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He</title> <meta name="description" content="Search results for: Xiaofeng He"> <meta name="keywords" content="Xiaofeng He"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none navbar-toggler ml-auto" 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id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Xiaofeng He"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 14</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Xiaofeng He</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">14</span> Determination of Four Anions in the Ground Layer of Tomb Murals by Ion Chromatography</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Liping%20Qiu">Liping Qiu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Zhang"> Xiaofeng Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The ion chromatography method for the rapid determination of four anions (F⁻、Cl⁻、SO₄²⁻、NO₃⁻) in burial ground poles was optimized. The L₉(₃⁴) orthogonal test was used to determine the optimal parameters of sample pretreatment: accurately weigh 2.000g of sample, add 10mL of ultrapure water, and extract for 40min under the conditions of shaking temperature 40℃ and shaking speed 180 r·min-1. The eluent was 25 mmol/L KOH solution, the analytical column was Ion Pac® AS11-SH (250 mm × 4.0 mm), and the purified filtrate was measured by a conductivity detector. Under this method, the detection limit of each ion is 0.066～0.078mg/kg, the relative standard deviation is 0.86%～2.44% (n=7), and the recovery rate is 94.6～101.9. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ion%20chromatography" title="ion chromatography">ion chromatography</a>, <a href="https://publications.waset.org/abstracts/search?q=tomb" title=" tomb"> tomb</a>, <a href="https://publications.waset.org/abstracts/search?q=anion%20%28F%E2%81%BB" title=" anion (F⁻"> anion (F⁻</a>, <a href="https://publications.waset.org/abstracts/search?q=Cl%E2%81%BB" title=" Cl⁻"> Cl⁻</a>, <a href="https://publications.waset.org/abstracts/search?q=SO%E2%82%84%C2%B2%E2%81%BB" title=" SO₄²⁻"> SO₄²⁻</a>, <a href="https://publications.waset.org/abstracts/search?q=NO%E2%82%83%E2%81%BB%29" title=" NO₃⁻)"> NO₃⁻)</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20protection" title=" environmental protection"> environmental protection</a> </p> <a href="https://publications.waset.org/abstracts/157325/determination-of-four-anions-in-the-ground-layer-of-tomb-murals-by-ion-chromatography" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157325.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">102</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">13</span> A Research Review of Cycling Suitability Assessment for Mountainous Cities</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Fu">Xiaofeng Fu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper begins with the deconstruction of the localization of China's bicycle renaissance. Then think about how to scientifically plan bicycle traffic in a sustainable way in typed cities, especially in mountainous cities, because they need to respond to more serious geographical issues. Therefore, by sorting out the international research on bicycle traffic in mountainous cities, bike-ability is summarized as a prevalent qualitative analysis medium. Then this paper lists the influencing factors of likeability, the general research framework, and responds to the common problem of mountain cities, that is, the treatment of road longitudinal slopes, to assist urban managers in assessing whether the city's complex terrain is suitable for cycling and identifying possible improvements. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=traffic%20planning" title="traffic planning">traffic planning</a>, <a href="https://publications.waset.org/abstracts/search?q=bikeability" title=" bikeability"> bikeability</a>, <a href="https://publications.waset.org/abstracts/search?q=cycling%20suitability" title=" cycling suitability"> cycling suitability</a>, <a href="https://publications.waset.org/abstracts/search?q=mountainous%20cities" title=" mountainous cities"> mountainous cities</a> </p> <a href="https://publications.waset.org/abstracts/167642/a-research-review-of-cycling-suitability-assessment-for-mountainous-cities" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/167642.