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A Systematic Molecular dynamics Investigation on the Graphene Polymer Nanocomposites for Bulletproofing

Computers, Materials & Continua 2020年第12期65卷 2009-2032页

作者： Hamidreza Noori Zi Goangseup Bohayra Mortazavi Alessandro di Pierro Emad Jomehzadeh Xiaoying Zhuang Kim Sang-Hyun Timon rabczuk Institute of Structural Mechanics Bauhaus-Universität WeimarWeimarD-99423Germany Chair of Computational Science and Simulation Technology Department of Mathematics and PhysicsLeibniz Universität HannoverHannover30157Germany Cluster of Excellence PhoenixD(Photonics Opticsand Engineering-Innovation Across Disciplines)Gottfried Wilhelm Leibniz Universität HannoverHannoverGermany Dipartimento di ScienzaApplicata e Tecnologia Politecnico di TorinoAlessandria CampusAlessandria15121Italy Faculty of Mechanical and Material Engineering Graduate University of Advanced TechnologyKermanIran School of Civil Environmental and Architectural EngineeringKorea UniversitySeoulKorea Chief Research Engineer Mechanical Engineering R&D LabLIG Nex1Seung NamKorea Division of Computational Mechanics Ton Duc Thang UniversityHo Chi Minh CityVietnam Faculty of Civil Engineering Ton Duc Thang UniversityHo Chi Minh CityVietnam

In modern physics and fabrication technology,simulation of projectile and target collision is vital to improve design in some critical applications,like;bulletproofing and medical ***,the most prominent member of two dimensional materials presents ultrahigh tensile strength and ***,polydimethylsiloxane(PdMS)is one of the most important elastomeric materials with a high extensive application area,ranging from medical,fabric,and interface *** this work we considered graphene/PdMS structures to explore the bullet resistance of resulting *** this aim,extensive molecular dynamic simulations were carried out to identify the penetration of bullet through the graphene and PdMS composite *** this paper,we simulate the impact of a diamond bullet with different velocities on the composites made of single-or bi-layer graphene placed in different positions of PdMS *** underlying mechanism concerning how the PdMS improves the resistance of graphene against impact loading is *** discuss that with the same content of graphene,placing the graphene in between the PdMS result in enhanced bullet *** work comparatively examines the enhancement in design of polymer nanocomposites to improve their bulletproofing response and the obtained results may serve as valuable guide for future experimental and theoretical studies.

关键词： Graphene nanocomposites bulletproofing impact PdMS

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Binding interaction between rice bran albumin and sweet potato leaves polyphenol: Multi-spectroscopic and simulated molecular docking analysis

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International Journal of Biological Macromolecules 2025年 314卷 144319页

作者： Wen, Junren Sui, Yong Shi, Jianbin Xiong, Tian Cai, Fang Gao, Xiaomei Mei, Xin Key Laboratory of Agricultural Products Cold Chain Logistics Ministry of Agriculture and Rural Affairs Institute of Agro-Products Processing and Nuclear Agricultural Technology Hubei Academy of Agricultural Sciences Wuhan430064 China College of Food Science and Technology Huazhong Agricultural University Wuhan430070 China School of Modern Industry for Selenium Science and Engineering Wuhan Polytechnic University National R&D Center for Se-Rich Agricultural Products Processing Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products Wuhan430023 China

In this study, the changes in functional properties and binding mechanisms at the molecular level of a non-covalent complex formed between sweet potato leaf polyphenols (SPLPs) and rice bran albumin (rBA) were investigated. Multi-spectral analysis indicated that SPLPs statically quenched the intrinsic fluorescence of rBA, and fitting to a double logarithmic equation revealed that hydrogen bonding constituted the primary driving force behind this interaction. Consequently, the conformational structure, microenvironment, and surface hydrophobicity of rBA were significantly impacted. With 7 μmol/L of SPLPs added to rBA, the emulsifying activity and stability of the complexes were enhanced by 45.71 % and 392.30 %, respectively, compared to rBA. Similarly, the thermal stability of 3,5-diCQA was enhanced by 176.29 %, alongside an improved ultraviolet tolerance. Molecular docking and molecular dynamics simulations clarified that the A0A191ANP5, B8AHL6 and P52428 subunit in rBA has a stronger affinity with the most abundant polyphenols in SPLPs, which was the 3,5-disubstituted caffeoylquinic acid (3,5-diCQA). These findings may furnish a theoretical foundation for the prospective utilization of SPLPs and rBA complex products as functional food ingredients. © 2025 Elsevier B.V.

