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Euler-type schemes for weakly coupled forward-backward stochastic differential equations and optimal convergence analysis

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Frontiers of Mathematics in China 2015年第2期10卷 415-434页

作者： Wei ZHANG weidong zhao School of Mathematics Finance Institute Shandong University Jinan 250100 China

We introduce a new Euler-type scheme and its iterative algorithm for solving weakly coupled forward-backward stochastic differential equations （FBSDEs）. Although the schemes share some common features with the ones proposed by C. Bender and J. Zhang [Ann. Appl. Probab., 2008, 18： 143-177], less computational work is needed for our method. For both our schemes and the ones proposed by Bender and Zhang, we rigorously obtain first-order error estimates, which improve the half-order error estimates of Bender and Zhang. Moreover, numerical tests are given to demonstrate the first-order accuracy of the schemes.

关键词： Weakly coupled forward-backward stochastic differential equations (FBSDEs) Euler-type scheme time discretization first-order error estimate

Insights into Nano-and Micro-Structured Scaffolds for Advanced Electrochemical Energy Storage

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Nano-Micro Letters 2024年第7期16卷 187-230页

作者： Jiajia Qiu Yu Duan Shaoyuan Li Huaping zhao Wenhui Ma weidong Shi Yong Lei Fachgebiet Angewandte Nanophysik Institut Für Physik and IMN MacroNanoTechnische Universit.t Ilmenau98693 IlmenauGermany Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Faculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093People’s Republic of China School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013People’s Republic of China School of Science and Technology Pu’er UniversityPu’er 665000People’s Republic of China

Adopting a nano-and micro-structuring approach to fully unleashing the genuine potential of electrode active material benefits in-depth understandings and research progress toward higher energy density electrochemical energy stor-age devices at all technology readiness *** to various challenging issues,especially limited stability,nano-and micro-structured(NMS)electrodes undergo fast electrochemical performance *** emerging NMS scaffold design is a pivotal aspect of many electrodes as it endows them with both robustness and electrochemical performance enhancement,even though it only occupies comple-mentary and facilitating components for the main ***,extensive efforts are urgently needed toward optimizing the stereoscopic geometrical design of NMS scaffolds to minimize the volume ratio and maximize their functionality to fulfill the ever-increasing dependency and desire for energy power source *** review will aim at highlighting these NMS scaffold design strategies,summariz-ing their corresponding strengths and challenges,and thereby outlining the potential solutions to resolve these challenges,design principles,and key perspectives for future research in this ***,this review will be one of the earliest reviews from this viewpoint.

关键词： Nano-and micro-structured Interconnected porous Scaffolds Electrode design Electrochemical energy storage

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实验在传热学课程中的应用与优化

广东化工 2024年第6期51卷 160-162页

作者：赵伟东方丽萍刘芯月李岩姚峰周雄北部湾大学石油与化工学院广西钦州535011

传热学是热力学和物理学中的一门重要学科,涉及热量和温度在物质内部和物质之间的传递和转换。在传热学的理论教学中,各高校更加关注如何提高学生的学习兴趣和学习效果,使学生更好地理解和应用传热学的相关知识。其中传热实验是启发学... 详细信息

传热学是热力学和物理学中的一门重要学科,涉及热量和温度在物质内部和物质之间的传递和转换。在传热学的理论教学中,各高校更加关注如何提高学生的学习兴趣和学习效果,使学生更好地理解和应用传热学的相关知识。其中传热实验是启发学习传热学兴趣不可或缺的一部分。文章探讨了传热学实验课的教学目标、实验内容和实验方式。分析了传热学实验课教学的现状和存在的问题,结合传热学的基本知识和应用,提出了传热学实验课应具备的教学目标,立足于实验课堂,提出了教学优化策略。

