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Investigating peak stresses in fitting and repair patches of buried polyethylene gas pipes

Reza KHADEMI ZAHEDI, Pouyan ALIMOURI, Hooman KHADEMI ZAHEDI, Mohammad SHISHESAZ

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 147-168 doi: 10.1007/s11709-019-0587-6

Abstract: which are used to mend the defected pipelines by performing a finite element analysis to calculate peakstress values.According to the results, the peak stress values take place in the middle of the fitting and at its internalThe maximum stress values in fitting and pipe are below the allowable stresses which shows the properMoreover, increasing the saddle fusion patch length to 12 inches reduces the maximum stress values in

Keywords： Ansys software     polyethylene     buried pipelines     polyethylene joints     polyethylene patches     peak von Misesstress     soil-pipe interaction     temperature variation    

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Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected to axial loading

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 429-447 doi: 10.1007/s11709-022-0913-2

Abstract: Subsequently, the stress−strain curves of specimens subjected to axial loading were measured., respectively, and the lateral effective stress of the different stirrups was calculated based on theMoreover, a damage-constitutive model of CAC considering the lateral stress was set up based on damageThe results indicated an increase in the stress and strain with a decrease in the stirrup spacing, andmodel had a good correlation with the measured stress−strain curves.

Keywords： coral aggregate concrete     stress−strain curves     lateral effective stress     peak stress     axial−lateral    

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Factors influencing peak bone mass gain

Xiaowei Zhu, Houfeng Zheng

Frontiers of Medicine 2021, Volume 15, Issue 1,   Pages 53-69 doi: 10.1007/s11684-020-0748-y

Abstract: Epidemiologic studies have shown that a 10% increase in peak bone mass (PBM) at the population level

Keywords： peak bone mass     children     adolescents     genetic     risk factors    

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Zero increase in peak discharge for sustainable development

Xing Fang, Junqi Li, Yongwei Gong, Xiaoning Li

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0935-5

Abstract: primarily pervious) are converted into impervious areas which lead to increases of runoff volume and peakMost of the developed countries require a zero increase in peak discharge for any land development, andThe policy of zero increase in peak discharge can be considered as historical and early stage for theWe promote and advocate the zero-increase policy on peak discharge for comprehensive stormwater management

Keywords： Stormwater management     Detention basin     Zero increase     Peak discharge     Sustainable development     Design rainfall    

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Control of peak pressures of an HCCI engine under varying swirl and operating parameters

T. KARTHIKEYA SHARMA,G. AMBA PRASAD RAO,K. MADHU MURTHY

Frontiers in Energy 2016, Volume 10, Issue 3,   Pages 337-346 doi: 10.1007/s11708-016-0401-2

Abstract: However, one of the major challenges with HCCI is the control of higher peak pressures which may damagepaper, an attempt is made to analyze computationally the effect of induction swirl in controlling the peakversion of SI and CI engines, the ECFM-3Z model with necessary modifications is used to analyze the peakexhaust gas recirculation (EGR) and equivalence ratio under different swirl ratios in controlling the peakThe results show that the swirl ratio has a considerable impact on controlling the peak pressures of

Keywords： HCCI engine     ECFM-3Z     Swirl ratio     peak pressures     engine speed     piston bowl geometry    

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Study of the Optimal Scheme for the Daily Operation of Northeastern Oil Pipeline Network Based on the Peak-valley

Cui Hui,Wu Changchun,Wu Jianglin,Sun Qingfeng

Strategic Study of CAE 2004, Volume 6, Issue 8,   Pages 69-73

Abstract: As for its operational actuality on the basis of the peak - valley price, the optimization of the dailySome fundamental rules for the optimization of the daily operation scheme based on the peak-valley price

Keywords： northeastern oil pipeline network     peak-valley price     daily operation     optimization    

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Peak CO

Sheng ZHOU, Maosheng DUAN, Zhiyi YUAN, Xunmin OU

Frontiers in Energy 2020, Volume 14, Issue 4,   Pages 740-758 doi: 10.1007/s11708-018-0558-y

Abstract: The results show that in the BAU scenario, the final energy consumption will peak at 25.93 million tonsIn the CMS scenario, the final energy will peak in 2020 at 23.47 Mtce (9% lower versus peak in the BAUIn the BAU scenario, CO emission will peak in 2025 at 70 million tons of carbon dioxide (MtCO ), andIn the CMS scenario, the peak has occurred in 2014, and 60 MtCO will be emitted in 2030.

Keywords： carbon dioxide emission     energy consumption     peak CO2 emission     low-carbon transition     Dezhou    

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A comprehensive simulator for assessing the reliability of a photovoltaic panel peak power tracking system

Nabil KAHOUL,Mourad HOUABES,Ammar NEÇAIBIA

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 170-179 doi: 10.1007/s11708-015-0353-y

Abstract: Therefore, it is a good substitute to help to test the peak power trackers of the PV system in the laboratoryThis paper describes a simple peak power trackers simulator of the PV system which has a short response

Keywords： photovoltaic module     DC-DC converter     design     maximum power point tracking (MPPT) card     microprocessor    

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An Empirical Study on China’s Energy Supply-and-Demand Model Considering Carbon Emission Peak Constraints

Jinhang Chen

Engineering 2017, Volume 3, Issue 4,   Pages 512-517 doi: 10.1016/J.ENG.2017.04.019

Abstract: rsquo;s energy supply-and-demand model and two related carbon emission scenarios, including a planned peakscenario and an advanced peak scenario, are designed taking into consideration China’s economicFinally, energy-related carbon emissions could peak in 2025 through the application of more efficientThe push toward decarbonization of the power industry is essential for reducing the peak value of carbon

