检索结果-南通市图书馆

Performance improvements in complementary metal oxide semiconductor devices and circuits based on fin field-effect transistors using 3-nm ferroelectric Hf_(0.5)Zr_(0.5)O_(2)

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第7期43卷 3242-3249页

作者： Zhao-Hao Zhang yan-Na Luo Gao-Bo xu Jia-xin yao Zhen-Hua Wu Hong-Bin Zhao Qing-Zhu Zhang Hua-xiang yin Jun Luo Wen-Wu Wang Hai-Ling Tu Integrated Circuit Advanced R&D Center Institute of Microelectronics of Chinese Academy of SciencesBeijing 100029China School of Integrated Circuits University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Advanced Materials for Smart Sensing General Research Institute for Nonferrous MetalsBeijing 100088China

In this work,a conventional HfO_(2) gate dielectric layer is replaced with a 3-nm ferroelectric(Fe) HZO layer in the gate stacks of advanced fin field-effect transistors(FinFETs).Fe-induced characteristics,e.g.,negative drain induced barrier lowering(N-DIBL) and negative differential resistance(NDR),are clearly observed for both p-and n-type HZO-based *** characteristics are attributed to the enhanced ferroelectricity of the 3-nm hafnium zirconium oxide(HZO) film,caused by Al doping from the TiAlC capping *** mechanism is verified for capacitors with structures similar to the *** to the enhanced ferroelectricity and N-DIBL phenomenon,the drain current(I_(DS))of the HZO-FinFETs is greater than that of HfO_(2)-FinFETs and obtained at a lower operating ***,circuits based on HZO-FinFET achieve higher performance than those based on HfO_(2)-FinFET at a low voltage drain(V_(DD)),which indicates the application feasibility of the HZO-FinFETs in the ultralow power integrated circuits.

关键词： FinFET Ferroelectric Hafnium zirconium oxide Subthreshold swing Low power

Endoscopic dacryocystorhinostomy in acute dacryocystitis:a multicenter study in China

在线全文

学校读者我要写书评

暂无评论

International Journal of Ophthalmology(English edition) 2024年第9期17卷 1689-1695页

作者： Bang-xun Mao yao-Hua Wang Zhen-Kai Liu Ning-yu An Hai-Li Jin Ming-Ling Wang Wen-Can Wu Bo yu Department of Ophthalmology Central Hospital of LishuiThe Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui 323000Zhejiang ProvinceChina Department of Orbital Disease and Ophthalmic Tumor Affiliated Eye Hospital of Nanchang UniversityNanchang 330000Jiangxi ProvinceChina Department of Ophthalmology Renmin Hospital of ShiyanShiyan 442000Hubei ProvinceChina Eye Hospital of Ningxia Yinchuan 750000Ningxia Hui Autonomous RegionChina Eye Hospital of Wuhu City Wuhu 241000Anhui ProvinceChina Department of Ophthalmology Baoan Central Hospital of ShenzhenShenzhen 518000Guangdong ProvinceChina Department of Orbital and Oculoplastic Surgery Eye Hospital of Wenzhou Medical UniversityWenzhou 325000Zhejiang ProvinceChina

AIM:To repor t the clinical profile,endoscopic dacryocystorhinostomy(En-DCR)management,and acute dacryocystitis(AD)outcomes in ***:Clinical data of 554 adult AD patients(554 eyes)who presented in 7 tertiary eye care centers for 10y from Jan 2010 to Mar 2020 were retrospectively *** profile,En-DCR management,and outcomes of all cases were *** anatomical and functional success were evaluated for 12mo ***:The analysis included 149 males and 368 females with a median age of 55.2y(range:18-84y).There were 459 eyes with a history of epiphora or purulent *** time between a symptom of lacrimal duct obstruction and acute onset was 1 to 540(66.1±58.2)***-nine eyes had a history of the previous acute ***-four eyes developed a cutaneous fistula,while 11 eyes had post septal cellulitis ***-DCR with an anatomical success of 91.7%and functional success of 90.1%.The success rate of the patients with a history of acute episodes and the preoperative fistula was lower than the overall success ***:En-DCR can be performed during an acute episode in AD with a success rate of over 90%.

