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Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 772-783 doi: 10.1007/s11705-022-2280-x

Abstract: Development of a titanium silicalite-1 (TS-1) catalyst with good crystallinity and a four-coordinateHerein, a size-controlled TS-1 zeolite (TS-1#0.1ACh (acetylcholine)) was synthesized via steam-assistedThe crystalline sizes of the as-synthesized TS-1#0.1ACh catalysts were controlled with the acetylcholinecontent, and characterization results showed that the particle sizes of highly crystalline TS-1#0.1AChThese findings may provide novel, easily separable and large TS-1 catalysts for efficient and clean industrial

Keywords： size-controlled TS-1     crystal modifier     steam-assisted crystallization     epoxidation    

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Deactivation and regeneration of TS-1/SiO

Hainan SHI, Yaquan WANG, Guoqiang WU, Wenping FENG, Yi Lin, Teng ZHANG, Xing JIN, Shuhai WANG, Xiaoxue WU, Pengxu YAO

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 2,   Pages 202-209 doi: 10.1007/s11705-013-1328-3

Abstract: TS-1/SiO catalyst for the epoxidation of propylene with hydrogen peroxide in a fixed-bed reactor hasframework structure and the content of titanium in the framework of the deactivated and regenerated TS-1-1/SiO catalysts were not changed.-1.The deposited materials on the deactivated TS-1/SiO catalyst could be removed by treatment with hydrogen

Keywords： TS-1/SiO2     epoxidation of propylene     fixed-bed reactor     deactivation     regeneration    

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Size-controlled green synthesis of silver nanoparticles assisted by L-cysteine

Wenchao Zhang,Lin Zhang,Yan Sun

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 4,   Pages 494-500 doi: 10.1007/s11705-015-1527-1

Abstract: A green and size-controlled synthesis of silver nanoparticles (Ag NPs) in aqueous solution with the assistanceThe size of Ag NPs decreases with the increase of L-cysteine concentration, and thus can be controlledTEM analysis shows that Ag NPs with an average size of 3 nm can be produced in the presence of 1.0 mmol/L L-cysteine, about one sixth of the size of Ag NPs obtained in the absence of L-cysteine (17 nm).

Keywords： nanoparticles     silver     L-cysteine     size distribution     synthesis    

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Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1788-1800 doi: 10.1007/s11705-023-2326-8

Abstract: Monodispersed nitrogen-doped carbon nanospheres with tunable particle size (100–230 nm) were synthesizedself-polymerization of biochemical dopamine in the presence of hexamethylenetetramine as a buffer and F127 as a sizeThe carbon nanospheres obtained exhibited a significant energy storage capability of 265 F·g–1 at 0.5 A·g–1 and high-rate performance of 82% in 6 mol·L–1 KOH (20 A·gsize.

Keywords： carbon nanospheres     size-controlled     nitrogen-doped     high-rate     supercapacitors    

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Effect of sodium ions in synthesis of titanium silicalite-1 on its catalytic performance for cyclohexanone

Pengxu YAO,Yaquan WANG,Teng ZHANG,Shuhai WANG,Xiaoxue WU

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 2,   Pages 149-155 doi: 10.1007/s11705-014-1409-y

Abstract: Titanium silicalite-1 (TS-1) has been hydrothermally synthesized with tetrapropylammonium hydroxide (results show that with the increase of Na concentration in the synthesis, both the crystal sizes of TS-1and extra framework Ti increase but framework Ti decreases.addition, which can be attributed to more high molecular weight byproducts deposited in the large TS-1-1 particles and the loss of the frame-work titanium.

Keywords： extra framework Ti     cyclohexanone ammoximation     titanium silicalite-1     sodium ion     crystal size    

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Synthesis and characterization of biocompatible polyurethanes for controlled release of hydrophobic and

Juichen YANG,Hong CHEN,Yuan YUAN,Debanjan SARKAR,Jie ZHENG

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 4,   Pages 498-510 doi: 10.1007/s11705-014-1451-9

Abstract: Design of biocompatible and biodegradable polymer systems for sustained and controlled release of bioactiveHere, we designed, synthesized, and characterized four polyurethane carrier systems for controlled releaseattributed to a complex interplay among structure, hydrophobicity, and degradability of polyurethanes, the size

Keywords： phase structure     degradation     polyurethanes     controlled release     drug delivery    

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The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 3, doi: 10.1007/s11783-020-1356-4

Abstract:

•Bacterial concentrations from eight stages were 104–105copies/m3.

Keywords： Size distribution     Airborne bacteria     Biological diversity     Human pathogenic bacteria     Composting plants    

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Particle size distribution and shape control of Au nanoparticles used for particle gun

S. Kida, M. Ichiji, J. Watanabe, I. Hirasawa

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 60-64 doi: 10.1007/s11705-013-1313-x

Abstract: However, the control of particle size distribution (PSD) and shape of Au nanoparticles is too difficultMoreover, in single-jet and double-jet, the mean size of the obtained Au particles increases with theIt is concluded that PSD of Au nanoparticles can be controlled in the range of 50–400 nm by changing

Keywords： reduction crystallization     particle size distribution     gene transferring media    

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A better way to do small-for-size liver transplantation in rats

Jiang LI, Yu HOU, Jing LIU, Bin LIU, Li LI

Frontiers of Medicine 2011, Volume 5, Issue 1,   Pages 106-110 doi: 10.1007/s11684-011-0113-2

Abstract:

Establishing a model for small-for-size liver transplantation is the basis for this study of partialThis study aims to explore a simpler and more effective way of establishing a 30% small-for-size liverSmall-for-size orthotopic liver transplantation was performed using Kamada’s two-cuff method.and right lobes for grafting may be a more effective and simpler way of establishing a 30% small-for-size

Keywords： liver transplantation     small-for-size     rats    

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Effect of Cu-ZSM-5 catalysts with different CuO particle size on selective catalytic oxidation of N,N-Dimethylformamide

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1557-0

Abstract:

● A series of Cu-ZSM-5 catalysts were tested for DMF selective catalytic oxidation.

