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On Subtropical Anticyclone and High Temperature Drought in Relation to the Earth Nutation and Rotation

Wei Ming,OuYang Shoucheng

Strategic Study of CAE 2007, Volume 9, Issue 8,   Pages 40-46

Abstract:

In view of the effective results about the long term disaster weather prediction based on the variation of the earth rotation in the recent 10 years,  the authors try to explore the deep reason of major disaster weather with the re lationship among the earth nutation,  rotation and atmospheric change.  The relationship between the subtropical anticyclone and subtropica l easterlies is discussed,  aiming at the problem of high temperature and drought in the globe.  Further more,  the comparison analysis is made on earth nutation and the variation of rotation.  The research results show that the reasons of important disaster weather not only involre atmosphere itself,  but have some variation information of earth movement which could be used for the weather forecast.

Keywords： nutation     earth rotation     subtropical anticyclone     inverse rolling sinking     drought    

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A rolling 6U parallel mechanism

Zhihuai MIAO, Yanan YAO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1,   Pages 96-98 doi: 10.1007/s11465-011-0214-2

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Performance of inverse fluidized bed bioreactor in treating starch wastewater

M. RAJASIMMAN, C. KARTHIKEYAN

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 235-239 doi: 10.1007/s11705-009-0020-0

Abstract: Aerobic digestion of starch industry wastewater was carried out in an inverse fluidized bed bioreactor

Keywords： inverse fluidization     low-density particles     polypropylene     starch     biofilm    

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Novel probabilistic rolling regular tetrahedron mechanism

Yonghan GUAN, Yan’an YAO, Chao LIU, Ruiming LI

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 363-378 doi: 10.1007/s11465-020-0628-9

Abstract: In this study, a novel mechanism that can conduct probabilistic rolling is proposed to reach a designatedAccording to mobility and kinematic analyses, the mechanism can implement probabilistic rolling.Each rolling gait has three probable rolling directions, and the mechanism rolls in one of the threeFurthermore, the mathematical principle of probabilistic rolling is revealed in terms of probabilityTo achieve the rolling function, the design of the linear actuators is improved, and the extension ratio

Keywords： mobile mechanism     probabilistic motion     rolling mechanism     stochastic motion    

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A rolling 3-UPU parallel mechanism

Zhihuai MIAO, Yan’an YAO, Xianwen KONG

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 340-349 doi: 10.1007/s11465-013-0282-6

Abstract:

A novel rolling mechanism is proposed based on a 3-UPU parallel mechanism in this paper.The rolling mechanism is composed of two platforms connected by three UPU (universal-prismatic-universalFour rolling modes of the mechanism are discussed and simulated.The feasibility of the rolling mechanism is verified by means of a physical prototype.Finally, its terrain adaptability is enhanced through planning the rolling gaits.

Keywords： parallel mechanism     rolling mechanism     screw theory    

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Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 17-24 doi: 10.1007/s11465-018-0480-3

Abstract:

Shaft part rolling is an efficient and green near-net shaping technology offering many advantages,In this paper, the features of shaft part rolling are introduced along with the working principles oftwo main shaft part rolling technologies, namely, cross wedge rolling (CWR) and skew rolling (SR).Finally, the latest developments in shaft part rolling are presented, including SR steel balls, preciseAlthough the shaft part rolling technology has been widely used in China, it only accounts for about

Keywords： cross wedge rolling     skew rolling     near-net rolling     shaft part    

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Efficient conversion of lignin to alkylphenols over highly stable inverse spinel MnFeO catalysts

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 8,   Pages 1085-1095 doi: 10.1007/s11705-022-2236-1

Abstract: The aromatic properties of lignin make it a promising source of valuable chemicals and fuels. Developing efficient and stable catalysts to effectively convert lignin into high-value chemicals is challenging. In this work, MnFe2O4 spinel catalysts with oxygen-rich vacancies and porous distribution were synthesized by a simple solvothermal process and used to catalyze the depolymerization of lignin in an isopropanol solvent system. The specific surface area was 110.5 m2∙g–1, which substantially increased the active sites for lignin depolymerization compared to Fe3O4. The conversion of lignin reached 94%, and the selectivity of alkylphenols exceeded 90% after 5 h at 250 °C. Underpinned by characterizations, products, and density functional theory analysis, the results showed that the catalytic performance of MnFe2O4 was attributed to the composition of Mn and Fe with strong Mn–O–Fe synergy. In addition, the cycling experiments and characterization showed that the depolymerized lignin on MnFe2O4 has excellent cycling stability. Thus, our work provides valuable insights into the mechanism of lignin catalytic depolymerization and paves the way for the industrial-scale application of this process.

Keywords： lignin depolymerization     spinel     catalysts     hydrogenation    

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Research on Anthropomorphic Obstacle Avoidance Trajectory Planning for Adaptive Driving Scenarios Based on Inverse

Jian Wu,Yang Yan,Yulong Liu,Yahui Liu,

Engineering doi: 10.1016/j.eng.2023.07.018

Abstract: Subsequently, a trajectory expectation feature-matching algorithm is proposed that uses maximum entropy inverse

Keywords： Obstacle avoidance trajectory planning     Inverse reinforcement theory     Anthropomorphic     Adaptive driving    

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Precise semi-analytical inverse kinematic solution for 7-DOF offset manipulator with arm angle optimization

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 435-450 doi: 10.1007/s11465-021-0630-x

