Temperature observation

Correeted eompressor diseharge temperature = (Observed temperature) 520/Ti) Correeted eompressor diseharge pressure = (Observed pressure) (14.7/P,) Correeted speed = (Observed speed) J520/Ti Correeted air flow = (Observed flow) (14.7/P,) JT,/520 Correeted horsepower = (Observed power) (14.7/P,) r,/520... 

The end of the reaction is indicated by the pressure and temperature observations. The total reaction time is of the order of 16-18 hours. 

Two crystalline forms have been observed.One is formed by slow cooling from the melt and the other by slow heating of the amorphous polymer. The properties of the commercial products were therefore to some extent dependent on their heat history. Glass transition temperatures observed range from 7 to 32°C and depend on the time scale of the method of measurement. ... 

Generated spontaneously from dimethylamino-malononitrile at room temperature. Observed to be persistent over many hours by EPR. 

The DTA or hot-stage microscope can be used under ignition conditions to obtain an ignition temperature. The nature of the decomposition can also be observed at a range of temperatures. Observations such as decomposition with evolution of gases prior to ignition are regarded as potentially hazardous. 

Phase transitions have been characterized in a number of different pure and mixed lipid systems. Table 9.1 shows a comparison of the transition temperatures observed for several different phosphatidylcholines with different fatty acyl chain compositions. General characteristics of bilayer phase transitions include the following ... 

Temperatur-abfall, m. temperature drop, -an-derung,/. change of temperature, -beobach-tung, /. temperature observation, -bereich,... 

AT across reactor maximum temperature observed (average)... 

There are two steps in the calculation. First, calibrate the calorimeter by calculating its heat capacity from the information on the first reaction, Cca) = qc, /AT. Second, use that value of Cc-1 to find the energy change of the neutralization reaction. For the second step, use the same equation rearranged to gcal = Cca AT, but with AT now the change in temperature observed during the reaction. Note that the calorimeter contains the same volume of liquid in both cases. Because dilute aqueous solutions have approximately the same heat capacities as pure water, assume that the heat capacity is the... 

The advantages associated with the MAP technology as compared to conventional and automatic Soxhlet methods are considerable (Table 3.33). In MAP high sensitivity and selectivity by fractionation are achieved using different extraction media with similar, or better, linearity and reproducibility parameters. One of the principle features of the process is the lower temperatures observed in the microwave-extracted materials in contrast to volumetric heating usually experienced in traditional solvent procedures. These lower temperatures... 

Step 13. Generate the output table of temperature, observed densities, estimated uncertainties, and difference between observed and calculated densities and arrange it in order of year of publication with authors. For data from a particular source, arrange in order of temperature. 

Low-Temperature Observation of Intermediates in Type I Cleavage Reactions... 

Mw = 56,170, PDI = 1.67). The electron-withdrawing nature of the fluorinated aryl substituents appeared to have had an important influence on the reactivity, as the dehydrocoupling process was observed to occur efficiently at the mildest temperatures observed with such polymerizations to date.49... 

The Ti-FI dimethyl complexes 42 and 43 can readily be activated with B(C6F5)3 or [CPh3]+[B(C6F5)4] to form a methyl cationic species. The addition of ethylene to the cationic species derived from 42 allows room temperature observation of the living propagating species, which displays XH NMR peaks centered at 1.45 and 2.88 ppm that are attributed to the diastereotopic a-methylene protons connected... 

It will be seen that, despite the rather considerable range of assumptions used for the various curves, the total dissolved hydrogen in equilibrium with gas at one atmosphere is very small, probably undetectable, at temperatures as low as 500 K. If AE2 is as low as 1.5 eV, the concentration of dissolved H2 always stays well below that of H°, as the n02 factor in (12) decreases faster with decreasing temperature than the factor exp(AE2/ r) increases for AE2 closer to 2.1 eV, H2 becomes strongly dominant at the lower temperatures. A AE2 appreciably larger than 2.1 eV would be hard to reconcile with the high temperature observations. The H° concentrations always decrease extremely rapidly at low temperatures. The possible... 

The magnetic properties of the py and pz compounds are compared in Fig. 15. The 3D derivatives undergo more strongly cooperative spin transitions than the corresponding 2D counterparts as indicated by the increase in width of the hysteresis loop (range 20-40 K). The significantly higher transition temperatures observed for the pz derivatives compared with their py counterparts cannot be explained in terms of the spectrochemical series... 

Endurance burn testing generally implies that the ignited gas mixture and flow rate are adjusted to give the worst-case heating (based on temperature observations on the protected side of the element surface), that the burn continues for a specified duration, and flame penetration does not occur. Continuous flame testing implies a gas... 

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