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Preparation and characterization of a novel activated carbon from wheat dust and its adsorption mechanism for tetracycline hydrochloride

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Particuology 2025年第2期97卷 12-24页

作者： Hailong Fu Xue Song Yongde Liu Jie Zhang Jihong Zhao Feiyue Wang Zeying Zhang Zengchen Su Han Zhang College of Environmental Engineering Henan University of TechnologyZhengzhouHenan450001China Zhengzhou Key Laboratory of Organic Waste Resource Utilization ZhengzhouHenan450001China College of Food Science and Engineering Henan University of TechnologyZhengzhouHenan450001China Henan Open University ZhengzhouHenan450001China College of Civil Engineering and Architecture Henan University of TechnologyZhengzhouHenan450001China

In this study, a method for preparing activated carbon (AC) from wheat dust (WD) was developed to achieve efficient removal of tetracycline hydrochloride (TCH). The AC, prepared through response surface methodology with a carbonization temperature of 590℃, a NaOH to WD ratio of 4:1, and an activation temperature of 800℃, exhibited a high specific surface area of 2821.58 m^(2)/g. It demonstrated a remarkable TCH removal capacity of 1414.65 mg/g in aqueous solution. The AC retained an adsorption capacity of 1035.36 mg/g after five cycles and maintained over 80% of its adsorption capacity in different water bodies. The adsorption of TCH by AC, primarily controlled by surface sites through chemical and physical interactions, involved mechanisms such as pore-filling, electrostatic interactions, hydrogen bonding, π-cation interactions, and π-π interactions. This study highlights the potential of WD in preparing effective adsorbents, providing valuable insights for the comprehensive utilization of similar byproducts.

关键词： Adsorption Wheat dust Activated carbon Response surface methodology Tetracycline hydrochloride

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Intelligent building design based on green and low-carbon concept

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Energy Informatics 2025年第1期8卷 1-18页

作者： Lv, Qian Intelligent Construction Technology Application Service Center School of Architecture and Engineering Chongqing City Vocational College Chongqing402160 China

The integration of modern technology and architectural design in intelligent buildings has led to advancements in functionality and user experience. These developments have also contributed to the pursuit of environmental sustainability, energy conservation, and emission reduction through the implementation of advanced technological systems. Guided by the concept of green and low-carbon, intelligent building design emphasizes the full utilization of renewable energy while utilizing advanced algorithms to optimize energy scheduling in intelligent buildings, achieving green, low-carbon, energy-saving, and emission-reduction goals. Therefore, based on the concept of green and low-carbon, this study optimizes the renewable energy system, lighting control system, elevator control system, and air conditioning control system of intelligent buildings. The experimental findings, utilizing a paradigmatic intelligent office building in Shanghai as a case study, demonstrated that the solar wind complementary power generation system of the building attained an annual power generation of 609,380 kWh. This amount satisfied 60% of the building's electricity requirement, thereby signifying a substantial breakthrough in conventional building energy supply methodologies. The lighting system adopted intelligent time lighting dual-mode control, reducing energy consumption by 10.1%. The optimization of the elevator group control algorithm could achieve an average monthly power saving of 6100 kWh. The air conditioning system reduced energy consumption by 7238 kWh/month through a load forecasting model. The results showed that the intelligent building energy optimization system established in the study, through multi-system algorithm linkage, improved overall energy efficiency by 23% compared to traditional solutions. This method provides a reusable technical paradigm for smart city emission reduction. © The Author(s) 2025.

关键词： Architectural design

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Single and multi-response optimisations of EDM parameters for processing of hybrid Al/(SiC + ZrO2 + NiTi)–MMC

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International Journal of Machining and Machinability of Materials 2024年第3-4期25卷 243-265页

作者： Maurya, Saurabh Kumar Pramanik, Sayon Manna, Alakesh Department of Mechanical Engineering Punjab Engineering College Deemed to be University Chandigarh India Department of Architecture National Institute of Technology Chhattisgarh Raipur India

This paper presents the experimentally investigated results during fabrication and processing via electrical discharge machining (EDM) of hybrid Al/(SiC + ZrO2 + NiTi)-MMC. Preliminary experiments were performed to disclose the operative parameters and their range for effective machining. Detail experiments were carried out based on Taguchi’s L18 (21 x 37) mixed orthogonal array. The single and multi-response optimisations were performed using Taguchi and grey relational analysis (GRA) approach. Proposed appropriate mathematical relation for material removal rate (MRR), tool wear rate (TWR) and surface roughness heights (SRHs: Ra and Rt) were used to set the parameters and predict expected output in advance. The confirmation test results reveal that the improvement of responses by parametric optimisation are 58.89% in MRR, –49.48% in TWR, 16% and 9.89% in SRHs. This paper explained the combined effect of process parameters on the output characteristics through different 3D graphs. SEM analysis gives the actual condition of the machined surface and recast layer formed. Copyright © 2023 Inderscience Enterprises Ltd.

