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Dual bulk and interface engineering with ionic liquid for enhanced performance of ambient-processed inverted CsPbI 3 perovskite solar cells

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Journal of Materials Science & Technology 2022年第19期114卷 165-171页

作者： Kun Wang Zeyuan Su Yali Chen Heng Qi Ting Wang Hao Wang Youqian Zhang Li Cao qian ye Fobao Huang Yu Tong Hongqiang Wang School of Microelectronics Northwestern Polytechnical UniversityXi’an 710072China Shenzhen Research Institute of Northwestern Polytechnical University Shenzhen 518057China State Key Laboratory of Solidification Processing Center for Nano Energy MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China

All-inorganic cesium lead iodide(CsPbI_(3))perovskites with superior thermal stability are attractive candidates for perovskite solar cells(PSCs).Fabricating such inorganic PSCs in the ambient atmosphere is desirable for practical production,however,the challenge remains in inhibiting the phase transition of CsPbI_(3) in ambient ***,we demonstrate a dual bulk and interface engineering using ionic liquid to stabilize CsPbI_(3) perovskite structure,thus enhancing the performance of ambient-processed inverted CsPbI_(3) *** dual bulk and interface engineering is found effective not only in suppressing the bulk and interfacial charge carrier recombination and enhancing charge carrier transport and extraction,but also in protecting CsPbI_(3) crystal structure by leaving hydrophobic alkyl chains coverage at the boundary and surface to prevent phase transition caused by moisture from ambient *** optimized device fully processed in the open air with relative humidity up to 55%exhibits remarkably enhanced efficiency and stability over the control device,with the efficiency increasing from 8.6%to 13.21%,and 92%efficiency maintaining after storage for 1680 h,which outperforms the control device with only 82%retaining after 648 h *** thus believe this work can provide an efficient alternative for the low-cost fabrication of ambient-processible PSCs.

关键词： CsPbI 3 Ionic liquid Bulk and interface Ambient-processed Inverted solar cells

Strong Antiferromagnetic Exchange-Coupling Observed in Hydride-Bridged Dimeric Dysprosium(Ⅲ)Single-Molecule Magnet

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Chinese Journal of Chemistry 2024年第4期42卷 391-396页

作者： qian-Cheng Luo Ke-Xin Yu Peng-Bo Jin ye-ye Liu Yuan-Qi Zhai Yan-Zhen Zheng Frontier Institute of Science and Technology State Key Laboratory of Electrical Insulation and Power EquipmentXi'an Key Laboratory of Electronic Devices and Materials ChemistrySchool of Chemistry and School of PhysicsXi'an Jiaotong University99 Yanxiang RoadXi'anShaanxi710054 China

One dihydride-bridged dimeric Dy(Ⅲ)guanidinate complex,formulated as[{(Me_(3)Si)_(2)NC(NiPr)_(2)}_(2)Dy(μ-H)]_(2)(1Dy),was successfully isolated and the introduction of hydride bridges significantly reduces the intramolecular Dy(Ⅲ)…Dy(Ⅲ)distance to only 3.688(1)Å.To investigate the effect of such a short Dy(Ⅲ)…Dy(Ⅲ)distance on magnetism,we also prepared its dibromide-bridged analogue[{(Me_(3)Si)_(2)NC(NiPr)_(2)}_(2)Dy(μ-Br)]_(2)(2Dy),which has a much longer Dy(Ⅲ)…Dy(Ⅲ)distance of 4.605(4)Å.Surprisingly,2Dy demonstrates much larger effective energy barrier for magnetization reversal(U_(eff))and higher blocking temperature(T_(B)).The worse performance of 1Dy is attributed to the concerted effect of strong antiferromagnetic interactions between Dy(Ⅲ)ions(J_(total)=–2.683 cm^(–1))and the unparallel arrangement of magnetic principle axes of the Dy(Ⅲ)ions for 1Dy.