关键词： Molecular docking

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Protective Mechanism of Fruit Vinegar Polyphenols Against Ages-Induced Caco-2 Cell damage

SSRN

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SSrN 2022年

作者： Wu, Qian Kong, Yingfei Liang, Yinggang Niu, Mengyao Zhang, Chan Guo, Zhiqiang Xiao, Juan He, Yi Zhou, Mengzhou Feng, Nianjie National "111" Center for Cellular Regulation and Molecular Pharmaceutics Hubei Key La-boratoy of Industrial Microbiology Hubei Research Center of Food Fermentation En-gineering and Technology Hubei University of Technology Hubei Wuhan430068 China Beijing Laboratory of Food Quality and Safety School of Food and Chemical Engineering Beijing Technology and Business University Beijing100048 China State Key Laboratory of Marine Resource Utilization in South China Sea Ministry of Education Key Laboratory of Food Nutrition and Functional Food of Hainan Province Engineering Research Center of Utilization of Tropical Polysaccharide Resources School of Food Science and Engineering Hainan University Haikou China National R&D Center for Se-rich Agricultural Products Processing Hubei Engineering Research Center for Deep Processing of Green Se-rich Agricultural Products School of Modern Industry for Selenium Science and Engineering Wuhan Polytechnic University Wuhan430023 China

Accumulation of advanced glycation end products (AGEs) is linked with development or aggravation of many degenerative processes or disorders. Fruit vinegars are rich in polyphenols that can be a good dietary source of AGEs inhibitors. In this study, eight kinds of vinegars were prepared. Among them, the highest polyphenol and flavonoid content were orange vinegar and kiwi fruit vinegar, respectively. Ferulic acid, vanillic acid, chlorogenic acid, p-coumaric acid, caffeic acid, catechin, and epicatechin were main polyphenols in eight fruit vinegars. Then, we measured the inhibitory effect of eight fruit vinegars on fluorescent AGEs, and found that orange vinegar had the highest inhibitory rate. data here suggested that orange vinegar and its main components catechin, epicatechin, and p-coumaric acid could effectively reduce the level of rOS, rAGE, NAdPH and inflammatory factors in Caco-2 cells. Our research provided theoretical basis for the application of orange vinegar as AGEs inhibitor. © 2022, The Authors. All rights reserved.

关键词： Citrus fruits

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Arduino Controller Based 3-Switch Isolated dC-dC Boost Converter for PV and Battery Application

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Journal of Physics: Conference Series 2021年第1期1979卷

作者： I. William Christopher J. Jones Priya Axin X raghul P. Vignesh Kumar S. Vimal raj Associate Professor/EEE Loyola-ICAM College of Engineering and Technology Chennai India Software Engineer Capgemini Technology Services India Limited Bangalore India Electrical Supervisor Quess Corporation Pvt. Ltd Chennai India Maintenance Engineer Schindler India Pvt.Ltd Chennai India R&D Engineer Anugraha Enterprises Chennai India

This paper discusses a Arduino controlled 3-switch Isolated dC-dC Boost converter for PV and battery application. The presented converter has vital benefits such as a switch reduction, snubber circuit elimination with an additional diode, a capacitor; obtain the same primary and secondary voltage waveforms of the transformer with duty cycle variation. The MATLAB Simulink model of the presented converter for 95W PV system has been developed for 20V dc input. The hypothetical forecasts and the performance of the PV based presented converter has been effectively confirmed with the aid of simulation results. The experimental setup of the presented converter for 100W PV module has been successfully implemented using Arduino Uno microcontroller to confirm the simulation outcomes.

