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Robust Cross-Linked Na_(3)V_(2)(pO_(4))_(2)F_(3) Full Sodium-Ion Batteries

Energy & Environmental Materials 2024年第1期7卷 9-20页

作者： Jinqiang Gao Ye Tian Lianshan Ni Baowei Wang Kangyu Zou Yingchang Yang Ying Wang Craig E.banks Dou Zhang Kechao Zhou Huan Liu Wentao Deng Guoqiang Zou Hongshuai Hou Xiaobo Ji College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China College of Material and Chemical Engineering Tongren UniversityTongren 554300China Department of Chemistry The Chinese University of Hong KongShatinN.T.Hong Kong S.A.R.China Faculty of Science and Engineering Manchester Metropolitan UniversityManchester UK State Key Laboratory of powder Metallurgy Central South UniversityChangsha 410083China School of Materials Science and Engineering Hunan Provincial Key Lab of Advanced Materials for New Energy Storage and ConversionHunan University of Science and TechnologyXiangtan 411201China School of Materials and Engineering Zhengzhou UniversityZhengzhou 450001China

Sodium-ion batteries(SIBs)have rapidly risen to the forefront of energy storage systems as a promising supplementary for Lithium-ion batteries(LIBs).Na_(3)V_(2)(pO_(4))_(2)F_(3)(NVpF)as a common cathode of SIBs,features the merits of high operating voltage,small volume change and favorable specific energy ***,it suffers from poor cycling stability and rate performance induced by its low intrinsic ***,we propose an ingenious strategy targeting superior SIBs through cross-linked NVpF with multi-dimensional nanocarbon frameworks composed of amorphous carbon and carbon nanotubes(NVpF@C@CNTs).This rational design ensures favorable particle size for shortened sodium ion transmission pathway as well as improved electronic transfer network,thus leading to enhanced charge transfer kinetics and superior cycling *** from this unique structure,significantly improved electrochemical properties are obtained,including high specific capacity(126.9 mAh g^(-1)at 1 C,1 C=128 mA g^(-1))and remarkably improved long-term cycling stability with 93.9%capacity retention after 1000 cycles at 20 *** energy density of 286.8 Wh kg^(-1)can be reached for full cells with hard carbon as anode(NVpF@C@CNTs//HC).Additionally,the electrochemical performance of the full cell at high temperature is also investigated(95.3 mAh g^(-1)after 100 cycles at 1 C at 50℃).Such nanoscale dual-carbon networks engineering and thorough discussion of ion diffusion kinetics might make contributions to accelerating the process of phosphate cathodes in SIBs for large-scale energy storages.

关键词： dual-nanocarbon networks full sodium-ion battery ion transfer kinetics Na_(3)V_(2)(pO_(4))_(2)F_(3) NASICON structure

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Lean body mass index is a marker of advanced tumor features in patients with hepatocellular carcinoma

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World Journal of Hepatology 2024年第3期16卷 393-404页

作者： Andrew Scott deLemos Jing Zhao Milin patel banks Kooken Karan Mathur Hieu Minh Nguyen Areej Mazhar Maggie McCarter Heather Burney Carla Kettler Naga Chalasani Samer Gawrieh Department of Medicine Atrium HealthCharlotteNC 28204United States Center for Outcomes Research and Evaluation Atrium HealthCharlotteNC 28204United States Department of Medicine Indiana University School of MedicineIndianapolisIN 46202United States Center for Health System Sciences(CHASSIS) Atrium HealthCharlotteNC 28204United States Department of Medicine Northwestern University Feinberg School of MedicineChicagoIL 60611United States Department of Biostatistics and Health Data Science Indiana University School of MedicineIndianapolisIN 46202United States Department of Gastroenterology and Hepatology Indiana University School of MedicineIndianapolisIN 46202United States

BACKGROUND Obesity is an independent risk factor for the development of hepatocellular carcinoma(HCC)and may influence its ***,after diagnosis of HCC,like other malignancies,the obesity paradox may exist where higher body mass index(BMI)may in fact confer a survival *** is frequently observed in patients with advanced HCC and cirrhosis,who often present late with advanced tumor features and cancer related weight *** To explore the relationship between BMI and survival in patients with cirrhosis and *** This is a retrospective cohort study of over 2500 patients diagnosed with HCC between 2009-2019 at two United States academic medical *** and tumor characteristics were extracted manually from medical records of each institutions'cancer *** were stratified according to BMI classes:30 kg/m^(2)(obese).patient and tumor characteristics were compared according to BMI *** performed an overall survival analysis using Kaplan Meier by the three BMI classes and after adjusting for Milan criteria.A multivariable Cox regression model was then used to assess known risk factors for survival in patients with cirrhosis and *** A total of 2548 patients with HCC were included in the analysis of which 11.2%(n=286)were classified as *** three main BMI categories:Lean(n=754),overweight(n=861),and obese(n=933)represented 29.6%,33.8%,and 36.6%of the total population *** each BMI class,the non-cirrhotic patients accounted for 15%(n=100),12%(n=94),and 11%(n=92),*** patients with a BMIpatients with cirrhosis and HCC,654(29%)were lean,767(34%)were overweight,and 841(37%)were *** three BMI classes did not differ by age,MELD,or Child-pugh *** hepatitis C was the dominant etiology in lea