关键词： Silicon carbide

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Inner damage identification and residual strength assessment of a 3D printed tunnel with marble-like cementitious materials using piezoelectric transducers

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Journal of Rock Mechanics and Geotechnical engineering 2023年第4期15卷 838-851页

作者： Guowei Ma Chen Huang Junfei Zhang School of Civil and Transportation Engineering Hebei University of TechnologyTianjin300401China College of Architecture and Civil Engineering Beijing University of TechnologyBeijing100124China

Quantitative damage identification of surrounding rock is important to assess the current condition and residual strength of underground *** this work,an underground tunnel model with marble-like cementitious materials was first fabricated using the three-dimensional(3D)printing technique and then loaded to simulate its failure mode in the *** zirconate titanate piezoelectric(PZT)transducers were embedded in the surrounding rock around the tunnel in the process of 3D printing.A 3D monitoring network was formed to locate damage areas and evaluate damage extent during *** show that as the load increased,main cracks firstly appeared above the tunnel roof and below the floor,and then they coalesced into the tunnel ***,the tunnel model was broken into several *** resonant frequency and the peak of the conductance signature firstly shifted rightwards with loading due to the sealing of microcracks,and then shifted backwards after new cracks *** overall increase in the root-mean-square deviation(RMSD)calculated from conductance signatures of all the PZT transducers was observed as the load(damage)***-dependent equivalent stiffness parameters(ESPs)were calculated from the real and imaginary signatures of each PZT at different damage *** agreement between equivalent and experimental ESP values was ***,the relationship between the change of the ESP and the residual strength was *** method paves the way for damage identification and residual strength estimation of other 3D printed structures in civil engineering.

关键词： Piezoelectric(PZT)transducers Three-dimensional(3D)printed tunnel Electro-mechanical impedance(EMI) method Equivalent stiffness parameter(ESP) Residual strength

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A Deep Learning Approach to Shape Optimization Problems for Flexoelectric Materials Using the Isogeometric Finite Element Method

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Computer Modeling in engineering & Sciences 2024年第5期139卷 1935-1960页

作者： Yu Cheng Yajun Huang Shuai Li Zhongbin Zhou Xiaohui Yuan Yanming Xu College of Architecture and Civil Engineering Xinyang Normal UniversityXinyang464000China Henan Unsaturated Soil and Special Soil Engineering Technology Research Center Xinyang Normal UniversityXinyang464000China College of Intelligent Construction Wuchang University of TechnologyWuhan430223China College of Civil Engineering and Architecture Dalian UniversityDalian116622China Henan International Joint Laboratory of Structural Mechanics and Computational Simulation School of Architecture and Civil EngineeringHuanghuai UniversityZhumadian463000China

A new approach for flexoelectricmaterial shape optimization is proposed in this *** this work,a proxymodel based on artificial neural network(ANN)is used to solve the parameter optimization and shape optimization *** improve the fitting ability of the neural network,we use the idea of pre-training to determine the structure of the neural network and combine different optimizers for *** isogeometric analysis-finite element method(IGA-FEM)is used to discretize the flexural theoretical formulas and obtain samples,which helps ANN to build a proxy model from the model shape to the target *** effectiveness of the proposed method is verified through two numerical examples of parameter optimization and one numerical example of shape optimization.

关键词： Shape optimization deep learning flexoelectric structure finite element method isogeometric

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Effect of Sintering Temperature on Properties of Regenerated Sintered Sheet Brick 2nd

Effect of Sintering Temperature on Properties of Regenerated...

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2nd International Conference on Green Building, Civil engineering and Smart City, GBCESC 2023

作者： Huang, Bing-zhang Li, Guang-feng Pan, Li-hua Zhang, Yu Huang, Bang-biao College of Civil Engineering and Architecture Liuzhou Institute of Technology Liuzhou545616 China College of Civil Engineering and Architecture Guangxi University of Science and Technology Liuzhou545006 China

ISBN: (纸本)9789819999460

In order to study the effect of sintering temperature on the performance of recycled shale bricks, in this paper, a total of 8 groups of mix proportions were designed by changing the proportion of shale, waste shale brick powder, and waste concrete powder to prepare recycled sintered shale bricks. The sintering temperature was increased at a rate of 1 ℃/min to 900 ℃–1000 ℃, and performance tests were conducted with the requirements of the "Test Methods for Wall Building Bricks" (GB/T 2542–2012). Results of test indicate that when the sintering temperature of the brick is 1050 ℃, the minimum amount of waste mixture can be used to produce regenerated sintered shale bricks with excellent strength and density. By reducing the sintering temperature and increasing the content of waste mixture, the thermal conductivity of recycled sintered bricks can be improved. In practical applications, waste mixtures can be added and the sintering temperature can be adjusted according to actual engineering requirements to further encourage the recycling and utilization of construction waste. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd 2024.

