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Solution-Processed Hybrid Europium (Ⅱ) lodide Scintillator for Sensitive X-Ray Detection

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Research 2024年第1期2024卷 49-57页

作者： Xue Zhao Pengfei Fu Pan Li Hainan Du Jinsong Zhu Ciyu ge Longbo Yang Boxiang Song Haodi wu Tong Jin Qingxun Guo Liang wang Jinghui Li Zewen Xiao Jingjing Chang Guangda Niu Jiajun Luo Jiang Tang School of Microelectronics Xidian UniversityXi'an 710071China wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China China Optics Valley Laboratory Wuhan 430074China School of Optical and Electronic Information Huazhong University of Science and TechnologyWuhan 430074China

Lead halide perovskite nanocrystals have recently demonstrated great potential as x-ray scintillators,yet they stll suffer toxicity issues,inferior light yield(LY)caused by severe *** bivalent europium ions(Eu^(2+))with intrinsically efficient and self-absorption-free d-f transition are a prospective replacement for the toxic Pb^(2+).Here,we demonstrated solution-processed organic-inorganic hybrid halide BA_(10)Eul_(12)(BA denotes C_(4)H_(9)NH_(4)^(+))single crystals for the first time.

关键词： absorption halide perovskite

Strong Anisotropic Order Parameters at All-Nitride Ferromagnet/Superconductor Interfaces

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Chinese Physics Letters 2024年第2期41卷 102-111页

作者： Qiao Jin Meng Yang Guozhu Song Nan Zhao Shengru Chen Haitao Hong Ting Cui Dongke Rong Qianying wang Yiyan Fan Chen ge Can wang Jiachang Bi Yanwei Cao Liusuo wu Shanmin wang Kui-Juan Jin Zhi-Gang Cheng Er-Jia Guo Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Department of Physics&Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Department of Physics Southern University of Science and TechnologyShenzhen 518055China Songshan Lake Materials Laboratory Dongguan 523808China Ningbo Institute of Materials Technology&Engineering Chinese Academy of SciencesNingbo 315201China

Proximity effects between superconductors and ferromagnets(SC/FM)hold paramount importance in comprehending the spin competition transpiring at their *** competition arises from the interplay between Cooper pairs and ferromagnetic exchange *** proximity effects between transition metal nitrides(TMNs)are scarcely investigated due to the formidable challenges of fabricating high-quality SC/FM *** fabricated heterostructures comprising SC titanium nitride(TiN)and FM iron nitride(Fe_(3)N)with precise chemical compositions and atomically well-defined *** magnetoresistance of Fe_(3)N/TiN heterostructures shows a distinct magnetic anisotropy and strongly depends on the external ***,the superconducting transition temperatureT_(C) and critical field of TiN experience notable suppression when proximity to Fe_(3)*** observe the intriguing competition of interfacial spin orientations near𝑇T_(C)(∼1.25 K).These findings not only add a new materials system for investigating the interplay between superconductor and ferromagnets,but also potentially provide a building block for future research endeavors and applications in the realms of superconducting spintronic devices.

关键词： proximity Superconductor titanium

Effects ofγ-aminobutyric Acid on Nitrogen Metabolism in Roots and Leaves of Cold-stressed Rice(Oryza sativa L.)During Early Vegetative Growth

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Journal of Northeast Agricultural University(English Edition) 2024年第3期31卷 1-19页

作者： Jia Yan Gong Weibin Ma Huimiao Liu ge Zhang Can Liu Aixin Han Yiming Dang Yuxiang Bai Xu wang Haixing wu Yulong Xin Junying Key Laboratory of germplasm Enhancement Physiology and Ecology of Food Crops in Cold RegionMinistry of EducationNortheast Agricultural UniversityHarbin 150030China

