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Oxidation behavior of Al0.2CoCrFeNi high-entropy alloy film in supercritical water environment

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Rare Metals 2022年第4期41卷 1217-1222页

作者： bao-Hong zhu Hao-Chen Qiu wei Jiang Qing-He Yu GRIMAT Engineering Institute Co. LtdBeijing 101407China General Research Institute for Nonferrous Metals Beijing 100088China National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy GRINM Group Co.Ltd.Beijing 100088China

The corrosion resistance of Al0.2CoCrFeNi high-entropy alloy(HEA) film deposited by magnetron sputtering was investigated and compared with that of Al0.2 CoCrFeNi HEA bulk and G115 *** HEA film is composed of face-centered cubic with nanoscale grain *** HE As(film and bulk) exhibit higher electro-chemical corrosion resistance than the G115 alloy in 3.5 wt% NaCl solution.

关键词： alloy corrosion resistance

Transport of velocity alignment particles in random obstacles

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Chinese Physics B 2018年第8期27卷 164-169页

作者： wei-jing zhu Xiao-qun Huang bao-quan Ail Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials School of Physics and Telecommunication EngineeringSouth China Normal University Basic Teaching Department Neusoft Institute Guangdong

We numerically investigate the trapping behaviors of aligning particles in two-dimensional （2D） random obstacles system. Under the circumstances of the effective diffusion rate and the average velocity tend to zero, particles are in trapped state. In this paper, we examine how the system parameters affect the trapping behaviors. At the large self-propelled speed, the ability of nematic particles escape from trapping state is enhancing rapidly, in the meanwhile the polar and free particles are still in trapped state. For the small rotation diffusion coefficient, the polar particles circle around （like vortices） the obstacles and here particles are in trapped state. Interestingly, only the partial nematic particles are trapped in the confined direction and additional particles remain flowing. In the free case, the disorder particle-particle collisions impede the motion in each other＇s directions, leading the free particles to be trapped. At the large rotation diffusion coefficient, the ordered motion of aligning particles disappear, particles fill the sample evenly and are self-trapped around obstacles. As the particles approach the trapping density due to the crowding effect the particles become so dense that they impede each other＇s motion. With the increasing number of obstacles, the trajectories of particles are blocked by obstacles, which obstruct the movement of particles. It is worth noting that when the number of the obstacles are large enough, once the particles are trapped, the system is permanently absorbed into a trapped state.

关键词： Brownian motion self-propelled particles stochastic processes

柔性基础非线性能量阱隔振系统动力学特性分析

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船舶力学 2025年第1期29卷 145-155页

作者：陈森朱翔李天匀陈树鑫戴维华中科技大学船舶与海洋工程学院武汉430074 华中科技大学船舶和海洋水动力湖北省重点实验室武汉430074 上海交通大学高新船舶与深海开发装备协同创新中心上海200240

针对舰船等工程领域低频线谱控制难题,建立考虑柔性基础的非线性能量阱隔振系统动力学模型,利用谐波平衡法和Runge-Kutta法分析系统的非线性动力学特性。探讨基础参数对系统幅频特性的影响,并分析系统在共振频率处的非线性动力学行为。... 详细信息

针对舰船等工程领域低频线谱控制难题,建立考虑柔性基础的非线性能量阱隔振系统动力学模型,利用谐波平衡法和Runge-Kutta法分析系统的非线性动力学特性。探讨基础参数对系统幅频特性的影响,并分析系统在共振频率处的非线性动力学行为。以振动功率流为评价参数,探讨非线性能量阱质量比、立方刚度、阻尼对减振效果的影响规律。针对本文计算模型的研究表明:当基础刚度较弱时,非线性能量阱对设备的幅频响应特性影响较大;对于特定的参数,基础和设备在一阶共振频率处的运动状态可能是不同的;非线性能量阱减振效果良好,在本算例中传递到基础的功率流峰值降低了13.95 dB。

关键词：柔性基础非线性能量阱谐波平衡法振动功率流

Spireoside Controls Blast Disease by Disrupting Membrane Integrity of Magnaporthe oryzae

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Rice science 2025年第1期32卷 107-117,I0061-I0066页