关键词： Single-molecule magnets Lanthanides Guanidinate ligand Hydride bridge Magnetic properties Ab initio calculations

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钢筋混凝土结构梁柱节点滞回性能对比分析

新型建筑材料 2024年第2期51卷 33-38,62页

作者：高路恒钱野徐卫星希加艾提·肖合来提江苏工程职业技术学院建筑工程学院江苏南通226007 南通市建设工程质量监督站江苏南通226007 克孜勒苏职业技术学院新疆克州845350

为验证装配式强化梁柱节点与传统梁柱节点在受力和抗震性能方面的区别,借助ABAQUS的非线性分析功能分别建立了传统梁柱节点和装配式强化梁柱节点有限元模型,选择了合理的参数,分析了二者的破坏形态和滞回性能。结果表明:在相同荷载作用... 详细信息

为验证装配式强化梁柱节点与传统梁柱节点在受力和抗震性能方面的区别,借助ABAQUS的非线性分析功能分别建立了传统梁柱节点和装配式强化梁柱节点有限元模型,选择了合理的参数,分析了二者的破坏形态和滞回性能。结果表明:在相同荷载作用下,传统梁柱节点模型中的部分钢筋已发生破坏,强化梁柱节点中的钢筋未破坏,只部分钢筋进入塑性变形阶段,且通过滞回曲线对比显示:强化梁柱节点曲线的包络面积明显大于传统梁柱节点,说明了装配式强化梁柱节点的耗能能力更好。装配式强化梁柱节点设计的刚度、承载力和耗能能力均优于传统梁柱节点。

关键词：钢筋混凝土结构梁柱节点 ABAQUS有限元本构模型滞回性能

Linkage and association mapping of wild soybean(Glycine soja)seeds germinating under salt stress

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Journal of Integrative Agriculture 2022年第10期21卷 2833-2847页

作者： SHI Mei-qi LIAO Xi-liang ye qian ZHANG Wei LI Ya-kai Javaid Akhter BHAT KAN Gui-zhen YU De-yue National Key Laboratory of Crop Genetics and Germplasm Enhancement National Center for Soybean ImprovementNanjing Agricultural UniversityNanjing 210095P.R.China Innovative Center of Molecular Genetics and Evolution School of Life SciencesGuangzhou UniversityGuangzhou 510405P.R.China

Salinity threatens soybean germination,growth and *** germination stage is a key period in the life of *** soybean contains many genes related to stress resistance that are valuable resources for the genetic improvement of *** identify the genetic loci of wild soybean that are active during seed germination under salt stress,two populations,a soybean interspecific hybrid population comprising 142 lines and a natural population comprising 121 wild soybean accessions,were screened for three germination-related traits in this *** using single-nucleotide polymorphism(SNP)markers with three salt tolerance indices,25 quantitative trait loci(QTLs),21 significant SNPs(–log_(10)(P)≥4.0)and 24 potential SNPs(3.5<–log_(10)(P)<4.0)were detected by linkage mapping and a genome-wide association study(GWAS)in two *** key genetic region was identified based on these SNPs and *** to the gene functional annotations of the W05 genome and salt-induced gene expression qRT-PCR analysis,GsAKR1 was selected as a candidate gene that responded to salt stress at the germination stage in the wild *** results could contribute to determining the genetic networks of salt tolerance in wild soybean and will be helpful for molecular marker-assisted selection in the breeding of salt-tolerant soybean.

关键词： salt tolerance wild soybean QTLs GWAS GsAKR1

Identification of novel bioactive proanthocyanidins with potent antioxidant and anti-proliferative activities from kiwifruit leaves

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Food Bioscience 2022年第2期46卷 539-549页

作者： Ji-Min Lv Mostafa Gouda Alaa El-Din Bekhit Ya-Ke He Xing-qian ye Jian-Chu Chen College of Biosystems Engineering and Food Science National-Local Joint Engineering Laboratory of Intelligent Food Technology and EquipmentZhejiang Key Laboratory for Agro-Food ProcessingZhejiang Engineering Laboratory of Food Technology and EquipmentZhejiang UniversityHangzhou310058China Department of Nutrition and Food Science National Research CentreDokki12622GizaEgypt Department of Food Science University of OtagoOtagoNew Zealand

