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基于层状双氢氧化物前驱体的CO_(2)甲烷化NiAlNd催化剂

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无机化学学报 2024年第8期40卷 1592-1602页

作者：程菁琳郭晓明孟涛胡旭李亮王彦哲黄文珠上海应用技术大学化学与环境工程学院上海201418

采用乙二醇溶剂热法合成了一系列基于层状双氢氧化物前驱体(LDHs)的NiAlNd催化剂。Nd的引入大大提高了CO_(2)甲烷化的低温催化活性。在T=210℃,WHSV(weight hourly space velocity)=24000 mL·g^(-1)·h^(-1),p=100 kPa的条件下,NiAlNd-0.4催化剂上CO_(2)转化率达到83.9%。Nd^(3+)取代部分Al^(3+)阻碍了前驱体中LDHs结构的形成,同时也减小了焙烧后催化剂的粒径。Nd的加入削弱了NiO与Al_(2)O_(3)之间的相互作用,促进了NiO的还原,提高了Ni的本征活性。此外,Nd的添加提高了催化剂表面碱性位的数目,从而增强了对CO_(2)的吸附。随着Nd掺杂量的增加,还原后的催化剂中金属Ni的表面积呈火山形变化。Ni活性位的数目和本征活性同时影响NiAlNd催化剂的催化活性。

关键词： CO_(2)甲烷化层状双氢氧化物 NiAl催化剂 Nd 活性位

Research progress on bulk nanobubbles

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Particuology 2022年第1期20卷 99-106页

作者： Le Sun Fenghua Zhang xiaoming guo Zhengming Qiao Yi Zhu Nuo Jina Yan Cui Weimin Yang College of Mechanical and Electrical Engineering Beijing University of Chemical TechnologyBeijing 100029China Preparation Office of Zhangzhou Base of National Marine Technology Center Xiamen 361007China

There are still fundamental problems lying in the basic research of bulk *** the bulk nanobubbles reported in the literature nano scale bubbles or contaminants in fact?At present,there is not yet sufficient experimental evidence to show that the bulk nanoparticles are only gas bubbles but not other nano scale *** they are indeed nanobubbles,what causes the bulk nanobubbles observed in the literature to be much more stable than being predicted by the Epstein-Plesset theory?This paper firstly discusses the contradiction between the traditional theory prediction and the observed lifetime of the bulk nanobubbles,and then discusses whether the so-called nanobubbles are gas *** review the existing typical models,and the influence of different conditions on the stability of bulk nanobubbles,for paving the road to a clear understanding of the stability mechanism of bulk *** addition,the representative production methods and characterization methods of bulk nanobubbles are discussed in order to offer some guidance to their wide range of commercial applications.

关键词： Bulk nanobubbles Nano scale contaminants Typical model Stability mechanism

老年结核病患者家庭照顾者照护能力现状及其影响因素

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国际老年医学杂志 2024年第2期45卷 210-214页

作者：郭晓铭杨风勤宋凯琳邓钰吴星新疆医科大学护理学院乌鲁木齐830000 新疆医科大学第八附属医院护理部乌鲁木齐830054 新疆医科大学第八附属医院呼吸科乌鲁木齐830054 新疆医科大学第七附属医院办公室乌鲁木齐832000

目的调查老年结核病患者家庭照顾者照护能力的现状并对影响因素进行分析。方法采用便利抽样方法,选取2022年5—8月新疆医科大学第八附属医院呼吸病区的360名家庭照顾者作为研究对象,采用家庭照顾者一般资料调查、家庭照顾者照护能力量... 详细信息

目的调查老年结核病患者家庭照顾者照护能力的现状并对影响因素进行分析。方法采用便利抽样方法,选取2022年5—8月新疆医科大学第八附属医院呼吸病区的360名家庭照顾者作为研究对象,采用家庭照顾者一般资料调查、家庭照顾者照护能力量表进行调查,运用多元线性回归模型分析家庭照顾者照护能力的影响因素。结果老年结核病患者家庭照顾者照护能力总分为(38.09±9.58)分,处于较低水平;多元线性回归模型分析结果显示:照顾者的性别、文化程度、健康状况及对结核病的了解状况为影响家庭照顾者照护能力的影响因素(P<0.05)。结论照护能力水平受多种因素影响,如照顾者的性别、文化程度、健康状况及对疾病的了解程度,医护人员及政府部门应根据不同的群体给予相应的支持,增加结核病相应知识,减轻照顾者负担,从而提高照护能力水平。

