THE SPECIFIC HEATS AND LATENT HEATS OF FUSION OF ICE AND OF SEVERAL ORGANIC COMPOUNDS

1925 ◽  
Vol 47 (1) ◽  
pp. [1]-9 ◽  
Author(s):  
O. Maass ◽  
L. J. Waldbauer
Keyword(s):  
Organic Compounds ◽  
Specific Heats ◽  
Latent Heats

Latent Heats of Vaporization of Some Organic Compounds

1951 ◽  
Vol 43 (12) ◽  
pp. 2924-2925 ◽  
Author(s):  
J. B. O'Hara ◽  
R. W. Fahien
Keyword(s):  
Organic Compounds ◽  
Latent Heats ◽  
Heats Of Vaporization

Latent heats of vaporisation of some organic compounds

Vacuum ◽  
1952 ◽  
Vol 2 (1) ◽  
pp. 71
Author(s):  
J.B. O'Hara ◽  
R.W. Fehien
Keyword(s):  
Organic Compounds ◽  
Latent Heats

The Transfer Number of Hydrocarbon Liquids

1992 ◽  
Vol 114 (2) ◽  
pp. 346-352
Author(s):  
J. Odgers ◽  
D. Kretschmer
Keyword(s):  
Operating Conditions ◽  
Liquid Fuels ◽  
Transfer Number ◽  
Critical Temperatures ◽  
Combustion Behavior ◽  
Specific Heats ◽  
Wide Range ◽  
Prediction Techniques ◽  
Latent Heats ◽  
And Diffusion

The transfer number (B) assumes considerable importance in the evaporation and diffusion of fuels prior to their combustion. Quite often the transfer number is assumed to be a constant for a given fuel. These notes examine the feasibility of this assumption. New correlations have been derived for the specific heats of the liquid fuels and their latent heats, over a wide range of temperatures and pressures, as also the effects of pressure upon the boiling characteristics. New prediction techniques are also proposed for critical temperatures and pressures. Taking note of the above correlations, it becomes possible to assess the values of B for a wide range of combustor operating conditions for any given fuel. The significance of these variations upon the probable combustion behavior of the fuels is then commented upon. The results show that the assumption of a constant value for B could lead to a significant misinterpretation of combustion behavior due to operating conditions and/or the use of different fuels.

Virial Coefficients of Three Organic Sulphides

1962 ◽  
Vol 15 (2) ◽  
pp. 190 ◽  
Author(s):  
GA Bottomley ◽  
IH Coopes
Keyword(s):  
Room Temperature ◽  
Virial Coefficients ◽  
Thermodynamic Method ◽  
Dimethyl Sulphide ◽  
Methyl Ethyl ◽  
Second Virial Coefficients ◽  
Specific Heats ◽  
Two Temperatures ◽  
Latent Heats

The second virial coefficients at two temperatures somewhat above room temperature have been determined for the three substances dimethyl sulphide, diethyl sulphide, and methyl ethyl sulphide by e precision differential compressibility method, and the numerical values compared with determinations by the indirect thermodynamic method using vapour specific heats and latent heats of evaporation.

The Transfer Number of Hydrocarbon Liquids

1991 ◽  
Author(s):  
J. Odgers ◽  
D. Kretschmer
Keyword(s):  
Operating Conditions ◽  
Liquid Fuels ◽  
Considerable Importance ◽  
Transfer Number ◽  
Critical Temperatures ◽  
Specific Heats ◽  
Wide Range ◽  
Prediction Techniques ◽  
Latent Heats ◽  
And Diffusion

The Transfer Number (B) assumes considerable importance in the evaporation and diffusion of fuels prior to their combustion. Quite often the Transfer Number is assumed to be a constant for a given fuel. These notes examine the feasibility of this assumption New correlations have been derived for the specific heats of the liquid fuels and their latent heats, over a wide range of temperatures and pressures, as also the effects of pressure upon the boiling characteristics. New prediction techniques are also proposed for critical temperatures and pressures. Taking note of the above correlations, it becomes possible to assess the values of B for a wide range of combustor operating conditions for any given fuel. The significance of these variations upon the probable combustion behaviour of the fuels is then commented upon. The results show that the assumption of a constant value for B could lead to a significant mis-interpretation of combustion behaviour due to operating conditions and/or the use of different fuels.

The Tempo and mode(S) of Prebiotic Evolution

1997 ◽  
Vol 161 ◽  
pp. 419-429 ◽  
Author(s):  
Antonio Lazcano
Keyword(s):  
Origin Of Life ◽  
Organic Compounds ◽  
Biological Evolution ◽  
Current Evidence ◽  
Early Diversification ◽  
Time Period ◽  
The Galaxy ◽  
History Of ◽  
Widespread Phenomenon ◽  
The Origin Of Life

AbstractDifferent current ideas on the origin of life are critically examined. Comparison of the now fashionable FeS/H2S pyrite-based autotrophic theory of the origin of life with the heterotrophic viewpoint suggest that the later is still the most fertile explanation for the emergence of life. However, the theory of chemical evolution and heterotrophic origins of life requires major updating, which should include the abandonment of the idea that the appearance of life was a slow process involving billions of years. Stability of organic compounds and the genetics of bacteria suggest that the origin and early diversification of life took place in a time period of the order of 10 million years. Current evidence suggest that the abiotic synthesis of organic compounds may be a widespread phenomenon in the Galaxy and may have a deterministic nature. However, the history of the biosphere does not exhibits any obvious trend towards greater complexity or «higher» forms of life. Therefore, the role of contingency in biological evolution should not be understimated in the discussions of the possibilities of life in the Universe.

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