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">73</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">12</span> Screening of Commonly Used Reinforcement Materials for Tomb Murals</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Liping%20Qiu">Liping Qiu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Zhang"> Xiaofeng Zhang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In its long history, precious tomb murals suffered from various diseases due to natural and man-made destruction. The key to how to protect tomb murals is how to strengthen and protect the tomb murals. In order to maximize the life of the tomb murals, the artistic, historic, and scientific values of the tomb murals can be continued. In this paper, four kinds of traditional reinforcement materials (silicone acrylic lotion, pure acrylic lotion, polyvinyl acetate lotion, and B72) are selected to reinforce the ground support layer of tomb murals, and the reinforcement effect of each reinforcement material on the ground support layer of murals is compared and analyzed, and the best protection material is obtained. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mural" title="mural">mural</a>, <a href="https://publications.waset.org/abstracts/search?q=destruction%20cycle" title=" destruction cycle"> destruction cycle</a>, <a href="https://publications.waset.org/abstracts/search?q=reinforcement%20material" title=" reinforcement material"> reinforcement material</a>, <a href="https://publications.waset.org/abstracts/search?q=disease" title=" disease"> disease</a> </p> <a href="https://publications.waset.org/abstracts/157353/screening-of-commonly-used-reinforcement-materials-for-tomb-murals" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157353.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">133</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">11</span> Mathematical Modeling of the Working Principle of Gravity Gradient Instrument</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Danni%20Cong">Danni Cong</a>, <a href="https://publications.waset.org/abstracts/search?q=Meiping%20Wu"> Meiping Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Hua%20Mu"> Hua Mu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20He"> Xiaofeng He</a>, <a href="https://publications.waset.org/abstracts/search?q=Junxiang%20Lian"> Junxiang Lian</a>, <a href="https://publications.waset.org/abstracts/search?q=Juliang%20Cao"> Juliang Cao</a>, <a href="https://publications.waset.org/abstracts/search?q=Shaokun%20Cai"> Shaokun Cai</a>, <a href="https://publications.waset.org/abstracts/search?q=Hao%20Qin"> Hao Qin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gravity field is of great significance in geoscience, national economy and national security, and gravitational gradient measurement has been extensively studied due to its higher accuracy than gravity measurement. Gravity gradient sensor, being one of core devices of the gravity gradient instrument, plays a key role in measuring accuracy. Therefore, this paper starts from analyzing the working principle of the gravity gradient sensor by Newton’s law, and then considers the relative motion between inertial and non-inertial systems to build a relatively adequate mathematical model, laying a foundation for the measurement error calibration, measurement accuracy improvement. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gravity%20gradient" title="gravity gradient">gravity gradient</a>, <a href="https://publications.waset.org/abstracts/search?q=gravity%20gradient%20sensor" title=" gravity gradient sensor"> gravity gradient sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=accelerometer" title=" accelerometer"> accelerometer</a>, <a href="https://publications.waset.org/abstracts/search?q=single-axis%20rotation%20modulation" title=" single-axis rotation modulation"> single-axis rotation modulation</a> </p> <a href="https://publications.waset.org/abstracts/74776/mathematical-modeling-of-the-working-principle-of-gravity-gradient-instrument" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74776.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">327</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">10</span> Heat and Mass Transfer Study of Supercooled Large Droplet Icing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Du%20Yanxia">Du Yanxia</a>, <a href="https://publications.waset.org/abstracts/search?q=Stephan%20E.%20Bansmer"> Stephan E. Bansmer</a>, <a href="https://publications.waset.org/abstracts/search?q=Gui%20Yewei"> Gui Yewei</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiao%20Guangming"> Xiao Guangming</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Xiaofeng"> Yang Xiaofeng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The heat and mass transfer characteristics of icing coupled with film flow is studied and the coupled model of the thermal behavior with the flow simulation by single-step method is developed. The behavior of ice and water was analyzed. The results show that under supercooled large droplet (SLD) icing conditions, the film flow is an important phonomena in icing accretion process. The pressure gradient, gravity and shear stress are the main factors affecting the film flow on icing surface, which has important influence on the shape and rate of icing. To predict SLD ice accretion accurately, the heat and mass transfer of ice and film flow should be taken into account. