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Facile self-template fabrication of hierarchical nickel-cobalt phosphide hollow nanoflowers with enhanced hydrogen generation performance

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Science Bulletin 2019年第22期64卷 1675-1684页

作者： Xupo Liu Shaofeng deng Peifang Liu Jianing Liang Mingxing Gong chenglong Lai Yun lu Tonghui Zhao Deli Wang Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China Analysis&Testing Center of Xin yang Normal University Xin yang 464000.China

Developing facile methods to construct hierarchical-structured transition metal phosphides is beneficial for achieving high-efficiency hydrogen evolution ***,a self-template strategy of hydrothermal treatment of solid Ni-Co glycerate nanospheres followed by phosphorization is delivered to synthesize hierarchical Ni Co P hollow nanoflowers with ultrathin nanosheet *** microstructure of Ni Co P can be availably tailored by adjusting the hydrothermal treatment temperature through affecting the hydrolysis process of Ni-Co glycerate nanospheres and the occurred Kirkendall *** from the promoted exposure of active sites and affluent mass diffusion routes,the HER performance of the Ni Co P hollow nanoflowers has been obviously enhanced in contrast with the solid Ni Co P *** fabricated Ni Co P hollow nanoflowers yield the current density of 10 m A cmà2at small overpotentials of 95 and 127 m V in 0.5 mol Là1H2SO4and 1.0 mol Là1KOH solution,***,the two-electrode alkaline cell assembled with the Ni Co P and Ir/C catalysts exhibits sustainable stability for overall water *** work provides a simple but efficient method to regulate the microstructure of transition metal phosphides,which is helpful for achieving high-performance hydrogen evolution catalysts based on solid-state metal alkoxides.

关键词： Self-template method Hydrolysis of glycerate nanospheres Kirkendall effect NiCoP hollow nanoflowers Hydrogen evolution reaction

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轴向分段式双爪极永磁电机设计与分析

电机与控制应用 2024年第6期51卷 107-115,I0001页

作者：宋成龙陆艳君安辉邓文宇齐丽君安跃军沈阳工业大学电气工程学院辽宁沈阳110870 沈阳芯源微电子设备股份有限公司辽宁沈阳110169 沈阳中北通磁科技股份有限公司辽宁沈阳110179

永磁同步电机在高频率工况时,定、转子铁心损耗和永磁体涡流损耗都会增加,使电机温度升高,从而导致绝缘老化、永磁体退磁等。为了解决高频损耗增加的问题,设计了一台定、转子铁心材料均为软磁复合材料的轴向分段式爪极定子、单段式爪极... 详细信息

永磁同步电机在高频率工况时,定、转子铁心损耗和永磁体涡流损耗都会增加,使电机温度升高,从而导致绝缘老化、永磁体退磁等。为了解决高频损耗增加的问题,设计了一台定、转子铁心材料均为软磁复合材料的轴向分段式爪极定子、单段式爪极转子的双爪极电机。类似于双凸极结构会出现转矩脉动过大的问题,采用转子磁极偏移和定子斜极相结合的方式降低转矩脉动。最后,对电机的电磁设计和温度分布进行分析,验证设计的合理性。对于爪极参数的选取,研究主要尺寸比、极弧系数、转子磁极偏移距离和定子斜极角度对双爪极电机的气隙磁密、空载反电动势、转矩及转矩脉动的影响。

关键词：双爪极电机电磁设计转矩脉动温度分析

Multiomics and blood-based biomarkers of moyamoya disease: protocol of Moyamoya Omics Atlas (MOYAOMICS)

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中华神经外科杂志(英文) 2024年第3期10卷 211-219页

