检索结果-南通市图书馆

Integration of high-performance spin-orbit torque MRAM devices by 200-mm-wafer manufacturing platform

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Semiconductors 2022年第10期43卷 64-72页

作者： Hongchao Zhang Xiangyue Ma Chuanpeng Jiang Jialiang Yin Shuqin Lyu Shiyang Lu xiantao shang Bowen Man Cong Zhang Dandan Li Shuhui Li Wenjing Chen Hongxi Liu Gefei Wang Kaihua Cao Zhaohao Wang Weisheng Zhao Fert Beijing Institute School of Integrated Science and EngineeringBeihang UniversityBeijing 100191China Truth Memory Tech.Corporation Beijing 100088China Beihang-Goertek Joint Microelectronics Institute Qingdao Research InstituteBeihang UniversityQingdao 266000China

We demonstrate in-plane field-free-switching spin-orbit torque(SOT)magnetic tunnel junction(MTJ)devices that are capable of low switching current density,fast speed,high reliability,and,most importantly,manufactured uniformly by the 200-mm-wafer *** performance of the devices is systematically studied,including their magnetic properties,switch-ing behaviors,endurance and data *** successful integration of SOT devices within the 200-mm-wafer manufactur-ing platform provides a feasible way to industrialize SOT *** is expected to obtain excellent performance of the devices by further optimizing the MTJ film stacks and the corresponding fabrication processes in the future.

关键词： SOT MTJ low switching current densities 200-mm-wafer platform endurance data retention

Orbitronics for energy-efficient magnetization switching

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2024年

作者： Yuxuan YAO Daoqian ZHU Qingtao XIA Jianing LIANG Yuhao JIANG Zhiyang PENG Jiaxu LI Chen XIAO Renyou XU Wenwen WANG xiantao shang Shiyang LU Dapeng ZHU Hongxi LIU Kaihua CAO Weisheng ZHAO Fert Beijing Institute School of Integrated Circuit Science and Engineering Beihang University National Key Lab of Spintronics Institute of International Innovation Beihang University Qingdao Research Institute Beihang University Truth Memory Corporation

Spin-orbit torque (SOT), as a promising writing method for magnetic random-access memory (MRAM), has garnered widespread interest for over a decade [1]. Heavy metals,such as β-W, have been broadly adopted as spin current sources, but suffer from phase change at a limited thickness, resulting in a dramatic reduction of the charge-tospin conversion efficiency θSH [2]. The thickness limitation leads to stringent etching conditions and large distribution among devices, posing challenges for simultaneously satisfying SOT efficiency, etching-stop margins, and back-end-ofline (BEOL) compatibility.

关键词：

HPDL deficiency causes a neuromuscular disease by impairing the mitochondrial respiration

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2021年第8期48卷 727-736页

作者： Yu Sun Xiujuan Wei Fang Fang Yiping Shen Haiyan Wei Jiuwei Li Xianglai Ye Yongkun Zhan xiantao Ye Xiaomin Liu Wei Yang Yuhua Li Xiangju Geng Xuelin Huang Yiyan Ruan Zailong Qin shang Yi Jianxin Lyu Hezhi Fang Yongguo Yu Department of Pediatric Endocrinology and Genetics Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai Institute for Pediatric ResearchShanghai 200092China Key Laboratory of Laboratory Medicine Ministry of EducationZhejiang Provincial Key Laboratory of Medical GeneticsSchool of Laboratory Medicine and Life SciencesWenzhou Medical UniversityWenzhou 325035China Department of Neurology Beijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing 100045China The Maternal and Child Health Care Hospital of Guangxi Zhuang Autonomous Region Guangxi Birth Defects Prevention and Control InstituteNanning 530000China shanghai Children's Medical Center Shanghai Jiao Tong University School of MedicineShanghai 200127China Boston Children's Hospital Harvard Medical SchoolBostonMA 02115USA Department of Endocrinologic and Inherited Metabolic Henan Childen's HospitalZhengzhou Children's HospitalZhengzhou 450078China Department of Radiology Xinhua HospitalShanghai Jiao Tong University School of MedicineShanghai 200092China Department of Rehabilitation Henan Children's HospitalZhengzhou Children's HospitalZhengzhou 450018China Zhejiang Provincial People's Hospital Affiliated People's Hospital of Hangzhou Medical CollegeHangzhou 310014China shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition Shanghai 200092China

