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Acta Mathematica Scientia 2023年第1期43卷 184-204页

作者： Duong Viet thONG Vu tien DUNG Division of Applied Mathematics Thu Dau Mot UniversityBinh Duong ProvinceVietnam Department of Mathematics University of ScienceVietnam National University334 Nguyen TraiThanh XuanHanoiVietnam

In this paper,we investigate pseudomonotone and Lipschitz continuous variational inequalities in real Hilbert *** solving this problem,we propose a new method that combines the advantages of the subgradient extragradient method and the projection contraction *** very recent papers have considered different inertial algorithms which allowed the inertial factor is chosen in[0;1].the purpose of this work is to continue working in this direction,we propose another inertial subgradient extragradient method that the inertial factor can be chosen in a special case to be *** suitable mild conditions,we establish the weak convergence of the proposed ***,linear convergence is obtained under strong pseudomonotonicity and Lipschitz continuity ***,some numerical illustrations are given to confirm the theoretical analysis.

关键词： subgradient extragradient method inertial method variational inequality problem pseudomonotone mapping strong convergence convergence rate

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区域铜元素的空间变异和自相关规律分析

地理与地理信息科学 2014年第5期30卷 42-47页

作者： nguyen tien thanh 刘修国任泽中国地质大学信息工程学院湖北武汉430074 河内矿业与地质大学测绘学院越南河内130510

研究地球化学元素在地球化学场中的空间最大变异距离、空间聚集以及空间异常分布情况。通过稳健半变差函数确定空间最大变异距离,在最大变异距离内分别对在不同的距离、原始数据和经过Box-Cox变换的数据使用局部空间自相关Moran′s Ii... 详细信息

研究地球化学元素在地球化学场中的空间最大变异距离、空间聚集以及空间异常分布情况。通过稳健半变差函数确定空间最大变异距离,在最大变异距离内分别对在不同的距离、原始数据和经过Box-Cox变换的数据使用局部空间自相关Moran′s Ii指数研究元素含量的空间聚集和空间异常,与基于C-A多重分形法的异常下限确定方法所圈定的异常范围进行对比。以面积为8 130km2的铜矿区所采集的1∶20万水系沉积物1 341个组合样点的Cu元素含量为例,局部Moran′s Ii能很好地划分空间聚集和空间异常,尤其是针对经过变换的数据能探测出比C-A法范围更大的聚集和异常,符合客观实际,与已知矿床(点)吻合很好。

关键词：空间自相关空间变异勘探地球化学铜矿区

Performance of the Cloud-Based Commodity Cluster

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Computer Technology and Application 2013年第10期4卷 532-537页

作者： Van-Hau Pham Duc-Cuong nguyen tien-Dung nguyen School of Computer Science and Engineering International University Hochiminh City 70000 Vietnam

Traditional HPC （High Performance Computing） cluster is built on top of physical machines. It is usually not practical to reassign these machines to other tasks due to the fact that software installation is time consuming. As a result, these machines are usually dedicated for the cluster usage. Virtualization technology provides an abstract layer which allows several different operating systems （with different software packages） running on top of one physical machine. Cloud computing provides an easy way for the user to manage and interact with the computing resources （the virtual machines in this case）. In this work, we demonstrate the feasibility of building a cloud-based cluster for HPC on top of a set of desktop computers that are interconnected by means of Fast Ethernet. Our cluster has several advantages. For instance, the deployment time of the cluster is quite fast： We need only 5 min to deploy a cluster of 30 machines, Besides, several performance benchmarks have been carried out. As expected, the embarrassingly parallel problem has the linear relationship between the performance and the cluster size.

关键词： Cloud computing HPC cluster virtualization performance.

Corporate Governance and Debt Management of Vietnam＇s SMEs

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Economics World 2015年第2期3卷 91-96页

作者： Pham thu Ha nguyen tien Phong Hanoi University of Technology Hanoi Vietnam

the paper aims to examine the relationship between corporate governance and debt management of Vietnam＇s small and medium enterprises （SMEs）, in a case study of a specific enterprise. It reveals one case that corporate governance factors have strong correlation with performance, due to transparency to the lender, innovative and consistent to the debt management. the results indicate that timely reporting and level of disclosure positively affect corporate performance and ability to raise funds in the financial market. the paper seeds new light into the relationship between corporate governance and debt management of Vietnam＇s SMEs in current context. It finds ways to solve financial dilemma and raise corporate equity value that most SMEs are facing.

关键词： corporate governance renovation transparency debt management small and medium enterprises(SMEs) debt restructuring

Nanocomposite membrane with extremely low methanol crossover for direct methanol fuel cell

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Nanocomposite membrane with extremely low methanol crossover...

