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Journal of Ocean University of China 2021年第5期20卷 1121-1135页

作者： di jiankai MA Chunyong CHEN Ge College of Information Science and Engineering Ocean University of ChinaQingdao 266100China Laboratory for Regional Oceanography and Numerical Modeling Laboratory for Ocean Dynamics and ClimateQingdao National Laboratory for Marine Science and TechnologyQingdao 266237China

The sea surface height data volume of the future wide-swath two-dimensional(2D)altimetric satellite is thousands of times greater than that of nadir altimetric *** time complexity of the 2D altimetry mapping reaches O(n^(3)).It is challenging to map the global grid products of future 2D altimetric *** this study,to improve the efficiency of global data mapping,a new algorithm called parallel-dynamic interpolation(PA-di)was *** the use of 2D data segmentation and fine-grained data mosaic methods,the parallel along-track di processes were accelerated,and a fast and efficient spatial-temporal high-resolution and low-error enhanced mapping method was *** determined from a comparison of the single-threaded di with the PA-di,the new algorithm optimized the time complexity from O(n^(3))to O(n^(3)/KL),which improved the mapping efficiency and achieved the expected *** to the test results of the observing system simulation experiments,the PA-di algorithm may provide an efficient and reliable method for future wide-swath 2D altimetric satellite mapping.

关键词： parallel computation data segmentation data mosaic dynamic interpolation wide-swath 2D altimetric satellite

2020年中国成品油行业运行特点与近期展望

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国际石油经济 2021年第5期29卷 53-59页

作者：孙仁金于楠董秀成邸建凯中国石油大学(北京)经济管理学院对外经济贸易大学国际经贸学院中国石油流通协会

2020年,中国政府对成品油行业"放""管"并重,创新监管方式,加强事中和事后监管,支持"互联网+"、物联网等新业态。同时,成品油市场竞争程度增强,现代能源体系构建及市场化进程加快。2020年,中国成品油产量为3.3亿吨,比上年下降8.1%;表观... 详细信息

2020年,中国政府对成品油行业"放""管"并重,创新监管方式,加强事中和事后监管,支持"互联网+"、物联网等新业态。同时,成品油市场竞争程度增强,现代能源体系构建及市场化进程加快。2020年,中国成品油产量为3.3亿吨,比上年下降8.1%;表观消费量为2.9亿吨,比上年下降6.6%,汽、柴、煤油表观消费量出现本世纪以来首次全部负增长;净出口量回落至5000万吨以下,比上年下降17.6%;全年汽、柴油批零价格整体下行;成品油库存创历史最高位。2021年,中国原油加工量或将首次突破7亿吨大关,炼油能力和成品油产量过剩问题加剧;成品油产量预计将达到4.5亿吨,比上年上涨4.6%;表观消费量约为3.9亿吨,比上年增长2%;净出口量预计将再一次突破5000万吨。

关键词：成品油供需出口政策市场化监管

2021年中国成品油行业运行特点与近期展望

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国际石油经济 2022年第4期30卷 72-78页

作者：孙仁金于楠董秀成邸建凯中国石油大学(北京)经济管理学院对外经济贸易大学国际经贸学院中国石油流通协会

2021年,中国成品油产量稳步增长,需求量基本恢复至疫情前水平;市场整顿力度前所未有,行业准入门槛继续大幅降低;成品油出口规模大幅收窄,出口配额总量急剧下降;成品油库存震荡回落;成品油零售价格总体呈现稳中有升的波动趋势;成品油市... 详细信息

2021年,中国成品油产量稳步增长,需求量基本恢复至疫情前水平;市场整顿力度前所未有,行业准入门槛继续大幅降低;成品油出口规模大幅收窄,出口配额总量急剧下降;成品油库存震荡回落;成品油零售价格总体呈现稳中有升的波动趋势;成品油市场化进程提速;石油成品油流通领域标准化加强;完善成品油税收管理;能源监管清单出台。2022年,中国成品油产量小幅增长,预计需求量达到4.07亿吨。在“双碳”目标指引下,中国成品油行业将向绿色低碳转型持续发力,行业监管和规范化管理加强,推动新一轮产业结构的转型升级和低碳优化调整。

