For the requirements of portable emission measurement system (PEMS) accuracy for limits and methods emissions from light-duty vehicles(CHINA 6), based on vehicle test in steady-state conditions WLTC PEMS gaseous pollutants, mass flow rate , particle number (PN) verify measurement. The results showed that relative errors CO, CO2, NOx, fuel consumption were −5.49%, 2.53%, 10.55%, 2.09% −2.79%. PN...

Wide Bandgap devices (WBG) have led to an era of high speed and voltage operations that were not previously achievable with silicon devices. However, packaging these in the power module has been a challenge due higher switching rates which can cause several amperes displacement current flow through parasitic capacitance package thus impacting gate driver operation ability device. The severity t...

When the Artemis missions launch, NASA's Orion spacecraft (and crew as of II mission) will be exposed to deep space radiation environment beyond protection Earth's magnetosphere. Hence, it is essential characterize effects radiation, microgravity, and combination thereof on cells organisms, i.e., quantify any correlations between environment, genetic variation, induced changes in cells. To addr...

Effective and automated verification techniques able to provide assurances of performance scalability are highly demanded in the context microservices systems. In this paper, we introduce a methodology that applies specification-driven load testing learn behavior target system under multiple deployment configurations. Testing is driven by realistic workload conditions sampled production. The sa...

Purely electric sweepers are widely used in the urban sanitation industry due to their emission-free nature and ease of miniaturisation. The dust suction port is key system sweeper, improving design level sweeper can effectively improve operational performance sweeper. Using company’s self-developed Ruiqing S26 pure as research object, a CFD (Computational Fluid Dynamics) method was analyse inf...