Abstract: This study proposes a high-precision, semi-analytical inverse method for EMMs.Firstly, the analytical inverse kinematic solution is established based on joint angle parameterizationSecondly, the analytical inverse kinematic solution for a non-offset spherical–roll–spherical (SRS) redundantThirdly, the error is corrected using a numerical method through the analytical inverse solution basedAfter selecting the stride and termination condition, the precise inverse solution is computed for the

Keywords： 7-DOF redundant manipulator     inverse kinematics     semi-analytical     arm angle     link offset    

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Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of

Ye GAO, Wei SUN

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 358-368 doi: 10.1007/s11465-019-0539-9

Abstract: In this study, an inverse method was developed by utilizing measured vibration data to identify the supportOn the premise of selecting initial values reasonably, an inverse identification algorithm based on sensitivity

Keywords： inverse identification     pipeline hoop     frequency response function     mechanical parameters     preload    

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Outline of Strip Rolling Technological Control Theory

Zhang Jinzhi

Strategic Study of CAE 2001, Volume 3, Issue 4,   Pages 46-55

Abstract:

Classical rolling theory, which is based on the law of the lowest resistance,the condition of constantvolume and the condition of equal flow per second,has formed a fairly integrated rolling applied technologyThis system reflects only the static law of rolling process,so it is necessary to control dynamic rollingtheory, classical rolling theory based on mechanics took the lead before the establishment of springA new theory system, which is based on fundamental rolling technology control theory, is set up.

Keywords： continuous rolling process control     tension in continuous rolling     gauge control     shape stiffness     springequation for rolling mill     comprehensive equal reserves for load distribution    

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Rolling-element bearings in China: From ancient times to the 20th century

Lie SUN,Ang LI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 33-43 doi: 10.1007/s11465-016-0373-2

Abstract:

The development of rolling-element bearings in China has spanned a long period.Based on several typical and important cases, the present article reconstructs the history of rolling-elementThe first stage represents the origin of rolling bearings in China, which remains controversial becauseAnother type of spherical thrust bearings with rolling elements, which is a key component of a traditionalMoreover, over the last 100 years, the modern rolling bearing industry was gradually established in China

Keywords： bearing movement     rolling-element bearing     China     early rolling bearings     technology transfer    

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General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0681-7

Abstract: The inverse kinematics problems of robots are usually decomposed into several Paden–Kahan subproblemsHowever, the simple combination of subproblems cannot solve all the inverse kinematics problems, andThe novel algebraic geometric (NAG) methods that obtain the general closed-form inverse kinematics forclosed-form inverse kinematics.The results verify the proposed general closed-form inverse kinematics based on the NAG methods.

Keywords： inverse kinematics     Paden–Kahan subproblems     three-joint subproblems     product of exponential     closed-form    

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A highly efficient reconfigurable rotation unit based on an inverse butterfly network Article

Chao MA, Zi-bin DAI, Wei LI, Hai-juan ZANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 11,   Pages 1784-1794 doi: 10.1631/FITEE.1601265

Abstract: The algorithm uses a self-routing characteristic to configure an inverse butterfly network.

Keywords： Rotation operations     Self-routing     Control-bit generation algorithm     Inverse butterfly network    

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simulation and analysis of periodically oscillating pressure characteristics of inviscid flow in a rolling

Yan GU, Yonglin JU

Frontiers in Energy 2012, Volume 6, Issue 1,   Pages 21-28 doi: 10.1007/s11708-012-0173-2

Abstract: in order to understand the periodically oscillating pressure characteristics of inviscid flow in the rollingThe computational model of the circular pipe flow is established with the excitated rolling motion, atFurthermore, theoretical analyses of the flow in the rolling circular pipe are conducted and the results

Keywords： pressure fluctuation     rolling     floating production storage and offloading unit for liquefied natural gas    

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Title Author Date Type Operation

On Subtropical Anticyclone and High Temperature Drought in Relation to the Earth Nutation and Rotation

Wei Ming,OuYang Shoucheng

Journal Article

A rolling 6U parallel mechanism

Zhihuai MIAO, Yanan YAO

Journal Article

Performance of inverse fluidized bed bioreactor in treating starch wastewater

M. RAJASIMMAN, C. KARTHIKEYAN

Journal Article

Novel probabilistic rolling regular tetrahedron mechanism

Yonghan GUAN, Yan’an YAO, Chao LIU, Ruiming LI

Journal Article

A rolling 3-UPU parallel mechanism

Zhihuai MIAO, Yan’an YAO, Xianwen KONG

Journal Article

Research and industrialization of near-net rolling technology used in shaft parts

Zhenghuan HU, Baoyu WANG, Zhenhua ZHENG

Journal Article

Efficient conversion of lignin to alkylphenols over highly stable inverse spinel MnFeO catalysts

Journal Article

Research on Anthropomorphic Obstacle Avoidance Trajectory Planning for Adaptive Driving Scenarios Based on Inverse

Jian Wu,Yang Yan,Yulong Liu,Yahui Liu,

Journal Article

Precise semi-analytical inverse kinematic solution for 7-DOF offset manipulator with arm angle optimization

Journal Article

Inverse identification of the mechanical parameters of a pipeline hoop and analysis of the effect of

Ye GAO, Wei SUN

Journal Article

Outline of Strip Rolling Technological Control Theory

Zhang Jinzhi

Journal Article

Rolling-element bearings in China: From ancient times to the 20th century

Lie SUN,Ang LI

Journal Article

General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Journal Article

A highly efficient reconfigurable rotation unit based on an inverse butterfly network

Chao MA, Zi-bin DAI, Wei LI, Hai-juan ZANG

Journal Article

simulation and analysis of periodically oscillating pressure characteristics of inviscid flow in a rolling

Yan GU, Yonglin JU

Journal Article