关键词： Brick

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Helical particle manipulation based on power-exponent-phase acoustic vortices generated by a sector transducer array

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Chinese Physics B 2023年第6期32卷 333-341页

作者：王青东胡彦涛王胜利李洪宇 College of Ocean Science and Engineering Shandong University of Science and TechnologyQingdao 266590China Department of Modern Architecture Linyi Vocational CollegeLinyi 276017China

The characteristics of traditional acoustic vortices(AVs) were verified by the cross-sectional axisymmetric pressure distributions with perfect phase spirals around the center pressure null. In order to generate a non-axisymmetric pressure distribution, the concept of power-exponent-phase was first introduced into the formation of AV beams, named “powerexponent-phase acoustic vortices(PAVs)” in this paper. Based on a ring-array of sector transducers, the helical distribution of the low-pressure valley in cross-sections of PAVs, which enables particles to move from a distant position to the center low-potential well along a certain spiral passageway, was proved theoretically. The particle manipulation behavior for PAVs with a power order of 2 is numerically modeled and experimentally confirmed. The results show that PAVs with a nonaxisymmetric spiral pressure distribution can be used to realize the directional transport of particles in an enlarged scope,suggesting prospective application potential in biomedical engineering.

关键词： acoustic vortices power-exponent-phase spiral potential well sector transducer array particle manipulation

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Dynamic soil arching in piled embankment under train load of high-speed railways

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Earthquake engineering and engineering Vibration 2023年第3期22卷 719-730页

作者： Niu Tingting Yang Yule Ma Qianli Zou Jiuqun Lin Bin School of Civil Engineering and Architecture Anhui University of Science and TechnologyHuainan 232001China College of Civil and Transportation Engineering Hohai UniversityNanjing 210098China

Piled embankments have many advantages that have been applied in high-speed railway construction ***,the load transfer mechanism of piled embankments,such as soil arching and tension membranes,is still unclear,especially under dynamic *** investigate the soil arching and tension membrane under dynamic train loads on high-speed railways,a large-scale piled embankment model test with X-shaped piles as vertical reinforcement was performed,in which twenty-eight earth pressure cells were installed in the piled embankment and an M-shaped wave was adopted to simulate the high-speed railway train *** results show that dynamic soil arching only occurs when two bogies of a carriage pass by and disappears at other *** dynamic soil arching and membrane effect are the most significant under the concrete *** arching height,stress concentration ratio and pile-soil load sharing ratio have a minimal value at 25 *** dynamic soil arching degrades severely at 25 Hz,whose height at 25 Hz is only 0.35 times that at 5 *** arching height fluctuates over a narrow range with increasing loading *** stress concentration ratio and the pile-soil load sharing ratio increase monotonically as the loading amplitude increases.

关键词： dynamic soil arching membrane effect piled embankment train load model test

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Preparation of High Activity Admixture from Steel Slag,Phosphate Slag and Limestone Powder

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Journal of Renewable Materials 2023年第11期11卷 3977-3989页

作者： Ying Ji Xi Liu College of Materials Science and Engineering Xi’an University of Architecture&TechnologyXi’an710055China

The problem of low disposal and utilization rate of bulk industrial solid waste needs to be *** this paper,a high-activity admixture composed of steel slag-phosphate slag-limestone powder was proposed for most of the solid waste with low activity and a negative impact on concrete workability,combining the characteristics of each solid *** paper demonstrates the feasibility and explains the principle of the composite system in terms of water requirement of standard consistency,setting time,workability,and mechanical properties,combined with the composition of the phases,hydration temperature,and microscopic *** results showed that the steel slag:phosphate slag:limestone=5:2:3 gave the highest activity of the composite system,over 92%.Besides,the composite system had no significant effect on water demand and setting time compared to cement,and it could significantly increase the 7 and 28 d activity of the *** composite system delayed the exothermic hydration of the cement and reduced the exothermic heat but had no effect on the hydration ***,the research in this paper dramatically improved the solid waste dissipation in concrete,reduced the amount of cement in concrete and positively responded to the national slogan of carbon neutral and peaking.

关键词： Steel slag phosphorus slag limestone powder high activity admixture solid waste

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Effect of CSH Crystal Nucleus on Steam-Free Cured Fly Ash Precast Concrete Components

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Journal of Renewable Materials 2023年第9期11卷 3485-3500页

作者： Ruyi Luo Yanyan Hu Tingshu He Xiaodong Ma Yongdong Xu College of Materials Science and Engineering Xi’an University of Architecture&TechnologyXi’an710055China

The measures of steam curing and early-strengthening agents to promote the precast components to reach the target strength quickly can bring different degrees of damage to the *** on this,the new nanomaterial CSH-the hydration product of cement effectively solves these measures’disadvantages,such as excessive energy consumption,thermal stress damage,and the introduction of external *** this paper,the effect of CSH on the early strength of precast fly ash concrete components was investigated in terms of setting time,workability,and mechanical properties and analyzed at the microscopic level using hydration temperature,XRD,and *** results showed that under the same workability,CSH could significantly reduce the amount of admixture,shorten the final setting time,almost not affect the initial setting time,and accelerate the hydration of *** the optimum dose of 5%,the mechanical properties of the specimens were improved by more than 98%within 12 h of hydration,resulting in an earlier release time of 12 h and no risk of strength inversion *** results of this paper give theoretical support to the behavior of precast components under steam-free curing.

关键词： Fly ash concrete prefabricated components steam-free curing CSH crystal nucleus tobermorite

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