检索结果-南通市图书馆

NANOTECHNOLOGY AND PRECISION ENGINEERING 2024年第3期7卷 71-78页

作者： Zhao, Wei Xu, Zongwei Wang, Pengfei chen, hanyi Tianjin Univ State Key Lab Precis Measuring Technol & Instrumen Tianjin 300072 Peoples R China Univ Sci & Technol China Dept Modern Phys Hefei 230026 Peoples R China

Nitrogen vacancy (NV) color centers in diamond have useful applications in quantum sensing and fluorescent marking. They can be generated experimentally by ion implantation, femtosecond lasers, and chemical vapor deposition. However, there is a lack of studies of the yield of NV color centers at the atomic scale. In the molecular dynamics simulations described in this paper, NV color centers are prepared by ion implantation in diamond with pre-doped nitrogen and subsequent annealing. The differences between the yields of NV color centers produced by implantation of carbon (C) and nitrogen (N) ions, respectively, are investigated. It is found that C-ion implantation gives a greater yield of NV color centers and superior location accuracy. The effects of different pre-doping concentrations (400-1500 ppm) and implantation energies (1.0-3.0 keV) on the NV color center yield are analyzed, and it is shown that a pre-doping concentration of 1000 ppm with 2 keV C-ion implantation can produce a 13% yield of NV color centers after 1600 K annealing for 7.4 ns. Finally, a brief comparison of the NV color center identification methods is presented, and it is found that the error rate of an analysis utilizing the identify diamond structure + coordination analysis method is reduced by about 7% compared with conventional identification methods.

关键词： NV color center Ion implantation Molecular dynamics (MD) simulation Yield enhancement NV CENTERS

黑龙江省大豆生产的碳足迹时空分布特征及生态优化研究

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

环境监测管理与技术 2024年第3期36卷 21-26页

作者：陈晗奕陈一灵洪志坤游璐萍郑先鑫王琳许章华福州大学环境与安全工程学院福建福州350108 福州大学地理与生态环境研究院福建福州350108

选取我国大豆主产区黑龙江省为研究区,采用生命周期评价(LCA)法核算该地区2011—2020年大豆生产的碳足迹,分析其时空分布特征,利用灰色关联分析法分析全省各地级市(地区)大豆生产碳足迹的影响因素,确定其碳排放的主要来源,提出大豆生产... 详细信息

选取我国大豆主产区黑龙江省为研究区,采用生命周期评价(LCA)法核算该地区2011—2020年大豆生产的碳足迹,分析其时空分布特征,利用灰色关联分析法分析全省各地级市(地区)大豆生产碳足迹的影响因素,确定其碳排放的主要来源,提出大豆生产的生态优化方案。结果表明:2011—2020年黑龙江省大豆生产碳足迹平均值为0.337 kg/kg(以CO 2当量计),整体呈现反复波动、“北多南少”的格局;在所选的9个黑龙江省大豆生产碳足迹影响因素中,农药、种子、柴油3个因素的贡献度最大。

关键词：碳足迹时空分布生态优化大豆生产生命周期评价黑龙江省

Oxidation Behaviour of Sputtered Ni-3Cr-20Al Alloy

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2000年第1期16卷 88-90页

作者： Guofeng chen and hanyi LOU (State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, China) State Key Laboratory for Corrosion and Protection Institute of Metal Research Chinese Academy of Sciences Shenyang 110015 China

The oxidation behavior of sputtered Ni-3Cr-20Al coating at 900℃ in air was investigated. A dense Al2O3 layer was formed on the sputtered Ni-3Cr-20AI coating after 200 h oxidation. However, owing to the segregation of Ni3Al during oxidation process at high temperature, the spinel NiAI2O4 was also formed in the Al2O3 layer. It was found that the formation of NiAI204 had no detrimental effect on the oxidation resistance of the sputtered N?3O-20AI coating due to the excellent adhesion shown by the Al2O3 and NiAl2O4complex oxide scale.

关键词： Al Oxidation Behaviour of Sputtered Ni-3Cr-20Al Alloy Cr Ni

A Graded Speed Control Method for Cyborg Rats Based on Electrical Stimulation of the Cuneiform Nucleus

在线全文

学校读者我要写书评

暂无评论

Journal of Bionic Engineering 2024年第3期21卷 1334-1346页

作者： hanyi Ling Le Han Nenggan Zheng Qiushi Academy for Advanced Studies(QAAS) Zhejiang UniversityHangzhou310007China The State Key Lab of Brain-Machine Intelligence Zhejiang UniversityHangzhou310007China College of Biomedical Engineering&Instrument Science Zhejiang UniversityHangzhou310007China College of Computer Science and Technology Zhejiang UniversityHangzhou310007China CCAI by MOE and Zhejiang Provincial Government(ZJU) Hangzhou310007China

The precise movement speed regulation is a key factor to improve the control effect and efficiency of the cyborg ***,the current stimulation techniques cannot realize the graded control of the *** this study,we achieved the multi-level speed regulation of cyborg rats in the large open field and treadmill by specifically targeting the Cuneiform Nucleus(CnF)of the Mesencephalic Locomotor Region(MLR).Detailed,we measured the influence of each stimulation parameter on the speed control process which included the real-time speed,accelerated speed,response time,and acceleration *** concluded that the pulse period and the pulse width were the main determinants influencing the accelerated speed of cyborg *** the amplitude of stimulation was found to affect the response time exhibited by the cyborg *** study provides valuable insights into the regulation of rat locomotion speed and highlights the potential for utilizing this approach in various experimental settings.

