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Millisecond dynamics of colloidal suspension studied by X-ray photon correlation spectroscopy at the Shanghai Synchrotron Radiation Facility

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Nuclear Science and Techniques 2024年第1期35卷 1-9页

作者： Chen-Hui Cui Zi-Mu Zhou Lin-Feng Wei Song-Lin Li Feng Tian Xiu-Hong Li Zhi Guo Yi-Hui Xu Huai-Dong Jiang Ren-zhong tai Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing 100049China Center for Transformative Science ShanghaiTech UniversityShanghai 201210China

X-ray photon correlation spectroscopy(XPCS)has emerged as a powerful tool for probing the nanoscale dynamics of soft condensed matter and strongly correlated materials owing to its high spatial resolution and penetration capabilities.This technique requires high brilliance and beam coherence,which are not directly available at modern synchrotron beamlines in China.To facilitate future XPCS experiments,we modified the optical setup of the newly commissioned BL10U1 USAXS beamline at the Shanghai Synchrotron Radiation Facility(SSRF).Subsequently,we performed XPCS measurements on silica suspensions in glycerol,which were opaque owing to their high concentrations.Images were collected using a high frame rate area detector.A comprehensive analysis was performed,yielding correlation functions and several key dynamic parameters.All the results were consistent with the theory of Brownian motion and demonstrated the feasibility of XPCS at SSRF.Finally,by carefully optimizing the setup and analyzing the algorithms,we achieved a time resolution of 2 ms,which enabled the characterization of millisecond dynamics in opaque systems.

关键词： XPCS SSRF Silica suspension Glycerol Brownian motion Millisecond dynamics

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高性能玻璃纤维优化水泥基复合材料的应用

建筑技术开发 2024年第7期51卷 11-13页

作者：钟汰甬贵州省建设投资集团有限公司贵阳550014

为解决深部充填体固结效果差、强度低、易开裂的技术难题,研究通过调整玻璃纤维含量和优化水泥基混合物的配比,使复合材料可以应用在房屋墙体结构中,结果显示,PA66添加量为10wt%时,复合材料可展现出最佳的流动性和加工性能。在力学性能... 详细信息

为解决深部充填体固结效果差、强度低、易开裂的技术难题,研究通过调整玻璃纤维含量和优化水泥基混合物的配比,使复合材料可以应用在房屋墙体结构中,结果显示,PA66添加量为10wt%时,复合材料可展现出最佳的流动性和加工性能。在力学性能方面,虽然拉伸强度和拉伸模量随PA66添加量的增加而降低,但弯曲强度却呈现增强趋势,表明PA66的添加量对提高复合材料的弯曲性能具有积极作用,该结构体系具有装配化程度高、安全裕度大、抗侧刚度和抗侧承载力强等特点。

关键词：高性能玻璃纤维耐候性 PA66 结构安全墙体结构

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不起诉听证的实践图景与理想样态

内蒙古大学学报（哲学社会科学版） 2024年第2期56卷 97-107页

作者：李辞陈忠泰福州大学法学院福建福州350116

作为规范不起诉裁量权行使的一项司法程序,不起诉听证的引入旨在增强审查起诉程序的公开性与对抗性,以在查明案件事实的前提下实现“定分止争”的诉讼目的。身具社会评价职能的听证员介入听证程序,形成了“控辩审听”的全新审查起诉构... 详细信息

作为规范不起诉裁量权行使的一项司法程序,不起诉听证的引入旨在增强审查起诉程序的公开性与对抗性,以在查明案件事实的前提下实现“定分止争”的诉讼目的。身具社会评价职能的听证员介入听证程序,形成了“控辩审听”的全新审查起诉构造。不起诉听证实践却表明,检察机关主持下的听证程序仍未脱离传统书面审查模式的桎梏,听证案件的选择背离了“应听尽听”的制度初衷,听证员参与的实质性不足,案件评议流于形式,听证程序由“检察主持”异化为“检察主导”。不起诉听证程序应回归多方参与的诉讼构造,重视辩护方的权利保障,增强听证员参与的实质性,确立争议点主导模式,探索“不起诉听证+”机制。

关键词：检察听证社会治理不起诉听证家长制司法争议点主导模式

Proximate causes of dispersal for female Yunnan snub-nosed monkeys

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Zoological Research 2020年第1期41卷 78-83页

