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Toward ultra-high strength high entropy alloys via feature engineering

Journal of Materials science & technology 2024年第33期200卷 243-252页

作者： Yan Zhang Cheng Wen Pengfei Dang Turab Lookman Dezhen Xue Yanjing Su Beijing Advanced Innovation Center for Materials Genome Engineering University of Science and Technology BeijingBeijing100083China Corrosion and Protection Center University of Science and Technology BeijingBeijing100083China Northwest Institute for Non-ferrous Metal Research Xi’an710016China College of Mechanical Engineering Guangdong Ocean UniversityZhanjiang524000China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an710049China AiMaterials Research LLC Santa FeNew Mexico87501United States

Machine learning assisted design of materials is so far based on features selected by considering the accuracy of model predictions,and those features do not necessarily ensure a high efficiency in searching for new *** we estimate the efficiency of active learning loop by resampling method using available data as an alternative criterion for *** selected features allow an optimization of targeted property with as few new experiments as *** those features into machine learning,we synthesized new high entropy alloys(HEAs)with strengths 2.8–3.0 GPa within five experimental *** alloy AlVCrCoNiMo is found to possess compressive specific yield strengths of 397,144 and 105(MPa cm^(3))/g at 25,800 and 900℃,*** specific yield strength of AlVCrCoNiMo alloy at 800℃is about twice that of the commercial Inconel 718 and the typical refractory HEA of VNbMoTaW.A unique microstructure consisting of multi-scale hierarchical B2 precipitates with coherent interfaces to the BCC matrix strengthens the *** strategy of maximizing active learning efficiency provides a recipe for selecting features that accelerate the optimization of targeted property.

关键词： Machine learning Feature selection High entropy alloys Active learning Precipitation

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Light-driven interconversion of Pd_(2)L_(4)cage and mononuclear PdL_(2)mediated by the isomerization of azobenzene ligand

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Chinese Chemical Letters 2023年第6期34卷 358-361页

作者： Jinkang Zhu Xujin Chen Xin Jin Qiaochun Wang Key Laboratory for Advanced Materials Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China

The lantern-shaped cage Pd_(2)L_(4)and tweezer-like PdL_(2)can be synthesized from the trans-and cis-isomer of an azobenzene-containing ligand,respectively,which were characterized by^(1)H,^(13)C,^(1)H-^(1)H COSY,DOSY NMR spectroscopies,high-resolution ESI-MS and density function theory(DFT)*** interconversion of Pd_(2)L_(4)and PdL_(2)can be achieved via the cis-trans isomerization of the azobenzene unit on the ligand upon alternative irradiation of light 365 nm or 420 nm.

关键词： Molecular cage Azobenzene Isomerization Pd_(2)L_(4) PdL_(2)

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Micromechanical interlocking-inspired dendritic porous silicabased multimodal resin composites for the tooth restoration

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Nano research 2024年第10期17卷 9065-9077页

作者： Hongyan Chen Junjun Wang Shi Yin Ruili Wang Xinquan Jiang Meifang Zhu State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Material Science and EngineeringDonghua UniversityShanghai 201620China Shanghai Engineering Research Center of Advanced Dental Technology and Materials Shanghai Key Laboratory of StomatologyShanghai Research Institute of StomatologyNational Clinical Research Center for Oral DiseasesShanghai Ninth People’s HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineShanghai 200011China

Porous silica particles have shown great potential application as reinforcing fillers in the field of dentistry due to their ability to construct the micromechanical interlocking effect at filler-matrix ***,how to accurately regulate the pore structure,especially the pore size,to increase the degree of the micromechanical interlocking and the performance of materials remains a ***,we have proposed a facile self-assembly process to synthesize dendritic porous silica with tunable pore sizes(DPS-x)by adjusting the chain-length of the alcohols in the *** mechanism of nucleation-growth is further put *** results indicate that the pore size of DPS-x indeed affects the mechanical property of composites,where the DPSpen particles with intermediate pore size are chosen as the optimal reinforcing *** bimodal and multimodal filler formulations are further established to address the loading limitation of unimodal DPS-pen(46 wt.%).In virtue of the closepacked structure of identical spheres,the particle sizes of secondary silica embedded into the maximally loaded bimodal D3S7 composite(DPS-pen:Si430=30:70,w/w)are theoretically calculated without *** all formulations,the developed multimodal D3S7+Si178+Si90 filler exhibits superior mechanical properties,the lowest shrinkage,and high polymerization conversion for dental composites,along with satisfied waster sorption and solubility,and good biocompatibility in vitro and in vivo,which are comparable to commercial composite Z350 XT(3M,USA).These DPS-x particles and their multimodal fillers can also be applied to other polymer-based biomaterials.