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SLD" title="SLD">SLD</a>, <a href="https://publications.waset.org/abstracts/search?q=aircraft" title=" aircraft"> aircraft</a>, <a href="https://publications.waset.org/abstracts/search?q=icing" title=" icing"> icing</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20and%20mass%20transfer" title=" heat and mass transfer"> heat and mass transfer</a> </p> <a href="https://publications.waset.org/abstracts/22845/heat-and-mass-transfer-study-of-supercooled-large-droplet-icing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22845.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">634</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">9</span> Calibration of the Radical Installation Limit Error of the Accelerometer in the Gravity Gradient Instrument</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Danni%20Cong">Danni Cong</a>, <a href="https://publications.waset.org/abstracts/search?q=Meiping%20Wu"> Meiping Wu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20He"> Xiaofeng He</a>, <a href="https://publications.waset.org/abstracts/search?q=Junxiang%20Lian"> Junxiang Lian</a>, <a href="https://publications.waset.org/abstracts/search?q=Juliang%20Cao"> Juliang Cao</a>, <a href="https://publications.waset.org/abstracts/search?q=Shaokuncai"> Shaokuncai</a>, <a href="https://publications.waset.org/abstracts/search?q=Hao%20Qin"> Hao Qin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Gravity gradient instrument (GGI) is the core of the gravity gradiometer, so the structural error of the sensor has a great impact on the measurement results. In order not to affect the aimed measurement accuracy, limit error is required in the installation of the accelerometer. In this paper, based on the established measuring principle model, the radial installation limit error is calibrated, which is taken as an example to provide a method to calculate the other limit error of the installation under the premise of ensuring the accuracy of the measurement result. This method provides the idea for deriving the limit error of the geometry structure of the sensor, laying the foundation for the mechanical precision design and physical design. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gravity%20gradient%20sensor" title="gravity gradient sensor">gravity gradient sensor</a>, <a href="https://publications.waset.org/abstracts/search?q=radial%20installation%20limit%20error" title=" radial installation limit error"> radial installation limit error</a>, <a href="https://publications.waset.org/abstracts/search?q=accelerometer" title=" accelerometer"> accelerometer</a>, <a href="https://publications.waset.org/abstracts/search?q=uniaxial%20rotational%20modulation" title=" uniaxial rotational modulation"> uniaxial rotational modulation</a> </p> <a href="https://publications.waset.org/abstracts/75475/calibration-of-the-radical-installation-limit-error-of-the-accelerometer-in-the-gravity-gradient-instrument" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/75475.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">422</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">8</span> Numerical Study on the Heat Transfer Characteristics of Composite Phase Change Materials</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gui%20Yewei">Gui Yewei</a>, <a href="https://publications.waset.org/abstracts/search?q=Du%20Yanxia"> Du Yanxia</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiao%20Guangming"> Xiao Guangming</a>, <a href="https://publications.waset.org/abstracts/search?q=Liu%20Lei"> Liu Lei</a>, <a href="https://publications.waset.org/abstracts/search?q=Wei%20Dong"> Wei Dong</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Xiaofeng"> Yang Xiaofeng</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A phase change material (PCM) is a substance which absorbs a large amount of energy when undergoing a change of solid-liquid phase. The good physical and chemical properties of C or SiC foam reveal the possibility of using them as a thermal conductivity enhancer for the PCM. C or SiC foam composite PCM has a high effective conductivity and becomes one of the most interesting thermal storage techniques due to its advantage of simplicity and reliability. The paper developed a numerical method to simulate the heat transfer of SiC and C foam composite PCM, a finite volume technique was used to discretize the heat diffusion equation while the phase change process was modeled using the equivalent specific heat method. The effects of the porosity were investigated based on the numerical method, and the effects of the geometric model of the microstructure on the equivalent thermal conductivity was studies. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SiC%20foam" title="SiC foam">SiC foam</a>, <a href="https://publications.waset.org/abstracts/search?q=composite" title=" composite"> composite</a>, <a href="https://publications.waset.org/abstracts/search?q=phase%20change%20material" title=" phase change material"> phase change material</a>, <a href="https://publications.waset.org/abstracts/search?q=heat%20transfer" title=" heat transfer"> heat transfer</a> </p> <a href="https://publications.waset.org/abstracts/22931/numerical-study-on-the-heat-transfer-characteristics-of-composite-phase-change-materials" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22931.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">510</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">7</span> Design of Quality Assessment System for On-Orbit 3D Printing Based on 3D Reconstruction Technology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jianning%20Tang">Jianning Tang</a>, <a href="https://publications.waset.org/abstracts/search?q=Trevor%20Hocksun%20Kwan"> Trevor Hocksun Kwan</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Wu"> Xiaofeng Wu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With the increasing demand for space use in multiple sectors (navigation, telecommunication, imagery, etc.), the deployment and maintenance demand of satellites are growing. Considering the high launching cost and the restrictions on weight and size of the payload when using launch vehicle, the technique of on-orbit manufacturing has obtained more attention because of its significant potential to support future space missions. 3D printing is the most promising manufacturing technology that could be applied in space. However, due to the lack of autonomous quality assessment, the operation of conventional 3D printers still relies on human presence to supervise the printing process. This paper is proposed to develop an automatic 3D reconstruction system aiming at detecting failures on the 3D printed objects through application of point cloud technology. Based on the data obtained from the point cloud, the 3D printer could locate the failure and repair the failure. The system will increase automation and provide 3D printing with more feasibilities for space use without human interference. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=3D%20printing" title="3D printing">3D printing</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20assessment" title=" quality assessment"> quality assessment</a>, <a href="https://publications.waset.org/abstracts/search?q=point%20cloud" title=" point cloud"> point cloud</a>, <a href="https://publications.waset.org/abstracts/search?q=on-orbit%20manufacturing" title=" on-orbit manufacturing"> on-orbit manufacturing</a> </p> <a href="https://publications.waset.org/abstracts/149470/design-of-quality-assessment-system-for-on-orbit-3d-printing-based-on-3d-reconstruction-technology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/149470.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">120</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">6</span> Aerodynamic Prediction and Performance Analysis for Mars Science Laboratory Entry Vehicle</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Tang%20Wei">Tang Wei</a>, <a href="https://publications.waset.org/abstracts/search?q=Yang%20Xiaofeng"> Yang Xiaofeng</a>, <a href="https://publications.waset.org/abstracts/search?q=Gui%20Yewei"> Gui Yewei</a>, <a href="https://publications.waset.org/abstracts/search?q=Du%20Yanxia"> Du Yanxia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Complex lifting entry was selected for precise landing performance during the Mars Science Laboratory entry. This study aims to develop the three-dimensional numerical method for precise computation and the surface panel method for rapid engineering prediction. Detailed flow field analysis for Mars exploration mission was performed by carrying on a series of fully three-dimensional Navier-Stokes computations. The static aerodynamic performance was then discussed, including the surface pressure, lift and drag coefficient, lift-to-drag ratio with the numerical and engineering method. Computation results shown that the shock layer is thin because of lower effective specific heat ratio, and that calculated results from both methods agree well with each other, and is consistent with the reference data. Aerodynamic performance analysis shows that CG location determines trim characteristics and pitch stability, and certain radially and axially shift of the CG location can alter the capsule lifting entry performance, which is of vital significance for the aerodynamic configuration des0ign and inner instrument layout of the Mars entry capsule. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mars%20entry%20capsule" title="Mars entry capsule">Mars entry capsule</a>, <a href="https://publications.waset.org/abstracts/search?q=static%20aerodynamics" title=" static aerodynamics"> static aerodynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics" title=" computational fluid dynamics"> computational fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=hypersonic" title=" hypersonic"> hypersonic</a> </p> <a href="https://publications.waset.org/abstracts/22909/aerodynamic-prediction-and-performance-analysis-for-mars-science-laboratory-entry-vehicle" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/22909.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">299</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">5</span> Adsorption Mechanism of Heavy Metals and Organic Pesticide on Industrial Construction and Demolition Waste and Its Runoff Behaviors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sheng%20Huang">Sheng Huang</a>, <a href="https://publications.waset.org/abstracts/search?q=Xin%20Zhao"> Xin Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Gao"> Xiaofeng Gao</a>, <a href="https://publications.waset.org/abstracts/search?q=Tao%20Zhou"> Tao Zhou</a>, <a href="https://publications.waset.org/abstracts/search?q=Shijin%20Dai"> Shijin Dai</a>, <a href="https://publications.waset.org/abstracts/search?q=Youcai%20Zhao"> Youcai Zhao</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Adsorption of heavy metal pollutants (Zn, Cd, Pb, Cr, Cu) and organic pesticide (phorate, dithiophosphate diethyl, triethyl phosphorothioate), along with their multi-contamination on the surface of industrial construction & demolition waste (C&D waste) was investigated. Brick powder was selected as the appropriate waste while its maximum equilibrium adsorption amount of heavy metal under single controlled contamination matrix reached 5.41, 0.81, 0.45, 1.13 and 0.97 mg/g, respectively. Effects of pH and spiking dose of ICDW was also investigated. Equilibrium adsorption amount of organic pesticide varied from 0.02 to 0.97 mg/g, which was negatively correlated to the size distribution and hydrophilism. Existence of organic pesticide on surface of ICDW caused various effects on the heavy metal adsorption, mainly due to combination of metal ions and the floccule formation along with wrapping behaviors by pesticide pollutants. Adsorption of Zn was sharply decreased from 7.1 to 0.15 mg/g compared with clean ICDW and phorate contaminated ICDW, while that of Pb, Cr and Cd experienced an increase- then decrease procedure. On the other hand, runoff of pesticide contaminants was investigated under 25 mm/h simulated rainfall. Results showed that the cumulative runoff amount fitted well with curve obtained from a power function, of which r2=0.95 and 0.91 for 1DAA (1 day between contamination and runoff) and 7DAA, respectively. This study helps provide evaluation of industrial construction and demolition waste contamination into aquatic systems. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=adsorption%20mechanism" title="adsorption mechanism">adsorption mechanism</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20construction%20waste" title=" industrial construction waste"> industrial construction waste</a>, <a href="https://publications.waset.org/abstracts/search?q=metals" title=" metals"> metals</a>, <a href="https://publications.waset.org/abstracts/search?q=pesticide" title=" pesticide"> pesticide</a>, <a href="https://publications.waset.org/abstracts/search?q=runoff" title=" runoff"> runoff</a> </p> <a href="https://publications.waset.org/abstracts/70934/adsorption-mechanism-of-heavy-metals-and-organic-pesticide-on-industrial-construction-and-demolition-waste-and-its-runoff-behaviors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70934.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">467</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">4</span> Production of Kudzu Starch Gels With Superior Mechanical and Rheological Properties Through Submerged Ethanol Exposure and Implications for in Vitro Digestion</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=John-Nelson%20Ekumah">John-Nelson Ekumah</a>, <a href="https://publications.waset.org/abstracts/search?q=Xu%20Han"> Xu Han</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiufang%20Liang"> Qiufang Liang</a>, <a href="https://publications.waset.org/abstracts/search?q=Benxi%20Wei"> Benxi Wei</a>, <a href="https://publications.waset.org/abstracts/search?q=Arif%20Rashid"> Arif Rashid</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Safiullah"> Muhammad Safiullah</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdul%20Qayum"> Abdul Qayum</a>, <a