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On Step by Step Method in Developing Aero-Engines

Wen Junfeng

Strategic Study of Chinese Academy of Engineering 2000, Volume 2, Issue 3,   Pages 23-26

Abstract: The regularity and importance of the mode of step by step development are discussed and justified with

Keywords： aero-engine     ways to develop aero-engines     step by step method    

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One-step synthesis of recoverable CuCo

Tongzhou Lu, Yongzheng Zhang, Chun Cheng, Yanbin Wang, Yongming Zhu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 595-604 doi: 10.1007/s11705-019-1818-z

Abstract: A facile one-step hydrothermal method has been adopted to directly synthesize the CuCo S material on

Keywords： copper cobalt sulfide     recoverability     one-step hydrothermal method     anode material     Li-ion battery    

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Analysis of flow over backward facing step with transition

Dwarikanath RATHA,Arindam SARKAR

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 1,   Pages 71-81 doi: 10.1007/s11709-014-0270-x

Abstract: The flow of air over a backward facing step has been investigated numerically using FLUENT.Flow simulation has been carried out in a backward facing step having an expansion ratio (ratio of theheight before and after the step) of 1:1.94 and the results obtained are compared with the publishedThe primary reattachment length at the bottom wall downstream of the step is minimum for the step withround edged transition and maximum for the step with a vertical drop transition.

Keywords： Reattachment length     backward facing step     transition     flow separation     k-? model    

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ApipelinedReed-Solomon decoder based on a modified step-by-step algorithm Article

Xing-ru PENG,Wei ZHANG,Yan-yan LIU

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 9,   Pages 954-961 doi: 10.1631/FITEE.1500303

Abstract: propose a pipelined Reed-Solomon (RS) decoder for an ultra-wideband system using a modified stepby-stepTo reduce the complexity, the modified step-by-step algorithm merges two cases of the original algorithmThe area of the proposed decoder is 11.3% less than that of the previous step-by-step decoder with a

Keywords： Reed-Solomon codes     Step-by-step algorithm     Ultra-wideband     Pipelined structure    

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Microplastics removal strategies: A step toward finding the solution

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 1,   Pages 7-7 doi: 10.1007/s11783-021-1441-3

Abstract: Other than finding a suitable method, the creation of legal restrictions at a governmental level by imposing

Keywords： Aquatic     Coagulation     Microplastics     Plastic     Water Treatment Plant     Wastewater    

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Practical consideration for design and optimization of the step feed process

Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 135-142 doi: 10.1007/s11783-012-0454-3

Abstract: Based on the anoxic/oxic (A/O) step feed process, a modified University of Cape Town (UCT) step feedConsequently, the modified UCT step feed process was more attractive for the wastewater treatment plant

Keywords： step feed     anoxic/oxic (A/O)     University of Cape Town (UCT)     simultaneous nitrification and denitrification    

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One-step synthesis of

Kuiyi YOU, Fangfang ZHAO, Xueyan LONG, Pingle LIU, Qiuhong AI, Hean LUO

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4,   Pages 389-394 doi: 10.1007/s11705-012-1218-0

Abstract: A series of novel AlVPO composites were prepared by an impregnation method and the composites were thenfuming sulfuric acid, the selectivity for the desired product was significantly improved using this one-stepThis method affords a shortcut to prepare -caprolactam and its analogs from cyclohexane.

Keywords： -caprolactam     AlVPO composite catalysts     one-step synthesis     concentrated sulfuric acid    

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Denitrification and phosphorus uptake by DPAOs using nitrite as an electron acceptor by step-feed strategies

Bin MA, Shuying WANG, Guibing ZHU, Shijian GE, Junmin WANG, Nanqi Ren, Yongzhen PENG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 2,   Pages 267-272 doi: 10.1007/s11783-012-0439-2

Abstract: In this study, the step-feed strategy was proposed to achieve low nitrite concentration, which can avoidnitrite denitrified (anoxic P/N ratio) increased when the nitrite concentration was 15 mg·L after step-feedingDenitrification rate by DPAOs decreased gradually when nitrite (about 20 mg·L ) was added in the step-feedThese results indicated that the step-feed strategy can be used to achieve denitrifying phosphorus removal

Keywords： denitrifying phosphate accumulating organisms (DPAOs)     denitrification     phosphorus uptake     nitrite     step-feed    

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Error measurement and assemble error correction of a 3D-step-gauge

MAO Xinyong, LI Bin, SHI Hanmin, LIU Hongqi, LI Xi, LI Peigen

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 388-393 doi: 10.1007/s11465-007-0067-x

Abstract: A new artifact called 3D-step-gauge consisting of a pyramid array and a compound, is proposed to calculatedifferences in the structural parameters and the location of the pyramids, a volumetric error measurement methodThe 3D-step-gauge was tested on an actual machine tool and the measurement result shows quick assembly

Keywords： volumetric     pyramid     assembly     accuracy     calibration    

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Novel precision piezoelectric step rotary actuator

LIU Jianfang, YANG Zhigang, ZHAO Hongwei, CHENG Guangming

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 356-360 doi: 10.1007/s11465-007-0062-2

Abstract: A novel piezoelectric (PZT) precision step rotary actuator was developed on the basis of PZT technologyuniformly distributed thin flexible hinge to solve problems such as ineffective anchoring/loosening, low stepcharacterized by high frequency (30 Hz), high speed (380 μrad/s), large travel (>270º), high resolution (1 μrad/stepIt greatly improves the ability to drive the existing PZT step rotary actuator.

