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Ligand Engineering Achieves Suppression of Temperature Quenching in Pure Green Perovskite Nanocrystals for Efficient and Thermostable Electroluminescence

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Nano-Micro Letters 2025年第4期17卷 25-38页

作者： Kaiwang Chen Qing du Qiufen Cao chao du Shangwei Feng Yutong Pan Yue Liang Lei Wang Jiangshan Chen Dongge Ma Institute of Polymer Optoelectronic Materials and Devices Guangdong Basic Research Center of Excellence for Energy&Information Polymer MaterialsState Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Luminescence From Molecular AggregatesSouth China University of TechnologyGuangzhou 510640People’s Republic of China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China

Formamidinium lead bromide(FAPbBr_(3))perovskite nanocrystals(NCs)are promising for display and lighting due to their ultra-pure green ***,the thermal quenching will exacerbate their performance degradation in practical applications,which is a common issue for halide ***,we reported the heat-resistant FAPbBr_(3)NCs prepared by a ligand-engineered room-temperature synthesis *** aromatic amine,specificallyβ-phenylethylamine(PEA)or 3-fluorophenylethylamine(3-F-PEA),was incoporated as the short-chain ligand to expedite the crystallization rate and control the size distribution of FAPbBr_(3)*** this ligand engineering approach,we synthesized high quality FAPbBr_(3)NCs with uniform grain size and reduced long-chain alkyl ligands,resulting in substantially suppressed thermal quenching and enhanced carrier transportation in the perovskite NCs *** notably,more than 90%of the room temperature PL intensity in the 3-F-PEA modified FAPbBr_(3)NCs film was preserved at 380 ***,we fabricated ultra-pure green EL devices with a room temperature external quantum efficiency(EQE)as high as 21.9%at the luminance of above 1,000 cd m^(-2),and demonstrated less than 10%loss in EQE at 343 *** study introduces a novel room temperature method to synthesize efficient FAPbBr_(3)NCs with exceptional thermal stability,paving the way for advanced optoelectronic device applications.

关键词： Perovskite nanocrystals Ligands engineering Thermal quenching Ultra-pure green emission Light-emitting diodes

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Power synchronization: taming massive diversified serverless functions under power constraints

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Science China(Information Sciences) 2025年第03期68卷 47-65页

作者： du LIU Lu ZHANG Yechen XU Xinkai WANG Lingyu SUN Yifei PU Xiaofeng HOU chao LI Minyi GUO Department of Computer Science and Engineering Shanghai Jiao Tong University AI Chip Center for Emerging Smart Systems The Hong Kong University of Science and Technology

Carbon neutrality has become an important design objective worldwide. However, the on-going shift to cloud-naive era does not necessarily mean energy efficiency. From the perspective of power management, co-hosted serverless functions are difficult to tame. They are lightweight, short-lived applications sensitive to power capping activities. In addition, they exhibit great individual and temporal variability, presenting idiosyncratic performance/power scaling goals that are often at odds with one another. To date, very few proposals exist in terms of tailored power management for serverless platforms. In this work, we introduce power synchronization, a novel yet generic mechanism for managing serverless functions in a power-efficient way. Our insight with power synchronization is that uniform application power behavior enables consistent and uncompromised function operation on shared host machines. We also propose PowerSync, a synchronization-based power management framework that ensures optimal efficiency based on a clear understanding of functions. Our evaluation shows that PowerSync can improve the energy efficiency of functions by up to 16% without performance loss compared to conventional power management strategies.

关键词： serverless computing variability energy efficiency power management power synchronization

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Integrating well logs, 3D seismic, and earthquake data for comprehensive prediction of 3D in-situ stress orientations: A case study from the Weiyuan area in the Sichuan Basin, China

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Petroleum Science 2025年第1期22卷 210-221页

作者： Huan Cao Yang Zhao Hai-chao Chen Le-Le Zhang Cheng-Gang xian Ji-Dong Yang Lu Liu State Key Laboratory of Petroleum Resources and Engineering and Unconventional Petroleum Research Institute China University of Petroleum (Beijing) Department of Geophysics China University of Petroleum (East China) Aramco Beijing Research Center Aramco Asia

