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Electrically driven motion, destruction, and chirality change of polar vortices in oxide superlattices

Science china(Physics,Mechanics & Astronomy) 2022年第3期65卷 77-84页

作者： Pan Chen Congbing Tan Zhexin Jiang Peng Gao Yuanwei Sun Lifen wang Xiaomei Li Ruixue {2. Lei Liao xu Hou Ke Qu Ning Li Xiaomin Li Zhi xu Kaihui Liu Wenlong wang Jinbin wang Xiaoping Ouyang Xiangli Zhong Jie wang xuedong Bai beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China International Center for Quantum Materials Electron Microscopy LaboratorySchool of PhysicsPeking UniversityBeijing 100871China Hunan Provincial Key Laboratory of Intelligent Sensors and Advanced Sensor Materials School of Physics and ElectronicsHunan University of Science and TechnologyXiangtan 411201China Department of Engineering Mechanics Zhejiang UniversityHangzhou 310027China Collaborative Innovation Center of Quantum Matter Beijing 100871China school of Physical Sciences University of Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory Dongguan 523808China State Key Laboratory for Artificial Microstructure&Mesoscopic Physics School of PhysicsPeking UniversityBeijing 100871China school of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province Zhejiang UniversityHangzhou 310027China

Topological polar vortices, which are electric analogs of magnetic objects, present great potential in applications of future nanoelectronics because of their nanometer size, anomalous dielectric response, and chirality. To enable the functionalities, it is prerequisite to manipulate the polar states and chirality by using external stimuli. Here, we probe the evolutions of polar state and chirality evolutions of topological polar vortices in Pb TiO;/Sr TiO;superlattices under an electric field by using atomically resolved in situ scanning transmission electron microscopy and phase-field simulations. We find that, under electric field, the chiral vortex cores can be moved laterally to form close-pair structures, transform into a/c domain stripes, and finally become a nonchiral c-domain. Such transition is reversible and spontaneous after bias removal. Interestingly, during switching and backswitching events, the vortex rotation can be changed, offering a potential strategy to manipulate vortex chirality. The revealed dynamic behavior of individual polar vortices at the atomic scale provides fundamentals for future device applications.

关键词： chirality polar vortex ferroelectrics in situ transmission electron microscopy phase-field simulations

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中国人群关注花粉播报情况的多维度分析:一项国内大规模多中心横断面调查

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中华耳鼻咽喉头颈外科杂志 2024年第1期59卷 2-11页

作者：徐驰宇张彦书栾宁刘翔毅覃大洋王洪敏肖旭平周水洪张杰张萍白育青王蓬鹏齐岩孙中武刘壮巴罗王文超卢醒王旻郭睿孙德义陶立元朱丽北京大学第三医院耳鼻咽喉头颈外科北京100191 南京大学医学院附属盐城第一医院耳鼻咽喉科盐城224001 北京大学第三医院延庆医院耳鼻咽喉科北京102100 甘肃中医药大学附属医院耳鼻咽喉科兰州730030 广西钦州市第一人民医院耳鼻咽喉科钦州535000 朝阳市中心医院耳鼻咽喉科朝阳122000 湖南省人民医院耳鼻咽喉科长沙410005 浙江大学医学院附属第一医院耳鼻咽喉头颈外科杭州310003 贵州省仁怀市人民医院耳鼻咽喉科仁怀564500 内蒙古赤峰市敖汉旗医院耳鼻咽喉科赤峰024300 长治市人民医院耳鼻咽喉头颈外科长治046000 国家儿童医学中心首都医科大学附属北京儿童医院耳鼻咽喉头颈外科北京100045 首都医科大学宣武医院耳鼻咽喉头颈外科北京100053 北京航天总医院耳鼻咽喉头颈外科北京100076 北京大学第三医院延安分院(延安市中医医院)耳鼻咽喉科延安716000 西藏自治区人民医院耳鼻咽喉科拉萨850000 太原市中心医院耳鼻咽喉科太原030000 天津市环湖医院耳鼻咽喉头颈外科天津300350 北京大学人民医院耳鼻咽喉头颈外科北京100044 空军特色医学中心耳鼻咽喉科北京100042 大庆油田总医院耳鼻咽喉科大庆163001 北京大学第三医院流行病学研究中心北京100191

