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Instantaneous deflection of light-weight concrete slabs

Behnam VAKHSHOURI, Shami NEJADI

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 4,   Pages 412-423 doi: 10.1007/s11709-017-0416-8

Abstract: Construction loading before the age of 28 d can have the most significant effects on the slabs, especially for multi-story structures. The changing properties of the young concrete complicate the prediction of serviceability design requirements also. An experimental investigation is performed on four simply supported Light-Weight Concrete (LWC) one-way slabs subjected to immediate loading at 14 d. Effects of aggregate type, loading levels and cracking moment together with the influences of ultimate moment capacity and service moment on the instantaneous deflection of slabs are studied. Comparison of the obtained results with predictions of existing models in the literature shows considerable differences between the recorded and estimated instantaneous deflection of LWC slabs. Based on sensitivity analysis of the effective parameters, a new equation is proposed and verified to predict the instantaneous deflection of LWC slabs subjected to loading at the age of 14 d.

Keywords： instantaneous deflection     light-weight concrete     expanded polystyrene     effective moment of inertia     cracking    

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Porous Structural Adhesive for Thermal Insulating, Flame-Retardant, and Smoke-Suppressant Expandable Polystyrene Article

Meng-En Li, Hai-Bo Zhao, Jin-Bo Cheng, Ting Wang, Teng Fu, Ai-Ning Zhang, Yu-Zhong Wang

Engineering 2022, Volume 17, Issue 10,   Pages 151-160 doi: 10.1016/j.eng.2020.08.032

Abstract: to overcome the contradiction among flame retardancy, smoke suppression, and thermal insulation in expandedpolystyrene (EPS) foams, which are widely used insulation materials in buildings, a novel “green

Keywords： Biomass porous coating     Expanded polystyrene foam     Low thermal conductivity     Flame retardancy     Smoke suppression    

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Hormesis-like growth and photosynthetic physiology of marine diatom Bohlin exposed to polystyrene microplastics

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 1,   Pages 2-2 doi: 10.1007/s11783-021-1436-0

Abstract:

• Polystyrene microplastic caused hormesis-like effects in Phaeodactylum

Keywords： Microplastics     Marine microalgae     Phaeodactylum tricornutum Bohlin     Growth     Photosynthetic pigments     Chlorophyll fluorescence parameters    

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Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Frontiers in Energy   Pages 796-810 doi: 10.1007/s11708-023-0877-5

Abstract: In this paper, it was found that expanded space at the top of fins could distribute the heat inside microchannelsThe flow and thermal modeling of expanded microchannel heat sink (E-MCHS) were analyzed by both usingThe expanded space endowed the heat sink with lower pressure, which might further reduce the pumpingfeasible both when fins were truncated (h2 < 0, h2 is the height of expanded

Keywords： liquid metal cooling     heat sink     expanded microchannel     flow and thermal modeling    

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Reliability mesh convergence analysis by introducing expanded control variates

Alireza GHAVIDEL, Mohsen RASHKI, Hamed GHOHANI ARAB, Mehdi AZHDARY MOGHADDAM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 1012-1023 doi: 10.1007/s11709-020-0631-6

Abstract: In this study, by introducing expanded control variates (ECV) formulation, ACVAT is improved and the

Keywords： finite element     reliability mesh convergence analysis     expanded control variates    

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The development of ultralightweight expanded perlite-based thermal insulation panel using alkali activator

Damla Nur ÇELİK; Gökhan DURMUŞ

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1486-1499 doi: 10.1007/s11709-022-0881-6

Abstract: energy consumption a thermal insulation panel was developed in Turkey using different particle sizes of expanded

Keywords： expanded perlite     alkali activator     thermal insulation panel     thermal conductivity    

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Expanded Technology of Ammonium Nitrate and its Application

Lü Chunxu

Strategic Study of CAE 2000, Volume 2, Issue 2,   Pages 60-63

Abstract: The expanding technology of AN is mainly applied to rock expanded AN explosive and its comparison with

Keywords： expanded ammonium nitrate     rock     explosive     micro structrue     mechanism    

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Application of the expanded distinct element method for the study of crack growth in rock-like materials