关键词：成品油产能产量需求价格政策监管出口配额市场化改革

Multifunctional dopamine-assisted preparation of efficient and stable perovskite solar cells

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Journal of Energy Chemistry 2021年第3期30卷 291-300页

作者： jiankai Zhang Huangzhong Yu School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640GuangdongChina The Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Normal UniversityWuhu 241000Anhui China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development Guangzhou 510640GuangdongChina South China Institute of Collaborative Innovation Dongguan 523808GuangdongChina

Perovskite solar cells(PSCs)show great potential for next-generation photovoltaics,due to their excellent optical and electrical ***,defects existing inside the perovskite film impair both the performance and stability of the *** Pb^(2+),uncoordinated I^(-),and metallic Pb(Pb^(0))are the main defects occur during perovskite film preparation and device operation,due to the volatilization of organic cationic *** these defects is a desirable tas k,because they are non-radiative recombination centers that cause open-circuit voltage(VOC)loss and degradation of the perovskite ***,the multifunctional bioactive compound dopamine(DA)is introduced for the first time to control the perovskite film formation and passivate the uncoordinated Pb^(2+)defects via Lewis acid-base *** Pb^(0) and I^(-)defects are effectively suppressed by the DA *** the same time,the DA treatment results in a stronger crystal orientation along the(110)plane and upshifts the valence band of perovskite closer to the highest occupied molecular orbital(HOMO)of the hole transport layer(2,2’,7,7’-tetrakis(N,N’-di-pmethoxyphenylamine)-9,9’-spirobifluorene,spiro-OMeTAD),which is beneficial for charge separation and transport ***,the stability of MAPbI_(3)(MA=CH_(3)NH_(3))PSCs prepared with the DA additive(especially the thermal stability)is effectively improved due to the better crystallinity and lower number of defect trap states of the perovskite *** optimized MAPbI3 PSCs maintain approximately 90% of their original power conversion efficiency(PCE)upon annealing at 85℃ for 120 *** best performance triple-cation perovskite(Cs_(0.05)(FA_(0.83)MA_(0.17))_(0.95)Pb(I_(0.83)Br_(0.17))_(3))(FA=formamidinium)solar cell with ITO/SnO_(2)/Cs_(0.05)(FA_(0.83)MA_(0.17))_(0.95)Pb(I_(0.83)Br_(0.17))_(3):DA/spiro-OMeTAD/MoO_(3)/Ag(ITO=indium tin oxide)structure shows a PCE of 21.03% with negligible hysteresis,which is

关键词： Perovskite solar cell Dopamine Defect Passivation Performance

Technical alternatives for coke oven gas utilization in China: A comparative analysis of environment-economic-strategic perspectives

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Environmental Science and Ecotechnology 2024年第5期21卷 168-177页

作者： Zichen di Feixia Lei jiankai Jing Hao Peng Xi Lu Fangqin Cheng Institute of Resources and Environmental Engineering Shanxi UniversityTaiyuan030006PR China School of Environment State Key Joint Laboratory of Environment Simulation and Pollution ControlTsinghua UniversityBeijing100084PR China Institute for Carbon Neutrality Tsinghua UniversityBeijing100084PR China

