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Effect of terminal locations of pods on biomass production and ^(13)C partitioning in a fasciated stem soybean Shakujo

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第1期12卷 72-82页

作者： Kyosuke YAMADA Aoi SASAKURA Kiyoshi NISHIWAKI Hany A.EL-SHEMY Pravat K.MOHAPAtRA nguyen t.nguyen Hideki KUROSAKI Syunsuke KANAI Junki ItO Kounosuke FUJItA Department of Environmental Dynamics and Management Graduate School of Biosphere SciencesHiroshima University Nagano Chushin Agricultural Experimental Station Faculty of Agriculture Research Park (FARP) and Biochemistry Department Faculty of AgricultureCairo University School of Life Sciences Sambalpur University Hokkaido Prefectural Kitami Agricultural Experiment Station Hiroshima Prefectural Agriculture Research Center

this study addresses the hypothesis that stagnation of soybean yield on the farm can be improved by selection of a physiological trait favoring carbon assimilate partitioning to terminally placed pods versus genotypes having axillary pods at close plant spacing.13C was fed to source-sink units comprising a leaf,axillary/terminal pods,and petioles at upper and lower positions of the stem axis in two soybean cultivars,namely Shakujo and Enrei,at different densities of *** cultivars differ significantly in architecture,Shakujo bearing a few hundreds of pods in close succession to one another in a terminally placed raceme,in contrast to Enrei having axillary *** yield per plant was higher in Enrei than in Shakujo at low density,but Shakujo out-yielded Enrei at close *** density decreased yield per plant and altered the pattern of assimilate partitioning significantly within the plants for both *** high density more assimilates moved to the upper parts at the cost of the lower *** terminally placed pods of Shakujo were advantaged to receive assimilates under density *** benefit was accrued to pod filling of Enrei,however,under this condition.

关键词： Fasciated stem Grain yield Photosynthesis Photosynthate partitioning Population density Soybean Source-sink unit

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(Catecholate)Cu^(I)_(2)-Displayed Porous Organic Polymers as Efficient Heterogeneous Catalysts for the Mild and Selective Aerobic Oxidation of Alcohols

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CCS Chemistry 2023年第2期5卷 445-454页

作者： Youlong Zhu Debabrata Mukherjee theodore R.Helgert SonBinh t.nguyen Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education School of ChemistrySun Yat-sen UniversityGuangzhou 510006 Chemical Sciences and Engineering Division Argonne National LaboratoryArgonneIL 60439 Department of Chemistry International Institute for NanotechnologyNorthwestern UniversityEvanstonIL 60208

Porous organic polymers(POPs)containing catalytically active sites are of paramount importance for heterogeneous ***,the catalytically active sites of reported POPs are mostly limited to mononuclear metal ***,we report the reaction between catechol-containing POPs(Cat-POPs)and[CuIMes]n to afford the corresponding Cu^(I)_(2)-CatPOPs with a putative vicinal binuclear(catecholate)Cu^(I)_(2)*** resulting Cu^(I)_(2)-CatPOPs exhibit high Brunauer–Emmett–teller surface areas,good stability,and excellent catalytic activity toward the aerobic oxidation of a broad range of primary and secondary alcohols under mild conditions,with either 2,2,6,6-tetramethylpiperidinyl-N-oxyl or 9-azabicyclo[3.3.0]nonane-N-oxyl as the *** green aerobic oxidation catalysts,the Cu^(I)_(2)-CatPOPs are much more active than the correspondingmononuclear CuIICatPOPs,where each catecholate moiety only supports one CuII center;CuI-ConPOPs,where the binding sites for CuI is a nonvicinal 1,4-dihydroxybenzene moiety;and the homogeneous analogue(3,6-di-tert-butyl catecholate)Cu^(I)_(2).these results are consistent with a proposed vicinal binuclear Cu^(I)_(2)structure that can efficiently activate molecular oxygen for the aerobic oxidation of alcohols,mechanistically similar to that observed in dicopper-containing *** results demonstrate the facile preparation of POPs with binuclear catalytically active sites that function as green heterogeneous catalysts for efficient oxidation of alcohols.