关键词：传热学传热实验实验方式教学优化

丝羽乌骨鸡SLC38A11基因分型及其与皮肤乌色度关联分析

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中国农业大学学报 2024年第7期29卷 1-11页

作者：屠云洁章明巨晓军姬改革刘一帆单艳菊邹剑敏束婧婷赵伟东郑国庆江苏省家禽科学研究所/江苏省家禽遗传育种重点实验室/农业农村部畜禽资源(家禽)评价利用重点实验室江苏扬州225125 泰和凤升农牧科技有限公司江西吉安343700

为进一步验证SLC38A11在丝羽乌骨鸡黑色素沉积中的作用,本研究采用基于飞行时间质谱分析技术对SLC38A11基因SNPs位点进行基因分型,对所有SNP位点利用Hapoview4.1进行连锁不平衡分析,并检测SNP位点是否处于H-W平衡状态,分析基因型与皮肤... 详细信息

为进一步验证SLC38A11在丝羽乌骨鸡黑色素沉积中的作用,本研究采用基于飞行时间质谱分析技术对SLC38A11基因SNPs位点进行基因分型,对所有SNP位点利用Hapoview4.1进行连锁不平衡分析,并检测SNP位点是否处于H-W平衡状态,分析基因型与皮肤亮度L*值关联性,筛选对皮肤乌色度显著相关的SNP标记。结果表明:1)SLC38A11基因4个多态性位点质谱检出率为100%,每个位点都有3种基因型。SLC38A11基因SNP1位点为错义突变,SNP2、SNP3和SNP43个SNPs位点均为同义突变。2)卡方检验表明,SNP1位点偏离H-W平衡(P0.05)。SNP1位点遗传多样性较低,其他3个SNPs位点为中度多态。3)单标记关联分析表明,SNP1位点TC基因型的胸部皮肤亮度L*值显著低于CC和TT基因型(P<0.05);SNP2位点AA基因型的胸部皮肤亮度L*值显著低于GG与GA基因型(P<0.05);SNP3位点TT基因型的胸部皮肤亮度L*值显著低于CC与CT基因型(P<0.05)。4)SNP2、SNP3和SNP4之间的强连锁产生了3种单倍型,H3H3单倍型(AATTAA基因型)胸部皮肤亮度L*值显著低于单倍型H2H3(GACTAG)和H2H1(GGCCAA)。SNP1~SNP44个位点基因型合并后,TCAATTAA胸部皮肤亮度L*值显著低于CCGGCCAA、TTGACTAG和CCGACTAG。综上,SLC38A11基因与丝羽乌骨鸡胸部皮肤乌色度密切相关,TCAATTAA基因型可作为研究丝羽乌骨鸡胸部皮肤乌色度的候选分子标记,为下一步利用分子标记辅助育种加快培育乌色度高的丝羽乌骨鸡新品种提供参考。

关键词：乌骨鸡 SLC38A11 乌色度 SNP位点连锁不平衡

泰和乌鸡蛋营养价值和小分子代谢物成分的综合分析

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食品科学 2024年第15期45卷 139-147页

作者：巨晓军章明姬改革单艳菊屠云洁刘一帆邹剑敏赵伟东郑国庆束婧婷江苏省家禽科学研究所江苏省家禽遗传育种重点实验室江苏扬州225125 泰和凤升农牧科技有限公司江西吉安343700

为了探究泰和乌鸡蛋的营养价值和小分子代谢物成分,通过与同批生产的麻黄鸡蛋进行比较,首先对泰和乌鸡蛋的外观、蛋品质和水解氨基酸含量进行分析,然后运用全局精准非靶向代谢组学方法对泰和乌鸡蛋蛋白和蛋黄的代谢物分别进行综合表征,... 详细信息

