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Trajectory planning and base attitude restoration of dual-arm free-floating space robot by enhanced bidirectional

Zongwu XIE1 , Xiaoyu ZHAO1 , Zainan JIANG1 , Haitao YANG2 , Chongyang LI1

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1, doi: 10.1007/s11465-021-0658-y

Abstract: When free-floating space robots perform space tasks, the satellite base attitude is disturbed by theThe disturbance of the base orientation may affect the communication between the space robot and theattitude variation.Simulations are carried out in the end, and the proposed method is validated in minimizing final baseattitude change and trajectory smoothness.

Keywords： free-floating space robot     dual arm     coordinated operation     base attitude restoration     bidirectional    

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Task-space position/attitude tracking control of FAST fine tuning system

QI Lin, ZHANG Hui, DUAN Guanghong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 392-399 doi: 10.1007/s11465-008-0056-8

Abstract: This paper addresses the task-space position/attitude tracking control of a suspended parallel robot,algebra, a novel model-independent task-space PD controller that ensures end-effector position and attitude

Keywords： telescope     five-hundred     end-effector     controller     simulation    

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Study of base friction simulation tests based on a complicated engineered bridge slope

Liu HE, Guang WU, Hua WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 393-397 doi: 10.1007/s11709-012-0174-6

Abstract: In this paper, a physical base friction test model of a slope is established.the slope in both its natural state and during excavation loading is qualitatively analyzed through baseThe base friction test results are then subjected to comparison and analysis using finite element numerical

Keywords： base friction test     slope stability evaluation     bridge slope    

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River restoration challenges with a specific view on hydromorphology

Jianhua LI, Stephan HOERBINGER, Clemens WEISSTEINER, Lingmin PENG, Hans Peter RAUCH

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1033-1038 doi: 10.1007/s11709-020-0665-9

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Restoration of hyper-eutrophic water with a modularized and air adjustable constructed submerged plant

Jinzhong LI, Xueju LI, Shujuan SUN, Xuegong LIU, Suiliang HUANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 4,   Pages 573-584 doi: 10.1007/s11783-011-0363-x

Abstract: A modularized and air adjustable constructed submerged plant bed (CSPB) which can be used to restore the eutrophic water is introduced in this paper. This plant bed helps hydrophyte grow under poor conditions such as frequently changed water depth, impaired water transparency, algae bloom and substantial duckweed in summer, which are not naturally suitable for growing hydrophyte. This pilot study in Waihuan River of Tianjin, China, revealed that reduction of Chemical Oxygen Demand (COD), Total Nitrogen (TN) and Total Phosphorus (TP) by the use of CSPB could be reached 30%–35%, 35%–40%, 30%–40% respectively in the growing season (from March to October) and 5%–10%, 5%–15%, 7%–20% respectively in the winter (from November to February) when the detention time was 6 d. The relationships between the concentration of COD, TN, TP and the detention time fit the first-order kinetic equation well and the coefficients of determination ( ) were all above 0.9. The attenuation coefficients k of the kinetic equation were a function of the water temperature. When the water temperature was quite low or quite high, was not significantly changed with increasing or decreasing water temperature. While when the temperature was in a moderate range, an increase or decrease of water temperature would lead to a rapid increase or decrease in .

Keywords： modularized and air adjustable constructed submerged plant bed     water purification     eco-restoration techniques    

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The Possibility of Active Attitude Control for Fuel Spray Review

Masataka Arai

Engineering 2019, Volume 5, Issue 3,   Pages 519-534 doi: 10.1016/j.eng.2019.04.010

Abstract: spray-to-spray interaction, spray-to-wall interaction, and air flow have potential as a basis for active attitudeThis article uses evidence from the literature to discuss the possibility of active spray attitude control

Keywords： Internal combustion engine     Fuel spray     Spray control     Spray behavior     Fuel injector    

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Multistage-batch bipolar membrane electrodialysis for base production from high-salinity wastewater

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 764-773 doi: 10.1007/s11705-021-2114-2

Abstract: However, the low concentration of base generated from a traditional BMED process may limit the viabilityreport an especially designed multistage-batch (two/three-stage-batch) BMED process to increase the baseconcentration by adjusting different volume ratios in the acid (Vacid), base (Vbase), and salt compartments (Vsalt).–1, which was higher than the most reported base production by BMED.

