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561
Hercule, le lion et le cheval : les bronzes romains du puits 269 de Châteaumeillant/Mediolanum (Cher)
Published 2015-12-01“…It included nearly 6 000 diverse fragments, including ceramics, animal bones, defixionum tabellae and the remains of a four-wheel cart. Amongst these, four exceptional bronze objects were discovered an oinochoe (wine jug) with a trefoil spout, the front part of a chest, a horse’s head featuring a long pouring spout and a solid bronze lion with silver-incrusted eyes. …”
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562
Spontaneous Physical Activity Downregulates Pax7 in Cancer Cachexia
Published 2016-01-01“…To verify if physical activity affects Pax7 expression, we hosted control and C26-bearing mice in wheel-equipped cages and we found that voluntary wheel running downregulated Pax7 expression in muscles from tumor-bearing mice. …”
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563
Event-Based Slip Estimation Framework for Space Rovers Traversing Soft Terrains
Published 2025-01-01“…Specifically, we generate the data directly from real-time wheel traces at varied light conditions and motion patterns and then propose a framework to estimate the slip. …”
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564
Long-Term Dietary Nitrate Supplementation Does Not Prevent Development of the Metabolic Syndrome in Mice Fed a High-Fat Diet
Published 2018-01-01“…A subset of mice (5/group) underwent running wheel assessment. At the end of the treatment period, all mice underwent fasting glucose tolerance testing. …”
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565
Developing an Evidence- and Theory-Informed Mother-Daughter mHealth Intervention Prototype Targeting Physical Activity in Preteen Girls of Low Socioeconomic Position: Multiphase Co...
Published 2025-01-01“…MethodsThe intervention prototype was developed in accordance with the United Kingdom Medical Research Council framework, the Behaviour Change Wheel, the Theoretical Domains Framework, and the Behaviour Change Techniques Ontology. …”
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566
Comprehensive Error Modeling and Analysis of Face Gear NC Grinding Machine based on Multi-body System Theory
Published 2015-01-01“…By using the theory of multi-body system and Denavit-Hartenberg homogeneous coordinate transformation,the geometric error and thermal error of face gear NC grinding machine is analyzed.According to the principle of face gear meshing and production mechanism of the grinding error,the mathematic model of comprehensive error contains geometric error and thermal error of the face gear NC grinding machine tool is established.Based on the little error assumption and using Matlab software,the error expression which contains six degrees of freedom is got,additionally,the relationship between the six degrees of freedom and six errors which produced by the grinding wheel spindle movement is analyzed and validated.The basis for improve the machining accuracy of gear and error modeling is provided.…”
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567
Calculation and Analysis of Power Loss in the Drive Axle of High-power Loaders
Published 2024-10-01“…A platform for calculating the power loss of the drive axle including the main reducer, the brake and the wheel-edge reducer was constructed in the Matlab platform, and the distribution of various power losses in the drive axle was obtained, while the accuracy of the calculation platform was verified accordingly through experiments. …”
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568
Modeling and Finite Element Analysis of Hypoid Gear Cutting by Completed Method
Published 2017-01-01“…The tooth surface modeling,cutting simulation and finite element analysis of hypoid gears cut by the completed method is studied,which the wheel gear is cut by the format method while the gear is generated by the duplex helical method. …”
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569
VIBRATION PERFORMANCE ENGINEERING OPTIMIZATION FOR INTERNAL COMBUSTION FORKLIFT TRUCK STEERING SYSTEM BASED ON UNIFORM DESIGN
Published 2016-01-01“…The vibration optimum design was put forward to reduce the vibration of steering wheel by the method of Uniform Design. the test results show that the stiffness of improved steering system is increased and the vibration is decreased obviously on the basis of the invariability of costs,especially when the engine at low speed,the acceleration of vibration on direction x,y,z are reduced 83. 8%,90. 3%,83. 7% respectively. …”
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570
MECHANICAL SIMULATION RESEARCH ON IN SITU STEERING OF AUTOMATIC STEERING VEHICLE FOR HANDLING SAFETY VALVE BASED ON ADAMS
Published 2022-01-01“…The steering motion under different wheel ground friction coefficient, steering acceleration time and eccentricity is simulated for many times. …”
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571
Research of the Residual Stress Generation and Influence Factor of Grinding Tooth Surface of Spiral Bevel Gear