关键词：结核病家庭照顾者照护能力影响因素

工程化学“产教融合”的实践——农药氟苯唑生产工艺的改进

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大学化学 2024年第3期39卷 199-204页

作者：黄莎华郭晓明林琳常光萍韩生周祖新上海应用技术大学化学与环境工程学院上海200233 上海市医药学校上海200135

随着当前教育改革的不断深化,应用型高校逐渐向着产教融合模式发展。以培养学生解决问题的能力为导向,对化学相关课程进行重新建设规划。课堂教学专注于对知识的理解和诠释,而企业则以生产成本和产品利润为导向,两者之间交流的缺乏会导... 详细信息

随着当前教育改革的不断深化,应用型高校逐渐向着产教融合模式发展。以培养学生解决问题的能力为导向,对化学相关课程进行重新建设规划。课堂教学专注于对知识的理解和诠释,而企业则以生产成本和产品利润为导向,两者之间交流的缺乏会导致学生对课堂知识难以学以致用。在工程化学教学过程中,我们将农药氟苯唑生产实践与课堂教学相结合,作为教和学的研究课题,通过优化化学反应过程来提高生产效益。这些实践不仅完善了教师的教学内容,也加深了学生对基本原理的理解。在应用的过程中也极大地提高了学生们学以致用的兴趣。

关键词：产教融合工程化学化学工艺氟苯唑

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THE PRINCIPLE OF PROPORTIONALITY:SUMMARY AND CONSENSUS IN THE 6TH INTERNATIONAL CONFERENCE ON HUMAN RIGHTS PROTECTION UNDER PANDEMIC PREVENTION AND CONTROL,BEIJING(CHINA)2020

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Frontiers of Law in China-Selected Publications from Chinese Universities 2021年第1期16卷 122-141页

作者： guo xiaoming Law and Development McGill Faculty of LawMontrealCanada Human Rights Center Renmin University of ChinaBeijing 100872China

Against the backdrop of the COVID-19 pandemic and China’s regularized pandemic prevention and control,leading legal scholars from China,North America,and Eurasia participated in The 6th International Conference on Human Rights Protection under Pandemic Prevention and *** engaged in fruitful discussions on the normative necessity and practical relevance of the principle of proportionality in justifying their current governments’anti-pandemic *** on pandemic-related human rights conditions and rule of law challenges in global contexts,this article summarizes the participating scholars’speeches through the integrated lens of human rights and the jurisprudence of health law in the COVID-19 containment *** can be divided into six topical dimensions,involving normative utility,governance logic,reasonable limits,constitutional criteria,viable approaches,and post-pandemic challenges with respect to the principle of *** provide a more policy-relevant and theoretically sound framework for a community of common health for mankind,this article succinctly concludes with a series of overlapping consensus on the application of the principle of proportionality in the fight against the *** consensus,tentatively named the“Renmin Human Rights Consensus,”builds on five interrelated elements and generates five human rights assertions and a series of specific principles of health law.

关键词： anti-pandemic measures COVID-19 containment phase community of common health for mankind proportionality analysis human rights jurisprudence Renmin Human Rights Consensus

Influence of Alternative Magnetic Field on the Diffusion of Al and Mg

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Journal of Materials Science & Technology 2004年第4期20卷 457-459页

作者： Xiaotao LIU, Jianzhong CUI, Yanhui guo, xiaoming WU and Jun ZHANGThe Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China Mat. Electromagnetic Proc. Lab. Northeastern Univ. Shenyang 110004 China

The influence of an alternative magnetic field on the diffusion of Al and Mg in AI-Mg diffusion couple is studied. The diffusion zone is composed of two intermediate phases, namelyβ and γ phase. Thickness of each intermediate phase is examined. The results show that the alternative magnetic field increases the thicknesses of βand γ phase zone and the layer growth ofβ and γphase obeys the parabolic rate law. The growth rate of the β and γ phase are increased with the application of the alternative magnetic field. This change is manifested through a change in the frequency factor k0 and not through a change in the activation energy Q. The frequency factor k0 for intermediate phase growth with an alternative magnetic field is 39.95 cm2/s for 7 phase and 2.84×10-4 cm2/s for β phase compared with those without the magnetic field is 22.4 cm2/s for 7 phase and 1.53×10-4 cm2/s for β phase.

