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Optimization of aero-engine pipeline for avoiding vibration based on length adjustment of straight-line

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1,   Pages 11-11 doi: 10.1007/s11465-021-0667-x

Abstract: In this paper, a typical spatial pipeline is taken as the research object, the length of straight-lineThe relationship between straight-line segment length and parameters that determine the geometric characteristicsBased on the analysis of the influence of straight-line segment length on the vibration characteristicsdeveloped optimization method can obtain the optimal single value or interval of the straight-line segment lengthefficiency of the golden section algorithm is remarkably higher than that of the genetic algorithm for length

Keywords： length adjustment     spatial pipeline     aero-engine     vibration avoidance optimization     genetic algorithm    

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Impact of energy structure adjustment on air quality: a case study in Beijing, China

Bin ZHAO, Jiayu XU, Jiming HAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 378-390 doi: 10.1007/s11783-011-0357-8

Abstract: Energy consumption is a major cause of air pollution in Beijing, and the adjustment of the energy structureIn this paper, we explored the future trend of energy structure adjustment in Beijing till 2020, designedBy implementing this systematic energy structure adjustment, the emissions of PM , PM , SO , NO , and2020 resemble each other, indicating that the potential of air quality improvement due to structure adjustmentExcept for energy structure adjustment, it is necessary to take further measures to ensure the attainment

Keywords： Beijing     energy structure adjustment     air quality     Community Multiscale Air Quality Model (CMAQ)     scenario    

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Effects of slip length and hydraulic diameter on hydraulic entrance length of microchannels with superhydrophobic

Wenchi GONG, Jun SHEN, Wei DAI, Zeng DENG, Xueqiang DONG, Maoqiong GONG

Frontiers in Energy 2020, Volume 14, Issue 1,   Pages 127-138 doi: 10.1007/s11708-020-0661-8

Abstract: This paper investigated effects of slip length and hydraulic diameter on the hydraulic entrance lengthIt is found that superhydrophobic microchannels have a longer hydraulic entrance length than that ofThe dimensionless hydraulic entrance length slightly increases with the increasing slip length at approximatelyA new correlation to predict the entrance length in square microchannels with different slip lengths

Keywords： laminar flow     hydraulic entrance length     super hydrophobic surface     slip length     hydraulic diameter    

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Structural behavior of intermediate length cold-formed steel rack columns with C-stitches

M. ANBARASU, Mahmud ASHRAF

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 937-949 doi: 10.1007/s11709-019-0528-4

Abstract: presents an experimental and numerical investigation on the strength and performance of intermediate lengthused to carry out a parametric study to examine changes in structural response due to variations in length

Keywords： cold-formed steel columns     C-stitches     intermediate length columns     distortional buckling    

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Secondary transfer length and residual prestress of fractured strand in post-tensioned concrete beams

Frontiers of Structural and Civil Engineering   Pages 388-400 doi: 10.1007/s11709-022-0809-1

Abstract: post-tensioned concrete beams to explore the effects of different fracture positions on secondary transfer lengthA numerical model is developed and used to predict the secondary transfer length and residual prestressfractured strand can be re-anchored in concrete through the secondary anchorage, and the secondary transfer lengthThe residual prestress of fractured strand increases gradually in the secondary transfer length, and

Keywords： post-tensioned concrete beams     strand fracture     secondary transfer length     residual prestress    

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Modelling of dynamic contact length in rail grinding process

Shaodan ZHI,Jianyong LI,A. M. ZAREMBSKI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 242-248 doi: 10.1007/s11465-014-0305-y

Abstract: First of all, it’s important to analyze the contact length between the grinding stone and the rail, because the contact length is a critical parameter to measure the grinding capabilities of stones.Therefore the theoretical model for contact length is developed based on the geometrical analysis.

Keywords： rail grinding     contact length     dynamic model     Hamiltonian system     grinding stone     rail grinding car    

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Association between telomere length and survival in cancer patients: a meta-analysis and review of literature

Xinsen Xu,Kai Qu,Qing Pang,Zhixin Wang,Yanyan Zhou,Chang Liu

Frontiers of Medicine 2016, Volume 10, Issue 2,   Pages 191-203 doi: 10.1007/s11684-016-0450-2

Abstract:

The relationship between telomere length and cancer survival has been widely studied.A total of 29 studies evaluated telomere length in the peripheral blood; 22 studies evaluated telomerelength in the tumor tissue.First, in the peripheral blood studies, for solid tumor patients with shortened telomere length, thepatients with lower telomere length ratios, the combined HRs were 0.66 (95%CI, 0.53–0.83) and

Keywords： telomere     survival     cancer     meta-analysis    

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Reform of the System and Policy Adjustment on Chinese Manufacturing Industry

The Research Group for Reform of the System and Policy Adjustment on Chinese Manufacturing Industry

Strategic Study of Chinese Academy of Engineering 2015, Volume 17, Issue 7,   Pages 37-40

Abstract: powerful manufacturing industry, so it is urgent to conduct the system and mechanism reform and policy adjustment

Keywords： development of manufacturing industry     international experience     reform of the system     policy adjustment    

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The defect-length effect in corrosion detection with magnetic method for bridge cables

Qiwei ZHANG, Rongya XIN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 662-671 doi: 10.1007/s11709-018-0512-4

Abstract: An LMA defect in steel cables can be measured accurately when it is longer than a certain length.However, for defects in early stage, where the length of corrosion area is short, the MF examinationIn this study, the effect of defect length on the MF examination for corrosion detection of bridge cablesAn original analytical model to quantify the influence of defect length is proposed based on the equivalentresults show that the area loss caused by short corrosion damage will be underestimated if the defect-length

