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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1147-1165页

作者： Zijian Peng yuhao wang Shuqi wang Junteng Yao Qingyuan Zhao Enyu Xie Guoliang Chen Zhigang wang Zhanguo Liu Yaming wang Jiahu Ouyang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China School of Materials and Metallurgical Engineering Inner Mongolia University of Science&TechnologyBaotou 014010China

The A_(2)B_(2)O_(7)-type rare earth zirconate compounds have been considered as promising candidates for thermal barrier coating(TBC) materials because of their low sintering rate,improved phase stability,and reduced thermal conductivity in contrast with the currently used yttria-partially stabilized zirconia (YSZ) in high operating temperature *** review summarizes the recent progress on rare earth zirconates for TBCs that insulate high-temperature gas from hot-section components in gas *** on the first principles,molecular dynamics,and new data-driven calculation approaches,doping and high-entropy strategies have now been adopted in advanced TBC materials *** this paper,the solid-state heat transfer mechanism of TBCs is explained from two aspects,including heat conduction over the full operating temperature range and thermal radiation at medium and high *** paper also provides new insights into design considerations of adaptive TBC materials,and the challenges and potential breakthroughs are further highlighted for extreme environmental *** for improving thermophysical performance are proposed in two approaches:defect engineering and material compositing.

关键词： rare earth zirconates thermal barrier coatings defect engineering doping and compositing thermal conductivity thermal expansion

Performance Analysis of an Efficient Integration System of Coal-Fired Power Plant,Solar Thermal Energy and CO_(2)Capture

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Journal of Thermal Science 2024年第4期33卷 1509-1522页

作者： wang yuhao wang Ruilin LIU Lanhua XING Chenjian GUO Yafei YANG Qingshan YING Jiaheng SUN Jian LI Wenjia LIU Yuanyuan ZHAO Chuanwen School of Energy and Mechanical Engineering Nanjing Normal UniversityNanjing210023China China Huadian Group Co.LTD.Shanghai Branch Shanghai200120China Key Laboratory of Efficient Utilization of Low and Medium Grade Energy(Tianjin University) Ministry of Education of ChinaTianjin300350China Huadian Zhengzhou Mechanical Design Institute Company Limited Zhengzhou450046China

Coal-fired power plant is a major contributor to greenhouse gas *** post-combustion capture is a promising method for CO_(2)emission reduction but the high thermal demand is *** address this issue,solar thermal energy and CO_(2)capture are jointly integrated into the coal-fired power plant in this *** solar thermal energy is employed to meet the heat requirement of the CO_(2)capture process,thereby avoiding the electricity loss caused by self-driven CO_(2)***,the heat released from the carbonation reaction of MgO adsorbent is integrated into the steam Rankine *** partially substituting the extracted steam for feedwater heating,the electricity output of the power plant is further *** to the results from the developed model,the system could achieve a CO_(2)capture rate of 86.5%and an electricity output enhancement of 9.8%compared to the reference system,which consists of a self-driven CO_(2)capture coal-fired power plant and PV generation *** operational strategy is also optimized and the amount of CO_(2)emission reduction on a typical day is increased by 11.06%.This work shows a way to combine fossil fuels and renewable energy for low carbon emissions and efficient power generation.

关键词： CO_(2)capture parabolic trough collector solar aided coal-fired electricity generation

Ultralow Ohmic Contact in Recess-Free Ultrathin Barrier AlGaN/GaN Heterostructures Across a Wide Temperature Range

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Chinese Journal of Electronics 2024年

作者： yuhao wang Sen HUANG Qimeng JIANG Xinhua wang Jie FAN Haibo YIN Ke WEI Yingkui ZHENG Xinyu LIU Key Laboratory of Microelectronic Devices & Integrated Technology Institute of Microelectronics of Chinese Academy of Sciences Institute of Microelectronics University of Chinese Academy of Sciences

