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Fire resistance evaluation through synthetic fire tests and generative adversarial networks

Frontiers of Structural and Civil Engineering 2024年第4期18卷 587-614页

作者： Aybike Özyüksel Çiftçioğlu M.Z.Naser Department of Civil Engineering Manisa Celal Bayar University45140Türkiye School of Civil&Environmental Engineering and Earth Sciences(SCEEES) Clemson UniversityClemsonSC 29631USA Artificial Intelligence Research Institute for Science and Engineering(AIRISE) Clemson UniversityClemsonSC 29631USA

this paper introduces a machine learning approach to address the challenge of limited data resulting from costly and time-consuming fire experiments by enlarging small fire test data sets and predicting the fire resistance of reinforced concrete *** approach begins by creating deep learning models,namely generative adversarial networks and variational autoencoders,to learn the spatial distribution of real fire *** then use these models to generate synthetic tabular samples that closely resemble realistic fire resistance values for reinforced concrete *** generated data are employed to train state-of-the-art machine learning techniques,including Extreme Gradient Boost,Light Gradient Boosting Machine,Categorical Boosting Algorithm,Support Vector Regression,Random Forest,Decision tree,Multiple Linear Regression,Polynomial Regression,Support Vector Machine,Kernel Support Vector Machine,Naive Bayes,and K-Nearest Neighbors,which can predict the fire resistance of the columns through regression and *** learning analyses achieved highly accurate predictions of fire resistance values,outperforming traditional models that relied solely on limited experimental *** study highlights the potential for using machine learning and deep learning analyses to revolutionize the field of structural engineering by improving the accuracy and efficiency of fire resistance evaluations while reducing the reliance on costly and time-consuming experiments.

关键词： deep learning fire resistance generative adversarial networks machine learning

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Understanding the oxidation chemistry of ti_(3)C_(2)t_(x)(MXene)sheets and their catalytic performances

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Journal of Energy Chemistry 2024年第1期88卷 437-445,I0010页

作者： Suvdanchimeg Sunderiya Selengesuren Suragtkhuu Solongo Purevdorj tumentsereg Ochirkhuyag Munkhjargal bat-Erdene Purevlkham Myagmarsereejid Ashley DSlattery Abdulaziz SRbati Joseph GShapter Dorj Odkhuu Sarangerel Davaasambuu Munkhbayar batmunkh Department of Chemistry Division of Natural SciencesSchool of Arts and SciencesNational University of MongoliaUlaanbaatar 14200Mongolia Queensland Micro-and Nanotechnology Centre School of Environment and ScienceGriffith UniversityNathan campusBrisbaneQueensland 4111Australia Department of Physics Incheon National UniversityIncheon 22012Republic of Korea Australian Institute for Bioengineering and Nanotechnology The University of QueenslandSt LuciaBrisbaneQueensland 4072Australia Adelaide Microscopy The University of AdelaideAdelaideSouth Australia 5005Australia Centre for Organic Photonics&Electronics School of Chemistry and Molecular BiosciencesThe University of QueenslandSt LuciaBrisbaneQueensland 4072Australia

transition metal carbides and nitrides(MXenes)nanosheets are attractive two-dimensional(2D)materials,but they suffer from oxidation/degradation issues during storage and/or applications due to their sensitivity to water and *** the great research progress,the exact oxidation kinetics of ti_(3)C_(2)t_(x)(MXene)and their final products after oxidation are not fully ***,we systematically tracked the oxidation process of few-layer ti_(3)C_(2)t_(x) nanosheets in an aqueous solution at room temperature over several *** also studied the oxidation effects on the electrocatalytic properties of ti_(3)C_(2)t_(x) for hydrogen evolution reaction and found that the overpotential to achieve a current density of 10 mA cm^(-2)increases from 0.435 to 0.877 V after three weeks of degradation,followed by improvement to stabilized values of around 0.40 V after eight *** results suggest that severely oxidized MXene could be a promising candidate for designing efficient *** to our detailed experimental characterization and theoretical calculations,unlike previous studies,black titanium oxide is formed as the final product in addition to white ti(IV)oxide and disordered carbons after the complete oxidation of ti_(3)C_(2)t_(x).this work presents significant advancements in better understanding of 2D ti_(3)C_(2)t_(x)(MXene)oxidation and enhances the prospects of this material for various applications.

