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Study on the growth of platinum nanowires as cathode catalysts in proton exchange membrane fuel cells

Ruiqing Wang, Xiaolan Cao, Sheng Sui, Bing Li, Qingfeng Li

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 364-375 doi: 10.1007/s11705-021-2052-z

Abstract: In this paper, accurately controlled growth of nanowires in a carbon matrix is achieved for reducingA mechanism of the Pt nanowires growth is proposed.

Keywords： Pt nanowires     morphology     structure control     in situ growth mechanism     proton exchange membrane fuel    

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Nucleation and growth mechanism of cefodizime sodium at different solvent compositions

Xinwei ZHANG, Shudong ZHANG, Xiaodan SUN, Zequn YIN, Quanjie LIU, Xiwen ZHANG, Qiuxiang YIN

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 490-495 doi: 10.1007/s11705-013-1350-5

Abstract: According to the modified classical nucleation theory, the nucleation and growth mechanism were identifiedthe nucleation process at lower supersaturation, where homogeneous nucleation is the most important mechanismBased on the correlated results, the 2D mediated growth mechanism had the highest correlation coefficients( ), so this mechanism was selected as the proper growth mechanism for cefodizime sodium.

Keywords： cefodizime sodium     induction time     primary nucleation     growth mechanism    

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>In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu2O@CF electrocatalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1430-1439 doi: 10.1007/s11705-023-2320-1

Abstract: Herein, we report an in situ phosphorization of zeolitic imidazole frameworks (ZIF-67) to generate

Keywords： CoP/Cu2O@CF     electrocatalyst     phosphorization     HER     DFT    

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Mechanism of vascular endothelial growth factor on the prevention of restenosis after angioplasty

Qigong LIU, Honglian ZHOU, Yan ZENG, Shan YE, Jiani LIU, Zaiying LU

Frontiers of Medicine 2009, Volume 3, Issue 2,   Pages 177-180 doi: 10.1007/s11684-009-0021-x

Abstract: To evaluate the mechanism of vascular endothelial growth factor (VEGF) on the prevention of restenosis

Keywords： vascular endothelial growth factors     restenosis     reactive oxygen species     endothelial cells     vascular smooth    

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Resolution of the mechanism of steel output growth and study on the reasons of the excessive growth of

Lu Zhongwu,Yue Qiang

Strategic Study of CAE 2010, Volume 12, Issue 6,   Pages 4-11

Abstract:

Mechanism of steel output growth was resolved by two steps: firstly a

Keywords： teel output     steel products in use     GDP     annual increasing rate     mechanism     standard mode    

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Conversion Mechanism of Biomass to Nano Zero-Valent Iron Biochar: Iron Phase Transfer and In situ Reduction Article

Shengnan Zhuo, Hongyu Ren, Guojun Xie, Defeng Xing, Bingfeng Liu

Engineering 2023, Volume 21, Issue 2,   Pages 124-134 doi: 10.1016/j.eng.2021.07.012

Abstract:

Nano zero-valent iron biochar (nZVI–BC), an environmentally-friendly functional material prepared from waste biomass, has attracted extensive attention. This material has potential to solve the problem of biomass conversion. However, the lack of a method of converting biomass to the nZVI–BC involved in biomass modification and pyrolysis hinders its further production and application. In this study, we introduced the green solvent polyethylene glycol 400 (PEG400) to a biomass (rice straw, RS) modification system with FeCl3·6H2O, and activated RS was prepared to nZVI–BC by one-step pyrolysis. The addition of PEG400 promoted the hydrolysis of iron ion and improved the RS surface structure, promoting the attachment of Fe2O3 to the RS surface. The mild activation conditions with temperatures of 60, 80, 100 °C and a time of 0.5 h prevented the excessive loss of the lignin component and were conducive to the formation of carbon skeletons. Amorphous carbon and Fe2O3 were subjected to redox reactions to form nZVI–BC with the assistance of reducing gas produced from pyrolysis. In addition, the prepared nZVI–BC was tested for dye (Congo red) removal, showing rapid absorption (70.6% at 5 min) and high catalysis in advanced oxidation (75.67% at 5 min, 90% at 60 min). This work proposed a novel mechanistic strategy for preparing nZVI–BC and set a foundation for its scaled production and application.