China is the largest coke producer and *** is a pressing need to address the high emissions of air pollutants and carbon dioxide associated with traditional coking *** the nation pursues a transition towards carbon neutrality,expanding supply chains for coking plants to produce hydrogen,methanol,and other green alternatives has garnered significant ***,the relative advantages of these strategies have remained *** this study,we integrate a life cycle assessmenteconomic analysis-scenario analysis model to evaluate various coke oven gas(COG)utilization routes(COGtM:COG-to-methanol,COGtLNG:COG-to-liquefied natural gas,COGtSA:COG-to-synthetic ammonia,and COGtH:COG-to-hydrogen).The results indicate that COGtSA emerges as the preferred option for balancing environmental and economic ***,COGtM demonstrates economic viability but is associated with higher environmental *** being recognized as a significant strategic direction under carbon neutrality initiatives,COGtH faces economic feasibility and risk resilience *** encounters both financial and environmental challenges,necessitating strategic development from an energy security *** projected coking capacity is anticipated to experience a slight increase in the mid-term yet a significant decline in the long term,influenced by steel production *** potential future markets,COGtM is estimated to potentially capture a maximum market share of 16e34%in the methanol ***,against the backdrop of continuously expanding potential demand for hydrogen,COGtH holds advantages as a transitional solution,but in the long run,it can only meet a small portion of the *** can meet 7e14%of market demand and emerges as the most viable pathway from the viewpoint of balancing environmental and economic aspects and covering future markets.

关键词： Coke oven gas Life cycle assessment Economic analysis Comprehensive benefits Transformation strategy

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基于偏振敏感光学相干层析术的脑胶质瘤成像

中国激光 2024年第9期51卷 254-262页

作者：王玮珂胡慕芸杨迪袁卓群贾晓花杨建凯梁艳梅南开大学现代光学研究所天津市微尺度光学信息技术科学重点实验室天津300350 中国科学院自动化研究所中国科学院分子影像重点实验室北京100190 河北医科大学第二医院神经外科河北石家庄050000

脑胶质瘤是一种侵袭性的恶性原发性脑肿瘤,术中准确区分胶质瘤和正常脑组织极具挑战性。基于高分辨偏振敏感光学相干层析术(PS-OCT)对正常小鼠脑和胶质瘤模型小鼠脑进行成像,计算了强度、累积相位延迟和累积光轴信息。结果表明,从PS-OC... 详细信息

脑胶质瘤是一种侵袭性的恶性原发性脑肿瘤,术中准确区分胶质瘤和正常脑组织极具挑战性。基于高分辨偏振敏感光学相干层析术(PS-OCT)对正常小鼠脑和胶质瘤模型小鼠脑进行成像,计算了强度、累积相位延迟和累积光轴信息。结果表明,从PS-OCT图像中可以清楚地显示出鼠脑中的纤维结构及其取向;借助PS-OCT图像中丰富的偏振信息,可以准确区分鼠脑胶质瘤区和正常区;基于计算的光轴标准差可以有效区分胶质瘤和正常脑组织。研究结果表明,高分辨PS-OCT在脑组织成像及脑胶质瘤识别方面具有很大的临床应用潜力。

关键词：医用光学偏振敏感光学相干层析术脑成像胶质瘤

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融合学习行为策略的改进黑猩猩优化算法

计算机工程与应用 2023年第16期59卷 82-92页

作者：贾鹤鸣林建凯吴迪力尚龙文昌盛饶洪华三明学院信息工程学院福建三明365004 三明学院机电工程学院福建三明365004 三明学院教育与音乐学院福建三明365004

针对黑猩猩优化算法收敛速度慢、寻优精度低以及容易陷入局部最优的问题,提出融合学习行为策略的改进黑猩猩优化算法(modified chimp optimization algorithm,MChOA)。采用准反向学习策略更新种群,增加种群的多样性和随机性,提高算法全... 详细信息

针对黑猩猩优化算法收敛速度慢、寻优精度低以及容易陷入局部最优的问题,提出融合学习行为策略的改进黑猩猩优化算法(modified chimp optimization algorithm,MChOA)。采用准反向学习策略更新种群,增加种群的多样性和随机性,提高算法全局搜索能力,同时避免算法陷入局部最优。基于黑猩猩学习行为策略,通过随机选择“模仿学习”算子或“情绪感应”算子更新黑猩猩个体位置,增强算法局部开发能力,加快算法的收敛速度。选取16个基准函数以及12个CEC2014进行仿真实验测试,结果表明MChOA与传统ChOA相比具有较高的求解精度和较好的寻优性能。通过两个工程设计问题的求解,证明了MChOA在实际工程问题上也具有较高的实际应用价值。

