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Nonlinear analysis on dynamic buckling of eccentrically stiffened functionally graded material toroidal shell segment surrounded by elastic foundations in thermal environment and under time-dependent torsional loads

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Applied Mathematics and Mechanics(English Edition) 2016年第7期37卷 835-860页

作者： D.V.DUNG P.M.vuong Department of Mathematics Mechanics and InformaticsVietnam National University Faculty of Civil and Industrial National University of Civil Engineering

The nonlinear analysis with an analytical approach on dynamic torsional buckling of stiffened functionally graded thin toroidal shell segments is investigated. The shell is reinforced by inside stiffeners and surrounded by elastic foundations in a thermal environment and under a time-dependent torsional load. The governing equations are derived based on the Donnell shell theory with the yon Karman geometrical nonlinearity, the Stein and McElman assumption, the smeared stiffeners technique, and the Galerkin method. A deflection function with three terms is chosen. The thermal parameters of the uniform temperature rise and nonlinear temperature conduction law are found in an explicit form. A closed-form expression for determining the static critical torsional load is obtained. A critical dynamic torsional load is found by the fourth-order Runge-Kutta method and the Budiansky-Roth criterion. The effects of stiffeners, foundations, material, and dimensional parameters on dynamic responses of shells are considered.

关键词： toroidal shell segment functionally graded material (FGM) stiffened shell,critical static and dynamic torsional load thermal environment

A Data Collection on Secondary School Students’STEM Performance and Reading Practices in an Emerging Country

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Data Intelligence 2021年第2期3卷 336-356页

作者： Quan-Hoang vuong Viet-Phuong La Manh-Toan Ho Thanh-Hang Pham Thu-Trang vuong Ha-My vuong Minh-Hoang Nguyen Centre for Interdisciplinary Social Research Phenikaa UniversityYen Nghia WardHa Dong DistrictHanoi 100803Vietnam A.I.for Social Data Lab Vuong&AssociatesDong Da DistrictHanoi 100000Vietnam School of Business and Management RMIT Vietnam UniversityHanoi 100000Vietnam

Science,technology,engineering,and mathematics(STEM)education has become a critical factor in promoting sustainable ***,book reading is still an essential method for cognitive development and knowledge *** developing countries where STEM teaching and learning resources are limited,book reading is an important educational tool to promote ***,public data sets about STEM education and book reading behaviors in emerging countries are *** article,therefore,aims to present a data set of 4,966 secondary school students from a school-based data collection in *** data set comprises of five major categories:1)students’personal information(including STEM performance),2)family-related information,3)book reading preferences,4)book reading frequency/habits,and 5)classroom *** introducing the designing principles,the data collection method,and the variables in the data set,we aim to provide researchers,policymakers,and educators with well-validated resources and guidelines to conduct low-cost research,pedagogical programs in emerging countries.

关键词： STEM education Socio-economic status Book reading Emerging country Students

Radium-223 in metastatic castration resistant prostate cancer

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Asian Journal of Andrology 2014年第3期16卷 348-353页

作者： Winston vuong Oliver Sartor Sumanta K Pal Department of Medical Oncology and Experimental Therapeutics City of Hope Comprehensive Cancer Center Duarte CA Department of Medicine Tulane University School of Medicine New Orleans LA USA

In 2004, docetaxel was approved for the treatment of metastatic castration-resistant prostate cancer （mCRPC）. For the next several years, there was a lull in drug approvals. However, from 2010 onwards, 5 additional therapies have been approved on the basis of showing a survival benefit in phase III studies. These agents include sipuleuceI-T, cabazitaxel, abiraterone, enzalutamide and （most recently） radium-223. Amongst radiopharmaceuticals currently used for advanced prostate cancer （e.g. samarium-153 and strontium-89）, radium-223 possesses several unique properties. As an alpha-emitting compound, the agent produces a high-energy output over a short range, facilitating selective destruction of tissue within the bone in the region of osteoblastic lesions while sparing surrounding normal tissue. The current review will outline biological rationale for radium-223 and also provide an overview of preclinical and clinical development of the agent. Rational sequencing of radium-223 and combinations, in the increasingly complex landscape of mCRPC will be discussed, along with factors influencing clinical implementation.