关键词： Alternative magnetic field Al-Mg Couple Intermediate phase Thickness Diffusion

Improving Federated Learning through Abnormal Client Detection and Incentive

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Computer Modeling in Engineering & Sciences 2024年第4期139卷 383-403页

作者： Hongle guo Yingchi Mao xiaoming He Benteng Zhang Tianfu Pang Ping Ping College of Computer and Information Hohai UniversityNanjing211100China Key Laboratory ofWater Big Data Technology of Ministry ofWater Resources Hohai UniversityNanjing211100China

Data sharing and privacy protection are made possible by federated learning,which allows for continuous model parameter sharing between several clients and a central *** reliable and high-quality clients must participate in practical applications for the federated learning global model to be accurate,but because the clients are independent,the central server cannot fully control their *** central server has no way of knowing the correctness of the model parameters provided by each client in this round,so clients may purposefully or unwittingly submit anomalous data,leading to abnormal behavior,such as becoming malicious attackers or defective *** reduce their negative consequences,it is crucial to quickly detect these abnormalities and incentivize *** this paper,we propose a Federated Learning framework for Detecting and Incentivizing Abnormal Clients(FL-DIAC)to accomplish efficient and security federated *** build a detector that introduces an auto-encoder for anomaly detection and use it to perform anomaly identification and prevent the involvement of abnormal clients,in particular for the anomaly client detection *** them,before the model parameters are input to the detector,we propose a Fourier transform-based anomaly data detectionmethod for dimensionality reduction in order to reduce the computational ***,we create a credit scorebased incentive structure to encourage clients to participate in training in order tomake clients actively *** training models(CNN,MLP,and ResNet-18)and three datasets(MNIST,Fashion MNIST,and CIFAR-10)have been used in *** to theoretical analysis and experimental findings,the FL-DIAC is superior to other federated learning schemes of the same type in terms of effectiveness.

关键词： Federated learning abnormal clients incentive credit score abnormal score detection

氯离子环境下钢筋混凝土构件多筋锈胀破坏模式

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东南大学学报（自然科学版） 2018年第3期48卷 528-536页

作者：张芹郭力郭小明东南大学土木工程学院南京210096 东南大学江苏省工程力学分析重点实验室南京210096

针对钢筋锈胀与氯离子扩散相互加强的非线性破坏过程开展了数值模拟研究,基于软件ABAQUS平台,通过二次开发,提出了考虑多根钢筋作用下氯离子扩散与混凝土损伤的过程耦合分析方法.根据已有文献的试验结果,验证了提出的过程耦合分析方法... 详细信息

针对钢筋锈胀与氯离子扩散相互加强的非线性破坏过程开展了数值模拟研究,基于软件ABAQUS平台,通过二次开发,提出了考虑多根钢筋作用下氯离子扩散与混凝土损伤的过程耦合分析方法.根据已有文献的试验结果,验证了提出的过程耦合分析方法的有效性.基于过程耦合分析方法,讨论了外部氯离子环境、初期混凝土中氯离子掺入量及配筋率对钢筋混凝土结构使用状态的影响.模拟结果表明:钢筋混凝土结构设计时应根据外部环境控制初期氯离子的掺入量;对于外部氯离子含量高的地区,表面出现损伤现象的结构应尽早采取维护措施;氯离子环境下,配筋率的提高会加速钢筋混凝土结构表面裂纹的出现.因此,设计处于高氯离子含量环境中的钢筋混凝土结构应考虑服役过程中结构渐近退化对其承载能力的影响.

关键词：氯离子过程耦合多筋锈蚀配筋率

On existence and uniqueness of the solution of elastoplastic contact problems

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Journal of Southeast University(English Edition) 2009年第2期25卷 232-235页

作者：郭小明东南大学土木工程学院南京210096

Contact problems and elastoplastic problems are unified and described by the variational inequality formulation, in which the constraints of the constitutional relations for elastoplastic materials and the contact conditions are relaxed totally. First, the coerciveness of the functional is proved. Then the uniqueness of the solution of variational inequality for the elastoplastic contact problems is demonstrated. The existence of the solution is also demonstrated according to the sufficient conditions for the solution of the elliptic variational inequality. A mathematical foundation is developed for the variational extremum principle of elastoplastic contact problems. The developed variational extremum forms can give an effective and strict mathematical modeling to solve contact problems with mathematical programming.

关键词： elastoplastic contact problem existence uniqueness coerciveness variational extremum form