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逆流喷淋浓缩塔中雾化参数对脱硫废水液滴群流动与蒸发特性的影响

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中国电机工程学报 2022年第7期42卷 2588-2596页

作者：何晨毛霖杨仲卿邱国枫张力闫云飞冉景煜低品位能源利用技术及系统教育部重点实验室(重庆大学) 重庆市沙坪坝区400044 国家电投集团远达环保工程有限公司重庆科技分公司重庆市北部新区401122 重庆大学能源与动力工程学院重庆市沙坪坝区400044

烟气余热蒸发能有效实现电厂脱硫废水的浓缩减量,合理的喷嘴雾化参数有利于提高浓缩塔内废水与烟气之间的流动传热并指导其结构设计。该文采用数值模拟方法研究喷嘴全锥角、液滴初始粒径和初始速度对塔内蒸发流动的影响,并对相关因素进... 详细信息

烟气余热蒸发能有效实现电厂脱硫废水的浓缩减量,合理的喷嘴雾化参数有利于提高浓缩塔内废水与烟气之间的流动传热并指导其结构设计。该文采用数值模拟方法研究喷嘴全锥角、液滴初始粒径和初始速度对塔内蒸发流动的影响,并对相关因素进行显著性分析。蒸发效率在全锥角50°左右达到峰值36.9%。综合考虑碰壁量和逃逸量,液滴最佳粒径为1500μm,且废水蒸发在液滴速度15~25m/s时更易进行。此外,响应曲面分析表明,液滴初始直径、液滴初速度对停留时间影响较大,而液滴蒸发效率主要受其粒径变化的影响。因此,在设计喷淋浓缩塔的结构时应综合考虑液滴粒径和液滴初始速度。

关键词：脱硫废水液滴群蒸发碰壁质量比停留时间响应曲面分析逆流喷淋塔

Online battery model parameters identification approach based on bias-compensated forgetting factor recursive least squares

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Green Energy and Intelligent Transportation 2024年第4期3卷 12-22页

作者： Dong Zhen Jiahao Liu Shuqin Ma jingyu Zhu Jinzhen Kong Yizhao Gao Guojin Feng Fengshou Gu School of Mechanical Engineering Hebei University of TechnologyTianjin300401 China Advanced Equipment Research Institute Co. Ltd.of HEBUTTianjin300401 China College of Information Science and Engineering Hohai UniversityNanjing210098 China School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240 China School of Computing and Engineering University of HuddersfieldHuddersfield HD13DHUK

Accuracy of a lithium-ion battery model is pivotal in faithfully representing actual state of battery,thereby influencing safety of entire electric *** estimation of battery model parameters using key measured signals is ***,measured signals inevitably carry random noise due to complex real-world operating environments and sensor errors,potentially diminishing model estimation *** the challenge of accuracy reduction caused by noise,this paper introduces a Bias-Compensated Forgetting Factor Recursive Least Squares(BCFFRLS)***,a variational error model is crafted to estimate the average weighted variance of random ***,an augmentation matrix is devised to calculate the bias term using augmented and extended parameter vectors,compensating for bias in the parameter *** assess the proposed method's effectiveness in improving parameter identification accuracy,lithium-ion battery experiments were conducted in three test conditions—Urban Dynamometer Driving Schedule(UDDS),Dynamic Stress Test(DST),and Hybrid Pulse Power Characterization(HPPC).The proposed method,alongside two contrasting methods—the offline identification method and Forgetting Factor Recursive Least Squares(FFRLS)—was employed for battery model parameter *** analysis reveals substantial improvements,with the mean absolute error reduced by 25%,28%,and 15%,and the root mean square error reduced by 25.1%,42.7%,and 15.9%in UDDS,HPPC,and DST operating conditions,respectively,when compared to the FFRLS method.