Keywords： bipolar membrane electrodialysis     multistage-batch     base production     high-salinity wastewater    

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Base editors: development and applications in biomedicine

Frontiers of Medicine 2023, Volume 17, Issue 3,   Pages 359-387 doi: 10.1007/s11684-023-1013-y

Abstract: Base editor (BE) is a gene-editing tool developed by combining the CRISPR/Cas system with an individualdeaminase, enabling precise single-base substitution in DNA or RNA without generating a DNA double-strandBase editors offer more precise and secure genome-editing effects than other conventional artificialSince the development of the two main base editors, cytosine base editors (CBEs) and adenine base editorsHere, we review the recent development of base editors, summarize their applications in the biomedical

Keywords： base editing     CBE     ABE     ADAR     DdCBE     disease model     therapeutic application    

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Thermoresponsive block copolymer supported Pt nanocatalysts for base-free aerobic oxidation of 5-hydroxymethyl

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1514-1523 doi: 10.1007/s11705-021-2092-4

Abstract: A base-free catalytic system for the aerobic oxidation of 5-hydroxymethyl-2-furfural was exploited byThe Pt nanocatalysts were well-dispersed and highly active for the base-free oxidation of 5-hydroxymethyl

Keywords： aerobic oxidation     base-free     5-hydroxymethyl-2-furfural     Pt nanoparticle     thermoresponsive block copolymer    

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Enzyme@bismuth-ellagic acid: a versatile platform for enzyme immobilization with enhanced acid-base stability

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 784-794 doi: 10.1007/s11705-022-2278-4

Abstract: biocatalysts; however, it is limited by the conditions of metal–organic framework synthesis and its acid-baseHerein, a biocatalytic platform with improved acid-base stability was constructed via a one-pot methodAfter encapsulation, the stability, especially the acid-base stability, of amyloglucosidases@bismuth-ellagic

Keywords： bismuth-ellagic acid     in situ encapsulation     enzyme@MOF biocomposites    

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Application of Cu nanoparticles as N32 base oil additives

Qiang HE, Jun YE, Hongzhao LIU, Jinling LI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 1,   Pages 93-97 doi: 10.1007/s11465-009-0083-0

Abstract: Cu nanoparticles as N32 base oil additives are studied in the paper and their structure is characterizedThe results show that N32 base oil with 0.5% Cu nanoparticle can improve the test sample contact fatiguelife than pure N32 base oil.

Keywords： Cu nanoparticle     tribological property     contact fatigue     weibull distribution    

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Extension Knowledge Base System and Its Application

Li Lixi,Li Jia

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 61-64

Abstract:

Knowledge base system (KBS) is an organization to store and manage a lot of knowledge.Finally, the feature and the frame of extension knowledge base system (EKBS) are proposed.It is composed of goal system, condition system, common knowledge base, categorized knowledge base, inferencemachine and knowledge base management system.

Keywords： extension theory     non-compatible     knowledge base    

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Strategies for Water Security and Aquatic Ecosystem Restoration in the Yangtze River Economic Belt

Hu Chunhong, Zhang Shuanghu

Strategic Study of CAE 2022, Volume 24, Issue 1,   Pages 166-175 doi: 10.15302/J-SSCAE-2022.01.018

Abstract:

