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Journal of Energy Chemistry 2024年第6期93卷 436-442,I0011页

作者： Xingrui Zhang Jian Zhang Wei Wang Boyuan Hu Yayu Dong Debin Xia Kaifeng Lin yulin yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina

Here,a novel strategy is proposed targeting the volatility of A-site cations and the disordered arrangement of perovskite grains through employing Cs~+contained metal-organic frameworks In-aip(Cs)obtained by ion-exchange and crystalline *** forces between Cs-O atoms split the pore channels of the pristine In-aip,endowing In-aip(Cs)with multidimensional charge transport channels,In addition,the partially freed Cs~+in the interlayer compensates for the vacancy of A-site cations during the perovskite preparation *** In-aip(Cs)modified perovskite films have a flat morphology,large grains and excellent optoelectronic *** from the high-quality perovskite films and faster charge extraction,the In-aip(Cs)-modified PSCs achieved a champion PCE of 23.03%,superior to the In-aip-modified(22.29%)and control device(21.13%),More importantly,the unencapsulated PSCs modified with In-aip(Cs)exhibited outstanding humidity and thermal *** a period of almost 1000 h,the unencapsulated In-aip(Cs)-modified device retained 85%of its initial PCE after storing in a glove box at 85℃,and retained 87%of the primary PCE upon storage in ambient condition at 25℃under a humidity of 40%.

关键词： Metal-organic frameworks PSCs Stability Defect passivation

Spatiotemporal Evolution and Linkage Analysis of Mutton Price in Xinjiang

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Journal of Systems Science and Information 2024年

作者： yulin yang Jian XU Lean YU School of Economics and Management University of Chinese Academy of Sciences Business School Sichuan University School of Business Shenzhen Institute of Technology

The mutton industry plays a pivotal role in the animal husbandry industry of Xinjiang Uygur Autonomous Region. To better monitor the volatility movement and risk warning of mutton price, the fluctuation characteristics of mutton prices and the future trend of prices are analyzed systematically. On the one hand, the Hodrick Prescott(HP) filter method is used to analyze the longterm trends and cyclical characteristics of mutton prices in Xinjiang and explored the spatial evolution characteristics of mutton price fluctuations in various regions of Xinjiang. On the other hand, the Threshold Auto-Regressive(TAR) model is used to analyze the linkage relationship between mutton prices and the prices of other livestock products. The empirical results show that(1) the overall volatility of mutton price in Xinjiang is high, showing a trend of rising first, then falling and then rising from the temporal perspective.(2) At the regional level, the price in the south is higher than that of the north, showing a decreasing trend from south to north on the whole from the spatial viewpoint.(3) From the linkage relationship perspective, mutton and beef are complementary in the short term,but they are substitutes each other in the long term. This paper explores the characteristics of mutton price fluctuations in Xinjiang from the single time series of mutton prices and the linkage with other livestock products, which provides a reliable basis for the monitoring and risk warning of mutton price fluctuation.

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Multifunctional MOF@COF Nanoparticles Mediated Perovskite Films Management Toward Sustainable Perovskite Solar Cells

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Nano-Micro Letters 2024年第9期16卷 195-208页

作者： Yayu Dong Jian Zhang Hongyu Zhang Wei Wang Boyuan Hu Debin Xia Kaifeng Lin Lin Geng yulin yang MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangPeople’s Republic of China School of Materials Science and Engineering East China Jiaotong UniversityNanchang 330013JiangxiPeople’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001HeilongjiangPeople’s Republic of China

Although covalent organic frameworks(COFs)with highπ-conjugation have recently exhibited great prospects in perovskite solar cells(PSCs),their further application in PSCs is still hindered by face-to-face stacking and aggregation ***,metal-organic framework(MOF-808)is selected as an ideal platform for the in situ homogeneous growth of a COF to construct a core-shell MOF@COF nanoparticle,which could effectively inhibit COF stacking and *** synergistic intrinsic mechanisms induced by the MOF@COF nanoparticles for reinforcing intrinsic stability and mitigating lead leakage in PSCs have been *** complementary utilization ofπ-conjugated skeletons and nanopores could optimize the crystallization of large-grained perovskite films and eliminate *** resulting PSCs achieve an impressive power conversion efficiency of 23.61%with superior open circuit voltage(1.20 V)and maintained approximately 90%of the original power conversion efficiency after 2000 h(30-50%RH and 25-30℃).Benefiting from the synergistic effects of the in situ chemical fixation and adsorption abilities of the MOF@COF nanoparticles,the amount of lead leakage from unpackaged PSCs soaked in water(<5 ppm)satisfies the laboratory assessment required for the Resource Conservation and Recovery Act Regulation.