Mitochondrial diseases are caused by variants in both mitochondrial and nuclear genomes.A nuclear gene HPDL(4-hydroxyphenylpyruvate dioxygenase-like),which encodes an intermembrane mitochondrial protein,has been recently implicated in causing a neurodegenerative disease characterized by pediatric-onset spastic movement ***,we report six Chinese patients with bi-allelic HPDL pathogenic variants from four unrelated families showing neuropathic symptoms of variable severity,including developmental delay/intellectual disability,spasm,and *** different pathogenic variants are identified,of which five are *** fibroblasts and immortalized lymphocytes derived from patients show impaired mitochondrial respiratory function,which is also observed in HPDL-knockdown(KD)He La *** these He La cells,overexpression of a wild-type HPDL gene can rescue the respiratory phenotype of oxygen consumption *** addition,a decreased activity of the oxidative phosphorylation(OXPHOS)complex II is observed in patient-derived lymphocytes and HPDL-KD He La cells,further supporting an essential role of HPDL in the mitochondrial respiratory ***,our data expand the clinical and mutational spectra of this mitochondrial neuropathy and further delineate the possible disease mechanism involving the impairment of the OXPHOS complex II activity due to the bi-allelic inactivations of HPDL.

关键词： HPDL gene Mitochondrial disease Respiration impairment OXPHOS Respiration chain complexⅡ

Artificial intelligence for the development and implementation guidelines for traditional Chinese medicine and integrated traditional Chinese and western medicine

在线全文

学校读者我要写书评

暂无评论

TMR Modern Herbal Medicine 2021年第2期4卷 15-28页

作者： Yinghui Jin Xiangying Ren Lina Yu Yongbo Wang Qiao Huang Xuhui Li Xiangge Ren Jiaao Lou Kuang Gao Mukun Chen Wenbin Hu xiantao Zeng Hongcai shang Center for Evidence-Based and Translational Medicine Zhongnan Hospital of Wuhan UniversityWuhanChina College of Nursing and Health Henan UniversityKaifengHenanChina Department of Urology Zhongnan Hospital of Wuhan UniversityWuhanChina Henan University of Chinese Medicine ZhengzhouHenanChina College of Medicine Wuhan University of Science and TechnologyWuhanChina School of Computer Science Wuhan UniversityWuhanChina Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing Dongzhimen HospitalBeijing University of Chinese MedicineBeijingChina.

The translation and implementation of clinical practice guidelines(CPGs)for Traditional Chinese Medicine(TCM)and Integrated Traditional Chinese and Western medicine is crucial to the adoption of medical science and technology,but the low operability and slow update of integrated traditional Chinese and Western Medicine guidelines,and the lack of integration between guidelines and clinical practice,result in the guidelines not having the desired clinical effects in *** application of Artificial Intelligence(AI)to the field of CPGs development aims to shorten the development time,optimize and accelerate the whole process of CPG’s *** article summarized the current research and application status of AI in development and implementation CPGs for TCM and Integrated Traditional Chinese and Western medicine and proposed the method of Combining real world data and AI technology to enrich for TCM and Integrated Traditional Chinese and Western medicine.

关键词： Artificial Intelligence Traditional Chinese Medicine Clinical practice guidelines

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

圆台格盘式马铃薯育种试验播种机设计与试验

农业机械学报 2023年第1期54卷 84-93页

作者：杨然兵王婕尚书旗查显涛潘志国王志超海南大学机电工程学院海口570228 青岛农业大学机电工程学院青岛266109

针对我国马铃薯育种试验播种作业效率低,以及株距均匀性差导致的育种试验播种精确性无法满足育种要求等问题,设计了一种采用圆台格盘式排种装置的马铃薯育种试验播种机,使种薯从同一位置进行排种,从而提高株距均匀性。并以株距合格率和... 详细信息