目的:多维度调查中国人群关注花粉播报情况,了解国内变应性鼻炎(allergic rhinitis,AR)患者的现状。方法:2.2.年3月1日至9月30日,国内2.家医院共同开展一项基于问卷星平台的大规模多中心横断面调查,收集中国东北、华北、华东、华中、华... 详细信息

目的:多维度调查中国人群关注花粉播报情况,了解国内变应性鼻炎(allergic rhinitis,AR)患者的现状。方法:2.2.年3月1日至9月30日,国内2.家医院共同开展一项基于问卷星平台的大规模多中心横断面调查,收集中国东北、华北、华东、华中、华南、西南、西北7个大区共7056名受试者的基本特征(包括社会人口学特征和其中AR患者的疾病特征),以及其关注花粉播报的情况、接收花粉播报的意愿和治疗满意率等。采用卡方检验、多变量线性回归及Logistic回归分析等统计学方法,多维度分析中国人群关注花粉播报的情况及相关影响因素。结果:所有7056名受试者中,关注过花粉播报的比例为2..02.。3176例自报AR患者和1019例花粉诱导的AR(pollen-induced AR,PiAR)患者中,关注花粉播报的比例分别为2..60%和39.16%,高于非AR和非PiAR受试者(χ^(2.值分别为2..74、175.11,P值均1)。AR患者中,春、秋季过敏原阳性患者关注花粉播报的比例高于常年过敏原阳性患者(χ^(2.值分别为2..90、19.51,P值均1);伴有哮喘、鼻窦炎、变应性结膜炎和心脑血管疾病的AR患者关注花粉播报的比例均高于不伴合并症的AR患者(χ^(2.值分别为50.83、2..97、56.78、7.62.P值均1.01%,显著高于其他大区(P值均2.、0.13、0.66、0.47,P值均2.=0.72.P1)。仅18.89%的AR患者对现有治疗效果满意;Logistic回归分析结果显示,关注过花粉播报的AR患者治疗满意率显著高于未关注者(OR=1.83,P1)。结论:受疾病认知水平等多种因素影响,目前中国人群关注花粉播报情况欠佳;国内AR患者的治疗满意率不高。

关键词：花粉播报变应性鼻炎花粉诱导的变应性鼻炎过敏原回避多中心横断面调查

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High VHL Expression Reverses Warburg Phenotype and Enhances Immunogenicity in Kidney Tumor Cells

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Genomics, Proteomics & Bioinformatics 2022年第4期20卷 657-669页

作者： Songbiao zhu Wenxi Ding Yuling Chen Weixuan {2. Renhua xu Chongdong Liu Xiaohui Liu Haiteng Deng MOE Key Laboratory of Bioinformatics Center for Synthetic and Systematic BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China Guangdong Metabolic Diseases Research Center of Integrated Chinese and Western Medicine Guangdong Pharmaceutical UniversityGuangzhou 510006China school of Nursing Binzhou Medical UniversityYantai 264003China Department of Obstetrics and Gynecology Beijing Chao-Yang HospitalCapital Medical UniversityBeijing 100020China

