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Influence of thickness on current-induced magnetization switching in𝐿L1_(0)-FePt single layer

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Chinese Physics B 2021年第10期30卷 500-505页

作者： shi-qi zheng Kang-Kang Meng Zhen-Guo Fu Ji-Kun Chen Jun Miao Xiao-Guang Xu Yong Jiang School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Institute of Applied Physics and Computational Mathematics Beijing 100083China

The thickness dependent spin-orbit torque(SOT)in an L1_(0)-FePt single layer is investigated in this *** the thickness increases from 8 nm to 16 nm,the magnetization switching ratio in the L1_(0)-FePt film with higher chemical ordering becomes *** is noted that compared with 3-nm-thick L1_(0)-FePt film,8-nm-thick L1_(0)-FePt film can switch much magnetization with the increase of chemical *** the FePt film is thick enough,the SOT in FePt is closely related to the L10-ordered structure,which indicates a bulk ***,the disordering plays an important role in the magnetization switching only for the ultra-thin FePt films,while the structural gradient may play an important role for thicker ***,both of the two mechanisms cannot fully explain the process of magnetization switching and the spin current *** many factors influence SOT,here in this work we emphasize only the bulk nature of strong SOC in L1_(0)-FePt through density functional theory calculations,which should generate large spin current due to spin Hall effect.

关键词： spin-orbit coupling magnetic anisotropy spin transport effects

Accelerating Life Test Scheme and Modeling Method for Machinegun

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Journal of Mathematics and System Science 2015年第6期5卷 262-268页

作者： Yong-Hai SHAN Xian-Ming GAO shi-qi SHAN zheng-Gang NIE Baicheng Ordnance Test Center Baicheng 13 7001 Jilin China

There is a pressing need for improving the current whole life shooting method in order to reduce ammunition consumption in the firearms lifetime test. The influencing factors, the characterization parameters and the correlation analysis result of lifetime were considered. Accelerating life test and measuring scheme for machinegun were designed systematically by applying such theoretical methods as accelerating test, uniform design and lifetime model. As result, it provides a more scientific and reasonable accelerating life test scheme and proposes methods on modeling lifetime, optimizing model and characterizing lifetime. The conclusion can be used in preparing accelerating life test scheme and lifetime model for machinegun.

关键词： Machinegun barrel lifetime design test model

Single-cell technologies: current and near future

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Science China Life Sciences 2025年第1期68卷 1-4页

作者： Chenfei Wang qi Liu Xiaohui Fan Tieliu shi Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration Ministry of EducationOrthopedics DepartmentTongji HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Frontier Science Center for Stem Cells School of Life Sciences and TechnologyTongji University Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine Shanghai East HospitalBioinformatics DepartmentSchool of Life Sciences and TechnologyTongji University Research Institute of Intelligent Computing Zhejiang Lab Pharmaceutical Informatics Institute College of Pharmaceutical SciencesZhejiang University National Key Laboratory of Chinese Medicine Modernization Innovation Center of Yangtze River DeltaZhejiang University Center for Bioinformatics and Computational Biology Shanghai Key Laboratory of Regulatory Biologythe Institute of Biomedical Sciences and School of Life SciencesEast China Normal University Key Laboratory of Advanced Theory and Application in Statistics and Data Science (MOE) School of StatisticsEast China Normal University

Single-cell technologies enable the indepth exploration of multiple biological hierarchies at the scale of individual cells,which have deepened our knowledge of cellular diversity, tissue organization, and overall organism function(Sun et al.,2024). In 2009, single-cell RNA sequencing(sc RNA-seq) was first developed as a powerful tool to dissect gene expression and uncover transcriptional *** the rapid advancement of technology, single-cell approaches have expanded to encompass other omics, such as genomics, epigenomics, proteomics,and metabolomics.