针对我国马铃薯育种试验播种作业效率低,以及株距均匀性差导致的育种试验播种精确性无法满足育种要求等问题,设计了一种采用圆台格盘式排种装置的马铃薯育种试验播种机,使种薯从同一位置进行排种,从而提高株距均匀性。并以株距合格率和株距均匀性变异系数为评价指标,对种薯在排种、导种和落地后的运动状态进行了分析,得出影响上述指标的因素为拖拉机前进速度、格盘投种高度、落种口初始位置与机器前进速度方向夹角;并基于旋转回归正交试验,建立了评价指标与影响因素间的回归模型,得出试验指标最佳时的因素范围;通过田间验证试验得出当拖拉机前进速度为0.14 m/s、格盘投种高度为0.64 m、落种口初始位置与机器前进速度方向夹角为18.24°时,株距合格率为87.1%,株距均匀性变异系数为13.4%,各项性能指标均满足国家标准要求。

关键词：育种马铃薯播种机格盘

维普期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

四川牦牛心包与澳洲黄牛心包对比研究

生物医学工程学杂志 2022年第3期39卷 537-543页

作者：左一聪康珂尚大鹏杨夏燕吴尧虞奇峰温贤涛成都纽脉生物科技有限公司成都611139 四川大学生物医学工程学院/医疗器械监管科学研究院成都610065 上海纽脉医疗科技股份有限公司上海201321 四川大学生物医学工程学院/国家生物医学材料工程技术研究中心成都610064

牛心包作为人工心脏生物瓣关键原材料目前基本依靠进口,已然成为“卡脖子”难题,严重限制了国产生物瓣研发效率,因此牛心包国产化迫在眉睫。本文以四川牦牛心包为样本,在基础性能及抗钙化性能方面与澳洲黄牛心包进行了对比研究,结果表... 详细信息

牛心包作为人工心脏生物瓣关键原材料目前基本依靠进口,已然成为“卡脖子”难题,严重限制了国产生物瓣研发效率,因此牛心包国产化迫在眉睫。本文以四川牦牛心包为样本,在基础性能及抗钙化性能方面与澳洲黄牛心包进行了对比研究,结果表明牦牛心包在外观及厚度方面更优,热皱缩性能、力学性能及抗钙化性能不弱于澳洲心包。本研究初步验证了四川牦牛心包替代澳洲黄牛心包的可行性,为牛心包国产化的推进提供了有力的数据支撑。

关键词：四川牦牛心包澳洲黄牛心包基础性能抗钙化性能

同方期刊数据库

在线全文

学校读者我要写书评

暂无评论

不同检测方法测定水中总锑的研究

皮革制作与环保科技 2021年第23期2卷 79-81页

作者：邵先涛杨龙尚云青山绿水(苏州)检验检测有限公司江苏苏州215000

比较了不同检测方法测定水中的总锑,研究表明:FAAS、GFAAS、AFS、ICP-OES四种方法在曲线范围内均具有良好的线性关系;检出限分别为0.08mg/L、0.6μg/L、0.09μg/L和0.07mg/L,测定下限分别为0.32mg/L、2.4μg/L、0.36μg/L和0.28mg/L;选... 详细信息

比较了不同检测方法测定水中的总锑,研究表明:FAAS、GFAAS、AFS、ICP-OES四种方法在曲线范围内均具有良好的线性关系;检出限分别为0.08mg/L、0.6μg/L、0.09μg/L和0.07mg/L,测定下限分别为0.32mg/L、2.4μg/L、0.36μg/L和0.28mg/L;选择曲线范围内的高、中、低浓度锑标准溶液,分别平行测定6次,相对标准偏差分别为0.5%~1.9%、1.2%~2.3%、1.7%~5.0%、0.8%~3.3%;选择实际样品进行加标,加标回收率分别为95.0%~99.5%、92.2%~98.0%、96.5%~101%、92.0%~96.0%;分别对不同浓度的有证标准物质重复测定6次,相对误差分别为1.3%、0.66%、1.7%和0.33%。实际工作中,可根据水质污染情况及排放标准要求选用相应的分析方法。

