检索结果-南通市图书馆

Lane Detection:A Survey with New Results

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 Computer Science & Technology 2020年第3期35卷 493-505页

作者： Dun Liang Yuan-Chen Guo shao-kui zhang Tai-Jiang Mu Xiaolei Huang Department of Computer Science and Technology BNRistTsinghua UniversityBeijing100084China College of Information Sciences and Technology Pennsylvania State UniversityUniversity ParkPA16802USA

Lane detection is essential for many aspects of autonomous driving,such as lane-based navigation and high-definition(HD)map *** lane detection is challenging especially with complex road conditions,considerable progress has been witnessed in this area in the past several *** this survey,we review recent visual-based lane detection datasets and *** datasets,we categorize them by annotations,provide detailed descriptions for each category,and show comparisons among *** methods,we focus on methods based on deep learning and organize them in terms of their detection ***,we introduce a new dataset with more detailed annotations for HD map modeling,a new direction for lane detection that is applicable to autonomous driving in complex road conditions,a deep neural network LineNet for lane detection,and show its application to HD map modeling.

关键词： convolutional neural network(CNN) dataset deep learning high-definition(HD)map lane detection

ScenePalette:Contextually Exploring Object Collections Through Multiplex Relations in 3D Scenes

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 Computer Science & Technology 2024年第5期39卷 1180-1192页

作者： shao-kui zhang Wei-Yu Xie Chen Wang Song-Hai zhang Department of Computer Science and Technology Tsinghua UniversityBeijing 100084China Beijing National Research Center for Information Science and Technology Beijing 100084China

This paper presents ScenePalette,a modeling tool that allows users to“draw”3D scenes interactively by placing objects on a canvas based on their contextual *** is inspired by an important intuition which was often ignored in previous work:a real-world 3D scene consists of the contextually reasonable organization of objects,*** typically place one double bed with several subordinate objects into a bedroom instead of different shapes of ***,abstracts 3D repositories as multiplex networks and accordingly encodes implicit relations between or among ***,basic statistics such as co-occurrence,in combination with advanced relations,are used to tackle object relationships of different *** experiments demonstrate that the latent space of ScenePalette has rich contexts that are essential for contextual representation and exploration.

关键词： computer graphics 3D scene context 3D repository exploration multiplex network embedding

Catalyst–Support Interaction in Polyaniline‑Supported Ni_(3)Fe Oxide to Boost Oxygen Evolution Activities for Rechargeable Zn‑Air Batteries

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

Nano-Micro Letters 2025年第1期17卷 176-190页

作者： Xiaohong Zou Qian Lu Mingcong Tang Jie Wu Kouer zhang Wenzhi Li Yunxia Hu Xiaomin Xu Xiao zhang Zongping shao Liang An Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and TechnologyNanjing University of Information Science and TechnologyNanjing 210044People’s Republic of China Department of Chemistry The Chinese University of Hong KongMa Lin BuildingShatinHong Kong SAR 999077People’s Republic of China WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia Research Institute for Advanced Manufacturing The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARPeople’s Republic of China

Catalyst–support interaction plays a crucial role in improving the catalytic activity of oxygen evolution reaction(OER).Here we modulate the catalyst–support interaction in polyaniline-supported Ni_(3)Fe oxide(Ni_(3)Fe oxide/PANI)with a robust hetero-interface,which significantly improves oxygen evolution activities with an overpotential of 270 mV at 10 mA cm^(-2)and specific activity of 2.08 mA cm_(ECSA)^(-2)at overpotential of 300 mV,3.84-fold that of Ni_(3)Fe *** is revealed that the catalyst–support interaction between Ni_(3)Fe oxide and PANI support enhances the Ni–O covalency via the interfacial Ni–N bond,thus promoting the charge and mass transfer on Ni_(3)Fe *** the excellent activity and stability,rechargeable Zn-air batteries with optimum Ni_(3)Fe oxide/PANI are assembled,delivering a low charge voltage of 1.95 V to cycle for 400 h at 10 mA cm^(-2).The regulation of the effect of catalyst–support interaction on catalytic activity provides new possibilities for the future design of highly efficient OER catalysts.