关键词： acute dacryocystitis endoscopic dacryocystorhinostomy lacrimal sac

RESEARCH ON HyDROFORMING TUBULAR PART WITH LARGE PERIMETER DIFFERENCE

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

Acta Metallurgica Sinica(English Letters) 2008年第2期21卷 133-138页

作者： x.S. Wang S.J. yuan x.R. Huang y.x. yao Z.R. Wang School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 China School of Mechatronics Engineering Harbin Institute of Technology Harbin 150001 China

The tube hydro forming process for manufacturing the tubular part with large perimeter difference was studied by means of experiments and FE simulation. It is an asymmetrical one and the expansion ratio is 70 percent. The part is successfully hydro formed by applying the useful wrinkles to accumulate sufficient metal in the area with large expansion ratio. The thickness distribution is analyzed, and the maximum thinning ratio of the part is 21.6 percent. It is shown from the experiment and simulation results that the tubular part with large perimeter difference, long expansion area and asymmetrical shape can be obtained in one step, applying the useful wrinkles. Typical failure modes were analyzed.

关键词： Hydro forming Large expansion Useful wrinkle Asymmetricalpart

First-Principles Study of Phase Stability and Mechanical Property of Co_3(Al,W) Precipitates with Different Ratio of Al to W in Co Base Alloys

在线全文

学校读者我要写书评

暂无评论

稀有金属材料与工程 2009年第A3期38卷 1-4页

作者： yao Q Su x M yan y Zhao L W Sun J Shanghai Jiaotong University Shanghai 200240 China

The energetics, electronic structure and mechanical property of Co3(Al,W) precipitates with different ratio of Al to W in Co base alloys were investigated by the method of supercell and augmented plane waves plus local orbitals within generalized gradient approximation. The calculated results show that the L12 Co3(Al,W) precipitate is the most stable when the ratio of Al to W is equal to 1. When the content of W is higher than 18.5 at%, the L12 and hexagonal structures co-exist in Co3(Al,W) precipitates at 1173 K. It is also shown that the L12 ordered Co3(Al,W) precipitates have an obvious strengthening effect in the disordered fcc cobalt matrix.

关键词：铝电子结构力学性能碳酸

Naked-eye visualization of lymph nodes using fluorescence nanoprobes in non-human primate-animal models

在线全文

学校读者我要写书评

暂无评论

Nano Research 2024年第8期17卷 7404-7414页

作者： xiaoyuan Ji Binbin Chu xiaofeng Wu Zhiming xia Airui Jiang Chenyu Wang Zhiming Chen Danni Zhong Qiaolin Wei Bin Song Wanlin Li yiling Zhong Houyu Wang Fenglin Dong Min Zhou yao He Suzhou Key Laboratory of Nanotechnology and Biomedicine Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesInstitute of Functional Nano and Soft Materials(FUNSOM)Soochow UniversitySuzhou 215123China School of Public Health Shanghai Jiao Tong University School of MedicineShanghai 200025China Zhejiang University-University of Edinburgh Institute(ZJU-UoE Institute) Zhejiang UniversityHaining 314400China Department of Ultrasound the First Affiliated Hospital of Soochow UniversitySuzhou 215006China State Key Laboratory(SKL)of Biobased Transportation Fuel Technology Zhejiang UniversityHangzhou 310027China School of Pharmacy Hangzhou Normal UniversityHangzhou 311121China Macao Translational Medicine Center Macao University of Science and TechnologyTaipa 999078MacaoChina Macao Institute of Materials Science and Engineering Macao University of Science and TechnologyTaipa 999078MacaoChina

