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Journal of Energy Chemistry 2018年第1期27卷 300-305页

作者： Vaiyapuri Soundharrajan Balaji Sambandam Jinju Song Sungjin Kim Jeonggeun Jo pham Tung Duong Seokhun Kim Vinod mathew Jaekook Kim Department of materials Science and Engineering Chonnam National University

NiO nanoparticles with average particles size of 30 nm are synthesized using a one-pot metal–organic framework-combustion（mOF-C） technique, for use as an anode material in rechargeable lithium ion batteries（LIBs）. The structural and electronic properties of these nanoparticles are studied using various techniques, including powder X-ray diffraction（PXrD）, transmission electron microscopy（TEm）, scanning electron microscopy（SEm）, X-ray photoelectron spectroscopy（XPS）, and N_2 adsorption/desorption studies. The as-synthesized NiO nanoparticles sustained reversible stable capacities of 748 and 410 mAh/g at applied current densities of 500 and 1000 m A/g, respectively, after 100 cycles. Furthermore, the anode displays a notable rate capability, achieving a stable capacity of ~200 mAh/g at a high current density of10 A/g. These results indicate that the size of the NiO nanoparticles and their high surface area influence their electrochemical properties. Specifically, this combustion strategy is clearly favorable for improving the cyclability and rate capability of various metal oxides in rechargeable battery electrodes.

关键词： metal-organic frameworks Combustion NiO nanoparticles Lithium ion batteries High rate capability

Development of a PArCS/Serpent model for neutronics analysis of the Dalat nuclear research reactor

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Nuclear Science and Techniques 2021年第2期32卷 32-44页

作者： Viet-Phu Tran Kien-Cuong Nguyen Donny Hartanto Hoai-Nam Tran Vinh Thanh Tran Van-Khanh Hoang pham Nhu Viet Ha Institute for Nuclear Science and Technology(INST) Vietnam Atomic Energy Institute(VINATOM)179 Hoang Quoc Viet str.Cau Giay DistrictHanoi 100000Vietnam Nuclear research Institute(NrI) Vietnam Atomic Energy Institute(VINATOM)01 Nguyen Tu LucDalatLamdong 670000Vietnam Department of mechanical and Nuclear Engineering University of SharjahPO.BOX 27272SharjahUnited Arab Emirates Institute of Fundamental and Applied Sciences Duy Tan UniversityHo Chi Minh city 700000Vietnam Faculty of Natural Science Duy Tan UniversityDanang 550000Vietnam Nuclear Safety Division Technical Support Center for Radiation and Nuclear Safety and Emergency ResponseVietnam Agency for Radiation and Nuclear Safety(VARANS)113 Tran Duy Hung str.Cau Giay DistrictHanoi 100000Vietnam

Cross-sectional homogenization for full-core calculations of small and complex reactor configurations,such as research reactors,has been recently recognized as an interesting and challenging *** paper presents the development of a PArCS/Serpent model for the neutronics analysis of a research reactor type TrIGA mark-II loaded with russian VVr-m2 fuel(known as the Dalat Nuclear research reactor or DNrr).The full-scale DNrr model and a supercell model for a shim/safety rod and its surrounding fuel bundles with the monte Carlo code Serpent 2 were proposed to generate homogenized fewgroup cross sections for full-core diffusion calculations with *** full-scale DNrr model with Serpent 2 was also utilized as a reference to verify the PArCS/Serpent *** of the effective neutron multiplication factors,radial and axial core power distributions,and control rod worths showed a generally good agreement between PArCS and Serpent *** addition,the discrepancies between the PArCS and Serpent 2 results are also ***,the results indicate the applicability of the PArCS/Serpent model for further steady state and transient analyses of the DNrr.