Keywords： developed     stability     ineffective anchoring/loosening     technology     piezoelectric    

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A step forward in laparoscopic hepatectomy: comments on “Expert Consensus on Laparoscopic Hepatectomy

Eric C.H. Lai

Frontiers of Medicine 2013, Volume 7, Issue 4,   Pages 520-522 doi: 10.1007/s11684-013-0302-2

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Nanopositioning and Nonlinearity Compensation for Step Imprint Lithography Tool

LU Bing-heng, LIU Hong-zhong, DING Yu-cheng, WANG Li, QIU Zhi-hui

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 6-13 doi: 10.1007/s11465-005-0003-x

Abstract:

In this paper, the motion mode and nanopositioning accuracy in the step imprinting lithography processThe innovation of this driving method is that the motion locus is monotone, nonoscillatory, and a multistepprove that this nonlinearity compensation is very effective and the positioning accuracy during the step

Keywords： different     nonoscillatory     nonlinearity     integral derivative     positioning    

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The design of double line five step ship-lock of Three Gorges Project

Niu Xingqiang,Tong Di,Song Weibang

Strategic Study of Chinese Academy of Engineering 2011, Volume 13, Issue 7,   Pages 85-90

Abstract:

The general design and layout of the double line five step ship lock

Keywords： Three Gorges Project     double-line five-step     design of ship-lock    

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Design of hydraulic resonance of pulsed water - jet

Pu Jianing,Chen Ming

Strategic Study of Chinese Academy of Engineering 2009, Volume 11, Issue 2,   Pages 36-42

Abstract: with characteristics finite difference equations of hydraulic transient and solved by variable time stepmethod .

Keywords： pulsed water- jet     hydraulic resonance     method of characteristics     variable time step method     Matlab    

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concentration of carboxymethyl cellulose on morphology of hydroxyapatite nanoparticles as prepared with one-stepwet chemical method

Ruiqiang LIU,Rattan LAL

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 804-812 doi: 10.1007/s11783-015-0785-y

Abstract: Nano-sized apatite particles (nAP) synthesized with carboxymethyl cellulose (CMC) have shown great application potentials in in situ heavy metal remediation. However, differences in CMC’s properties effects on the size of nAP produced are not well understood. In this paper, two types of CMC, with respective molecular weights (MW) of ~120000 and ~240000 Dalton or respective polymerization degrees of 500 (CMC-500) and 1050 (CMC-1050), were studied in a concentration range of 0.05%–0.5% (w/w) for nAP synthesis. Morphology of the particles was characterized with transmission electron microscopy (TEM). Results showed that 0.05% CMC-500 solution gave an average particle size of 148.7±134.9 nm, 0.25% CMC-500 solution produced particles of 21.8±20.4 nm, and, 0.5% CMC-500 solution contained particles of 15.8±7.7 nm. In comparison, 0.05% CMC-1050 solution produced nanoparticles of 6.8±3.2 nm, 0.25% CMC-1050 produced smaller nAP of 4.3±3.2 nm, and 0.5% CMC-1050 synthesized the smallest nanoparticles in this study, with an average diameter of 3.0±2.1 nm. Chemical composition of the products was identified with X-ray diffraction (XRD) as pure hydroxyapatite. Interactions between nAP and CMC were discussed with help of attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopic data. This study showed that CMC at higher concentration as well as higher MW facilitated to produce finer nanoparticles, showing that nAP size could be manipulated by selecting appropriate CMC MW and/or applying appropriate CMC concentration.

Keywords： nanotechnology     nanoparticles     apatite     carboxymethyl cellulose (CMC)     particle size    

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Title Author Date Type Operation

On Step by Step Method in Developing Aero-Engines

Wen Junfeng

Journal Article

One-step synthesis of recoverable CuCo

Tongzhou Lu, Yongzheng Zhang, Chun Cheng, Yanbin Wang, Yongming Zhu

Journal Article

Analysis of flow over backward facing step with transition

Dwarikanath RATHA,Arindam SARKAR

Journal Article

ApipelinedReed-Solomon decoder based on a modified step-by-step algorithm

Xing-ru PENG,Wei ZHANG,Yan-yan LIU

Journal Article

Microplastics removal strategies: A step toward finding the solution

Journal Article

Practical consideration for design and optimization of the step feed process

Shijian GE, Yongzhen PENG, Congcong LU, Shuying WANG

Journal Article

One-step synthesis of

Kuiyi YOU, Fangfang ZHAO, Xueyan LONG, Pingle LIU, Qiuhong AI, Hean LUO

Journal Article

Denitrification and phosphorus uptake by DPAOs using nitrite as an electron acceptor by step-feed strategies

Bin MA, Shuying WANG, Guibing ZHU, Shijian GE, Junmin WANG, Nanqi Ren, Yongzhen PENG

Journal Article

Error measurement and assemble error correction of a 3D-step-gauge

MAO Xinyong, LI Bin, SHI Hanmin, LIU Hongqi, LI Xi, LI Peigen

Journal Article

Novel precision piezoelectric step rotary actuator

LIU Jianfang, YANG Zhigang, ZHAO Hongwei, CHENG Guangming

Journal Article

A step forward in laparoscopic hepatectomy: comments on “Expert Consensus on Laparoscopic Hepatectomy

Eric C.H. Lai

Journal Article

Nanopositioning and Nonlinearity Compensation for Step Imprint Lithography Tool

LU Bing-heng, LIU Hong-zhong, DING Yu-cheng, WANG Li, QIU Zhi-hui

Journal Article

The design of double line five step ship-lock of Three Gorges Project

Niu Xingqiang,Tong Di,Song Weibang

Journal Article

Design of hydraulic resonance of pulsed water - jet

Pu Jianing,Chen Ming

Journal Article

concentration of carboxymethyl cellulose on morphology of hydroxyapatite nanoparticles as prepared with one-stepwet chemical method

Ruiqiang LIU,Rattan LAL

Journal Article