Agro-wastes contribute major social,economic,and environmental challenges for food production and circular economy *** current increasing demand for clean label food production and use of natural bioactive compounds could turn these challenges into opportunities providing avenues for proper utilization of agro-wastes to produce valuable *** study aimed to investigate the potential use of kiwifruit(Actinidia chinensis)leaves as a source of proanthocyanidins(PAs)bioactive phenolic *** leaves PAs were extracted,purified,identified,and evaluated for their antioxidant and anti-proliferative *** structural composition of the purified PAs was characterized using HPLC-QTOF-MS/MS and *** results showed that purified kiwifruit leaves PAs(PKLPs)comprised mainly procyanidins,propelargonidins,and prodelphindins ranging from dimers to hexamers with(epi)catechin as terminal units and(epi)afzelechin or(epi)gallocatechin as dominant extension *** study reports the structure of novel PKLPs monomer fractions was unique compared to the PAs that extracted from the other plant *** PKLPs exhibited higher phenolic content than the skin and flesh of several kiwifruit ***,the PKLPs exhibited higher in vitro antioxidant activity in chemical-based(DPPH,ABTS,and FRAP)assays and H2O2-induced injury cell model than ascorbic,Trolox,and catechin(p<0.01).A remarkable dose-dependent anti-proliferation activity(IC_(50)=186.04±2.61μg/mL)against HepG2 cells was *** conclusion,this study demonstrated that kiwifruit leaves waste could serve as a sustainable and low-cost source of PAs,a group of multi-functional bioactive compounds that plays a key role in the food and pharmaceutical industries.

关键词： Proanthocyanidins Agro-waste valorisation HPLC-QTOF-MS/MS Antioxidant potential Anti-proliferative activity

Investigation on cavitating turbulent flow for the twisted NACA66 hydrofoil using a PANS model with helicity modification

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Journal of Hydrodynamics 2024年第2期36卷 219-231页

作者： Chen Geng Zhao-hui qian Ke-xin Zheng Wei-xiang ye Xian-wu Luo State Key Laboratory of Hydroscience cand Engineering Deparment of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

In the present paper,the unsteady cavitating turbulent flow over the twisted NACA66 hydrofoil is investigated based on an modified shear stress transfer k-ωpartially averaged Navier-Stokes(MSST PANS)model,i.e.,new MSST PANS(NMSST PANS)model,where the production term of kinetic energy in the turbulence model is modified with *** with the experimental data,cavitation evolution and its characteristic frequency are satisfactorily predicted by the proposed NMSST PANS *** is revealed that the interaction among the main flow,the reentrant jets,and sheet cavitation causes the formation of the primary shedding cavity near the mid-span and the secondary shedding cavity at each side of the twisted hydrofoil,and further induces the remarkable pressure gradient around shedding *** with the development of the primary and the secondary shedding cavities,the great pressure gradient associated with large cavity volume variation promotes the vortical flow generation and the spatial deformation of vortex structure during cavitation evolution,and results in the primary and the secondary U-type ***,dynamic mode decomposition(DMD)analysis is utilized to confirm the interaction among the main flow,the main reentrant jet and two side reentrant jets,and *** results indicate that the proposed NMSST PANS model is suitable to simulate the complicated cavitating turbulent flow for various engineering applications.

关键词： Cavitating turbulent flow partially averaged Navier-Stokes(PANS)model hydrofoil numerical simulation

Multi-endpoint assays reveal more severe toxicity induced by chloraminated effluent organic matter than chloraminated natural organic matter

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Journal of Environmental Sciences 2024年第1期135卷 310-317页

作者： Hai-Yan Wang De-Xiu Wu ye Du Xiao-Tong Lv qian-Yuan Wu State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China Environmental Protection Key Laboratory of Microorganism Application and Risk Control Guangdong Provincial Engineering Research Center for Urban Water Recycling and Environmental SafetyTsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China College of Architecture and Environment Sichuan UniversityChengdu 610000China