作者： Ge Peicong Yin Zihan Tao Chuming Zeng Chaofan Yu Xiaofan Lei Shixiong Li Junsheng Zhai Yuanren Ma Long He Qiheng Liu chenglong Liu Wei Zhang Bojian Zheng Zhiyao Mou Siqi Zhao Zhikang Wang Shuang Sun Wei Guo Min Zheng Shuai Zhang Jia deng Xiaofeng Liu Xingju Ye Xun Zhang Qian Wang Rong Zhang Yan Zhang Shaosen Wang Chengjun Yang Ziwen Zhang Nijia Wu Mingxing Sun Jian Zhou Yujia Shi Zhiyong Ma Yonggang Zhou Jianpo Yu Shaochen Li Jiaxi lu Junli Gao Faliang Wang Wenjing Chen Yanming Zhu Xingen Zhang Dong Zhao Jizong Department of Neurosurgery Beijing Tiantan Hospital Capital Medical University Beijing China China National Clinical Research Center for Neurological Diseases Beijing China Department of Neurosurgery Beijing Hospital National Center of Gerontology Beijing China Department of Radiology Beijing Tiantan Hospital Beijing China Department of Ultrasound Beijing Tiantan Hospital Capital Medical University Beijing China Department of Neurology Beijing Tiantan Hospital Beijing China Department of Neurosurgery Beijing Friendship Hospital Capital Medical University Beijing China Department of Neurosurgery Beijing Chaoyang Hospital Capital Medical University Beijing China Department of Neurosurgery Beijing Childrens Hospital Capital Medical University Beijing China Department of Neurosurgery The Affiliated Children’s Hospital Capital Institute of Pediatrics Beijing China Department of Neurosurgery Beijing Changping District Hospital Beijing China Department of Neurosurgery Dongfang Hospital Beijing University of Chinese Medicine Beijing China Department of Neurosurgery Nanjing Drum Tower Hospital The Affiliated Hospital of Nanjing University Medical School Nanjing China Department of NeuroInterventional Surgery Binzhou Medical University Hospital Binzhou Shandong China Department of Neurosurgery Renji Hospital Shanghai Jiao Tong University School of Medicine Shanghai China Department of Neurosurgery The First Affiliated Hospital Zhejiang University School of Medicine Hangzhou China Department of Neurosurgery The First Affiliated Hospital of Xi’an Jiaotong University Shaanxi Xi’an China Department of Neurosurgery West China Hospital Sichuan University Chengdu China Department of Neurosurgery Center for Rehabilitation Medicine Zhejiang Provincial Peoples Hospital Affiliated Peoples Hospital Hangzhou Medical College Hangzhou Zhejiang China Beijing Institute of Hepatology Beijing YouAn Hospital Capital Medical University Beijing China Department of Neu

Background Moyamoya disease (MMD) is a rare and complex cerebrovascular disorder characterized by the progressive narrowing of the internal carotid arteries and the formation of compensatory collateral vessels. The etiology of MMD remains enigmatic, making diagnosis and management challenging. The MOYAOMICS project was initiated to investigate the molecular underpinnings of MMD and explore potential diagnostic and therapeutic *** The MOYAOMICS project employs a multidisciplinary approach, integrating various omics technologies, including genomics, transcriptomics, proteomics, and metabolomics, to comprehensively examine the molecular signatures associated with MMD pathogenesis. Additionally, we will investigate the potential influence of gut microbiota and brain-gut peptides on MMD development, assessing their suitability as targets for therapeutic strategies and dietary interventions. Radiomics, a specialized field in medical imaging, is utilized to analyze neuroimaging data for early detection and characterization of MMD-related brain changes. Deep learning algorithms are employed to differentiate MMD from other conditions, automating the diagnostic process. We also employ single-cellomics and mass cytometry to precisely study cellular heterogeneity in peripheral blood samples from MMD *** The MOYAOMICS project represents a significant step toward comprehending MMD’s molecular underpinnings. This multidisciplinary approach has the potential to revolutionize early diagnosis, patient stratification, and the development of targeted therapies for MMD. The identification of blood-based biomarkers and the integration of multiple omics data are critical for improving the clinical management of MMD and enhancing patient outcomes for this complex disease.

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New SIMS U-Pb geochronology for the Shahezi Formation from CCSD-SK-IIe borehole in the Songliao Basin,NE China

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Science Bulletin 2020年第13期65卷 1049-1051,M0003页

作者： Zhiqiang Yu Huaiyu He chenglong deng Kai lu Zhongshan Shen Qiuli Li State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China

The Songliao Basin,northeastern China(Fig.1a),is one of the largest non-marine petroliferous basins in the world and contains a nearly complete Cretaceous terrestrial sedimentary *** succession provides vital information that can improve our knowledge of a series of important geodynamical,geological,and paleoenvironmental events[1,2].The lower Cretaceous Shahezi Formation,which is the main source rock strata in the basin,formed during the rifting stage of the basin and consists of gray to black lacustrine and floodplain mudstones and siltstones interbedded with gray sandstones and *** unit overlies the Huoshiling Formation and is overlain by the Yingcheng Formation(Fig.1b).

关键词： Cretaceous sandstone mudstone

临夏盆地新近纪郭泥沟剖面磁组构特征及其环境意义

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地球物理学报 2018年第11期61卷 4518-4529页

作者：孔艳芬孙蕗沈中山葛俊逸邓成龙中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京100029 中国科学院地球科学研究院北京100029 中国科学院大学地球与行星科学学院北京100049 中国科学院古脊椎动物与古人类研究所中国科学院脊椎动物演化与人类起源重点实验室北京100044

临夏盆地在东亚新生代地层、古气候、古生物研究方面占有举足轻重的地位.本文对盆地东部的郭泥沟剖面进行了详细的岩石磁学和磁组构研究,以揭示从早中新世到早上新世临夏盆地的沉积演化过程.郭泥沟剖面沉积物中的磁性矿物有磁铁矿、磁... 详细信息