Lei YANG, Yujing JIANG, Bo LI, Shucai LI, Yang GAO

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 2,   Pages 121-131 doi: 10.1007/s11709-012-0151-0

Abstract: The expanded distinct element method (EDEM) was used to investigate the crack growth in rock-like materials

Keywords： expanded distinct element method (EDEM)     crack growth     rock-like material     tensile-shear failure criterion    

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Synthesis of mid-dicarboxy polystyrene by ATRP and formation of ionic-bonded supramolecules

YU Tao, WANG Yun, LU Dairen, BAI Ruke, LU Weiqi

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 140-145 doi: 10.1007/s11705-007-0026-4

Abstract: A well-defined novel structural polystyrene containing two ester groups in the mid-main chain was preparedAfter being hydrolyzed, dicarboxy polystyrene was obtained and used to form ionic-bonded supramolecules

Keywords： controlled molecular     conversion     bromination     relationship     isophthalate    

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Research on Self-sensitization Theory of Expanded Ammonium Nitrate

Lv Chunxu

Strategic Study of CAE 2000, Volume 2, Issue 11,   Pages 73-77

Abstract:

Self-sensitization theory of expanded ammonium nitrate (AN) is the key point of the present innovationbasis of heat points initiating mechanism of explosion, micro air bubble is embedded in explosive of expandedComparing expanded AN with common AN and pearlstone, the micro air bubble distribution and its regularityin expanded AN are given which provide powerful basis assurance for its success of self-sensitization

Keywords： expanded AN     self-sensitization theory     micro air bubble    

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A new polystyrene-latex-based and EPS-containing synthetic sludge

Ling-Ling Wang, Shan Chen, Hai-Ting Zheng, Guo-Qing Sheng, Zhi-Jun Wang, Wen-Wei Li, Han-Qing Yu

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 131-139 doi: 10.1007/s11783-011-0390-7

Abstract: In this work, a high-strength synthetic sludge was prepared with functional polystyrene latex particlesCompared with other three functional polystyrene latex microspheres, the synthetic sludge prepared withEPS-modified polystyrene latex microspheres showed good settling characteristics and a significantly

Keywords： activated sludge     extracellular polymeric substances (EPS)     flocculation     polystyrene latex particles     synthetic    

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Influence of influent on anaerobic ammonium oxidation in an Expanded Granular Sludge Bed-Biological Aerated

Daijun ZHANG, Cui BAI, Ting TANG, Qing YANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 291-297 doi: 10.1007/s11783-010-0270-6

Abstract: nitrification-denitrification, anaerobic ammonium oxidation (ANAMMOX), and methanogenesis have been successfully coupled in an Expanded

Keywords： Expanded Granular Sludge Bed-Biological Aerated Filter (EGSB-BAF) integrated system     the influence of    

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Cerebration and Practice of Expanded feedstock sources for Ethylene units

Cao Xianghong

Strategic Study of CAE 2001, Volume 3, Issue 5,   Pages 35-43

Abstract:

This article starts with the research results that the performance of the ethylene production from hydrocarbons cracking is linked not only to the distillation range of the hydrocarbon distillate, but also its components. It raises a new concept of expanding feedstock sources different from the global trend of using lighter feedstock. The heavy distillates of Daqing crude, such as the third cut of the atmosphere tower, the first cut of the vacuum tower and the sweat distillate which is the by-product of the de-waxing of the vacuum second and third cuts, can be used as feedstock for ethylene units. This article summarizes the performance tests of the feedstock, the evaluation in a simulated cracker and the application results on industrial units. It proves that the feedstock ensures high ethylene yield and longer service lfie of cracker, thus is of obvious economic benefits.

Keywords： ethylene     feedstock     sources    

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Effect of nitrobenzene on the performance and bacterial community in an expanded granular sludge bed

Jun Li, Wentao Li, Gan Luo, Yan Li, Aimin Li

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1090-y

Abstract:

Less than 50 mg/L nitrobenzene brought little effect on anaerobic sulfate reduction.

Kinetics of sulfate reduction under different nitrobenzene contents was studied.