Disinfection by chloramination produces toxic byproducts and the difference in toxicity of reclaimed and drinking water treated by chloramination remains *** study investigated cytotoxic effects at the same concentrations of dissolved organic matter and showed that chloraminated effluent organic matter(EfOM)induced 1.7 times higher cytotoxicity than chloraminated natural organic matter(NOM)applied to simulate drinking *** EfOM induced more reactive nitrogen species than chloraminated NOM,and chloraminated EfOM and NOM induced similar and higher levels of reactive oxygen species than the negative control,***,intracellular macromolecule damage indicated by DNA/RNA damage marker 8–hydroxy-(deoxy)guanosine and the intracellular protein carbonyl concentration induced by chloraminated EfOM was higher and slightly more than that induced by chloraminated NOM,*** data were consistent with the effects on cell physiological *** cycle arrest mainly occurred in G2 phase by chloraminated EfOM and *** apoptotic cells,which could return to normal,increased upon exposure to high concentrations of chloraminated EfOM and ***,necrotic cells were significantly increased from 0.5%to 2.5%when the concentration increased from 20-to 60-fold chloraminated EfOM,but were not obviously changed by chloraminated *** results indicated that the comprehensive intracellular changes induced by toxic substances in chloraminated EfOM were more irreversible and induced more cell death than chloraminated NOM.

关键词： Cytotoxicity Intracellular active nitrogen/oxygen Intracellular oxidative damage Cell necrosis Reclaimed water

游离背阔肌皮瓣临床解剖及其在头颈部巨大缺损修复中的应用

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上海口腔医学 2024年第3期33卷 269-272页

作者：钱叶梅王卫红朱瑾何永静许彪邹智荣施延安罗磊李静宜昆明医科大学附属口腔医院口腔颌面外科云南省口腔医学重点实验室云南昆明650106 昆明医科大学第二附属医院整形外科云南昆明650000 昆明医科大学基础医学院解剖教研室云南昆明650500

目的 :探讨游离背阔肌皮瓣修复头颈部巨大缺损的可行性及修复效果。方法 :在尸体上模拟解剖制备背阔肌皮瓣,使用Image-Pro Plus 6.0软件进行测量,评估修复头颈部巨大缺损的可行性。回顾分析2011年5月—2022年9月使用游离背阔肌皮瓣修复... 详细信息

目的 :探讨游离背阔肌皮瓣修复头颈部巨大缺损的可行性及修复效果。方法 :在尸体上模拟解剖制备背阔肌皮瓣,使用Image-Pro Plus 6.0软件进行测量,评估修复头颈部巨大缺损的可行性。回顾分析2011年5月—2022年9月使用游离背阔肌皮瓣修复的7例头颈部巨大缺损患者的临床资料,评价其修复效果。结果:尸体标本中制备的背阔肌皮瓣动、静脉血管蒂平均长度分别为(85.5±10.5) mm和(104±4.2) mm,胸背动脉起始外径为(4.03±0.56) mm。7例患者中,5例为头皮缺损,2例为颈部缺损。7例背阔肌皮瓣全部成活,供区无明显术后并发症。结论:背阔肌皮瓣组织量丰富,静脉回流充分,血管蒂长度充足,是修复头颈部巨大缺损的理想肌皮瓣。

关键词：背阔肌皮瓣背阔肌解剖头颈部巨大缺损重建 Image-Pro Plus 6.0软件

Monsoonal oscillation revealed by the upper-troposphere water vapor band brightness temperature

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Chinese Science Bulletin 1998年第17期43卷 1489-1494页

作者： Weihong qian qian ye Yafen Zhu Peking Univ Dept Geophys Beijing 100871 Peoples R China Chinese Acad Sci Inst Atmospher Phys Beijing 100029 Peoples R China

The measurements of brightness temperature (BT) from the upper-troposphere water vapor channel 12 of the National Oceanic and Atmospheric Administration polar satellites from 1979 through 1995 are used to analyze the interannual variations of the global monsoon strength. Results show that in the interannual time-sclae the BT variability in the equatorial eastern Pacific (EEP) is out of phase with the BT variabilities in other four regions, i.e. South Asia, tropical south American, two subtropical areas in the South and North Pacific. The BT interannual variation mode may be called monsoonal oscillation (MO). The MO is the result of the atmospheric circulation anomaly in the troposphere.

关键词： monsoonal oscillation brightness temperature interannual variability.