Clear cell renal cell carcinoma(ccRCC)is a frequently occurring renal *** Von Hippel-Lindau disease tumor suppressor VHL,a known tumor suppressor gene,is frequently mutated in about 50%of patients with ***,it is unclear whether VHL influences the progression of ccRCC tumors expressing wild-type *** the present study,we found that higher expression of VHL was correlated with the better disease-free survival(DFS)in ccRCC patients using The Cancer Genome Atlas(TCGA)*** revealed that VHL overexpression in ccRCC cells inhibited epithelial-mesenchymal transition(EMT),sterol regulatory elementbinding protein 1(SREBP1)-regulated triglyceride synthesis,and cell *** analysis provided us a global view that VHL regulated four biological processes,including metabolism,immune regulation,apoptosis,and cell ***,we found that VHL overexpression led to up-regulated expression of proteins associated with antigen processing and interferonresponsive proteins,thus rendering ccRCC cells more sensitive to interferon *** defined an interferon-responsive signature(IRS)composed of ten interferon-responsive proteins,whose m RNA expression levels were positively correlated with DFS in ccRCC *** together,our results propose that the subset of ccRCC patients with high VHL expression benefit from immunotherapy.

关键词： Renal cancer VHL Immunogenicity Multi-omics Interferon

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Diurnal brooding behavior of long-tailed tits （Aegithalos caudatus glaucogularis）

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Zoological Research 2016年第2期37卷 84-89页

作者： Jin YU Peng-Cheng wang Lei LU Zheng-wang ZHANG Yong wang Ji-Liang xu Jian-Qiang LI Bo XI Jia-Gui zhu Zhi-Yong DU school of Nature Conservation Beijing Forestry University Beijing 100083 China College of Life Sciences Beijing Normal University Beijing 100875 China school of Agricultural and Environmental Sciences Alabama A&M University Alabama 35762 USA Dongzhai National Nature Reserve Luoshan Henan 464236 China

Brooding is a major breeding investment of parental birds during the early nestling stage, and has important effects on the development and survival of nestlings. Investigating brooding behavior can help to understand avian breeding investment strategies. From January to June in 2.13 and 2.14, we studied the brooding behaviors of long-tailed tits （Aegithalos caudatus glaucogularis） in Dongzhai National Nature Reserve, Henan Province, china. We analyzed the relationships between parental diurnal brooding duration and nestling age, brood size, temperature, relative breeding season, time of day and nestling frequencies during brooding duration. Results showed that female and male long-tailed tit parents had different breeding investment strategies during the early nestling stage. Female parents bore most of the brooding investment, while male parents performed most of the nestling feedings. In addition, helpers were not found to brood nestlings at the two cooperative breeding nests. Parental brooding duration was significantly associated with the food delivered to nestlings （F=86.10, dr=l, 193.94, P〈0.001）, and was longer when the nestlings received more food. We found that parental brooding duration declined significantly as nestlings aged （F=5.99, dr=-1, 50.13, P=0.018）. When nestlings were six days old, daytime parental brooding almost ceased, implying that long- tailed tit nestlings might be able to maintain their own body temperature by this age. In addition, brooding duration was affected by both brood size （F=12.74, dr=-1,32.08, P=0.001） and temperature （F=5.83, df=-l, 39.59, P=-0.02.）, with it being shorter in larger broods and when ambient temperature was higher.

关键词： Long-tailed tit Aegithalos caudatusglaucogularis Brooding Daytime Early nestling stage

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Phylogeny of Trigonotis in china-with a special reference to its nutlet morphology and plastid genome

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Plant Diversity 2023年第4期45卷 409-421页

作者： xue-Min xu Dan-Hui Liu Shi-Xin {2. Zhen-Long wang Zhen Wei Quan-Ru Liu school of Life Sciences Zhengzhou UniversityZhengzhou450001China College of Life Sciences Beijing Normal UniversityBeijing100875China

