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A first-principles study on electronic structures and elastic properties of metal dopedα-Fe(N)high nitrogen steel

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Journal of Iron and Steel Research International 2017年第1期24卷 103-110页

作者： ji-chun yang Xiang-jun Liu Gui-xiao jia Xiao-yang Fu School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina

The binding energies,electronic structures and elastic properties of Ti,V,Cr,Mn,Co,Ni and Mg dopedα-Fe（N）systems have been investigated using a first-principles *** calculated results show that the dopings of Ti,V,Cr and Co improve the stability ofα-Fe（N）,and the stability ofα-Fe（N）is slightly weakened by Mn and Ni,and the doping of Mg is *** Ti,V,Cr and Mn dopedα-Fe（N）systems in which the doping metals are on the left side of Fe in the element periodic table andα-Fe（N）systems doped by Co and Ni on the right side of Fe,their corresponding cohesive forces decrease with decreasing atomic radius of the doping *** obvious interaction exists among M3 d,Fe4s3p3d and N2 *** these doping systems,metal atoms lose electrons,while N gains *** of Ti,V,Cr and Mn inα-Fe（N）strengthen the interaction between N and the surrounding metals,and it is not apparent for the dopings of Co,Ni and *** calculations of Fe15 MN systems show that,except for the Fe15 MgN system,shear modulus G and Young modulus E of Fe15 MN systems are improved,and the bulk modulus Bslightly decreases,namely,total elastic properties are *** magnitude change rule of E reflecting the cohesive force between atoms is consistent with that for the binding energies.

关键词： First principle High nitrogen steel Metal nitride Electronic structure Elastic property

Effect of solute Ce,Mn,and Si on mechanical properties of silicon steel:insights from DFT calculations

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Journal of Iron and Steel Research International 2024年第3期31卷 700-709页

作者： Xiang-jun Liu ji-chun yang Hui-ping Ren Xiao-bin jia Ming-yi Zhang Chang-qiao yang School of Materials and Metallurgy Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resource Inner Mongolia University of Science and TechnologyBaotou 014010Inner MongoliaChina Inner Mongolia North Heavy Industries Group Co. Ltd.Baotou 014010Inner MongoliaChina Inner Mongolia Metal Material Research Institute Baotou 014010Inner MongoliaChina

The influence of solute Ce,Mn,and Si on the mechanical properties of silicon steel was investigated by first-principles ***,Mn,and Si can all be solubilized in Fe *** significantly reduces the incompressibility and rigidity of the system but also significantly improves the toughness and *** effect of Mn on mechanical properties of the system is not *** has a significant effect on the improvement in incompressibility and rigidity but a limited effect on the improvement in toughness and *** metallic bond strength of Fe-Ce,Fe-Mn,and Fe-Si doped systems is weaker than that of the pure Fe system,which can be used to explain the reduction in the incompressibility and rigidity of these doped *** relatively high electron cloud density in the doped system may be responsible for the increase in toughness.

关键词： Silicon steel Rare earth First-principles calculation Elastic modulus Electronic structure

Synthesis and fungicidal activity of novel strobilurin analogues containing substituted N-phenylpyrimidin-2-amines

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Chinese Chemical Letters 2009年第11期20卷 1287-1290页

作者： Hui Chao Li Bao Shan Chai Zhi Nian Li ji chun yang Chang Ling Liu Liaoning University Shenyang 110036 China Shenyang Research Institute of Chemical Industry Shenyang 110021 China

A number of novel strobilurin analogues containing substituted N-phenylpyrimidin-2-amines were synthesized. The structures of these new compounds were confirmed by ^1H NMR, IR and elemental analysis. Biological evalua... 详细信息

关键词： N-Phenylpyrimidin-2-amine Strobilurin Synthesis Fungicidal activity

Prostaglandin E2 receptor EP3 regulates both adipogenesis and lipolysis in mouse white adipose tissue

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Journal of Molecular Cell Biology 2016年第6期8卷 518-529页

作者： Hu Xu jia-Lin Fu Yi-Fei Miao chun-jiong Wang Qi-Fei Han Sha Li Shi-Zheng Huang Sheng-Nan Du Yu-Xiang Qiu ji-chun yang Jan-Ake Gustafsson Richard MBreyer Feng Zheng Nan-Ping Wang Xiao-Yan Zhang You-Fei Guan Department of Physiology and Pathophysiology School of Basic Medical SciencesPeking University Health Science CenterBeijing 100191China Center for Nuclear Receptors and Cell Signaling Department of Biology and BiochemistryUniversity of HoustonHoustonTX 77204USA Department of Veterans Affairs Tennessee Valley Health Authorityand Department of MedicineVanderbilt University Medical CenterNashvilleTN 37232USA Advanced Institute for Medical Sciences Dalian Medical UniversityDalian 116044China Department of Physiology AstraZeneca–Shenzhen University Joint Institute of NephrologyShenzhen University Health Science CenterShenzhen 518060China

