2 Requirements for Ground Simulation 5 2.1 Similarity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.1 General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.2 Blunt Body Flows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.3 Instrumentation...

The present study aimed to evaluate the effects of dietary soybean hull supplementation on the growth performance and ammonia gas emission from excreta of fattening pigs. Six crossbreed (M×Y×B) fattening pigs were assigned to two dietary treatments, as control (no soybean hulls added) and experiment (10% soybean hulls added) groups. There was no significant difference in the results of growth p...

Gas holdup, mixing, liquid circulation and gas–liquid oxygen transfer were characterized in a large (∼1.5 m3) draft-tube airlift bioreactor agitated with Prochem® hydrofoil impellers placed in the draft-tube. Measurements were made in water and in cellulose fiber slurries that resembled broths of mycelial microfungi. Use of mechanical agitation generally enhanced mixing performance and the oxyg...

Climate catastrophes, which many times occurred in the geological past, caused the extinction of large or small populations of animals and plants. Changes in the terrestrial and marine biota caused by the catastrophic climate changes undoubtedly resulted in considerable fluctuations in global carbon cycle and atmospheric gas composition. Primarily, carbon dioxide and other greenhouse gas conten...

The objective of this experiment was to evaluate the effects of adding cassava scrapings on gas and effluent losses, dry matter recovery, pH, contents of N-NH3, organic acids and volatile fatty acids and the bromatological composition of elephant grass silages. It was used a randomized complete design, with four levels of cassava scrapings (0, 7, 15 or 30% natural matter) each one with four rep...