Innovation in Sustainable Engineering Design Essay

Innovation in Sustainable Engineering Design - Essay Example The political powers have played key roles in the share of the oil products. In addition, international environmental policies have demanded that there be a reduction in the emission of greenhouse gasses. Hydrogen and hydrogen-powered fuel cells are the better options as a means of achieving alternative sources of power. A fuel cell is concerned with converting chemical energy that is present in a fuel to be emitted as electricity. The process demands the use of oxygen. Hydrogen can be produced separately from varying components available naturally. The chemical processes that take place in a fuel cell demand a continuous supply of fuel and oxygen in order to sustain the production of electricity. The most direct driver for clean energy sources, those are safe, secure and reliable amidst this economic competition is worth investing. The needs that the projected source should meet include the mitigation of changes in the climatic conditions, greatly reduce the amount of toxic levels of pollutants and set forth a clear plan for the ever-dwindling oil reserves. The above results must for some reasons be met without which the effects will be felt in the economy, the health aspects in societies and the environmental consideration. The efficiency in the use of energy, in line with a focus on the supply, and an inclination on the growing proportion of carbon-free sources is highly encouraged. To achieve objectives to power elaborated above, it is essential that hydrogen and electricity be ventured into to determine one of the best approaches to meet customer, economic and environmental needs. Hydrogen is regarded as an energy carrier. Hydrogen has regenerative characteristics becaus e they can be produced from nuclear available sources, and the fossil-based energy system made use in the conversion. Fuel cells achieve use in portable devices like mobile phones, motor vehicles and for heating purposes in power generators considered in

Peer-reviewed journal article Essay Example | Topics and Well Written Essays - 1000 words

Peer-reviewed journal article - Essay Example In this study, the authors predict that exercise-induced arterial hypertension might portend negative influences on the athlete’s cardiac function, while it might also play a significant role in the exercise induced cardiac fatigue. There is a significant association between endurance sport and cardiac injury, where long-term training could result in myocardial fibrosis, arterial fibrillation, arrhythmias, and sudden cardiac arrest (Leischik et al., 2014). The authors selected a sample of (n=51) male triathletes who had either completed the long distance Ironman triathlon (n=34) or the middle distance Ironman triathlon (n=17). The participants were also selected on the basis of having completed two years of training. The study used spiroergometry and echocardiography in determining the steady state blood pressure, anaerobic/aerobic thresholds, and the left ventricular mass of the selected participants (Leischik et al., 2014). The probability of hypertrophy and elevated blood pressure among the participants were calculated using odds ration analysis. Each triathlete was assessed in 2011 and 2012 using echocardiography and spiroergometry in succession. The spiroergometry involved a phased stress test after successful volume and gas calibration between the phases. The echocardiographic analysis was conducted using the American Society of Echocardiography recommendations for muscle mass and the modified Simpson method for ESV and EDV (Lei schik et al., 2014). The authors actually found that myocardial hypertrophy is dependent on exercise-induced arterial hypertension, confirming that there was a hypertensive response in athletes as a result of exercise. The athletes with exercise-induced arterial hypertension also showed increased left ventricular mass at 205g/m2, especially in comparison to athletes without exaggerated response in BP to exercise who had a left ventricular mass of 143g/m2 (Leischik et al, 2014). In addition, the findings also show that systolic