Keywords： bridge cable     corrosion detection     defect length     MF examination     quantitative evaluation    

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Industrial Structure Adjustment of Shaanxi Province under the Limited Water Resources Condition

Xiao-jun Liu,Zhen-yu Guo,Chao Ding,Han-liang Fu

Frontiers of Engineering Management 2014, Volume 1, Issue 4,   Pages 378-384 doi: 10.15302/J-FEM-2014057

Abstract: condition, indicates the direction of the industrial transformation and water consumption structural adjustment

Keywords： water resources     capacity of water resources     industrial transformation     multi-objective programming    

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New form of geodetic coordinate system taking two length quantity as coordinate parameters

Yimin SHI, Ziyang ZHU, Yeming FAN

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 1,   Pages 105-110 doi: 10.1007/s11709-009-0014-5

Abstract: The vertical and horizontal geodesic coordinates measured with length were defined as coordinate parametersThe formula for the latitudinal scale factor of length for geodetic parallel lines was derived, by which

Keywords： coordinate parameter     the first fundamental form on the ellipsoidal surface     latitudinal scale factor of length    

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Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 153-162 doi: 10.1007/s11709-007-0016-0

Abstract: technological feasibility of suspension bridges with longer spans, the static estimation of feasible span lengthtrial design of a 5 000 m suspension bridge, which is estimated as a reasonable limitation of span length, is finally conducted to respond to the tomorrow s challenge in span length of suspension bridges with

Keywords： requirement     reasonable limitation     challenge     particular     economical construction    

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Strategic Study on Agricultural Structure Adjustment in China in the New Era

Qiyou Luo, Yang Liu, Huajun Tang, Zhenya Zhou, Fei You, Mingjie Gao

Strategic Study of Chinese Academy of Engineering 2018, Volume 20, Issue 5,   Pages 31-38 doi: 10.15302/J-SSCAE-2018.05.005

Abstract: Furthermore, we elaborate the strategic conception of China’s agricultural structural adjustmentin the new era, and put forward adjustment and optimization plans for planting structure, animal husbandry

Keywords： structure adjustment     planting structure     animal husbandry structure     regional layout    

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Synthesis of Intermittent-Motion Linkages with Slight Difference in Length Between Links

CHEN Xin-bo, YU Zhen

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 76-79 doi: 10.1007/s11465-005-0007-6

Abstract: paper, (1) a new method for realizing intermittent motion, using linkages with a slight difference in length

Keywords： synthesis     useful     intermittent     intermittent-motion     traditional    

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Effect of ligand chain length on hydrophobic charge induction chromatography revealed by molecular dynamics

Lin ZHANG, Yan SUN

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 456-463 doi: 10.1007/s11705-013-1357-y

Abstract: The effect of the ligand chain length on protein behavior in HCIC was studied.The ligand chain length has a significant effect on both the probability and the irreversibility of theThe simulation results elucidated the effect of the ligand chain length, which is beneficial for the

Keywords： adsorption     desorption     irreversibility     protein conformational transition     molecular dynamics simulation    

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Title Author Date Type Operation

Optimization of aero-engine pipeline for avoiding vibration based on length adjustment of straight-line

Journal Article

Impact of energy structure adjustment on air quality: a case study in Beijing, China

Bin ZHAO, Jiayu XU, Jiming HAO

Journal Article

Effects of slip length and hydraulic diameter on hydraulic entrance length of microchannels with superhydrophobic

Wenchi GONG, Jun SHEN, Wei DAI, Zeng DENG, Xueqiang DONG, Maoqiong GONG

Journal Article

Structural behavior of intermediate length cold-formed steel rack columns with C-stitches

M. ANBARASU, Mahmud ASHRAF

Journal Article

Secondary transfer length and residual prestress of fractured strand in post-tensioned concrete beams

Journal Article

Modelling of dynamic contact length in rail grinding process

Shaodan ZHI,Jianyong LI,A. M. ZAREMBSKI

Journal Article

Association between telomere length and survival in cancer patients: a meta-analysis and review of literature

Xinsen Xu,Kai Qu,Qing Pang,Zhixin Wang,Yanyan Zhou,Chang Liu

Journal Article

Reform of the System and Policy Adjustment on Chinese Manufacturing Industry

The Research Group for Reform of the System and Policy Adjustment on Chinese Manufacturing Industry

Journal Article

The defect-length effect in corrosion detection with magnetic method for bridge cables

Qiwei ZHANG, Rongya XIN

Journal Article

Industrial Structure Adjustment of Shaanxi Province under the Limited Water Resources Condition

Xiao-jun Liu,Zhen-yu Guo,Chao Ding,Han-liang Fu

Journal Article

New form of geodetic coordinate system taking two length quantity as coordinate parameters

Yimin SHI, Ziyang ZHU, Yeming FAN

Journal Article

Aerodynamic challenges in span length of suspension bridges

XIANG Haifan, GE Yaojun

Journal Article

Strategic Study on Agricultural Structure Adjustment in China in the New Era

Qiyou Luo, Yang Liu, Huajun Tang, Zhenya Zhou, Fei You, Mingjie Gao

Journal Article

Synthesis of Intermittent-Motion Linkages with Slight Difference in Length Between Links

CHEN Xin-bo, YU Zhen

Journal Article

Effect of ligand chain length on hydrophobic charge induction chromatography revealed by molecular dynamics

Lin ZHANG, Yan SUN

Journal Article