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Acta Mechanica Sinica 2013年第3期29卷 348-356页

作者： Bo Lu Yi-Cheng Song Zhan-sheng Guo Jun-qian zhang Shanghai Institute of Applied Mathematics and Mechanics Shanghai University Department of Mechanics Shanghai University Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai University

Progressive delamination driven by Li-ion diffusion in elastic disk-like thin film electrodes of Li-ion batteries is modeled based on the cohesive model. Axisymmetric diffusion model is considered under both galvanostatic and potentiostatic operations. The effect of edge diffusion on the delamination process is evaluated. It is found that the diffusion from edge leads to an earlier delamination initiation. The edge effect is significant for active disks with a small aspect ratio, but negligible for the case of large aspect ratio. The edge diffusion is weaker in the potentiostatic operation than in the galvanostatic operation.

关键词： Lithium-ion battery · Thin film electrode · De-lamination · Diffusion

The complex momentum representation approach and its application to low‑lying resonances in 17 O and^(29,31)F

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Nuclear Science and Techniques 2023年第1期34卷 43-50页

作者： Si‑Zhe Xu Shi‑sheng zhang Xiao‑qian Jiang Michael Scott Smith School of Physics Beihang UniversityBeijing 100191China Physics Division Oak Ridge National LaboratoryOak RidgeTN 37831‑6354USA

Approaches for predicting low-lying resonances,uniformly treating bound,and resonant levels have been a long-standing goal in nuclear ***,we explored the viability of the complex momentum representation(CMR)approach coupled with new *** focus on predicting the energy of the low-lying 2p_(3∕2)resonance in 17 O,which is critical for s-process nucleosynthesis and missing in previous theoretical *** a Woods-Saxon potential based on the Koning-Delaroche optical model and constrained by the experimental one-neutron separation energy,we successfully predicted the resonant energy of this level for the first *** predictions of the bound levels and 1d_(3∕2)resonance agree well with the measurement ***,we utilize this approach to study the near-threshold resonances that play a role when forming a two-neutron halo in^(29,31)*** found that the CMR-based predictions of the bound-level energies and unbound 1f7∕2 level agree well with the results obtained using the scattering phase shift ***,we successfully found a solution for the 2p_(3∕2)resonance with energy just above the threshold,which is decisive for halo formation.

关键词： Neutron capture Low-lying resonance Complex momentum representation Resonance energy

Sustainable engineering of TiO_(2)-based advanced oxidation technologies:From photocatalyst to application devices

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Journal of Materials Science & Technology 2021年第19期78卷 202-222页

作者： Meng Zu Xiaosong Zhou shengsen zhang Shangshu qian Dong-sheng Li Xianhu Liu Shanqing zhang College of Chemistry and Chemical Engineering Lingnan Normal UniversityZhanjiangGuangdong524048China Centre for Clean Environment and Energy and Griffith School of Environment Griffith UniversityGold CoastQLD4222Australia College of Materials and Energy South China Agricultural UniversityGuangzhou510643China College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges University.Yichang443002China Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhou450002China

In recent years,photocatalysis(PC)and photoelectrocatalysis(PEC)technologies have shown great promise as low-cost,environmentally friendly,and sustainable strategies in addressing the issues of energy shortages and environmental pollution,which has become a research *** dioxide(TiO_(2))-based PC and PEC are the most promising sustainable technologies for advanced oxidation *** to its inherent characteristics,including high oxidation ability,low price,and stability,TiO_(2)photocatalyst has been widely studied and used in different scales for numerous *** practical applications in these areas,the engineering of the photocatalysts and the design of the PC and PEC devices must be both environmentally and economically *** the one hand,for the engineering of the photocatalysts,the photocatalyst shall be able to deliver the following characteristics,including large specific surface area,high absorption of light,rapid and low-cost separation and regeneration,and high *** the other hand,the design of the PC and PEC devices shall facilitate high in energy utilization and catalytic efficiency,and low in building and operational *** work covers the reaction mechanism of TiO_(2)-based PC and PEC technologies,sustainable design,and preparation of TiO_(2)photocatalysts as well as sustainable design in PC and PEC devices for wastewater treatment,sensing,and water ***,we provide some critical perspectives on the future development of TiO_(2)-based PC and PEC technology.