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InTransBo: An Integrative Transcript Library to Enable Genome-Free Systematic Exploration of Bougainvillea

Research Square

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research Square 2020年

作者： Luo, Qi Chen, Ziliang Xu, Tingting Huang, dangzheng Hou, Haitao Hong, Chenjie Zhan, Fulin Guo, Hangqi Lin, Zhe Guo, Xiaoling Chen, Liang Ji, Zhi-Liang The R&D Group of the General Engineer Office The Road Development Center of Xiamen Xiamen361000 China The Wanyin Environmental Technology Limited Company Xiamen361000 China School of Life Sciences Xiamen University Xiamen361102 China College of the Environment & Ecology Xiamen University Xiamen361102 China

Members of the genus Bougainvillea are rich sources of natural dyes, pigments, and traditional medicines. They are also commonly used as ornamentals in roadside landscape construction. However, the horticultural development of Bougainvillea flowers with extended growth periods and coloration is not always feasible. One reason is limited molecular knowledge and no genomic information for Bougainvillea. Here, we compiled an expressed transcript sequence library for Bougainvillea by integrating 20 Illumina-sequencing rNA transcriptomes. The library consisted of 97,623 distinct transcripts. Of these, 47,006 were protein-coding, 31,109 were lncrNA, and 19,508 were unannotated. We also confirmed that the library is an alternative genomic reference for accurate transcriptome assembly and its performance was substantially better than that of the de novo method. We also curated the Integrative Transcript Library database for Bougainvillea known as InTransBo (http://***/InTransBo/***). To the best of our knowledge, the present study is the first large scale genomic resource for Bougainvillea. Overall, the library helps fill the genomic gap and elucidate the transcriptional nature of Bougainvillea. It may also advance progress in the precise regulation of flowering in horticulture. The same strategy can be readily applied toward the systematic exploration of other plant species lacking complete genomic information. © 2020, CC BY.

关键词： rNA

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Next-CSP concept with particle receiver applied to a 150 MWe solar tower

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AIP Conference Proceedings 2022年第1期2445卷

作者： Frédéric Siros Benoît Valentin Bo Liu Jan Baeyens Gilles Flamant 1Research Engineer EDF R&D 6 quai Watier 78400 Chatou - France 2European Powder and Process Technology Park Tremeland 9 3120 Tremelo Belgium 3PROMES-CNRS Rue du Four Solaire 7 66120 Font Romeu France

The current benchmark for CSP is the molten salt tower. The next generation of CSP plant should keep the general architecture of the current benchmark – namely the molten salt tower with its direct storage – but should operate at higher temperatures in order to downsize its solar field through higher efficiency. Solid particles are the best candidate today to replace the molten salt as storage medium. They are used as both storage medium and heat transfer fluid that works as an in-tube upward bubbling fluidized bed in the solar ***-CSP is a project funded by the European Union’s H2020 program that aims at developing a new concept of particle solar receiver and validating it with a 1.2 MWe demonstration plant. The project also includes the study of a future utility-scale plant based on the concept in order to assess its technical and economic feasibility. This paper outlines the preliminary design of such a 150 MWe Next-CSP plant. Cost estimates were made with reasonable uncertainties to make design choices but are not dealt with in this *** plant is designed as a peaker that generates power during the evening. due to inherent limitations of the concept, the solar receiver is a cavity one with a limited thermal output, which makes a multi-tower configuration mandatory. Our plant has six towers, each one with one receiver. Bucket elevators were chosen to lift the particles from ground level to the receivers. The layout of the whole solar island was optimized to minimize the cumulated length of the network that horizontally conveys the particles between the storage system and the six towers. The chosen layout, named “Vertical Star”, allows for a cumulated length of 4.0 km, which is still very challenging in terms of Capex and thermal losses. Continuous-flow conveyors and proper design limit the thermal losses to 5%.The power cycle is an externally-heated gas turbine operated in combined cycle. Whilst the bottoming steam cycle is standard, the gas turbin

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revisiting the normal stiffness–permeability relations for shale fractures under true triaxial stress

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Journal of rock Mechanics and Geotechnical engineering 2025年