Cold stress adversely affects rice growth,particularly at the early vegetative growth *** higher plants,nitrogen metabolism plays a central role in amino acid metabolism,plant defense mechanisms and *** report investigated the effects of cold stress and supplementalγ-aminobutyric acid(GABA)under cold stress on nitrogen metabolism in rice *** stress resulted in a greater increase in the transformation to NH_(4)^(+)by nitrate reductase(NR)in roots,it further resulted in lower levels of NO_(3)^(-)content in roots,weakened glutamine glutamate(GOGAT/GS)pathway and elevated glutamate dehydrogenase(GDH)pathway of rice ***,compared with cold stress,supplementation of GABA(2.5 mmol·L^(-1))could increase relative water content(79.43%)and biomass(34.15%)of rice *** could act as an amplifier of stress signal conduction/transduction to increase NR activity and promote NO_(3)^(-)assimilation in *** addition,GABA elicited the Ca^(2+)signaling pathway which could promote the GDH pathway and GABA shunt,increase the activities of GS and GDH,and the expression of OsGAD2 and OsGDH *** GABA might increase the ratio of the Glu family and avoid NH4+toxicity in order to raise the concentration of organic compounds and alleviate the harmful consequences of cold *** on these observations,this study proposed that GABA mediated cold tolerance in rice seedlings by activating Ca^(2+)burst and subsequent crosstalk among Ca^(2+)signaling,GDH pathway and GABA shunt.

关键词： cold stress γ-aminobutyric acid rice nitrogen metabolism

何以“独立”:我国独立学院高质量发展的突破路径--基于独立学院转设亲历者的口述史研究

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教育理论与实践 2024年第15期44卷 9-14页

作者：吴舸王昕何斯佳广州应用科技学院广东肇庆526000 西南大学国际学院重庆北碚400715

独立学院是我国高等教育办学体制改革的产物。目前,大量独立学院转设后面临着原生与新生双重的高质量发展困境,难以承担起教育强国战略背景下的时代使命。利用口述史研究方法,对15名独立学院转设的亲历人员开展口述访谈,可从事件参与者... 详细信息

独立学院是我国高等教育办学体制改革的产物。目前,大量独立学院转设后面临着原生与新生双重的高质量发展困境,难以承担起教育强国战略背景下的时代使命。利用口述史研究方法,对15名独立学院转设的亲历人员开展口述访谈,可从事件参与者和历史活动者的角度梳理独立学院演展至今的转设历程,从中发现独立学院转设的历史动因具有强依附性与外发性,是其当下无法实现内发性独立的发展隐患。独立学院转设后应从外部主体的协同施力与内部结构的自主优化两个维度寻求高质量发展。

关键词：高等教育独立学院转设口述史研究高质量发展

A multicenter prospective study on the management of hepatoblastoma in children:a report from the Chinese Children's Cancer Group

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World Journal of Pediatrics 2024年第6期20卷 590-601页

作者： Meng-Jie Tang Xiao-Li Ma Xiang-Ling He Wei-Hua Pan Xiao-Hong Zhang Sha-Yi Jiang Ju Gao Fu Li Wei Yao Song Gu Wei-Ling Zhang Qiang Zhao Shi-Hao Huang Yong-Jun Fang Wei Liu Hui-Zhong Niu Chun-Mei wang Li-Rong Sun Hui Gao Yun-Peng Dai Shun-gen Huang Zhi-Yong Zhong Xi-ge wang Zhong-Rong Li Liang-Chun Yang Ye-Ming wu Huan-Min wang Xin Sun Xiao-Jun Yuan Department of Pediatric Hematology/Oncology Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineNo.1665Kongjiang RoadYangpu DistrictShanghai 200092China Medical Oncology Department Pediatric Oncology CenterBeijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing 100045China Department of Hematology/Oncology Children's Medical CenterHunan Provincial People's HospitalThe First Affiliated Hospital of Hunan Normal UniversityChangsha 41005China Department of Pediatric Surgery Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China Department of Hematology/Oncology Guangzhou Women and Children's Medical CenterNational Children's Medical Center for South Central RegionGuangzhou 510623China Department of Hematology Shanghai Children's HospitalShanghai Jiao Tong UniversityShanghai 200062China Department of Pediatrics West China Second University HospitalSichuan UniversityChengdu 610041China Department of Hematology/Oncology Qilu Children's Hospital of Shandong UniversityJinan 250022China Department of Pediatric Surgery Children's Hospital of Fudan UniversityShanghai 201102China Department of general Surgery Shanghai Children's Medical Center(National Children's Medical Center-Shanghai)Shanghai Jiao Tong University School of MedicineShanghai 200127China Department of Pediatrics Beijing Tongren HospitalCapital Medical UniversityBeijing 100730China Department of Pediatric Oncology Tianjin Medical University Cancer Institute and HospitalTianjin 300060China Department of Hematology/Oncology Children's Hospital of Nanjing Medical UniversityNanjing 210008China Department of Hematology/Oncology Henan Children's HospitalZhengzhou 450018China Department of Pediatric general Surgery Hebei Children's Hospital of Hebei Medical UniversityShijiazhuang City 050031China Children's Hospital the First Affliated Hospital of Zhengzhou UniversityZhengzhou 450052China Department of Paediatric