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耙吸船超高压冲水耙头集管数值模拟

水运工程 2019年第4期 15-20,37页

作者：石启正郑金龙中港疏浚有限公司上海200120

针对耙吸挖泥船耙头高压水箱最大承受压力为2. 2 MPa,而设计耙头高压冲水压力为38 MPa,需要重新对耙头集管进水方案进行设计,为研究高压冲水耙头高效冲刷泥沙提供机理研究。采用湍流模型中Realizable k-ε,用混合网格描述高压冲水状态,... 详细信息

针对耙吸挖泥船耙头高压水箱最大承受压力为2. 2 MPa,而设计耙头高压冲水压力为38 MPa,需要重新对耙头集管进水方案进行设计,为研究高压冲水耙头高效冲刷泥沙提供机理研究。采用湍流模型中Realizable k-ε,用混合网格描述高压冲水状态,建立3种不同进水方式的数值模型。结果表明:3个方案都满足喷嘴出口均分流量的效果,3个方案出口断面平均流速大致相同。但是方案2的出口断面流场差异性很大,集管各个出口断面流速呈现沿集管中心对称分布;方案3的弯管进水处流速变化大,很容易对弯管造成破坏。

关键词：耙吸挖泥船耙头集管超高压冲水数值模拟

Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong Wang Pengyang Wang Yali Liu Shanshan qi Biao shi Ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Perovskite solar cells

耙吸挖泥船环保溢流筒不同角度环保阀数值模拟

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水运工程 2020年第11期 181-185页

作者：石启正郑金龙中港疏浚有限公司上海200120

为了解环保溢流筒在实船上的应用效果及控制策略,结合耙吸挖泥船的实际泥舱尺寸,采用CFX中的均相流模型,对泥舱中环保溢流筒不同角度环保阀进行数值模拟,得到环保阀不同角度时溢流筒内的气体体积分数云图。结果表明:1)环保阀可以明显减... 详细信息

为了解环保溢流筒在实船上的应用效果及控制策略,结合耙吸挖泥船的实际泥舱尺寸,采用CFX中的均相流模型,对泥舱中环保溢流筒不同角度环保阀进行数值模拟,得到环保阀不同角度时溢流筒内的气体体积分数云图。结果表明:1)环保阀可以明显减少空气进入溢流筒,其中环保阀水平夹角为30°时显著减少环保溢流筒气体含量。2)入口位置及环保溢流筒工作状态也影响溢流液中气泡含量。

关键词：泥舱模型环保溢流筒环保阀气体体积分数

A matrix metalloproteinase-responsive hydrogel system controls angiogenic peptide release for repair of cerebral ischemia/reperfusion injury

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Neural Regeneration Research 2025年第2期20卷 503-517页

作者： qi Liu Jianye Xie Runxue Zhou Jin Deng Weihong Nie Shuwei Sun Haiping Wang Chunying shi Department of Human Anatomy Histology and EmbryologySchool of Basic MedicineQingdao UniversityQingdaoShandong ProvinceChina Department of Neurology The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina Department of General Practice The Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina

Vascular endothelial growth factor and its mimic peptide KLTWQELYQLKYKGI(QK)are widely used as the most potent angiogenic factors for the treatment of multiple ischemic ***,conventional topical drug delivery often results in a burst release of the drug,leading to transient retention(inefficacy)and undesirable diffusion(toxicity)in ***,a drug delivery system that responds to changes in the microenvironment of tissue regeneration and controls vascular endothelial growth factor release is crucial to improve the treatment of ischemic *** metalloproteinase-2(MMP-2)is gradually upregulated after cerebral ***,vascular endothelial growth factor mimic peptide QK was self-assembled with MMP-2-cleaved peptide PLGLAG(TIMP)and customizable peptide amphiphilic(PA)molecules to construct nanofiber hydrogel ***-TIMP-QK was found to control the delivery of QK by MMP-2 upregulation after cerebral ischemia/reperfusion and had a similar biological activity with vascular endothelial growth factor in *** results indicated that PA-TIMP-QK promoted neuronal survival,restored local blood circulation,reduced blood-brain barrier permeability,and restored motor *** findings suggest that the self-assembling nanofiber hydrogel PA-TIMP-QK may provide an intelligent drug delivery system that responds to the microenvironment and promotes regeneration and repair after cerebral ischemia/reperfusion injury.

