Range dependency

The accuracy of these methods is tested by finding the mean absolute error between the computed and experimental free energies of solvation. The SM4 method does well for neutral molecules in alkane solvents with a mean absolute error of 0.3 kcal/mol. For neutral molecules, the SM5 methods do very well with mean absolute errors in the 0.3 to 0.6 kcal/mol range, depending on the method and solvent. For ions, the SMI method seems to be most accurate with... 

Nitrobenzyl alcohol n-Octyl-3-nitrophenyl ether Wide mass range depending on the glycol used. 

The reaction is generally carried out at atmospheric pressure and at 350—400°C. A variety of catalysts, eg, bases and metal salts and oxides on siUca or alumina—sihcates, have been patented (86—91). Conversions are in the 30—70% range and selectivities in the 60—90% range, depending on the catalyst and the ratio of formaldehyde to acetate. 

As in the case of biphenyl, current worldwide production figures for terphenyls are not readily obtainable, but the volume is probably around 6.8—8.2 million kg/yr. Currently, most of the terphenyl produced is converted to a partially hydrogenated form. U.S. production of terphenyls has remained steady at several thousand metric tons per year over the past decade. The 1991 small lot price for mixed terphenyls was about 3.89/kg whereas the specially fractionated heat-transfer-grade terphenyl—quaterphenyl mixture sold as Therminol 75 heat-transfer fluid was priced around 6.93/kg. Partially hydrogenated mixed terphenyls were priced in the 6.05—7.48/kg range depending on quantity and grade. 

One 25-hp motor drives both the shell (mixing pan) and the internal device (mixing star), f Batch-capacity range depends on nature of materials to be mixed. 

Different microstructural regions in a material which has an almost uniform composition can also lead to the formation of corrosion cells (e.g., in the vicinity of welds). Basically, corrosion cells can be successfully overcome by cathodic protection. However, in practice, care has to be taken to avoid electrical shielding by large current-consuming cathode surfaces by keeping the area as small as possible. In general, with mixed installations of different metals, it must be remembered that the protection potentials and the protection range depend on the materials (Section 2.4). This can restrict the use of cathodic protection or make special potential control necessary. 

CommercialInimment coscThese are typical costs large ranges depending on sophistication and accessories ... 

Average temperature drop through tower in 10-18 C range depends on wet bulb temperature... 

Its unit is hertz (s ), corresponding one cycle per second. Pure tone consists of one frequency, but normally all sounds are a mixture of many frequencies. In the audio range, frequency varies normally from 20 Hz to 16000 Hz. The size of the audio range depends on the sensitivity of the listener s ears. When the frequency is below 20 Hz, it is called infrasound, while for frequencies over 16000 Hz, it is called ultrasound. 

There are various estimates of the value of life, ranging at the high end from about 2 million per life to about 200,000 per life. The choice of value in tliis range depends a great deal on how one subscribes to tlie various etliical bases... 

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