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ZnO-CuO掺杂对Mn-Co-O系NTC热敏电阻微观结构与电性能的影响

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电子元件与材料 2011年第2期30卷 11-14页

作者：贾素兰陈朝阳范艳伟从秀云中国科学院新疆理化技术研究所新疆电子信息材料与器件重点实验室新疆乌鲁木齐市830011 中国科学院研究生院北京100039

以Mn3O4和Co3O4为原料,ZnO和CuO为掺杂剂,采用固相反应法制备了Mn2.3Co3.7-x-yZnxCuyO(4x=0,0.03和0.06;y=0,0.05,0.08,0.10和0.20)单层片式NTC热敏电阻材料。研究了该材料的微观结构和电性能。结果表明:通过掺杂ZnO和CuO,可以制备低阻高B型Mn-Co-O系NTC热敏电阻材料。随着ZnO掺杂量的增加,其电阻率先减小后增大,B25/50值一直增大;而随着CuO掺杂量的增加,电阻率和B25/50值都迅速减小,同时部分Cu2O在晶界发生偏析。当x=0.03,y=0.05时,该材料具有较好的NTC特性:其ρ25为719.34Ω·cm,B25/50值为3954.9K。

关键词： NTC热敏电阻低阻高B 尖晶石结构 Mn-Co-O系

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超声指导下早期手术治疗先天性肌性斜颈

河南外科学杂志 2007年第3期13卷 10-11页

作者：刘玉献周光辉范彦伟河南省安阳市妇幼保健院 455000

目的探讨超声指导下先天性肌性斜颈(CMT)患儿最佳手术时机。方法选择3个月以内确诊的CMT患儿156例,保守治疗6个月,治疗过程中定期彩超对照检查,对胸锁乳突肌挛缩、纤维化加重的45例患儿进行手术治疗。其中43例采用胸锁乳突肌切断术,2例... 详细信息

目的探讨超声指导下先天性肌性斜颈(CMT)患儿最佳手术时机。方法选择3个月以内确诊的CMT患儿156例,保守治疗6个月,治疗过程中定期彩超对照检查,对胸锁乳突肌挛缩、纤维化加重的45例患儿进行手术治疗。其中43例采用胸锁乳突肌切断术,2例采用胸锁乳突肌全切术。结果45例手术患儿39例获得术后随访(随访率86.7%),最长随访时间5年。手术效果为优35例(89.7%),良2例(5.1%),差2例(5.1%)。结论CMT最佳手术年龄可以提前到8个月甚至更小,出现胸锁乳突肌纤维化后也应尽早选择手术,彩色超声对疾病的诊断及手术时机的选择有重要作用。

关键词：斜颈手术时机彩色超声

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

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倾角和压力对空气中微润管出流特性的影响

水资源与水工程学报 2017年第5期28卷 247-249,254页

作者：赵彤范严伟赵廷红王昱兰州理工大学能源与动力工程学院甘肃兰州730050

为探明倾角(微润管与水平面的夹角)和压力对空气中微润管出流特性的影响,确定微润管倾角和压力与比流量的关系,通过室内试验研究了不同铺设倾角(0°、30°、45°、60°、90°)及0°和90°倾角时不同压力水头条件下微润管的出流特性。结... 详细信息

为探明倾角(微润管与水平面的夹角)和压力对空气中微润管出流特性的影响,确定微润管倾角和压力与比流量的关系,通过室内试验研究了不同铺设倾角(0°、30°、45°、60°、90°)及0°和90°倾角时不同压力水头条件下微润管的出流特性。结果表明:微润管出流规律符合达西定律,微润管比流量随压力水头的增大而增大,两者具有较好的线性关系;相同进水压力条件下,微润管比流量随倾角的增大而增大,与倾角正弦值呈线性关系,可将微润管倾角折算为等效水头;据此提出了包括倾角和压力的微润管比流量计算公式。研究成果为微润灌溉工程规划、设计提供基础依据。