关键词： Perovskite solar cells Covalent organic frameworks Metal-organic frameworks Lead leakage Stability

Elaborate Design of Two Novel Fluorescent Zinc-based Metal-Organic Frameworks for Highly Efficient Tetracycline Antibiotics Detection

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Chemical Research in Chinese Universities 2024年第3期40卷 499-507页

作者： TAO He JI Chengshan ZHANG Jian YIN Yuanyuan JIA Wenwen JIANG Xin XU Jie yang yulin MIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001P.R.China

The abuse of tetracycline antibiotics has caused great harm to human health and *** inexpensive,convenient and sensitive methods for the detection of tetracycline antibiotics is highly ***,based on the H_(4)ddp ligand[H_(4)ddp=3-(3,5-dicarboxyphenyl)pyridine-2,6-dicarboxylic acid],two novel zinc-based metal-organic frameworks(MOFs){[Zn_(3)(ddp)_(2)(H_(2)O)_(4)]·3H_(2)O}n(Zn1-ddp)and{[Zn_(3)(ddp)_(2)(H_(2)O)_(4)]·3H_(2)O}n(Zn2-ddp)were successfully designed by delicate structural *** Zn1-ddp and Zn2-ddp exhibited excellent water and chemical stability and showed excellent fluorescence quenching performance for tetracycline ***,the more advanced framework structure and better fluorescent performance make Zn1-ddp more sensitive than Zn2-ddp in fluorescent detection with a detection limit of 0.29µmol/L for tetracycline(TC),0.09µmol/L for doxycycline(DOX),0.10µmol/L for minocycline(MIN)and metacycline(MEL),0.19µmol/L for chlortetracycline(CTC),and 0.67µmol/L for oxytetracycline(OTC)among tetracycline *** fluorescence quenching mechanism of Zn1-ddp and Zn2-ddp for tetracycline antibiotics detection was deeply *** reasons for the superior detection performance of Zn1-ddp over Zn2-ddp were also analyzed in depth through Fourier transform infrared spectrophotometry(FTIR),X-ray photoelectron spectroscopy(XPS)analysis and framework structure *** developed method opens up a new perspective for antibiotics detection based on zinc-based MOFs.

关键词： Water system Metal-organic framework Fluorescent detection Tetracycline antibiotic

Dual-functional POM@IL complex modulate hole transport layer properties and interfacial charge dynamics for highly efficient and stable perovskite solar cells

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Chinese Chemical Letters 2024年第7期35卷 461-464页

作者： Boyuan Hu Jian Zhang yulin yang Yayu Dong Jiaqi Wang Wei Wang Kaifeng Lin Debin Xia MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China

The severe interfacial charge recombination as well as the stability issues brought by the Li-TFSI still hinder the commercialization of high-performance perovskite solar cells(PSCs).Here,a polyoxometalates(POMs)-based complex,POM@ionic liquid(IL),is synthesized and applied as an effective additive that simultaneously enhances the performance and stability of *** interactions between POM@IL complex and Li-TFSI inhibit the aggregation of *** synergistic oxidation of POM@IL complex and Li-TFSI towards 2,2,7,7-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene(Spiro-OMeTAD)effectively enhances the electrical properties of hole transport layer film and the photovoltaic performances of *** champion device modified with the POM@IL complex yields an excellent power conversion efficiency(PCE)of 22.73%.Moreover,the incorporation of POM@IL improves the humidity stability of *** storing under high humidity conditions(25℃,60%RH)for 1200 h,the POM@IL modified device retained a remarkable 81.2%of its initial *** work provides new insight into constructing POMs-based materials for high-performance photovoltaic devices.