关键词： porous silica pore size multimodal filler dental composite physicochemical properties biosafety

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CSPP1 stabilizes microtubules by capping both plus and minus ends

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Journal of Molecular Cell Biology 2024年第2期16卷 36-46页

作者： Zhikai Wang Wenwen Wang Shuaiyu Liu Fengrui Yang Xu Liu Shasha Hua Lĳuan Zhu Aoqing Xu Donald LHill Dongmei Wang Kai Jiang Jennifer Lippincott-Schwartz Xing Liu Xuebiao Yao MOE Key Laboratory for Membraneless Organelles and Cellular Dynamics Center for Advanced Interdisciplinary Science and Biomedicine of IHMUniversity of Science and Technology of China School of Life SciencesHefei 230027China Anhui Key Laboratory for Cellular Dynamics and Chemical Biology Hefei National Research Center for Interdisciplinary Sciences at the MicroscaleHefei 230027China Frontier Science Center for Immunology and Metabolism Medical Research InstituteWuhan UniversityWuhan 430071China Comprehensive Cancer Center University of AlabamaBirminghamAL 35233USA Janelia Research Campus Howard Hughes Medical InstituteAshburnVA 20147USA

Although the dynamic instability of microtubules(MTs)is fundamental to many cellular functions,quiescent MTs with unattached free distal ends are commonly present and play important roles in various events to power cellular ***,how these free MT tips are stabilized remains poorly ***,we report that centrosome and spindle pole protein 1(CSPP1)caps and stabilizes both plus and minus ends of static ***-time imaging of laser-ablated MTs in live cells showed deposition of CSPP1 at the newly generated MT ends,whose dynamic instability was concomitantly ***,MT ends in CSPP1-overexpressing cells were hyper-stabilized,while those in CSPP1-depleted cells were much more *** CSPP1-elicited stabilization of MTs was demonstrated to be achieved by suppressing intrinsic MT catastrophe and restricting ***,CSPP1-bound MTs were resistant to mitotic centromere-associated kinesin-mediated *** findings delineate a previously uncharacterized CSPP1 activity that integrates MT end capping to orchestrate quiescent MTs.

关键词： CSPP1 microtubule plus end minus end capping

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Pixel-excitation-gating enhanced nonlinear imaging with a GHz femtosecond pulse laser

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Chinese Optics Letters 2024年第12期22卷 33-37页

作者： Wenlong Wang Junpeng Wen Yuke Sheng Wei Lin Chiyi Wei Cihang Kong Dongdan Chen Xiaoming Wei Zhongmin Yang School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China Institute for Translational Brain Research Fudan UniversityShanghai 200032China School of Materials Science and Engineering Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and DevicesGuangdong Provincial Key Laboratory of Fiber Laser Materials and Applied TechniquesSouth China University of TechnologyGuangzhou 510641China Research Institute of Future Technology South China Normal UniversityGuangzhou 510006China

In this Letter,we propose a pixel-excitation-gating technology for high-sensitivity nonlinear imaging excited by femtosecond pulses at a GHz repetition rate,which can enhance the signal quality of nonlinear *** validate this technology,we apply it to a customized two-photon excitation(TPE)fluorescence microscope that uses a GHz femtosecond pulse fiber laser as the excitation *** with the excitation using a continuous GHz pulse train,up to~4-fold enhancement of fluorescence signal can be obtained when the excitation pulse train is gated with a 25%duty cycle of the pixel dwell time,under constant average *** is anticipated that pixel-level-excitation gating can be an add-on solution for fluorescence signal enhancement in nonlinear imaging systems that are excited by GHz femtosecond ***,the pixel-level excitation control would allow more flexible excitation.

关键词： multiphoton fluorescence microscopy GHz femtosecond pulse laser signal enhancement pixel-excitation gating

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Osteogenesis Improvement of Gelatin-Based Nanocomposite Scaffold by Loading Zoledronic Acid

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FRONTIERS IN BIOENGINEERING AND BIOtechnology 2022年 10卷 890583页

作者： Abdulahy, Sayed Behnam Esmaeili Bidhendi, Mona Vaezi, Mohammad Reza Moosazadeh Moghaddam, Mehrdad Biomaterial and Tissue Engineering Department Breast Cancer Research Center Motamed Cancer Institute ACECR Tehran Iran Faculty of New Science and Technology University of Tehran (UT) Tehran Iran Department of Nanotechnology and Advanced Material Materials and Energy Research Center (MERC) Karaj Iran Applied Biotechnology Research Center Baqiyatallah University of Medical Sciences Tehran Iran