作者： Fudong Li derek Elsworth Xia-Ting Feng Tianyu Chen Jun Zhao Yingchun Li Jianyu Zhang Qiong Wu Guanglei Cui Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines School of Resources and Civil Engineering and Key Laboratory of Liaoning Province on Deep Engineering and Intelligent Technology Northeastern University Shenyang 110819 China Department of Energy and Mineral Engineering EMS Energy Institute and G3 Center Pennsylvania State University University Park PA 16802 USA State Key Laboratory of Coal Mine Safety Technology China Coal Technology & Engineering Group Shenyang Research Institute Shenfu Demonstration Zone Shenyang 113122 China National Energy Shale Gas R&D (Experiment) Center Langfang 065007 China State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China No. 3 Oil Production Plant of Daqing Oilfield Company Ltd Daqing 163113 China No. 4 Oil Production Plant of Daqing Oilfield Company Ltd Daqing 163511 China

Understanding the relationship between normal stiffness and permeability in rock fractures under high and true-triaxial in situ stress conditions is critical to assess hydro-mechanical coupling in the Earth’s crust. Previous data on stiffness–permeability relations are measured under uniaxial stress states as well as under normal stress. However, many projects involve faulted formations with complex three-dimensional (3d) stress states or significant changes to the original stress state. We rectified this by following the permeability evolution using a true-triaxial stress-permeability apparatus as well as independently applying a spectrum of triaxial stresses from low to high. The relationship between permeability and fracture normal stiffness was quantified using constraints based on the principle of virtual work. The impacts of fracture-lateral and fracture-normal stresses on permeability and normal stiffness evolution were measured. It was found that permeability decreases with increasing fracture-lateral and fracture-normal stresses as a result of Poisson confinement, independent of the orientation of the fracture relative to the stresses. The lateral stresses dominated the evolution of normal stiffness at lower normal stresses ( σ 3 = 10 MPa) and played a supplementary role at higher normal stresses ( σ 3 > 10 MPa). Moreover, correlations between the evolution of permeability and normal stiffness were extended beyond the low-stiffness, high-permeability region to the high-stiffness, low-permeability region under high fracture-lateral stresses (10‒80 MPa) with fracture-normal stress (10‒50 MPa) conditions. Again, high lateral stresses further confined the fracture and therefore reduced permeability and increased normal stiffness, which exceeded the previous reported stiffness under no lateral stress conditions. This process enabled us to identify a fundamental change in the flow regime from multi-channel to isolated channelized flow. These results provide impor

关键词： fracture permeability deformation fracture normal stiffness true-triaxial stress principle of virtual work

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Scale dependence of material response at extreme incident radiative heat flux 12th

Scale dependence of material response at extreme incident ra...

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12th AIAA/ASME Joint Thermophysics and Heat Transfer Conference, 2018

作者： Brown, Alexander L. Engerer, Jeffrey d. ricks, Allen J. Christian, Joshua M. R&D Engineer Fire Science and Technology Department Sandia National Laboratories PO Box 5800 MS 1135 AlbuquerqueNM87185-1135 United States R&D Engineer Advanced Nuclear Fuel Cycle Technology Department Sandia National Laboratories PO Box 5800 MS 1135 AlbuquerqueNM87185-1135 United States R&D Engineer Concentrating Solar Technology Department Sandia National Laboratories PO Box 5800 MS 1135 AlbuquerqueNM87185-1135 United States

ISBN: (数字)9781624105524

ISBN: (纸本)9781624105524

The thermal environment generated during an intense radiation event like a nuclear weapon airburst, lightning strike, or directed energy weaponry has a devastating effect on many exposed materials. Natural and engineered materials can be damaged and ignite from the intense thermal radiation, potentially resulting in sustained fires. Understanding material behavior in such an event is essential for mitigating the damage to a variety of defense systems, such as aircraft and weaponry. Flammability and ignition studies in this regime (very high heat flux, short duration) are less plentiful than in the heat flux regimes representative of typical fires. The flammability and ignition behavior of a material may differ at extreme heat flux due to the balance of the heat conduction into the material compared to other processes. Length scale effects may also be important in flammability and ignition behavior, especially in the high heat flux regime. A variety of materials have recently been subjected to intense thermal loads (~100–1000 kW/m2) in testing at both the Solar Furnace and the Solar Tower at the National Solar Thermal Test Facility at Sandia National Laboratories. The Solar Furnace, operating at a smaller scale (≈30 cm2 area), provides the ability to test a wide range of materials under controlled radiative flux conditions. The Solar Tower exposes objects and materials to the same flux on a much larger scale (≈4 m2 area), integrating complex geometry and scale effects. results for a variety of materials tested in both facilities are presented and compared. Material response often differs depending on scale, suggesting a significant scale effect. Mass loss per unit energy tends to go down as scale increases, and ignition probability tends to increase with scale. © 2018 by National technology and engineering Solutions of Sandia, LLC.