href="https://publications.waset.org/abstracts/search?q=Selorm%20Yao-Say%20Solomon%20Adade"> Selorm Yao-Say Solomon Adade</a>, <a href="https://publications.waset.org/abstracts/search?q=Nana%20Adwoa%20Nkuma%20Johnson"> Nana Adwoa Nkuma Johnson</a>, <a href="https://publications.waset.org/abstracts/search?q=Abdur%20Rehman"> Abdur Rehman</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Ren"> Xiaofeng Ren</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Producing starch gels with superior mechanical attributes remains a challenging pursuit. This research sought to develop a simple method using ethanol exposure to produce robust starch gels. The gels’ mechanical properties, rheology, structural characteristics, and digestion were assessed through textural, rheological, structural, and in vitro digestion analyses. it investigation revealed an improvement in gel’s strength from 62.22 to178.82 g. The thermal transitions were accelerated when ethanol was elevated. The exposure to ethanol resulted in a reduction in syneresis from 11% to 9.5% over a period of 6 hours with noticeable change in size and color. Rheologically, the dominating storage modulus and tan delta (<0.55) emphasized the gel’s improved elasticity. X-ray analysis showed a stable B + V-type pattern after ethanol exposure, with increasing relative crystallinity to 7.9%. Digestibility revealed an ethanol induced resistance, through increased resistant starch from 1.87 to 8.73%. In general, the exposure to ethanol played a crucial role in enhancing the mechanical characteristics of kudzu starch gels, while simultaneously preserving higher levels of resistant starch fractions. These findings have wide-ranging implications in the fields of food and pharmaceuticals, underscoring the extensive academic and industrial importance of this study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=kudzu%20starch%20gels" title="kudzu starch gels">kudzu starch gels</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=rheological%20properties" title=" rheological properties"> rheological properties</a>, <a href="https://publications.waset.org/abstracts/search?q=submerged%20ethanol%20exposure" title=" submerged ethanol exposure"> submerged ethanol exposure</a>, <a href="https://publications.waset.org/abstracts/search?q=In%20vitro%20digestion" title=" In vitro digestion"> In vitro digestion</a> </p> <a href="https://publications.waset.org/abstracts/188373/production-of-kudzu-starch-gels-with-superior-mechanical-and-rheological-properties-through-submerged-ethanol-exposure-and-implications-for-in-vitro-digestion" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188373.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">38</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3</span> Beam Spatio-Temporal Multiplexing Approach for Improving Control Accuracy of High Contrast Pulse</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ping%20Li">Ping Li</a>, <a href="https://publications.waset.org/abstracts/search?q=Bing%20Feng"> Bing Feng</a>, <a href="https://publications.waset.org/abstracts/search?q=Junpu%20Zhao"> Junpu Zhao</a>, <a href="https://publications.waset.org/abstracts/search?q=Xudong%20Xie"> Xudong Xie</a>, <a href="https://publications.waset.org/abstracts/search?q=Dangpeng%20Xu"> Dangpeng Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Kuixing%20Zheng"> Kuixing Zheng</a>, <a href="https://publications.waset.org/abstracts/search?q=Qihua%20Zhu"> Qihua Zhu</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Wei"> Xiaofeng Wei</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In laser driven inertial confinement fusion (ICF), the control of the temporal shape of the laser pulse is a key point to ensure an optimal interaction of laser-target. One of the main difficulties in controlling the temporal shape is the foot part control accuracy of high contrast pulse. Based on the analysis of pulse perturbation in the process of amplification and frequency conversion in high power lasers, an approach of beam spatio-temporal multiplexing is proposed to improve the control precision of high contrast pulse. In the approach, the foot and peak part of high contrast pulse are controlled independently, which propagate separately in the near field, and combine together in the far field to form the required pulse shape. For high contrast pulse, the beam area ratio of the two parts is optimized, and then beam fluence and intensity of the foot part are increased, which brings great convenience to the control of pulse. Meanwhile, the near field distribution of the two parts is also carefully designed to make sure their F-numbers are the same, which is another important parameter for laser-target interaction. The integrated calculation results show that for a pulse with a contrast of up to 500, the deviation of foot part can be improved from 20% to 5% by using beam spatio-temporal multiplexing approach with beam area ratio of 1/20, which is almost the same as that of peak part. The research results are expected to bring a breakthrough in power balance of high power laser facility. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=inertial%20confinement%20fusion" title="inertial confinement fusion">inertial confinement fusion</a>, <a href="https://publications.waset.org/abstracts/search?q=laser%20pulse%20control" title=" laser pulse control"> laser pulse control</a>, <a href="https://publications.waset.org/abstracts/search?q=beam%20spatio-temporal%20multiplexing" title=" beam spatio-temporal multiplexing"> beam spatio-temporal multiplexing</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20balance" title=" power balance"> power balance</a> </p> <a href="https://publications.waset.org/abstracts/103616/beam-spatio-temporal-multiplexing-approach-for-improving-control-accuracy-of-high-contrast-pulse" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/103616.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">147</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">2</span> Characteristics of Aerosols Properties Over Different Desert-Influenced Aeronet Sites</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Abou%20Bakr%20Merdji">Abou Bakr Merdji</a>, <a href="https://publications.waset.org/abstracts/search?q=Alaa%20Mhawish"> Alaa Mhawish</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Xu"> Xiaofeng Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Chunsong%20Lu"> Chunsong Lu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The characteristics of optical and microphysical properties of aerosols near deserts are analyzed using 11 AErosol RObotic NETwork (AERONET) sites located in 6 major desert areas (the Sahara, Arabia, Thar, Karakum, Taklamakan, and Gobi) between 1998 and 2021. The regional mean of Aerosol Optical Depth (AOD) (coarse AOD (CAOD)) are 0.44 (0.187), 0.38 (0.26), 0.35 (0.24), 0.23 (0.11), 0.20 (0.14), 0.10 (0.05) in the Thar, Arabian, Sahara, Karakum, Taklamakan and Gobi Deserts respectively, while an opposite for AE and Fine Mode Fraction (FMF). Higher extinctions are associated with larger particles (dust) over all the main desert regions. This is shown by the almost inversely proportional variations of AOD and CAOD compared with AE and FMF. Coarse particles contribute the most to the total AOD over the Sahara Desert compared to those in the other deserts all year round. Related to the seasonality of dust events, the maximum AOD (CAOD) generally appears in summer and spring, while the minimum is in winter. The mean values of absorbing AOD (AAOD), Absorbing AE (AAE), and the Single Scattering Albedo (SSA) for all sites ranged from 0.017 to 0.037, from 1.16 to 2.81 and from 0.844 to 0.944, respectively. Generally, the highest absorbing aerosol load are observed over the Thar, followed by the Karakum, the Sahara, the Gobi, and then the Taklamakan Deserts, while the largest absorbing particles are observed in the Sahara followed by Arabia, Thar, Karakum, Gobi, and the smallest over the Taklamakan Desert. Similar absorption qualities are observed over the Sahara, Arabia, Thar, and Karakum Deserts, with SSA values varying between 0.90 and 0.91, whereas the most and least absorbing particles are observed at the Taklamakan and the Gobi Deserts, respectively. The seasonal AAODs are distinctly different over the deserts, with parts of Sahara and Arabia, and the Dalanzadgad sites experiencing the maximum in summer, the Southern Sahara, Western Arabia, Jaipur, and Dushanbe in winter, while the Eastern Arabia and the Muztagh Ata in autumn. AAOD and SSA spectra are consistent with dust-dominated conditions that resulted from aerosol typing (dust and polluted dust) at most deserts, with a possible presence of other absorbing particles apart from dust at Arabia, the Taklamakan, and the Gobi Desert sites. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=sahara" title="sahara">sahara</a>, <a href="https://publications.waset.org/abstracts/search?q=AERONET" title=" AERONET"> AERONET</a>, <a href="https://publications.waset.org/abstracts/search?q=desert" title=" desert"> desert</a>, <a href="https://publications.waset.org/abstracts/search?q=dust%20belt" title=" dust belt"> dust belt</a>, <a href="https://publications.waset.org/abstracts/search?q=aerosols" title=" aerosols"> aerosols</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20properties" title=" optical properties"> optical properties</a> </p> <a href="https://publications.waset.org/abstracts/166795/characteristics-of-aerosols-properties-over-different-desert-influenced-aeronet-sites" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166795.