关键词： Hepatocellular carcinoma Cirrhosis Obesity Body mass index class Sarcopenia Chronic hepatitis C

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一所城市教学医院内急性胰腺炎影像学检查使用趋势及其相关病人结果的独立预后因素评价的分析

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国际医学放射学杂志 2011年第2期 171-171页

作者： K.J.Mortele I.K.Ip B.U.Wu D.L.Conwell p.a.banks R.Khorasani 胡娟 Center for Evidence Based Imaging Brigham and Women's HospitalHarvard Medical School

目的评价急性胰腺炎病人(Ap)使用放射检查方法的趋势和评估放射学方法作为病人转归结果的独立预测因子的可能性。材料与方法本研究符合HIpAA要求,经伦理委

关键词：急性胰腺炎病人检查次数

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偶尔朋友

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初中生 2024年第11期 45-49页

作者： Heather Lynne banks Luke(编译) 不详

朋友之间相互尊重、相互欣赏,彼此会觉得很舒服。如果有的朋友总是向你发泄负面情绪,我们是应该迁就还是包容呢?面对这样的情况,露西是如何处理的?露西扫视一圈自助餐厅,努力让自己不要惊慌。这是她在新学校上学的第一天。她不知道该和... 详细信息

朋友之间相互尊重、相互欣赏,彼此会觉得很舒服。如果有的朋友总是向你发泄负面情绪,我们是应该迁就还是包容呢?面对这样的情况,露西是如何处理的?露西扫视一圈自助餐厅,努力让自己不要惊慌。这是她在新学校上学的第一天。她不知道该和谁坐在一起。

关键词：负面情绪相互尊重自助餐厅相互欣赏朋友学校

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Cellular automata modelling of austenite grain coarsening during reheating——I. Normal grain coarsening

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Journal of University of Science and Technology Beijing 2004年第6期11卷 517-523页

作者： WanhuaYU E.J.palmiere S.p.banks JingtaoHan MaterialsScienceandEngineeringSchool UniversityofScienceandTechnologyBeijingBeijing100083China DepartmentofEngineeringMaterials UniversityofSheffieldSheffieldS13JDUK DepartmentofAutomaticControlandSystemsEngineering UniversityofSheffieldSheffieldS13JDUK

A two-dimensional cellular automaton (CA) model has been developed for thedescription of the normal grain coarsening process. The probabilistic CA method incorporatingMoore's definition of the neighbourhood is used to simulate the normal grain coarsening process witha new transition rule. The model simulates the grain coarsening process in as much detail that ispossible, from the point of initial nucleation to subsequent coarsening with computational *** unique result is that the grain coarsening speed can be controlled by the specific method, thisresult is vital to model the grain coarsening quantitatively. In order to make this model valid,experimental work has been done to provide solid evidence for this model. Comparison of themodelling result and the experimental result has been carried out.

关键词： computer simulation grain growth microstructure reheating

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Cellular automata modelling of grain coarsening during reheating——Ⅱ. Abnormal grain growth

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Journal of University of Science and Technology Beijing 2005年第1期12卷 26-32页

作者： WanhuaYu E.J.palmiere S.p.banks JingtaoHan DepartmentofMaterialsEngineering UniversityofScienceandTechnologyBeijingBeijing100083China DepartmentofEngineeringMaterials UniversityofSheffieldS13JDSheffieldUK DepartmentofAutomaticControlandSystemsEngineering UniversityofSheffieldS13JDSheffieldUK

The 2-dimensional cellular automata (CA) simulation technique has been utilized to investigate the abnormal grain coarsening. The growth of abnormal grains is modelled under this assumption that different grains have different boundary energies and boundary mobilities. As temperature increases, some grains may first get rid of the particle pinning effect. Thus a high probability is obtained for atoms to jump over the boundary, so that they can consume other primary retained grains quickly. From the simulation, the characteristics of the abnormal grain coarsening under different conditions are demonstrated successfully. An experiment has also been carried out to reflect the abnormal grain coarsening on the microalloy steel. Simulation results are quite close to the experimental evidence.