关键词： Lithium-ion battery Battery model Recursive least squares Parameter identification

EuSHT Acts as a Hub Gene Involved in the Biosynthesis of 6-Hydroxyluteolin and Quercetin Induced by Salt Stress in Eucommia ulmoides

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Phyton-International Journal of Experimental Botany 2024年第8期93卷 2095-2113页

作者： Fuxin Li Enyan Chen Xinxin Chen jingyu Jia Hemin Wang Jie Zhang Jianrui Sun Xin Li College of Food and Bioengineering Henan University of Science and TechnologyLuoyang471023China Henan Engineering Research Center of Food Microbiology Luoyang471023China National Demonstration Center for Experimental Food Processing and Safety Education Luoyang471000China

Salt stress inhibits plant growth and affects the biosynthesis of its secondary *** are natural compounds that possess many important biological activities,playing a significant role in the medicinal activity of Eucommia ulmoides(***).To investigate the mechanism by which salt stress affects the biosynthesis of flavonoids in ***,a comprehensive analysis of metabolomics and transcriptomics was *** results indicated that salt stress led to the wilting and darkening of *** leaves,accompanied by a decrease in chlorophyll levels,and significantly induced malondialdehyde(MDA)and relative electrical *** salt stress,most metabolites in the flavonoid biosynthesis pathway of *** were upregulated,indicating that flavonoid biosynthesis is likely the main induced pathway under salt *** them,secondary metabolites such as 6-Hydroxyluteolin and Quercetin are likely key metabolites induced by salt *** correlation analysis of transcriptomics and metabolomics revealed that EuSHT is a hub gene induced by salt stress,promoting the production of flavonoids such as *** co-expression network showed a strong positive correlation between EuSHT and the biosynthesis of 6-Hydroxyluteolin and Quercetin,while it exhibited a negative correlation with Catechin *** branches leading to Luteolin and Dihydroquercetin are likely the main pathways for flavonoid compound biosynthesis in the plant stress response during salt *** results of this study provided a preliminary mechanism of secondary metabolites such as flavonoids in the medicinal plant *** induced by salt stress and provided new theoretical support for discussing the mechanism of plant stress *** also provided useful information for subsequent exploration of resistance genes in ***.

关键词： Eucommia ulmoides ﬂavonoid salt stress transcriptomics widely targeted metabolomics

湿法脱硫塔内流场均匀性影响因素及其评价方法

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动力工程学报 2020年第10期40卷 825-831页

作者：冉景煜邓庆波牛俊天杨仲卿蒲舸张力低品位能源利用技术及系统教育部重点实验室重庆400044 重庆大学能源与动力工程学院重庆400044

由于湿法脱硫塔内烟气速度分布对气液接触混合有决定性影响,利用基于面积加权平均速度和质量加权平均速度的速度均匀指数λ和速度相对标准差C_V计算脱硫塔内的流场均匀性,确定合适的评价指标,研究了入口烟气速度和液气比对塔内烟气均匀... 详细信息

由于湿法脱硫塔内烟气速度分布对气液接触混合有决定性影响,利用基于面积加权平均速度和质量加权平均速度的速度均匀指数λ和速度相对标准差C_V计算脱硫塔内的流场均匀性,确定合适的评价指标,研究了入口烟气速度和液气比对塔内烟气均匀性的影响规律。结果表明:2种评价指标均能很好地反映流场均匀性,综合考虑确定用速度均匀指数作为评价指标;速度均匀指数与入口烟气速度呈负相关,与液气比呈正相关;当液气比达到12.08 L/m^3时,速度均匀指数几乎不再增大;入口烟气速度越小,浆液整合作用越高效,入口烟气速度越大,烟气被有效整合所需的浆液量也越大,因此将入口烟气速度控制在较低范围可降低液气比,进而减少系统能耗。

关键词：湿法脱硫流场均匀性气液两相流速度分布数值模拟

仿生异质结全太阳光谱催化CO_(2)还原特性研究

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工程热物理学报 2023年第11期44卷 2924-2933页

作者：王子琪杨仲卿方瑞明何江闫云飞冉景煜低品位能源利用技术及系统教育部重点实验室重庆大学重庆400044 重庆大学能源与动力工程学院重庆400044

为了突破光热催化CO_(2)还原中太阳能吸收、光热转化以及载流子传输受限的瓶颈,本文受蝴蝶翅膀的启发,将原子薄纳米片Bi_(2)MoO_(6)垂直生长在柚子皮衍生碳(CPP)表面形成具有波导效应的脊阵列,利用多重散射强化太阳光吸收,实现光催化与... 详细信息

