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Prediction of geopolymer Concrete Compressive strength Using Convolutional Neural Networks

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Computer Modeling in Engineering & sciences 2024年第5期139卷 1455-1486页

作者： Kolli Ramujee Pooja sadula Golla Madhu sandeep Kautish Abdulaziz s.Almazyad Guojiang Xiong Ali Wagdy Mohamed Department of Civil Engineering VNR Vignana Jyothi Institute of Engineering and TechnologyHyderabadTelangana500090India Department of Information Technology VNR Vignana Jyothi Institute of Engineering and TechnologyHyderabadTelangana500090India Department of Computer science LBEF Campus(Asia Pacific University of Technology&InnovationMalaysia)Kathmandu44600Nepal Department of Computer Engineering College of Computer and Information SciencesKing Saud UniversityP.O.Box 51178Riyadh11543Saudi Arabia Guizhou Key Laboratory of Intelligent Technology in Power system College of Electrical EngineeringGuizhou UniversityGuiyang550025China Operations Research Department Faculty of Graduate Studies for Statistical ResearchCairo UniversityGiza12613Egypt Applied science Research Center Applied Science Private UniversityAmmanJordan

geopolymer concrete emerges as a promising avenue for sustainable development and offers an effective solution to environmental *** attributes as a non-toxic,low-carbon,and economical substitute for conventional cement concrete,coupled with its elevated compressive strength and reduced shrinkage properties,position it as a pivotal material for diverse applications spanning from architectural structures to transportation *** this context,this study sets out the task of using machine learning(ML)algorithms to increase the accuracy and interpretability of predicting the compressive strength of geopolymer concrete in the civil engineering *** achieve this goal,a new approach using convolutional neural networks(CNNs)has been *** study focuses on creating a comprehensive dataset consisting of compositional and strength parameters of 162 geopolymer concrete mixes,all containing Class F fly *** selection of optimal input parameters is guided by two distinct *** first criterion leverages insights garnered from previous research on the influence of individual features on compressive *** second criterion scrutinizes the impact of these features within the model’s predictive *** to enhancing the CNN model’s performance is the meticulous determination of the optimal *** a systematic trial-and-error process,the study ascertains the ideal number of epochs for data division and the optimal value of k for k-fold cross-validation—a technique vital to the model’s *** model’s predictive prowess is rigorously assessed via a suite of performance metrics and comprehensive score ***,the model’s adaptability is gauged by integrating a secondary dataset into its predictive framework,facilitating a comparative evaluation against conventional prediction *** unravel the intricacies of the CNN model’s learning trajectory,a loss plot is deployed to elucidate its learning rat

关键词： Class F fly ash compressive strength geopolymer concrete prediction deep learning convolutional neural network

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茶叶样品中绿原酸含量的高效液相色谱法测定

分析测试学报 2001年第1期20卷 76-78页

作者：王丽帅琴汤志勇金泽祥中国地质大学材料科学与化学工程学院湖北武汉430074

建立了茶叶中绿原酸含量测定的反相高效液相色谱法。采用PecosphereC18 柱 ,以甲醇 -水(体积比18∶20,水中含 φ=1/61的甲酸)淋洗 ,用紫外检测器于326nm处测定 ,各组分的色谱峰达到基线分离。绿原酸在0.02～4.02μg范围内线性关系良好 ... 详细信息

建立了茶叶中绿原酸含量测定的反相高效液相色谱法。采用PecosphereC18 柱 ,以甲醇 -水(体积比18∶20,水中含 φ=1/61的甲酸)淋洗 ,用紫外检测器于326nm处测定 ,各组分的色谱峰达到基线分离。绿原酸在0.02～4.02μg范围内线性关系良好 ,线性相关系数r=0.9996。在安徽黄山产贡菊和安徽产金银花中加标的回收率分别为86.8 %、102.0% ,该法已用于十多种茶叶实际样品的测定。

关键词：茶叶绿原酸高效液相色谱法含量测定

surface tension of liquid Au-Bi-sn alloys

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Rare Metals 2012年第3期31卷 250-254页

作者： Guo, Zhongnan Li, shan Mikula, Adolf Yuan, Wenxia Department of Chemistry School of Chemical and Biological Engineering University of Science and Technology Beijing Beijing 100083 China Institute of Inorganic Chemistry/material Chemistry University of Vienna A-1090 Vienna Austria

The surface tension of a promising lead-free solder Au-Bi-sn alloys was investigated both by the sessile-drop method and calculation. Experimental measurements were carried out for two cross-sections with the constant gold to bismuth ration of 1:1 and 1:2. For all the investigated compositions, decrease of the surface tension is observed with increasing temperature. Meanwhile, the surface tension values were also calculated based on Butler’s equation, with using the newest research on thermodynamics data of Au-Bi-sn ternary system. Compared with the experimental results, a good agreement was obtained.