关键词： porous organic polymers binuclear copper(I) heterogeneous catalysis aerobic oxidation green chemistry

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Mitochondrial damage and biogenesis in acetaminophen-induced liver injury

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Liver Research 2019年第3期3卷 150-156页

作者： Hartmut Jaeschke Luqi Duan Nga t.nguyen Anup Ramachandran Department of Pharmacology Toxicology&TherapeuticsUniversity of Kansas Medical CenterKansas CityKSUSA

Liver injury and acute liver failure caused by acetaminophen(APAP)overdose is the clinically most important drug toxicity in Western *** investigations have revealed a central role of mitochondria in the *** formation of the reactive metabolite N-acetyl-p-benzoquinone imine(NAPQI)after an overdose leads to hepatic glutathione depletion,mitochondrial protein adducts formation and an initial oxidant stress,which triggers the activation of mitogen activated protein(MAP)kinase cascade ultimately leading to c-jun N-terminal kinase(JNK)***-JNK translocates to the mitochondria and amplifies the oxidative and nitrosative stress eventually causing the mitochondrial membrane permeability transition pore opening and cessation of adenosine triphosphate(AtP)*** addition,mitochondrial matrix swelling ruptures the outer membrane and releases endonucleases,which cause nuclear deoxyribonucleic acid(DNA)***,the nuclear DNA damage and the extensive mitochondrial dysfunction result in necrotic cell ***,the procell death signaling events are counteracted by adaptive responses such as autophagy and mitochondrial *** improved mechanistic insight into the pathophysiology leads to better understanding of the mechanisms of action of the existing antidote N-acetylcysteine and justifies the clinical testing of novel therapeutics such as 4-methylpyrazole and calmangafodipir.

关键词： Acetaminophen(APAP)hepatotoxicity Mitochondrial dysfunction Biogenesis Oxidant stress Peroxynitrite c-Jun N-terminal kinase(JNK)

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A Cell-Based Smoothed Finite Element Method for Modal Analysis of Non-Woven Fabrics

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Computers, Materials & Continua 2021年第6期67卷 2765-2795页

作者： nguyen t.Quyen N.Dourado A.J.P.Gomes F.B.N.Ferreira C2t—Centro de Ciência e tecnologia têxtil Departamento de Engenharia TêxtilUniversidade do MinhoCampus de AzurémGuimarães4804-533Portugal CMEMS-UMinho Departamento de Engenharia MecânicaUniversidade do MinhoCampus de AzurémGuimarães4804-533Portugal Department of Computer Science Universidade da Beira InteriorConvento de Sto.AntónioCovilhã6201-001Portugal Instituto de telecomunicações R.Marquês deÁvila e BolamaCovilhã6201-001Portugal

the combination of a 4-node quadrilateral mixed interpolation of tensorial components element(MItC4)and the cell-based smoothed finite element method(CSFEM)was formulated and implemented in this work for the analysis of free vibration and unidirectional buckling of shell *** formulation was applied to numerous numerical examples of non-woven *** CSFEM schemes do not require coordinate transformation,spurious modes and numerical instabilities are prevented using bilinear quadrilateral element subdivided into two,three and four smoothing *** improvement of the original CSFEM formulation was made regarding the calculation of outward unit normal vectors,which allowed to remove the integral operator in the strain smoothing *** procedure conducted both to the simplification of the developed formulation and the reduction of computational cost.A wide range of values for the thickness-to-length ratio and edge boundary conditions were *** developed numerical model proved to overcome the shear locking phenomenon with success,revealing both reduced implementation effort and computational cost in comparison to the conventional FEM *** cell-based strain smoothing technique used in this work yields accurate results and generally attains higher convergence rate in energy at low computational cost.

关键词： Mindlin-Reissner theory of plates shear-locking gradient/strain smoothing technique non-woven fabric

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Polygonal Finite Element for two-Dimensional Lid-Driven Cavity Flow

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Computers, Materials & Continua 2022年第3期70卷 4217-4239页