关键词： PArCS Serpent 2 Group constant DNrr

Vegetable Production After Flooded rice Improves Soil Properties in the red river Delta, Vietnam

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Pedosphere 2015年第1期25卷 130-139页

作者： Arij P.EVErAArTS Jacques J.NEETESON pham T.T.HUONG Paul C.STrUIK Applied Plant research Wageningen University and Research Centre Plant research International Wageningen University and Research Centre Field Crop research Institute Hai Duong and Hanoi University of Agriculture Centre for Crop Systems Analysis Wageningen University

Vegetable production in South East Asia often is in rotation with flooded rice. The puddling of the soil with flooded rice production may result in unfavourable soil conditions for the subsequent production of dry land crops. To establish whether permanent vegetable production results in favourable soil conditions for vegetables, the effects of five different permanent vegetable production systems and a system of vegetable production in rotation with flooded rice on soil properties after flooded rice were studied in a 2-year field experiment. Bulk density at 0.05–0.10 m depth layer decreased with permanent vegetable production and vegetable production in rotation with flooded rice. The decrease in bulk density was influenced by the application of organic manure and rice husks, and especially by the number of crops cultivated, suggesting that frequency of soil tillage had a major effect on bulk density. Ploughing with buffalo traction after flooded rice, in combination with construction of raised beds, could reduce or totally eliminate negative effects of puddling on soil structure. Bulk density at 0.15–0.20 m soil depth was not influenced. Soil acidity decreased significantly in all systems. Soil organic carbon increased in all systems, but significant increase was only found in two permanent vegetable production systems. Available phosphorus(P) significantly increased in two permanent vegetable production systems, with a positively correlation to the amount of P applied. The significant decrease in bulk density and increase in p H(H2O), after only 2 years, showed that soil conditions after flooded rice could be improved in a short time under intensive vegetable production.

关键词：蔬菜生产土壤特性稻田水淹三角洲生产系统堆积密度红河

Pharmacokinetic Prediction of Levofloxacin Accumulation in Tissue and Its Association to Tendinopathy

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Pharmacology & Pharmacy 2013年第1期4卷 121-131页

作者： Loan pham John m. Christensen rosita rodriguez-Proteau Camargo Pharmaceuticals Cincinnati USA Department of Pharmaceutical Sciences College of Pharmacy Oregon State University Corvallis USA

Objectives: We investigated pharmacokinetic tissue distributions of Levofloxacin to explain adverse tendon incidents. methods: The pharmacokinetic profiles of single and multiple dosing of 500 mg Levofloxacin following oral and IV infusion administration were simulated. monte Carlo simulation was used to simulate the drug concentration profiles in plasma and tissue after seven dosing regimens while varying the drug’s elimination and distribution rates to analyze the effects of changing those rates on Levofloxacin accumulation in tissue. results: Simulated data following oral and IV administration reflect well the reported data (mean simulated plasma Cmax = 6.59 μg/mL and 5.19 μg/mL for IV and oral versus 6.4 μg/mL and 5.2 μg/mL for observed clinical IV and oral route, respectively). Simulations of seven repetitive doses are also in agreement with reported values. Low elimination rates affect the drug concentration in plasma and tissue significantly with the concentration in plasma rising to 35 μg/mL at day 7. Normal elimination rates together with escalation of distribution rates from plasma to tissue increase tissue concentration after 7 doses to 9.5 μg/mL, a value is more than twice that of normal. Conclusions: Simulation can be used to evaluate drug concentration in different tissues. The unexpectedly high concentrations in some cases may explain the reason for tendinopathy in clinical settings.

关键词： monte Carlo Simulation Tendon Incidents Levofloxacin Pharmacokinetic

Use of Unmanned Aerial System (UAS) Phenotyping to Predict Pod and Seed Yield in Organic Peanuts

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American Journal of Plant Sciences 2023年第3期14卷 415-426页

作者： Aurora manley Waltram ravelombola John Cason Brian Bennett Hanh pham Emi Kimura Caroline ruhl Waqas Ahmad madeline Brown Texas A&m AgriLife research Vernon Texas USA Department of Soil and Crop Sciences Texas A&M University College Station Texas USA Texas A&m AgriLife research Stephenville Texas USA Texas A&m AgriLife research Lubbock Texas USA Texas A&m AgriLife Extension Vernon Texas USA

