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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： Metal hydride Ni catalysts Carbonate Metal-carbonate interface

Effects of Nitrogen Application in Different Wheat Growth Stages on the Floret Development and GrainYield of Winter Wheat

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Agricultural Sciences in China 2002年第10期1卷 1156-1161页

作者： ZHU Yun-ji, WANG Chen-yang, guo Tian-cai, CUI jin-mei, xia guo-jun, LIU Wan-dai and WANG Yong-hua( The National Engineering Research Centre for Wheat, Zhengzhou 450002, P. R . China ) The National Engineering Research Centre for Wheat Zhengzhou 450002 P.R.China

The study was carried out on the effect of nitrogen application in different wheat growth stage on the floret development, the photosynthetic rate, the yield and its components of winter wheat. The result indicated that nitrogen application in the pistil-stamen primordium formation stage and the tetrad formation stage of wheat growth prolonged the duration of floret development, promoted the balance growth of floret and reduced the floret decadence number, thus increased the grain number per spike. Nitrogen application in the middle and in the late stages of wheat development increased the photosynthetic ability of the plant leaves in the later stage, and also lengthened the peak of grain filling stage, thus enhanced the grain weight and yield of wheat significantly.

关键词： Winter wheat Nitrogen application Development of floret Grain yield

PET探测器几何结构与系统响应矩阵关系初探

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核电子学与探测技术 2011年第1期31卷 62-66页

作者：郭金霞曹孝卿谢庆国武汉光电国家实验室(筹) 湖北武汉430074 华中科技大学生命科学与技术学院生物医学工程系湖北武汉430074 华中科技大学数学与统计学院数学与应用数学系湖北武汉430074

PET的系统响应矩阵代表了系统对系统视场(Field Of View,以下简称FOV)中各点的探测灵敏度。它由PET探测器的几何结构和PET数据采集中的各种物理因素决定。如果忽略物理因素的影响,仅考虑探测器几何结构,此时系统响应矩阵被称为几何灵敏... 详细信息

PET的系统响应矩阵代表了系统对系统视场(Field Of View,以下简称FOV)中各点的探测灵敏度。它由PET探测器的几何结构和PET数据采集中的各种物理因素决定。如果忽略物理因素的影响,仅考虑探测器几何结构,此时系统响应矩阵被称为几何灵敏度矩阵,特定的探测器几何结构对应唯一的几何灵敏度矩阵。研究获取了内径相同、晶体数不同的6种环形探测器结构的几何灵敏度矩阵,绘制该矩阵的秩随图像大小变化的曲线,初步探讨几何灵敏度矩阵与不同几何结构探测器采样的关系。该曲线波动特征与系统视场内采样密度变化相一致,且其提供了图像重建可获得唯一解时对应的FOV区域。该结果可以帮助分析重建图像的特征和指导针对不同大小对象成像的探测器选择和设计。

关键词：正电子发射断层成像(PET) 系统响应矩阵灵敏度立体角

Sky location of massive black hole binaries in the foreground of Galactic white dwarf binaries

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 97-108页

作者： Pan guo Hong-Bo jin Cong-Feng Qiao Yue-Liang Wu The International Centre for Theoretical Physics Asia-Pacific University of Chinese Academy of Sciences The School of Physical Sciences University of Chinese Academy of Sciences Institute for Frontiers in Astronomy and Astrophysics Beijing Normal University National Astronomical Observatories Chinese Academy of Sciences Institute of Theoretical Physics Chinese Academy of Sciences

For space-based gravitational wave （GW） detection,the main noise source for massive black hole binaries （MBHBs） is attributed to approximately 10～7double white dwarf binaries in the *** a GW source,the amplitude of the detector response,recorded by a space-based gravitational wave detector,exhibits a modulation effect with a year period when observing the source from various orbital *** the adverse conditions mentioned above,where there is a strong foreground noise and annual modulation in the signals,we employed the wavelet transform and the strong-amplitude relevant orbital position search methods,which allows the weak MBHB sources to achieve higher locating *** detail,for two MBHB sources of lower intensity,the precision of luminosity distance,represented by the ratio ?DL/DLat the 95%confidence level,is enhanced by factors of ～*** angular resolutions,denoted by??s,are enhanced by a factor of ～*** improvements increase the number of detectable GW sources,facilitate multi-messenger follow-up observations and provide constraints on the cosmological constant.

