Oxygen consumption rate calculation

Vertical Distribution. The deep-sea oxygen consumption rates calculated from ETS activity fall in the 0.05-6 pL of O2/L per year range for the waters below 1 km in the Peru Gurrent and Gosta Rica Dome region. From the sea surface to the bottom, the values diminish exponentially... 

Transient computations of methane, ethane, and propane gas-jet diffusion flames in Ig and Oy have been performed using the numerical code developed by Katta [30,46], with a detailed reaction mechanism [47,48] (33 species and 112 elementary steps) for these fuels and a simple radiation heat-loss model [49], for the high fuel-flow condition. The results for methane and ethane can be obtained from earlier studies [44,45]. For propane. Figure 8.1.5 shows the calculated flame structure in Ig and Og. The variables on the right half include, velocity vectors (v), isotherms (T), total heat-release rate ( j), and the local equivalence ratio (( locai) while on the left half the total molar flux vectors of atomic hydrogen (M ), oxygen mole fraction oxygen consumption rate... 

Ethylene and carbon dioxide are produced by the plant cells in the culture and their respective headspace concentrations increase in the stoppered flasks. As expected, oxygen consumption by the cells results in reduction of the head-space composition. Specific 02 consumption rate and biomass accumulation curves as a function of time are presented in Fig. 2. The biomass accumulated at a rate of approximately 0.05 gdw 1 1 h the average specific 02 consumption rate calculated as 0.05 mmol gih v h The same data plotted as specific 02 con-... 

In working with bacteria or zones in the ocean where bacteria dominate the biological community, a different coefficient should be used. In situations where the bacteria are growing and the ETS method of Packard et al. (55) is used to determine the oxygen consumption, a coefficient of 5.0 should be used. This value is based on 49 experiments with five species of marine bacteria (76). In situations where the bacteria are not growing, as in senescence, a coefficient of 0.43 should be used (Table II) (76). Calculations of deep-sea oxygen-consumption rates (68, 76) were made with the assumption that the deep water populations were dominated by bacteria in a senescent phase therefore, the coefficient of 0.43 was used. 

Figure 11. Depth profiles of oxygen consumption. The profile defined by the solid circles (m) was calculated from ETS activity measurements (o) as reported previously (55). The profile defined by the open triangles (a) is based on bacteriological studies (84). The family of continuous profile lines between A and B was generated by Suess s (93) model of oxygen-consumption rates.

ASTM E 906 Heat and Visible-Smoke-Release Rate Test (based on Ohio State University Release Rate Apparatus). In this test the specimen is injected into an environmental chamber through which a constant flow of air passes. A radiant-heat source is used to produce the desired heat flux in the specimen, which way be tested horizontally or vertically. Combustion may be initiated by a number of different methods. The changes in temperature and optical density of the gas leaving the chamber are monitored, and from the resultant data the heat-release rate and visible anoke-release rate are calculated. Toxic-gas release and oxygen consumption rates may also be measured. 

The rate of oxygen consumption is calculated from the oxygen balance, including the rate of water formation which is obtained by the hydrogen balance. 

When the electric current was 1.1 mA, i.e., 10.2 pmolThr of oxygen flux, the formation rates of acrylaldehyde, carbon monoxide and carbon dioxide were 0.33, 1.9 and 4.53 (xmol/hr, respectively, and the oxygen consumption rate of 9.02 pmol/hr was calculated by assuming water as another oxidation product. Mass balance calculated between oxygen evolution and consumption of propene oxidation was about 90%. 

The age of the dissolved organic carbon in the deep ocean supports the concept that below a depth of a few hundred meters the rate of microbial consumption of dissolved organic compounds is very slow. Based on the oxygen consumption rate in deep waters, Postma (81) has calculated a minimum age of 500 years for the dissolved organic matter in the deep sea, while Williams and coworkers (82) have recently... 

It is therefore possible to measnre the dissolved oxygen in a wine over time, as well as its oxidation-reduction potential. It is also possible to calculate the normal potential of the system, nsing the preceding equations ( h = 0 + A pH -h log[02]). Finally, the oxygen consumption rate may also be determined. 

According to scene observations and experiments, calculated the oxygen consumption rate of Xiagou coal mine 4th loose coal under the oxygen concentration of 21% to be 1.95 x 10" kg x m" -s" production rate of CH, to be 6.83 x lO kg m 2- s . 

The oxygen consumption rate as a function of time shown in Figure 7.9b is calculated using Eq. (7.64). 

MRS for the measurement of oxygen partial pressure and, the subsequent calculation of islet oxygen consumption rates.The level of Cho in apoptotic rabbit liver has been measured in vivo using H MRS with water as an internal concentration standard. Measurements were made before and after the injection of sodium selenite to induce apoptosis. 

Oxygen consumption rate is expressed as the turnover number per holo P450cam. The product per O2 consumed was calculated based on the oxygen consumed during the reaction. The OMe-mutant as well as the wild-type enzyme formed stoichiometric amount of hydroxylated camphor to that of oxygen consumed during the reaction. 

The second method is by use of the heart rate. The total heart rate is regarded as a sum of several components and, in general, is linearly related to the metabolic heat production for heart rates above 120 beats per minute. Heat stress will, however, also increase the heat rate. The third method is to calculate the metabolic heat production from measures of oxygen consumption, and carbon dioxide production during activity and recovery. 

Metabolic rate, basal (BM) Metabolic energy transformation calculated from measurements of heat production or oxygen consumption in an organism in a rested, awake, fasting, and thermoneutral state, in W nr. ... 

Calculations of heat release rate by the oxygen consumption method as described by Parker (16) for various applications will be used here. Basically, heat release by the wall is heat release rate as measured in the furnace stack using the oxygen consumption method minus the heat release rate from the fuel gas. The comprehensive equation for heat release rate of the materials (Qwan) as given in Parker s paper (16) is... 

Parker, W.J., "Calculations of the Heat Release Rate by Oxygen Consumption for Various Applications." NBSIR 81-2407, February, 1982. 

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