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石油炼化专业技能培训平台的研究

机电产品开发与创新 2024年第4期37卷 189-192页

作者：陈杰吴义维王忠平青岛石大石仪科技有限责任公司山东青岛266000 山东中石大后勤服务有限公司山东青岛266000

石油炼化专业技能培训平台主要围绕化工企业实际生产过程中的流体输送工艺以及物料输送过程中所涉及到的一些问题展开,主要设计思想是将工厂中流体输送相关设备、泵、阀门、仪表、流量计、液位计等诸多元素集中在一套装置中,开展石化专... 详细信息

石油炼化专业技能培训平台主要围绕化工企业实际生产过程中的流体输送工艺以及物料输送过程中所涉及到的一些问题展开,主要设计思想是将工厂中流体输送相关设备、泵、阀门、仪表、流量计、液位计等诸多元素集中在一套装置中,开展石化专业领域的流体输送的相关知识与技能培训。达到提高化工、轻工类院校专业实践教学水平,充分体现职业教育的特色,同时可面向危化企业员工开展入职教育、职业技能提升培训之用。

关键词：化工生产培训平台孪生三维

基于CEVA-XC4500 DSP平台5G-LDPC码编码实现

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无线电工程 2024年第2期54卷 457-462页

作者：吴思远陈成姜明徐安来东南大学信息科学与工程学院江苏南京214135

低密度奇偶校验(Low-Density Parity-Check,LDPC)码是第五代移动通信技术(5th Generation Mobile Communication Technology,5G)系统采用的信道编码技术之一,用于业务信道高速数据传输,具有很强的抗干扰能力和纠错能力。5G-LDPC码编译... 详细信息

低密度奇偶校验(Low-Density Parity-Check,LDPC)码是第五代移动通信技术(5th Generation Mobile Communication Technology,5G)系统采用的信道编码技术之一,用于业务信道高速数据传输,具有很强的抗干扰能力和纠错能力。5G-LDPC码编译码在嵌入式平台的实现是一个值得关注的研究方向。CEVA-XC4500数字信号处理(Digital Signal Processing,DSP)芯片具有极低功耗、高密度计算、集成了超长指令字(Very Long Instruction Word,VLIW)和单指令多数据(Single Instruction Multiple Data,SIMD)矢量功能的特点。针对CEVA-XC4500 DSP矢量汇编指令和内联指令集的特点,提出一系列针对5G-LDPC码编码的代码优化方法,使其满足5G-LDPC码编码工程应用指标要求。仿真结果表明,优化后的5G-LDPC码编码在CEVA-XC4500 DSP内核上表现良好,中长块编码吞吐率超过100 Mb/s、核心矩阵吞吐率超过1 Gb/s,最大吞吐率达到250 Mb/s、最大核心矩阵吞吐率达到1.6 Gb/s。如果CEVA-XC4500 DSP芯片的最大数据位宽将来能进一步增大,吞吐率可以做得更好。该5G-LDPC码编码的代码优化方法为其他信道编码在类似嵌入式平台的实现提供了参考。

关键词： CEVA-XC4500 DSP 超长指令字单指令多数据 5G-低密度奇偶校验码编码矢量化

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多源数据自动构建三维地理场景技术

北京测绘 2024年第9期38卷 1300-1305页

作者：吴晓雯易雅琴林东铨广东省国土资源测绘院广东广州510663 自然资源部华南热带亚热带自然资源监测重点实验室广东广州510663 广东省自然资源科技协同创新中心广东广州510663 广东省地理科学数据中心广东广州510663

随着调查监测技术的进步,广东省自然资源常态化监测工作汇聚了多种感知数据类型,包括遥感影像、监控视频、无人机照片、移动终端照片等。为充分利用这些数据,本文依托多视图立体匹配方法,深入探讨利用多源感知数据自动构建三维地理场景... 详细信息

随着调查监测技术的进步,广东省自然资源常态化监测工作汇聚了多种感知数据类型,包括遥感影像、监控视频、无人机照片、移动终端照片等。为充分利用这些数据,本文依托多视图立体匹配方法,深入探讨利用多源感知数据自动构建三维地理场景的方法,并从调查监测的角度出发,对成果的可读性和实用性进行实证分析。通过对比不同数据源单独建模与本文方法建模成果,充分证实了本文所提方法的有效性,实现了数据成果的再利用,并探索出一种新的三维地理场景构建方法,推动常态化监测工作成果从二维向三维转变。