关键词：黑猩猩优化算法准反向学习学习行为策略基准测试函数工程问题求解

ARU-Net:基于残差注意力机制的胸腔积液图像分割模型

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医学信息学杂志 2024年第4期45卷 85-90页

作者：杨靖祎陈隆鑫杨建凯史朝霞底涛刘晓云河北医科大学第二医院数据中心石家庄050000 河北医科大学第二医院信息中心石家庄050000 河北医科大学第二医院神经外科石家庄050000 河北医科大学第二医院医学影像科石家庄050000 河北医科大学第二医院神经内科石家庄050000

目的/意义解决传统胸腔积液分割方法严重依赖先验知识、流程烦琐、耗时费力、性能不佳等问题,提高效率和准确率。方法/过程根据胸部CT图像的积液特征,提出一种基于残差注意力机制的胸腔积液分割模型ARU-Net。以U-Net模型为主干网络,在... 详细信息

目的/意义解决传统胸腔积液分割方法严重依赖先验知识、流程烦琐、耗时费力、性能不佳等问题,提高效率和准确率。方法/过程根据胸部CT图像的积液特征,提出一种基于残差注意力机制的胸腔积液分割模型ARU-Net。以U-Net模型为主干网络,在编码和解码阶段引入残差注意力单元,有效获取图像上下文信息,提高对特征的利用率。结果/结论在测试集上的diCE相似系数达到88.76%,与U-Net和ResU-Net相比在分割完整性和准确性方面具有显著优势,能够满足临床需求。

关键词：胸腔积液深度学习图像分割残差单元注意力机制

益气托毒活血中药复方对溃疡性结肠炎大鼠肠道黏膜屏障的影响

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贵阳医学院学报 2013年第3期38卷 246-250页

作者：欧阳博文黎奕房何家鸣郑建凯陈延广东省中医院消化内科广东广州510370 广东省中医院内科广东广州510370 广州中医药大学

目的:探讨益气托毒活血中药复方对三硝基苯磺酸(TNBS)诱导的大鼠结肠炎肠黏膜上皮细胞紧密连接蛋白的调控,及对肠黏膜屏障可能的保护机制。方法:健康成年SD大鼠52只,7只作为正常对照组,剩余45只大鼠采用TNBS法制作溃疡性结肠炎(UC)大鼠... 详细信息

目的:探讨益气托毒活血中药复方对三硝基苯磺酸(TNBS)诱导的大鼠结肠炎肠黏膜上皮细胞紧密连接蛋白的调控,及对肠黏膜屏障可能的保护机制。方法:健康成年SD大鼠52只,7只作为正常对照组,剩余45只大鼠采用TNBS法制作溃疡性结肠炎(UC)大鼠模型,第3天随机抽取2只解剖,观察造模是否成功,余下的43只大鼠分为模型组13只,柳氮磺吡啶片(SASP)组15只,中药组15只,灌胃治疗10 d后观察病理形态学并进行疾病活动指数(DAI)、结肠黏膜损伤指数(CMdi)评分,用EILSA法测定血清内毒素,用免疫组化法测定紧密连接(tight junction,TJ)相关蛋白咬合蛋白(Occludin)表达。结果:TNBS法诱导大鼠结肠炎后,DAI和CM-di评分增高,血清内毒素(LPS)水平增高,结肠黏膜Occludin蛋白下降;SASP及中药均能降低UC大鼠DAI和CMdi评分,降低血清LPS水平,上调结肠黏膜Occludin蛋白表达,差异均有统计学意义(Pdin蛋白蛋白表达,改善肠黏膜通透性,抑制内毒素通过紧密连接进入体循环,从而起到对UC大鼠肠黏膜屏障的保护作用。

关键词：中药疗法结肠炎溃疡性 Occludin蛋白内毒素肠道黏膜屏障动物模型