作者： Wan-Cai Xia Sheng-Nan Ji Bao-Ping Ren Xin-Ming He tai zhong Ali Krzton Yun Tang Da-Yong Li Institute of Rare Animals and Plants China West Normal UniversityNanchongSichuan 637009China School of Ecology and Nature Conservation Beijing Forestry UniversityBeijing 100083China Key Laboratory of Southwest China Wildlife Resources Conservation(Ministry of Education) China West Normal UniversityNanchongSichuan 637009China State Environmental Protection Key Laboratory of Regional Ecological Processes and Functions Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China Key Laboratory of Animal Ecology and Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Baimaxueshan Natural Nature Reserve DiqingYunnan 674400China RBD Library Auburn UniversityAL 36849USA

DEAR EDITOR,Individual dispersal trends, unquestionably important for species ecology and evolution, are affected by multiple factors. Understanding the factors that influence female dispersal strategies offers important insight into primate dispersal mechanisms and female choice. To investigate the proximate causes of dispersal in female Yunnan snub-nosed monkeys (Rhinopithecus bieti), we observed and analyzed nine years of detailed dispersal and demographic data from a population of R. bieti in Xiangguqing, Baimaxueshan Nature Reserve, Yunnan Province, China. Results showed that females who lived long-term in a one-male unit (OMU), without giving birth and with few or no relatives, were more likely to leave that OMU. In addition, an OMU led by an outgroup male and containing more female relatives was significantly more likely to be chosen for immigration. Conversely, greater male age, longer male tenure, and more potentially fertile females discouraged immigration into an OMU. These results suggest that reproduction, male quality, and kin cooperation play the largest roles in female Yunnan snub-nosed monkey dispersal.

关键词： likely relatives cooperation

Picosecond time-resolved X-ray ferromagnetic resonance measurements at Shanghai synchrotron radiation facility

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Nuclear Science and Techniques 2022年第5期33卷 126-134页

作者： Xia Yang Jie-Feng Cao Jun-Qin Li Fang-Yuan Zhu Rui Yu Jian He Zi-Long Zhao Yong Wang Ren-zhong tai Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China

An experimental picosecond time-resolved X-ray ferromagnetic resonance(TR-XFMR)apparatus with a time resolution of 13 ps(RMS)or 31 ps(FWHM)was constructed and demonstrated in the 07U and 08U1A soft X-ray beamlines at the Shanghai Synchrotron Radiation Facility(SSRF)using pump-probe detection and X-ray magnetic circular dichroism(XMCD)spectroscopy.Element and time-resolved ferromagnetic resonance was excited by continuous microwave phase-locking of the bunch clock within the photon beam during synchrotron radiation and was characterized by detecting the magnetic circular dichroism signals of the elements of interest in the magnetic films.Using this equipment,we measured the amplitude of the element-specific moment precession during ferromagnetic resonance(FMR)at 2 GHz in a single Ni81Fe19layer.

关键词： Ferromagnetic resonance Time resolution Pump-probe Synchrotron radiation

Plasma-based X-ray laser speckle and its application on ferroelectric material

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Nuclear Science and Techniques 2005年第4期16卷 193-200页

作者： tai Ren-zhong NAMIKAWA Kazumichi Shanghai Institute of Applied Physics the Chinese Academy of Sicenees Shanghai 201800 China Department of Physics Tokyo Gakugei University. 4-1-1 Nukui-Kita Machi Koganei-Shi Tokyo 184-8501 Japan

A new type of soft X-ray source, i.e. a plasma-based X-ray laser, is found to be promising to conduct transient measurement. By means of picosecond X-ray laser speckles, the dynamic microscopic polarization clusters within cubic (paraelectric) BaTiO3 was directly observed and characterized in a microscopic scale for the first time. This opens a way to study this type of clusters, which usually manifest large external-field response for ferroelectric materials.