Periplaneta Americana Extract Ameliorates LPS-induced Acute Lung Injury Via Reducing Inflammation and Oxidative Stress

2011中国材料研讨会

作者： nguyen tien Hoa School of Chemical and Biomedical Engineering Nanyang Technological University

＜正＞Highly porous polyimide film with tunable pore size,porosity and thickness has been synthesized and used as matrix to construct Nafion infiltrated composite membrane.A very efficient way for an easy and

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当代医学科学(英文) 2023年第3期43卷 445-455页

作者： tien-thanh nguyen Ze DENG Rui-yin GUO Jin-wei CHAI Rui LI Qing-ye ZENG Shi-an LAI Xin CHEN Xue-qing XU Department of Pulmonary and Critical Care Medicine Zhujiang HospitalSouthern Medical UniversityGuangzhou 510282China Guangdong Provincial Key Laboratory of New Drug Screening School of Pharmaceutical SciencesSouthern Medical UniversityGuangzhou 510515China Department of Molecular Chemistry and Biochemistry Faculty of Science and EngineeringDoshisha UniversityKyotanabeKyoto 610-0394Japan

Objective Acute lung injury(ALI)is an acute clinical syndrome characterized by uncontrolled inflammation response,which causes high mortality and poor *** present study determined the protective effect and underlying mechanism of Periplaneta americana extract(PAE)against lipopolysaccharide(LPS)-induced *** the viability of MH-S cells was measured by *** was induced in BALB/c mice by intranasal administration of LPS(5 mg/kg),and the pathological changes,oxidative stress,myeloperoxidase activity,lactate dehydrogenase activity,inflammatory cytokine expression,edema formation,and signal pathway activation in lung tissues and bronchoalveolar lavage fluid(BALF)were examined by H&E staining,MDA,SOD and CAT assays,MPO assay,ELISA,wet/dry analysis,immunofluorescence staining and Western blotting,*** the results revealed that PAE obviously inhibited the release of proinflammatory TNF-α,IL-6 and IL-1βby suppressing the activation of MAPK/Akt/NF-κB signaling pathways in LPS-treated MH-S ***,PAE suppressed the neutrophil infiltration,permeability increase,pathological changes,cellular damage and death,pro-inflammatory cytokines expression,and oxidative stress upregulation,which was associated with its blockage of the MAPK/Akt/NF-κB pathway in lung tissues of ALI *** PAE may serve as a potential agent for ALI treatment due to its anti-inflammatory and anti-oxidative properties,which correlate to the blockage of the MAPK/NF-κB and AKT signaling pathways.

关键词： Periplaneta americana acute lung injury anti-inflammation antioxidant

Does Customer Experience Management Impact Customer Loyalty Shopping at Supermarket？ the Case in the Mekong Delta, Vietnam

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Economics World 2018年第1期6卷 13-21页

作者： Luu tien thuan nguyen Huynh Bao Ngoc nguyen thu Nha trang Can tho University Can Tho Vietnam

this research analyzes and answers the question ＂Does customer experience management impact to customer loyalty shopping at supermarket, in the case of Mekong Delta, Vietnam？＂, 321 customers of supermarkets in the Mekong Delta were interviewed by questionnaire. the descriptive statistics, factor analysis, Cronbach＇s alpha, structural equation modeling, and multi-group structural analysis methods were used in this study. the results confirm that customer experience management impacts to customer loyalty shopping at supermarkets. there are six components of customer experience management including brand name, space, commodity, staff, parking lot, and the presence of other stores in supermarkets. In particular, the commodity composition has the strongest impact on customer experience management and satisfaction and directly influences on customer loyalty. In addition, elements of customer experience management affect customer loyalty indirectly through sensory experience, social experience, and satisfaction. the results of multivariate analysis show that age group, spending per shopping at supermarkets, and marital status of the client do not change the relationships in the research model. Meanwhile, the relationship of the different models of the client group income, gender, education, occupation and customers is different. this study adds value to consumer behavior and customer experience management literature.

关键词： customer experience management customer loyalty satisfaction supermarket

Genetic variants of interferon regulatory factor 5 associated with chronic hepatitis B infection

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World Journal of Gastroenterology 2018年第2期24卷 248-256页

作者： Bui tien Sy Nghiem Xuan Hoan Hoang Van Tong Christian G Meyer nguyen Linh Toan Le Huu Song Claus-thomas Bock thirumalaisamy P Velavan Vietnamese-German Center of Excellence in Medical Research HanoiVietnam Institute of Clinical Infectious Diseases 108 Military Central HospitalHanoiVietnam Institute of Tropical Medicine University of TübingenTübingen 72074Germany Department of Infectious Diseases Robert Koch InstituteBerlin 13302Germany Department of Pathophysiology Vietnam Military Medical UniversityHanoiVietnam

