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Towards total protection from impact:a viability study using EPE foam to protect falling eggs

Transportation Safety and Environment 2019年第2期1卷 154-163页

作者： Gui-Rong Liu Guang Chen shu-yong duan Department of Aerospace Engineering and Engineering Mechanics University of Cincinnati2600 Clifton AveCincinnatiOhio45221 USA State Key Laboratory of Reliability and Intelligence of Electrical Equipment HeBei University of TechnologyTianjin City300401 China School of Mechanical Engineering HeBei University of TechnologyTianjin City300401 China

Total protection of fragile goods and equipment during transport has become critically important as fast delivery systems are growing rapidly due to the rise of mass online commerce *** paper therefore studies the protection of falling eggs—one of the most fragile goods—through *** experiments are first conducted to obtain the critical stress at which the eggshell is damaged by falling *** are first conducted of unpackaged eggs dropping onto a granite platform from various *** element method(FEM)models of unpackaged eggs are then built to simulate the behaviour of eggs and compute their stress *** experimental data is compared with the results of FEM simulations to determine the critical stress at which the eggshell is damaged.A series of tests and numerical simulations are then carried out for eggs wrapped in expanded polyethylene(EPE)*** stress distribution of both a single egg and multiple eggs in packaging are *** empirical formula between the drop speed(or height)and the bottom thickness of the EPE foam packaging is obtained,which can be useful in the design of packaging for the total protection of eggs that may fall during usual transport and delivery *** experimental and numerical results from this study show that it is viable to protect fragile goods,as long as the EPE form packaging has sufficient *** proposed study and design procedure are helpful for the selection of key parameters of foam packaging to protect fragile industry products from impact.

关键词： impact protection critical stress EPE foam packaging egg drop test FEM simulation

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Advances in genotypic antimicrobialresistance testing: a comprehensive review

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Science China Life Sciences 2025年第01期 130-143页

作者： Boheng duan Xianjun Zeng Junping Peng Huan Kui College of Nanchang University Department of Imaging The Second Affiliated Hospital of Nanchang University NHC Key Laboratory of Systems Biology of Pathogens National Institute of Pathogen BiologyChinese Academy of Medical Sciences & Peking Union Medical College Key Laboratory of Respiratory Disease Pathogenomics Chinese Academy of Medical Sciences & Peking Union Medical College Key Laboratory of Pathogen Infection Prevention and Control (Ministry of Education) State Key Laboratory of Respiratory Health and MultimorbidityNational Institute of Pathogen BiologyChinese Academy of Medical Sciences & Peking Union Medical College

Antimicrobial resistance(AMR) represents a substantial threat to global public health, complicating the treatment of common infections and leading to prolonged illness and escalated healthcare expenses. To effectively combat AMR, timely and accurate detection is crucial for AMR surveillance and individual-based therapy. Phenotypic antibiotic resistance testing(AST) has long been considered the gold standard in clinical applications, serving as the foundation for clinical AMR diagnosis and optimized therapy. It has significantly contributed to ensuring patients′ health and the development of novel antimicrobials. Despite advancements in automated culture-based AST technologies,inherent limitations impede the widespread use of phenotypic AST in AMR surveillance. Genotypic AST technologies offer a promising alternative option, exhibiting advantages of rapidity, high sensitivity, and specificity. With the continuous advancement and expanding applications of genotypic AST technologies, such as microfluidics, mass spectrometry, and high-resolution melting curve analysis, new vigor has been injected into the development and clinical implementation of genotypic AST technologies. In this narrative review, we discuss the principles, applications, and advancements of emerging genotypic AST methods in clinical settings. The comprehensive review aims to highlight the significant scientific potential of emerging genotypic AST technologies in clinical AMR diagnosis, providing insights to enhance existing methods and explore novel approaches.