The genus Trigonotis comprises nearly 60 species mainly distributed in East and Southeast *** has the largest number of Trigonotis species in the world,with a total of 44 species,of which 38 are *** morphology is useful for the taxonomic delimitation of ***,there are still controversial circumscriptions of nutlet shape in some *** previous studies,interspecies phylogenetic relationships were inferred using few DNA markers and very few taxa,which possibly led to erroneous or incomplete *** this study,the nutlet morphology of 39 Trigonotis taxa and the characteristics of 34 complete chloroplast genomes(2. taxa)were investigated and ***,the phylogenetic relationships were discussed within this genus based on complete chloroplast *** the best of our knowledge,this study is the first comprehensive analysis of nutlet morphology and complete chloroplast genome of *** on nutlet morphology,Trigonotis can be divided into two groups:Group 1,hemispherical or oblique tetrahedron with carpopodiums,and Group 2.inverted tetrahedron without *** chloroplast genome of Trigonotis exhibited a typical quadripartite structure,including 84-86 protein-coding,37 transfer RNA,and 8 ribosomal RNA genes,with a total length of 147,2.7-148,986 *** in the junctions were well conserved in Trigonotis,similar to those in other Boraginaceae ***,Trigonotis chloroplast genomes showed relatively high diversity,with more conserved genic regions than intergenic regions;in addition,we detected 14 hot spots(Pi>0.005)in non-coding *** analyses based on chloroplast genome data identified highly resolved relationships between Trigonotis ***,Trigonotis was divided into two clades with strong support:one clade included species with hemispherical or oblique tetrahedron nutlets with carpopodiums and bracts,whereas the other clade included species with inverted te

关键词： Trigonotis Nutlet morphology Plastid genome Genome structure Phylogenetic analysis

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Characterization of prognosis and immune infiltration by a novel glutamine metabolism-related model in cutaneous melanoma

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生物细胞(英文) 2023年第9期47卷 1931-1945页

作者： MENGQIN zhu TIANYI xu HAN ZHANG XIN FAN YULAN {2. JIAJIA ZHANG FEI YU Shanghai Clinical College Anhui Medical UniversityShanghai200040China The Fifth Clinical Medical College Anhui Medical UniversityHefei230032China Department of Nuclear Medicine Shanghai Tenth People’s HospitalTongji University School of MedicineShanghai200040China Institute of Nuclear Medicine Tongji University School of MedicineShanghai200040China National Genomics Data Center and CAS Key Laboratory of Genome Sciences and Information Beijing Institute of GenomicsChinese Academy of Sciences and China National Center for BioinformationBeijing100101China Department of Biomedical Engineering Nanjing University of Aeronautics and AstronauticsNanjing210000China

Glutamine metabolism(GM)plays an important role in tumor growth and *** cutaneous melanoma(SKCM)is a glutamine-dependent ***,the molecular characteristics and action mechanism of GM on SKCM remain ***,we aimed to explore the effects of GM-related genes on survival,clinicopathological characteristics,and the tumor microenvironment in *** this study,682.SKCM samples were obtained from the Cancer Genome Atlas(TCGA)and Gene Expression Omnibus(GEO)*** clustering was used to classify SKCM samples into distinct subtypes based on 41 GM-related *** in survival,immune infiltration,clinical characteristics,and Kyoto Encyclopedia of Genes and Genomes(KEGG)pathways as well as differentially expressed genes(DEGs)between subgroups were evaluated.A prognostic model was constructed according to prognostic *** analyses in survival,immune infiltration,tumor microenvironment(TME),tumor mutation burden(TMB),stemness,and drug sensitivity between risk groups were *** identified two distinct GM-related subtypes on SKCM and found that GM-related gene alterations were associated with survival probability,clinical features,biological function,and immune *** a risk model based on six DEGs(IL18,SEMA6A,PAEP,TNFRSF17,AIM2.and CXCL10)was constructed and validated for predicting overall survival in SKCM *** results showed that the risk score was negatively correlated with CD8+T cells,activated CD4+memory T cells,M1 macrophages,andγδT *** group with a low-risk score was accompanied by a better survival rate with higher TME scores and lower stemness ***,the group with high-and low-risk score had a significant difference with the sensitivity of 75 drugs(p1).Overall,distinct subtypes in SKCM patients based on GM-related genes were identified and the risk model was constructed,which might contribute to prognosis prediction,guide clinical therapy,and develop novel