‘Ohmic-before-passivation' process was implemented on ultrathin-barrier(UTB) AlGaN(<6 nm)/GaN heterostructure to further reduce the ohmic contact resistance(Rc). In this process, alloyed Ti/Al/Ni/Au ohmic metal was formed first, followed by AlN/SiNx passivation contributed to restore two-dimensional electron gas(2DEG) in the access region. Due to the sharp change in the concentration of 2DEG at the metal edge, a reduced transfer length(LT) consisted with lower Rc are achieved compared to that of ohmic contact on AlGaN(～20 nm)/GaN heterostructure with pre-ohmic recess process. Temperature-dependent current voltage measurements demonstrate that the carrier transport mechanism is dominated by thermionic field emission above 200 K and by field emission below 200 *** ‘ohmic-before-passivation' process enables the relative stability of ohmic contacts between 50 K to 475 K and significantly improves the DC characteristics of GaN-MIS-HEMTs, offering a promising means for scaling down and enabling the utilization of low-voltage GaN-based power devices in extreme environmental conditions.

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Method for the extraction of circulating nucleic acids based on MOF reveals cell-free RNA signatures in liver cancer

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National Science Review 2024年第1期11卷 94-106页

作者： Yuqing Sun Haixin Yu Shaoqing Han Ruoxi Ran Ying Yang Yongling Tang yuhao wang Wenhao Zhang Heng Tang Boqiao Fu Boshi Fu Xiaocheng Weng Song-Mei Liu Hexiang Deng Shuang Peng Xiang Zhou College of Chemistry and Molecular Sciences Key Laboratory of Biomedical Polymers-Ministry of Education Wuhan University Department of Digestive Surgical Oncology Union Hospital Tongji Medical College Huazhong University of Science and Technology Cancer Center Union HospitalTongji Medical CollegeHuazhong University of Science and Technology Department of Clinical Laboratory Center for Gene Diagnosis and Program of Clinical Laboratory Zhongnan Hospital of Wuhan University College of Chemistry and Materials Science Hubei Engineering University Department of Pharmacology School of Pharmacy China Medical University Taikang Center for Life and Medical Sciences Wuhan University Department of Hematology Zhongnan Hospital of Wuhan University

Cell-free RNA(cf RNA) allows assessment of health, status, and phenotype of a variety of human organs and is a potential biomarker to non-invasively diagnose numerous diseases. Nevertheless, there is a lack of highly efficient and bias-free cf RNA isolation technologies due to the low abundance and instability of cf ***, we developed a reproducible and high-efficiency isolation technology for different types of cell-free nucleic acids(containing cf RNA and viral RNA) in serum/plasma based on the inclusion of nucleic acids by metal-organic framework(MOF) materials, which greatly improved the isolation efficiency and was able to preserve RNA integrity compared with the most widely used research kit method. Importantly, the quality of cf RNA extracted by the MOF method is about 10-fold that of the kit method, and the MOF method isolates more than three times as many different RNA types as the kit method. The whole transcriptome mapping characteristics of cf RNA in serum from patients with liver cancer was described and a cf RNA signature with six cf RNAs was identified to diagnose liver cancer with high diagnostic efficiency(area under curve = 0.905 in the independent validation cohort) using this MOF method. Thus, this new MOF isolation technique will advance the field of liquid biopsy, with the potential to diagnose liver cancer.

关键词： MOF circulating cell-free RNA biomarker liver cancer diagnosis

Chemodivergent annulations of allenyl imides andβ,γ-enones switched by nucleophilic phosphine and amine catalysts

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Chinese Chemical Letters 2024年第1期35卷 254-258页

作者： Bingsen Xiang yuhao wang Chuqing Xiao Fengkai He Yiyong Huang Department of Chemistry School of ChemistryChemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China Wuhan Britain China School Wuhan 430022China

Nucleophilic phosphine and amine catalyst-switched chemodivergent[4+1]and[3+3]annulations of allenyl imides andβ,γ-enones have been developed,furnishing highly substituted 2-cyclopentenone and 2-pyranone derivatives in moderate to excellent *** plausible reaction mechanisms involving two different ketene intermediates have been proposed to explain the observed ***,by virtue of theα,β-enone substructure of the[4+1]adducts,1,3-dipolar cycloaddition of nitrile imines has been studied in one-pot to provide various fused pyrazoline derivatives.