关键词： Heat flux

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Progresses in treatment processes and quantification strategies of micro- and nanoplastics

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Progress in Natural Science: Materials International 2025年

作者： Qi Shao Yi Yang Huimin Liang Kerui Zhang Zeyu Ma Wenwu Wang Zilu Hu rui Wang Jibing Chen Yulai Han Liang He School of Mechanical Engineering State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering Sichuan University Chengdu 610065 PR China Department of Orthopedic West China Hospital Sichuan University Chengdu 610041 PR China School of Mechanical Engineering Yeungnam University Gyeongsan 712-749 Republic of Korea School of Mechnical Engineering Wuhan Polytechnic University Wuhan 430023 PR China College of New Materials and New Energies Shenzhen Technology University Shenzhen 518118 PR China Med+X Center for Manufacturing West China Hospital Sichuan University Chengdu 610041 PR China Yibin Industrial Technology Research Institute of Sichuan University Yibin R&D Park of Sichuan University Yibin 644005 PR China

Plastics are the choice for package of products, medical implants, and other applications. But the transformation of plastics into minuscule particles, known as micro- and nanoplastics (MNPs, microplastics’ size <5 mm and nanoplastics’ size <1 μm), through physical action or chemical degradation, led to their widespread presence in virtually every ecosystem, and there are concerns about their impact on the environment and human health. Therefore, establishing standardized lines for maximum concentrations of MNPs in a system is essential to ensure the coexistence of MNPs with nature as well as humans. However, the complexity and diversity of MNPs in terms of size, polymer type, and density make the identification and quantification of MNPs a significant challenge. This review introduces representative treatment processes for purification or extraction of MNPs from environmental samples, and the advanced methods for quantitative analysis of MNPs. Special attention is paid to techniques related to the quantitative analysis of MNPs, and the advantages and limitations of these methods are discussed. Moreover, the necessity of establishing harmonized and standardized methods for the quantitative analysis of MNPs in investigating standardized lines of maximum concentrations of MNPs in the systems is envisioned, and the challenges and urgent issues with concerns for the future are discussed and summarized.

关键词： Micro- and nanoplastics Microplastics Pretreatment methods Quantification Staining

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Structural design of Prefabricated Sidewalk in Sponge City

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IOP Conference Series: Materials Science and engineering 2020年第1期964卷

作者： Xuejun Wen Ming Huang Vice-Chief Engineer Shanghai Municipal Engineering Design Institute (Group) Co. Ltd. Shanghai 200092 China Senior Engineer(R&D) PhD Postdoctoral Greenland Infrastructure Group Co. Ltd. Shanghai 200010 China Senior Engineer(R&D) PhD Postdoctoral GIG Technology Research Institute Shanghai 200010 China

In the traditional pavement design, rainwater is mainly discharged by surface runoff, and in the structural design, the key point is the pavement waterproof. Therefore, the traditional sidewalk design is inconsistent with the requirements of sponge city. The research basis of this paper comes from a field engineering, the structural parameters of prefabricated sidewalk and the corresponding design methods are studied and summarized. The structural function of sidewalk is realized by superposition and combination of each structural layer. For the realization of prefabricated sponge sidewalk technology, the function of each structural layer must be fully considered, and the function of each structural layer should be designed and combined according to the design purpose. The results show that, by discussing the function of each layer of prefabricated sidewalk, the structural layer of prefabricated sidewalk is preliminarily determined(see Figure 2 in main text); according to the strength requirements and water permeability requirements of the structure, the thickness range of the structural layer is 13.11cm-21.3cm; finally, the relationship between plate thickness and critical position load, temperature fatigue stress, and finally determines the thickness of precast cement concrete slab is 15cm.

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