关键词： Glutamine metabolism Cutaneous melanoma Immune infiltration Overall survival

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Efficient CHzNHzPbl3 perovskite solar cells with 2.PA- n-DP hole-transporting layers

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Nano Research 2015年第4期8卷 1116-1127页

作者： Lifeng zhu Junyan Xiao Jiangjian Shi Junjie wang Songtao Lv Yuzhuan xu Yanhong Luo YinXiao Shirong wang Qingbo Meng Xianggao Li Dongmei Li Key Laboratory for Renewable Energy (CAS) Beijing Key Laboratory for New Energy Materials and Devices 8eijing National Laboratory for Condense Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

CH3NH3PbI3 perovskite solar cells with 2.PA-n-DP （TPA = 4,4＇-（（1E, I＇E,3E,3＇E）- [1,1＇-biphenyl]4,4＇-diylbis（buta-1,3-diene-4,1-diyl））; DP = bis（N,N-di-p-tolylaniline）; n = 1, 2. 3, 4） as hole-transporting materials （HTMs） have been fabricated. After optimization of the mesoporous TiO2.film thickness, devices based on 2.PA- 2.DP with power conversion efficiencies （PCEs） of up to 12.96% have been achieved, comparable to those of devices with （2.2.,7,7＇-tetrakis（N,N-di-p- methoxyphenylamine）-9,9＇-spirobifluorene）（spiro-OMeTAD） as HTM under similar conditions. Further time-resolved photoluminescence （PL） measurements showed a fast charge transfer process at the perovskite/2.PA-2.DP interface. With the aid of electrochemical impedance spectra, a study of the electron blocking ability of 2.PA-2.DP in the device reveals that the presence of 2.PA-2.DP can greatly increase charge transfer resistance at the HTM/Au interface in the device, thus reducing the recombination. Furthermore, the perovskite solar cells based on these four HTMs exhibit ~ood stability after testin~ for one month.

关键词： perovskite solar cells organolead halide hole-transportingmaterials interfacial recombination

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Discovery of 4-arylthiophene-3-carboxylic acid as inhibitor of ANO1 and its effect as analgesic agent

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Acta Pharmaceutica Sinica B 2021年第7期11卷 1947-1964页

作者： Yuxi wang Jian Gao Song Zhao Yan Song Han Huang Guiwang {2. Peili Jiao Xiangqing xu Guisen Zhang Kewei wang Liangren Zhang Zhenming Liu State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical SciencesPeking UniversityBeijing 100191China Jiangsu Nhwa Pharmaceutical Co. Ltd.Xuzhou 221116China College of Life Science and technology Jiangsu Ocean UniversityLianyungang 222005China Department of Pharmacology School of PharmacyQingdao UniversityQingdao 266021China

Anoctamin 1(ANO1)is a kind of calcium-activated chloride channel involved in nerve ***1 inhibitors display significant analgesic activity by the local peripheral and intrathecal *** this study,several thiophenecarboxylic acid and benzoic acid derivatives were identified as novel ANO1 inhibitors through the shape-based virtual screening,among which the 4-arylthiophene-3-carboxylic acid analogues with the best ANO1 inhibitory activity were designed,synthesized and compound 42.IC;=0.79μmol/L)was finally *** 42.selectively inhibited ANO1 without affecting ANO2.and intracellular Ca;***,the analgesic effect was investigated by intragastric administration in pain *** 42.significantly attenuated allodynia which was induced by formalin and chronic constriction *** homology modeling and molecular dynamics,the binding site was predicted to be located near the calcium-binding region betweenα6 andα*** study validates ANO1 inhibitors having a significant analgesic effect by intragastric administration and also provides selective molecular tools for ANO1-related research.