Peanut (Arachis hypogaea L.) is a highly nutritious food that is an excellent source of protein and is associated with increased coronary health, lower risk of type-2 diabetes, lower risk of breast cancer and a healthy profile of inflammatory biomarkers. The domestic demand for organic peanuts has significantly increased, requiring new breeding efforts to develop peanut varieties adapted to the organic farming system. The use of unmanned aerial system (UAS) has gained scientific attention because of the ability to generate high-throughput phenotypic data. However, it has not been fully investigated for phenotyping agronomic traits of organic peanuts. Peanuts are beneficial for cardio system protection and are widely used. Within the U.S., peanuts are grown in 11 states on roughly 600,000 hectares and averaging 4500 kg/ha. This study’s objective was to test the accuracy of UAS data in the phenotyping pod and seed yield of organic peanuts. UAS data was collected from a field plot with 20 Spanish peanut breeding lines on July 07, 2021 and September 27, 2021. The study was a randomized complete block design (rCBD) with 3 blocks. Twenty-five vegetation indices (VIs) were calculated. The analysis of variance showed significant genotypic effects on all 25 vegetation indices for both flights (p red edge (rE) from the first flight was the most significantly correlated with both pod (r = 0.44) and seed yield (r = 0.64). These results can be used to further advance organic peanut breeding efforts with high-throughput data collection.

关键词： Peanut Unmanned Aerial System Vegetation Indices Phenotyping Pod Yield Seed Yield

Comparisons of VAr model and models Created by Genetic Programming in Consumer Price Index Prediction in Vietnam

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Open Journal of Statistics 2012年第3期2卷 237-250页

作者： pham Van Khanh military Technical Academy Hanoi Vietnam

In this paper, we present an application of Genetic Programming (GP) to Vietnamese CPI in?ation one-step prediction problem. This is a new approach in building a good forecasting model, and then applying inflation forecasts in Vietnam in current stage. The study introduces the within-sample and the out-of-samples one-step-ahead forecast errors which have positive correlation and approximate to a linear function with positive slope in prediction models by GP. We also build Vector Autoregression (VAr) model to forecast CPI in quaterly data and compare with the models created by GP. The experimental results show that the Genetic Programming can produce the prediction models having better accuracy than Vector Autoregression models. We have no relavant variables (m2, ex) of monthly data in the VAr model, so no prediction results exist to compare with models created by GP and we just forecast CPI basing on models of GP with previous data of CPI.

关键词： Vector Autoregression Genetic Programming CPI Inflation Forecast

Application of solvent pH under pressurized conditions using accelerated solvent extraction and green solvents to extract phytonutrients from wild berries

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Food Bioscience 2022年第3期47卷 463-473页

作者： Amanda rajakaruna Charles F.manful Ibrahim m.Abu-reidah Amber L.Critch Natalia P.Vidal Thu H.pham mumtaz Cheema raymond Thomas School of Science and the Environment Grenfell CampusMemorial University of NewfoundlandCorner BrookA2H 5G4Canada The Functional Foods Sensory Laboratory Grenfell CampusMemorial University of NewfoundlandCorner BrookA2H 5G4Canada

Berry fruits are known as“superfoods”due to health benefits associated with the high content of bioactive compounds or *** extraction solvents are fundamentally volatile compounds acquired from non-renewable resources,i.e petroleum-based solvents are presumed to be harmful to both human health and the *** to the new emphasis on environmental and safety protections and the development of green chemistry,finding alternative solvents to replace the organic ones has recently become a major ***,there is a great interest in the scientific community to develop a suitable green approach to allow the extraction and recovery of the bioactive phytonutrients from berry sources for applications in improving human health and *** this study,the phytonutrient composition of three popular wild berries:blueberry(Vaccinium angustifolium),partridgeberry(Vaccinium vitis-idaea L.)and rosehipberry(rosa canina),were evaluated following extraction using biphasic green solvents at pH 2.5,7.0,and 11.5 under pressurized conditions using Accelerated Solvent Extraction(ASE)*** total phenolic content and composition,antioxidant activity,vitamin and mineral content of the berry extracts were evaluated using Folin-Ciocalteu assay,Ferric reducing Antioxidant Power Assay(FrAP),Ultra-High-pressure Liquid Chromatography-mass Spectrometry(UHPLC-mS)and inductively coupled plasma-mass spectrometry(ICP-mS),*** highest total antioxidant activity(p≤0.05)and phenolic content were observed in rosehip berry followed by blueberry and partridgeberry in the hydroethanolic extracts at pH ***,the highest extraction efficiency of total fat-soluble vitamins(FSV)and total B vitamins were also observed in the hydroethanolic extract at pH *** in rosehipberry and partridgeberry the highest vitamin C content was observed in hydroethanolic extract at pH 11.5,whereas in blueberry it was observed in the pH 2.5 hydroethanolic extract.I

关键词： Wild berries Accelerated solvent extraction(ASE) Hydroethanolic extracts Alkaline pH Phytonutrients

Statistical Analysis of Signal-to-Noise ratios in Fringe Pattern matching

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Statistical Analysis of Signal-to-Noise Ratios in Fringe Pat...