关键词： Photocatalysis Photoelectrocatalysis TiO_(2) Bandgap Morphology engineering Sustainable design

New CCD photometric investigation of the early-type overcontact binary BH Cen in the young star-forming Galactic cluster IC 2944

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Research in Astronomy and Astrophysics 2018年第5期18卷 119-130页

作者： Er-Gang Zhao sheng-Bang qian Miloslav Zejda Bin zhang Jia zhang Yunnan Observatories Chinese Academy of Sciences Kunming 650216 China Key Laboratory of the Structure and Evolution of Celestial Objects Chinese Academy of Sciences Kunming 650216 China Center for Astronomical Mega-Science Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China Department of Theoretical Physics and Astrophysics Masaryk University Brno Czech Republic

BH Cen is a short-period early-type binary with a period of 0.792^d in the extremely young star-forming cluster IC 2944. New multi-color CCD photometric light curves in U, B, V, R and I bands are presented and are analyzed by using the Wilson-Devinney code. It is detected that BH Cen is a high-mass-ratio overcontact binary with a fill-out factor of 46.4% and a mass ratio of 0.89. The derived orbital inclination i is 88.9 degrees, indicating that it is a totally eclipsing binary and the photometric parameters can be determined reliably. By adding new eclipse times, the orbital period changes in the binary are analyzed. It is confirmed that the period of BH Cen shows a long-term increase while it undergoes a cyclic oscillation with an amplitude of A3 = 0.024 d and a period of P3 = 50.3 yr. The high mass ratio, overcontact configuration and long-term continuous increase in the orbital period all suggest that BH Cen is in the evolutionary state after the shortest-period stage of Case A mass *** continuous increase in period can be explained by mass transfer from the secondary component to the primary one at a rate of˙M2 = 2.8×10^-6 M⊙per year. The cyclic change can be plausibly explained by the presence of a third body because both components in the BH Cen system are early-type stars. Its mass is determined to be no less than 2.2 M⊙ at an orbital separation of about 32.5 AU. Since no third light was found during the photometric solution, it is possible that the third body may be a candidate for a compact object.

关键词： binary (including multiple) close - stars binaries eclipsing - stars early-type - stars evolution - stars individual (BH Cen)

Enhanced Synchronization of Intercellular Calcium Oscillations by Noise Contaminated Signals

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Communications in Theoretical Physics 2008年第10期50卷 903-906页

作者： zhang Ji-qian CHEN Han-Shuang WANG Mao-sheng College of Physics and Electronic Information Anhui Normal University Wuhu 241000 China

We consider the dynamics of locally coupled calcium oscillation systems,each cell is subjected to extracel-lular contaminated signal,which contains common sub-threshold signal and independent Gaussian *** is found thatintermediate noise can enhance synchronized oscillations of calcium ions,where the frequency of noise-induced oscilla-tions is matched with the one of sub-threshold external *** show that synchronization is enhanced as a result ofthe entrainment of external signal Furthermore,the effect of coupling strength is *** find above-mentionedphenomenon exists only when coupling strength is very *** findings may exhibit that noise can enhance thedetection of feeble external signal through the mechanism of synchronization of intercellular calcium ions.

关键词： synchronization noise coupled oscillators random processes

The distribution of the periodic orbits with open deviation in C^(1+α)non-uniformly hyperbolic systems

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Science China Mathematics 2016年第1期59卷 161-168页

作者： qian sheng College of Science North China University of Technology

Let f ： M → M be a C^1＋α diffeomorphism on a smooth compact Riemannian manifold M and A be a Pesin set associated with the ergodic hyperbolic measure μ. Then f ： A → A forms a non-uniformly hyperbolic system. We concern with the distribution of the periodic orbits whose time averages are apart from the space average of μ. Finally, we derive a large deviation result for these periodic orbits with open deviation property.

关键词： specification open deviation non-uniformly hyperbolic

Synthesis and Optoelectronic Properties of Donor-acceptor Molecules Containing Pyromellitic Diimide Chromophore

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Chemical Research in Chinese Universities 2013年第6期29卷 1083-1088页

作者： zhang qian LU Xue-feng WANG Zhong-sheng ZHOU Gang Laboratory of Advanced Materials Department of ChemistryFudan University Shanghai 200438 P.R.China

Three donor-acceptor molecules containing pyromellitic diimide chromophore were designed and synthe- sized. The synthetic route towards the target compounds was systematically investigated and discussed in detail. The resulted organic semiconductors have shown promising optoelectronic properties as further revealed by UV-Vis ab- sorption spectroscopy, cyclic voltammetry, and theoretic calculation.