Despite sufficient studies performed in non-primate animal models,there exists scanty information obtained from pilot trials in non-human primate animal models,severely hindering nanomaterials moving from basic research into clinical *** herein present a pioneering demonstration of nanomaterials based optical imaging-guided surgical operation by using macaques as a typical kind of non-human primate-animal ***,taking advantages of strong and stable fluorescence of the small-sized(diameter:~5 nm)silicon-based nanoparticles(SiNPs),lymphatic drainage patterns can be vividly visualized in a real-time manner,and lymph nodes(LN)are able to be sensitively detected and precisely excised from small animal models(e.g.,rats and rabbits)to non-human primate animal models(e.g.,cynomolgus macaque(Macaca fascicularis)and rhesus macaque(Macaca mulatta)).Compared to clinically used invisible near-infrared(NIR)lymphatic tracers(i.e.,indocyanine green(ICG);etc.),we fully indicate that the SiNPs feature unique advantages for naked-eye visible fluorescence-guided surgical operation in long-term *** toxicological analysis in macaque models further provides confirming evidence of favorable biocompatibility of the SiNPs *** expect that our findings would facilitate the translation of nanomaterials from the laboratory to the clinic,especially in the field of cancer treatment.

关键词： fluorescent silicon nanoparticles lymph node real-time naked-eye visualization macaque models

跨域治理中的联合党组织:样态、结构与功能分析

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

湖北社会科学 2024年第6期 33-40页

作者：姚靖北京体育大学马克思主义学院北京100091

在党建引领基层社会治理的宏大背景下,以联合党组织为载体的基层党组织之间的跨域联建逐渐成为地方党委政府推进跨域治理的重要工具。基于W市H区、y市G高新区、N省H市等地的实证调研发现:跨域治理中的联合党组织存在依地域确界的区域型... 详细信息

在党建引领基层社会治理的宏大背景下,以联合党组织为载体的基层党组织之间的跨域联建逐渐成为地方党委政府推进跨域治理的重要工具。基于W市H区、y市G高新区、N省H市等地的实证调研发现:跨域治理中的联合党组织存在依地域确界的区域型联合党组织与依“问题域”确界的事域型联合党组织两种样态,在组织结构上表现为一个依跨域治理需要而建立的、以成员党组织为组成单位的党建联合体,具备鲜明的跨域性、灵活性与类科层化特征。在推进跨域治理实践中,联合党组织不仅打造了一个任务共同体,同时也塑造了一个情感共同体,使得成员党组织之间形成了一种责任连带关系与情感联结纽带,并成功推动了联合党组织从党建联合体到跨域治理共同体的转变。相较于领导小组、工作专班、指挥部等传统跨域治理工具,联合党组织不仅拓展了跨域范围与跨域精准性,还减少了繁杂的多头汇报、请示、审批工作,大幅提高了跨域治理的效率。

关键词：跨域治理基层党建联合党组织党建联合体治理共同体

自组装FeRu双金属纳米催化剂在可逆固体氧化物电池中实现高效稳定的CO-CO_(2)相互转化

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Science China Materials 2024年第5期67卷 1471-1480页

作者：王晶张栋刘通徐安琪罗瑶胡学雷王瑶 Key Laboratory of Green Chemical Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhan430205China School of Power and Mechanical Engineering Wuhan UniversityWuhan430072China

本文报道了一种适应于高效稳定的CO-CO_(2)相互转化的可逆固体氧化物电池(RSOC)相变燃料电极.该燃料电极由FeRu双金属纳米催化剂和Ruddlesden-Popper相Pr_(0.8)Sr_(1.2)Fe_(1-x-y)Ru_(x)Mo_(y)O_(4)氧化物复合而成(FeRu@PSFRM).固体氧化物燃料电池(SOFC)模式时,单电池800℃时的最大输出功率密度可以达到170 W cm^(-2);而在固体氧化物电解池(SOEC)模式下,800℃、1.3 V时电解池的电解电流密度达到-0.256 A cm^(-2).在SOFC-SOEC循环测试过程中,RSOC中CO-CO_(2)相互转化过程经历了“活化-稳定-衰退”三个明显阶段.幸运的是,性能衰退的燃料电极可通过“原位氧化-还原”处理实现性能再生,有效提升该电池的使用寿命.研究结果表明,原位脱溶形成的FeRu@PSFRM材料是一种极具应用潜力的燃料电极候选材料,以期实现高效稳定的CO-CO_(2)相互转化.