Among the four prostaglandin E2 receptors,EP3 receptor is the one most abundantly expressed in white adipose tissue(WAT).The mouse EP3 gene gives rise to three isoforms,namely EP3α,EP3β,and EP3γ,which differ only at their C-terminal *** date,functions of EP3 receptor and its isoforms in WAT remain incompletely *** this study,we found that the expression of all EP3 isoforms were downregulated in WAT of both db/db and high-fat diet-induced obese *** ablation of three EP3 receptor isoforms(EP3^(−/−)mice)or EP3αand EP3γisoforms with EP3βintact(EP3βmice)led to an obese phenotype with increased food intake,decreased motor activity,reduced insulin sensitivity,and elevated serum *** the differentiation of preadipocytes and mouse embryonic fibroblasts to adipocytes was markedly facilitated by either pharmacological blockade or genetic deletion/inhibition of EP3 receptor via the cAMP/PKA/PPARγpathway,increased adipogenesis may contribute to obesity in EP3^(−/−)and EP3β***,both EP3^(−/−)and EP3βmice had increased lipolysis in WAT mainly due to the activated cAMP/PKA/hormone-sensitive lipase *** together,our findings suggest that EP3 receptor and itsαandγisoforms are involved in both adipogenesis and lipolysis and influence food intake,serum lipid levels,and insulin sensitivity.

关键词： arachidonic acid EP3 receptor isoform PKA PPARγ insulin resistance obesity

Association between Nonalcoholic Fatty Liver Disease and Carotid Artery Disease in a Community-Based Chinese Population： A Cross-Sectional Study

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Chinese Medical Journal 2018年第19期131卷 2269-2276页

作者： Yu-Chen Guo Yong Zhou Xing Gao Yan Yao Bin Geng Qing-Hua Cui ji-chun yang Hong-Pu Hu Department of Health Information Management Institute of Medical Information Peking Union Medical College & Chinese Academy of Medical Sciences Beijing 100020 China Beijing Institute of Heart Lung and Blood Vessel Diseases Beijing Anzhen Hospital Capital Medical University Beijing 100029 China Department of Cardiology Beijing Anzhen Hospital Capital Medical University Beijing 100029 China Hypertension Center Fuwai Hospital Chinese Academy of Medical Sciences and Peking Union Medical College State Key Laboratory of Cardiovascular Disease Beijing 100037 China Department of Biomedical Informatics School of Basic Medical Sciences Key Laboratory of Molecular Cardiovascular Science of the Ministry of Education Center for Non-coding RNA Medicine Peking University Health Science Center Beijing 100191 China Department of Physiology and Pathophysiology School of Basic Medical Sciences Peking University Health Science Center Beijing 100191 China

Background： Nonalcoholic fatty liver disease （NAFLD） is one of the most common chronic liver diseases with a high prevalence in the general population. The association between NAFLD and cardiovascular disease has been well addressed in previous studies. However, whether NAFLD is associated with carotid artery disease in a community-based Chinese population remained unclear. The aim of this study was to investigate the association between NAFLD and carotid artery disease. Methods： A total of 2612 participants （1091 men and 1521 women） aged 40 years and older from jidong of Tangshan city （China） were selected for this study. NAFLD was diagnosed by abdominal ultrasonography. The presence of carotid stenosis or plaque was evaluated by carotid artery ultrasonography. Logistic regression was used to analyze the association between NAFLD and carotid artery disease. Results： Participants with NAFLD have a higher prevalence of carotid stenosis （12.9% vs. 4.6%） and carotid plaque （21.9% vs. 15.0%） than those without NAFLD. After adjusting for age, gender, smoking status, income, physical activity, diabetes, hypertension, triglyceride, waist-hip ratio, and high-density lipoprotein, NAFLD is significantly associated with carotid stenosis （odds ratio [OR]： 2.06, 95% confidence interval [CI]： 1.45-2.91）, but the association between NAFLD and carotid plaque is not statistically significant （OR： 1. 10, 95% CI： 0.86-1.40）. Conclusion： A significant association between NAFLD and carotid stenosis is found in a Chinese population.

