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Experimental and numerical study of combustion characteristics of ammonia-hydrogen-air swirling flame with/without secondary air injection

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Chinese Journal of Aeronautics 2024年第4期37卷 243-255页

作者： chunyu LIU Chenhu GAO Yue HUANG Hua JIN Dan ZHAO Wenjiang XU Yancheng YOU School of Aerospace Engineering Xiamen UniversityXiamen 361005China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai 200240China Department of Mechanical Engineering University of CanterburyChristchurch 8041New Zealand

Ammonia (NH_(3)) is currently considered to be a potential carbon-free alternative fuel,and its large-scale use as such would certainly decrease greenhouse gas emissions and meet increasingly stringent emission *** the low flame propagation speed and high NO production of NH_(3) hinder its direct application as a renewable fuel,co-combustion of NH_(3)–H_(2)is an effective way to overcome these *** this study,the combustion characteristics of NH_(3)–H_(2)swirling flames under different equivalence ratios and H_2blending ratios conditions are both numerically and experimentally ***,the One-Dimensional (1D) laminar flame computation presents a comparison base and the Three-Dimensional (3D) numerical simulation yields detailed flame property ***,the high-speed camera takes instantaneous swirl flame images and the gas analyzer measures the NO emission at the exit plane of the flame *** and quantitative analysis is performed on the flame structure and NO emission for a series of NH_(3)–H_(2)swirl *** variation trends of the NO emission calculated using different techniques agree very *** quantitative results show that the NO emissions are much higher at lean equivalence ratios than those at rich equivalence ratios,and such difference is closely related to the combustion flame ***,it is shown that the utilization of secondary air injection can achieve a significant reduction in NO emissions at the exit of the combustion chamber at equivalence ratios less than or equal to 0.9.

关键词： Ammonia combustion Swirling flow NO emission characteristics Secondary combustion Chemical reaction mechanism

Synergistic Dual Dynamic Bonds in Covalent Adaptable Networks

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CCS Chemistry 2024年第1期6卷 41-56页

作者： Jun Zhao Zhaoming Zhang chunyu Wang Xuzhou Yan School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai

Covalent adaptable networks(CANs),comprising polymer networks crosslinked by dynamic covalent bonds(DCBs),have garnered considerable attention as sustainable *** the stress relaxation of CANs is essential for controlling their viscoelastic *** unexpected acceleration of stress relaxation has been observed in CANs containing dual dynamic *** dynamic behavior of the second dynamic bonds can accelerate stress relaxation and lower the relaxation activation energy of dual dynamic CANs compared to analogous CANs that rely on only one type of *** findings complement current approaches that utilize catalysts or adjust network *** this minireview,we summarize the synergistic acceleration effects in various CANs containing dual dynamic *** classify these effects based on the second dynamic bonds,including noncovalent bonds,mechanical bonds,and the second *** also discuss the mechanisms behind this ***,we highlight the challenges and offer perspectives on harnessing the synergistic effects of these dual dynamic systems to expand the chemistry and applications of CANs.

关键词： covalent adaptable networks dynamic covalent bonds dynamic materials stress relaxation synergistic effect

Als3-Th-cell-epitope plus the novel combined adjuvants of CpG,MDP and FIA synergistically enhanced the immune response of recombinant TRAP derived from Staphylococcus aureus in mice

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Als3-Th-cell-epitope plus the novel combined adjuvants of Cp...

2022年北京冬奥会对青少年参加冰雪运动热情影响的分析

第十四届全国免疫学学术大会

作者： Jinzhu Ma Wei Liu Simiao Yu Baifen Song Yongzhong Yu chunyu tong Liquan Yu Yudong Cui Heilongjiang Bayi Agricultural University

Introduction:Staphylococcus aureus(***) is a gram-positive opportunistic pathogen,there are currently no high effective vaccine against *** in humans and animals,the development of an efficient vaccine remains an important challenge to prevent *** ***,we prepared Als3-Th-cell-epitope-TRAP(ATT) proteins plus the novel combined adjuvants to develop a promising vaccine candidate against ***:The recombinant pET-28 a(+)-att plasmids were constructed,and the ATT proteins were expressed and obtained,then,ATT plus Freund’s adjuvant or the novel combined adjuvants of CpG,MDP and FIA were immunized in *** booster immunization,the levels of IFN-γ,IL-4,IL-10 and IL-17 A cytokine were evaluated,the humoral immune responses against TRAP were detected in mice,and the survival rate of mice was confirmed by challenge ***:The mice immunized with ATT plus Freund’s adjuvant exhibited significantly higher level of IFN-γ,IL-4,IL-1 0 and IL-17 A,and displayed the stronger humoral immune response against TRAP than control groups,importantly,the survival rate of these mice was significantly higher than control *** addition,compared with the control groups,ATT+CpG+MDP+FIA group was elicited significantly higher level of IFN-γ,IL-4,IL-10 and IL-17 A,and was triggered the stronger humoral immune responses against TRAP,moreover,generated the higher survival rate of ***:Als3 epitopes significantly enhanced TRAP *** plus the novel combined adjuvants of CpG,MDP and FIA induced the strong immune response and protection against ***,revealing the combination of CpG,MDP and FIA adjuvant acts the synergistic effect.