Bisphosphonates (BPs) such as Zoledronic acid (ZA) are a subset of synthetic small molecules, which are now marketed as the main drugs to stimulate the growth and differentiation of osteoblast cells, thereby increasing bone formation as well as preventing bone loss. Also, Halloysite Nanotubes (HNTs)-polymer composites have attracted a lot of attention due to their high surface-to-volume ratio, low density, and high hydrophilicity, and are easily dispersed in hydrophilic biopolymers. In addition, their ability to carry enough amounts of drugs and the ability to control release has been demonstrated. Based on studies, the Gelatin-based scaffold with Halloysite nanotube (HNT) has the capacity as a drug carrier and Zoledronic acid (ZA) sustains release. Previous studies show that using ZA intravenously has some severe side effects and limitations. But by attention to the advantages of its osteogenesis, the current study has been done in order to reduce the side effects of local delivery of it. The 3-dimensional scaffolds were prepared by the Freeze-drying method. Characterization methods such as FE-SEM, FTIR, XRD, and release behavior of the scaffold has been performed to evaluate the features of the scaffolds. In fact, as-prepared Gel-HNT/ZA release 49% ZA in Phosphate Buffered Saline (PBS) within 21 days. The mechanical properties have been increased after adding HNTs and ZA from 10.27 to 26.18 MPa. Also, the water absorption has been increased after adding HNTs and ZA from 1.67 to 5.02 (g/g). Seeded human Adipose stem cells (hASCs) on the prepared scaffolds showed that the ZA effectively elevated the proliferation of the hASCs and also the MTT results proved the non-toxicity of all prepared scaffolds by high cell viability (>80%). The osteogenic differentiation has been accelerated as displayed by ALP and Ca assay. The results propose that the HNTs-loaded Gelatin scaffold could control the releasing of ZA and its localized delivery at the defect site, simultaneously

关键词： zoledronic acid halloysite gelatin nanocomposite osteogenesis scaffolds

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Fluorogenic sensing of amorphous aggregates,amyloid fibers,and chaperone activity via a near-infrared aggregation-induced emission-active probe

Aggregate

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Aggregate 2024年第1期5卷 309-320页

作者： Wei He Yuanyuan Yang Yuhui Qian Zhuoyi Chen Yongxin Zheng Wenping Zhao Chenxu Yan Zhiqian Guo Shu Quan State Key Laboratory of Bioreactor Engineering Shanghai Collaborative Innovation Center for Biomanufacturing(SCICB)East China University of Science and TechnologyShanghaiChina Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Shanghai Key Laboratory of Functional Materials ChemistryFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghaiChina Shanghai Frontiers Science Center of Optogenetic Techniques for Cell Metabolism East China University of Science and TechnologyShanghaiChina

The presence of protein aggregates in numerous human diseases underscores the significance of detecting these aggregates to comprehend disease mechanisms and develop novel therapeutic approaches for combating these *** the development of various biosensors and fluorescent probes that selectively target amyloid fibers or amorphous aggregates,there is still a lack of tools capable of simultaneously detecting both types of ***,we demonstrate the quantitative discernment of amorphous aggregates by QM-FN-SO3,an aggregationinduced emission(AIE)probe initially designed for detecting amyloid *** probe easily penetrates the membranes of the widely-used prokaryotic model organism Escherichia coli,enabling the visualization of both amorphous aggregates and amyloid fibers through near-infrared ***,the probe exhibits sensitivity in distinguishing the varying aggregation propensities of proteins,regardless of whether they form amorphous aggregates or amyloid fibers in *** properties contribute to the successful application of the QM-FN-SO3 probe in the subsequent investigation of the antiaggregation activities of two outer membrane protein(OMP)chaperones,both in vitro and in their physiological ***,our work introduces a near-infrared fluorescent chemical probe that can quantitatively detect amyloid fibers and amorphous aggregates with high sensitivity in vitro and in ***,it demonstrates the applicability of the probe in chaperone biology and its potential as a high-throughput screening tool for protein aggregation inhibitors and folding factors.

关键词： aggregation-induced emission fluorescence molecular chaperone protein aggregation

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New insight into the exotic states strongly coupled with the DD^(*)from the T_(cc)^(+)

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science Bulletin 2024年第19期69卷 3036-3041页

作者： Guang-Juan Wang Zhi Yang Jia-Jun Wu Makoto Oka Shi-Lin Zhu KEK Theory Center Institute of Particle and Nuclear Studies(IPNS)High Energy Accelerator Research Organization(KEK)Tsukuba 305-0801Japan School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China School of Physical Sciences University of Chinese Academy of Sciences(UCAS)Beijing 100049China Southern Center for Nuclear-Science Theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China Advanced Science Research Center Japan Atomic Energy AgencyTokai 319-1195Japan Nishina Center for Accelerator-Based Science RIKENWako 351-0198Japan School of Physics and Center of High Energy Physics Peking UniversityBeijing 100871China