作者： XU Liting HE Kaiwei GUO Chunyu QUAN Cantao MA Yahuan ZHANG wei REN Lifen WANG Long SONG Li OUYANG Qing YIN Junjie zhu Xiaobo TANG Yongyan HE Min CHEN Xuewei LI weitao State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Rice Research InstituteSichuan Agricultural UniversityChengdu 611130China

The application of fungicides is an effective strategy for controlling plant *** these agents,plant-derived antifungal metabolites are particularly promising due to their eco-friendly and sustainable *** secondary metabolites typically exhibit broad-spectrum antifungal activity without selective toxicity against ***,only a small fraction of antifungal metabolites have been identified from the tens of thousands of known plant secondary *** this study,we conducted a metabolomic analysis on both blast-resistant(Digu)and-susceptible(Lijiangxintuanheigu)rice varieties to uncover novel metabolites that enhance blast *** found that 24 and 48 h post-inoculation with Magnaporthe oryzae were critical time points for metabolomic profiling,based on the infected status of *** in rice and the observed differences in shikimate accumulation between the two *** metabolomic analysis,we identified nine flavonoids that were differentially accumulated and are considered potential candidates for disease *** these,apigenin-7-glucoside,rhamnetin,and spireoside were found to be effective in controlling blast disease,with spireoside demonstrating the most pronounced *** discovered that spireoside controlled blast disease by inhibiting both spore germination and appressorium formation in ***,primarily through disrupting cell membrane ***,spireoside did not induce rice ***,spireoside was also effective in controlling sheath blight ***,spireoside shows considerable promise as a candidate for the development of a fungicide for controlling plant diseases.

关键词： appressorium formation blast disease membrane integrity resistance spireoside spore germination sheath blight disease

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近红外光谱在心脏术后的应用进展

中国急救医学 2025年第1期45卷 82-85页

作者：李辰周炜朱峰同济大学附属东方医院重症医学科上海200120

在心脏重症监护病房中,准确评估组织的氧合状态对于降低发病率和病死率至关重要。目前,临床主要依赖混合静脉氧饱和度、心输出量及血气分析等有创性手段评估患者的氧合情况。然而,传统的监测方法往往受干扰因素较多,并不准确。近红外光... 详细信息

在心脏重症监护病房中,准确评估组织的氧合状态对于降低发病率和病死率至关重要。目前,临床主要依赖混合静脉氧饱和度、心输出量及血气分析等有创性手段评估患者的氧合情况。然而,传统的监测方法往往受干扰因素较多,并不准确。近红外光谱(near-infrared spectroscopy,NIRS)技术的出现提供了新的解决方案。作为一种连续、无创的监测方法,NIRS能够准确评估局部组织的氧饱和度,为心脏重症监护提供新视角。这项技术不仅广泛应用于心脏手术中的脑血氧饱和度监测,还成功应用于肾脏和骨骼肌的血氧饱和度监测。本研究将对NIRS在心脏外科术后脑、肾脏和骨骼肌血氧监测中的应用情况进行综述,通过早期评估病情,帮助临床医生更准确判断患者的氧合状态,从而制定更为有效的治疗方案。

关键词：近红外光谱心脏外科术后局部氧饱和度脑肾脏骨骼肌

曲美他嗪对稳定型心绞痛治疗效果的Meta分析

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中国循证心血管医学杂志 2013年第6期5卷 573-577页

作者：彭松方奇方冬魏宝柱张涛万静武汉大学中南医院心内科武汉430071

目的系统评价曲美他嗪对稳定型心绞痛(SAP)患者的治疗效果。方法检索Cochrane Central Register of Contronlled Trials、MEDLINE、EMbase、Pubmed、中国知网、万方数据库中关于曲美他嗪对稳定型心绞痛患者干预治疗的随机对照试验(RCT)... 详细信息