为了探究泰和乌鸡蛋的营养价值和小分子代谢物成分,通过与同批生产的麻黄鸡蛋进行比较,首先对泰和乌鸡蛋的外观、蛋品质和水解氨基酸含量进行分析,然后运用全局精准非靶向代谢组学方法对泰和乌鸡蛋蛋白和蛋黄的代谢物分别进行综合表征,筛选泰和乌鸡蛋的标志性代谢物。结果显示,泰和乌鸡蛋外型小于麻黄鸡蛋,小头尖,大部分蛋壳表面有黑斑沉积。泰和乌鸡蛋质量、蛋黄色泽、蛋黄质量、蛋黄比率显著低于麻黄鸡蛋(P1),其中有32个代谢物相对含量高于麻黄鸡蛋,19个代谢物相对含量低于麻黄鸡蛋,这些差异物质主要富集在氨基酸代谢途径,其中丙氨酸、天冬氨酸和谷氨酸代谢途径的富集程度最显著且影响因子最大;蛋白中含量差异较大、影响较大的代谢物有硬脂酰胺、花生四烯酸、L-赖氨酸、L-天冬氨酸等,它们可作为鉴别泰和乌鸡蛋潜在的标志性代谢物。泰和乌鸡蛋黄中差异代谢物相对较少,仅有33个且在代谢物分类中比较分散,蛋黄中含量差异较大、影响较大的代谢物有3-氨基-4-甲基戊酸、亚氨基精氨酸、D-葡萄糖,可作为鉴别泰和乌鸡蛋潜在的标志性代谢物。本研究结果可为泰和乌鸡蛋的推广和食品开发提供基础数据支持。

关键词：泰和乌鸡蛋蛋品质水解氨基酸全局精准非靶向代谢组学

Revisiting GM-CSF as an adjuvant for therapeutic vaccines

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Cellular & Molecular Immunology 2018年第2期15卷 187-189页

作者： weidong zhao Gan zhao Bin Wang Key Laboratory of Medical Molecular Virology of the Ministry of Health and Ministry of Education School of Basic Medical SciencesFudan UniversityShanghai200032China Department of Laboratory Medicine Clinical Medicine CollegeDali UniversityDali 200032China. PhD Key Laboratory of Medical Molecular Virology of the Ministry of Health and Ministry of EducationSchool of Basic Medical SciencesFudan University131 Dong An RoadShanghai200032China

Granulocyte macrophage colony stimulating factor(GM-CSF)is generally considered to be a proinflammatory cytokine;GM-CSF-based vaccines have been shown to elicit potent antitumor and antiviral immune responses in preclinical *** clinical trials,however,these effects were not as robust and sometimes even contradicted the findings from animal *** this commentary,we aim to discuss the latest advances in this field,hoping that an upto-date and comprehensive understanding of this molecule will help others design effective GM-CSF-based strategies for antiviral and anticancer vaccines.

关键词： vaccines clinical stimulating

Finite Element Methods for Nonlinear Backward Stochastic Partial Differential Equations and Their Error Estimates

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Advances in Applied Mathematics and Mechanics 2020年第6期12卷 1457-1480页

作者： Xu Yang weidong zhao School of Mathematics China University of Mining and TechnologyXuzhouJiangsu 221116China School of Mathematics Shandong UniversityJinanShandong 250100China

In this paper,we consider numerical approximation of a class of nonlinear backward stochastic partial differential equations(BSPDEs).By using finite element methods in the physical space domain and the Euler method in the time domain,we propose a spatial finite element semi-discrete scheme and a spatio-temporal full discrete scheme for solving the *** of the schemes are rigorously analyzed and theoretical error estimates with convergence rates are obtained.

关键词： Backward stochastic partial differential equations finite element method error estimate.

听神经瘤术后早期前庭症状特征及影响因素分析

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中国眼耳鼻喉科杂志 2024年第2期24卷 96-100页

作者：张娜吴沛霞李文妍郝维明赵卫东席淑新复旦大学护理学院上海200032 复旦大学附属眼耳鼻喉科医院耳鼻喉科上海200031 复旦大学附属眼耳鼻喉科医院医务部上海200031

目的通过收集听神经瘤患者术前前庭功能检查及术后早期前庭症状表现,探究听神经瘤患者术后早期前庭功能特点及相关影响因素。方法研究纳入64例在2021年2月—2022年2月期间接受肿瘤切除治疗的单侧听神经瘤患者。分别于术后1 d、3 d、7 d... 详细信息