关键词： Chemodivergent Nucleophilic catalysis Allene Cyclopentenone Pyranone

顾及特征离散程度的SEaTH特征优化选择方法

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伊马替尼治疗胃肠道间质瘤耐药的相关分子机制研究进展

测绘学报 2024年第1期53卷 20-35页

作者：瞿伟王宇豪王乐李久元李达长安大学地质工程与测绘学院陕西西安 710054

特征选择是面向对象信息提取的关键步骤之一.本文针对分离阈值(separability and threshold,SEaTH)这一特征选择方法在实际应用中存在的不足,例如未考虑特征值的离散程度,仅利用J-M距离评判单一特征,特征间可能存在较强相关性,以及无法... 详细信息

特征选择是面向对象信息提取的关键步骤之一.本文针对分离阈值(separability and threshold,SEaTH)这一特征选择方法在实际应用中存在的不足,例如未考虑特征值的离散程度,仅利用J-M距离评判单一特征,特征间可能存在较强相关性,以及无法有效确定出分类顺序,提出了一种改进的SEaTH算法(optimized SEaTH,OPSEaTH).OPSEaTH 算法首先在J-M 距离基础上构建了一类特征评价指标(E值),有效解决了特征值的离散度问题;然后,基于E值构建出特征组合评价指标(C,值),可有效评估得到每种地物的最佳特征组合并自动确定出地物的分类顺序;最后基于eCognition等分类器可完成对地物对象的最终有效分类.利用高分二号遥感影像数据对本文方法进行了测试,并将结果分别与SEaTH算法、DPC、OIF和最近邻分类器的分类结果进行了对比,结果表明:OPSEaTH算法不仅能有效降低特征维数、优化特征空间,还能够对分类顺序进行自动化合理确定,总体精度和Kappa系数及其他精度指标,均显著优于基于SEaTH算法的特征选择结果.本文方法无论从特征降维效果、分类结果精度还是计算效率方面均优于DPC、OIF和最近邻分类器结果.OPSEaTH是一种更优的特征选择方法.

关键词： SEaTH算法特征选择离散系数特征组合分类顺序改进SEaTH算法

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中国肿瘤临床 2024年第4期51卷 197-202页

作者：赵燕王昱昊王娟杨建军西北大学生命科学学院西安市710069 空军军医大学第一附属医院西京消化病医院消化外科消化系肿瘤整合防治全国重点实验室

研究胃肠道间质瘤(gastrointestinal stromal tumor,GIST)伊马替尼耐药的机制,开发新的治疗靶点和治疗方案,对改善GIST患者的长期预后具有重要意义。本文从GIST的分子特征、伊马替尼耐药机制、非编码RNA、溶酶体、关键蛋白和成纤维细胞... 详细信息

研究胃肠道间质瘤(gastrointestinal stromal tumor,GIST)伊马替尼耐药的机制,开发新的治疗靶点和治疗方案,对改善GIST患者的长期预后具有重要意义。本文从GIST的分子特征、伊马替尼耐药机制、非编码RNA、溶酶体、关键蛋白和成纤维细胞生长因子2(fibroblast growth factor-2,FGF-2)等方面对GIST伊马替尼耐药机制的研究进行了综述。研究表明,不同的耐药机制网络之间是相互联系的。伊马替尼治疗和联合抑制多种耐药机制有望成为GIST治疗的新选择。此外,基于耐药机制的识别实施个体化治疗将为伊马替尼耐药的GIST患者提供新的辅助治疗选择,从而延缓GIST的进展。

关键词：胃肠道间质瘤伊马替尼耐药分子机制

新质生产力、企业创新与供应链韧性:来自中国上市公司的微观证据

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新疆社会科学 2024年第3期 68-82,177页

作者：王煜昊马野青南京大学数字经济与管理学院江苏苏州215163 南京大学商学院江苏南京210008

文章探讨了新质生产力对供应链韧性的影响及其内在机制。理论上,新质生产力通过提升企业创新能力对供应链韧性产生积极作用。实证上,以2010—2022年中国837个上市公司为研究样本,通过劳动者、劳动对象和劳动资料维度测算企业新质生产力... 详细信息