关键词： space-based gravitational wave detection gravitational waves massive black hole binaries

双层社会视域下侦查数据画像的问题分析与构想

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广西警察学院学报 2022年第5期35卷 51-58页

作者：丁鼎郭金霞中国政法大学刑事司法学院北京100088 中国政法大学北京100088

随着信息技术的不断发展,网络平台逐渐成为人们日常生活的第二平台,我国形成了现实社会和网络社会并行的双层社会结构。双层社会视域下,犯罪出现了犯罪场域变化、数据犯罪数量增多、逻辑模式异化等现象,对传统侦查画像提出了挑战。侦查... 详细信息

随着信息技术的不断发展,网络平台逐渐成为人们日常生活的第二平台,我国形成了现实社会和网络社会并行的双层社会结构。双层社会视域下,犯罪出现了犯罪场域变化、数据犯罪数量增多、逻辑模式异化等现象,对传统侦查画像提出了挑战。侦查数据画像具有数据源丰富、普适化程度高、犯罪预测能力强的优势,有助于共享分析第三方数据、精准打击数据犯罪和促进侦查模式由被动型向主动型转变。当前,应从数据资源体系的建立、个性化标签的刻画、犯罪监控和预测、数据平台的开发与应用等四个方面构建侦查数据画像。

关键词：双层社会侦查数据画像标签刻画犯罪预防

固本祛毒益肾汤治疗慢性肾病Ⅲ期60例临床研究

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上海中医药杂志 2008年第3期42卷 29-30页

作者：董飞侠程锦国黄蔚霞陈念昭浙江省温州市中医院肾内科浙江温州325000

目的观察固本祛毒益肾汤结合西医常规治疗慢性肾病Ⅲ期的临床疗效及其对胱抑素-(CCys-C)的影响。方法选择慢性肾病Ⅲ期患者120例,简单随机分为治疗组及对照组各60例;对照组采取低蛋白低磷饮食及西医对症治疗,治疗组在对照组的基础上结... 详细信息

目的观察固本祛毒益肾汤结合西医常规治疗慢性肾病Ⅲ期的临床疗效及其对胱抑素-(CCys-C)的影响。方法选择慢性肾病Ⅲ期患者120例,简单随机分为治疗组及对照组各60例;对照组采取低蛋白低磷饮食及西医对症治疗,治疗组在对照组的基础上结合固本祛毒益肾汤治疗;观察两组临床疗效及治疗前后Cys-C、Scr、BUN、Hb的变化。结果治疗组与对照组临床疗效比较,治疗组总有效率为95%,对照组为60%,组间疗效比较,差异有统计学意义(P0.05);治疗组治疗后Cys-C、Scr、BUN、Hb水平与对照组相比均有显著性差异(P<0.01)。结论固本祛毒益肾汤能改善慢性肾病Ⅲ期患者肾功能、贫血状况,显著降低Cys-C水平。

关键词：慢性肾病Ⅲ期中西医结合疗法固本祛毒益.肾汤胱抑素-C

高血压病患者血清细胞间黏附分子-1和C-反应蛋白的变化及临床意义

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中国实用医药 2008年第6期3卷 20-21页

作者：詹雪亮郭金霞河南省武陟县人民医院 454950

目的探讨高血压病(EH)患者血清可溶性细胞间黏附分子-1(sICAM-1)和C-反应蛋白(CRP)水平的变化及临床意义。方法采用双抗体夹心酶联免疫吸附法检测76例冠心病患者血清sI-CAM-1和CRP水平,42例健康体检者作为对照。结果高血压病患者血清sIC... 详细信息

目的探讨高血压病(EH)患者血清可溶性细胞间黏附分子-1(sICAM-1)和C-反应蛋白(CRP)水平的变化及临床意义。方法采用双抗体夹心酶联免疫吸附法检测76例冠心病患者血清sI-CAM-1和CRP水平,42例健康体检者作为对照。结果高血压病患者血清sICAM-1和CRP水平较对照组明显升高(P<0.01),且随着病情的加重而增高(P均<0.01);高血压病患者血清sICAM-1和CRP水平呈正相关(P<0.01)。结论高血压病患者血清sICAM-1和CRP水平升高,sICAM-1和CRP可能参与了高血压病的发生、发展过程,且与病情程度相关。

关键词：高血压细胞间黏附分子-1 C-反应蛋白