临夏盆地在东亚新生代地层、古气候、古生物研究方面占有举足轻重的地位.本文对盆地东部的郭泥沟剖面进行了详细的岩石磁学和磁组构研究,以揭示从早中新世到早上新世临夏盆地的沉积演化过程.郭泥沟剖面沉积物中的磁性矿物有磁铁矿、磁赤铁矿、赤铁矿和针铁矿,但剩磁载体以磁铁矿和赤铁矿为主.从上庄组和东乡组的褐红色粉砂质粘土到柳树组和何王家组的褐黄色粘土,赤铁矿含量呈现降低的趋势,与沉积物颜色变化一致.郭泥沟剖面沉积物磁组构类型为正常沉积磁组构.结合岩石磁学结果和磁组构参数特征可揭示临夏盆地早中新世-早上新世沉积的演化过程:早中新世上庄组为稳定湖相沉积,古水流方向为NNW,与南北向的大夏河方向一致;中中新世气候发生较明显的干湿波动,形成了东乡组的褐红色湖相粉砂质粘土夹粉砂、砂和青灰色泥灰质粘土条带,古水流方向主要为NNW,沉积过程主要受大夏河控制;中中新世晚期,受青藏高原构造运动影响,沉积相由湖相细粒沉积物转变为虎家梁组河流相砂砾层;同时,盆地的水动力条件也发生改变,晚中新世柳树组湖相沉积过程同时受南北向大夏河和东西向洮河控制,两个方向近垂直的河流共同作用导致柳树组内沉积各向异性度较低,面理和线理均不发育,磁化率最大轴偏角分布比较分散,磁组构确定的古流向为东西向和南北向;早上新世期间,由于受青藏高原隆升影响,沉积了何王家组下部的河流相砂砾层;受构造抬升影响,大夏河重新主导何王家组上部洪泛平原相沉积过程,水动力条件较为单一稳定,古流向主要为N向,与大夏河流向一致.

关键词：临夏盆地郭泥沟剖面新近系磁组构

Magnetochronological sequence of the Early Pleistocene Gigantopithecus faunas in Chongzuo, Guangxi, southern China

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Magnetochronological sequence of the Early Pleistocene Gigan...

Pollen evidence of the palaeoenvironments of lufengpithecus lufengensis in the Zhaotong Basin, southeastern margin of the Tibetan Plateau

中国科学院地质与地球物理研究所2014年度（第14届）学术年会

作者： lu Sun Yuan Wang Caicai Liu Tianwen Zuo Junyi Ge Min Zhu Changzhu Jin chenglong deng Rixiang Zhu State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Vertebrate Evolution and Human Origin of Chinese Academy of Sciences Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of Sciences State Key Laboratory of Earthquake Dynamics Institute of GeologyChina Earthquake Administration

The Gigantopithecus fauna, the most important mammalian fauna during the Early Pleistocene in southern China, was usually excavated from cave or fissure deposits without precise age constraints. Here we present new magnetostratigraphy results for four cave sedimentary sequences in Chongzuo, Guangxi Zhuang Autonomous Region of southern China, from the highest and oldest to the lowest and youngest including Baikong Cave, Juyuan Cave, Sanhe Cave and Queque Cave. Magnetite was identi fied as the major carrier of characteristic remnant magnetizations in the cave deposits. Correlation to the geomagnetic polarity time scale was achieved by combining magnetostratigraphic and biochronologic data. Our correlation suggests that the cave sedimentary sequences span from the pre-Olduvai Matuyama chron to the Jaramillo subchron. The combined magneto-biochronology leads to the establishment of a chronological framework for the Early Pleistocene Gigantopithecus faunas in Chongzuo *** Gigantopithecus faunal succession of Early Pleistocene were assigned to estimated ages of w2.0 Ma(Baikong Cave), w1.8 Ma(Juyuan Cave), w1.2 Ma(Sanhe Cave) and w1.0 Ma(Queque Cave), *** river incision rate in Chongzuo area during this time span was estimated to be w14 mm/ky.

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Pollen evidence of the palaeoenvironments of Lufengpithecus ...

