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Nuclear Science and Techniques 2016年第4期27卷 115-119页

作者： Yi-Wen Li feng-gang bian Jie Wang Shanghai Institute of Applied Physics Chinese Academy of Sciences Zhangjiang Campus Shanghai 201204 China University of Chinese Academy of Sciences Beijing 100049 China

In this paper, we present a novel design scheme of temperature-jump(T-jump) area for microfluidic *** simulation and experimental research of thermal characteristics of the solution in microchannels is *** simulation of the temperature-jump microchannel is analyzed to study the heat transfer characteristics by comparing performance of three proposed *** of the power requirement is discussed in the dimensional design of microheater. Temperature-sensitive fluorescent dye is applied to investigate the temperature field of microchannel heated by a designed microheater. It is found that the T-jump microfluidic device can provide rapid heating for solutions with strong convection heat transfer ability.

关键词：微流控芯片温升设计温度场 X射线散射同步辐射溶液微流体装置跳变

Extraction and structural investigation of jute cellulose nanofibers

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Nuclear Science and Techniques 2018年第7期29卷 209-216页

作者： Zhong-Xuan bian Xia-Ran Miao Jin-You Lin feng Tian feng-gang bian Hui Li School of Materials Science and Technology East China University of Science and Technology Shanghai Institute of Applied Physics Chinese Academy of Sciences

Cellulose nanofibrils(CNFs) are a type of natural nanomaterials extracted from plants and animals that have expanding applications in numerous areas benefiting from their inherent properties of renewability,biodegradability,and *** energy consumption reduction,CNFs were extracted from raw jute fibers,which were not pretreated in a hot alkali or acid solution,by TEMPOmediated *** radiation wide-angle scattering was performed to realize the crystallization of the CNF crystallites;Fourier transform infrared spectroscopy,transmission electron microscopy,and fieldemission scanning electron microscopy were used to characterize the changes in chemical groups and visualized morphology of *** simplified preparation and shortened cycle should further help the study of the structure–function relationship of jute CNFs subjected to chemical modification.

关键词：结构功能关系纤维素黄麻扫描电子显微镜 Fourier 抽取化学修正同步加速器

Relationship between Localization of PBSU in Interlamellar/Interfibrillar Regimes and Double Peaks in DSC/SAXS in its Blend with PVDF

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Chinese Journal of Polymer Science 2022年第6期40卷 631-641页

作者： Jia-Yao Wang Yong-Jin Li Ji-Chun You feng-gang bian 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 College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material TechnologyMinistry of EducationHangzhou Normal UniversityHangzhou 311121China

In this work,phase segregation and localization of PBSU have been investigated with the combination of SAXS and DSC in its blend with *** stepwise crystallization of PVDF and PBSU,there are double melting peaks of PBSU in DSC and double scattering peaks in *** has been demonstrated that double peaks can be attributed to the localization of PBSU in interlamellar/interfibrillar region in pre-formed PVDF crystal *** the case of low content of PBSU in blend,PBSU is trapped into the interlamellar region of PVDF crystals,resulting in the alternating lamellae crystal of them and the first peak(with low-q)in *** enhanced confinement effect produces thinner PBSU lamellae,corresponding to the lower melting temperature in *** increasing its content in blend,some PBSU segregates in interfibrillar regions in addition to the enrichment in interlamellar regions of PVDF crystal *** larger space and higher concentration of PBSU in interfibrillarregions contribute to periodic lamellae structure of PBSU with higher thickness,which is the reason for the second peak(with high-q)in SAXS and *** results not only clarify the relationship between localization of PBSU in interlamellar/interfibrillar regions and double peaks in DSC/SAXS,but also provide a novel strategy to detect the interlamellar and interfibrillar segregation of low-T_(m) component in miscible crystalline/crystalline blend.

关键词： Phase segregation Localization Double peaks DSC/SAXS

BL19U2:Small-angle X-ray scattering beamline for biological macromolecules in solution at SSRF

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Nuclear Science and Techniques 2020年第12期31卷 32-40页

作者： Yi-Wen Li Guang-feng Liu Hong-Jin Wu Ping Zhou Chun-Xia Hong Na Li feng-gang bian Shanghai Advanced Research Institute(Zhangjiang Laboratory) Chinese Academy of SciencesShanghai 201204China CAS Key Laboratory of Molecular Virology and Immunology Institute Pasteur of ShanghaiChinese Academy of SciencesShanghai 200031China University of Chinese Academy of Sciences Beijing 100049China

The BL19U2 at the Shanghai Synchrotron Radiation Facility is a small-angle X-ray scattering beamline dedicated to structural studies pertaining to biological macromolecules in *** beamline has been officially opened to users in March 2015,and since then,a series of technological innovations has been developed to optimize beamline performance,thereby significantly improving the data collection efficiency and broadening the application scope of biological small-angle X-ray ***19U2 is ideal for the high-throughput screening of weakly scattered proteins,protein assemblies,nucleic acids,inorganic nanomaterials,and organic drug *** paper describes the design and overview of the BL19U2 *** sample environments at the experimental station and some recent scientific highlights are presented.

