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Optimizing the compressive strength of concrete containing micro-silica, nano-silica, and polypropylene

Fatemeh ZAHIRI, Hamid ESKANDARI-NADDAF

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 821-830 doi: 10.1007/s11709-019-0518-6

Abstract: Many studies have evaluated the effects of additives such as nano-silica (NS), micro-silica (MS) and

Keywords： mixture method     compressive strength     nano-silica     micro-silica     polypropylene fibers    

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Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1712-2

Abstract:

● Both amorphous and crystalline silicon are completely separated from coal fly ash.

Keywords： Coal fly ash     Alkali fusion     Micro-/meso-porous Si     Zeolite MCM-48     Crystalline transformation    

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Dispersion of “guava-like” silica/polyacrylate nanocomposite particles in polyacrylate matrix

QI Dongming, YANG Lei, WU Minghua, SHAO Jianzhong, BAO Yongzhong

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 2,   Pages 127-134 doi: 10.1007/s11705-008-0033-0

Abstract: A series of “guava-like” silica/polyacrylate nanocomposite particles with close silica content and differentThe silica/polyacrylate composite particles were melt-mixed with unfilled polyacrylate (PA) resin toprepare corresponding silica/polyacrylate molded composites and the dispersion mechanism of these silicaIt was calculated that about 110 silica particles were accumulated in the bulk of every silica/polyacrylateindicated that the grafting degree of silica particles played a crucial role in the dispersion of silica

Keywords： silica/polyacrylate composite     cross-linked network     –70     guava-like     TEM    

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Enhanced activation of persulfate using mesoporous silica spheres augmented Cu–Al bimetallic oxide particles

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1581-1592 doi: 10.1007/s11705-023-2327-7

Abstract: Herein, Cu–Al bimetallic oxide was synthesized and mixed with mesoporous silica spheres via a simplespectroscopy, Cu–Al bimetallic oxide was determined as CuO-Al2O3, and mesoporous silicaFurthermore, mesoporous silica spheres augment not only enhanced bisphenol A adsorption but also alleviated

Keywords： Cu–Al bimetallic oxides     mesoporous silica spheres     peroxydisulfate     bisphenol A    

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The modification of titanium in mesoporous silica for Co-based Fischer–Tropsch catalysts

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1224-1236 doi: 10.1007/s11705-022-2139-1

Abstract: Ordered SBA-15 mesoporous silica with incorporated titanium was successfully synthesized via a one-potThe results showed that titanium was successfully incorporated into the mesoporous silica framework with

Keywords： Fischer–Tropsch synthesis     titanium incorporation     mesoporous silica     metal-support interactions     C   

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The construction of pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 7,   Pages 1101-1113 doi: 10.1007/s11705-021-2095-1

Abstract: The findings of this study could help to better understand the construction mechanism of pseudo-Janus silica

Keywords： Janus nanoparticles     surfactant     double phase inversion     self-assembly     enhanced oil recovery    

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Flexible micro flow sensor for micro aerial vehicles

Rong ZHU, Ruiyi QUE, Peng LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 539-545 doi: 10.1007/s11465-017-0427-0

Abstract:

This article summarizes our studies on micro flow sensors fabricated on a flexible polyimide circuitThe micro flow sensor has merits of flexibility, structural simplicity, easy integrability with circuitsIn our study, we install the fabricated micro flow sensors on micro aerial vehicles (MAVs) to detect

Keywords： micro flow sensor     flexible sensor     surface flow sensing     aerodynamic parameter     micro aerial vehicle (MAV    

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Effects of polyethylenimine on the dispersibility of hollow silica nanoparticles

WEN Lixiong, WANG Qing, ZHENG Tianyuan, CHEN Jianfeng

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 277-282 doi: 10.1007/s11705-007-0050-4

Abstract: In this study, two different methods were applied to disperse hollow silica nanoparticles (HSNP); one

Keywords： dispersion improvement     different     prepared HSNP     relationship     agglomeration    

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copolymerization of -isopropylacrylamide with 3-(methacryloxy)propyl trimethoxysilane on ultrafine silica

ZHANG Liping, ZHU Yi, NI Caihua

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 242-247 doi: 10.1007/s11705-008-0043-y

Abstract: isopropylacrylamide with [ 3-(methacryloxy) propyl]trimethoxysilane (MPT) coupled on the surface of ultrafine silicaThe structure of modified silica was confirmed by infrared spectra.In contrast, the packing material of silica-MPT has no such separation efficiency due to the lack ofattributed to a polarity change of poly(-isopropylacrylamide) which undergoes volume phase transition on the silica

Keywords： undergoes     water-methanol     surfactant concentration     copolymerization     chromatography    

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Sulfonic acid-functionalized mesoporous silica catalyst with different morphology for biodiesel production

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 8,   Pages 1198-1210 doi: 10.1007/s11705-021-2133-z

Abstract: Sulfonic acid functionalized mesoporous silica based solid acid catalysts with different morphology wereThe sulfonic acid functionalized mesoporous silica catalysts of spherical shape and the cube shape wereIt was sulfonated cubic shape mesoporous silica which exhibited better activity as compared to the sphericalshape silica catalysts.