关键词： Ruddlesden-Popper oxide CO-CO_(2)conversion cycling test perovskite oxide reversible solid oxide cells distribution of relaxation times electrochemical impedance spectra fuel electrode

在线全文

学校读者我要写书评

暂无评论

煤矿用钻孔机器人钻臂定位误差补偿研究

煤田地质与勘探 2024年第3期52卷 153-163页

作者：梁春苗姚宁平姚亚峰彭涛中煤科工西安研究院(集团)有限公司陕西西安710077 煤炭科学研究总院北京100013

目前钻孔机器人位姿调节多采用手动遥控调节与人工复测结合,未实现全自动调节,开环控制精度低、自动化能力低、无法实现煤矿用探放水、防突和防冲钻孔机器人精确开孔定位与孔群全自动施工。通过分析钻孔机器人钻臂结构和动作,建立了钻... 详细信息

目前钻孔机器人位姿调节多采用手动遥控调节与人工复测结合,未实现全自动调节,开环控制精度低、自动化能力低、无法实现煤矿用探放水、防突和防冲钻孔机器人精确开孔定位与孔群全自动施工。通过分析钻孔机器人钻臂结构和动作,建立了钻臂运动学模型;通过对加工误差、机身变形、装配间隙等影响因素分析,发现采用回转减速器蜗轮蜗杆结构间隙会引起倾角和方位角误差放大,并在机身平时会引起倾角和方位角误差最大达0.85°;为消除误差,首先采用传统钻臂运动学误差补偿方法建立了钻臂静、动态误差补偿模型,利用全站仪测试关节间隙和变形量,基于补偿模型和RBF神经网络法求逆解得到误差补偿量,钻臂期望位姿与实际位姿误差的x方向平均误差为9.6 mm,y方向平均误差为18.2 mm,z方向平均误差为16 mm,满足工程应用要求;其次为解决传统全站仪试验测量的方法的复杂性和非实时性问题,提出了一种通过激光测距仪和高精度开孔定向仪组合获得位姿误差检测的方法,通过测距实时计算实际和理论倾角、方位角差值,作为误差补偿后的新倾角和方位角的控制输入量,对钻臂进行实时误差检测与补偿;最后利用传统全站仪精度检测方法对激光测距组合位姿误差补偿模型进行验证。试验表明:激光测距组合定位误差检测法最大误差差值在±0.5°以内,方位角最大误差在±0.5°以内,比未采用误差补偿前分别提高了41.1%和37.5%,满足了钻孔机器人开孔定位误差要求。在煤炭行业开展了钻孔机器人钻臂在线精确定位与误差补偿研究,对钻孔机器人精确自动开孔定位及孔群全自动施工具有重要的借鉴和指导意义。

关键词：钻孔机器人钻臂定位运动学模型位姿误差检测误差补偿模型煤矿

NUMERICAL INVESTIGATION ON FLOW CHARACTERISTICS IN RIBBED BEND

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2001年第2期13卷 111-120页

作者： yao, J. Fan, J.R. Zhang, x.y. Cen, K.F. Dept. of Energy Engineering Zhejiang Univ. Hangzhou 310027 China

Previous research by the author has proved that ribbed bend technology is a simple and efficient anti-erosion method. The present paper is a further study to unveil the mechanism of the technology by using numerical method. The flow characteristics in ribbed bend were studied. A k-Ε turbulence model was used and the simulations were carried out in the body-fitted coordinates. This procedure was confirmed to be credible by showing the satisfactory agreement between the predications and experimental results. It is concluded that the character of the longitudinal flow in ribbed bend especially in the concave parts between ribs has a beneficial effect on increasing the anti-erosion ability of ribbed bend but the secondary flow has little effect on determining the particle trajectory.

关键词： Boundary conditions Differential equations Erosion Mathematical models Numerical methods Three dimensional