关键词： alpharadin bone metastases metastatic castration-resistant prostate cancer radiopharmaceuticals radium-223 Xofigo

Management of localized prostate cancer： the pendulum swings （back to the middle）

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Asian Journal of Andrology 2014年第4期16卷 570-571页

Herein, we discuss 18-year follow-up data from the Scandinavian ProstateCancer Group-4 （SPCG-4） trial, a randomized study comparing observation and radical prostatectomy （RP） in patients with localized prostate cancer. The results of this study are contrasted with another study employing a similar randomization, the Prostate Cancer Intervention Versus Observation Trial （PIVOT）. We highlight several key differences in study eligibility and enrollment that may account for distinct results, and describe how these datasets impact the complex landscape of therapy for localized prostate cancer.

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Nanomaterials for treating cardiovascular diseases:A review

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Bioactive Materials 2017年第4期2卷 185-198页

作者： Wensen Jiang Dana Rutherford Tiffany vuong Huinan Liu Materials Science and Engineering University of CaliforniaRiversideRiversideCA92521USA Department of Bioengineering University of CaliforniaRiversideRiversideCA92521USA

Nanomaterials such as nanostructured surfaces,nanoparticles,and nanocomposites represent new viable sources for future therapeutics for cardiovascular *** special properties of nanomaterials such as their intrinsic physiochemical properties,surface energy and surface topographies could actively enhance desirable cellular responses within the cardiovascular system,projecting a growing potential for clinical *** progress on nanomaterials opened up new opportunities for treating cardiovascular *** translation of nanomaterials into cardiovascular applications requires a comprehensive understanding of both nanomaterials and biomedicine,and,thus,it is critical to stress current advancements on both *** this review,the authors introduced crucial fabrication techniques for promising nanomaterials for cardiovascular *** review highlighted the key elements to consider for their fabrication,properties and *** important concerns relevant to cardiovascular nanomaterials,such as cellular responses to nanomaterials and the toxicity of nanomaterials,are also *** review provided an overview of necessary knowledge and key concerns on nanomaterials specific for treating cardiovascular diseases,from the perspectives of both material science and biomedicine.

关键词： Nanomaterials Cardiovascular diseases Fabrication Nanostructured surfaces Nanoparticles and nanocomposites

Effect of sintering temperature on the dielectric,ferroelectric and energy storage properties of SnO_(2)-doped Bi_(0.5)(Na_(0.8)K_(0.2))_(0.5)TiO_(3)lead-free ceramics

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Journal of Advanced Dielectrics 2020年第4期10卷 13-21页

作者： Nguyen Truong-Tho Le Dai vuong Department of Physics College of Sciences Hue UniversityHue CityVietnam Faculty of Natural Sciences Thu Dau Mot University Binh Duong Province Vietnam

Sintered lead-free Bi_(0.5)(Na_(0.8)K_(0.2)T_(0.5)(Ti0:96Sn0:04TO_(3)ceramics(BNKTS)have been fabricated via a solid-state *** effect of sintering temperature on the structural,morphological,dielectric,ferroelectric and energy storage properties of BNKTS ceramics was investigated,and it was found that the electrical properties of the synthesized ceramics increased with the increase in the sintering temperature,and the highest values were achieved at 1100℃.The ceramics sintered at the optimized temperature of 1100℃exhibited the best physical,dielectric,ferroelectric and energy storage properties,namely,high density(the relative density,ρ=5:88 ***^(-3),approximate to 96.7%of the theoretical value),high densification factor(DF=0:93),high dielectric constant(ε_(r)=1215),low dielectric loss(tanδ=0:051),highest dielectric constant(ε_(max)=4335),high remanent polarization(Pr=9:5μ***^(-2),high coercive field(E_(c)=14:3 kV/cm),high energy storage density(0.12 J/cm^(3),and high energy storage efficiency(41.7%at 46.3 kV/cm).

关键词： Lead-free ceramics BNKT sintering temperature dielectric constant

Diabetic neuropathy research: from mouse models to targets for treatment

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Neural Regeneration Research 2019年第11期14卷 1870-1879页

作者： vuong M. Pham Shinji Matsumura Tayo Katano Nobuo Funatsu Seiji Ito Department of Medical Chemistry Kansai Medical UniversityHirakataOsakaJapan Singapore Institute for Neurotechnology (SINAPSE) National University of SingaporeSingapore Department of Anesthesiology Osaka Medical CollegeTakatsukiOsakaJapan

Diabetic neuropathy is one of the most serious complications of diabetes, and its increase shows no sign of stopping. Furthermore, current clinical treatments do not yet approach the best effectiveness. Thus, the development of better strategies for treating diabetic neuropathy is an urgent matter. In this review, we first discuss the advantages and disadvantages of some major mouse models of diabetic neuropathy and then address the targets for mechanism-based treatment that have been studied. We also introduce our studies on each part. Using stem cells as a source of neurotrophic factors to target extrinsic factors of diabetic neuropathy, we found that they present a promising treatment.

