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Effect of Banana Waste Biochar on Physiological Responses and Growth of Seashore Paspalum

Fetjah Dounia, Ainlhout Lalla Fatima Ezzahra, Ihssane Bouchaib, Bouqbis Laila

Journal of Ecological Engineering

2021

Vol. 22, nr 8

1--10

The current study aimed to evaluate the effect of banana waste biochar on the physiological traits and growth of Paspalum vaginatum under three water treatments (100%, 80%, and 60% of the water holding capacity (WHC) of the soil). A plastic pot experiment was done for the germination of paspalum vaginatum. The treatments were the addition of compost, banana waste biochar, or banana waste biochar and compost combination to the soil. We used multiple factor analysis (MFA) to reveal the relationship between the effect of banana waste biochar and the three water regimes on physiological data. The findings revealed that banana waste biochar had an important impacts on all traits under various water supply conditions. The photon yield of PSII of control treatment at three water regimes had the lowest response compared to amended treatments. Changes were observed in chlorophyll pigment among different treatments.

Methods of Estimating the Effect of Integral Motorcycle Helmets on Physiological and Psychological Performance

Bogdan A., Sudoł-Szopińska I., Łuczak A., Konarska M., Pietrowski P.

International Journal of Occupational Safety and Ergonomics

2012

Vol. 18, No. 3

329--342

This article proposes a method for a comprehensive assessment of the effect of integral motorcycle helmets on physiological and cognitive responses of motorcyclists. To verify the reliability of commonly used tests, we conducted experiments with 5 motorcyclists. We recorded changes in physiological parameters (heart rate, local skin temperature, core temperature, air temperature, relative humidity in the space between the helmet and the surface of the head, and the concentration of O2 and CO2 under the helmet) and in psychological parameters (motorcyclists’ reflexes, fatigue, perceptiveness and mood). We also studied changes in the motorcyclists' subjective sensation of thermal comfort. The results made it possible to identify reliable parameters for assessing the effect of integral helmets on performance, i.e., physiological factors (head skin temperature, internal temperature and concentration of O2 and CO2 under the helmet) and on psychomotor factors (reaction time, attention and vigilance, work performance, concentration and a subjective feeling of mood and fatigue).