目的通过收集听神经瘤患者术前前庭功能检查及术后早期前庭症状表现,探究听神经瘤患者术后早期前庭功能特点及相关影响因素。方法研究纳入64例在2021年2月—2022年2月期间接受肿瘤切除治疗的单侧听神经瘤患者。分别于术后1 d、3 d、7 d、30 d记录患者前庭症状类型,并使用前庭症状相关视觉模拟量表(VAS-V)对前庭症状的严重程度进行评价。根据术后30 d VAS-V评分中位数(VAS-V评分中位数=2)将患者分为前庭症状缓解组(VAS-V≤2)和前庭症状存续组(VAS-V>2)。比较2组患者的人口学信息、Koos分级、术前前庭功能检查结果的差异;构建二元logistic回归模型探索术后早期前庭症状存续的影响因素。结果听神经瘤术后第3天前庭症状表现最明显;术后7~30 d,没有明显变化;术后30 d以头晕和姿势不稳为主,分别有33例(51.6%)和31例(48.4%)。二元logistics回归分析显示,视频头脉冲试验(vHIT)增益正常(OR=4.06,P=0.039)、冷热试验单侧减弱(UW)<75%(OR=12.45,P=0.001)、女性(OR=0.22,P=0.038)是术后30 d前庭症状存续的独立风险因素。结论术前前庭功能、性别是预测听神经瘤患者术后前庭症状的重要因素,且术前前庭功能损伤程度与术后前庭症状存续时间呈负相关,有助于为听神经瘤患者术后早期前庭功能恢复情况提供参考。

关键词：听神经瘤前庭症状单侧前庭功能损伤

Magnetic NiFe_(2)O_(4)@FeNi_(3)core-shell nanospheres derived from FeNi-LDH precursor anchoring on rGO nanosheets for enhanced electromagnetic wave absorption

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Journal of Materials Science & Technology 2024年第4期171卷 101-114页

作者： Kunyao Cao Yuan Fang Shuai Wang Yue Zhang Jiayue Wen Jun Chen Rui zhao weidong Xue School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 610054China

Graphene has been extensively utilized in the domain of electromagnetic wave(EMW)absorption ma-terials because of its excellent electrical ***,the inferior impedance matching per-formance and the single loss mechanism vastly restrict the ***,it’s an effective strat-egy to solve these issues by introducing magnetic ***,layer double hydroxide(LDH)is an appropriate template to obtain magnetic component *** that ferromagnetic met-als such as Fe,Co,Ni,and their corresponding metal oxides are usually treated as magnetic compo-nents which are promising candidates for EMW absorption ***,in this work,a FeNi-layered double hydroxide-reduced graphene oxide(FeNi-LDH-rGO)aerogel was synthesized through a series of processes such as electrostatic self-assembly,hydrothermal,freeze-drying,and *** magnetic NiFe_(2)O_(4)@FeNi_(3)core-shell nanospheres were obtained from FeNi-LDH precursor,anchoring on rGO nanosheets after the annealing ***,the effects of different mass ratios of LDH to GO as well as different annealing temperatures of LDH-rGO aerogel on the EMW absorption prop-erty and impedance matching performance were *** a consequence,the fabricated ultralight 600LDH-rGO 2:1 aerogel shows a broad effective absorption bandwidth(EAB)of 7.04 GHz at a thickness of 2.3 mm with a low filling content of only 6 wt%and a low density of 4.4 mg/cm^(3).In conclusion,the synthetic LDH-rGO aerogels offer an effective strategy for preparing EMW absorption materials that own three-dimensional porous network structure and unique magnetic NiFe_(2)O_(4)@FeNi_(3)core-shell struc-ture nanospheres.

关键词： Electrostatic self-assembly Electromagnetic wave absorption LDH-rGO aerogel Layered double hydroxide Reduced graphene oxide NiFe_(2)O_(4)@FeNi_(3)core-shell structure