关键词： angiogenesis biomaterial blood-brain barrier cerebral ischemia/reperfusion injury control release drug delivery inflammation QK peptides matrix metalloproteinase-2 neuroprotection self-assembling nanofiber hydrogel

g-C_(3)N_(4)nanosheets coupled with CoSe_(2)as co-catalyst for efficient photooxidation of xylose to xylonic acid

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Green Energy & Environment 2025年第1期10卷 231-238页

作者： qi Hao Yijun Liu Ren Zou Ge shi shilian Yang Linxin Zhonga Wu Yang Xiao Chi Yunpeng Liu shimelis Admassie Xinwen Peng State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou510641GuangdongChina Hainan Key Laboratory of Storage&Processing of Fruits and Vegetables Agricultural Products Processing Research InstituteChinese Academy of Tropical Agricultural SciencesZhanjiangGuangdong524001China Department of Chemistry and Centre for Advanced 2D Materials(CA2DM)National University of Singapore 3 Science Drive 3 Singapore117543Singapore School of Materials Science and Hydrogen Energy Foshan UniversityFoshan528231GuangdongChina Department of Chemistry Addis Ababa UniversityPO BOX 1176Addis AbabaEthiopia

Photocatalysis has emerged as an effective approach to sustainably convert biomass into value-added ***_(2)is a promising nonprecious,efficient cocatalyst for photooxidation,which can facilitate the separation of photogenerated electron–holes,increase the reaction rates,and enhance photocatalytic *** this work,we synthesized a stable and efficient photocatalysis system of CoSe_(2)/g-C_(3)N_(4)through attaching CoSe_(2)on g-C_(3)N_(4)sheets,with a yield of 50.12%for the selective photooxidation of xylose to xylonic *** light illumination,the photogenerated electrons were prone to migrating from g-C_(3)N_(4)to CoSe_(2)due to the higher work function of CoSe_(2),resulting in the accelerated separation of photogenerated electron–holes and the promoted ***,this study reveals the unique function of CoSe_(2),which can significantly promote oxygen adsorption,work as an electron sink and accelerate the generation of$O2-,thereby improving the selectivity toward xylonic acid over other *** work provides useful insights into the design of selective photocatalysts by engineering g-C_(3)N_(4)for biomass high-value utilization.

关键词： Biomass photooxidation Hemicelluloses Xylose g-C_(3)N_(4) Xylonic acid

High-temperature oxidation behavior and degradation mechanism of chromium-coated zirconium alloy cladding: a review

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Tungsten 2025年第1期7卷 50-70页

作者： Yi Li Bei-qi Wang Xin-Yin Zhang shi-Jie Wang Cong-Yi Li Hui-Long Yang Ran-Ran Su Tong Liu School of Mechanical Engineering Shanghai Jiao Tong University College and Graduate School of Arts and Sciences University of Virginia Global Institute of Future Technology Shanghai Jiao Tong University

Accident-tolerant fuels(ATF) have been extensively studied to reduce the production rate and total amount of heat and hydrogen generated from high-temperature steam oxidation during severe ***-coated zirconium alloy cladding has become one of the most promising candidates for ATF because of its excellent corrosion and oxidation *** paper provides a comprehensive overview of the research progress on oxidation behaviors and degradation mechanisms in chromium-coated zirconium alloy cladding under high-temperature *** techniques to strengthen the oxidation resistance are highlighted and ***,challenges and opportunities for various future directions are addressed.

关键词： Accident-tolerant fuel Chromium coating Degradation mechanism High-temperature oxidation behavior Zirconium alloy cladding