关键词： Cyborg rats Cuneiform nucleus Graded control Speed regulation

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

南宋财权分配与地方治理

江海学刊 2021年第1期 182-186页

作者：黄纯艳陈菡旖华东师范大学历史学系上海师范大学历史学系

财政是国家治理的基础和重要支柱,古今一律,如何通过调整财政体制,更有效地实现国家治理是历朝制度设计的重要内容。中国古代中央集权制下,财政制度设计实现目标,一是财政中央集权;二是各级政府履行职能。但不同时期实现财政中央集权、... 详细信息

财政是国家治理的基础和重要支柱,古今一律,如何通过调整财政体制,更有效地实现国家治理是历朝制度设计的重要内容。中国古代中央集权制下,财政制度设计实现目标,一是财政中央集权;二是各级政府履行职能。但不同时期实现财政中央集权、处理中央与地方财政关系的方式不尽一致。北宋前期实行总量分成的财权分配体制,王安石变法逐步实行税权分配的财权分配体制,南宋实行财权分配的基本制度。

关键词：财权分配财政体制北宋前期中央集权制中央与地方财政关系王安石变法履行职能税权分配

在线全文

学校读者我要写书评

暂无评论

基于不同人群的铅暴露标志及相关易感基因

卫生研究 2010年第5期39卷 643-646页

作者：陈涵一刘莉曹兆进屈卫东复旦大学公共卫生学院环境卫生学教研室公共卫生安全教育部重点实验室上海200032 中国疾病预防控制中心环境与健康相关产品安全所

铅是广泛存在于环境中的有毒重金属。儿童、孕妇、老年人等不同人群铅暴露和代谢动力学特点迥异,而且铅的暴露和效应与机体多个代谢通路和机制有关。除ALAD、VDR、HFE基因外,新近发现铁代谢相关基因(TF)、氧化应激相关基因(Rac2、GPx1、... 详细信息

铅是广泛存在于环境中的有毒重金属。儿童、孕妇、老年人等不同人群铅暴露和代谢动力学特点迥异,而且铅的暴露和效应与机体多个代谢通路和机制有关。除ALAD、VDR、HFE基因外,新近发现铁代谢相关基因(TF)、氧化应激相关基因(Rac2、GPx1、XDH)也是影响机体铅内暴露水平的相关基因。本文综述了不同人群铅暴露特点、代谢特征及不同人群铅暴露敏感标志物,并对全基因组关联研究(GWAS)在该领域中的应用进行展望。

关键词：铅暴露生物标志物易感人群单核苷酸多态性环境毒理学

A novel mouse model of calcific aortic valve stenosis

在线全文

学校读者我要写书评

暂无评论

Animal Models and Experimental Medicine 2024年第4期7卷 523-532页

作者： Ningjing Qian Yaping Wang Wangxing Hu Naifang Cao Yi Qian Jinyong chen Juan Fang Dilin Xu Haochang Hu Shuangshuang Yang Dao Zhou hanyi Dai Dongdong Wei Jian'an Wang Xianbao Liu Department of Cardiology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina State Key Laboratory of Transvascular Implantation Devices China Cardiovascular Key Laboratory of Zhejiang Province HangzhouChina Department of Cardiovascular Surgery The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina Department of Endocrinology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina Binjiang Institute of Zhejiang University HangzhouChina

Background:Calcific aortic valve stenosis(CAVS)is one of the most challenging heart diseases in clinical with rapidly increasing ***,study of the mecha-nism and treatment of CAVS is hampered by the lack of suitable,robust and efficient models that develop hemodynamically significant stenosis and typical calcium ***,we aim to establish a mouse model to mimic the development and features of ***:The model was established via aortic valve wire injury(AVWI)combined with vitamin D subcutaneous injected in wild type C57/BL6 *** transthoracic echocardiography was applied to evaluate aortic jet peak velocity and mean *** specimens were collected and examined in respect of valve thickening,calcium deposition,collagen accumulation,osteogenic differentiation and ***:Serial transthoracic echocardiography revealed that aortic jet peak velocity and mean gradient increased from 7 days post model establishment in a time depend-ent manner and tended to be stable at 28 *** with the sham group,sim-ple AVWI or the vitamin D group,the hybrid model group showed typical pathological features of CAVS,including hemodynamic alterations,increased aortic valve thicken-ing,calcium deposition,collagen accumulation at 28 *** addition,osteogenic dif-ferentiation,fibrosis and inflammation,which play critical roles in the development of CAVS,were observed in the hybrid ***:We established a novel mouse model of CAVS that could be induced efficiently,robustly and economically,and without genetic *** provides a fast track to explore the underlying mechanisms of CAVS and to identify more effec-tive pharmacological targets.