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Microstructures and mechanical properties of a cast Al-Cu-Li alloy during heat treatment procedure

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Rare Metals 2021年第7期40卷 1897-1906页

作者： shu-Wei duan Kenji Matsuda Tao Wang yong Zou MOE Key Laboratory for Liquid-Solid Structure Evolution and Materials Processing Institute of Materials JoiningShandong UniversityJinan 250061China Department of Materials Science and Technology Faculty of EngineeringUniversity of ToyamaToyama 930-8555Japan

Al-Cu-Li alloy is a huge potential alloy for aerospace industry due to its low density and excellent comprehensive *** this study,the microstructures and mechanical properties of a novel cast Al-Cu-Li alloy during the heat treatment were *** showed that most of the secondary phases along grain boundaries in as-cast state were dissolved into the Al matrix after homogenization and solution treatment,while the Cu-rich phases were slightly segregated once again on grain boundaries after aging.A relatively good combination of strength and ductility(average ultimate tensile strength of 430 MPa and elongation of 8.9%)was obtained after natural *** electron microscopy(TEM)results revealed that there was a complicated precipitate distribution in this cast alloy after natural *** with the similar alloys which introduced dislocations before aging,the density of T1(Al_(2)CuLi)phases was decreased but the size was *** low volume fraction of d0 phase,medium density of needle-shaped precipitates and relativity narrow precipitates-free zone with varying widths near grain boundary are the reasons accounting for the improvement of performances.

关键词： Al-Cu-Li alloy Heat treatment Microstructure Mechanical property Precipitate

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Prediction of film ratings based on domain adaptive transfer learning

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High Technology Letters 2023年第1期29卷 98-104页

作者：舒展 duan yong School of Information Science and Engineering Shenyang University of TechnologyShenyang 110870P.R.China

This paper examines the prediction of film ***,in the data feature engineering,feature construction is performed based on the original features of the film ***,the clustering algorithm is utilized to remove singular film samples,and feature selections are carried *** solving the problem that film samples of the target domain are unlabelled,it is impossible to train a model and address the inconsistency in the feature dimension for film samples from the source ***,the domain adaptive transfer learning model combined with dimensionality reduction algorithms is adopted in this *** the same time,in order to reduce the prediction error of models,the stacking ensemble learning model for regression is also ***,through comparative experiments,the effectiveness of the proposed method is verified,which proves to be better predicting film ratings in the target domain.

关键词： prediction of film rating domain adaptive transfer component analysis(TCA) correlation alignment(CORAL) stacking

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Preparation and applications of calcium ferrite as a functional material:A review

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 292-310页

作者： Xiuli Han Bowen duan Lei Liu Shilong Fang Weiwei Wang College of Mining Engineering North China University of Science and TechnologyTangshan 063210China Collaborative Innovation Center of Green Development and Ecological Restoration of Mineral Resources of Hebei Province Tangshan 063210China Key Laboratory of Mining Development and Security Technology of Hebei Province Tangshan 063210China

Calcium ferrite(CF)is recognized as a potential green and efficient functional material because of its advantages of magnetism,electrochemistry,catalysis,and biocompatibility in the fields of materials chemistry,environmental engineering,and ***-fore,the obtained research results need to be systematically summarized,and new perspectives on CF and its composite materials need to be *** on the presented studies of CF and its composite materials,the types and structures of the crystal are *** addition,the current application technologies and theoretical mechanisms with various properties in different fields are ***,the various preparation methods of CF and its composite materials are elaborated in *** importantly,the advantages and disadvantages of the synthesis methods of CF and its composite materials are discussed,and the existing problems and emerging challenges in practical production are ***,the key future research directions of CF and its composite materials have been prospected from the potential application technologies to provide references for its synthesis and efficient utilization.