关键词： Shanghai synchrotron radiation facility Biological small-angle X-ray scattering High-throughput screening Biological macromolecules

FEA-based structural optimization design of a side cooling collimating mirror at SSRF

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Nuclear Science and Techniques 2017年第11期28卷 198-203页

作者： Li-Min Jin Na-Xiu Wang Wan-Qian Zhu feng-gang bian Zhong-Min Xu Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201204 China

Based on finite element analysis of thermal mechanical behavior, structural optimization design was proposed for a side cooling collimating mirror subjected to high heat load for a beamline at SSRF(Shanghai Synchrotron Radiation Facility). The temperature distribution,stress concentration effect, maximum equivalent(vonMises) stress, and slope error of the mirror were *** particular, the cooling water channels of the traditional structural design were optimized, and the modified designs were further optimized. Although the traditional structural and the improved designs could meet requirements for the temperature and thermal stress, the deformation gradients were relatively large for several structural designs, and this led to larger slope error. The further improved structural designs could be of better performance.

关键词： Finite element analysis (FEA) Synchrotron radiation Heat load Structural optimization

Directed Self-assembly of Vertical PS-b-PMMA Nanodomains Grown on Multilayered Polyelectrolyte Films

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Chinese Journal of Polymer Science 2020年第1期38卷 92-99,I0008页

作者： Kai Liu Chun-Ming Yang Bo-Ming Yang Lan Zhang Wen-Chao Huang Xiao-Ping Ouyang Fu-gang Qi Nie Zhao feng-gang bian College of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai201204China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai201204China

Layer-by-layer polyelectrolyte self-assembly, a common method for preparing high-quality ultra-thin films, was employed to direct the self-assembly behavior of polystyrene-block-poly(methyl methacrylate)(PS-b-PMMA) block copolymer for the first time. Differing from the previous neutral polymer brushes anchored to silicon substrates via chemical modification, polyelectrolyte multilayers(PEMs) were anchored by electrostatic interaction and provided a stable, smooth, and neutral interface. In the present study, PS-b-PMMA was deposited on poly(acrylamide hydrochloride)/poly(acrylic acid)(PAH/PAA) PEMs prepared by layer-by-layer self-assembly to successfully yield vertical nanodomains after thermal annealing. Seven layered PEMs revealed an excellent, smooth surface, with a low roughness of 0.6 nm. The periodic structure with interlamellar spacing of 47 nm was determined by grazing-incidence small-angle X-ray scattering(GISAXS). The morphology of the PS-b-PMMA nanodomains depended on the polyanion-to-polycation concentration ratio, which is related to the interaction between the block copolymer and the substrate. Our results demonstrate that layer-by-layer self-assembly is a helpful method for the phase separation of block polymers and the fabrication of vertical, ordered nanodomains.

关键词： Block copolymer Polyelectrolyte Self-assembly GISAXS

In situ studies on the positive and negative effects of 1,8-diiodoctane on the device performance and morphology evolution of organic solar cells

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Nuclear Science and Techniques 2021年第6期32卷 23-35页

作者： Da Huang Chun-Xia Hong Jian-Hua Han Nie Zhao Xiu-Hong Li Xi-Chang Bao feng-gang bian Yu-Ying Huang Chun-Ming Yang Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China CAS Key Laboratory of Bio-Based Materials Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China University of Chinese Academy of Sciences Beijing 100049China Functional Laboratory of Solar Energy Shandong Energy InstituteQingdao 266101China College of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China

The introduction of solvent additives is one of the most common approaches for enhancing the power conversion efficiency of organic solar cells(OSCs).However,the use of solvent additives has some negative effects,and an understanding of how solvent additives affect OSCs is currently *** this study,we developed an in situ grazing incidence wide-angle X-ray scattering(GIWAXS)technique in the SAXS beamline(BL16 B1)at the Shanghai Synchrotron Radiation Facility,and the additive effects of1,8-diiodoctane(DIO)on the performance and morphology evolution of the PTB7-Th/PC71 BM device was investigated in *** results revealed that the crystal size increased with the volume ratio of DIO,and a drastic evolution of lattice space and crystal coherence length was observed during thermal annealing for the first time,to our *** discrete PC71BM molecules dissolved by DIO have an effect similar to that of the nucleating agent for PTB7-Th,boosting the crystallization of PTB7-Th,reducing phase separation,and inducing more drastic morphological evolution during thermal *** results provide a deep perspective for the mechanism of solvent additives,while also showing the significance and feasibility of the in situ GIWAXS technique we developed at BL16 B1.