关键词：微润管出流特性铺设倾角压力水头比流量

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金属氧化物避雷器性能在线检测研究现状分析

电力与能源 2020年第4期41卷 442-446,454页

作者：范焱炜费肇胤商忠韬国网上海市电力公司松江供电公司上海201600

指出金属氧化物避雷器在长期承受系统电压作用时会产生老化,导致阻性电流增加使其发热性能变差,因此需要定期对其性能进行检测。在分析避雷器工作原理的基础上,对国内外各种检测方法进行了比较分析,对今后开展避雷器性能检测研究具有非... 详细信息

指出金属氧化物避雷器在长期承受系统电压作用时会产生老化,导致阻性电流增加使其发热性能变差,因此需要定期对其性能进行检测。在分析避雷器工作原理的基础上,对国内外各种检测方法进行了比较分析,对今后开展避雷器性能检测研究具有非常重要的指导意义。

关键词：电力系统运行配电网金属氧化物避雷器

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4种水田高留茬搅浆埋茬平地机对比试验研究

农机化研究 2021年第5期43卷 147-152页

作者：马成成衣淑娟陶桂香包慧发范延伟田蕊黑龙江八一农垦大学工程学院黑龙江大庆163319

为研究水田高留茬搅浆埋茬平地机工作部件对作业效果的影响,以便为后期机具的工作部件设计加工提供参考,通过农机市场调研,找到4种常用的水田高留茬搅浆埋茬平地机。将这4台平地机具挂接在相同型号的拖拉机上,在相同作业条件下,以灭茬... 详细信息

为研究水田高留茬搅浆埋茬平地机工作部件对作业效果的影响,以便为后期机具的工作部件设计加工提供参考,通过农机市场调研,找到4种常用的水田高留茬搅浆埋茬平地机。将这4台平地机具挂接在相同型号的拖拉机上,在相同作业条件下,以灭茬率、稻秆分布均匀性、平整度为作业效果评价指标,以压茬刀辊带动方式、平地拖板控制方式、压茬刀轴上的刀型、搅浆部与压茬部连接方式作为对比,进行对比试验。试验结果表明:压茬刀辊以拖拉机动力输出轴为动力源的机型在作业后稻秆在地表8cm以下的分布含量占总含量的57.89%,以液压马达为动力源的机型平均为34.54%,平地拖板由液压油缸控制的机型作业后平整度标准差为2.43,预紧弹簧控制的平地拖板的机型作业后平整度标准差平均为3.63,压茬刀型为旋转曲形弾齿的水田高留茬搅浆埋茬平地机作业后灭茬率平均达到93.93%,而以直橡胶结构刀型的机型灭茬率为85.38%;搅浆部与压茬部连接方式不影响作业效果。在试验结果的基础上,通过柱状图柱体高度对各个机型作业效果进行评价,简单分析了相关作业机理,可为水田高留茬搅浆埋茬平地装备研制中关键部件设计提供参考。

关键词：平地机水田高留茬埋茬

Association of a complete breast cancer pathologic response with axillary lymph node metastasis via neoadjuvant chemotherapy:Results from the CSBrS-012 study

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Chinese Medical Journal 2024年第11期137卷 1369-1371页