Background This study aimed to identify survival risk factors in Chinese children with hepatoblastoma(HB)and assess the effectiveness of the new treatment protocol proposed by the Chinese Children's Cancer Group(CCCG)in *** A multicenter,prospective study that included 399 patients with HB from January 2015 to June 2020 was *** demographics,treatment protocols,and other related information were *** regression models and Kaplan-Meier curve methods were *** The 4-year event-free survival(EFS)and overall survival(OS)were 76.9 and 93.5%,*** 4-year EFS rates for the very-low-risk,low-risk,intermediate-risk,and high-risk groups were 100%,91.6%,81.7%,and 51.0%,*** 4-year 0S was 100%,97.3%,94.4%,and 86.8%,*** regression analysis found that age,tumor rupture(R+),and extrahepatic tumor extension(E+)were independent prognostic factors.A total of 299 patients had complete remission,and 19 *** with declining alpha-fetoprotein(AFP)>75%after the first two cycles of neoadjuvant chemotherapy had a better EFS and OS than those≤75%.Conclusions The survival outcome of HB children has dramatically improved since the implementation of CCCG-HB-2016 ***≥8 years,R+,and E+were independent risk factors for *** with a declining AFP>75%after the first two cycles of neoadjuvant chemotherapy had better EFS and OS.

关键词： Alpha-fetoprotein Hepatoblastoma Multicenter Prospective study Survival

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面向转向制动工况的制动力动态分配策略

汽车工程 2024年第10期46卷 1755-1765页

作者：吴桐荣劲王军年孙文初亮葛林鹤湖北汽车工业学院汽车动力传动与电子控制湖北省重点实验室十堰442002 吉林大学汽车工程学院长春130022 常州工学院汽车工程学院常州213032

受轮胎侧偏、载荷横移等因素的影响,汽车在转向制动工况下的动力学行为比直线制动更复杂。深入探究该工况下改善汽车循迹能力的制动力分配策略,对于保障行车安全具有重要意义。对此,本文以电子机械制动为载体,进一步研究转向制动工况下... 详细信息

受轮胎侧偏、载荷横移等因素的影响,汽车在转向制动工况下的动力学行为比直线制动更复杂。深入探究该工况下改善汽车循迹能力的制动力分配策略,对于保障行车安全具有重要意义。对此,本文以电子机械制动为载体,进一步研究转向制动工况下的制动力分配策略。首先,以2自由度汽车动力学模型为参考,基于模型预测控制算法求解汽车保持稳定行驶时前和后轴车轮所需的最低侧向力。然后,通过在线求解附着椭圆得出可供各车轮制动的最大纵向力。在此基础上,以最大纵向力为依据进一步计算制动力分配系数,实现制动力优化分配。仿真和试验结果表明:所提出的制动力分配策略能够根据汽车行驶工况、载荷状态和路面附着条件动态调节制动力分配比例,提升了转向制动工况汽车的循迹能力。

关键词：制动力动态分配转向制动电子机械制动模型预测控制循迹能力

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利用时域叠加的声学成像法定位埋地PE管道

声学学报 2024年第3期49卷 569-576页

作者：葛亮何建高艳肖小汀吴佳晔王甜西南石油大学机电工程学院成都610500 中国科学院声学研究所北京100190 西南石油大学电气信息学院成都610500

针对现有埋地管道探测技术难以确定聚乙烯(PE)管道埋深且通常对管线走向的探测误差较大的问题,提出了优化的时域叠加声学成像法。利用该方法对仿真信号进行直达波与表面波消除、反射波提取和成像定位处理,验证了方法的可行性。最后,对埋... 详细信息