Keywords： N     N-Dimethylformamide     Selective catalytic oxidation     Cu-ZSM-5     CuO particle size    

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Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 943-955 doi: 10.1007/s11708-021-0793-5

Abstract: interaction stability issues of a wind farm with weak grid connections, where the wind turbines (WTs) are controlled

Keywords： weak grids     voltage source (VS) control     wind turbine (WT)     stabilization control     wind farm     inertial response    

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Damage quantitative assessment of spacecraft in a large-size inspection Research Article

Kuo ZHANG, Jianliang HUO, Shengzhe WANG, Xiao ZHANG, Yiting FENG,huoliaang@163.com

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 4,   Pages 542-554 doi: 10.1631/FITEE.2000733

Abstract: To ensure the safety and reliability of spacecraft during multiple space missions, it is necessary to conduct in-situ nondestructive detection of the spacecraft to judge the damage caused by the of micrometeoroids and orbital debris (MMOD). In this paper, we propose an innovative method based on damage reconstructed image mosaic technology. First, a Gaussian mixture model clustering algorithm is applied to extract images that highlight damage characteristics. Then, a mosaicking scheme based on the ORB feature extraction algorithm and an improved M-estimator SAmple Consensus (MSAC) algorithm with an adaptive threshold selection method is proposed which can create large-scale mosaicked images for damage detection. Eventually, to create the mosaicked images, the damage characteristic regions are segmented and extracted. The location of the damage area is determined and the degree of damage is judged by calculating the centroid position and the perimeter quantitative parameters. The efficiency and applicability of the proposed method are verified by the experimental results.

Keywords： Hypervelocity impact     Damage information extraction     Image mosaicking     Damage localization     Quantitative assessment    

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Chinese medicine patterns on patients with pneumoconiosis: a pilot double-blind, randomized, and placebo-controlled

Frontiers of Medicine 2022, Volume 16, Issue 5,   Pages 736-744 doi: 10.1007/s11684-021-0870-5

Abstract: A double-blind, randomized, and placebo-controlled trial was conducted for 24 weeks, in which 96 patients

Keywords： pneumoconiosis     randomized controlled trials     traditional Chinese medicine    

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Influence of surface cracking, anchor head profile, and anchor head size on cast-in headed anchors in

Frontiers of Structural and Civil Engineering   Pages 1163-1187 doi: 10.1007/s11709-023-0987-5

Abstract: above prediction models depends on the effective embedment depth of the anchor and the anchor head size

Keywords： cast-in anchor     concrete cone capacity     geopolymer concrete     head size     surface crack     anchor profile    

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Applications of thermostatically controlled loads for demand response with the proliferation of variable

Meng SONG, Wei SUN

Frontiers in Energy 2022, Volume 16, Issue 1,   Pages 64-73 doi: 10.1007/s11708-021-0732-5

Abstract: Thermostatically controlled loads (TCLs) attract tremendous attentions because of their specific thermal

Keywords： thermostatically controlled load     demand response     renewable energy     power system operation    

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Title Author Date Type Operation

Controllable synthesis of a large TS-1 catalyst for clean epoxidation of a C=C double bond under mild

Journal Article

Deactivation and regeneration of TS-1/SiO

Hainan SHI, Yaquan WANG, Guoqiang WU, Wenping FENG, Yi Lin, Teng ZHANG, Xing JIN, Shuhai WANG, Xiaoxue WU, Pengxu YAO

Journal Article

Size-controlled green synthesis of silver nanoparticles assisted by L-cysteine

Wenchao Zhang,Lin Zhang,Yan Sun

Journal Article

Size-controllable synthesis of monodispersed nitrogen-doped carbon nanospheres from polydopamine for

Journal Article

Effect of sodium ions in synthesis of titanium silicalite-1 on its catalytic performance for cyclohexanone

Pengxu YAO,Yaquan WANG,Teng ZHANG,Shuhai WANG,Xiaoxue WU

Journal Article

Synthesis and characterization of biocompatible polyurethanes for controlled release of hydrophobic and

Juichen YANG,Hong CHEN,Yuan YUAN,Debanjan SARKAR,Jie ZHENG

Journal Article

The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

Journal Article

Particle size distribution and shape control of Au nanoparticles used for particle gun

S. Kida, M. Ichiji, J. Watanabe, I. Hirasawa

Journal Article

A better way to do small-for-size liver transplantation in rats

Jiang LI, Yu HOU, Jing LIU, Bin LIU, Li LI

Journal Article

Effect of Cu-ZSM-5 catalysts with different CuO particle size on selective catalytic oxidation of N,N-Dimethylformamide

Journal Article

Analysis and stabilization control of a voltage source controlled wind farm under weak grid conditions

Journal Article

Damage quantitative assessment of spacecraft in a large-size inspection

Kuo ZHANG, Jianliang HUO, Shengzhe WANG, Xiao ZHANG, Yiting FENG,huoliaang@163.com

Journal Article

Chinese medicine patterns on patients with pneumoconiosis: a pilot double-blind, randomized, and placebo-controlled

Journal Article

Influence of surface cracking, anchor head profile, and anchor head size on cast-in headed anchors in

Journal Article

Applications of thermostatically controlled loads for demand response with the proliferation of variable

Meng SONG, Wei SUN

Journal Article