为了突破光热催化CO_(2)还原中太阳能吸收、光热转化以及载流子传输受限的瓶颈,本文受蝴蝶翅膀的启发,将原子薄纳米片Bi_(2)MoO_(6)垂直生长在柚子皮衍生碳(CPP)表面形成具有波导效应的脊阵列,利用多重散射强化太阳光吸收,实现光催化与光捕获中心的有机集成;受植物对光选择性吸收的启发,利用分形结构诱导太阳光的多级吸收,实现全太阳光谱的梯级利用。通过UV-Vis DRS、XPS、瞬态光电流以及DFT研究表明,CPP@Bi_(2)MoO_(6)的脊阵列和分形结构导致禁带宽度降低至2.43 eV并且催化表面温度迅速升高至117.2℃,M-O-C电子桥实现电子跨界面传输并形成“电子-热能-CO_(2)”富集中心,光热效应导致富集在CPP表面的电子向CO_(2)吸附位点迁移,使得CO_(2)被大量电子活化并沿CO_(2)→CO_(2)^(*)→CO_(2)^(-)→COOH^(*)→CO^(*)→CO的反应机理转化。

关键词：光热催化仿生异质结光热效应载流子传输全太阳光谱梯级利用

H2O对钒钛催化剂快速SCR反应影响规律及机制研究

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工程热物理学报 2022年第7期43卷 1976-1985页

作者：薛宗国杜学森王向民陈艳容闫云飞冉景煜重庆大学能源与动力工程学院低品位能源利用技术及系统教育部重点实验室重庆400044

相比常规烟气气氛中的选择性催化剂还原脱硝(SCR)反应,商用钒钛(V_(2)O_(5)/TiO_(2))催化剂在NO加入后构成的快速SCR反应气氛中具备优异的低温脱硝反应性能,快速SCR反应被认为具有良好的低温脱硝应用前景。烟气中存在的水蒸气会严重降低... 详细信息

相比常规烟气气氛中的选择性催化剂还原脱硝(SCR)反应,商用钒钛(V_(2)O_(5)/TiO_(2))催化剂在NO加入后构成的快速SCR反应气氛中具备优异的低温脱硝反应性能,快速SCR反应被认为具有良好的低温脱硝应用前景。烟气中存在的水蒸气会严重降低SCR催化剂在低温下的脱硝活性,因此本文重点研究了水蒸气对钒钛催化剂上标准及快速SCR反应的影响,发现快速SCR反应比标准SCR反应具备更优异的抗水性能。本文采用动力学实验结合密度泛函理论计算的研究方法,得到H_(2)O和NH_(3)在催化剂表面的竞争性吸附是H_(2)O抑制标准SCR反应的重要影响因素之一,而在快速SCR反应中,NO对催化剂的快速重氧化作用使得反应速率始终保持在较高水平,削弱了H_(2)O对NH_(3)的竞争性吸附影响,从而了展现良好的抗H_(2)O影响性能。

关键词：氮氧化物低温选择性催化还原快速SCR反应密度泛函理论

Ethanol changes Nestin-promoter induced neural stem cells to disturb newborn dendritic spine remodeling in the hippocampus of mice

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Neural Regeneration Research 2024年第2期19卷 416-424页

作者： Guixiang Wang Wenjia Wang Ye Zhang Xiaoying Gou Qingqing Zhang Yanmiao Huang Kuo Zhang Haotian Zhang jingyu Yang Yuting Li Wuya College of Innovation Shenyang Pharmaceutical UniversityShenyangLiaoning ProvinceChina Department of Pharmacology Shenyang Pharmaceutical UniversityShenyangLiaoning ProvinceChina