Keywords： Conversion mechanism     Biomass modification     nZVI-biochar preparation     In situ pyrolysis     Iron    

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Room temperature preparation of hydrazine-linked covalent organic frameworks coated capillaries for separation and determination of polycyclic aromatic hydrocarbons

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 548-556 doi: 10.1007/s11705-022-2252-1

Abstract: The TFPB-DHzDS coated capillaries were prepared by an in-situ growth process at room temperatureinteraction between the analytes and coating COF materials to investigate the molecular level separation mechanism

Keywords： hydrazine-linked TFPB-DHzDS     in-situ growth method     open-tubular capillary electrochromatography    

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Development and application of ex-situ presulfurization technology for hydrotreating catalysts in China

Yulan GAO, Xiangchen FANG, Zhenmin CHENG

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 3,   Pages 287-296 doi: 10.1007/s11705-010-0529-2

Abstract: The development and application of ex-situ presulfurization (EPRES) technology for hydrotreating catalysts

Keywords： ex-situ presulfurization     in situ presulfurization     hydrotreating catalyst     sulfur utilization ratio    

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A novel six-legged walking machine tool for

Jimu LIU, Yuan TIAN, Feng GAO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 3,   Pages 351-364 doi: 10.1007/s11465-020-0594-2

Abstract: The manufacture and maintenance of large parts in ships, trains, aircrafts, and so on create an increasing demand for mobile machine tools to perform operations. However, few mobile robots can accommodate the complex environment of industrial plants while performing machining tasks. This study proposes a novel six-legged walking machine tool consisting of a legged mobile robot and a portable parallel kinematic machine tool. The kinematic model of the entire system is presented, and the workspace of different components, including a leg, the body, and the head, is analyzed. A hierarchical motion planning scheme is proposed to take advantage of the large workspace of the legged mobile platform and the high precision of the parallel machine tool. The repeatability of the head motion, body motion, and walking distance is evaluated through experiments, which is 0.11, 1.0, and 3.4 mm, respectively. Finally, an application scenario is shown in which the walking machine tool steps successfully over a 250 mm-high obstacle and drills a hole in an aluminum plate. The experiments prove the rationality of the hierarchical motion planning scheme and demonstrate the extensive potential of the walking machine tool for operations on large parts.

Keywords： legged robot     parallel mechanism     mobile machine tool     in-situ machining    

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Polyolefin-nanocomposites with special properties by in-situ polymerization

Walter Kaminsky

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 555-563 doi: 10.1007/s11705-018-1715-x

Abstract:

Exceptionally strong polyolefin nanocomposites are synthesized by in-situ polymerization using

Keywords： polyolefin nanocomposites     metallocenes     methylaluminoxane    

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Economic Growth Model Based on Six Basic Factors of Production—Xu Growth Rate Equation

Shou-bo Xu,Zong-yuan Huang

Frontiers of Engineering Management 2014, Volume 1, Issue 2,   Pages 160-175 doi: 10.15302/J-FEM-2014024

Abstract: This paper proposes an economic growth model based on the Six Basic Factors of Production and Xu GrowthRate Equation for the first time, which fills-in the deficits of the New Classical Economic Growth Modeldecades, the consumption of six basic factors of production had complicated relations with economic growthrate of the basic factors of production was meager, but the economy witnessed relatively rocketing growthrate; in some years, the factors of production consumption rate was very high, but the economy growth

Keywords： six basic factors of production     economic growth model     Xu Growth Rate Equation    

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Clinical evaluation of recombinant human growth hormone injection in children with growth hormone deficiency

Ling HOU, Xiaoping LUO, Minlian DU, Huamei MA, Chunxiu GONG, Yuchuan LI, Shuixian SHEN, Zhuhui ZHAO, Li LIANG, Guanping DONG, Chaoying YAN, Hongwei DU

