Both the swimbladder and sonic muscles of the oyster toadfish Opsanus tau (Linnaeus) increase in size with fish growth making it difficult to distinguish their relative contributions to sound production. We examined acoustics of the swimbladder independent of the sonic muscles by striking it with a piezoelectric impact hammer. Amplitude and timing characteristics of bladder sound and displaceme...

The article considers the issue of system running gear a high-speed electric train with body inclination and oscillation recovery. authors considered main suspension systems body, which are currently used. problems these were put forward. Attention is paid to use air-spring suspension. pipe VL80 locomotive construction trolley itself considered. basic criteria an estimation efficiency perspecti...

This paper introduces a novel passive suspension system for ground vehicles. This system is based on a flexible Electromagnetic Shock Absorber (EMSA). In the proposed system, efforts are made to a) select a high damping coefficient usable in a car b) determine Physical dimensions and geometry not much different from those of the mechanical shock absorbers and c) seletct EMSA weight and volume l...

We use the Covid-19 pandemic to assess whether diversification in various dimensions can protect European banks from substantial negative valuation shocks. Our results demonstrate that functional acts as an economically significant shock absorber: it mitigates banks’ stock market decline by approximately 10 percentage points. Loan portfolio also contributes dampening shock, but with a much lowe...

With regenerative braking technology reaching maturity manufacturers are studying other forms of energy regeneration, amongst these, regenerative suspension. Although there have been several regenerative shock absorber developments over the past decade, including linear-tubular electric motors and hydraulic actuator based systems, cost and complexity have delayed large scale deployment in serie...