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基于Mastercam X Art的浮雕模型CAD/CAM

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组合机床与自动化加工技术 2009年第1期 91-94页

作者：恽志东桂林电子科技大学机电工程学院广西桂林541004

结合Mastercam X Art软件,介绍了复杂浮雕模型的造型设计与数控加工过程。首先将绘制或导入的二维几何图形,通过控制其横截面参数进行膨化处理,快速生成复杂三维浮雕模型;然后对浮雕模型进行数控加工的设置,合理确定其加工工艺参数,动... 详细信息

结合Mastercam X Art软件,介绍了复杂浮雕模型的造型设计与数控加工过程。首先将绘制或导入的二维几何图形,通过控制其横截面参数进行膨化处理,快速生成复杂三维浮雕模型;然后对浮雕模型进行数控加工的设置,合理确定其加工工艺参数,动态仿真整个加工过程;最后通过后置处理程序自动生成浮雕模型的NC代码,实现了复杂浮雕造型的高效率设计与加工。

关键词：二维几何图形浮雕曲面 Mastercam X Art 数控加工

CaH2-promoted activity of Ni-carbonate interface for CO2 methanation

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Journal of Energy Chemistry 2025年第1期100卷 522-532页

作者： Jin-Peng Wang Guo-Cui Mao Hui-Lin Jiang Bao-Xia dong yun-Lei Teng School of Chemistry and Chemical Engineering Yangzhou University

Transition metal-carbonate interfaces often act as active sites in heterogeneous catalytic *** interface between transition metal and metal carbonate exhibits a dynamic equilibrium during the CO2hydrogenation reaction,involving surface carbonate hydrogenation and ***,there have been few reports on engineering the activity of the interface between transition metal and alkaline earth metal carbonate for catalytic *** work demonstrated that the incorporation of CaH2in Ni/CaCO3enhances the CO2methanation activity of the *** CO2conversion for Ni/CaH2-CaCO3reached 68.5%at 400°C,which was much higher than that of the Ni/CaCO3（31.6%） and Ni/CaH2-CaO （42.4%） ***,the Ni/CaH2-CaCO3catalysts remained stable during the stability test for 24 h at 400°C and 8 *** research revealed that CaH2played a crucial role in promoting the activity of the Ni-carbonate interface for ***2could modify the electronic structure of Ni and tune the structural properties of CaCO3to generate medium basic sites （OH groups）,which are favorable for the activation of H2and ***-situ Fourier transform infrared spectroscopy （FTIR） analysis combined with density functional theory calculations demonstrated that CO2activation occurs at the hydroxyl group （OH） on the CaH2-modified Ni-carbonate surface,leading to the formation of CO3H****,our study has confirmed that CO2methanation over the Ni/CaH2-CaCO3catalysts proceeds via the formate pathway.

关键词： CO 2 methanation Metal hydride Ni catalysts Carbonate Metal-carbonate interface

硅锰对室温油分级等温淬火贝氏体球墨铸铁组织和性能的影响

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铸造 2008年第9期57卷 960-962,966页

作者：魏德强恽志东刘军桂林电子科技大学机电工程学院广西桂林541004 中国石油吉林石化分公司吉林132022

研究了室温油分级等温淬火时,硅和锰对贝氏体球墨铸铁磨球组织和性能的影响。试验结果表明:硅含量在3.3%-3.8%时,对贝氏体相变具有诱发作用,使贝氏体球铁组织细化,力学性能提高,锰使贝氏体球墨铸铁的硬度提高韧性降低,合理的硅锰量可提... 详细信息

研究了室温油分级等温淬火时,硅和锰对贝氏体球墨铸铁磨球组织和性能的影响。试验结果表明:硅含量在3.3%-3.8%时,对贝氏体相变具有诱发作用,使贝氏体球铁组织细化,力学性能提高,锰使贝氏体球墨铸铁的硬度提高韧性降低,合理的硅锰量可提高贝氏体球墨铸铁的力学性能。

关键词：分级等温淬火贝氏体球墨铸铁诱发相变

Overview of in-situ oxygen production technologies for lunar resources

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 233-255页

作者： Youpeng Xu Sheng Pang Liangwei Cong Guoyu Qian dong Wang Laishi Li Yusheng Wu zhi Wang College of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center for Green Recycling of Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Innovation Academy for Green Manufacture Chinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China

The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial ***,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic *** oxygen and metal extraction can be achieved using existing metallurgical ***,the ample reserves of water ice on the Moon offer another means for oxygen *** paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental *** delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar *** two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the *** the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the *** review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.

关键词： lunar resources in-situ oxygen production space metallurgy molten lunar regolith electrolysis

Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第1期68卷 288-296页

作者： Shuai Liu Wen-Qiang Xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen Ming-Ming Cao Yao-Wen Chang Hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang zhi-Li Zuo Han Guo Zi-Fei Xu Ying Zeng yun-dong Wu Xiao-Jiang Hao Key Laboratory of Phytochemistry and Natural Medicines (Chinese Academy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese Academy of Sciences Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Bay Laboratory State Key Laboratory of Microbial Metabolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Molecular Biology Experimental Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences yunnan Key Laboratory for Wild Plant Resources Kunming Institute of Botany Chinese Academy of Sciences Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the intricate process of natural product biosynthesis, a metabolon can enhance metabolic flux by associating sequential enzymes. A fungal metabolon, comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G, is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide B. Using notoamide E as a substance, Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation, followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium unit. Subsequently,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol rearrangement. This provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

关键词： metabolon Diels-Alder reaction semipinacol rearrangement biosynthesis notoamides spiro polycyclic alkaloids

Floral Organogenesis and Development of the Tribe Hyoscyameae(Solanaceae)(Ⅱ)——Przewalskia tangutica and Hyoscyamus niger

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Floral Organogenesis and Development of the Tribe Hyoscyamea...