关键词： Grazing incidence wide-angle X-ray scattering Grazing incidence small-angle X-ray scattering Organic solar cells Solvent additive Thermal stability

Cohort study on the treatment of BRAF V600E mutant metastatic colorectal cancer with integrated Chinese and western medicine

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World Journal of Clinical Oncology 2025年第1期16卷 25-33页

作者： Jiang-Yu bian Yu-Fang feng Wen-Ting He Tong Zhang Department of Oncology Xiyuan Hospital of China Academy of Chinese Medical SciencesBeijing 100091China Department of Oncology The Fourth Clinical Medical College of Xinjiang Medical UniversityUrumqi 830001China Department of Oncology Traditional Chinese Medicine Hospital Affiliated to Xinjiang Medical UniversityUrumqi 830001China

BACKGROUND Patients with BRAF V600E mutant metastatic colorectal cancer(mCRC)have a low incidence rate,poor biological activity,suboptimal response to conventional treatments,and a poor *** the previous cohort study on mCRC conducted by our team,it was observed that integrated Chinese and Western medicine treatment could significantly prolong the overall survival(OS)of patients with colorectal ***,we further explored the survival benefits in the population with BRAF V600E mutant *** To evaluate the efficacy of integrated Chinese and Western medicine in the treatment of BRAF V600E mutant metastatic colorectal *** A cohort study was conducted on patients with BRAF V600E mutant metastatic colorectal cancer admitted to Xiyuan Hospital of China Academy of Chinese Medical Sciences and Traditional Chinese Medicine Hospital of Xinjiang Uygur Autonomous Region from January 2016 to December *** patients were divided into two *** A total of 34 cases were included,with 23 in Chinese-Western medicine cohort(cohort A)and 11 in Western medicine cohort(cohort B).The median overall survival was 19.9 months in cohort A and 14.2 months in cohort B,with a statistically significant difference(P=0.038,hazard ratio=0.46).The 1-3-year survival rates were 95.65%(22/23),39.13%(9/23),and 26.09%(6/23)in cohort A,and 63.64%(7/11),18.18%(2/11),and 9.09%(1/11)in cohort B,*** analysis showed statistically significant differences in median OS between the two cohorts in the right colon,liver metastasis,chemotherapy,and first-line treatment subgroups(P<0.05).CONCLUSION Integrated Chinese and Western medicine can prolong the survival and reduce the risk of death in patients with BRAF V600E mutant metastatic colorectal cancer,with more pronounced benefits observed in patients with right colon involvement,liver metastasis,combined chemotherapy,and first-line treatment.

关键词： Metastatic colorectal cancer BRAF V600E mutation Integrated Chinese and Western medicine Cohort study

采用同步辐射小角X射线散射技术研究Al−Mg−Si合金的析出强化行为

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Transactions of Nonferrous Metals Society of China 2023年第5期33卷 1305-1317页

作者：刘涛胡光敏王玉杰曾建荣东青边风刚曹召鹏孟楠张佼孙宝德上海交通大学材料科学与工程学院上海市先进高温材料与精密成形重点实验室上海200240 中国科学院上海高等研究院上海201204 中国科学院上海应用物理研究所上海201800 上海交通大学金属基复合材料国家重点实验室上海200240 上海交通大学先进船舶与深海探测协同创新中心上海200240

研究Al−Mg−Si合金在等温时效过程中的析出强化行为及其对力学性能的影响。利用原位同步辐射小角X射线散射(SAXS)技术和透射电子显微镜(TEM)对纳米析出相及其结构参数(尺寸、体积分数和数密度)进行表征。结果表明,棒状β''析出相优先沿... 详细信息

研究Al−Mg−Si合金在等温时效过程中的析出强化行为及其对力学性能的影响。利用原位同步辐射小角X射线散射(SAXS)技术和透射电子显微镜(TEM)对纳米析出相及其结构参数(尺寸、体积分数和数密度)进行表征。结果表明,棒状β''析出相优先沿其纵向尺寸生长,但径向尺寸在时效5 h后达到峰值。如预测与测量的屈服强度和硬度结果所示,纳米析出相的尺寸和体积分数的增大与析出强化定量相关。SAXS为Ashby−Orowan模型提供了更可靠的输入参数,这有助于提高模型的预测精度和泛化能力。研究表明,随着时效时间的延长,Al−Mg−Si合金预测力学性能的演变与β''析出相的平均半径和体积分数有关。

关键词：析出行为 Al−Mg−Si合金小角X射线散射力学性能

Experimental demonstration of D-band signals wireless transmission over 30 km

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Science China Technological Sciences 2025年

作者： Yi WEI Xiongwei YANG Jianjun YU Xianming ZHAO Mingxu WANG Jingwen TAN Weiping LI feng ZHAO Chengzhen bian Hansong MA Qinyi ZHANG Qiutong ZHANG Bing ZHANG Wen ZHOU Kaihui WANG Sicong XU Jianguo YU State Key Laboratory of ASIC and System Key Laboratory for Information Science of Electromagnetic Waves (MoE)and School of Information Science and Technology Fudan University Harbin Institute of Technology School of Automation Xi'an University of Posts and Telecommunications School of Electronic Engineering Beijing University of Posts and Telecommunications

Due to the rise of innovative technologies like artificial intelligence(AI),the Internet of Things(IoT), and telemedicine, the demand for internet traffic is rapidly increasing. In order to achieve ultra-high-speed wireless communication, many researchers are directing their efforts towards the Dband. The D-band, spanning the frequency band 110–170 GHz, has abundant spectrum resources and license-free characteristics [1,2].

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