关键词： animal model calcific aortic valve stenosis valve calcification

基于数据特征提取的风电功率预测误差估计方法

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

电力系统自动化 2014年第16期38卷 22-27,34页

作者：张凯锋杨国强陈汉一王颖丁恰复杂工程系统测量与控制教育部重点实验室东南大学自动化学院江苏省南京市 210096 国电南瑞科技股份有限公司江苏省南京市211106

估计风电功率预测误差对电力系统的调度与控制、安全与防御等方面具有重要意义。从风电历史数据和日前预测数据特征提取的角度,研究了日前风电功率预测误差的估计方法。首先,提取并分析影响风电功率预测误差的主要因素,包括风电出力波... 详细信息

估计风电功率预测误差对电力系统的调度与控制、安全与防御等方面具有重要意义。从风电历史数据和日前预测数据特征提取的角度,研究了日前风电功率预测误差的估计方法。首先,提取并分析影响风电功率预测误差的主要因素,包括风电出力波动程度、风电功率幅值、预测方法等,并通过数据统计分析其相关性。然后,结合风电历史运行数据,采用多元线性回归方法建立风电功率预测误差的估计模型。最后,基于比利时电力运营商Elia公开的风电场实际运行数据,进行了仿真算例分析。所述方法也在中国西北部某省调度系统上应用于备用需求分析,并实现了试运行。

关键词：风电预测误差估计历史变化规律预测精度数据特征分析多元线性回归

综合性护理在妊高症产妇中的效果及对分娩结局的影响

在线全文

学校读者我要写书评

暂无评论

实用妇科内分泌电子杂志 2021年第24期8卷 117-119页

作者：柳薇陈翰怡苏州市第五人民医院重症医学科江苏苏州215000

目的探讨综合性护理在妊娠期高血压综合征(妊高症)产妇中的效果及对分娩结局的影响。方法选取60例分娩的妊高症产妇,采用随机抽签法分为观察组与对照组,每组30例。对照组应用常规护理,观察组应用综合性护理。对比两组护理满意度、血... 详细信息

目的探讨综合性护理在妊娠期高血压综合征(妊高症)产妇中的效果及对分娩结局的影响。方法选取60例分娩的妊高症产妇,采用随机抽签法分为观察组与对照组,每组30例。对照组应用常规护理,观察组应用综合性护理。对比两组护理满意度、血压水平及分娩结局。结果观察组情绪护理、疾病护理、分娩指导、生活护理、护理态度、护患沟通、人文关怀及制度落实评分均显著高于对照组,差异有统计学意义(P0.05);护理后,两组SBP、DBP水平均低于护理前,且观察组显著低于对照组,差异有统计学意义(P<0.05)。观察组分娩不良结局发生率10.00%明显低于对照组33.33%,差异有统计学意义(P<0.05)。结论妊高症产妇实施综合性护理具有理想效果,可有效改善血压水平及分娩结局,同时还可提升产妇护理满意度,应用价值显著。

关键词：妊娠期高血压综合征综合性护理应用效果分娩结局

空气污染、规避行为和家庭电力消费——来自中国地级市的证据

在线全文

学校读者我要写书评

暂无评论

经济学（季刊） 2023年第5期23卷 1865-1882页

作者：陈涵一史铁王临风郑安刚东北财经大学金融学院嘉兴学院经济学院南京财经大学财政与税务学院中国电力科学研究院

基于2018—2019年中国地级市居民家庭的日度电力消费数据,本文估计了空气污染对居民家庭电力消费的影响。研究发现,每日空气质量指数(AQI)每增加1个标准差,会导致居民家庭日平均电力消费增加0.05千瓦·时。据此计算清洁空气的支付意愿... 详细信息

基于2018—2019年中国地级市居民家庭的日度电力消费数据,本文估计了空气污染对居民家庭电力消费的影响。研究发现,每日空气质量指数(AQI)每增加1个标准差,会导致居民家庭日平均电力消费增加0.05千瓦·时。据此计算清洁空气的支付意愿和空气污染的额外损失:居民家庭每年愿意为清洁空气多支付14.6元电费;若空气质量达到WHO的标准,全国每年平均电力消费将减少125.1亿千瓦·时,全国居民每年可少支付72.12亿元电费,这也意味着会减少776万吨电力部门的碳排放。

关键词：电力消费空气污染规避行为