中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： Lin Chang Zhengtang Guo chenglong deng Haibin Wu Xueping Ji Yan Zhao Chunxia Zhang Junyi Ge Bailing Wu lu Sun Rixiang Zhu Key Laboratory of Cenozoic Geology and Environment Institute of Geology and Geophysics Chinese Academy of Sciences University of Chinese Academy of Sciences CAS Center for Excellence in Tibetan Plateau Earth Sciences State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences Department of Paleoanthropology Yunnan Institute of Cultural Relics and Archeology Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences

Evolutionary processes in hominoid primates were closely related to global and/or regional environmental changes, and therefore palaeoenvironmental reconstruction is fundamental for understanding how environmental changes shaped their evolution. Here, we present pollen data from the 16-m-thick Shuitangba(STB) section,Yunnan Province, southwestern China, bearing remains of the hominoid lufengpithecus lufengensis of the terminal Miocene;and use principal component analysis to reconstruct the palaeovegetation and palaeoclimate during the key period when the hominoid lived. Our results show that before the STB hominoid appeared(Zone A), the vegetation was dominated by subtropical evergreen broad-leaved taxa with a few temperate deciduous taxa(e.g., Quercus, Castanea/Castanopsis, Alnus). The development of aquatic plants commencing at the 12 m depth is a prominent feature, indicating a warm and humid climate. During the time when the hominoid lived(Zone B), evergreen broad-leaved forests with evergreen Quercus were predominant, while grasses including Poaceae began to expand, and simultaneously conifers decreased, indicating a warm climate. The significant presence of aquatic pollen taxa in subzone A-2 and Zone B suggests the occurrence of lacustrine or swampy environments. In contrast, in Zone C, the vegetation changed to coniferous forest, indicating cooler and drier conditions. These results provide substantive evidence of the vegetation conditions when the hominoid lived,suggesting that the greater diversity of vegetation and the warm humid climate, compared to the present day,would have favoured its survival.

关键词： Palaeovegetation Pollen Habitat Hominoid Late Miocene Southeastern margin of the Tibetan Plateau

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SiO_2悬浮液的剪切变稀行为

硅酸盐学报 2014年第3期42卷 296-301页

作者：陆成龙彭玮珂员文杰祝洪喜李君邓承继武汉科技大学耐火材料与高温陶瓷国家重点实验室培育基地武汉430081

利用同轴圆筒式流变仪分析SiO2微粉悬浮液的剪切流变行为。借助于透射电子显微镜和扫描电子显微镜观察SiO2微粉的显微结构,研究了SiO2微粉的颗粒团聚现象和团聚颗粒在悬浮液中的解聚过程。结果表明:SiO2颗粒团聚过程满足"Southerland gh... 详细信息

利用同轴圆筒式流变仪分析SiO2微粉悬浮液的剪切流变行为。借助于透射电子显微镜和扫描电子显微镜观察SiO2微粉的显微结构,研究了SiO2微粉的颗粒团聚现象和团聚颗粒在悬浮液中的解聚过程。结果表明:SiO2颗粒团聚过程满足"Southerland ghost"聚集模型,其颗粒结构疏松,影响了悬浮液的剪切流变行为。SiO2悬浮液剪切变稀过程是SiO2微粉团聚颗粒解聚的过程,其流变特性满足Casson模型。该过程分成3个阶段:第1阶段悬浮液三维网络结构被破坏,粒子以颗粒簇的形式存在,悬浮液的黏度迅速降低;第2阶段颗粒簇解聚为颗粒集团,黏度进一步降低;第3阶段颗粒集团不能解聚成原始颗粒,剪切力使颗粒集团内固定的水分子产生流动,黏度缓慢降低。

关键词：二氧化硅悬浮液剪切变稀流变性颗粒团聚

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SiO_2微粉悬浮液的剪切流变行为

硅酸盐学报 2014年第9期42卷 1146-1151页

作者：陆成龙邓承继彭玮珂祝洪喜员文杰李君武汉科技大学省部共建耐火材料与冶金国家重点实验室武汉430081

利用流变仪对SiO2微粉悬浮液进行稳态剪切和动态剪切实验,通过同轴旋转剪切、小振幅振荡剪切、大振幅振荡剪切3种方式对悬浮液的剪切流变行为进行表征,得到悬浮液结构稳定性的动力学条件及结构破坏条件。结果表明:同轴旋转法可对悬浮液... 详细信息

利用流变仪对SiO2微粉悬浮液进行稳态剪切和动态剪切实验,通过同轴旋转剪切、小振幅振荡剪切、大振幅振荡剪切3种方式对悬浮液的剪切流变行为进行表征,得到悬浮液结构稳定性的动力学条件及结构破坏条件。结果表明:同轴旋转法可对悬浮液结构稳定性的强弱进行定性判断,非牛顿系数n能够表征悬浮液结构稳定性的强弱;小振幅振荡法可对其强弱进行定量分析,确定了悬浮液的线性黏弾区,获得了悬浮液结构开始破坏、开始流动时的应变和剪切应力;大振幅振荡法实验下,Cox-Merz经验公式适用于SiO2微粉悬浮液,能够确定存储模量为零的状态,进而得到悬浮液结构完全被破坏时所需的剪切应力和剪切速率。

关键词：流变性二氧化硅微粉悬浮液结构