AIM To investigate possible effects of IRF5 polymorphisms in the 3' UTR region of the IFR5 locus on susceptibilityto hepatitis B virus(HBV) infection and progression of liver diseases among clinically classified Vietnamese *** Four IFR5 SNPs(rs13242262 A/T, rs77416878 C/T, rs10488630 A/G, and rs2280714 T/C) were genotyped in clinically classified HBV patients [chronic hepatitis B(CHB). n = 99; liver cirrhosis(LC), n = 131; hepatocellular carcinoma(HCC), n = 149] and in 242 healthy controls by direct sequencing and Taq Man realtime PCR assays. RESULTS Comparing patients and controls, no significant association was observed for the four IFR5 variants. However, the alleles rs13242262 T and rs10488630 G contributed to an increased risk of liver cirrhosis(LC vs CHB: OR = 1.5, 95%CI: 1.1-2.3, adjusted P = 0.04; LC vs CHB: OR = 1.7, 95%CI: 1.1-2.6, adjusted P = 0.019). Haplotype IRF5*TCGT constructed from 4 SNPs was observed frequently in LC compared to CHB patients(OR = 2.1, 95%CI: 1.2-3.3, adjusted P = 0.008). Haplotype IRF5*TCAT occurred rather among CHB patients than in the other HBV patient groups(LC vs CHB: OR = 0.4, 95%CI: 0.2-0.8, adjusted P = 0.03; HCC vs CHB: OR = 0.3, 95%CI: 0.15-0.7, adjusted P = 0.003). the IRF5*TCAT haplotype was also associated with increased levels of ALT, AST and bilirubin. CONCLUSION Our study shows that IFR5 variants may contribute as a host factor in determining the pathogenesis in chronic HBV infections.

关键词： hepatitis B virus infection Liver diseases IRF5 IFR5 polymorphisms IFR5 haplotypes

Study the Changes in Soil Organic Carbon of Rice-Maize Cropping System in the Top Layer of Alluvisol Soil in Dan Phuong: A Study of C-13 Stable Isotope Composition (<i>δ</i><sup>13</sup>C)

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Journal of Environmental Protection 2019年第10期10卷 1361-1372页

作者： nguyen thi Hong thinh Vu Hoai Ha Lan Anh Vo thi Anh Truong Viet Chau Trinh Van Giap tran Minh tien Isotope Hydrology Laboratory Institute for Nuclear Science and TechnologyHanoiVietnam Soils and Fertilizers Research Institute HanoiVietnam

In this study, the experiments on field were conducted to examine the change in the content of soil organic carbon (SOC), its C-13 stable isotope composition (δ 13C) and some main physical, chemical parameters (soil moisture, pH, soil density, content of humic, fulvic, total N, total P, total K) in alluvial soil of Dan Phuong region—Vietnam at a depth of 0 - 30 cm when we changed the regime from 2 maize -1 rice crop to 2 rice - 1 maize crop per 1 year. In addition to analyzing the main parameters in soil, C content and its δ 13C value in parts of rice and maize (root, stem and leaf) were also analyzed to assess the contribution of plant residues on soil organic carbon content after harvest. the experiment was carried out in 2016-2017 on the field with the traditional farming method of local farmers along with the tropical monsoon weather conditions of the North-Vietnam. the results showed that SOC had positive correlation with total N, total P parameters and negative correlation with δ 13C values of soil samples at two layers (0 - 15 cm and 15 - 30 cm). the average of total dry biomass (stem, stump + roots and leaf parts) per 1 rice and 1 maize crop was 10.64 Mg/ha and 9.09 Mg/ha, respectively. the average of δ 13C value of rice (C3 plant) was -29.78‰ and its value of maize (C4 plant) was -12.61‰. the new plant (rice) contributes to the total soil organic carbon content from 11.31% to 44.14% at the 0 - 15 cm layer and from 6.55% to 11.31% at the 15 - 30 cm layer in one-year experiment period.

关键词： Soil Organic Carbon (SOC) C-13 Stable Isotope Maize and Rice Crop Soil Properties

Alfapump®implantable device in management of refractory ascites:An update

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World Journal of Hepatology 2022年第7期14卷 1344-1356页

作者： Delphine Weil-Verhoeven Vincent Di Martino Guido Stirnimann Jean Paul Cervoni Eric nguyen-Khac thierry thévenot Service d’Hépatologie Et Soins Intensifs Digestifs CHRU Jean MinjozBesançon 25030France EA 4266 EPILAB Universitéde Bourgogne Franche-ComtéBesançon 25030France Department of Visceral Surgery and Medicine Inselspital University Hospital and University of BernBern 3010Switzerland Service d’Hépato-Gastroentérologie CHU Amiens-PicardieAmiens 80080France

Refractory ascites(RA)is a frequent and life-threatening complication of *** selected patients with RA,transjugular intrahepatic portosystemic shunt(TIPS)placement and liver transplantation(LT)are currently considered the best therapeutic alternatives to repeated large volume *** patients with a contraindication to TIPS or LT,the alfapump®system(Sequana Medical,Ghent,Belgium)has been developed to reduce the need for iterative paracentesis,and consequently to improve the quality of life and nutritional *** report here recent data on technical progress made since the first implantation,the efficacy and tolerance of the device,the position of the pump in the therapeutic arsenal for refractory ascites,and the grey areas that remain to be clarified regarding the optimal selection of patients who are potential candidates for this treatment.

关键词： Alfapump Refractory ascites Automated low flow ascites pump Cirrhosis Liver