关键词： Pyromellitic diimide Donor-acceptor Charge transfer

FHL2 deficiency aggravates Candida albicans infection through decreased myelopoiesis

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Science China Life Sciences 2025年

作者： Rongmei Gao Kanchao Chen Yimin Wang Rongxia Guo Xiaoyu zhang Peng Wu Weili Wang Qingxiang Huang Xuemei Xie Shangda Yang Yanling Lü qian Ren Fei Liu Song Chen Fengxia Ma Tao Cheng Hui Cheng State Key Laboratory of Experimental Hematology National Clinical Research Center for Blood Diseases Haihe Laboratory of Cell Ecosystem Institute of Hematology & Blood Diseases Hospital Chinese Academy of Medical Sciences & Peking Union Medical College CAMS Center for Stem Cell Medicine PUMC Department of Stem Cell and Regenerative Medicine

Hematopoiesis is a finely tuned process that generates all blood cell types through self-renewal and differentiation, which is crucial for maintaining homeostasis. Acute infections can prompt a hematopoietic response known as emergency myelopoiesis. In this study, using a Candida albicans (C. albicans) infection model, we demonstrated for the first time that disruption of Fhl2 led to increased fungal burden,heightened inflammatory response and reduced survival rates. Impaired myeloid hematopoiesis and immune cell production were evident, as proved by the decreased numbers of hematopoietic stem and progenitor cells (HSPCs) and granulocytes in the bone marrow of Fhl2-deficient mice. In conclusion, FHL2 regulated emergency myelopoiesis in response to C. albicans, affecting the host’s defense against pathogens.

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Mn基低温脱硝催化剂性能优化研究进展

工程科学学报 2025年第1期47卷 142-157页

作者：许芸邬博宇庄柯张乾徐静馨张深根朱法华张柏林国家能源集团科学技术研究院有限公司低碳智能燃煤发电与超净排放全国重点实验室南京210023 北京科技大学新材料技术研究院北京100083

氮氧化物(NO_(x))是我国首要大气污染物,主要采用选择性催化还原(SCR)技术进行排放控制.研发高效、稳定的低温脱硝催化剂可避免高能耗的烟气再热,具有显著的节能降碳效益.锰氧化物(MnO_(x))因多变的化学态和丰富的晶格缺陷而表现出优良... 详细信息

氮氧化物(NO_(x))是我国首要大气污染物,主要采用选择性催化还原(SCR)技术进行排放控制.研发高效、稳定的低温脱硝催化剂可避免高能耗的烟气再热,具有显著的节能降碳效益.锰氧化物(MnO_(x))因多变的化学态和丰富的晶格缺陷而表现出优良的氧化还原性能,并具有极强的表面酸性,在催化还原NO_(x)反应中表现出良好的低温活性,但N_(2)选择性低、抗H_(2)O/SO_(2)性能差,难以实现长期的高效稳定脱硝.近年来,改性提升Mn基催化剂的研究十分广泛,加快了Mn基催化剂工业应用的步伐.本文从低温活性、N_(2)选择性和稳定性三个方面,总结了Mn基催化剂的脱硝反应机理、元素掺杂改性、催化剂结构设计等最新研究进展,指出了当前的研究重点和难点,可为下一步研究提供参考.

关键词：氮氧化物选择性催化还原锰基催化剂 N2选择性稳定性元素掺杂

An AND-type 1T-FeFET array with robust write and read operations

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Science China(Information Sciences) 2025年

作者： Jiacheng XU Jiayi ZHAO Hongrui zhang Haoji qian Jiani GU Bowen CHEN Gaobo LIN Rongzong SHEN Xinda SONG Huan LIU Yian DING Minglei MA Miaomiao zhang Xiao YU Bing CHEN Ran CHENG Gaobo XU Huaxiang YIN Yan LIU Jiajia CHEN Chengji JIN Genquan HAN Hangzhou Institute of Technology and School of Microelectronics Xidian University Zhejiang Lab College of Integrated Circuits Zhejiang University Key Laboratory of Microelectronics Devices and Integrated Technology Institute of MicroelectronicsChinese Academy of Sciences

HfO2-based ferroelectric field-effect transistor （FeF ET） has become a promising solution for next-generation embedded non-volatile memory （NVM） owing to its complementary metal-oxide-semiconductor （CMOS） compatibility,small footprint, high performance, and non-destructive readout [1]. Recent research of HfO2-based FeF ET has focused on the device operation mechanisms as well as reliability issues such as the interplay between polarization switching and charge trapping/detrapping [2], read-after-write latency [3] and endurance degradation [4]. It has been demonstrated that endurance higher than 1010cycles with negligible read-after-write latency is possible if the gate stack of FeF ET is well engineered [5].

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