughness of 1.25399mm and MRR of 26.5562 mm^(2)/min.The verification experiment and Anderson-Darling method demonstrate the validity of the proposed model,which can be utilized for estimating surface roughness and MRR.Tran Quoc Hung Nguyen Van Trang 2023Journal of Environmental Science and Engineering(B)2023,12,5:0
14Simultaneous Quantitative Analysis of Five Components in Angelica sinensis and Angelica acutiloba Acclimatized Growing in Vietnam by High-Performance Liquid Chromatography with Photodiode Array Detector显示文摘Background:Chinese Danggui(Angelica sinensis)and Japanese Danggui(Angelica acutiloba)are evaluated as the same in using and critical of quality control in Vietnamese Pharmacopoeia.In Vietnam,Japanese Danggui were acclimatized and cultivated in several regions in recent years.Despite the huge climatic difference between Vietnam and Japan,Japanese Danggui grows very well in Vietnam.However,there are no studies to assess the overall quality of this medicinal herbs.Aims and Objectives:The aim of this study is to develop a method to identify and assay simultaneously 5 component compounds of these crude herbs:chlorogenic acid,ferulic acid,scopoletin,xanthotoxin and ligustilide by high-performance liquid chromatography with photodiode array detector(HPLC-PDA).Materials and Methods:The procedure was optimized by using column Phenomenex Gemini 5μm PR C18,15 x 4,6 mm with the detection wavelength set at 321 nm for detector PDA and mobile phase was composed of(A)ACN and(B)aqueous solution 1%of acid acetic using a gradient elution.Analytes were performed at 30°C with a flow rate of 1.0 mL/min.Results:The developped method were fully validated for linearity,accuracy,recovery and met the validation requirements,proved practical applicability for the quality control of these herbs and related products.Conclusion:The method was successfully applied to the quantification of five markers simultaneously from collected samples.Thi Minh Tam Pham Thi Thu Cuc Le Van Thanh Nguyen Viet Hung Tran 2021World Journal of Traditional Chinese Medicine2021,7,1:0
15对某一水下航行器集成式周期变距螺旋桨的试验研究(英文)显示文摘A series of experimental studies of the innovative propulsor named Collective and Cyclic Pitch Propeller(CCPP) applied to an underwater vehicle were designed and performed at the Australian Maritime College, University of Tasmania. The bollard pull and captive model tests were conducted to investigate the characteristics of CCPP and to examine the effect of different parameter settings to its performance. The results show that the CCPP is able to generate effective manoeuvring forces in various operational condition. In addition, the obtained results in the form of force coefficients provide a useful empirical model for the simulation and control of an underwater vehicle equipped with this propulsor.Minh Tran Jonathan Binns Shuhong Chai Alex Forrest Hung Nguyen 2018Journal of Marine Science and Application2018,17,4:0
16In vivo anticancer activity of maesopsin 4—O— β—glucoside isolated from leaves of Artocarpus tonkinensis A.Chev.Ex Gagnep显示文摘Objective:To investigate the antitumor effect of maesopsin 4-O-β-glucoside(TAT2) isolated from the leaves of Artocarpus tonkinensis(A.tonkinensis) A.Chev.ex Gagnep.Methods:The antitumor activity of TAT2 was evaluated in Lewis lung carcinoma(LLC) tumor-bearing mice.BALB/c mice had tumors induced by implantation with 2× 10~6 LLC cells into the subcutaneous right posterior Hank.Tumor-bearing mice were treated orally with a range of doses of TAT2 and a standard drug,doxorubicin.Animals were observed for tumor growth and mortality rate.Blood was collected to determine hematological and biochemical parameters.Results TAT2 was isolated from an ethanolic extract of 1.tonkinensis leaves.Its structure was determined by MS and NMR spectroscopy,and identified as TAT2.The compound did not show acute toxicity at the highest dose tested(2 OIK) mg/kg body weight).TAT2 exhibited antitumor activity by decreasing tumor growth,increasing the survival rale,and ameliorating some hematological and biochemical parameters at doses of 100 and 200 mg/kg body weight(P<0.05).Conclusions:These results indicate that TAT2 possesses clear antitumor activity.Due to its bioavailability and low toxicity,and the fact that it could be isolated in a large scale from A.tonkinensis leaves,the compound shows promise as a potential anticancer drug.Trinh Thi Thuy Dao Duc Thien Tran Quang Hung Nguyen Thanh Tam Nguyen Thi Hoang Anh Nguyen Thi Nga Nguyen Thi Cuc Le Phuong Mai Tran Van Sung Domenico V.Delfino Do Thi Thao 2016Asian Pacific Journal of Tropical Medicine2016,9,4:0
17唤醒空间!城市生态阳台,河内,越南显示文摘我们是来自越南及意大利的青年建筑师团队,在越南开设了一家建筑工作室。2016年10月,我们在河内租赁了一个办公空间。在了解河内市周边环境后,我们发现,可能由于市区里的灰尘、噪音和防盗等问题,这里有很多阳台都未被实际使用。市民几乎不与外部环境或附近的邻居互动。我们把那些阳台称为沉寂空间。 An Viet Dung Roberto Iannetti Pham Ngoc Linh An Thanh Nhan Nelly Agliardi Quach Hai Linh Bui Huu Tung Le Van Tung Do Thi Hien Nguyen Phi Hung Due Chu Bang Thanh 天妮(译) Nguyen Thai Thach(摄影) Quang Tran(摄影) 2020世界建筑2020,,10:0
18Isolation and Identification of Two Flavonoid Compounds from Acclimatized Angelica acutiloba Kitagawa Growing in Vietnam显示文摘Traditional Vietnamese Medicine has its own development based on the local endemic herbs,but it also inherits from Traditional Chinese Medicine using Chinese herbal medicines.Throughout the history of cultural exchange between two countries,the adoption of Chinese Danggui,Angelica sinensis(Oliv.)Diels.,has been made by Vietnamese traditional medicine practitioners for a long time.However,the acclimatization has never been successful.Japanese Danggui,or Angelica acutiloba Kitagawa,is recently being acclimatized and cultivated in several Vietnamese regions.Despite the huge climate change between the two countries,the herb adapted exquisitely well to the humid tropical climate.However,so far,there are no studies that have evaluated the effect of acclimatization on the overall quality of this medicinal herb.The aim of our study is screening secondary metabolites of this acclimatized herb for new natural compound(s),if any.The analysis of flavonoid fraction from this herb led to the identification of two known compounds which previously have not been isolated from this species elsewhere.This detection showed that the herb has reacted to the new environment.Thi Minh Tam Pham Thi Thu Cuc Le Viet Hung Tran Van Thanh Nguyen 2022World Journal of Traditional Chinese Medicine2022,8,3:0
19Handover in Wireless Mesh Network显示文摘Tran Cong Hung Bui Tran Thanh Thao Nguyen Thien Binh 2010通讯和计算机(中英文版)2010,7,8:0
20越南东北部Cat Ba岛泥盆系-石炭系过渡层的初探(英文)显示文摘The Pho Han Formation is exposed on southern Cat Ba Island,Hai Phong Province in northeastern Vietnam,and intercalates the Devonian and Carboniferous(D-C) boundary(Ta and Doan,2007;Komatsu et al.,2012).The D-C boundary section consists mainly of limestone beds,Toshifumi KOMATSU Reishi TAKASHIMA TA Hoa PHUONG Tran Huyen DANG Duc Phong NGUYEN Huu Hung NGUYEN Satoru KATO Kento HIRATA Takumi MAEKAWA 2012地球学报2012,33,S1:0
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