关键词： 2D materials MXene Chemical degradation Catalysis Hydrogen evolution reaction

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Inflow and outflow permeability tests in a very soft clay under low stresses

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第8期16卷 3270-3283页

作者： J.W.S.Vargas F.A.B.Danziger F.R.Lopes t.Lunne Federal University of Rio de Janeiro Rio de JaneiroBrazil Norwegian Geotechnical Institute OsloNorway

In situ inflow and outflow permeability tests with the bat probe at SarapuíII soft clay test site are presented.A description of the bat permeability test is provided,discussing its advantages and shortcomings,especially in the case of very soft clays under low *** pressures were monitored during probe installation and were found to be slightly lower than piezocone u2 pore pressures,consistent with the position of the *** role of filter tip saturation was investigated after the usual saturation procedure provided an unsatisfactory pore pressure response during probe *** show that the vacuum saturation procedure provides adequate response during installation and increases the reliability of the coefficient of permeability determination in early *** inflow and outflow tests yielded similar results,indicating that careful execution of the test can lead to good test repeatability regardless of the loading *** sequences of alternated inflow and outflow tests have yielded similar results,indicating that soil reconsolidation and filter clogging were negligible in the tests *** are presented concerning the relationship between index parameters and the in situ coefficient of permeability for SarapuíII clay,which plot outside the range of existing databases.

关键词： Permeability test Soft clay bat probe Inflow and outflow tests

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Rice-wheat comparative genomics:Gains and gaps

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the Crop Journal 2024年第3期12卷 656-669页

作者： Akila Wijerathna-Yapa Ruchi Bishnoi Buddhini Ranawaka Manu Maya Magar Hafeez Ur Rehman Swati G.Bharad Michal t.Lorenc Vinita Ramtekey Sasha Gohar Charu Lata Md.Harun-Or-Rashid Maryam Razzaq Muhammad Sajjad Bhoja *** School of Agriculture and Food Sustainability The University of QueenslandSt LuciaQLD 4072Australia ARC Centre of Excellence for Plant Success in Nature and Agriculture The University of QueenslandSt LuciaQLD 4072Australia Department of Genetics and Plant Breeding College of AgricultureUmmedganj-KotaAgriculture UniversityKotaRajasthan 324001India Centre for Agriculture and the Bioeconomy Queensland University of Technology(QUT)2 George StreetBrisbaneQLD 4000Australia UWA School of Agriculture and Environment The University of Western Australia35 Stirling HighwayCrawleyWA 6009Australia Nepal Agriculture Research Council KhumaltarLalitpurNepal Department of Agronomy University of AgricultureFaisalabad 38040Pakistan Department of Agricultural Botany Dr Panjabrao Deshmukh Krishi VidyapeethAkola 444104MaharashtraIndia ICAR-Indian Institute of Seed Science MauUttar Pradesh 275103India School of Natural Sciences Macquarie UniversityMacquarie ParkNSW 2109Australia ICAR-Indian Institute of Wheat and Barley Research Flowrdale 54642ShimlaIndia International Maize and Wheat Improvement Center(CIMMYt)Bangladesh Office Gulshan-2Dhaka 1212Bangladesh Center for Seed Science University of AgricultureFaisalabad 38000Pakistan Department of Biosciences COMSATS University IslamabadPark RoadTarlai KalanIslamabad 45550Pakistan CGIAR’s Excellence in Breeding(EiB)Platform/Accelerated Breeding Initiative International Maize and Wheat Improvement Center(CIMMYT)El Batán 56237Mexico

Rice and wheat provide nearly 40%of human calorie and protein *** share a common ancestor and belong to the Poaceae(grass)*** their genetic homology is crucial for developing new cultivars with enhanced *** wheat genes and gene families have been characterized based on their rice ***–wheat orthology can identify genetic regions that regulate similar traits in both ***–wheat comparative genomics can identify candidate wheat genes in a genomic region identified by association or QtL mapping,deduce their putative functions and biochemical pathways,and develop molecular markers for marker-assisted breeding.A knowledge of gene homology facilitates the transfer between crops of genes or genomic regions associated with desirable traits by genetic engineering,gene editing,or wide crossing.

关键词： Comparative genomics Orthologs Genes Synteny Genetic engineering Molecular breeding

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Criterion for reducible hydrodynamic equations of baryon-rich quark-gluon plasma

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Nuclear Science and techniques 2000年第1期11卷 41-44页

作者： AI Xiao-Bai (Hsiao-bat AI) (Center of theoretical Nuclear Physics, National Laboratory of Heavy ion Accelerator, Lanzhou 730000 Shanghai Institule of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800) 兰州原子核理论研究中心重离子加速器国家实验室甘肃兰州 730000

Besides the state equation there exists another cubic algebraic equation about μf in the form of μf3 + pμf + q = 0, which relates parameters, temperature t, chemical potential μf, and net quark number nff （flavor f） for a baryon-rich quark-gluon plasma （QGP）. A criterion may be acquired simply according to Cardan formula of the solution of the above equation, which gives naturally a condition: if n t3/3, one may approximately use the conservation of specific entropy, and then the set of hydrodynamic equation of baryon-rich QGP may be reduced to the set of hydrodynamic equation for baryon-free QGP.

