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21781
MULTI-OBJECTIVE OPTIMIZATION DESIGN OF ROADHEADER’S CUTTING HEAD BASED ON THE GA
Published 2018-01-01“…In order to improve the dynamic reliability of the roadheader,the roadheader’s rigid-flexible coupled model was established based on virtual prototyp,dynamic reliability analysis was done on the rotary table of different structural parameters,evaluation function was established based on mechanical optimization design theory,the function’s design variables was half cone angle,helix Angle and cutting line spacing, the function’s objective function was the minimization of maximum equivalent stress as the objective function.The cutting head’s optimal structural parameters was obtained by genetic algorithm.Based on the cutting productivity and rotary table equivalent stress, the optimal yawing speed was obtained by optimized multi-objective.The results shows that after two optimizations,rotary table maximum stress is decreased 18.495 MPa,the fatigue life is improved from 3.067 E4 to 3.326 E6,productivity is improved 18.6 t/h,prediction error is less than 1.3%,meet the design requirement.This method provides data support for the structure and kinematic parameters of cutting head,provides a new method for the optimization design of heavy complicated mechanical equipment.…”
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21782
Torsional Modeling of Reinforced Concrete Beam–Column Joint Retrofitted by Aramid Fiber—Experimental and Numerical Analysis
Published 2023-01-01“…The performance of structural composites during loading has always been a concern for the designers and construction industry since the reinforced concrete structure was discovered. …”
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21783
Design and Analysis of Thick Gripper Inspired by Origami
Published 2023-12-01“…This study provides an important idea and reference for the research of deployable structure and grippers.…”
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21784
Evolution of local heterogeneity towards flat free energy landscape: Optimization of piezoelectric response in PNN-PZ-PT at morphotropic phase boundary
Published 2025-06-01“…A more exotic and technologically appealing phase is unlocked when ternary-based morphotropic phase boundary compositions are formulated via revisiting the thermal and compositional stability. Local structure heterogeneity is another generic route towards optimization of the piezoelectric performance via rare earth doping, as rare-earth doping introduces the local structural distortions. …”
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21785
Mechanical properties and crack propagation law of coal under different CO2 adsorption time
Published 2024-12-01“…The structural deformation caused by CO2 adsorption has a significant effect on the stability of coal seam. …”
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21786
Outcomes of psychiatric interviews and self-rated symptom scales in people on sick leave for common mental disorders: an observational study
Published 2022-06-01“…Objectives To investigate the correspondence between diagnoses on sick leave certificates and diagnoses made in structured psychiatric interviews. Secondary aims were to investigate length of sick leave by diagnoses on sick leave certificates, diagnoses made in structured interviews and symptom severity.Design Observational study consisting of a secondary analysis of data from a randomised controlled trial and an observational study.Setting The regions of Stockholm and Västra Götaland, Sweden.Participants 480 people on sick leave for common mental disorders.Interventions Participants were examined with structured psychiatric interviews and self-rated symptom severity scales.Outcome measures (1) Sick leave certificate diagnoses, (2) diagnoses from the Mini International Neuropsychiatric Interview and the Self-rated Stress-Induced Exhaustion Disorder (SED) Instrument (s-ED), (3) symptom severity (Montgomery-Asberg Depression Rating Scale-self-rating version and the Karolinska Exhaustion Disorder Scale) and (4) number of sick leave days.Results There was little correspondence between diagnoses on sick leave certificates and diagnoses made in structured psychiatric interviews. …”
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21787
Evolutionary dynamics of mitochondrial genomes and intracellular transfers among diploid and allopolyploid cotton species
Published 2025-01-01“…A graph-based mitogenome assembly method revealed more alternative structural conformations than previously recognized, some of which confirmed the mitogenome structure reported in earlier studies on cotton. …”
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21788
Numerical Modelling of Building Vibrations due to Railway Traffic: Analysis of the Mitigation Capacity of a Wave Barrier
Published 2017-01-01“…Moreover, the mitigation capacity of a wave barrier acting as a source isolation is assessed by comparing vibration levels registered in several points of the building structure with and without the barrier. In this regard, the wave barrier is found to effectively reduce vibration in both the soil and the structure.…”