关键词： calcium ferrite mineral functional materials preparation application perspectives

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A melt-cast duan-Zhang-Kim mesoscopic reaction rate model and experiment for shock initiation of melt-cast explosives

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Defence Technology（防务技术） 2021年第5期17卷 1753-1763页

作者： shu-rui Li Zhuo-ping duan Lian-sheng Zhang Zhuo-cheng Ou Feng-lei Huang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

A melt-cast duan-Zhang-Kim(DZK)mesoscopic reaction rate model is developed for the shock initiation of melt-cast explosives based on the pore collapse hot-spot ignition mechanism.A series of shock initiation experiments was performed for the Comp B melt-cast explosive to estimate effects of the loading pressure and the particle size of granular explosive component,and the mesoscopic model is validated against the experimental *** numerical simulations indicate that the initial density and formula proportion greatly affect the hot-spot ignition of melt-cast explosives.

关键词： Melt-cast explosive Shock initiation Mesoscopic reaction rate model Hot-spot ignition Shock sensitivity

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A Review of REE Tracer Method Used in Soil Erosion Studies

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Agricultural Sciences in China 2010年第8期9卷 1167-1174页

作者： ZHU Ming-yong TAN shu-duan LIU Wen-zhi ZHANG Quan-fa Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden Chinese Academy of Sciences Wuhan 430074 P.R.China College of Bioscience and Biotechnology Hunan Agricultural University Changsha 410128 P.R. China Graduate University Chinese Academy of Sciences Beijing 100049 P.R. China

Rare earth elements （REEs） have been proved ideal tracers for soil erosion and aggregation. REE tracer method （REETM） used to study soil erosion, as a new technique, has been developed in recent 20 yr. It is able to quantitatively monitor the temporal and spatial variation of erosion intensity, compared with traditional approaches. The applications of REETM in studying of sediment differentiation law, erosion process evolution, determination of sediment sources and sedimentation investigations, and determination of prediction parameters, were reviewed. Some application limitations were summarized.

关键词： soil erosion rare earth element (REE) REE tracer method (REETM) research progress

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Peripheral mitochondrial DNA as a neuroinflammatory biomarker for major depressive disorder

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Neural Regeneration Research 2025年第6期20卷 1541-1554页

作者： Jinmei Ye Cong duan Jiaxin Han Jinrong Chen Ning Sun Yuan Li Tifei Yuan Daihui Peng Division of Mood Disorder Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry First Hospital of Shanxi Medical UniversityTaiyuanShanxi ProvinceChina Shanghai Key Laboratory of Psychotic Disorders Brain Health InstituteNational Center for Mental DisordersShanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Co-Innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina

In the pathogenesis of major depressive disorder, chronic stress-related neuroinflammation hinders favorable prognosis and antidepressant response. Mitochondrial DNA may be an inflammatory trigger, after its release from stress-induced dysfunctional central nervous system mitochondria into peripheral circulation. This evidence supports the potential use of peripheral mitochondrial DNA as a neuroinflammatory biomarker for the diagnosis and treatment of major depressive disorder. Herein, we critically review the neuroinflammation theory in major depressive disorder, providing compelling evidence that mitochondrial DNA release acts as a critical biological substrate, and that it constitutes the neuroinflammatory disease pathway. After its release, mitochondrial DNA can be carried in the exosomes and transported to extracellular spaces in the central nervous system and peripheral circulation. Detectable exosomes render encaged mitochondrial DNA relatively stable. This mitochondrial DNA in peripheral circulation can thus be directly detected in clinical practice. These characteristics illustrate the potential for mitochondrial DNA to serve as an innovative clinical biomarker and molecular treatment target for major depressive disorder. This review also highlights the future potential value of clinical applications combining mitochondrial DNA with a panel of other biomarkers, to improve diagnostic precision in major depressive disorder.

