检索结果-南通市图书馆

FTIR Spectroscopy Study of Polycarbonate Irradiated by 2.1 GeV Kr Ions

在线全文

学校读者我要写书评

暂无评论

IMP & HIRFL Annual Report 2001年第1期 64-64页

作者： Tian Huixian, jin yunfan, zhu zhiyong, Wang Zhiguang and Sun Youmei

The polycarbonate(Pc)film used in this study is a commercial film of about 21μm in *** films were cut to an area of approximately 18 mm×18 mm and piled up to make a stack of thickness slightly larger than the calcul... 详细信息

关键词： projected slightly stack stopping irradiated chains vacuum irradiation centered broken

Staged dendrite suppression for high safe and stable lithium-sulfur batteries

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 674-683页

作者： Jun Jiang Zhenjie Lu Yanwen Ding Shujun Liu Zhijie Qi Tian Tang yunfan Zhang Zhiyuan Ma jingwen Sun Liang Xue Wenyao Zhang Pan Xiong Xin Wang Junwu zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education Nanjing University of Science and TechnologyNanjing 210094JiangsuChina Jiangsu Pylon Battery Co.Ltd Yangzhou 211400JiangsuChina

The unavoidable dendrite growth and shuttle effect have long been stranglehold challenges limiting the safety and practicality of lithium-sulfur ***,we propose a dual-action strategy to address the lithium dendrite issue in stages by constructing a multifunctional surface-negatively-charged nanodiamond layer with high ductility and robust puncture resistance on polypropylene (PP) *** uniformly loaded compact negative layer can not only significantly enhance electron transmission efficiency and promote uniform lithium deposition,but also reduce the formation of dendrite during early deposition *** importantly,under the strong puncture stress encountered during the deterioration of lithium dendrite growth under limiting current,the high ductility and robust puncture resistance(145.88 MPa) of as-obtained nanodiamond layer can effectively prevent short circuits caused by unavoidable lithium *** Li||Li symmetrical cells assembled with nanodiamond layer modified PP demonstrated a stable cycle of over 1000 h at 2 mA cm^(-2)with a polarization voltage of only 29.3 ***,the negative charged layer serves as a physical barrier blocking lithium polysulfide ions,effectively mitigating capacity *** improved cells achieved a capacity decay of only 0.042%per cycle after 700 cycles at 3 C,demonstrating effective suppression of dendrite growth and capacity attenuation,showing promising prospect.

关键词： Lithium-sulfur batteries Staged dendrite suppression Shuttle effect Surface-negatively-charged nanodiamond

知识产权助力专精特新企业创新发展——基于专利质押融资试点政策的准自然实验

在线全文

学校读者我要写书评

暂无评论

企业经济 2025年第1期44卷 36-46页

作者：王嫒名祝志勇西南大学经济管理学院重庆400715

对于轻资产、重研发的专精特新企业而言,如何开发保护和利用自主知识产权,是企业创新发展道路上需要深入探讨的课题。本文从理论和实证层面考察专利质押融资试点政策对城市专精特新企业创新发展的影响。研究发现:试点政策能够促进城市... 详细信息

对于轻资产、重研发的专精特新企业而言,如何开发保护和利用自主知识产权,是企业创新发展道路上需要深入探讨的课题。本文从理论和实证层面考察专利质押融资试点政策对城市专精特新企业创新发展的影响。研究发现:试点政策能够促进城市专精特新企业数量增长和创新质量提高,并在时间维度上呈现“倒U”型发展趋势;创新人才集聚、融资约束缓解和专利质量提升是试点政策推动专精特新企业创新发展的重要渠道;试点政策对城市行政等级较高、城市区位优势较好和民营企业的作用效果更强。因此,应持续推动专利质押融资政策,多渠道发力支撑高质量发展;充分考虑区域发展特征,制定差异化战略;完善知识产权管理体制,持续优化创新和营商环境。

关键词：专利质押融资试点政策专精特新企业人才集聚融资约束专利质量

维普期刊数据库博看期刊

同方期刊数据库

基于化学强化的连续流类颗粒污泥工艺中试研究

在线全文

学校读者我要写书评

暂无评论

水处理技术 2025年第1期51卷 128-132,138页

作者：朱榕鑫王胤吴嘉利赵志勇中国市政工程西南设计研究总院有限公司四川成都610000 中交集团城乡水环境技术研发中心四川成都610000 四川省黄河流域城乡水系统工程技术研究中心四川成都610000