关键词： Polyoxometalates Ionic liquid Perovskite solar cells Energy alignment Humidity stability

HAN基电控固体推进剂电化学性能对燃烧性能的影响

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固体火箭技术 2024年第3期47卷 341-347页

作者：郭昊琪杨玉林哈尔滨工业大学化工与化学学院哈尔滨150001

硝酸羟胺(HAN)基电控固体推进剂是一种以HAN为主要氧化剂的新型智能推进剂,通过外加电源控制其燃烧速率与启停。为探索电化学性能与燃烧性能间的关系,在研究推进剂的离子迁移率、过电位的变化规律的基础上,将其与推进剂的点火电压、点... 详细信息

硝酸羟胺(HAN)基电控固体推进剂是一种以HAN为主要氧化剂的新型智能推进剂,通过外加电源控制其燃烧速率与启停。为探索电化学性能与燃烧性能间的关系,在研究推进剂的离子迁移率、过电位的变化规律的基础上,将其与推进剂的点火电压、点火延迟进行关联。研究发现,推进剂在外加低电压(1.6~2.8 V)刺激下,离子迁移率与电压大小正相关,推进剂基体的改良在提高离子迁移率方面的效果大于离子掺杂。在燃烧性能方面,离子迁移率影响点火电压,过电位决定点火延迟;离子迁移率越高,点火时,推进剂的电流密度与反应活性越高;当迁移率由0.09 mm^(2)·s^(-1)·V^(-1)升高至0.16 mm^(2)·s^(-1)·V^(-1)时,点火电压由210 V降至70 V,有利于拓宽电控固体推进剂的应用范围;点火电压一定时,推进剂过电位越小,电分解速率越大,点火延迟越小,当过电位由0.67 V降至0.51 V时,点火延迟由1.68 s降至0.31 s,有利于推进剂满足快速响应的战略需求。

关键词：电控固体推进剂硝酸羟胺离子迁移率过电位电控燃烧

民主“元问题”的回归:全过程人民民主对实现民主真正价值的贡献

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湖湘论坛 2024年第2期37卷 81-90页

作者：杨雨林中共四川省委党校科学社会主义教研部四川成都610072

民主概念自衍生以来,关于“民主是什么、为了什么”“好民主”如何评定等系列问题就一直争论不休,当代西方民主更是陷入了逻辑悖论与治理危机的双重困境。倡导民主“元问题”的回归,就是为了在纷繁复杂的观念之争中正本清源,通过价值诠... 详细信息

民主概念自衍生以来,关于“民主是什么、为了什么”“好民主”如何评定等系列问题就一直争论不休,当代西方民主更是陷入了逻辑悖论与治理危机的双重困境。倡导民主“元问题”的回归,就是为了在纷繁复杂的观念之争中正本清源,通过价值诠释、效能彰显、形态塑造、话语阐释等一系列领域的革新与变革,让促进经济发展、推动社会进步、以良政善治满足人民对美好生活的向往和追求的民主真正价值,在理论逻辑和实践导向上再次“复位”。基于历史唯物主义的考察,全过程人民民主拥有实现人民当家作主的经济基础,创造了民主与善治有机结合、相互促进的关系,丰富了人类政治文明形态,开创了民主话语新叙事,与倡导民主“元问题”的回归具有内在一致性。坚持和发展全过程人民民主是一项长期而艰巨的历史任务,要不断完善各项制度安排,巩固和保障人民当家作主的有效实现。

关键词：全过程人民民主民主“元问题” 民主真正价值

局部雌激素治疗女性盆底功能障碍性疾病的研究进展

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医学综述 2024年第14期30卷 1700-1705页

作者：杨钰琳方克伟昆明医科大学第二附属医院泌尿外科昆明650101

女性盆底功能障碍性疾病(PFD)是影响中老年女性生活质量的主要疾病之一,对患者的日常生活、社会活动及心理健康均有负面影响。PFD的治疗方法较多,但其疗效个体差异较大。PFD的发病机制复杂,其中衰老是影响盆腔器官、盆底肌和结缔组织以... 详细信息

女性盆底功能障碍性疾病(PFD)是影响中老年女性生活质量的主要疾病之一,对患者的日常生活、社会活动及心理健康均有负面影响。PFD的治疗方法较多,但其疗效个体差异较大。PFD的发病机制复杂,其中衰老是影响盆腔器官、盆底肌和结缔组织以及下尿路结构和功能的核心因素,其发生发展机制与雌激素缺乏有关。雌激素疗法通过外源性补充雌激素减轻围绝经期女性雌激素缺乏症状,对PFD患者同样适用。由于全身使用雌激素副作用较多,寻找更为安全的雌激素补充方式对治疗PFD具有重要意义,局部雌激素治疗有望成为PFD患者的新选择。

关键词：盆底功能障碍性疾病女性雌激素缺乏衰老雌激素治疗

不同强化训练对脑性瘫痪儿童上肢运动功能效果的网状Meta分析

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中国康复理论与实践 2024年第4期30卷 437-448页