关键词：调查监测多视图几何三维地理场景物联感知数据多源数据

An Open Source Toolkit for Identifying Comparative Space-time Research Questions

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Chinese Geographical Science 2014年第3期24卷 348-361页

作者： YE Xinyue SHE Bing wu Ling ZHU Xinyan cheng Yeqing Computational Social Science Lab & Department of Geography Kent State University State Key Lab of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University College of Criminal Justice Zhongnan University of Economics and Law Northeast Institute of Geography and Agroecology Chinese Academy of Sciences

Comparative space-time thinking lies at the heart of spatiotemporally integrated social sciences. The multiple dimensions and scales of socioeconomic dynamics pose numerous challenges for the application and evaluation of public policies in the comparative context. At the same time, social scientists have been slow to adopt and implement new spatiotemporally explicit methods of data analysis due to the lack of extensible software packages, which becomes a major impediment to the promotion of spatiotemporal thinking. The proposed framework will address this need by developing a set of research questions based on space-time-distributional features of socioeconomic datasets. The authors aim to develop, evaluate, and implement this framework in an open source toolkit to comprehensively quantify the changes and level of hidden variation of space-time datasets across scales and dimensions. Free access to the source code allows a broader community to incorporate additional advances in perspectives and methods, thus facilitating interdisciplinary collaboration. Being written in Python, it is entirely cross-platform, lowering transmission costs in research and education.

关键词： open source comparative spatiotemporally integrated social sciences

Biomimetic intestinal barrier based on microfluidic encapsulated sucralfate microcapsules

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Science Bulletin 2019年第19期64卷 1418-1425页

作者： cheng Zhao Yunru Yu Xiaoxuan Zhang Xiuwen wu Jianan Ren Yuanjin Zhao Department of General Surgery Jinling HospitalMedical School of Nanjing UniversityNanjing210002China State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China

Intestinal barriers play an important role in preventing intestinally derived diseases,and maintaining their function is a promising approach to prevent and treat those ***,inspired by the protection effect of intestinal barriers in live organisms and the mucosa adhesive property of sucralfate,we present a biomimetic intestinal barrier based on microfluidic encapsulated sucralfate *** from the flexible selectivity and precise control of microfluidic electrospray flows,the generated microcapsules were imparted with stomach-tolerant dietary-fibre shells and controllable released sucralfate cores,both of which could contribute to forming a continuous biomimetic intestinal barrier on the *** in vitro adhesive study,in vivo computed tomography(CT)imaging and in vivo imaging system(IVIS)methods,we have demonstrated that the microcapsule-derived biomimetic intestinal barrier can effectively block food fermentation in the gut,reduce generation of fat,decrease disease risk indexes,and prevent *** features make the microfluidic encapsulated sucralfate microcapsules and their resultant biomimetic intestinal barrier an approach for treating obesity and other intestinal diseases.

关键词： Biomimetic Microfluidics Microcapsule Intestinal barrier Gastrointestinal disease

Solvent-free Synthesis of Dihydrofuran-fused [60]Fullerene Derivatives by High-speed Vibration Milling

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Chinese Chemical Letters 2005年第10期16卷 1327-1329页

作者： Xin cheng Guan wu WANG Yasujiro MURATA Koichi KOMATSU Department of Chemistry University of Science and Technology of China Hefei 230026 Institute for Chemical Research Kyoto University Uji Kyoto 611-0011 Japan

Solvent-free reactions of 1, 3-cyclohexanedione, 5, 5-dimethyl-1, 3-cyclohexanedione, 2, 4-pentanedione and ethyl acetoacetate with C60 in the presence of Mn（OAc）3·2H2O and ceric ammonium nitrate （CAN） under the high-speed vibration milling conditions afforded dihydrofuran-fused C60 derivatives. CAN is the better oxidant than Mn（OAc）3·2H2O in these mechanochemical reactions.

关键词： Fullerene mechanochemical solvent-free 13-dicarbonyl compounds.