关键词：重子夸克胶子粒子物理学简化流体动力学方程等离子体 QGP

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LA SIStEM AtIKO KAJ FILOGENio DE LA GENRO SINOPHORA MELICHAR (Homopteroj:Afroforedoj)

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Entomotaxonomia 1986年第Z1期 116-119页

作者： Chou io Yuan Feng Liang Aiping(Nordokcidenta Agrikultura Universitato)

5 specioj apartenantaj al 2 subgenroj t. e. Sinophora s. str. kaj Sinaphrade la genro Sinophora estis priskribitaj antaue (L. Malichar 1902, Z. *** kaj G. Horton 1934, S. Matsmura 1942, G. A. Anufriev 1972), elkiuj 4 estis raportitaj et Cinio. En tiu ci artikolo la autoroj pliigas 8 speciojnel Cinio novajn por scienco (Sichuan, Yunnan, Xizang, Shaanxi, Hubei). Lacefaj temoj diskutital en detalo en la cina teksto en tiu ci artikolo estas resu-mataj jene.

关键词： La Homopteroj LA SIStEM AtIKO KAJ FILOGENio DE LA GENRO SINOPHORA MELICHAR DE

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缺血期补充硝酸甘油对离体大鼠心脏心肌缺血再灌注损伤的作用

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中国循环杂志 1999年第4期14卷 242-244页

作者：刘海波 takayuki t su ji Fum io Y am amoto tosh ia Fujisato Hidekazu H irai Fu jio Miyaw aki 中国医学科学院中国协和医科大学心血管病研究所阜外心血管病医院冠心病研究室北京市100037 日本国立循环器病中心

目的：观察离体大鼠心脏缺血期补充一氧化氮（ＮＯ）供体对缺血再灌注损伤的影响。　　方法：将２６只离体大鼠心脏缺血３０分，再灌注６０分。分为两组，用药组（１５只）及对照组（１１只）。用药组于缺血期给予４．４×１０－３ｍ... 详细信息

目的：观察离体大鼠心脏缺血期补充一氧化氮（ＮＯ）供体对缺血再灌注损伤的影响。　　方法：将２６只离体大鼠心脏缺血３０分，再灌注６０分。分为两组，用药组（１５只）及对照组（１１只）。用药组于缺血期给予４．４×１０－３ｍｍｏｌ／Ｌ硝酸甘油（ｎｉｔｒｏｇｌｙｃｅｒｉｎ，ＮＴＧ，一种ＮＯ供体），碳酸氢盐缓冲液灌注。对照组仅给予碳酸氢盐缓冲液灌注。全部心脏均测定ＮＯ释放量、肌酸激酶漏出量及（或）心脏功能。　　结果：用药组大鼠心脏，使用ＮＴＧ表现为两种效应。其中部分大鼠心脏（非心室颤动组，ｎ＝７），ＮＴＧ增加肌酸激酶漏出量，减弱再灌注期心脏功能的恢复，伴随缺血期ＮＯ释放量的增加。对另一部分大鼠心脏（心室颤动组，ｎ＝８），ＮＴＧ减少肌酸激酶的释放，但心脏于再灌注期持续心室颤动，缺血期ＮＯ释放量无明显增加。　　结论：缺血期给予同一剂量ＮＴＧ对心肌缺血再灌注损伤产生双重效应，既可增加心肌损伤，又可减轻心肌损伤。

关键词：一氧化氮硝酸甘油心肌缺血再灌注损伤

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Responses to LPS boost effector CD8 t-cell accumulation ）utside of signals 1 and 2

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Cellular & Molecular Immunology 2017年第3期14卷 254-264页

作者： Wenhai Liu Antoine Menoret Anthony t. Vella Department of Immunology School of Medicine University of Connecticut Health Center Farmington CT 06030 USA

Immunization with adjuvant plus antigen induces durable t-cell immunity and is a mainstay of vaccines. Here, the consequence of separating antigen stimulation of t cells from the adjuvant response was studied in a re-transfer model. Effector CD8 t cells in recipient mice were exposed to lipopolysaccharide （LPS）, the toll-like receptor 4 （tLR4） ligand, which significantly increased persistence. While accumulation in lymphoid and non-lymphoid organs was evident, this result depended upon the timing of LPS administration and the presence of the tLR4 adaptor tRIF in the recipient mice. Interestingly, there was very little impact of the LPS response on subset differentiation, which rather appeared to be programmed by antigen and costimulation. to discern factors that limit accumulation, interleukin 10 （IL-io） was targeted since it is a product of tLR4 triggering and mitigates inflammation. Blockade of IL-io increased accumulation even though the effector CD8 t cells were well past the priming phase, but upon recall interferon-y secretion was not affected as would be expected when IL-io is present during priming. thus, the adjuvant-altered microenvironment is effective not only in the presence of antigen but also during a window of effector CD8 t-cell stasis, suggesting that pathogen-associated molecular pattern molecules released during co-infection, ot by vaccines, could alter the survival fate of specific effector t cells.