Gossip in the gut: Quorum sensing, a new player in the hostmicrobiota interactions

2002年第6届信号处理国际会议

作者： D T pham Z Wang m Yang m S Packianather Systems Engineenng Division School of EngineernigCardiff UniversityCardiff CF24 OYFUK Systems Engineenng Division School of EngineernigCardiff UniversityCardiff CF24 OYFUK Systems Engineenng Division School of EngineernigCardiff UniversityCardiff CF24 OYFUK Systems Engineenng Division School of EngineernigCardiff UniversityCardiff CF24 OYFUK

＜正＞ This paper presents a statistical analysis of signal-to-noise ratios （SNrs） in fringe pattern matching. It shows theoretically that the SNr of interference fringes can be significantly improved by fringe pattern matching or mean square difference calculation based on statistical analysis. Computer simulation and experimental results have confirmed that the high accuracy of fringe pattern matching is due to the significant SNr improvements achieved.

关键词： Signal-to-noise ratio precision measurement phase measurement fringe pattern matching image matching laser interferometry.

来源： cnki会议评论

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World Journal of Gastroenterology 2021年第42期27卷 7247-7270页

作者： Garance Coquant Doriane Aguanno Sandrine pham Nathan Grellier Sophie Thenet Véronique Carrière Jean-Pierre Grill Philippe Seksik Centre de recherche Saint-Antoine INSERMSorbonne UniversitéParis 75012France EPHE PSL UniversityParis 75014France Department of Gastroenterology and Nutrition Saint-Antoine HospitalAPHPParis 75012France

Bacteria are known to communicate with each other and regulate their activities in social networks by secreting and sensing signaling molecules called autoinducers,a process known as quorum sensing(QS).This is a growing area of research in which we are expanding our understanding of how bacteria collectively modify their behavior but are also involved in the crosstalk between the host and gut *** is particularly relevant in the case of pathologies associated with dysbiosis or disorders of the intestinal *** review will examine the different QS systems and the evidence for their presence in the intestinal *** will also provide clues on the role of QS molecules that may exert,directly or indirectly through their bacterial gossip,an influence on intestinal epithelial barrier function,intestinal inflammation,and intestinal *** review aims to provide evidence on the role of QS molecules in gut physiology and the potential shared by this new *** understanding the impact of intestinal bacterial social networks and ultimately developing new therapeutic strategies to control intestinal disorders remains a challenge that needs to be addressed in the future.

关键词： Inflammatory bowel disease Quorum sensing Gut microbiota Dysbiosis Inflammation Intestinal barrier

Simultaneous Quantitative Analysis of Five Components in Angelica sinensis and Angelica acutiloba Acclimatized Growing in Vietnam by High-Performance Liquid Chromatography with Photodiode Array Detector

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World Journal of Traditional Chinese medicine 2021年第1期7卷 6-10页

作者： Thi minh Tam pham Thi Thu Cuc Le Van Thanh Nguyen Viet Hung Tran Departments of microbiology Institute of Drug Quality ControlHo Chi Minh City Departments of Instrumental Analysis Institute of Drug Quality ControlHo Chi Minh City Institute of Drug Quality Control Ho Chi Minh City Faculty of Pharmacy Nguyen Tat Thanh UniversityHo Chi Minh CityVietnam

Background:Chinese Danggui(Angelica sinensis)and Japanese Danggui(Angelica acutiloba)are evaluated as the same in using and critical of quality control in Vietnamese *** Vietnam,Japanese Danggui were acclimatized and cultivated in several regions in recent *** the huge climatic difference between Vietnam and Japan,Japanese Danggui grows very well in ***,there are no studies to assess the overall quality of this medicinal *** 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 *** were performed at 30°C with a flow rate of 1.0 mL/***: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 ***:The method was successfully applied to the quantification of five markers simultaneously from collected samples.

关键词： Chlorogenic acid Danggui ferulic acid ligustilide scopoletin xanthotoxin