Studies in electrode polarisation. Part II. The investigation of the rate of growth of polarisation potentials

1940 ◽  
Vol 35 ◽  
pp. 364 ◽  
Author(s):  
A. Hickling
Keyword(s):  
Electrode Polarisation ◽  
Rate Of Growth

Economic Growth: New Problems and New Risks

2006 ◽  
pp. 20-37 ◽  
Author(s):  
M. Ershov
Keyword(s):  
Economic Growth ◽  
Foreign Exchange ◽  
Driving Force ◽  
Structural Changes ◽  
Rate Of Growth

The economic growth, which is underway in Russia, raises new questions to be addressed. How to improve the quality of growth, increasing the role of new competitive sectors and transforming them into the driving force of growth? How can progressive structural changes be implemented without hampering the rate of growth in general? What are the main external and internal risks, which may undermine positive trends of development? The author looks upon financial, monetary and foreign exchange aspects of the problem and comes up with some suggestions on how to make growth more competitive and sustainable.

Some Factors in Growth Reconsidered by Robert Eisner, (Lecture Series No. 21). Athens: Center of Planning and Economic Research, 1966. pp.63.

1967 ◽  
Vol 7 (4) ◽  
pp. 547-547
Author(s):  
Gunnar Floystad
Keyword(s):  
Economic Growth ◽  
Simple Model ◽  
Labour Force ◽  
Economic Research ◽  
Positive Relation ◽  
Employment Level ◽  
Rate Of Growth ◽  
Lecture Series ◽  
Sustained Rate

Eisner's book contains two lectures which were read at the Center of Planning and Economic Research in Athens. In his first lecture the author raises the question: does a higher level of employment contribute to a more rapid, sustained rate of economic growth? A number of economists, including P.A. Samuelson, A.W. Philips and Harry Johnson, have argued that the positive relation between employment and growth is a transitory phenomenon which occurs only when the employment level changes. By using a simple model of the Harrod-Domar type he shows that the higher the level of employment or, more exactly, the higher the proportion of the labour force employed the greater will be the percentage rate of growth of output.

Formation of Barrier Oxide Film on Lead in Borate Solutions

1994 ◽  
Vol 59 (6) ◽  
pp. 1305-1310 ◽  
Author(s):  
Emad E. Abdel Aal ◽  
Mohamed M. Hefny
Keyword(s):  
Oxide Film ◽  
Current Density ◽  
High Field ◽  
Empirical Relation ◽  
Field Approximation ◽  
Ion Concentration ◽  
Solution Temperature ◽  
Oxide Growth ◽  
Rate Of Growth ◽  
Barrier Type

Galvanostatic anodization of lead in borate solutions reveals that lead can form a barrier type oxide film. The rate of growth, R, fulfils the empirical relation, R = aib within the current density i range from 1.16 .10-4 to 3.19 .10-4 A cm-2. The magnitudes of the parameters a and b are 6.9 . 103 and 1.6, respectively, it has been found that the high field approximation is applicable for the oxide growth on lead. The coefficients of the dependence of R on solution temperature, T, pH and borate ion concentration, c, viz. (∂R/∂T), (∂R/∂pH) and (∂R/∂log c) are -18 . 10-4, -0.13 and 0.41, respectively.

Evolution of the number of communicative civilizations in the Galaxy: implications on Fermi paradox

2020 ◽  
Vol 19 (4) ◽  
pp. 314-319
Author(s):  
Giorgio Spada ◽  
Daniele Melini
Keyword(s):  
Power Law ◽  
Slow Rate ◽  
Rate Of Growth ◽  
Long Run ◽  
Rate Of Increase ◽  
The Galaxy ◽  
Zero Number

AbstractIt has been recently proposed DeVito [(2019) On the meaning of Fermi's paradox. Futures, 389–414] that a minimal number of contacts with alien radio-communicative civilizations could be justified by their logarithmically slow rate of growth in the Galaxy. Here we further develop this approach to the Fermi paradox, with the purpose of expanding the ensemble of the possible styles of growth that are consistent with the hypothesis of a minimal number of contacts. Generalizing the approach in DeVito (2019), we show that a logarithmic style of growth is still found. We also find that a style of growth following a power law would be admissible, however characterized by an exponent less than one, hence describing a sublinear increase in the number of communicative civilizations, still qualitatively in agreement with DeVito (2019). No solutions are found indicating a superlinear increase in the number of communicative civilizations, following for example an exponentially diverging law, which would cause, in the long run, an unsustainable proliferation. Although largely speculative, our findings corroborate the idea that a sublinear rate of increase in the number of communicative civilizations in the Galaxy could constitute a further resolution of Fermi paradox, implying a constant and minimal – but not zero – number of contacts.

scholarly journals THE RELATION OF THE RATE OF GROWTH TO DIET. II

1927 ◽  
Vol 75 (3) ◽  
pp. 779-787
Author(s):  
Lafayette B. Mendel ◽  
Helen C. Cannon
Keyword(s):  
Rate Of Growth

The Effect of Practolol, In Vitro Generated Metabolites of Practolol and Chemical Analogues on the Rate of Growth of Human Skin Fibroblasts

1984 ◽  
Vol 12 (2) ◽  
pp. 89-97
Author(s):  
Graham R. Elliott ◽  
H.E. Amos ◽  
James W. Bridges
Keyword(s):  
Human Skin ◽  
Psoriasis Patient ◽  
Skin Fibroblasts ◽  
Human Skin Fibroblasts ◽  
Cell Type ◽  
Normal Human Skin ◽  
Rate Of Growth ◽  
Structural Analogues ◽  
Normal Human

The rate of growth of normal human skin fibroblasts was inhibited in a dose related, reversible, fashion by practolol (N-4-(2-hydroxy)-3 (1-methyl)-aminopropoxyphenylacetamine) (ID50 1.35 ± 0.14 x 10-3M), propranolol (1-(isopropylamino)-3(1-naphthyl-oxy)-2-propranolol) (ID50 0.145 ± 0.02 x 10-3M) and paracetamol (N-(4-hydroxyphenyl) acetamide) (ID50 0.85 ± 0.2 x 10-3M). Skin fibroblasts isolated from a psoriasis patient were more sensitive towards practolol (ID50 0.48 ± 0.14 x 10-3M) and propranolol (ID50 0.032 ± 0.002 x 10-3M), but less sensitive towards paracetamol (ID50 1.3 ± 0.07 x 10-3M). In vitro generated metabolites of practolol, using normal or Arochlor 1254-pretreated hamster liver preparations, and structural analogues of practolol had no effect upon the growth of either cell type.

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