关键词： ANO1(anoctamin 1,TMEM16A) Inhibitor Synthesis Structure-activity relationship Analgesia

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Elucidation of the sodium kinetics in layered P-type oxide cathodes

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Science china Chemistry 2022年第10期65卷 2005-2014页

作者： Lianzheng Yu Haojie Dong Yu-Xin Chang Zhiwei Cheng Kang xu Yi-Hu Feng Duo Si xu {2. Mengting Liu Bing Xiao Peng-Fei wang Sailong xu State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China Center of Nanomaterials for Renewable Energy State Key Laboratory of Electrical Insulation and Power EquipmentSchool of Electrical EngineeringXi’an Jiaotong UniversityXi’an 710049China

Sodium-ion intercalation oxides generally possess high compositional diversity according to their different stacking *** sodium diffusion pathway in layered P-type materials used in sodium-ion batteries is open,which can increase their rate capability by directly transmitting Na+between adjacent triangular prismatic channels,rather than passing through an intermediate tetrahedral site in O-type ***,how the structure chemistry of the P-type oxides determines their electrochemical properties has not been fully understood ***,by comparing the crystalline structures,electrochemical behaviors,ion/electron transport dynamics of a couple of P-type intercalation cathodes,P2.Na_(2.3)Ni1/3Mn_(2.3)O_(2.and P3-Na_(2.3)Ni_(1/3)Mn_(2.3)O_(2.with the same compositions,we demonstrate experimentally and computationally that the P2.phase delivers better cycling stability and rate capability than the P3 counterpart due to the predominant contribution of the faster intrinsic Na diffusion kinetics in the P2.*** also point out that it is the electronic conductivity that captures the key electrochemistry of layered P3-type materials and makes them possible to enhance the sodium storage *** results reveal that the correlation between stacking structure and functional properties in two typical layered P-type cathodes,providing new guidelines for preparing and designing alkali-metal layered oxide materials with improved battery performance.

关键词： sodium-ion batteries cathode P2.phase P3 phase kinetics

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火-储耦合系统深度调峰综合经济性分析

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储能科学与技术 2024年第10期13卷 3693-3705页

作者：张成凤朱轶林胡东子富征阳徐玉杰沈国清王亮陈海生华北电力大学能源动力与机械工程学院北京102206 中国科学院工程热物理研究所北京100190 华北电力大学能源动力与机械工程学院河北保定071003

火电机组耦合储热技术,可提高机组的热电解耦能力,减少深度调峰对系统安全性和经济性的影响。本工作提出了火电机组与填充床储热的耦合系统,在考虑了机组变工况、填充床储/释热过程动态时间序列基础上,通过EBSILON建立了耦合系统变工况... 详细信息

火电机组耦合储热技术,可提高机组的热电解耦能力,减少深度调峰对系统安全性和经济性的影响。本工作提出了火电机组与填充床储热的耦合系统,在考虑了机组变工况、填充床储/释热过程动态时间序列基础上,通过EBSILON建立了耦合系统变工况仿真模型;分析深度调峰对耦合系统热力性和碳排放量的影响,通过汽水分离器筒体应力变化分析深调对锅炉寿命损耗的影响,通过转子寿命损耗率曲线分析深调对汽轮机寿命的影响,最终建立耦合系统调度运行经济性模型,开展综合经济性分析。结果表明:火-储耦合系统比自身变工况减小碳排放量7418 t/a(仅配置风电)~92.6 t/a(仅配置光伏);深度调峰对锅炉寿命损耗的影响大于汽轮机,火-储耦合系统可提高系统运行寿命,深度调峰318次/年,相比于机组自身变工况(30%~2.%额定负荷)可提高13.3%~15.3%;火-储耦合系统深度调峰收益高于火电机组自身变工况,当填充床释热量用于发电或供热时,耦合系统比自身变工况收益分别增加40万元/年、72.元/年。

关键词：火电机组储热深度调峰综合经济性系统寿命碳排放

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