作者： t.Vu-Huu C.Le-thanh H.nguyen-Xuan M.Abdel-Wahab Faculty of Civil Engineering Vietnam Maritime University484 Lach Tray Str.Hai PhongVietnam Faculty of Civil Engineering and Electricity Ho Chi Minh City Open UniversityVietnam CIRtech Institute Ho ChiMinh City University of Technology(HUTECH)Ho Chi Minh CityVietnam Department of Architectural Engineering Sejong University209 NeungdongroGwangjinguSeoul05006Republic of Korea Soete Laboratory Faculty of Engineering and ArchitectureGhent UniversityTechnologiepark Zwijnaarde903B-9052ZwijnaardeBelgium

this paper investigates a polygonal finite element(PFE)to solve a two-dimensional(2D)incompressible steady fluid problem in a cavity *** is a well-known standard benchmark(i.e.,lid-driven cavity flow)-to evaluate the numerical methods in solving fluid problems controlled by the Navier-Stokes(N-S)equation *** approximation solutions provided in this research are based on our developed equal-order mixed PFE,called *** is an exciting development based on constructing the mixed scheme method of two equal-order discretisation spaces for both fluid pressure and velocity fields of flows and our proposed stabilisation *** this research,to handle the nonlinear problem of N-S,the Picard iteration scheme is *** proposed method’s performance and convergence are validated by several simulations coded by commercial software,i.e.,*** this research,the benchmark is executed with variousReynolds numbers up to the maximum Re=*** results then numerously compared to available sources in the literature.

关键词： Lid-driven cavity incompressible steady Navier-Stokes equations polygonal finite element method

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Stabilization for Equal-Order Polygonal Finite Element Method for High Fluid Velocity and Pressure Gradient

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Computers, Materials & Continua 2020年第3期62卷 1109-1123页

作者： t.Vu-Huu C.Le-thanh H.nguyen-Xuan M.Abdel-Wahab Department of Electrical energy MetalsMechanical Constructions and SystemsFaculty of Engineering and ArchitectureGhent UniversityGhentBelgium Faculty of Civil Engineering Vietnam Maritime UniversityHai PhongVietnam Faculty of Civil Engineering and Electricity Ho Chi Minh City Open UniversityHo Chi MinhVietnam CIRtech Institute Ho Chi Minh City University of Technology(HUTECH)Ho Chi MinhVietnam Division of Computational Mechanics Ton Duc Thang UniversityHo Chi MinhVietnam Faculty of Civil Engineering Ton Duc Thang UniversityHo Chi MinhVietnam

this paper presents an adapted stabilisation method for the equal-order mixed scheme of finite elements on convex polygonal meshes to analyse the high velocity and pressure gradient of incompressible fluid flows that are governed by Stokes equations *** technique is constructed by a local pressure projection which is extremely simple,yet effective,to eliminate the poor or even non-convergence as well as the instability of equal-order mixed polygonal *** this research,some numerical examples of incompressible Stokes fluid flow that is coded and programmed by MAtLAB will be presented to examine the effectiveness of the proposed stabilised method.

关键词： Polygonal finite element method fluid computation stokes equation mixed method local projection

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High human disturbance decreases individual variability in skink escape behavior

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Current Zoology 2020年第1期66卷 63-70页

作者： Dana M.WILLIAMS Phat-tan nguyen Kemal CHAN Madeleine KROHN Daniel t.BLUMStEIN Department of Ecology&Evolutionary Biology University of California621 Young Drive SouthLos AngelesCA90095-1606USA

Animals living around people may modify their antipredator behavior as a function of proximity to humans,and this response has profound implications for whether or not a population can coexist with *** asked whether inland blue-tailed skinks Emoia impar modified their individual antipredator behavior as a function of differential exposure to *** conducted multiple consecutive flushes and recorded 2 measures of antipredator response:flight initiation distance(FID),the distance from a threatening stimulus at which an individual flees,and distance fled,the distance an individual fled after a *** used a multiple model comparison approach to quantify variation in individual escape behavior across multiple approaches and to test for differences in between-individual variation among *** found that individuals tolerated closer approach and fled shorter distances at locations with relatively less human disturbance than at locations with medium and high human disturbance,*** addition,skinks living at high human disturbance sites had less variable FIDs than at low human disturbance *** theories may explain these *** against less favorable phenotypes has reduced behavioral variation in urban habitats and behavioral plasticity allows individuals to flexibly adjust their behavioral patterns in response to human *** results highlight the importance of studying variation within populations,at the individual level,which may better elucidate the impact that human disturbance has on the behavioral composition of populations.