Increased nitrobenzene contents greatly changed the bacterial community structure.

Genus Desulfovibrio played the key role in anaerobic sulfate reduction process.

Keywords： Nitrobenzene (NB)     Sulfate-reducing bacteria (SRB)     Bacterial community     Sulfate reduction     High-throughput sequencing    

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Photocatalytic activity of ZnO films with micro-grid structure

Chunzhi LI , Wenwen WANG , Junying ZHANG , Hailing ZHU , Weiwei ZHANG , Tianmin WANG ,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 3,   Pages 289-293 doi: 10.1007/s11783-009-0034-3

Abstract: A layer of zinc oxide (ZnO) micro-grid was deposited on the surface of ZnO film using the DC reactive magnetron sputtering method and the micro-sphere lithography technique on glass substrates. Samples of this layer were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and ultraviolet-visible light spectroscopy. X-ray diffraction showed the high crystallinity of ZnO film and the regular arrangement of the micro-grid. The micro-grid ZnO has a lower specular reflection and a higher diffuse reflection, allowing incident light to reflect two or three times to enhance the usage of light. Photocatalytic degradation experiments on methylene blue using both ZnO micro-grid and ordinary film showed that the ZnO micro-grid has better photocatalytic properties than ordinary film. The ZnO micro-grid enhanced the photocatalytic efficiency of ZnO film by 28% with a degradation time of 300min.

Keywords： Photocatalysis     ZnO micro-grid     polystyrene latex spheres template     diffuse reflection    

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Title Author Date Type Operation

Instantaneous deflection of light-weight concrete slabs

Behnam VAKHSHOURI, Shami NEJADI

Journal Article

Porous Structural Adhesive for Thermal Insulating, Flame-Retardant, and Smoke-Suppressant Expandable Polystyrene

Meng-En Li, Hai-Bo Zhao, Jin-Bo Cheng, Ting Wang, Teng Fu, Ai-Ning Zhang, Yu-Zhong Wang

Journal Article

Hormesis-like growth and photosynthetic physiology of marine diatom Bohlin exposed to polystyrene microplastics

Journal Article

Flow and thermal modeling of liquid metal in expanded microchannel heat sink

Journal Article

Reliability mesh convergence analysis by introducing expanded control variates

Alireza GHAVIDEL, Mohsen RASHKI, Hamed GHOHANI ARAB, Mehdi AZHDARY MOGHADDAM

Journal Article

The development of ultralightweight expanded perlite-based thermal insulation panel using alkali activator

Damla Nur ÇELİK; Gökhan DURMUŞ

Journal Article

Expanded Technology of Ammonium Nitrate and its Application

Lü Chunxu

Journal Article

Application of the expanded distinct element method for the study of crack growth in rock-like materials

Lei YANG, Yujing JIANG, Bo LI, Shucai LI, Yang GAO

Journal Article

Synthesis of mid-dicarboxy polystyrene by ATRP and formation of ionic-bonded supramolecules

YU Tao, WANG Yun, LU Dairen, BAI Ruke, LU Weiqi

Journal Article

Research on Self-sensitization Theory of Expanded Ammonium Nitrate

Lv Chunxu

Journal Article

A new polystyrene-latex-based and EPS-containing synthetic sludge

Ling-Ling Wang, Shan Chen, Hai-Ting Zheng, Guo-Qing Sheng, Zhi-Jun Wang, Wen-Wei Li, Han-Qing Yu

Journal Article

Influence of influent on anaerobic ammonium oxidation in an Expanded Granular Sludge Bed-Biological Aerated

Daijun ZHANG, Cui BAI, Ting TANG, Qing YANG

Journal Article

Cerebration and Practice of Expanded feedstock sources for Ethylene units

Cao Xianghong

Journal Article

Effect of nitrobenzene on the performance and bacterial community in an expanded granular sludge bed

Jun Li, Wentao Li, Gan Luo, Yan Li, Aimin Li

Journal Article

Photocatalytic activity of ZnO films with micro-grid structure

Chunzhi LI , Wenwen WANG , Junying ZHANG , Hailing ZHU , Weiwei ZHANG , Tianmin WANG ,

Journal Article