关键词： Catalyst-support interaction Supported catalysts Heterointerface Oxygen evolution reaction Zn-air batteries

维普期刊数据库

珍珠梅黄酮纳米粒抑制脂多糖诱发肝癌细胞的炎性作用

在线全文

学校读者我要写书评

暂无评论

药学学报 2017年第10期52卷 1549-1553页

作者：邵葵阳张璇焦文君张斯琳张学武延边大学医学院吉林延吉133002

探讨珍珠梅黄酮纳米粒(5,2',4'-trihydroxy-6,7,5'-trimethoxy flavone nanoparticle,TTF1-NP)抑制脂多糖(lipopoiysaccharide,LPS)诱发人肝癌HepG2细胞的炎性作用及调控机制。采用LPS诱发人肝癌HepG2细胞的炎症模型;MTT比色法检测TTF1-NP对人肝癌HepG2细胞增殖作用;Western blot法检测TTF1-NP对LPS诱发的HepG2细胞炎性反应的TLR4和IL-6及AKT/m TOR信号通路关键蛋白的表达作用。结果显示,TTF1-NP能够抑制LPS引起的人肝癌HepG2细胞增殖,抑制TLR4蛋白表达及AKT和m TOR蛋白的磷酸化,抑制炎症因子IL-6和IL-8表达;TTF1-NP抑制胰岛素引起的AKT/m TOR信号通路的活化和TLR4蛋白的表达,从而降低IL-6和IL-8蛋白水平。研究表明,TTF1-NP抑制LPS诱导的人肝癌HepG2细胞的炎性反应,其作用机制可能与AKT/m TOR信号通路有关。

关键词：珍珠梅黄酮纳米粒肝癌炎症蛋白激酶B/哺乳动物雷帕霉素靶蛋白信号通路

维普期刊数据库

Stable copper boron–imidazolate cage as Cu-riched enzyme for highly efficient electrocatalytic CO2 reduction to ethylene

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年

作者： Jun-Qiang Chen Qiao-Hong Li Qin-Long Hong Ping shao Hai-Xia zhang Jian zhang State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences

Single-atom catalyst has garnered widespread attention to mimic mature enzymes due to its well-defined atomic structure and coordination environments. However, since the carbon–carbon（C–C） coupling reactions require synergistic catalysis of multiple sites, single-atom catalysts suffer from insufficient active sites and unclear reaction mechanisms. Controlling the reaction intermediates in a precisely targeted pocket through careful metal–organic cage design is therefore crucial. Here, we prepare a tetrahedral [Cu6L4]-type boron–imidazolate cage integrating highly active Cu sites and optimized cavity, which exhibits enzyme like specific catalytic performance in electrochemical CO2reduction reaction（CO2RR） to enhance the selectivity of *** analyses and computational calculations suggest that the single Cu site together with neighboring boron–imidazolate ligands provides suitably synergistic effects that enable the energetically favorable formation of an *COCHO intermediate, a key step determining selectivity. As a result, the [Cu6L4]-type cage of BIC-145 achieves a Faradaic efficiency of 28% for C2H4maintaining an average current density of -3.54 mA cm-2over a 5-hour electrolysis period. This work represents the first example for studying single-metal site catalysts with ultra-low coordination numbers through the rational design of metal–organic cages.

关键词：

Insufficient MIRO1 contributes to declined oocyte quality during reproductive aging

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Life Sciences 2025年

作者： Zhen-Nan Pan Hao-Lin zhang Kun-Huan zhang Jia-Qian Ju Jing-Cai Liu shao-Chen Sun College of Animal Science and Technology Nanjing Agricultural University Reproductive Medicine Centre The Affiliated Yantai Yuhuangding Hospital of Qingdao University

Mitochondrial Rho-GTPase 1 (MIRO1) is an outer mitochondrial membrane protein which regulates mitochondrial transport and mitophagy in mitosis. In present study, we reported the crucial roles of MIRO1 in mammalian oocyte meiosis and its potential relationship with aging. We found that MIRO1 expressed in mouse and porcine oocytes, and its expression decreased in aged mice. MIRO1 deficiency caused the failure of meiotic resumption and polar body extrusion in both mouse and porcine oocytes, which could be rescued by exogenous MIRO1supplementation. Mass spectrometry data indicated that MIRO1 associated with several cytoskeleton and cell cycle-related proteins, and MIRO1 regulated motor protein Dynein for microtubule-organizing centers (MTOCs) dynamics at germinal vesicle (GV) stage, which determined meiotic resumption. Furthermore, we found that MIRO1 regulated Aurora A and kinesin family member 11 (KIF11) for meiotic spindle assembly in oocytes. Besides, MIRO1 associated with several mitochondria-related proteins dynamic-related protein 1 (DRP1),Parkin and lysosomal-associated membrane protein 2 (LAMP2) for mitochondrial dynamics and mitophagy during oocyte meiosis. Taken together, our results suggested that MIRO1 played pivotal roles in meiotic resumption, spindle assembly and mitochondrial function in mouse and porcine oocytes, and its insufficiency might contribute to the oocyte maturation defects during aging.