关键词： computer simulation grain growth microstructure reheating

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Nonlinear optimal control of rotating flexible shaft in active magnetic bearings

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Science China(Technological Sciences) 2011年第5期54卷 1084-1094页

作者： G. S. TOMBUL S. p. banks Department of Automatic Control & Systems Engineering The University of Sheffield

The optimal control of nonlinear systems has been studied for years by many researchers. However, the application of optimal control problem to nonlinear non-affine systems needs more attention. In this paper we propose an optimal control design technique for a class of nonlinear and control non-affine equations. The dynamic equations of a flexible shaft supported by a pair of active magnetic bearings (AMBs) are used as the nonlinear control non-affine equations. Mathematical model for the flexible beam is chosen to be the well known Timoshenko beam model, which takes rotary inertia and shear deformations into account, and it is assumed that the shaft is supported by two frictionless bearings at the ends. The effective control of such systems is extremely important for very high angular velocity shafts which are a feature of many modern machines. The control must be able to cope with unbalanced masses and hence be very robust. We shall approach the problem by discretising the Timoshenko beam model and using standard difference formulae to develop a finite-dimensional model of the system. Then we use a recently developed technique for controlling nonlinear systems by reducing the problem to a sequence of linear time-varying (LTV) systems. An optimal control designed for each approximating linear, time-varying system and recent results show that this method will converge uniformly on compact time intervals to the optimal solution.

关键词： approximation technique nonlinear optimal control timoshenko beam active magnetic bearings

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On Exact Conservation for the Euler Equations with Complex Equations of State

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Communications in Computational physics 2010年第10期8卷 995-1015页

作者： J.W.banks Center for Applied Scientific Computing Lawrence Livermore National LaboratoryLivermoreCA 94551USA

Conservative numerical methods are often used for simulations of fluid flows involving shocks and other jumps with the understanding that conservation guarantees reasonable treatment near *** is true in that convergent conservative approximations converge to weak solutions and thus have the correct shock ***,correct shock location results from any discretization whose violation of conservation approaches zero as the mesh is *** we investigate the case of the Euler equations for a single gas using the Jones-Wilkins-Lee(JWL)equation of *** show that a quasi-conservative method can lead to physically realistic solutions which are devoid of spurious pressure ***,we demonstrate that under certain conditions,a quasi-conservative method can exhibit higher rates of convergence near shocks than a strictly conservative counterpart of the same formal order.

关键词： Euler equations complex EOS JWL EOS Godunov methods

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The response of a semisubmersible model under focused wave groups: Experimental investigation

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Journal of Ocean Engineering and Science 2017年第3期2卷 161-171页

作者： Michael banks Nagi Abdussamie National Centre for Maritime Engineering and Hydrodynamics Australian Maritime CollegeUniversity of TasmaniaLauncestonTAS 7250Australia

In recent years,extreme wave events have occurred more frequently than have been predicted using theoretical *** is,therefore,a requirement to investigate the impact of these events on coastal and offshore *** paper reports on results of an experimental investigation into the interaction between unidirectional waves and a horizontally moored semisubmersible *** target crest height was created at a focal point and time using the focused wave *** values of wave steepness were tested in order to ascertain the nonlinear effects on the quality of waves generated by a piston-type *** measured crest height was in good agreement with the theoretical one within 4%relative *** magnitudes of heave and pitch motions of the model were found to increase as the wave steepness ***,the paper contributes towards establishing the application of focused wave technique to floating offshore platforms.

关键词： Focused wave Offshore platforms Dynamic response

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CELLULAR AUTOMATA MODELLING OF GRAIN COARSENING DURING REHEATING AND VALIDATION WITH THE EXpERIMENTAL RESULTS

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Acta Metallurgica Sinica(English Letters) 2005年第2期18卷 113-120页

作者： W.H.Yu E.J.palmiere S.p.banks J.T.Han SchoolofMaterialsScienceandEngineering UniversityofScienceandTechnologyBeijingBeijing100083China DepartmentofEngineeringMaterials UniversityofSheffieldSheffieldS13JDUK DepartmentofAutomaticControlandSystemsEngineering UniversityofSheffieldSheffieldS13J-DUK

A novel 2D cellular automata (CA) model has been developed for description of normal grain coarsening and abnormal grain coarsening process. The program reflects the grain coarsening quite well even through the average grain size becomes very large. Follow results have been obtained: (a) The model reflect the normal grain growth kinetics gradually increase with probability and grain growth speed can be controlled. Based on this result, temperature can be coupled in the model. (b) Abnormal grain growth is modelled successfully. (c) Methodology has been put forward to find the relationship between the experiment results and modelling results. The experimental work on the grain coarsening has been carried out. Graphical output matched the realistic microstructure in every detail. Because many physical parameters can be taken into account in the CA programme, this CA model could not only qualitatively demonstrate the grain growth process, but also quantitatively predict and analyse the grain coarsening process.

关键词： computer simulation grain growth microstructure reheating

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