These showed that under certain conditions a protective accretion would form at the tip of the injector, and that oxygen utilization was high, with the oxidation reactions generating sufficient heat to keep the furnace hot until the final stages of refining when the impurity levels were low.
12.
The change to the lance-based furnace increased oxygen utilization to 95 % and the cycle time was reduced to a little less than eight hours, but the grade of the dor?which could be economically produced was poor . The dor?from the new furnace still contained about 0.8 % lead and 0.4 % copper.
13.
The respiratory and cardiovascular responses monitored throughout the exposure were cough rate, ventilation rate, ventilation volume, total oxygen consumption, oxygen utilization, heart rate, arterial blood pressure, arterial blood oxygen, arterial blood carbon dioxide, arterial blood pH, hematocrit, hemoglobin, electrocardiogram, plasma ions ( calcium, magnesium, potassium, sodium, and chloride ), and osmolality.
14.
These arguments were later rebutted by further findings showing that changes in pH even greater than that caused by energy substrates do not affect the GABA-shift described in the presence of energy substrate-fortified ACSF and that the mode of action of beta-hydroxybutyrate, pyruvate and lactate ( assessed by measurement NAD ( P ) H and oxygen utilization ) was energy metabolism-related.