Determining the orientation of in-situ stresses is crucial for various geoscience and engineering applications. Conventional methods for estimating these stress orientations often depend on focal mechanism solutions(FMSs) derived from earthquake data and formation micro-imager(FMI) data from well ***, these techniques can be costly, depth-inaccurate, and may lack spatial coverage. To address this issue, we introduce the use of three-dimensional(3D) seismic data(active sources) as a lateral constraint to approximate the 3D stress orientation field. Recognizing that both stress and fracture patterns are closely related to seismic velocity anisotropy, we derive the orientation of azimuthal anisotropy from multi-azimuth 3D seismic data to compensate for the lack of spatial stress orientation information. We apply our proposed workflow to a case study in the Weiyuan area of the Sichuan Basin, China, a region targeted for shale gas production. By integrating diverse datasets, including 3D seismic, earthquakes, and well logs, we develop a comprehensive 3D model of in-situ stress(orientations and magnitudes). Our results demonstrate that the estimated anisotropy orientations from 3D seismic data are consistent with the direction of maximum horizontal principal stress(SHmax) obtained from FMIs. We analyzed 12earthquakes(magnitude > 3) recorded between 2016 and 2020 for their FMSs and compressional axis(Paxis) orientations. The derived SHmax direction from our 3D stress model is 110°ES(East-South), which shows excellent agreement with the FMSs(within 3.96°). This close alignment validates the reliability and precision of our integrated method for predicting 3D SHmax orientations.

关键词： In-situ stress orientation SHmax Azimuthal velocity anisotropy Focal source mechanism Formation micro-imager

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分析生源多元化趋势下高职教育基础课教学改革

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黑龙江教育学院学报 2017年第9期36卷 52-54页

作者：杜朝仙江阴职业技术学院江苏江阴214405

现阶段,为进一步推动我国教育事业的创新发展,高职院校数量与规模呈现出正比趋势,且朝着生源多元化趋势创新变革。生源多元化模式的出现,改变了高职教育单一模式,但是从某个角度分析,因为学生之间差异较大,学习能力以及学习方法不同,传... 详细信息

现阶段,为进一步推动我国教育事业的创新发展,高职院校数量与规模呈现出正比趋势,且朝着生源多元化趋势创新变革。生源多元化模式的出现,改变了高职教育单一模式,但是从某个角度分析,因为学生之间差异较大,学习能力以及学习方法不同,传统的高职教育模式无法适应其发展要求,故需要加强变革。鉴于此,主要从生源多元化角度入手,着重探究现阶段高职教育基础课存在的缺陷,并提出相关的建议与改革对策,旨在提升我国高职教育基础课教学改革的创新性与有效性。

关键词：生源多元化高职教育基础课程教学改革

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Four-wave mixing Bragg scattering for small frequency shift from silicon coupled microrings

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Chinese Physics B 2025年第1期34卷 351-355页

作者： Chang Zhao chao Wu Pingyu Zhu Yuxing du Yan Wang Miaomiao Yu Kaikai Zhang Ping Xu Institute for Quantum Information&State Key Laboratory of High Performance Computing College of Computer Science and TechnologyNational University of Defense TechnologyChangsha 410073China

Frequency conversion is pivotal in nonlinear optics and quantum optics for manipulating and translating light signals across different wavelength *** frequency conversion between two light beams with a small frequency interval is a central *** this work,we design a pair of coupled silicon microrings wherein coupled-induced modesplitting exists to achieve a small frequency shift by the process of four-wave mixing Bragg *** an example,the signal can be up or down converted to the idler which is 15.5 GHz spaced when two pumps align with another pair of split *** results unveil the potential of coupled microring resonators for small interval frequency conversion in a high-fidelity,all-optical,and signal processing quantum frequency interface.

关键词： four-wave mixing Bragg scattering silicon coupled microrings

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Retrospective analysis of delta hemoglobin and bleeding-related risk factors in pancreaticoduodenectomy

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World Journal of Gastrointestinal Surgery 2025年第3期17卷 229-239页

作者： Yi-Min Lin chao Yu Guo-Zhe xian Department of Hepatobiliary Surgery Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021Shandong ProvinceChina Department of Emergency Surgery Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinan 250011Shandong ProvinceChina