目的系统评价曲美他嗪对稳定型心绞痛(SAP)患者的治疗效果。方法检索Cochrane Central Register of Contronlled Trials、MEDLINE、EMbase、Pubmed、中国知网、万方数据库中关于曲美他嗪对稳定型心绞痛患者干预治疗的随机对照试验(RCT),同时追溯纳入文献的参考文献,检索时限均为从建库到2012年12月。对纳入研究的质量进行严格评价和资料提取,对符合质量标准的RCT进行Meta分析。统计学分析采用RevMan5.2软件。结果共纳入11个RCT,共收集了1683例SAP患者的资料。Meta分析显示:加用曲美他嗪对SAP患者的疗效与单纯常规抗心绞痛治疗的比较,每周心绞痛发作次数(WMD=-1.65,95%CI:-2.27^-1.03)、每周硝酸甘油消耗量(WMD=-0.90,95%CI:-1.14^-0.66)、心电图改善(WMD=1.33,95%CI:1.16~1.52)、运动试验中使ST段压低1 mm的阈值(WMD=58.67,95%CI:45.38~71.96)、ST段最大压低幅度(WMD=-0.29,95%CI:-0.40^-0.19)、运动持续时间(WMD=62.04,95%CI:42.87~81.21)6方面,其差异均有统计学意义。结论对于SAP患者,在常规治疗心绞痛药物的基础上,加用曲美他嗪可进一步提高治疗的效果疗效。

关键词：曲美他嗪稳定型心绞痛随机对照试验系统评价 Meta分析

研究型综合化学实验:扭热制冷高分子纤维的研究

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高分子通报 2025年第1期38卷 146-156页

作者：鲍丽丽赵维强刘遵峰周湘中国药科大学理学院南京611189 南开大学化学学院天津300071

将科研前沿成果引入到综合化学实验的设计中,设计了面向化学专业的创新综合实验:高强韧离子导电水凝胶纤维的制备与性能研究,合成2-acrylamido-2-methylpropanesulfonic acid-N,N-dimethylacrylamide-poly(ethylene glycol)diacrylate(AMPS-DMAPAA-PEGDA)水凝胶并进行了纤维的制备、结构表征及性能研究。本实验涉及有机合成、凝胶纤维材料的表征及应用相关知识,适合作为高年级本科生的研究型综合化学实验,有助于激发学生的研究兴趣和培养学生的科研思维。

关键词：创新综合实验水凝胶纤维交联网络科研指导自教学改革

High-throughput screening of high energy density LiMn1-xFexPO4via active learning

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Chinese Chemical Letters 2025年第2期36卷 504-508页

作者： Qingyun Hu wei Wang Junyuan Lu He zhu Qi Liu Yang Ren Hong Wang Jian Hui School of Materials Science and Engineering Shanghai Jiao Tong University Zhang Jiang Institute for Advanced Study Shanghai Jiao Tong University Department of Physics City University of Hong Kong Herbert Gleiter Institute of Nanoscience School of Materials Science and EngineeringNanjing University of Science and Technology Shenzhen Research Institute City University of Hong Kong

Lithium-ion batteries （LiBs） with high energy density have gained significant popularity in smart grids and portable ***1-xFexPO4（LMFP） is considered a leading candidate for the cathode,with the potential to combine the low cost of Li Fe PO4（LFP） with the high theoretical energy density of LiMnPO4（LMP）.However,quantitative investigation of the intricate coupling between the Fe/Mn ratio and the resulting energy density is challenging due to the parametric *** is crucial to develop a universal approach for the rapid construction of multi-parameter *** this work,we propose an active learning-guided high-throughput workflow for quantitatively predicting the Fe/Mn ratio and the energy density mapping of *** optimal composition (LiMn0.66Fe0.34PO4) was effectively screened from 81 cathode materials via only 5 ***-guided electrochemical analysis revealed a nonlinear relationship between the Fe/Mn ratio and electrochemical properties,including ion mobility and impedance,elucidating the quantitative chemical composition-energy density map of *** results demonstrated the efficacy of the method in high-throughput screening of LiBs cathode materials.

关键词： Cathode material High-throughput screening Machine learning Performance optimization Quantitative map

LOCAL ARTIFICIAL BOUNDARY CONDITIONS FOR THEINCOMPRESSIBLE VISCOUS FLOW IN A SLIP CHANNEL

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Journal of Computational Mathematics 1997年第4期15卷 335-344页

作者： wei-zhu bao Hou-de Han (Department of Applied Mathematics, Tsinghua University, Beijing, China) 清华大学应用数学系北京

In this paper we consider numerical simulation of incompressible viscous flow in a infinite slip channel. Local artificial boundary conditions at an artificial boundary are derived by the continuity of velocity and normal stress at the segment artificial boundary. The the original problem is reduced to a boundary value problem on a bounded computational domain. Numerical example shows that our artificial boundary conditions are very effective.

关键词： Boundary value problems Computational methods Computer simulation Navier Stokes equations Numerical methods Viscous flow