We have investigated the internal structure of the open-and hidden-charmed(DD^(*)/DD^(*))molecules in the unified *** first fit the experimental lineshape of the Tt state and extract the DD^(*)interaction,from which the T is assumed to arise *** we obtain the DD^(*)interaction by charge *** results show that the DD*interaction is attractive but insufficient to form X(3872)as a bound ***,its formation requires the crucial involvement of the coupled channel effect between the DD^(*)and cc components,although the cc accounts for approximately 1%*** X(3872),we have obtained a higher-energy state around 3957.9 MeV with a width of 16.7 MeV,which may be a potential candidate for the X(3940).In J^(PC)=1^(+-)sector,we have found two states related to the iso-scalar X(3872)and h_(c)(2P),*** combined study provides valuable insights into the nature of these DD^(+)/DD^(+)exotic states.

关键词： Quark model Charmonium(-like)states Coupled-channel effect Exotic hadrons

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Fe-based amorphous coating prepared using high-velocity oxygen fuel and its corrosion behavior in static lead-bismuth eutectic alloy

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International Journal of Minerals,Metallurgy and Materials 2022年第11期29卷 2032-2040页

作者： Xiangyang Peng Yuhai Tang Xiangbin Ding Zhichao Lu Shuo Hou Jianming Zhou Shuyin Han Zhaoping Lü Guangyao Lu Yuan Wu Equipment Research Center China Nuclear Power Technology Research Institute Co.Ltd.Shenzhen 518000China State Key Laboratory for Advanced Metals and Materials University of Science&Technology BeijingBeijing 100083China

The Fe_(949.7)Cr_(18)Mn_(1.9)Mo_(7.4)W_(1.6)B_(15.2)C_(3.8)Si_(2) amorphous coating was deposited on T91 steel substrate by using the high-velocity oxygen fuel(HVOF)spray technique to enhance the corrosion resistance of T91 stainless steel in liquid lead-bismuth eutectic(LBE).The corrosion behavior of the T91 steel and coating exposed to oxygen-saturated LBE at 400℃ for 500 h was *** showed that the T91 substrate was severely corroded and covered by a homogeneously distributed dual-layer oxide on the interface contacted to LBE,consisting of an outer magnetite layer and an inner Fe-Cr spinel ***,the amorphous coating with a high glass transition temperature(Tg=550℃)and crystallization temperature(T_(x)=600℃)exhibited dramatically enhanced thermal stability and corrosion *** visible LBE penetration was observed,although small amounts of Fe_(3)O_(4),Cr_(2)O_(3),and PbO were found on the coating *** addition,the amorphicity and interface bonding of the coating layer remained unchanged after the LBE *** Fe-based amorphous coating can act as a stable barrier layer in liquid LBE and have great application potential for long-term service in LBE-cooled fast reactors.

关键词： Fe-based amorphous coating high-velocity oxygen fuel corrosion behavior lead-bismuth eutectic

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Machine Learning-Based Solution for SMS Spam Detection Problem 2

Machine Learning-Based Solution for SMS Spam Detection Probl...

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2nd International Conference of Intelligent Methods, Systems and Applications, IMSA 2024

作者： Shdefat, Ahmed Younes Sedky, Nouran M. Bialy, Zeina H. El Ahmed, Shahd Fathi, Hanaa Abdelminaam, Diaa Salama College of Engineering and Technology American University of the Middle East Egaila54200 Kuwait Applied Science Private University Applied Science Research Center Amman Jordan Misr International University Faculty of Computer Science Cairo Egypt Jadara University Jadara Research Center Irbid21110 Jordan Middle East University MEU Research Unit Amman11831 Jordan

ISBN: (纸本)9798350362633

The article describes a new method for image detection using machine learning, based on the development of sophisticated security systems tailored for examining digital media to identify and scrutinize altered images. Using deep learning models and advanced image processing techniques, the authors demonstrate high accuracy and efficiency i n detecting face modifications a nd malicious content within digital images. The authors illustrate the proposed technique by evaluating its performance on a unique dataset of unaltered and modified images. The method allows for improving detection accuracy by 93.99% and demonstrates robustness in real-time applications. The new method's effectiveness is confirmed by calculating precision and recall metrics. New research results develop advanced security solutions that can be used to enhance digital forensics, content authentication, and cybersecurity applications. Novelty and scientific contributions lie in integrating deep learning for real-time media analysis and enhancing data authenticity and integrity. © 2024 IEEE.

关键词： Adversarial machine learning

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