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21789
Damage Detection in Different Types of 3D Asymmetric Buildings Using Vibration Characteristics
Published 2021-01-01“…Lastly, the dynamic behavior of three asymmetric building instances, including a 10-storey L-shaped structure, a 10-storey setback structure, and a 6-storey reinforced concrete structure with an unsymmetrical distribution of columns, was studied under five different damage scenarios. …”
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21790
Research on the influence of g-C3N4 microstructure changes on the efficiency of visible light photocatalytic degradation
Published 2025-09-01“…In this study, we combined first-principles calculations and the structure-function relationship to predict a high-performance catalyst. …”
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21791
Is Per Capita Real GDP Stationary in G-7 Countries? New Evidence from A Fourier Panel Unit Root Test
Published 2021-11-01“…Accordingly, the aim of this study is to investigate whether per capita real GDP in G-7 countries followed a stationary process between 1970-2019 with a stronger unit-root test (BCIPS) that takes into consideration cross-section dependence, multi-factor structure, and structural changes. Empirical results reveal that per capita real GDP for G-7 countries has a stationary structure. …”
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21792
Uncover the Underlying Mechanism of Drug-Induced Myopathy by Using Systems Biology Approaches
Published 2017-01-01“…In this study, we curated the comprehensive DIM drug list based on structured labeling products (SPLs) and carried out the analysis based on chemical structure space, drug protein interaction, side effect space, and transcriptomic profiling space. …”
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21793
Effect of Oregano and Marjoram Essential Oils on the Physical and Antimicrobial Properties of Chitosan Based Systems
Published 2017-01-01“…The effect of two essential oils (EOs), from Origanum vulgare and Origanum majorana, their structural properties, and concentration on physical and antimicrobial characteristics of chitosan based solutions as well as films was investigated. …”
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21794
Modelling of phase equilibria in the Hf-V system below room temperature
Published 2017-01-01“…Phase transformation from orthorhombic HfV2 structure to cubic C15 Laves phase structure, which occurs during heating at about 114 K, is well known. …”
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21795
Measurements of Group Delay and Chromatic Dispersion of Hollow-Core Fiber Using a Frequency Domain Method
Published 2025-01-01“…We measured hollow-core fibers with a five-capillary structure and a six-capillary structure. We obtained the absolute group delay as well as the chromatic dispersion information. …”
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21796
River community agency in mitigating disaster risk
Published 2025-01-01“…The agency pattern performed consists of structural and cultural agencies. Structural pattern gives emphasis on actions related to the attempt of restoring one of river’s functions as disaster organizer. …”
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21797
Using Topomer Comparative Molecular Field Analysis to Elucidate Activity Differences of Aminomethylenethiophene Derivatives as Lysyl Oxidase Inhibitors: Implications for Rational D...
Published 2020-01-01“…Topomer comparative molecular field analysis (topomer CoMFA) is applied to the quantitative structure-activity relationship (QSAR) study of aminomethylenethiophene (AMT) derivatives as lysyl oxidase (LOX) inhibitors. …”
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21798
Characterization of Vertical Response of Asphalt Trackbed Concrete in Railway Substructure to External Loads
Published 2020-01-01“…Optimizing the dynamic responses of a slab track system is a key aspect to improve the quality of a railway track structure. In this paper, numerical modelling and simulation of vertical dynamics of the railway track structure engaging the asphalt concrete in substructures were carried out. …”
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21799
Analytical Evaluation of Reinforced Concrete Pier and Cast-in-Steel-Shell Pile Connection Behavior considering Steel-Concrete Interface
Published 2016-01-01“…In practice, the steel casing is not considered in the structural design and the pile is assumed to be an RC member. …”
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21800
Neodymium-doped SnS nanomaterials: ultrasound-assisted synthesis, characterization, and investigation of its physical properties
Published 2024-04-01“…Based on SEM images, the morphology of the prepared SnS was crystalline and changed to a nanoflower structure after Nd doping. After examining the surface morphology and structure of the synthesized samples, diffuse reflectance spectroscopy (DRS) and 4-probe techniques were employed to study the optical properties and electrical conductivity of these compounds. …”
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