关键词： sessile-drop method Au-Bi-sn alloys density surface tension Butler’s equation

synergistic Co-doping effect of CNTs and PVP in Na_(4.MnCr(PO_(4.)3 cathode as a strategy for improving the electrochemical performance of sIBs

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Chinese chemical Letters 2024年第2期35卷 539-543页

作者： Ruoyu Chen Denys s.Butenko shilin Li Xinyu Zhang Guangshe Li Igor V.Zatovsky Wei Han College of Physics State Key Laboratory of Inorganic Synthesis and Preparative ChemistryInternational Center of Future ScienceJilin UniversityChangchun 130012China Academy for Advanced Interdisciplinary studies Southern University of Science and TechnologyShenzhen 518055China state Key Laboratory of Inorganic synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China F.D.Ovcharenko Institute of Biocolloidal Chemistry NAS UkraineKyiv 03142Ukraine

In order to solve the contradiction between the rapidly growing energy demand and the excessive exploitation of fossil fuels,it is urgent to research and develops more environmentally friendly and efficient energy storage ***,the development of high-performance cathode materials to enhance the energy density of sIB is currently one of the most important topics of scientific *** high-voltage and low-cost cathode material for sIBs,a composite of carbon-coated Na_(4.MnCr(PO_(4.)_(3)(NAsICON-type),polyvinylpyrrolidone(PVP),and modified carbon nanotubes(CNTs)is prepared by sol-gel and freeze-drying *** to the high conductivity of CNTs,the conductivity of the composite is significantly improved,and its initial capacity is increased to 114.mAh/g at 0.5 C and 96 mAh/g at 5 C(Mn^(2+)/Mn^(4.)conversion for voltage windows 1.4.4.3 V).Moreover,the multi-electrons transfer of Cr^(3+)/Cr^(4.) and Mn^(2+)/Mn^(4.) can provide a high capacity of 165 mAh/g at 0.1 C and 102 mAh/g at 5 C in the high voltage window of 1.4.4.6 ***,PVP can effectively inhibit the Jahn-Teller effect caused by Mn ion,making the composite have more excellent high-rate performance and *** addition,GITT,EIs and CV curves were drawn to better reveal the excellent kinetic properties of Na_(4.MnCr(PO_(4.)_(3)@C@PVP@CNT cathode,and the mechanism of its performance improvement is deeply studied and ***,the co-doping of CNTs and PVP is a simple way to high conductivity and fast charging of cathode materials for sIBs.

关键词： sodium-ion batteries Na_(4.MnCr(PO_(4.)_(3) Carbon nanotubes Polyvinylpyrrolidone synergistic effect

Current Issues in Lactation:Advantages,Environment,silicone

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Biomedical and Environmental sciences 1994年第4期7卷 307-319页

作者： s. KACEW(Department of Pharmacology, university of Ottawa, faculty of Medicine, Ottawa, Ontario, Canada) Department of Pharmacology University of Ottawa Faculty of Medicine Ontario Canada.

The physiological process of breast-feeding should be encouraged under most circumstances despite the presence of trace amounts of environmentaI toxins. The decision for the initiation and continuation of lactation must involve the expectant father, especially in the provision of knowledge by clinicians of the beneficiaI effects to infant and *** that growth patterns of breast-fed infants differ from formula-feeding is essential in the interpretation of toxicity and not an indicator to terminate *** studies demonstrate the importance of breast-feeding in providing protection against various diseases and decreasing the incidence of infant morbidity and *** material such as silicone or environmental toxins including organophosphate pesticides, chlorinated hydrocarbons, solvents, and heavy metals have been identified in human milk. Toxic manifestations were reported in suckling infants exposed to mammary chemicals. The observed adverse reactions were suggested to be due to either (I) a direct action of the chemical without any maternal dietary deficiency, (2) a combination of essential mother nutrient deficiency and excess toxicant in breast milk; or (3) the presence of several toxicants in human milk acting in conjunction as bioactivators or promoters of toxicity. In weighing the risks vs benefits of lactation there is a clear consensus that even in the presence of mammary toxicants, breast-feeding should be promoted and maintained

关键词： Br In Current Issues in Lactation

material Flow Optimization for Make-to-stock Production system

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厦门大学学报（自然科学版） 2002年第S1期41卷 232-233页

作者： ZHANG Bi-xi, ZHAO Wei, LIAO Zhao-hui, WANG Jun (Economic Management faculty, Guangdong university of Technology, Gua ngzhou 510090, china)

Under the condition of the market competition becom in g more and more drastic, the demands of market take on some new features such as individuation, diversification, small batch, unstableness and quick delivery et c. The Make-to-stock mode is usually adopted by many enterprises to improve th e balance and stableness of production process. In such enterprises, order batch , production batch and sales batch are the important factors, which affect the s atisfaction of clients, efficiency and benefit of the enterprise. It takes purch ase, production and sales into account respectively when optimizing product batc h in traditional way. However, it ignored the influences of relations between ea ch links of whole system. It is assumed that the consumption and market demand a re continuous process whereas the factual demands are batched when economic batc h is determined. so there exist some deviations between the economic batch deter mined by traditional way and that by integral optimization. Through the integral analysis of Logistics in the production system, we know that from materials are purchased, then manufactured, finally sold, the material changed in appearance and value, it still exist in different links of production system. The amount of materials occupied varies just in different status, from stock status to produc tion status, then to waiting-be-sold status, there is not any substantial chan ge in quantity until they are sold. so we must comprehensively analyze the relat ions among each link based on integral production system, to optimize the materi al batch and cut short production cycle in order to optimize the whole system. In this paper, the production system is taken as a global entity, and in which m aterials variation law and their relations of each link are analyzed; To optimiz e the whole materials flow, a new model of multi-product systems’ economic orde r batch, economic production batch and optimal sale lot multi-product syste ms’ is developed w