关键词： Als3 epitopes ATT,CpG MDP FIA Combined adjuvants

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当代体育科技 2021年第30期11卷 186-188页

作者：佟春雨沈阳理工大学辽宁沈阳110159

2015年,全国青少年体质调查结果表明,我国学生的身体状况总体是好的,但仍然存在不少不容忽视的问题,必须引起人们的高度重视。要把握2022年北京奥运会的契机,大力宣传奥林匹克精神,有效开展并普及冰雪运动,普及科学运动知识,激发青少年... 详细信息

2015年,全国青少年体质调查结果表明,我国学生的身体状况总体是好的,但仍然存在不少不容忽视的问题,必须引起人们的高度重视。要把握2022年北京奥运会的契机,大力宣传奥林匹克精神,有效开展并普及冰雪运动,普及科学运动知识,激发青少年锻炼的热情和积极性,进一步深化体教融合,更好地促进青少年健康发展,改善青少年体质下降状况,并且推动冰雪运动在我国的普及与发展及促进体育强国战略目标的实现。此外,这对我国举办2022年北京冬季奥运会也有着深远的意义。

关键词：冬奥会青少年运动热情改善

我国高校两次体育课程教学指导《纲要》比较与教师能力模型构建研究

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沈阳体育学院学报 2009年第4期28卷 81-84,91页

作者：佟春雨邹师赵洪明沈阳理工大学体育部辽宁沈阳110168 沈阳师范大学体育科学学院辽宁沈阳110036

通过比较,从两个《纲要》的变化中提出新《纲要》所赋予教师的新能力。通过对能力结构的梳理与借鉴,构建适应新《纲要》要求的能力模型。旨在指导高校体育教师对《纲要》变化的理解,积极适应新《纲要》要求,推进体育教学改革,为探询高... 详细信息

通过比较,从两个《纲要》的变化中提出新《纲要》所赋予教师的新能力。通过对能力结构的梳理与借鉴,构建适应新《纲要》要求的能力模型。旨在指导高校体育教师对《纲要》变化的理解,积极适应新《纲要》要求,推进体育教学改革,为探询高校体育教师能力素质的提升提供参考依据。

关键词：高校体育能力纲要比较模型

Water-Driven Malleable,Weldable and Eco-Friendly Recyclable Carbon Fiber Reinforced Dynamic Composites

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Chinese Journal of Chemistry 2024年第5期42卷 516-522页

作者： Ping Yu Qirui Huang Yi Wang Wan Peng Zichen Jia Haiyue Wang Juanjuan Ma chunyu Wang Xuzhou Yan School of Environmental and Chemical Engineering Jiangsu Key Laboratory of Function Control Technology for Advanced MaterialsJiangsu Ocean UniversityLianyungangJiangsu222005 China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai200240 China

Traditional carbon fiber-reinforced polymers based on thermoset matrix have been extensively used in the fields of wind turbine blades,automotive sector,and aerospace,among many ***,there is still a major challenge of recycling those polymers due to the high cost and adverse impacts on the *** this work,we apply a polyimine network as matrix,which possess considerable tensile and thermal properties,to prepare the carbon fiber reinforced polyimine materials with trifluoromethyl diphenoxybenzene units(CFRFP)using a prepreg-based compression molding *** CFRFP can be reshaped or reprocessed by heat or with water rapidly,and exhibited multifunction,including welding,chemical recycling,*** unique findings gained from our study will facilitate the manufacturing capability and enrich the types of fiber-reinforced composites.

