The actual road diesel emissions of heavy-duty vehicle is very high, which has been a concern around the world. In 2018, Chinese government promulgated "China VI" regulations containing real-driving emission test requirements and limits, requiring manufacturers to effectively control meet China VI. This article takes tractor equipped with engine as research object, performs tests after loading ...

Purpose. Development of a mathematical model heavy loaded gear transmission with self-aligning drive gear; evaluation the dynamic load on in alignment process. Methodology. The calculation schematic and equations relative motion are formed using methods rigid body dynamics. Analytical expressions for self-alignment time, collision velocity during factor obtained by integrating an ordinary diffe...

INTRODUCTION In Western Africa, women continue performing heavy physical work that includes carrying loads on their heads for domestic and commercial tasks during pregnancy. Due to important anatomical changes such as a higher trunk mass and stretching of the abdominal muscles, the loads on the spine and lower extremities may increase during lifting/lowering tasks. Pregnant women may adapt to t...

In radio access networks, the base stations’ (BSs) power consumption does not merely depend on the traffic loads within its coverage. The auxiliary devices, especially the cooling system in BSs, contribute to significant energy exhaustion. As the traffic loads fluctuate spatially and temporally, the BSs consequently suffer from heavy energy wastage when the traffic loads of their coverage are l...

Over the past twenty years; road traffic (both passenger and freight) has grown significantly in Pakistan. Higher axle loads and repetitions have resulted in premature rutting of flexible pavements. Rutting, in the form of shear flow is a typical distress that mainly attributed to increased tire pressure, high temperature and heavy axle loads. Consequently, National Highway Authority (NHA), Pak...

With resistance exercise, greater intensity typically elicits increased energy expenditure, but heavier loads require that the lifter perform more sets of fewer repetitions, which alters the kilograms lifted per set. Thus, the effect of exercise-intensity on energy expenditure has yielded varying results, especially with explosive resistance exercise. This study was designed to examine the effe...

STUDY DESIGN Feasibility study on the acquisition of lumbar spine kinematic data from upright magnetic resonance images obtained under heavy load carrying conditions. OBJECTIVE To characterize the effect of the load on spinal kinematics of active Marines under typical load carrying conditions from a macroscopic and lumbar-level approach in active-duty US Marines. SUMMARY OF BACKGROUND DATA ...