Working together on protection instead of excessive development is the key strategy for promoting the high-quality development of the Yangtze River Economic Belt. It is necessary to tackle principal contradictions with targeted measures in the process of Yangtze River protection. In this paper, we analyze the major issues regarding water security and aquatic ecosystem protection in the Yangtze River Economic Belt, including the severe flood control safety situation, the serious shrinkage of suitable habitats for aquatic animals and biodiversity reduction, and the dysfunctional relationship between the Yangtze River and its connected lakes. Additional, we propose several targeted measures and strategies. The measures for improving the flood control capability are to accelerate the construction of safety projects in critical flood storage and detention areas and revise the Yangtze River Basin Flood Control Planning. The strategies for restoring the damaged aquatic ecosystem are to construct substitute habitats in the tributaries in the upper reaches of the Yangtze River, restore the connection between the Yangtze River and some former connected lakes in the middle and lower reaches, and expand the ecological operation of reservoirs. The strategies for regulating the river–lake relationship are to improve the four water systems in the north of the Dongting Lake and build floodgates at the outlet of the Poyang Lake.

Keywords： Yangtze River Economic Belt     water security     aquatic ecosystem restoration     flood control safety     habitat    

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Process study on adsorption of glycerin from saline wastewater by strong base anion resin

Haitao ZHANG, Xiaoqing MA, Xian QU, Jeanpierre Arcangeli

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 113-116 doi: 10.1007/s11705-010-0547-0

Abstract: A physicochemical method was used to adsorb glycerin in saline wastewater by strong base anion resinThen, this specific complex could be adsorbed by strong base anion resin.

Keywords： glycerin     anion resin     boric acid     wastewater     NaCl    

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Heat-spreading analysis of a heat sink base embedded with a heat pipe

B. V. BORGMEYER, H. B. MA,

Frontiers in Energy 2010, Volume 4, Issue 2,   Pages 143-148 doi: 10.1007/s11708-010-0013-1

Abstract: A simplified model predicting the heat transfer performance of a heat sink base with a high thermal conductivityinvestigation indicates that for heat sink bases with a high effective thermal conductivity, such as the base

Keywords： heat pipe     heat sink     microprocessor heat removal    

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Title Author Date Type Operation

Trajectory planning and base attitude restoration of dual-arm free-floating space robot by enhanced bidirectional

Zongwu XIE1 , Xiaoyu ZHAO1 , Zainan JIANG1 , Haitao YANG2 , Chongyang LI1

Journal Article

Task-space position/attitude tracking control of FAST fine tuning system

QI Lin, ZHANG Hui, DUAN Guanghong

Journal Article

Study of base friction simulation tests based on a complicated engineered bridge slope

Liu HE, Guang WU, Hua WANG

Journal Article

River restoration challenges with a specific view on hydromorphology

Jianhua LI, Stephan HOERBINGER, Clemens WEISSTEINER, Lingmin PENG, Hans Peter RAUCH

Journal Article

Restoration of hyper-eutrophic water with a modularized and air adjustable constructed submerged plant

Jinzhong LI, Xueju LI, Shujuan SUN, Xuegong LIU, Suiliang HUANG

Journal Article

The Possibility of Active Attitude Control for Fuel Spray

Masataka Arai

Journal Article

Multistage-batch bipolar membrane electrodialysis for base production from high-salinity wastewater

Journal Article

Base editors: development and applications in biomedicine

Journal Article

Thermoresponsive block copolymer supported Pt nanocatalysts for base-free aerobic oxidation of 5-hydroxymethyl

Journal Article

Enzyme@bismuth-ellagic acid: a versatile platform for enzyme immobilization with enhanced acid-base stability

Journal Article

Application of Cu nanoparticles as N32 base oil additives

Qiang HE, Jun YE, Hongzhao LIU, Jinling LI,

Journal Article

Extension Knowledge Base System and Its Application

Li Lixi,Li Jia

Journal Article

Strategies for Water Security and Aquatic Ecosystem Restoration in the Yangtze River Economic Belt

Hu Chunhong, Zhang Shuanghu

Journal Article

Process study on adsorption of glycerin from saline wastewater by strong base anion resin

Haitao ZHANG, Xiaoqing MA, Xian QU, Jeanpierre Arcangeli

Journal Article

Heat-spreading analysis of a heat sink base embedded with a heat pipe

B. V. BORGMEYER, H. B. MA,

Journal Article