关键词： X射线激光铁电物质 BaTiO3

PRODUCT GENE REPRESENTATION AND ACQUISITION METHOD BASED ON POPULATION OF PRODUCT CASES

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Chinese Journal of Mechanical Engineering 2007年第6期20卷 114-119页

作者： tai Ligang zhong Tingxiu MIAOzhonghua CUI Qifeng School of Mechanical Engineering Shanghai Jiaotong University Shanghai 200030 China

The representation and acquisition of a product gene is a crucial problem in product evolutionary design. A new methodology of product gene representation and acquisition from a population of product cases is proposed, and the methodology for product evolutionary design based on a population of product cases is realized. By properly classifying product cases according to its product species, the populations of product cases are divided and a model is established. Knowledge of the scheme design is extracted and formulated as the function base, principle base, and structure base, which are then combined to form a product gene. Subsequently, the product gene tree is created and represented by object-oriented method. Then combining this method with the evolutionary reasoning technology, an intelligent and automatic evolutionary scheme design of product based on the population of product cases is realized. This design method will be helpful in the processing of knowledge formulation, accumulation, and reuse, and in addressing the difficulty of acquiring design knowledge in traditional design. In addition, the disadvantages of manual case adaptation and update in case-based reasoning can be eliminated. Moreover, by optimizing the design scheme in multiple levels and aspects of product function, principle, and structure etc., the level of creativity in the scheme design can be improved.

关键词： Population of product cases Productgene Evolutionary design

Latest developments in EUV photoresist evaluation capability at Shanghai Synchrotron Radiation Facility

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Nuclear Science and Techniques 2023年第12期34卷 206-215页

作者： Zhen‑Jiang Li Cheng‑Hang Qi Bei‑Ning Li Shu‑Min Yang Jun Zhao Zhi‑Di Lei Shi‑Jie Zhu Hao Shi Lu Wang Yan‑Qing Wu Ren‑zhong tai Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Shanghai Synchrotron Radiation Facility Shanghai 201204China ShanghaiTech University Shanghai 201210China Key Laboratory of Materials for High Power Lasers Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China College of Materials Science and Opto‑Electronic Technology University of Chinese Academy of SciencesBeijing 100083China Shanghai University Shanghai 200444China

Evaluating the comprehensive characteristics of extreme ultraviolet(EUV)photoresists is crucial for their application in EUV lithography,a key process in modern technology.This paper highlights the capabilities of the Shanghai Synchrotron Radiation Facility(SSRF)08U1B beamline in advancing this field.Specifically,it demonstrates how this beamline can create fringe patterns with a 15-nm half-pitch on a resist using synchrotron-based EUV lithography.This achievement is vital for evaluating EUV photoresists at the advanced 5-nm node.We provide a detailed introduction to the methods and experimental setup used at the SSRF 08U1B beamline to assess an EUV photoresist.A significant part of this research involved the fabrication of high-resolution hydrogen silsesquioxane mask gratings.These gratings,with an aspect ratio of approximately 3,were created using electron beam lithography on an innovative mask framework.This framework was crucial in eliminating the impact of zeroth-order light on interference patterns.The proposed framework propose offers a new approach to mask fabrication,particularly beneficial for achromatic Talbot lithography and multicoherent-beam interference applications.

关键词： Extreme ultraviolet photoresist Interference lithography High-resolution Electron beam lithography·Hydrogen silsesquioxane Grating

Improving the assessment method of seed vigor in Cunninghamia lanceolata and Pinus massoniana based on oxygen sensing technology

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Journal of Forestry Research 2012年第1期23卷 95-101页

作者： ZHAO Guang-wu · zhong tai-lin College of Agriculture and Food Science Zhejiang Agriculture andForestry University Lin'an 311300 People's Republic of China

Oxygen sensing technology was employed to study the rapid methods for seed vigor assessment of Chinese fir （Cunninghamia lanceolata） and Masson pine （Pinus massoniana）. Firstly, seeds of five lots were performed using accelerated aging （AA） into three vigor levels. Then, four oxygen sensing indices, including increased metabolism time （IMT）, oxygen metabolism rate （OMR）, critical oxygen pressure （COP）, relative germination time （RGT） and the control indiees such as labora- tory germination indices, dehydrogenase activity （DA）, and electrical conductivity （EC） were analyzed by the tests of 15 samples. The results of correlation analysis between these indices and field emergence per- formances based on two-year and two-spot data showed that RGT and OMR should be indicated as the optimal oxygen sensing indices to rap- idly and automatically evaluate seed vigor of Chinese fir and Masson pine, respectively. On the basis, one-variable linear regression equations were built to forecast their field emergence performances by the two oxygen sensing indices.

关键词： Cunninghamia lanceolata Pinus massoniana seed vigor oxygen sensing