作者： Le Ma Pin Gao Zhenzhen Liu Dechuang Jiao Rui Ling Jingjing Xiao Yi Zhao Yitong Wang Hongjian Yang Yunjiang Liu Ke Liu Jianguo Zhang Guangyan Li Dahua Mao Yinglei Deng Jianjun He Maimaitiaili Amina Zhigang Yu Wang Fei Yinhua Liu Peifen Fu Minya Yao Jiandong Wang Li Zhu Hongchuan Jiang Zuowei Zhao Xingsong Tian Zhongwei Cao Xinyu Ma Kejin Wu Shaomei Fu Ailin Song yanwei Wang Jin Feng Zhimin fan Department of Breast Surgery General Surgery CenterThe First Hospital of Jilin UniversityChangchunJilin 130021China Department of Breast Disease Henan Breast Cancer CenterAffiliated Cancer Hospital of Zhengzhou University&Henan Cancer HospitalZhengzhouHenan 450008China Department of Thyroid Breast and Vascular SurgeryXijing HospitalFourth Military Medical UniversityXi’anShaanxi 710032China Surgical Oncology Department Shengjing Hospital of China Medical UniversityShenyangLiaoning 110022China Department of Breast Surgery The Cancer Hospital of the University of Chinese Academy of Sciences(Zhejiang Cancer Hospital)Institute of Basic Medicine and Cancer(IBMC)Chinese Academy of SciencesHangzhouZhejiang 310022China Department of Surgery The Fourth Hospital of Hebei Medical UniversityShijiazhuangHebei 052360China Fourth Department of Breast Surgery Jilin Cancer HospitalChangchunJilin 130012China Department of Breast Surgery The Second Affiliated Hospital of Harbin Medical UniversityHarbinHeilongjiang 150086China Department of Breast Surgery Affiliated Wudang Hospital of Guizhou Medical UniversityGuiyangGuizhou 550009China Department of Breast Surgery The First Affiliated Hospital of Xi’an Jiaotong UniversityXi’anShaanxi 710061China Department of Breast Surgery The Second HospitalCheeloo College of MedicineShandong UniversityJinanShandong 250033China Breast Disease Center Peking University First HospitalBeijing 100034China Department of Breast Surgery The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhouZhejiang 310003China Department of General Surgery The First Medical CenterChinese PLA General HospitalBeijing 100852China Department of Breast Surgery Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Department of Breast Surgery The Second Affiliated Hospital of Dalian Medical UniversityDalianLiaoning 116023China Department of Breast and Thyroid Surgery Shandong Provincial Hospital Affiliated to Shandong UniversityJinan

To the Editor:In the last decade,neoadjuvant chemotherapy(NAC)has become a well-accepted treatment option for breast cancer,although few detailed description of NAC in China has yet been reported.[1]A previous study found that among patients with clinically node-negative(cN0)breast cancer,97.7%(432/442)with breast pathologic complete response(bpCR)had ypN0(absence of metastases in the axillary lymph nodes);and 71.6%(882/1232)without bpCR achieved ypN0(P<0.001).As for human epidermal growth factor receptor 2(HER2)positive or triple-negative breast cancer(TNBC)that achieved bpCR.

关键词： breast pathologic chemotherapy

Erratum to: A robust indium-organic framework with open tubular channels for efficient separation of acetylene

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Nano Research 2024年第4期17卷 3425-3425页

作者： Yong-Zhi Li Gang-Ding Wang fan Xu Qing Yin Danyang Zhao Jiqiu Qi yanwei Sui Lei Hou Yao-Yu Wang School of Materials and Physics China University of Mining and TechnologyXuzhou 221116China Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education Shaanxi Key Laboratory of Physico-Inorganic ChemistryCollege of Chemistry&Materials ScienceNorthwest UniversityXi’an 710069China

Erratum to Nano Research,2024,17(4):3139–3146 https://***/10.1007/s12274-023-6061-8 In the first page of the original version of this paper,the corresponding authors should be“yanwei Sui”and“Lei Hou”,instead of“Lei Hou”and“Yao-Yu Wang”.And“Address correspondence to:Lei Hou,lhou2009@***;Yao-Yu Wang,wyds123456@***”should be corrected to“Address correspondence to:Lei Hou,lhou2009@***;yanwei Sui,wyds123456@***”.

关键词： separation correspondence outlook

HXD2B型机车辅助变流柜通风机支撑体断裂分析及优化措施

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铁道机车与动车 2024年第5期 47-48,14,I0002页

作者：范文武李艳伟大同赛诚轨道交通设备有限责任公司山西大同037038

对HXD2B型机车辅助变流柜通风机存在的支撑体断裂等问题进行原因分析,将通风机结构进行了优化设计,同时对叶轮进行轻量化设计,以此来解决通风机存在的质量问题。

关键词：通风机叶轮结构断裂轻量化