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">84</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">1</span> Nondestructive Prediction and Classification of Gel Strength in Ethanol-Treated Kudzu Starch Gels Using Near-Infrared Spectroscopy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=John-Nelson%20Ekumah">John-Nelson Ekumah</a>, <a href="https://publications.waset.org/abstracts/search?q=Selorm%20Yao-Say%20Solomon%20Adade"> Selorm Yao-Say Solomon Adade</a>, <a href="https://publications.waset.org/abstracts/search?q=Mingming%20Zhong"> Mingming Zhong</a>, <a href="https://publications.waset.org/abstracts/search?q=Yufan%20Sun"> Yufan Sun</a>, <a href="https://publications.waset.org/abstracts/search?q=Qiufang%20Liang"> Qiufang Liang</a>, <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Safiullah%20Virk"> Muhammad Safiullah Virk</a>, <a href="https://publications.waset.org/abstracts/search?q=Xorlali%20Nunekpeku"> Xorlali Nunekpeku</a>, <a href="https://publications.waset.org/abstracts/search?q=Nana%20Adwoa%20Nkuma%20Johnson"> Nana Adwoa Nkuma Johnson</a>, <a href="https://publications.waset.org/abstracts/search?q=Bridget%20Ama%20Kwadzokpui"> Bridget Ama Kwadzokpui</a>, <a href="https://publications.waset.org/abstracts/search?q=Xiaofeng%20Ren"> Xiaofeng Ren</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Enhancing starch gel strength and stability is crucial. However, traditional gel property assessment methods are destructive, time-consuming, and resource-intensive. Thus, understanding ethanol treatment effects on kudzu starch gel strength and developing a rapid, nondestructive gel strength assessment method is essential for optimizing the treatment process and ensuring product quality consistency. This study investigated the effects of different ethanol concentrations on the microstructure of kudzu starch gels using a comprehensive microstructural analysis. We also developed a nondestructive method for predicting gel strength and classifying treatment levels using near-infrared (NIR) spectroscopy, and advanced data analytics. Scanning electron microscopy revealed progressive network densification and pore collapse with increasing ethanol concentration, correlating with enhanced mechanical properties. NIR spectroscopy, combined with various variable selection methods (CARS, GA, and UVE) and modeling algorithms (PLS, SVM, and ELM), was employed to develop predictive models for gel strength. The UVE-SVM model demonstrated exceptional performance, with the highest R² values (Rc = 0.9786, Rp = 0.9688) and lowest error rates (RMSEC = 6.1340, RMSEP = 6.0283). Pattern recognition algorithms (PCA, LDA, and KNN) successfully classified gels based on ethanol treatment levels, achieving near-perfect accuracy. This integrated approach provided a multiscale perspective on ethanol-induced starch gel modification, from molecular interactions to macroscopic properties. Our findings demonstrate the potential of NIR spectroscopy, coupled with advanced data analysis, as a powerful tool for rapid, nondestructive quality assessment in starch gel production. This study contributes significantly to the understanding of starch modification processes and opens new avenues for research and industrial applications in food science, pharmaceuticals, and biomaterials. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=kudzu%20starch%20gel" title="kudzu starch gel">kudzu starch gel</a>, <a href="https://publications.waset.org/abstracts/search?q=near-infrared%20spectroscopy" title=" near-infrared spectroscopy"> near-infrared spectroscopy</a>, <a href="https://publications.waset.org/abstracts/search?q=gel%20strength%20prediction" title=" gel strength prediction"> gel strength prediction</a>, <a href="https://publications.waset.org/abstracts/search?q=support%20vector%20machine" title=" support vector machine"> support vector machine</a>, <a href="https://publications.waset.org/abstracts/search?q=pattern%20recognition%20algorithms" title=" pattern recognition algorithms"> pattern recognition algorithms</a>, <a href="https://publications.waset.org/abstracts/search?q=ethanol%20treatment" title=" ethanol treatment"> ethanol treatment</a> </p> <a href="https://publications.waset.org/abstracts/188372/nondestructive-prediction-and-classification-of-gel-strength-in-ethanol-treated-kudzu-starch-gels-using-near-infrared-spectroscopy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188372.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">37</span> </span> </div> </div> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul class="list-unstyled"> About <li><a href="https://waset.org/page/support">About Us</a></li> <li><a href="https://waset.org/page/support#legal-information">Legal</a></li> <li><a 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