BACKGROUND Objective and accurate assessment of blood loss during pancreaticoduodenectomy(PD)is crucial for ensuring the safety and efficacy of the *** the visual method remains the most common clinical metric,many scholars argue that it significantly differs from actual blood loss and is inherently *** To assess blood loss in PD via delta hemoglobin(ΔHb)and compare it with the visual method to predict bleeding-related risk *** In this retrospective analysis,1722 patients who underwent PD from 2017 to 2022 at Shandong Provincial Hospital were divided into three groups:Open PD(OPD),laparoscopic PD(LPD),and conversion to OPD(CTOPD).IntraoperativeΔHb(IΔHb)was calculated via preoperative and 72-hour-postoperative hemoglobin concentrations,and its association with visually obtained estimated blood loss(EBL)was ***ΔHb(PΔHb)was calculated via preoperative and predischarge hemoglobin *** compared the differences in IΔHb and PΔHb among the three groups,and performed univariate and multi-variate regression analyses of IΔHb and PΔ*** The preoperative general information of patients showed no statistically si-gnificant difference among the three groups(P>0.05).The IΔHb in the OPD,LPD,and CTOPD groups were 22.00(12.00,36.00),21.00(10.00,33.00),and 33.00(18.12,52.24)g/L,respectively;And the PΔHb in the OPD,LPD,and CTOPD groups were 25.87(13.51,42.00),25.00(14.00,45.00),and 37.48(21.64,59.65)g/L,respectively,values significantly differed(P200μmol/L(95%CI:2.805-8.673,P24 kg/m2(95%CI:1.285-9.890,P=0.011),

关键词： Pancreaticoduodenectomy Delta hemoglobin Estimated blood loss Postpancreatectomy hemorrhage Risk factor

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Gentiopicroside Alleviates Atherosclerosis by Suppressing Reactive Oxygen Species-Dependent NLRP3 Inflammasome Activation in Vascular Endothelial Cells via SIRT1/Nrf2 Pathway

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Chinese Journal of Integrative Medicine 2025年第2期31卷 118-130页

作者： LI Zhu-qing ZHANG Feng LI Qi WANG Li SUN Xiao-qiang LI chao YIN Xue-mei LIU Chun-lei WANG Yan-xin du Xiao-yu LU Cheng-zhi Department of Cardiology Tianjin First Central HospitalTianjin300192China The First Central Clinical School Tianjin Medical UniversityTianjin300070China Department of Cardiology The First College of Clinical Medical ScienceChina Three Gorges University&Yichang Central People’s HospitalYichangHubei Province443003China School of Medicine Nankai UniversityTianjin300071China

Objective:To evaluate the protective effects of gentiopicroside(GPS)against reactive oxygen species(ROS)-induced NOD-like receptor family,pyrin domain containing 3(NLRP3)inflammasome activation in endothelial cells,aiming to reduce ***:Eight-week-old male ApoE-deficient mice were randomly divided into 2 groups(n=10 per group):the vehicle group and the GPS treatment *** groups were fed a high-fat diet for 16 ***(40 mg/kg per day)was administered by oral gavage to the GPS group,while the vehicle group received an equivalent volume of the vehicle *** the end of the treatment,blood and aortic tissues were collected for assessments of atherosclerosis,lipid profiles,oxidative stress,and molecular expressions related to NLRP3 inflammasome activation,ROS production,and ***,in vitro experiments on human aortic endothelial cells treated with oxidized low-density lipoprotein(ox-LDL)were conducted to evaluate the effects of GPS on NLRP3 inflammasome activation,pyroptosis,apoptosis,and ROS production,specifically examining the role of the sirtuin 1(SIRT1)/nuclear factor erythroid 2-related factor 2(Nrf2)***1 and Nrf2 inhibitors were used to confirm the pathway's ***:GPS treatment significantly reduced atherosclerotic lesions in the en face aorta(Pduced oxidative stress markers and proinflammatory cytokines,including interleukin(IL)-1βand IL-18,in lesion areas(Pduced NLRP3 activation,as evidenced by reduced NLRP3(Pduction,apoptosis,and pyroptosis,with the beneficial effects being significantly reversed by SIRT1 or Nrf2 ***:GPS exe

关键词： endothelial dysfunction gentiopicroside NLRP3 inflammasome SIRT1 nuclear factor erythroid 2-related factor 2 Chinese medicine

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Deciphering the mechanism of structural transformation between Pd3L6 and Pd4L8 metal-organic cages