关键词： distance fled Emoia impar flight initiation distance habitat sorting habituation urbanization

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Climate change and groundwater resources in Mekong Delta, Vietnam

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Journal of Groundwater Science and Engineering 2017年第1期5卷 76-90页

作者： Duong D Bui Nghia C nguyen Nuong t Bui Anh t t Le Dao t Le National Center for Water Resources Planning and Investigation MONRE Vietnam tokyo Metropolitan University Japan Center for Environmental Fluid Dynamics Hanoi University of Science Vietnam

Groundwater resources have considerable influences on the human population and socioeconomic development of Vietnam and the Mekong River Delta(MRD). this paper presents an overview of the relationship between climate change and groundwater in the MRD, including the challenges, strategies and technical measures. Our results showed that groundwater levels are related to other climate and hydrological variables(i.e., rainfall, river levels, etc.); therefore, the impacts of climate change on the groundwater resources of the Mekong delta are significant, especially on groundwater recharge. Based on the results of this study, it is recommended that groundwater development in the future should focus on reducing groundwater harvesting, enhancing groundwater quantity by establishing artificial works and exploiting surface water. this study suggests that the Artificial Neural Network(ANN) model is an effective tool for forecasting groundwater levels in periods of 1 month and 3 months for aquifers in the natural and tidal regime areas of the delta.

关键词： Groundwater management Climate change ANN model Mekong River Delta

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Fulminant liver failure models with subsequent encephalopathy in the mouse

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Hepatobiliary & Pancreatic Diseases International 2011年第6期10卷 611-619页

作者： Ann-Marie t Baine tomohide Hori Lindsay B Gardner Shinji Uemoto Justin H nguyen Department of Neuroscience Mayo Clinic in Florida JacksonvilleFL 32224USA Divisions of Hepato-Pancreato-Biliary Transplant and Pediatric SurgeryDepartment of SurgeryKyoto University Graduate School of MedicineKyoto 606-8507Japan Division of transplant Surgery Department of TransplantationMayo Clinic in FloridaJacksonvilleFL 32224USA

BACKGROUND:A reliable model of fulminant liver failure (FLF) is urgently required in this research *** study aimed to develop a murine FLF ***:We used three groups of male C57BL/6 mice:control,with azoxymethane treatment (AOM group),and with galactosamine and tumor necrosis factor-alpha treatment (Gal+tNF-α group).the effects of body temperature (Bt) control on survival in all three groups were investigated Using Bt control,we compared the survival,histopathological findings and biochemical/coagulation profiles between the two experimental *** effects of hydration on international normalized ratios of prothrombin time (Pt INRs) were also ***-dependent survival curves were constructed for both experimental *** behavior was assessed using a coma ***:No unexpected Bt effects were seen in the control *** AOM group,but not the Gal+tNF-α group showed a significant difference in survival curves between those with and without Bt *** assessment showed consistent FLF findings in both experimental groups with Bt *** were significant differences between the experimental groups in aspartate aminotransferase levels and Pt-INRs,and significant differences in Pt-INRs between the sufficiently and insufficiently hydrated *** were significant differences between FLF models in the duration of each coma stage,with significant differences in stages 1 and 3 as percentages of the disease state (stages 1-4).the two FLF models with Bt care showed different survival curves in the dose-dependent survival ***:AOM provides a good FLF model,but requires a specialized environment and careful Bt *** FLF models may also be useful,depending on the research *** attention to caregiving and close observation are indispensable for successful FLF models.

关键词： animal model acute liver failure azoxymethane galactosamine tumor necrosis factor-alpha

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Study the Hydration and the Microstructure of Cement Blended with Rice Husk Ash in Comparison with Silica Fume

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武汉理工大学学报 2010年第17期32卷 252-255,260页

作者： nguyen V t YE G VAN B K BUI D D Faculty of Civil Engineering and Geosciences Delft University of TechnologyP.O. Box 50482600 GADelftThe Netherlands Department of Building Materials Hanoi University of Civil EngineeringHanoi 700803Vietnam

Rice husk ask (RHA) is not a ultra-fine material as silica fume (SF),but possesses a very high specific surface area because of its porous structure. With the similar chemical composition of RHA and SF,the activity of RHA,therefore,is different from that of SF. the objective of this work is to study the hydration and the microstructure of Portland cement blended with RHA in comparison with SF. the test results show that SF refined the pore structure of cement paste better than RHA. However,the effect of RHA on cement hydration is more pronouned than that of SF for the mixture with low water to binder ratio.

关键词： hydration isothermal calorimetry mercury intrusion porosimetry (MIP) microstructure rice husk ash silica fume

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