关键词： biomarker cytokine exosomes inflammasome major depressive disorder microglia mitochondrial DNA mitochondrial dysfunction neuroinflammation Toll-like receptor

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Boosting alkaline hydrogen evolution performance by constructing ultrasmall Ru clusters/Na^(+),K^(+)-decorated porous carbon composites

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Nano Research 2023年第7期16卷 8836-8844页

作者： Mingxiu duan Tie shu Jingwei Li Daliang Zhang Li-yong Gan Ke Xin Yao Qiang Yuan State-Local Joint Laboratory for Comprehensive Utilization of Biomass Center for R&D of Fine ChemicalsCollege of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang 550025China School of Chemistry and Chemical Engineering Chongqing UniversityChongqing 400044China Multi-scale Porous Materials Center Institute of Advanced Interdisciplinary Studies&School of Chemistry and Chemical EngineeringChongqing UniversityChongqing 400044China College of Physics and Center of Quantum Materials and Devices Chongqing UniversityChongqing 401331China

The construction of efficient and durable electrocatalysts with highly dispersed metal clusters and hydrophilic surface for alkaline hydrogen evolution reaction(HER)remains a great ***,we prepared hydrophilic nanocomposites of Ru clusters(~1.30 nm)anchored on Na^(+),K^(+)-decorated porous carbon(Ru/Na^(+),K^(+)-PC)through hydrothermal method and subsequent annealing treatment at 500℃.The Ru/Na^(+),K^(+)-PC exhibits ultralow overpotential of 7 mV at 10 mA·cm^(-2),mass activity of 15.7 A·mgRu^(-1)at 100 mV,and long-term durability of 20,000 cycles potential cycling and 200 h chronopotentiometric measurement with a negligible decrease in activity,much superior to benchmarked commercial Pt/*** functional theory based calculations show that the energy barrier of H-OH bond breaking is efficiently reduced due to the presence of Na and K ions,thus favoring the Volmer ***,the Ru/Na^(+),K^(+)-PC effectively employs solar energy for obtaining H_(2)in both alkaline water and seawater *** finding provides a new strategy to construct high-performance and cost-effective alkaline HER electrocatalyst.

关键词： hydrogen evolution reaction decorated porous carbon ultrasmall Ru clusters electrocatalysts solar-to-hydrogen

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Activation of adult endogenous neurogenesis by a hyaluronic acid collagen gel containing basic fibroblast growth factor promotes remodeling and functional recovery of the injured cerebral cortex

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Neural Regeneration Research 2025年第10期20卷 2923-2937页

作者： Yan Li Peng Hao Hongmei duan Fei Hao Wen Zhao Yudan Gao Zhaoyang Yang Kwok-Fai So Xiaoguang Li Department of Neurobiology School of Basic Medical SciencesCapital Medical UniversityBeijingChina China Rehabilitation Science Institute China Rehabilitation Research CenterBeijing Key Laboratory of Neural Injury and RehabilitationBeijingChina Center of Neural Injury and Repair Beijing Institute for Brain DisordersBeijingChina Beijing Key Laboratory for Biomaterials and Neural Regeneration School of Engineering MedicineBeihang UniversityBeijingChina Guangdong-HongKong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) GuangzhouGuangdong ProvinceChina Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences The University of Hong KongHong Kong Special Administration RegionChina Center for Brain Science and Brain-Inspired Intelligence Guangdong-HongKong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Biomedical Engineering School of Biological Science and Medical EngineeringBeihang UniversityBeijingChina

The presence of endogenous neural stem/progenitor cells in the adult mammalian brain suggests that the central nervous system can be repaired and regenerated after ***,whether it is possible to stimulate neurogenesis and reconstruct cortical layers II to VI in non-neurogenic regions,such as the cortex,remains *** this study,we implanted a hyaluronic acid collagen gel loaded with basic fibroblast growth factor into the motor cortex immediately following traumatic *** findings reveal that this gel effectively stimulated the proliferation and migration of endogenous neural stem/progenitor cells,as well as their differentiation into mature and functionally integrated ***,these new neurons reconstructed the architecture of cortical layers II to VI,integrated into the existing neural circuitry,and ultimately led to improved brain *** findings offer novel insight into potential clinical treatments for traumatic cerebral cortex injuries.

关键词： adult endogenous neurogenesis basic fibroblast growth factor-hyaluronic acid collagen gel cortical remodeling functional recovery migration motor cortex injury neural circuits neural stem cells newborn neurons proliferation

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