关键词： brain derived neurotrophic factor diabetes extrinsic factors nerve growth factor nerve regeneration neurotrophic factors non-obese type 2 diabetes phosphatase and tensin homolog stem cell streptozotocin

Molecular cloning, characterization, and antioxidant function of catalase in Lymantria dispar asiatic (Lepidoptera: Lymantriidae) under avermectin stress

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Journal of Forestry Research 2020年第6期31卷 2563-2570页

作者： Jianyong Zeng Bowen Zhang Thi Minh Dien vuong Tingting Zhang Jing Yang Guocai Zhang School of Forest Northeast Forestry UniversityHarbin 150040People’s Republic of China Vietnam Academy of Agricultural Sciences Hanoi 100803Vietnam

The critical antioxidant catalase(CAT)breaks down hydrogen peroxide induced by environmental *** we cloned full length catalase cDNA from Lymantria dispar asiatic(LdCAT).Bioinformatic analyses showed that open reading frames of LdCAT contains 1524 bp,encoding 507 amino acids with molecular weight of 126.99 kDa,theoretical pI of 5.00,aliphatic index of 29.92,grand average of hydropathicity of 0.764,and instability index(II)of *** BLAST and multiple sequence alignment indicated that LdCAT had high identity with CAT from other insects,especially *** a phylogenetic analysis,LdCAT was most similar to CAT from Spodoptera litura and *** realtime polymerase chain reaction showed that LdCAT transcripts in all instar larvae and the five tissues tested,verifying the ubiquity of LdCAT in ***,LdCAT of third instar larvae was significantly upregulated after they fed on avermectin at sublethal and LC10 *** highest relative transcript levels were found 2 h after an avermectin spray at LC90,and in the cuticula,rather than heads,fat bodies,malpighian tubes,and midguts after a spray avermectin at a sublethal *** expression level of LdCAT under pesticide stresses here suggested that CAT is an important antioxidant enzyme of *** defensing against pesticide stress and may be a good target for controlling this pest.

关键词： Lymantria dispar asiatic Gypsy moth Catalase Molecular cloning Relative expression level Pesticide stress Instar

Properties of poly（1-naphthylamine）/Fe3O4 composites and arsenic adsorption capacity in wastewater

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Frontiers of Materials Science 2016年第1期10卷 56-65页

作者： Minh Thi TRAN Thi Huyen Trang NGUYEN Quoc Trung VU Minh vuong NGUYEN Faculty of Physics Hanoi National University of Education 136-Xuanthuy Street Caugiay District Hanoi Vietnam Faculty of Chemistry Hanoi National University of Education 136-Xuanthuy Street Caugiay District Hanoi Vietnam Department of Physics Quynhon University 170 An Duong Vuong Quynhon Vietnam

The research results of poly（1-naphthylamine）lFe3O4 （PNA/Fe3O4） nanocomposites synthesized by a chemical method for As（Ⅲ） wastewater treatment are presented in this paper. XRD patterns and TEM images showed that the Fe3O4 grain size varied from 13 to 20 nm. The results of Raman spectral analysis showed that PNA participated in part of the PNA/Fe3O4 composite samples. The grain size of PNA/Fe3O4 composite samples is about 25-30 nm measured by SEM. The results of vibrating sample magnetometer measurements at room temperature showed that the saturation magnetic moment of PNA/Fe3O4 samples decreased from 63.13 to 43.43 emu/g, while the PNA concentration increased from 5% to 15%. The nitrogen adsorption-desorption isotherm of samples at 77 K at a relative pressure PIPo of about 1 was studied in order to investigate the surface and porous structure of nanoparticles by the BET method. Although the saturation magnetic moments of samples decreased with the polymer concentration increase, the arsenic adsorption capacity of the PNA/Fe3O4 sample with the PNA concentration of 5% is better than that of Fe3O4 in a solution with pH = 7. In the solution with pH 〉 14, the arsenic adsorption of magnetic nanoparticles is insignificant.

关键词： poly(1-naphthylamin)/Fe3O4 nanocomposite magnetization arsenic adsorption