关键词：水质总锑检测方法比较

中药渣基活性炭的制备及其对头孢拉定的吸附研究

在线全文

学校读者我要写书评

暂无评论

生物质化学工程 2017年第4期51卷 25-32页

作者：于颖孙显涛陈建秋明广奇商景阁中国药科大学工学院江苏南京211198

以香橼、桂枝和板蓝根3种中药渣为原料,Na2CO3为活化剂,800℃下活化1.5 h制备了香橼活性炭(AC-CM)、桂枝活性炭(AC-RC)和板蓝根活性炭(AC-IT)3种活性炭。采用扫描电镜、红外光谱、比表面积分析、pH值和pH_(pzc)测定等表征手段考察了活... 详细信息

以香橼、桂枝和板蓝根3种中药渣为原料,Na2CO3为活化剂,800℃下活化1.5 h制备了香橼活性炭(AC-CM)、桂枝活性炭(AC-RC)和板蓝根活性炭(AC-IT)3种活性炭。采用扫描电镜、红外光谱、比表面积分析、pH值和pH_(pzc)测定等表征手段考察了活性炭的特性。研究了3种活性炭对头孢拉定的吸附动力学与吸附等温线,考察了不同初始pH值和NaCl质量浓度对吸附过程的影响。结果发现,AC-CM、AC-RC和AC-IT的比表面积分别为453.32、413.78和230.06 m^2/g,pH值分别为9.70、8.23和9.24,pH_(pzc)值分别为9.28、9.21和9.38,活性炭表面主要含有CO、CC以及含N基团,SEM分析显示活性炭表面存在大量的孔结构。AC-CM、AC-RC和AC-IT对头孢拉定的吸附过程均符合伪二级动力学与粒内扩散模型,吸附速率受粒内扩散机制和化学吸附共同控制。Freundlich模型能较好地描述3种活性炭的等温吸附过程,n均大于1,说明吸附过程容易进行。溶液初始pH值对活性炭吸附影响较大,pH值为3(在100 mg/L头孢拉定溶液中,添加0.1 g活性炭,吸附48 h)时,AC-CM、AC-RC和AC-IT对头孢拉定的吸附量最大,分别达到74.76、79.44和62.55 mg/g。溶液中NaCl的存在也增加了活性炭的吸附量。

关键词：中药渣碳酸钠活性炭头孢拉定吸附

内蒙古恩和村晚石炭世二长花岗岩的地球化学特征与成因

在线全文

学校读者我要写书评

暂无评论

黑龙江科技大学学报 2018年第5期28卷 499-503页

作者：商宇航陆胜吴宪涛王键黑龙江科技大学矿业工程学院哈尔滨150022 黑龙江省第五地质勘察院哈尔滨150090

通过对内蒙古东北部恩和村晚石炭世二长花岗岩开展岩石地球化学研究,分析其岩石地球化学特征、岩石成因及所揭示的区域构造背景。研究表明,晚石炭世二长花岗岩的w(SiO_2)为75. 51%~76. 46%,w(Al_2O_3)为12. 09%~12. 92%,全碱w(K_2O+Na_... 详细信息

通过对内蒙古东北部恩和村晚石炭世二长花岗岩开展岩石地球化学研究,分析其岩石地球化学特征、岩石成因及所揭示的区域构造背景。研究表明,晚石炭世二长花岗岩的w(SiO_2)为75. 51%~76. 46%,w(Al_2O_3)为12. 09%~12. 92%,全碱w(K_2O+Na_2O)为7. 26%~7. 67%,K_2O和Na_2O质量分数比值为1. 60~2. 94,属于高钾钙碱性系列。所有样品的稀土配分曲线具有相似的特征,稀土丰度总量δ为111. 9~131. 6μg,轻重稀土分馏明显,(La/Yb)N为1. 10~2. 67,Eu负异常(0. 08~0. 11),微量元素以富集大离子亲石元素Rb、Ba,高场强元素Zr、Ta、Nb相对于大离子亲石元素亏损为特征。晚石炭世二长花岗岩岩浆来源于地壳,形成环境为张性环境,部分可能产生于造山期后构造环境。

关键词：二长花岗岩地球化学晚石炭世内蒙古东北部