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Science China Chemistry 2025年

作者： xian-chao Zhou Yong-Zhen Tan Ying-Ying Ge Ya-Liang Lai Dong Luo Xiao-Ping Zhou Dan Li College of Chemistry and Materials Science Guangdong Provincial Key Laboratory of Supramolecular Coordination ChemistryJinan University

Metal-organic cages can undergo structural transformations due to the dynamic nature of dative bonds,however,the mechanism of transformation processes is often *** we report four metal-organic cages featuring Pd3L6-type and Pd4L8-type tubular structures by self-assembly of Pd（II） and two types of bidentate *** Pd3L6-type MOCs were synthesized in H2O while the Pd4L8-type cages were formed in dimethyl sulfoxide （DMSO）,indicating the solvent is critical for the *** structure transformation between Pd3L6and Pd4L8metal-organic cages can be interconverted when switching the DMSO and H2O in a relatively high *** cages partly disassemble into the metalloligands and Pd2+ions due to the competitive coordination of DMSO/H2O at low concentrations,achieving a concentration-controlled transformation ***,the structure transformation was monitored by ESI-MS,and the species of intermediate were detected,which provided direct clues for deciphering the mechanism of structural transformation.

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改进的SMS4算法差分故障与暴力联合攻击

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计算机工程与设计 2009年第18期30卷 4204-4206页

作者：刘文华杜现朝耿乔科中国科学院研究生院北京100049

研究了SMS4对差分故障和暴力联合攻击的安全性。这种联合攻击利用传统的故障模型、采用一种简化的差分故障攻击与暴力攻击相结合的方法。在实验中,用该攻击方法不到1分钟就可以恢复出128位的SMS4种子密钥,实验结果表明,SMS4密码算法很... 详细信息

研究了SMS4对差分故障和暴力联合攻击的安全性。这种联合攻击利用传统的故障模型、采用一种简化的差分故障攻击与暴力攻击相结合的方法。在实验中,用该攻击方法不到1分钟就可以恢复出128位的SMS4种子密钥,实验结果表明,SMS4密码算法很难防范这种利用差分故障和暴力攻击的联合攻击。该类型攻击对SMS4具有很大威胁,所以使用SMS4密码算法时,必须对轮函数相关运算进行保护。

关键词： SMS4密码算法故障模型暴力攻击差分故障攻击差分分析

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Revisiting Dipole-Induced Fluorinated-Anion Decomposition Reaction for Promoting a LiF-Rich Interphase in Lithium-Metal Batteries

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Nano-Micro Letters 2025年第05期 271-288页

作者： Liu Wang Jiahui Guo Qi Qi Xiaotong Li Yuanmeng Ge Haoyi Li Yunfeng chao Jiang du Xinwei Cui Henan Institutes of Advanced Technology Zhengzhou University College of Materials Science and Engineering Zhengzhou University State Key Laboratory of Coking Coal Resources Green Exploitation Zhengzhou University

Building anion-derived solid electrolyte interphase（SEI） with enriched LiF is considered the most promising strategy to address inferior safety features and poor cyclability of lithium-metal batteries（LMBs）. Herein, we discover that, instead of direct electron transfer from surface polar groups to bis（trifluoromethanesulfonyl）imide（TFSI-） for inducing a LiF-rich SEI, the dipole-induced fluorinated-anion decomposition reaction begins with the adsorption of Li ions and is highly dependent on their mobility on the polar surface. To demonstrate this, a single-layer graphdiyne on MXene（sGDY@MXene） heterostructure has been successfully fabricated and integrated into polypropylene separators. It is found that the adsorbed Li ions connect electron-donating sGDY@MXene to TFSI-, facilitating interfacial charge transfer for TFSI-decomposition. However, this does not capture the entire *** sGDY@MXene also renders the adsorbed Li ions with high mobility, enabling them to reach optimal reaction sites and expedite their coordination processes with O on O=S=O and F on the broken –CF3-, facilitating bond cleavage. In contrast, immobilized Li ions on the more lithiophilic pristine MXene retard these cleavage processes. Consequently, the decomposition reaction is accelerated on sGDY@MXene. This work highlights the dedicate balance between lithiophilicity and Li-ion mobility in effectively promoting a LiF-rich SEI for the long-term stability of LMBs.

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