采用絮凝强化连续流类颗粒污泥工艺对四川省某乡镇污水厂进行了生产性改造试验研究,基于侧流运行模式,评估了该工艺对于进水浓度低、水质和水量波动大的适应性、最佳运行参数和实际处理效果。研究发现,通过复合絮凝剂的投加,污泥的自聚... 详细信息

采用絮凝强化连续流类颗粒污泥工艺对四川省某乡镇污水厂进行了生产性改造试验研究,基于侧流运行模式,评估了该工艺对于进水浓度低、水质和水量波动大的适应性、最佳运行参数和实际处理效果。研究发现,通过复合絮凝剂的投加,污泥的自聚集和颗粒化特性逐渐显现,菌胶团的宏观粒径以及颗粒密度显著增大,当系统污泥浓度控制在7~8 g/L时,污泥粒径可稳定维持在200μm,相较于传统絮状污泥,沉降性能得以大幅提高。当回流比为200%,溶解氧控制在1~2 mg/L,采用5 mg/L CPAM+60 mg/L PAC的絮凝剂复配组合时,出水COD、NH_(3)-N、TN、TP平均浓度分别为25.84、0.55、9.01、0.11 mg/L,均满足《四川省岷江、沱江流域水污染物排放标准》(DB 51/2311-2016)要求。

关键词：颗粒污泥连续流低浓度乡镇污水提标改造絮凝强化

Optimal Design of Multi-channel Water Cooled Radiator for Motor Controller of New Energy Vehicle

在线全文

学校读者我要写书评

暂无评论

CES Transactions on Electrical Machines and Systems 2022年第1期6卷 87-94页

作者： zhu Zhang yunfan Liu jingyuan Wang School of Information and Electrical Engineering Hunan University of Science and TechnologyXiangtan411201China Hunan University of Science and Technology Xiangtan411201China

In order to improve the heat dissipation capability of motor controller for new energy vehicles,the water cooled radiator with multiple channels is optimized in this *** heat conduction between the heat source IGBT and the radiator,the convective heat transfer between the radiator and the coolant,the mechanical strength and the manufacturing cost are comprehensively considered during the optimization *** power loss and thermal resistance of the IGBT unit are calculated at first,and finite element model of the radiator is *** this basis,multi-physics coupling analysis of the water cooled radiator is carried ***,the sensitivity analysis is applied to verify the influence of structural parameters on the heat dissipation performance of the radiator *** influence of coolant inlet velocity v,number of cooling ribs n,height of radiator ribs H on the maximum temperature rise T,the temperature difference ΔT between phase U and W,and the coolant pressure lossΔP are analyzed in depth,and the optimal range of the structural parameters for heat dissipation is ***,an experimental platform was set up to verify the performance of the proposed structure of water cooled radiator for motor controller of new energy *** results show that the heat dissipation capability of the proposed radiator is improved compared with the initial design.

关键词： Motor controller Water cooled radiator Finite element method New energy vehicle

基于DQN-CE算法的电-热综合能源系统能量管理策略

在线全文

学校读者我要写书评

暂无评论

浙江电力 2025年第1期44卷 44-53页

作者：朱杰杰皮志勇陈代才谭洪三峡大学电气与新能源学院湖北宜昌443002 国网湖北省电力有限公司荆门供电公司湖北荆门448000 国网湖北省电力有限公司利川供电公司湖北利川445499

针对电-热综合能源系统中可再生能源输出的不确定性和间歇性问题,提出用于一种电-热综合能源系统能量管理的强化学习方法,以电-热综合能源系统运行成本最低为目标,实现综合能源系统的能量管理。首先,建立电-热综合能源系统能量管理模型... 详细信息

针对电-热综合能源系统中可再生能源输出的不确定性和间歇性问题,提出用于一种电-热综合能源系统能量管理的强化学习方法,以电-热综合能源系统运行成本最低为目标,实现综合能源系统的能量管理。首先,建立电-热综合能源系统能量管理模型;然后,将含可再生能源的电-热综合能源系统能量管理过程转化为马尔可夫决策过程;再次,在DQN-CE(深度Q网络-交叉熵)的基础上进一步提出采用NoisyNet(噪声网络)和自注意力机制来提高智能体优化性能;最后,通过算例分析表明,所提方法训练的智能体能够实时响应可再生能源的不确定性,并能在线管理包含可再生能源在内的电-热综合能源系统的能量。