关键词： Association Carotid Artery Disease Carotid Stenosis Nonalcoholic Fatty Liver Disease

舰船维修工时费率与物价指数的阈值协整关系实证研究

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系统工程与电子技术 2012年第11期34卷 2290-2296页

作者：杜军岗魏汝祥季春阳海军工程大学装备经济管理系湖北武汉430033 海军工程大学理学院湖北武汉430033 海军装备部综合计划部北京100000

基于不同时期舰船维修工时费率与物价指数的波动特征,提出采用非线性阈值协整理论,建立了工时费率与物价指数的阈值向量误差修正模型,并分析模型估计、检验方法。鉴于研究对象的小样本性质,设计了基于参数化残差的Bootstrap仿真实验,实... 详细信息

基于不同时期舰船维修工时费率与物价指数的波动特征,提出采用非线性阈值协整理论,建立了工时费率与物价指数的阈值向量误差修正模型,并分析模型估计、检验方法。鉴于研究对象的小样本性质,设计了基于参数化残差的Bootstrap仿真实验,实现模型的检验及估计。根据模型结果,对不同机制下工时费率与物价指数因果关系进行检验,并与线性协整假设下的检验结果进行比较。实证结果表明:工时费率与物价指数属于两机制非线性阈值协整系统,当对均衡态的偏离超过阈值时,系统向均衡态调整,并且工时费率的调整速度大于物价指数调整的速度;否则,系统不进行调整。在不同机制下,工时费率与物价指数存在不同的单向因果关系。

关键词：工时费率物价指数阈值协整小样本 Bootstrap

互联网背景下港口企业供应链金融模式演化及创新趋势研究

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软科学 2019年第5期33卷 22-28页

作者：计春阳晏雨晴广西大学商学院南宁530004

首先沿模式演化路径梳理与揭示港口企业供应链金融的发展脉络与演变规律,即"物流金融服务→金融服务平台→产业链+供应链金融"三个阶段,然后依据演化逻辑从模式创新与技术创新双轮驱动层面提出未来港口企业供应链金融趋向于"产业互联网... 详细信息

首先沿模式演化路径梳理与揭示港口企业供应链金融的发展脉络与演变规律,即"物流金融服务→金融服务平台→产业链+供应链金融"三个阶段,然后依据演化逻辑从模式创新与技术创新双轮驱动层面提出未来港口企业供应链金融趋向于"产业互联网平台+供应链金融"的产业平台生态及"技术服务平台+供应链金融"的技术平台生态的创新趋势。

关键词：互联网供应链金融模式演化产业平台生态技术平台生态

在高师教育中实现“教书育人能力”的再生产——如何在高师教育中培养学生的教书育人能力

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教师教育研究 2005年第1期17卷 30-35页

作者：季春阳廖志刚哈尔滨师范大学化学系黑龙江哈尔滨150080

“教书育人”是每一位教师都应当具有的基本能力,也是高等师范教育培养的最终目标,但是我国师范教育本身对于师范生“教书育人”的培养并未曾引起教育研究者的关注。因此,如何将“教书育人”这种教育、教学能力有效内化于每一个师范生... 详细信息

“教书育人”是每一位教师都应当具有的基本能力,也是高等师范教育培养的最终目标,但是我国师范教育本身对于师范生“教书育人”的培养并未曾引起教育研究者的关注。因此,如何将“教书育人”这种教育、教学能力有效内化于每一个师范生的能力结构中实现“教书育人能力”的有机传承,为他们以后的教育、教学工作奠定良好的基础,是现代师范教育研究、实践应当注重的环节。本文就这一问题进行探讨,并试图通过研究高等师范教育存在的实际问题,提出相应的解决策略。

关键词：教书育人教书育人能力高师教育改革:高师课程建设

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不同形状城市湿地对周边环境温湿度的影响

应用生态学报 2017年第10期28卷 3385-3392页

作者：纪鹏朱春阳盛云燕黑龙江八一农垦大学农学院黑龙江大庆163319 华中农业大学风景园林系武汉430070

2015年春、夏、秋季选择大庆市区5种不同形状特征的城市湿地及周边环境作为研究对象,利用小尺度定量测定的方法,分析城市湿地形状特征对周边环境温、湿效益的影响.结果表明:不同形状特征的城市湿地均具有增湿降温效应.其中,夏季的增湿... 详细信息

2015年春、夏、秋季选择大庆市区5种不同形状特征的城市湿地及周边环境作为研究对象,利用小尺度定量测定的方法,分析城市湿地形状特征对周边环境温、湿效益的影响.结果表明:不同形状特征的城市湿地均具有增湿降温效应.其中,夏季的增湿降温效应最强,春季其次,秋节最差.形状特征对湿地的降温增湿能力具有显著影响,不规则形状湿地>规则形状湿地(近圆形湿地、近矩形湿地)>长条形状湿地;增湿降温日变化受环境温度影响较大,即早晚弱、中午强,春、秋季增湿降温幅度最大的时段为12:00—14:00,夏季增湿降温幅度最大的时段为14:00—16:00.

关键词：城市湿地形状特征温度相对湿度