Published 2015-01-01“…The residual stress of spiral bevel gear on the tooth surface is produce by the comprehensive effect of various factors of grinding conditions.The mathematical model of the grinding basic parameters of the effects on grinding residual stress,grinding heat and grinding force.Based on the finite element 3D model of single tooth,the finite element simulation and analysis of residual stress of spiral bevel gear grinding,and the test shows this method is feasible.The results show the residual stress present in the spiral bevel gear tooth surface,while the residual tensile stress in the tooth,the grinding residual stress is connected with grinding depth,wheel speed,extended speed and grinding fluid.The reducing of grinding residual stress can effectively prevent grinding cracks.…”
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572
Research on Contact Stiffness of Cycloid-pin Gear based on Monte Carlo Method
Published 2021-02-01“…Taking RV-40E reducer of industrial robot as an example, the calculation example shows that the contact stiffness of cycloid gear will be changed if the gear tooth profile is modified for cycloid gear, and the contact stiffness of the cycloid-pin gear wheel will first decrease, then increase and then decrease with the increase of the amount of modification.…”
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573
Research of Prediction Method of Automobile Synchronous Belt Transmission Noise based on Orthogonal Test
Published 2018-01-01“…The noise orthogonal test of the automotive synchronous belt transmission system is carried out based on two wheels of unloaded test method. The influence law of the three parameters of the active wheel speed,synchronous belt bandwidth and tensioning force on the synchronous belt transmission noise is analyzed systematically. …”
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574
PIECEWISE MODIFICATION METHODS OF CYCLOIDAL GEAR IN RV REDUCER BASED ON THE FORM GRINDING TECHNOLOGY
Published 2020-01-01“…Form gear grinding technology has characters of high-accuracy,it’s grinding wheel can be modified flexibly,and replaces generating method gradually. …”
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575
SATELLITE HIGHT SPEED ROTOR-EQUIPMENT LAYOUT OPTIMIZATION & STIMULATION FOR REDUCING STATIC UNBALANCE DISTURBANCE
Published 2018-01-01“…Momentum wheel、CMG etc high speed rator-equipmentsareimportantnoiseoriginswhich haveabadinfluence on in-orbit satellite stability. …”
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576
Forming Defects Analysis and Process Setting of Hot Rolling Technology of Hypoid Gear
Published 2020-09-01“…A theoretical analysis of the forming defect in the hot rolling forming process of a hypoid gear wheel is performed. It is found that defects occur during the hot rolling process, such as “lugs”. …”
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577
Neural Sliding Mode Adaptive PD Tracking Control of Omnidirectional Mobile Robots
Published 2023-11-01“…A proportional plus derivative (PD) adaptive tracking control strategy based on neural sliding mode is proposed for the interference of unknown factors in the mathematical model of four-wheel omnidirectional robots. Firstly, the dynamics model of the robot is analyzed. …”
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578
Study on Gravity Compensation of RCM Mechanism of Slave Manipulator
Published 2021-06-01“…In order to improve the positioning accuracy and motion stability of endoscopy surgery robot with remote motion center (RCM) of slave manipulator,the equivalent centroid position of the component is obtained by dynamic equivalence of slave manipulator,and the gravity compensation of the manipulator is carried out by the pull spring-rope wheel. Then the dynamic model of RCM mechanism from the slave manipulator is established according to the Lagrange equation,and the gravity compensation is carried out by the method of calculating moment. …”
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579
Study on the Design of Tall Building Escape Device based on Escapement Mechanism
Published 2016-01-01“…Through alternate engage of the escapement wheel and escapement fork,the escape device based on escapement mechanism can release uniformly gravitational potential energy of body to make the body land safely to the ground in a certain average speed. …”
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580
Design of a New Type of Automatic Stair Climbing Wheelchair
Published 2015-01-01“…A new type of automatic stair climbing wheelchair can helps the disabled walking up and down the stairs and the ground is designed.By adopting the leg structure and using the mechanical foot and wheel bearing alternately in the up and down the stairs equipment,the process of up and down the stairs is simulated.The fine-tune mechanism which can be used to adjust seat angle,keep the seats level all the time is set.The change of the gravity center in the process of up and down the stairs is analyzed,the results show that the design of wheelchair is reasonable,a disabled people can use it up and down the stairs instead of walking.…”
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