针对现有埋地管道探测技术难以确定聚乙烯(PE)管道埋深且通常对管线走向的探测误差较大的问题,提出了优化的时域叠加声学成像法。利用该方法对仿真信号进行直达波与表面波消除、反射波提取和成像定位处理,验证了方法的可行性。最后,对埋深0.4 m和1.0 m的PE管进行定位测试实验,最大管线平面定位误差分别为0.179 m和0.240 m,说明该方法基本满足较好埋地条件PE管道探测的需求。

关键词：管线定位聚乙烯管道声学成像时域叠加

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双模型策略在指甲病图像智能诊断中的应用

海军军医大学学报 2024年第8期45卷 981-989页

作者：陈军晓殷杰扈东营吴兆朱秀艳王士勇海军军医大学(第二军医大学)第三附属医院信息科上海200438 海军军医大学(第二军医大学)第二附属医院皮肤科上海200003

目的探索一种在小数据量条件下提高医学诊断神经网络模型准确率和泛化能力的方法,解决在指甲病图像计算机辅助诊断中由于训练数据量小而导致神经网络模型性能不佳的问题。方法提出融合实例分割与细粒度特征分类的双模型策略,采用第一届... 详细信息

目的探索一种在小数据量条件下提高医学诊断神经网络模型准确率和泛化能力的方法,解决在指甲病图像计算机辅助诊断中由于训练数据量小而导致神经网络模型性能不佳的问题。方法提出融合实例分割与细粒度特征分类的双模型策略,采用第一届全国数字健康创新应用大赛健康医疗大数据主题赛基于图像的指甲病智能诊断模型任务数据集训练基于双模型策略的神经网络模型,该任务数据集涵盖甲母痣、甲沟炎、银屑病甲、甲真菌病、甲下出血、甲黑线、甲周疣、甲黑素瘤8类指甲病,各类别不平衡。评估双模型策略的诊断性能,并与相同软、硬件训练条件下单模型策略[图像分类模型(ResNet50、Swin Transformer)和基于快速区域卷积神经网络(Faster R-CNN)的目标检测模型]进行比较。结果纳入任务数据集包括甲母痣210例、甲沟炎186例、银屑病甲69例、甲真菌病203例、甲下出血149例、甲黑线71例、甲周疣93例、甲黑素瘤67例共1048例样本,其中90%的样本用于训练不同策略的模型,10%用于评估模型。基于ResNet50的图像分类模型的micro F1值为0.324,基于Swin Transformer的图像分类模型为0.381,基于Faster R-CNN的目标检测模型为0.572,基于双模型策略的Mask R-CNN+Swin Transformer模型为0.714。双模型策略预测各指甲病的准确度为甲母痣80.95%(17/21)、甲沟炎89.47%(17/19)、银屑病甲100.00%(7/7)、甲真菌病70.00%(14/20)、甲下出血73.33%(11/15)、甲黑线14.29%(1/7)、甲周疣55.56%(5/9)、甲黑素瘤42.86%(3/7)。双模型策略在该任务1000例测试集中的micro F1值为0.844。结论双模型策略可以有效结合功能不同的模型,更好地完成小数据量训练条件下的指甲病图像智能诊断任务。

关键词：指甲病智能诊断神经网络实例分割细粒度特征分类

Achieving high power factor in GaSb with intrinsically high mobility via ge doping

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Rare Metals 2024年第10期43卷 5435-5441页

作者： Yan-Ci Yan Guo-Wei wang Qi-Hong Xiong Xu Lu Peng Chen Wei Zou Deng-Feng Li Hong wu Yun Zhou Xiao-Yuan Zhou School of Science Chongqing University of Posts and Telecommunications College of Physics Chongqing University College of Ocean Science and Engineering Shanghai Maritime University

The thermoelectric power factor is as crucial as their overall thermoelectric ***-based compounds are deemed to achieve high power factor owing to their intrinsically high mobility compared to classical thermoelectric ***,the carrier concentration of pristine GaSb is considerably lower than the optimum value,which hinders its ability to attain high electrical *** this paper,we present the investigations on the thermoelectric performance of p-type *** experimental results reveal that ge doping can effectively tune the carrier concentration.

关键词： Carrier concentration