Frontiers of Medicine 2009, Volume 3, Issue 2,   Pages 171-176 doi: 10.1007/s11684-009-0027-4

Abstract: Recombinant human growth hormone (rhGH) has been widely used in the clinical treatment of growth hormoneof the current study was to evaluate the efficacy and safety of rhGH injection for the treatment of growthThe height (HT), annual growth velocity (GV), mean height standard deviation score (HT SDS), blood seruminsulin-like growth factor I (IGF-I), insulin-like growth factor binding protein 3 (IGFBP-3), and boneWe conclude that rhGH injection is a safe and effective drug for treatment of growth hormone deficiency

Keywords： recombinant human growth hormone     injection     growth hormone deficiency    

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Copper fractal growth during recycling from waste printed circuit boards by slurry electrolysis

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1405-7

Abstract:

• Copper fractal growth was observed during WPCBs recycling by slurry

Keywords： Dendritic copper     Fractal growth     WPCBs     Slurry electrolysis    

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Growth and abscisic acid responses of

Yue LI, Liqiang WAN, Yufei WANG, Xianglin LI

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 1,   Pages 80-86 doi: 10.15302/J-FASE-2017199

Abstract: The response of alfalfa to water stress at different growth stages was generally similar, but varied

Keywords： abscisic acid     alfalfa     drought response     growth stage     water deficit    

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Title Author Date Type Operation

Study on the growth of platinum nanowires as cathode catalysts in proton exchange membrane fuel cells

Ruiqing Wang, Xiaolan Cao, Sheng Sui, Bing Li, Qingfeng Li

Journal Article

Nucleation and growth mechanism of cefodizime sodium at different solvent compositions

Xinwei ZHANG, Shudong ZHANG, Xiaodan SUN, Zequn YIN, Quanjie LIU, Xiwen ZHANG, Qiuxiang YIN

Journal Article

>In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu2O@CF electrocatalyst

Journal Article

Mechanism of vascular endothelial growth factor on the prevention of restenosis after angioplasty

Qigong LIU, Honglian ZHOU, Yan ZENG, Shan YE, Jiani LIU, Zaiying LU

Journal Article

Resolution of the mechanism of steel output growth and study on the reasons of the excessive growth of

Lu Zhongwu,Yue Qiang

Journal Article

Conversion Mechanism of Biomass to Nano Zero-Valent Iron Biochar: Iron Phase Transfer and In situ Reduction

Shengnan Zhuo, Hongyu Ren, Guojun Xie, Defeng Xing, Bingfeng Liu

Journal Article

Room temperature preparation of hydrazine-linked covalent organic frameworks coated capillaries for separation and determination of polycyclic aromatic hydrocarbons

Journal Article

Development and application of ex-situ presulfurization technology for hydrotreating catalysts in China

Yulan GAO, Xiangchen FANG, Zhenmin CHENG

Journal Article

A novel six-legged walking machine tool for

Jimu LIU, Yuan TIAN, Feng GAO

Journal Article

Photosynthesis and related metabolic mechanism of promoted rice (Oryza sativa L.) growth by TiO2 nanoparticles

Yingdan Zhang, Na Liu, Wei Wang, Jianteng Sun, Lizhong Zhu

Journal Article

Polyolefin-nanocomposites with special properties by in-situ polymerization

Walter Kaminsky

Journal Article

Economic Growth Model Based on Six Basic Factors of Production—Xu Growth Rate Equation

Shou-bo Xu,Zong-yuan Huang

Journal Article

Clinical evaluation of recombinant human growth hormone injection in children with growth hormone deficiency

Ling HOU, Xiaoping LUO, Minlian DU, Huamei MA, Chunxiu GONG, Yuchuan LI, Shuixian SHEN, Zhuhui ZHAO, Li LIANG, Guanping DONG, Chaoying YAN, Hongwei DU

Journal Article

Copper fractal growth during recycling from waste printed circuit boards by slurry electrolysis

Journal Article

Growth and abscisic acid responses of

Yue LI, Liqiang WAN, Yufei WANG, Xianglin LI

Journal Article