认知护理干预在行辅助生殖不孕患者护理中的应用研究

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临床研究 2024年第4期32卷 170-173页

作者：吴亚丽王冰成姣姣郑州大学附属洛阳中心医院生殖助孕科河南洛阳471000

目的分析在行辅助生殖不孕患者中采用认知护理干预的临床效果。方法本研究选取2021年1月至2022年1月期间在郑州大学附属洛阳中心医院收治80例行辅助生殖的不孕患者,运用抽签法分为参照组(n=40例,常规护理)和试验组(n=40例,认知护理干预)... 详细信息

目的分析在行辅助生殖不孕患者中采用认知护理干预的临床效果。方法本研究选取2021年1月至2022年1月期间在郑州大学附属洛阳中心医院收治80例行辅助生殖的不孕患者,运用抽签法分为参照组(n=40例,常规护理)和试验组(n=40例,认知护理干预),对心理状态、周期管理情况、优质胚胎率、妊娠率以及满意度进行比较分析。结果干预后,试验组SAS评分、HAMD评分均低于参照组,差异有统计学意义(P<0.05)。试验组适当运动、合理用药及饮食、知识掌握、不良生活习惯改进周期管理情况均高于参照组,差异有统计学意义(P<0.05)。试验组优质胚胎率(85.00%)、妊娠率(75.00%)高于参照组优质胚胎率(55.00%)、妊娠率(75.00%),差异有统计学意义(P<0.05)。试验组中服务态度评分、沟通能力评分、专业技术评分以及指导能力评分均高于参照组,差异有统计学意义(P<0.05)。结论认知护理干预能够改善行辅助生殖不孕患者的心理状态,还可以提高周期管理情况、优质胚胎和妊娠率,使满意度上升,值得临床应用。

关键词：认知护理干预辅助生殖不孕护理效果

In situ observation of austenite grain growth behavior in the simulated coarse-grained heat-affected zone of Ti-microalloyed steels

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International Journal of Minerals,Metallurgy and Materials 2014年第9期21卷 878-885页

作者： Xiang-liang Wan Kai-ming wu Gang Huang Ran Wei Lin cheng The State Key Laboratory of Refractories and Metallurgy Hubei Collaborative Innovation Center for Advanced Steels Wuhan University of Science and Technology

The austenite grain growth behavior in a simulated coarse-grained heat-affected zone during thermal cycling was investigated via in situ observation. Austenite grains nucleated at ferrite grain boundaries and then grew in different directions through movement of grain boundaries into the ferrite phase. Subsequently, the adjacent austenite grains impinged against each other during the α→γtransformation. After the α→γ transformation, austenite grains coarsened via the coalescence of small grains and via boundary migration between grains. The growth process of austenite grains was a continuous process during heating, isothermal holding, and cooling in simulated thermal cycling. Abundant finely dispersed nanoscale TiN particles in a steel specimen containing 0.012wt% Ti effectively retarded the grain boundary migration, which resulted in refined austenite grains. When the Ti concentration in the steel was increased, the number of TiN particles de- creased and their size coarsened. The big particles were not effective in pinning the austenite grain boundary movement and resulted in coarse austenite grains.

关键词： alloy steel austenite grain growth heat-affected zone coarsening titanium nitride

一种便携式气体自动进样装置的研制及性能验证

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计量与测试技术 2024年第4期51卷 47-48,52页

作者：许诚吴桂锋雷鸣韩可李大伟苏州市计量测试院苏州城市学院苏州市疾病预防控制中心

根据JJG 700-2016《气相色谱仪检定规程》对火焰离子化检测器(FID)和热导检测器(TCD)的检校要求,设计并研制一种便携式气体自动进样装置。该装置可实施气体的连续自动进样,进样体积范围覆盖(0.1~5.0)mL,且性能验证实验测得的连续7次峰... 详细信息

根据JJG 700-2016《气相色谱仪检定规程》对火焰离子化检测器(FID)和热导检测器(TCD)的检校要求,设计并研制一种便携式气体自动进样装置。该装置可实施气体的连续自动进样,进样体积范围覆盖(0.1~5.0)mL,且性能验证实验测得的连续7次峰面积重复性(RSD)为0.9%。同时,装置自身的稳定性和操作的便利性,能有效提高气相色谱仪的计量质量和效率。

关键词：气体自动进样装置气相色谱仪性能验证