关键词： adjuvant costimulation cytokine t cell

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钙热还原制备Sm_(2)Co_(17)合金及磁性能研究

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稀土 2023年第4期44卷 202-213,I0007页

作者：刘东辉张小林牛飞杨幼明江西理工大学材料冶金化学学部江西赣州341000 江西理工大学江西省闪速绿色开发与循环利用重点实验室江西赣州341000 离子型稀土资源开发及应用教育部重点实验室江西赣州341000

钙作为还原剂无法直接还原SmF_(3)制备金属钐。本文以无水SmF_(3)为原料,对钴诱导SmF_(3)钙热还原制备Sm_(2)Co_(17)合金进行了热力学计算与实验研究。通过电感耦合等离子体光谱仪、X射线衍射仪、扫描电子显微镜及能谱仪和X射线光电子... 详细信息

钙作为还原剂无法直接还原SmF_(3)制备金属钐。本文以无水SmF_(3)为原料,对钴诱导SmF_(3)钙热还原制备Sm_(2)Co_(17)合金进行了热力学计算与实验研究。通过电感耦合等离子体光谱仪、X射线衍射仪、扫描电子显微镜及能谱仪和X射线光电子能谱仪等测试方法对合金产物的化学组成、结构、形貌、元素分布和化学价态等进行了分析与表征。结果表明:钴诱导SmF_(3)钙热还原制备Sm_(2)Co_(17)合金在热力学上是可行的,还原产物为Sm_(2)Co_(17)合金与CaF_(2)。当SmF_(3)与Ca用量分别为摩尔比1.1与1.2,保温时间30 s时,获得合金产物中钐质量分数为22.98%,与Sm_(2)Co_(17)合金的理论成分几乎相同。铸态合金产物主要由th_(2)Zn_(17)结构的2∶17相及CaCu_(5)结构的1∶5相组成。结合电负性原理与XPS分析结果研究了制备Sm_(2)Co_(17)合金的钴诱导机理。Sm_(2)Co_(17)合金快淬带的剩余磁化强度为0.47 t,内禀矫顽力为0.45 kA·m^(-1),最大磁能积为5.23 kJ·m^(-3)。与传统混熔工艺相比,此工艺在每生产一吨Sm_(2)Co_(17)合金中,金属钐制备成本节省约40%。该方法制备的钐钴合金可作为烧结稀土钐钴永磁材料的原料。

关键词：氟化钐 Sm_(2)Co_(17) 钙热还原诱导机理磁性能

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Dynamic mechanical relaxation behavior of Zr_(35)Hf_(17.5)ti_(5.5)Al_(12.5)Co_(7.5)Ni_(12)Cu_(10)high entropy bulk metallic glass

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Journal of Materials Science & technology 2021年第24期83卷 248-255页

作者： L.t.Zhang Y.J.Duan t.Wada H.Kato J.M.Pelletier D.Crespo E.Pineda J.C.Qiao School of Mechanics Civil Engineering and ArchitectureNorthwestern Polytechnical UniversityXi’an710072China Institute for Materials Research Tohoku UniversitySendai980-8577Japan Universitéde Lyon MATEISUMR CNRS5510Bat.B.PascalINSA-LyonF-69621Villeurbanne CedexFrance Department of Physics Barcelona Research Center in Multiscale Science and TechnologyInstitute of Energy TechnologiesUniversitat Politècnica de Catalunya08019BarcelonaSpain

Non-equiatomic high entropy bulk metallic glasses were reported recently and show unique mechanical and physical *** mechanical relaxation behavior of Zr_(35)Hf_(17.5)ti_(5.5)Al_(12.5)Co_(7.5)Ni_(12)Cu_(10)high entropy bulk metallic glass was investigated by dynamic mechanical analysis(DMA)and the mechanical spectra could be well described by the quasi-point defects(QPD)*** to typical metallic glasses,the intensity of theβrelaxation of Zr_(35)Hf_(17.5)ti_(5.5)Al_(12.5)Co_(7.5)Ni_(12)Cu_(10)high entropy bulk metallic glass is lower due to the sluggish *** the same time,the correlation factor is higher than that of conventional metallic glasses and this is ascribed to the high configuration *** parallel,physical aging below the glass transition temperature leads to a decrease of atomic mobility,caused by a decrease of the concentration of defects.

关键词： High entropy bulk metallic glass Mechanical relaxation Quasi-point defects Physical aging

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