Keywords： solid acid catalyst     mesoporous silica     sulfonic acid     biodiesel     esterification     oleic acid    

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Dependence of error sensitivity of frequency on bias voltage in force-balanced micro accelerometer

Lili CHEN, Wu ZHOU

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 146-149 doi: 10.1007/s11465-013-0260-z

Abstract:

To predict more precisely the frequency of force-balanced micro accelerometer with different biasBased on the theoretical results, micro accelerometer is fabricated and tested to study the influences

Keywords： Micro-Electro-Mechanical Systems (MEMS)     micro accelerometer     force-balanced micro accelerometer     frequency    

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Numerical simulation of micro scale flowing and boiling

Wen WANG, Rui ZHUAN,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 396-401 doi: 10.1007/s11708-009-0049-2

Abstract: Numerical simulations of flowing and boiling in micro channels are presented, including the modelingThe simulated results also show the details of 3-dimensional heat transfer and the flow in micro channels, which are helpful to the investigation of the mechanism of two-phase heat transfer and flow in micro

Keywords： volume-of-fluid (VOF)     micro channel     nucleate boiling     bubble dynamics     simulation    

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Preparation and characterization of polyimide/silica/silver composite films

JIANG Lizhong, WU Dezhen, LUO Ning, WU Zhanpeng, MOU Nanxiang

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 291-295 doi: 10.1007/s11705-008-0059-3

Abstract: Polyimide/silica/silver hybrid films were prepared by the sol-gel method combined with single-stageThe structure of polyimide films in the thermal curing process and the influence of silica content onThe results indicated that there was no degradation of the polyimide matrix after the formation of silicaSilica acted as the nucleus for the silver particles.With increasing silica content, more and more silver particles were kept in the hybrid films instead

Keywords： single-stage self-metallization     spectroscopy     transmission     Polyimide/silica/silver     ultraviolet visible    

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Dynamical research on spherical micro actuator with piezoelectric ceramic stacks drivers

ZHANG Ruihua, CHEN Haichu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 433-438 doi: 10.1007/s11465-007-0074-y

Abstract: This paper develops a 30 mm × 30 mm × 50 mm spherical micro actuator driven by piezoelectric ceramicwith a micro-gripper based on the sample spherical micro actuator, and the experimental research onthe micro assembly is conducted between a micro shaft of 180 μm and a micro spindle sleeve of 200 μm.the metal sphere and the friction block of the micro driving unit are analyzed.micro operation and assembly for micro electro mechanical systems (MEMS) or other microelements in micro

Keywords： spherical     micro-gripper     friction coefficient     dynamic     frequency    

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Deep learning model for estimating the mechanical properties of concrete containing silica fume exposed

Harun TANYILDIZI, Abdulkadir ŞENGÜR, Yaman AKBULUT, Murat ŞAHİN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1316-1330 doi: 10.1007/s11709-020-0646-z

Abstract: this study, the deep learning models for estimating the mechanical properties of concrete containing silicaSilica fume was used at concentrations of 0%, 5%, 10%, and 20%.used for forecasting the compressive strength and ultrasonic pulse velocity of concrete containing silica

Keywords： concrete     high temperature     strength properties     deep learning     stacked auto-encoders     LSTM network    

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Title Author Date Type Operation

Optimizing the compressive strength of concrete containing micro-silica, nano-silica, and polypropylene

Fatemeh ZAHIRI, Hamid ESKANDARI-NADDAF

Journal Article

Porous silica synthesis out of coal fly ash with no residue generation and complete silicon separation

Journal Article

Dispersion of “guava-like” silica/polyacrylate nanocomposite particles in polyacrylate matrix

QI Dongming, YANG Lei, WU Minghua, SHAO Jianzhong, BAO Yongzhong

Journal Article

Enhanced activation of persulfate using mesoporous silica spheres augmented Cu–Al bimetallic oxide particles

Journal Article

The modification of titanium in mesoporous silica for Co-based Fischer–Tropsch catalysts

Journal Article

The construction of pseudo-Janus silica/surfactant assembly and their application to stabilize Pickering

Journal Article

Flexible micro flow sensor for micro aerial vehicles

Rong ZHU, Ruiyi QUE, Peng LIU

Journal Article

Effects of polyethylenimine on the dispersibility of hollow silica nanoparticles

WEN Lixiong, WANG Qing, ZHENG Tianyuan, CHEN Jianfeng

Journal Article

copolymerization of -isopropylacrylamide with 3-(methacryloxy)propyl trimethoxysilane on ultrafine silica

ZHANG Liping, ZHU Yi, NI Caihua

Journal Article

Sulfonic acid-functionalized mesoporous silica catalyst with different morphology for biodiesel production

Journal Article

Dependence of error sensitivity of frequency on bias voltage in force-balanced micro accelerometer

Lili CHEN, Wu ZHOU

Journal Article

Numerical simulation of micro scale flowing and boiling

Wen WANG, Rui ZHUAN,

Journal Article

Preparation and characterization of polyimide/silica/silver composite films

JIANG Lizhong, WU Dezhen, LUO Ning, WU Zhanpeng, MOU Nanxiang

Journal Article

Dynamical research on spherical micro actuator with piezoelectric ceramic stacks drivers

ZHANG Ruihua, CHEN Haichu

Journal Article

Deep learning model for estimating the mechanical properties of concrete containing silica fume exposed

Harun TANYILDIZI, Abdulkadir ŞENGÜR, Yaman AKBULUT, Murat ŞAHİN

Journal Article