Physico-chemical factors influencing ethyleneamine sorption to soil

1993 ◽  
Vol 12 (1) ◽  
pp. 27-35 ◽  
Author(s):  
John W. Davis
Keyword(s):  
Factors Influencing ◽  
Physico Chemical ◽  
Chemical Factors

Different shades of red: The complexity of mineralogical and physico-chemical factors influencing the colour of ceramics

2017 ◽  
Vol 43 (11) ◽  
pp. 8065-8074 ◽  
Author(s):  
Alberto De Bonis ◽  
Giuseppe Cultrone ◽  
Celestino Grifa ◽  
Alessio Langella ◽  
Antonio P. Leone ◽  
...  
Keyword(s):  
Factors Influencing ◽  
Physico Chemical ◽  
Chemical Factors

scholarly journals Physico-Chemical Factors Influencing Cream Rising

1926 ◽  
Vol 9 (2) ◽  
pp. 171-191 ◽  
Author(s):  
L.S. Palmer ◽  
J.C. Hening ◽  
E.O. Anderson
Keyword(s):  
Factors Influencing ◽  
Physico Chemical ◽  
Chemical Factors

Specific Influences in the Polymerization of Dienes. Chemical Factors Influencing the Homogeneity of Synthetic Rubbers during Production

1945 ◽  
Vol 18 (2) ◽  
pp. 213-222
Author(s):  
William S. Penn
Keyword(s):  
Natural Rubber ◽  
Polymerization Process ◽  
Direct Result ◽  
Hydrogen Atoms ◽  
The Troubles ◽  
Synthetic Rubber ◽  
Factors Influencing ◽  
Fresh Material ◽  
Physico Chemical ◽  
Chemical Factors

Abstract At the present time, when so much synthetic rubber is being produced, the question of the polymerization of dienes is most important. Many thousands of tons of GR-S and related rubbers are being made by this means, and yet the process is only very imperfectly understood. Polymerization is still an uncontrolled reaction, although much work has been done in an attempt to overcome the deficiencies. The troubles are caused by the fact that the dienes do not polymerize in a regular way, because of the formation of branch chains and cross-linkages, which are a direct result of these branch chains. These irregularities must be controlled before satisfactory products can be obtained, and the present paper is written to correlate isolated evidence and present fresh material so that the processes involved during polymerization may be more perfectly understood and possibly controlled. It is natural in the first instance to examine natural rubber to see if any indication of the lines to follow can be obtained. Unfortunately, however, even natural rubber is not perfect, and from various sources of evidence it has been shown that branching does occur in the isoprene chains. This branching is, however, different from that in synthetics, and is quite regular. As will be seen shortly, it is difficult on chemical or physico-chemical grounds to see why this should be so, as the only directive group in the isoprene unit is the methyl side-group. It seems logical to conclude that natural rubber is not formed by a polymerization process, but that carbon and hydrogen atoms combine in such a way that they form directly a natural rubber-molecule.

Physico-chemical factors influencing spore germination in cyanobacterium Fischerella muscicola

2018 ◽  
Vol 58 (8) ◽  
pp. 679-685
Author(s):  
Biranchi N. Mishra ◽  
Manish S. Kaushik ◽  
Gerard Abraham ◽  
Pawan K. Singh
Keyword(s):  
Spore Germination ◽  
Factors Influencing ◽  
Physico Chemical ◽  
Chemical Factors
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