作者：崔甜甜杨钰琳崔腾腾马丽虹山东中医药大学康复医学院山东济南市250355 山东第二医科大学康复医学院山东潍坊市261100

目的系统评价上肢强化训练对脑瘫儿童上肢运动功能的效果。方法构建PICO架构,检索PubMed、Embase、Cochrane Library、Scopus、Web of Science、中国知网、中国生物医学文献数据库、维普和万方数据库,搜集关于上肢强化训练改善脑瘫儿童... 详细信息

目的系统评价上肢强化训练对脑瘫儿童上肢运动功能的效果。方法构建PICO架构,检索PubMed、Embase、Cochrane Library、Scopus、Web of Science、中国知网、中国生物医学文献数据库、维普和万方数据库,搜集关于上肢强化训练改善脑瘫儿童上肢运动功能的随机对照试验,检索时限均为2010年1月至2024年3月。按照Cochrane系统评价手册和物理治疗证据数据库量表对纳入文献进行质量评价,由2名研究者独立筛选文献、提取资料并评价纳入研究的偏倚风险后,采用RevMan 5.4和Stata 17.0进行网状Meta分析。结果共纳入27篇文献,包括1173例患者,涉及3种上肢强化训练。强制性运动疗法、改良强制性运动疗法和手-臂双侧强化训练均可提高辅助手功能评分与Peabody精细运动功能评分;强制性运动疗法和改良强制性运动疗法可提高上肢技能质量量表评分;手-臂双侧强化训练可提高儿童生活功能量表评分。在提高辅助手功能、上肢技能质量量表评分和Peabody精细运动功能评分方面,强制性运动疗法为最佳干预方式;在提高儿童生活功能量表评分方面,手-臂双侧强化训练为最佳干预方式。结论上肢强化训练可显著改善脑瘫儿童的上肢运动功能、精细运动功能和日常生活活动能力,强制性运动疗法在改善上肢运动功能和精细运动功能方面效果最好,手-臂双侧强化训练在提高日常生活活动能力方面疗效最佳。

关键词：脑性瘫痪上肢强化训练强制性运动疗法运动功能网状Meta分析

激光熔覆CoCrFeNiTi高熵合金工艺优化及预测模型研究

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表面技术 2024年第11期53卷 205-216页

作者：吴文宁孙文磊刘志远于江通杨玉林黄勇新疆大学机械工程学院乌鲁木齐830017 新疆工程学院机电工程学院乌鲁木齐830091

目的探究激光熔覆工艺参数对CoCrFeNiTi高熵合金涂层质量及形貌的影响,实现激光熔覆CoCrFeNiTi高熵合金涂层形貌的精确控制。方法基于田口正交法,设计不同激光工艺参数下30CrMnSiA表面激光熔覆CoCrFeNiTi高熵合金实验,以激光功率、扫描... 详细信息

目的探究激光熔覆工艺参数对CoCrFeNiTi高熵合金涂层质量及形貌的影响,实现激光熔覆CoCrFeNiTi高熵合金涂层形貌的精确控制。方法基于田口正交法,设计不同激光工艺参数下30CrMnSiA表面激光熔覆CoCrFeNiTi高熵合金实验,以激光功率、扫描速度、送粉速率为影响因素,以涂层稀释率、高度、宽度、裂纹密度、宽高比为响应目标,通过方差和信噪比分析影响因素与响应目标的关系,并确定最优工艺参数,建立工艺参数与CoCrFeNiTi高熵合金涂层性能和形貌的支持向量回归预测模型。结果激光功率对熔覆层稀释率、宽度和裂纹密度的影响较大,且与熔覆层稀释率、高度、宽度、裂纹密度、宽高比呈正相关。扫描速度对涂层高度、裂纹密度和宽高比的影响较大,与涂层高度呈负相关,与涂层裂纹密度和宽高比呈正相关。送粉速率对熔覆层稀释率、高度和宽高比的影响较大,与熔覆层稀释率和高度呈负相关,与熔覆层宽高比呈正相关。得到了最优工艺参数,激光功率为600 W,扫描速度为18 mm/s,送粉速率为1.6 r/min。通过预测模型测试可知,熔覆层稀释率、高度、宽度、裂纹密度和宽高比预测模型的决定系数均大于0.93。结论基于支持向量回归的CoCrFeNiTi高熵合金涂层形貌预测模型的精度较高,能够实现CoCrFeNiTi高熵合金熔覆层形貌的精确预测,为熔覆层形貌的控制提供了新的思路。

关键词：激光熔覆 CoCrFeNiTi 工艺参数方差分析信噪比支持向量回归预测模型