关键词：噪声网络深度Q网络自注意力机制交叉熵损失函数

同方期刊数据库

Recent Progress on Semi-transparent Perovskite Solar Cell for Building-integrated Photovoltaics

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2020年第3期36卷 366-376页

作者： zhu Yivi SHU Lei FAN zhiyong HKLJST-Shenzheti Research Institute Shenzhen 518057P.R.China Department of Electronic and Computer Engineering Hong Kong University of Science and Technology(HKUST)Clear Water BayKowloonHong Kong SARP.R.China

The electricity consumption of buildings is tremendous;moreover,a huge amount of electricity is lost during *** away this consumption can significantly reduce energy demand and greenhouse effect gas *** of the low-cost and renewable solutions to this issue is to install photovoltaic panels on the buildings themselves,namely,building-integrated photovoltaics(BIPVs).Using this technology,power generation roofs,windows,and facades can harvest solar radiation and convert to electricity for building power ***-transparent perovskite solar cells(ST-PSCs)have attracted tremendous attention for the power generation windows,due to the excellent photoelectric properties,versatile fabrication methods,bandgap tunability,and ***,an overview is provided on the recent progress of ST-PSCs for BIPV,which mainly focuses on the control of perovskite morphology,optical engineering for an efficient and semi-transparent *** also summarize recent development on various transparent electrodes and present prospects and challenges for the commercialization of ST-PSCs.

关键词： Building-integrated photovoltaic Semi-transparent solar cell Perovskites solar cell

Learning accurate template matching with differentiable coarseto-fine correspondence refinement

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

Computational Visual Media 2024年第2期10卷 309-330页

作者： Zhirui Gao Renjiao Yi Zheng Qin yunfan Ye Chenyang zhu Kai Xu College of Computer National University of Defense TechnologyChangsha 410073China

Template matching is a fundamental task in computer vision and has been studied for *** plays an essential role in manufacturing industry for estimating the poses of different parts,facilitating downstream tasks such as robotic *** methods fail when the template and source images have different modalities,cluttered backgrounds,or weak *** also rarely consider geometric transformations via homographies,which commonly exist even for planar industrial *** tackle the challenges,we propose an accurate template matching method based on differentiable coarse-tofine correspondence *** use an edge-aware module to overcome the domain gap between the mask template and the grayscale image,allowing robust *** initial warp is estimated using coarse correspondences based on novel structure-aware information provided by *** initial alignment is passed to a refinement network using references and aligned images to obtain sub-pixel level correspondences which are used to give the final geometric *** evaluation shows that our method to be significantly better than state-of-the-art methods and baselines,providing good generalization ability and visually plausible results even on unseen real data.

关键词： template matching differentiable homography structure-awareness transformers

Fractal detector design and application in maritime target detection

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

Journal of Systems Engineering and Electronics 2017年第1期28卷 27-35页

作者： Xinglin Shen zhiyong Song Yongfeng zhu Qiang Fu ATR Key Laboratory National University of Defense TechnologyChangsha 410073China

The fractal properties of sea clutter are proposed and applied to the maritime target detection. Calculation of the measured data shows that, the Hurst exponent of the sea clutter with targets and the sea clutter without targets are different, which enables us to detect low-observable targets within the sea clutter. This paper explains the reason why the Hurst exponent can distinguish the presence or absence of targets in theory and proposes a fractal detector based on the Hurst exponent. Comparing the fractal detector proposed in this paper to the energy detector by the detection results of 140 frames data of the real sea clutter, it is demonstrated that the fractal detection method has a better detection performance. In order to get systemic conclusions, the new sea clutter data with different signal-to-clutter ratios (SCRs) are constructed in the way that add the sea clutter data with targets to the pure sea clutter data. The results show that the fractal detection method has a better performance than the statistical method on detection of maritime targets, especially maritime weak targets with low SCR. © 1990-2011 Beijing Institute of Aerospace Information.

关键词： Fractals Radar clutter Target tracking