关键词： discrete production system economic order quanti ty economic production quantity distribution batch size

Computing Pressure Drop of Cyclone Operated at Various Dust Loading,Temperature and Pressure Conditions

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Computing Pressure Drop of Cyclone Operated at Various Dust ...

Main chemical ingredients of the celadon glaze from Qingliangsi kiln and Zhanggongxiang kiln

中国颗粒学会第六届学术年会暨海峡两岸颗粒技术研讨会

作者： Gujun Wan Guogang sun Cuizhi Gao Mingxian shi (faculty of chemical science and Engineering china university of Petroleum Beijing 10224. china) faculty of chemical science and Engineering China University of PetroleumBeijingl02249China

＜正＞In this paper,Pressure drop of cyclone under severe operating conditions has been numerically simulated on the platform of commercial computational fluid dynamics（CFD） software package,FLUENT *** of the cyclone pressure drop with operational temperature,pressure and dust loadings are numerially examined with a wide variety of magnitudes,and a pressure drop coefficient correlation,which includes cyclone’s structural and operational parameters,is *** comparison between the experimental data and calculations shows that present correlation formula is more suitable for calculating the pressure drop of cyclones operated at high temperature,high pressure and high dust loadings conditions.

关键词： cyclone temperature pressure particle volume fraction pressure drop

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science china(Physics,Mechanics & Astronomy) 2006年第4期49卷 487-495页

作者： ZHAO Weijuan1, LU Xiaoke1, LI Guoxia1, GUO Min1, XIE Jianzhong1, GAO Zhengyao1, sUN Xinmin2, GUO Musen2, CHENG Huansheng3 & ZHANG Bin3 1. faculty of Physical Engineering, Zhengzhou university, Zhengzhou 4.0052, china 2. Research Institute of Cultural Relic and Archaeology, Henan Province, Zhengzhou 4.0004. china 3. Research Institute of Modern Physics, Fudan university, shanghai 2004.3, china 1. faculty of Physical Engineering Zhengzhou University Zhengzhou 450052 China 2. Research Institute of Cultural Relic and Archaeology Henan Province Zhengzhou 450004 China 3. Research Institute of Modern Physics Fudan University Shanghai 200433 China

The proton induced X-ray emission (PIXE) is used to determine the chemical ingredients of seven main elements in the samples of Ru Guan porcelain glazes and Ru Civil porcelain from Qingliangsi kiln in Baofeng County and the samples of celadon glaze from Zhanggongxiang kiln in Ruzhou City. The PIXE data are then analyzed by scatter analysis and fuzzy cluster method for determining their classification and provenance. The results show that there are obvious differences between the ingredients of glaze material of Ru Guan porcelain and Ru Civil porcelain from Qingliangsi kiln, of which the former ingredients are stable and its source is localized, and that the sources and ingredients of the glaze of Ru Guan porcelain and those of celadon glaze from Zhanggongxiang kiln are not wholly the same, of which the latter sources are much scattering.

关键词： Zhanggongxiang kiln, Qingliangsi kiln, the source of raw material, the proton induced X-ray emission.

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聚氯乙烯接枝丙烯酸稀土的研究

中国稀土学报 2003年第2期21卷 143-146页

作者：张明陈晓松严长浩陈海燕周兰香邱关明冈本弘东北大学材料学院辽宁沈阳110006 扬州大学化学化工学院江苏扬州225002 长春光机学院材料化工系吉林长春130021 日本爱知工业大学应用化学系

将无机稀土有机化后与聚氯乙烯(PVC)进行接枝共聚。探讨了氧化稀土与丙烯酸反应、PVC接枝丙烯酸稀土的原理和方法,并通过红外光谱、扫描电镜对接枝共聚物进行定性表征,用微量热天平对接枝共聚物的热性能进行测定。实验结果表明,经丙烯... 详细信息

将无机稀土有机化后与聚氯乙烯(PVC)进行接枝共聚。探讨了氧化稀土与丙烯酸反应、PVC接枝丙烯酸稀土的原理和方法,并通过红外光谱、扫描电镜对接枝共聚物进行定性表征,用微量热天平对接枝共聚物的热性能进行测定。实验结果表明,经丙烯酸稀土接枝共聚后的PVC,其耐热分解性能和韧性有了明显的提高。

关键词：有机高分子材料丙烯酸稀土接枝共聚聚氯乙烯(PVC) 热稳定性韧性稀土