关键词： Dynamic chemistry Green chemistry Fiber-reinforced composites Fluoropolyimine Welding Reshaping Recycling Renewable resources

基于二次图像分解的红外图像与可见光图像融合

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光学精密工程 2024年第10期32卷 1567-1581页

作者：马鑫喻春雨童亦新张俊南京邮电大学电子与光学工程学院、柔性电子(未来技术)学院江苏南京210023

针对红外图像与可见光图像融合中细节丢失严重,红外图像的特征信息未能突出显示以及源图像的语义信息被忽视的问题,提出一种基于二次图像分解的红外图像与可见光图像融合网络(Secondary Image Decomposition For Infrared And Visible I... 详细信息

针对红外图像与可见光图像融合中细节丢失严重,红外图像的特征信息未能突出显示以及源图像的语义信息被忽视的问题,提出一种基于二次图像分解的红外图像与可见光图像融合网络(Secondary Image Decomposition For Infrared And Visible Image Fusion,SIDFuse)。利用编码器对源图像进行二次分解以提取不同尺度的特征信息,然后利用双元素注意力为不同尺度的特征信息分配权重、引入全局语义支路,再采用像素相加法作为融合策略,最后通过解码器重建融合图像。实验选择FLIR数据集用于训练,采用TNO和RoadScene两个数据集进行测试,并选取八种图像融合客观评价参数进行实验对比分析。由TNO数据集的图像融合实验表明,在信息熵、标准差、空间频率、视觉保真度、平均梯度、差异相关系数、多层级结构相似性、梯度融合性能评价指标上,SIDFuse比基于卷积网络中经典融合算法DenseFuse分别平均提高12.2%,9.0%,90.2%,13.9%,85.1%,16.8%,6.7%,30.7%,比最新的融合网络LRRNet分别平均提高2.5%,5.6%,31.5%,5.4%,25.2%,17.9%,7.5%,20.7%。可见本文所提算法融合的图像对比度较高,可以同时更有效保留可见光图像的细节纹理和红外图像的特征信息,在同类方法中占有明显优势。

关键词：图像融合图像二次分解全局语义支路双元素注意力图像对比度

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强酸性阳离子交换树脂催化丙烯齐聚

离子交换与吸附 2012年第4期28卷 336-342页

作者：佟春雨陈群孙富安陈亮何明阳常州大学江苏省精细石油化工重点实验室

筛选了可用于丙烯齐聚的阳离子交换树脂催化剂,研究了树脂性质与催化性能间的关系,并考察了自制LC001树脂催化丙烯齐聚的工艺条件。结果发现,采用大孔、高交换量的LC001树脂在150℃、4.0MPa、液时空速为1.5h-1条件下反应,丙烯单程转化... 详细信息

筛选了可用于丙烯齐聚的阳离子交换树脂催化剂,研究了树脂性质与催化性能间的关系,并考察了自制LC001树脂催化丙烯齐聚的工艺条件。结果发现,采用大孔、高交换量的LC001树脂在150℃、4.0MPa、液时空速为1.5h-1条件下反应,丙烯单程转化率达到64.7%,C9和C12烯烃的选择性能达到58%。催化剂性能稳定,催化活性高,工艺流程简单,有很好的工业应用前景。

关键词：阳离子交换树脂丙烯齐聚壬烯

姑息治疗对晚期癌症患者癌性疼痛、食欲、睡眠质量及焦虑抑郁的影响

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国际精神病学杂志 2021年第4期48卷 718-722页

作者：佟春雨杨玲新疆医科大学第三临床医学院乌鲁木齐830011

目的观察晚期癌症患者使用姑息治疗对癌性疼痛、食欲、睡眠质量及焦虑抑郁的影响。方法选择我院2016年5月~2018年5月收治的晚期癌症患者76例,随机分为观察组和对照组各38例,其中对照组给予常规干预,观察组在此基础上进行姑息治疗。观察... 详细信息

目的观察晚期癌症患者使用姑息治疗对癌性疼痛、食欲、睡眠质量及焦虑抑郁的影响。方法选择我院2016年5月~2018年5月收治的晚期癌症患者76例,随机分为观察组和对照组各38例,其中对照组给予常规干预,观察组在此基础上进行姑息治疗。观察治疗前后简化McGill疼痛问卷量表(SF-MPQ)评分、食欲及体重变化情况、匹兹堡睡眠质量指数问卷(PSQI)评分、汉密尔顿焦虑量表(HAMA)评分、汉密尔顿抑郁量表(HAMD)评分及癌症治疗功能评价系统-普适性量表(FACT-G)评分情况。结果观察组治疗后SF-MPQ评分改善情况均优于对照组(P<0.05);观察组治疗后食欲及体重变化情况均优于对照组(P<0.05);观察组治疗后PSQI量表、HAMA量表、AMD量表评分均低于对照组(P<0.05);观察组治疗后FACT-G量表各项评分均高于对照组(P<0.05)。结论晚期癌症患者使用姑息治疗能缓解癌性疼痛,改善食欲及体重变化情况,同时提高患者睡眠质量,减轻焦虑及抑郁评分,进而提高其生活质量。

关键词：晚期癌症姑息治疗癌性疼痛食欲睡眠质量焦虑抑郁情绪