文章探讨了新质生产力对供应链韧性的影响及其内在机制。理论上,新质生产力通过提升企业创新能力对供应链韧性产生积极作用。实证上,以2010—2022年中国837个上市公司为研究样本,通过劳动者、劳动对象和劳动资料维度测算企业新质生产力,从供应链抵抗能力、恢复能力和创造能力角度得到企业供应链韧性,考察新质生产力赋能供应链韧性的效应。结果显示,新质生产力可积极赋能供应链韧性提升,表现出递增的非线性溢出作用,企业创新在其中发挥正向机制作用,该效应在不同分位数、分指标、产业类别和企业性质中存在异质性,五大城市群在发展中同样各具特色。本研究为企业发展新质生产力、制定供应链韧性提升战略以及持续提升创新能力提供了参考。

关键词：新质生产力供应链韧性企业创新

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压缩感知辅助的低复杂度SCMA系统优化设计

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电子与信息学报 2024年第5期46卷 2011-2017页

作者：余礼苏钟润吕欣欣王玉皞王正海南昌大学信息工程学院南昌330031

稀疏码多址接入(SCMA)技术是一项备受重视的基于码域的非正交多址接入(NOMA)技术。针对现有SCMA码本设计中未能结合数据和解码器性质以及MPA复杂度较高的问题,该文提出一种压缩感知辅助的低复杂度SCMA系统优化设计方案。首先以系统误码... 详细信息

稀疏码多址接入(SCMA)技术是一项备受重视的基于码域的非正交多址接入(NOMA)技术。针对现有SCMA码本设计中未能结合数据和解码器性质以及MPA复杂度较高的问题,该文提出一种压缩感知辅助的低复杂度SCMA系统优化设计方案。首先以系统误码率为优化目标,设计一种码本自更新方法用于实现低复杂度检测器,该方法在稀疏向量重构训练过程中使用梯度下降法实现码本的自更新。其次,设计一种压缩感知辅助的多用户检测算法:符号判决正交匹配追踪(SD-OMP)算法。通过在发射端对发射信号进行稀疏化处理,在接收端利用压缩感知技术对多用户的稀疏信号进行高效的检测和重构,达到减少用户间的冲突和降低系统复杂度的目的。仿真结果表明,在高斯信道条件下,压缩感知辅助的低复杂度SCMA系统优化设计方案能够有效降低多用户检测的复杂度,且在系统用户部分活跃时能够表现出较好的误码率性能。

关键词：稀疏码多址接入压缩感知码本设计多用户检测低复杂度

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聚合物基电解质在低温固态锂电池中的应用与挑战

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储能科学与技术 2024年第7期13卷 2243-2258页

作者：王宇豪李志勇郭新华中科技大学材料科学与工程学院材料成形与模具技术全国重点实验室湖北武汉430074

由于其良好的柔韧性、与电极兼容性好、易加工等特点,聚合物基电解质在固态锂电池中极具应用前景。聚合物基固态电池可在室温下稳定工作,在低温下(≤0℃),聚合物电解质离子电导率的降低和缓慢的锂离子传输动力学导致电池极化增大,放电... 详细信息

由于其良好的柔韧性、与电极兼容性好、易加工等特点,聚合物基电解质在固态锂电池中极具应用前景。聚合物基固态电池可在室温下稳定工作,在低温下(≤0℃),聚合物电解质离子电导率的降低和缓慢的锂离子传输动力学导致电池极化增大,放电容量急剧衰减,且低温下枝晶生长更加严重,极大限制了固态电池在低温环境中的应用。本文通过对近期相关文献进行探讨,首先介绍了聚合物基电解质在低温下应用面临的挑战和局限,接着阐述了聚合物基电解质的离子传导机制,通过实例重点阐述了低温聚合物基电解质的设计策略及应用,包括添加无机/有机填料、引入液体塑化剂、分子结构工程等优化聚合物基电解质体相离子传导的方法,以及原位聚合和构建良好的固体电解质界面/正极电解质界面等优化聚合物基电解质和电极间界面离子传输的方法。最后,评估并展望了低温聚合物基电解质的传输机制、设计原则、制备方法的不足及创新。本文有望促进聚合物基电解质及其固态锂电池在低温下的应用。

关键词：聚合物基电解质低温离子传导固态锂电池

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