关键词：

Alkaline leaching mechanism of MSWI bottom ash: the pivotal role of Si(Al) chemical bonding environments

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China Technological Sciences 2025年

作者： Ningning shao Zekun JIAO Weipeng FENG Yu JIN Fanlong KONG Zhijun DONG Zuotai zhang Institute of Technology for Marine Civil Engineering Shenzhen Institute of Information Technology (SZIIT) Guizhou NASH Ecological Technology Co. LTD School of Environmental Science and Engineering Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City Southern University of Science and Technology (SUSTech)

Municipal solid waste incineration bottom ash(MSWIBA) is a complex assemblage of aluminosilicate materials encompassing diverse solid wastes. Thus, its complexity poses great challenges to their resource utilization. For the sake of the alkali activation use of MSWIBA, this work focused on the characterizations and alkaline leaching experiments of various classified MSWIBA after sorting. Among the different categories of MSWIBA, waste glass(BA-G) and other unidentified slags(BA-O) were identified as potential precursors for alkali activation use. The alkaline leaching experiments proved that alkaline concentration, reaction temperature, reaction time, and raw material classification influenced the leaching process and results. Among these, the Si/Al chemical bonding environments from the material type played a pivotal role. When the materials had Qn(n>2) as the primary bonding structure, steric hindrance by the chain frameworks affected the alkali dissolution process, resulting in gradual disintegration from the outer layers inward. For the materials dominated by Q1frameworks, OH-could penetrate the frameworks, leading to their rapid depolymerization and outward dissolution. Overall, the Si/Al bonding environment played a crucial role in alkaline dissolution, providing theoretical guidance for classifying the alkali-activation utilization of MSWIBA and other aluminosilicate solid wastes.

关键词：

Mn_(12)-Ac磁性分子团簇单晶的热重-差热分析与结构转变

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

物理学报 2004年第11期53卷 4015-4020页

作者：刘颖葛培文苏少奎张丽娟王云平中国科学院物理研究所北京100080 北京化工大学理学院北京100029

通过热重差热分析 (TG DTA) ,考察了Mn1 2 Ac磁性分子晶体从室温到 2 70℃的热失重过程 .结合x射线粉末衍射分析 ,认为在第一个失重阶段 ,即 2 5— 110℃ ,Mn1 2 Ac失去了处于团簇分子间隙的结晶乙酸和结晶水 ,同时失去了团簇分子中... 详细信息

通过热重差热分析 (TG DTA) ,考察了Mn1 2 Ac磁性分子晶体从室温到 2 70℃的热失重过程 .结合x射线粉末衍射分析 ,认为在第一个失重阶段 ,即 2 5— 110℃ ,Mn1 2 Ac失去了处于团簇分子间隙的结晶乙酸和结晶水 ,同时失去了团簇分子中与 4个Mn3+ 配位的 4个H2 O ,Mn1 2 Ac单晶结构被破坏 ,但是团簇分子的基本结构依然存在 ;在第二个失重阶段 ,即 180— 2 30℃ ,Mn1 2 Ac转变为γ Mn2 O3,其中混有少量Mn3O4 .

关键词：分子团簇磁性配位单晶结构 TG-DTA 分子间分子晶体热重-差热分析热失重乙酸

维普期刊数据库

Numerical Simulation of Radiation Transport to Improve Microalgae Cultivation in an Air-Lift Photobioreactor

在线全文

学校读者我要写书评

暂无评论

Journal of Thermal Science 2025年第1期34卷 62-76页

作者： zhang Xianbin LI Mingjia HUNG Tzuchen zhang Zixun Key Laboratory of Thermo-Fluid Science and Engineering of Ministry of Education School of Energy and Power EngineeringXi'an Jiaotong University School of Mechanical Engineering Beijing Institute of Technology Department of Mechanical Engineering Taipei University of Technology

A comprehensive numerical model is developed to simulate the growth of microalgae under light/dark cycling *** purpose of this study is to predict the growth rate of Chlorella vulgaris cultivated in photobioreactors(PBRs) in order to improve the light conditions for microalgae and enhance the photosynthetic *** fluid dynamics(CFD) is used to simulate its internal hydrodynamic *** Lagrangian method is employed to track the movement of microalgae *** radiative transfer equation(RTE)is used to obtain light intensity *** combination of light radiation field and microalgae cell motions is used to construct the light history and they are integrated into the model of the photosynthetic units(PSU) to calculate the microalgae growth *** numerical results demonstrate that enhanced light/dark cycling frequency with ordered mixing can promote efficient microalgae *** effect of the vortex flow field generated by the baffles in an air-lift PBR is analyzed for increasing microalgae growth *** using the 1:1 baffle spacing,the biomass production of microalgae is increased by 41.8% compared to the original PBR.

关键词： light distribution particle tracking photobioreactor structure optimization