A low redox potential and long life organic anode material for sodium-ion batteries

第六届全国系统与进化植物学青年学术研讨会

作者： Zhang zhi-yun Yang dong-zhi Lu AN-Ming(Laboratory of Systematic and Evolutionary Botany Institute of Botany, the Chinese Academy of Sciences, Beijing 100093)Sun Kun(Northwest Normal University, Lanzhou 730070)

The morphology and evolution of flowers have long been the central concems of plant systematists,geneticists,andreproductive ecologists(Hufford & Diggle,1997).Since 1970’s,the application of the scanning electron micaoscopy hasgreatly prometed the studies of floral organogenesis and *** results have been used to explain the systematicrelationships of angiosperms most at the level of *** tribe Hyoscyameae(Solanaceae)comprises seven genera and is the only group distributed in *** still existed in the range of the tribe *** examle,Hala & Olmstead(1996,only abstract)

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Journal of Energy Chemistry 2025年第1期100卷 557-564页

作者： zhi Li Yang Wei Kang Zhou Xin Huang Xing Zhou Jie Xu Taoyi Kong Junwei Lucas Bao Xiaoli dong Yonggang Wang Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Institute of New Energy Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University Department of Chemistry Boston College School of Materials Science and Engineering Anhui University of Technology

Sodium-ion batteries （SIBs） with organic electrodes are an emerging research direction due to the sustainability of organic materials based on elements like C,H,O,and sodium ***,organic electrode materials for SIBs are mainly used as cathodes because of their relatively high redox potentials（>1 V）.Organic electrodes with low redox potential that can be used as anode are ***,a novel organic anode material （tetrasodium 1,4,5,8-naphthalenetetracarboxylate,Na4TDC） has been developed with low redox potential （<0.7 V） and excellent cyclic *** three-sodium storage mechanism was demonstrated with various in-situ/ex-situ spectroscopy and theoretical calculations,showing a high capacity of 208 mAh/g and an average decay rate of merely 0.022%per ***,the Na4TDC-hard carbon composite can further acquire improved capacity and cycling stability for 1200 cycles even with a high mass loading of up to 20 mg *** pairing with a thick Na3V2（PO4）3cathode (20.6 mg cm-2),the as-fabricated full cell exhibited high operating voltage （2.8 V）,excellent rate performance and cycling stability with a high capacity retention of 88.7% after 200 cycles,well highlighting the Na4TDC anode material for SIBs.

关键词： Organic anode material Low redox potential Composite anode Sodium-ion batteries

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基于特征加工技术在自动数控编程中的应用

组合机床与自动化加工技术 2011年第1期 90-93页

作者：恽志东李海标桂林电子科技大学机电工程学院广西桂林541004

应用MasterCam软件的FBM Mill和FBM Drill两类基于特征加工功能,实现实体零件的自动数控编程。首先,在Solidworks软件中完成实体零件的特征建模,将模型导入至MasterCam软件;然后,设置零件的毛坯尺寸及FBM参数,在指定的机床上自动生成所... 详细信息

应用MasterCam软件的FBM Mill和FBM Drill两类基于特征加工功能,实现实体零件的自动数控编程。首先,在Solidworks软件中完成实体零件的特征建模,将模型导入至MasterCam软件;然后,设置零件的毛坯尺寸及FBM参数,在指定的机床上自动生成所有特征零件加工部分的二维刀具路径;最后利用数控加工仿真验证了自动生成的基于特征的NC刀具轨迹。采用基于特征加工技术消除了实体零件铣削和钻削编程操作中所涉及的特征识别的手动工艺流程,大大提高了编程效率与编程灵活性,是实现自动数控编程的一种有效方法和手段。

关键词： MasterCam 基于特征加工自动数控编程特征

低合金贝氏体球墨铸铁磨球热处理工艺参数的确定

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机械工程材料 2006年第7期30卷 59-62页

作者：魏德强薛兴恽志东桂林电子科技大学机电与交通工程系广西桂林541004

研究了室温油分级等温淬火热处理工艺参数对低合金贝氏体球墨铸铁磨球组织和性能的影响。结果表明：试验条件下最佳热处理工艺参数为奥氏体化温度930～950℃,出油温度180～220℃,出油入炉时间60 s,等温温度220～240℃,等温时间1～1．5 ... 详细信息

研究了室温油分级等温淬火热处理工艺参数对低合金贝氏体球墨铸铁磨球组织和性能的影响。结果表明：试验条件下最佳热处理工艺参数为奥氏体化温度930～950℃,出油温度180～220℃,出油入炉时间60 s,等温温度220～240℃,等温时间1～1．5 h；此时材料基体组织为下贝氏体+少量的马氏体、残余奥氏体和碳化物,其冲击韧度大于14J／cm^2,硬度为52～56 HRC。

关键词：分级等温淬火贝氏体球墨铸铁磨球