Adolescent binge drinking leads to long-lasting disorders of the adult central nervous system,particularly aberrant hippocampal *** this study,we applied in vivo fluorescent tracing using NestinCreERT2::Rosa26-tdTomato mice and analyzed the endogenous neurogenesis lineage progression of neural stem cells(NSCs)and dendritic spine formation of newborn neurons in the subgranular zone of the dentate *** found abnormal orientation of tamoxifen-induced tdTomato+(tdTom^(+))NSCs in adult mice 2 months after treatment with EtOH(5.0 g/kg,i.p.)for 7 consecutive *** markedly inhibited tdTom^(+)NSCs activation and hippocampal neurogenesis in mouse dentate gyrus from adolescence to ***(100 mM)also significantly inhibited the proliferation to 39.2%and differentiation of primary NSCs in *** mice exposed to EtOH also exhibited marked inhibitions in dendritic spine growth and newborn neuron maturation in the dentate gyrus,which was partially reversed by voluntary running or inhibition of the mammalian target of rapamycinenhancer of zeste homolog 2 *** vivo tracing revealed that EtOH induced abnormal orientation of tdTom+NSCs and spatial misposition defects of newborn neurons,thus causing the disturbance of hippocampal neurogenesis and dendritic spine remodeling in mice.

关键词： adolescence adulthood ethanol dentate gyrus EZH2 in vivo tracing lineage progression mTOR neural stem cell newborn dendritic spine newborn neurons

Fasn involved in the nephrotoxicity induced by polystyrene nanoplastics and the intervention of melatonin through intestinal microbiota-mediated lipid metabolism disorder

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Nano Research 2024年第8期17卷 7365-7375页

作者： Huiwen Kang Danyang Huang Jiaru Jing Wei Zhang Lei Zhang jingyu Wang Ziyan Liu Lin Han Ziyan Wang Lefeng Zhang Ai Gao Department of Occupational Health and Environmental Health School of Public HealthCapital Medical UniversityBeijing 100069China Beijing Key Laboratory of Environmental Toxicology Capital Medical UniversityBeijing 100069China

Nanoplastics(NPs)can accumulate in the kidney and cause kidney injury,but the multi-organ interaction mechanism and preventive measures of kidney injury are still *** this study,in vivo(60μg/day,42 days)and in vitro(0.4μg/μL,24 h)exposure models of polystyrene nanoplastics(PS-NPs,80 nm)in mice and human kidney cortex proximal tubule epithelial cells(HK-2 cells)were established,*** study revealed that PS-NPs caused obvious pathological changes and impaired renal function in mice,which were related to lipid metabolism disorders mediated by intestinal ***-fatty acid synthase(Fasn)-docosahexaenoic acid(DHA)pathway may be one of the mechanisms of kidney injury in ***,we also found that melatonin attenuates PS-NPs-induced nephrotoxicity by modulating lipid metabolism disorders(represented by DHA)and affects Fasn *** conclusion,our study revealed the important role of intestinal flora-mediated lipid metabolism in PS-NPs-induced nephrotoxicity and preliminarily provided potential key gene targets and effective preventive measures for PS-NPs-induced nephrotoxicity.

关键词： nanoplastics nephrotoxicity lipid metabolism fatty acid synthase(Fasn) melatonin

Excitonic Instability in Ta2Pd3Te5 Monolayer

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Chinese Physics Letters 2024年第9期41卷 57-62页

作者： jingyu Yao Haohao Sheng Ruihan Zhang Rongtian Pang Jin-Jian Zhou Quansheng Wu Hongming Weng Xi Dai Zhong Fang Zhijun Wang Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE)School of PhysicsBeijing Institute of TechnologyBeijing 100081China Department of Physics Hong Kong University of Science and TechnologyHong Kong 999077China

By systematic theoretical calculations,we reveal an excitonic insulator(EI)in the Ta_(2)Pd_(3)Te_(5)*** bulk Ta_(2)Pd_(3)Te_(5)is a van der Waals(vdW)layered compound,whereas the vdW layer can be obtained through exfoliation or molecular-beam ***-principles calculations show that the monolayer is a nearly zero-gap semiconductor with the modified Becke–Johnson *** to the same symmetry of the band-edge states,the two-dimensional polarization 2D would be finite as the band gap goes to zero,allowing for an EI state in the *** the first-principles many-body perturbation theory,the GW plus Bethe–Salpeter equation calculation reveals that the exciton binding energy is larger than the single-particle band gap,indicating the excitonic *** computed phonon spectrum suggests that the monolayer is dynamically stable without lattice *** findings suggest that the Ta_(2)Pd_(3)Te_(5) monolayer is an excitonic insulator without structural distortion.

关键词： monolayer principles calculations