Keywords： Carbon emission     Peak     Energy supply and demand     Model     Scenario    

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Energy Demand and Carbon Emission Peak Paths for the Rise of Central China

Cheng Yunhe, Dong Hongguang, Geng Jichao, He Jishan

Strategic Study of CAE 2021, Volume 23, Issue 1,   Pages 68-78 doi: 10.15302/J-SSCAE-2021.01.014

Abstract: achieve low-carbon emission, energy security, and efficient utilization of energy; a carbon emission peak

Keywords： energy revolution     rise of Central China     Kaya identity     scenario analysis     carbon emission peak    

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EFFECTS OF TRANSPORT STRESS ON THE INTESTINES INVOLVING NEURONAL NITRIC OXIDE SYNTHASE

Frontiers of Agricultural Science and Engineering   Pages 285-295 doi: 10.15302/J-FASE-2022469

Abstract:

● Transport stress declined the level of leukocytes including lymphocytes

Keywords： intestine     nNOS     nNOS-positive neurons     transport stress    

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Analysis on annealing-induced stress of blind-via TSV using FEM

Jie SHAO, Tielin SHI, Li DU, Lei SU, Xiangning LU, Guanglan LIAO

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 401-410 doi: 10.1007/s11465-017-0457-7

Abstract: However, in TSV manufacturing, thermo-mechanical stress is induced during the annealing process, oftenTop interface stress analysis on the TSV structure shows that the curvature of via openings releasesstress concentration that leads to ~60 MPa decrease of normal stresses,  Keywords： through silicon via (TSV)     annealing-induced stress     interface stress     plastic deformation     finite element    

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An investigation on stress distribution effect on multi- piezoelectric energy harvesters

Hailu YANG, Dongwei CAO

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 301-307 doi: 10.1007/s11709-017-0404-z

Abstract: The stress distribution will significantly affect the piezoelectric material performance.When the same multi piezoelectric units work together, if the stress state of the piezoelectric unitsFor uneven stress distribution, the optimal output mode is that each of the piezoelectric units rectified

Keywords： piezoelectric transducer     uneven stress     impedance matching     optimal energy output    

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The formation mechanism and the influence factor of residual stress in machining

Zhaoxu QI,Bin LI,Liangshan XIONG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 3,   Pages 265-269 doi: 10.1007/s11465-014-0311-0

Abstract: On the basis of the analytical model for residual stress, a series of simulations for residual stressorder to obtain the influences of cutting speed, depth of cut and tool edge radius on surface residual stressAnd these influences are explained from the perspective of formation mechanism of residual stress in

Keywords： residual stress     analytical model     strain     plastic     cutting parameter    

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Stress corrosion and residual stress of H2S in petrochemical special equipment

Zhang Yiliang,Xu Jinquan,Wang Yuci

Strategic Study of CAE 2009, Volume 11, Issue 8,   Pages 38-43

Abstract:

To understand the present status of the issue of H2S stressoverview containing the environment definition, test method, influence factor, evaluation standard of stresscorrosion and the material demand in H2S stress corrosion issue is accomplished.Meanwhile, a discussion of the causation, test method and elimination measure of welding residual stress

Keywords： H2S stress corrosion     operation manual     evaluation standard     welding residual stress    

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Title Author Date Type Operation

Investigating peak stresses in fitting and repair patches of buried polyethylene gas pipes

Reza KHADEMI ZAHEDI, Pouyan ALIMOURI, Hooman KHADEMI ZAHEDI, Mohammad SHISHESAZ

Journal Article

Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected to axial loading

Journal Article

Factors influencing peak bone mass gain

Xiaowei Zhu, Houfeng Zheng

Journal Article

Zero increase in peak discharge for sustainable development

Xing Fang, Junqi Li, Yongwei Gong, Xiaoning Li

Journal Article

Control of peak pressures of an HCCI engine under varying swirl and operating parameters

T. KARTHIKEYA SHARMA,G. AMBA PRASAD RAO,K. MADHU MURTHY

Journal Article

Study of the Optimal Scheme for the Daily Operation of Northeastern Oil Pipeline Network Based on the Peak-valley

Cui Hui,Wu Changchun,Wu Jianglin,Sun Qingfeng

Journal Article

Peak CO

Sheng ZHOU, Maosheng DUAN, Zhiyi YUAN, Xunmin OU

Journal Article

A comprehensive simulator for assessing the reliability of a photovoltaic panel peak power tracking system

Nabil KAHOUL,Mourad HOUABES,Ammar NEÇAIBIA

Journal Article

An Empirical Study on China’s Energy Supply-and-Demand Model Considering Carbon Emission Peak Constraints

Jinhang Chen

Journal Article

Energy Demand and Carbon Emission Peak Paths for the Rise of Central China

Cheng Yunhe, Dong Hongguang, Geng Jichao, He Jishan

Journal Article

EFFECTS OF TRANSPORT STRESS ON THE INTESTINES INVOLVING NEURONAL NITRIC OXIDE SYNTHASE

Journal Article

Analysis on annealing-induced stress of blind-via TSV using FEM

Jie SHAO, Tielin SHI, Li DU, Lei SU, Xiangning LU, Guanglan LIAO

Journal Article

An investigation on stress distribution effect on multi- piezoelectric energy harvesters

Hailu YANG, Dongwei CAO

Journal Article

The formation mechanism and the influence factor of residual stress in machining

Zhaoxu QI,Bin LI,Liangshan XIONG

Journal Article

Stress corrosion and residual stress of H2S in petrochemical special equipment

Zhang Yiliang,Xu Jinquan,Wang Yuci

Journal Article