Numerical solution of the problem of diffusion of a low-molecular weight substance in a polymer material with a moving phase boundary

1999 ◽  
Vol 72 (3) ◽  
pp. 477-481
Author(s):  
G. A. Aminova ◽  
G. V. Manuiko ◽  
G. S. D’yakonov ◽  
V. F. Sopin
Keyword(s):  
Molecular Weight ◽  
Numerical Solution ◽  
Phase Boundary ◽  
Polymer Material ◽  
Low Molecular Weight ◽  
Weight Substance

A LOW MOLECULAR WEIGHT SUBSTANCE OBTAINED FROM SERUM WHICH HAS LUTEINIZING HORMONE LIKE ACTIVITY (“MINI LH”)

1976 ◽  
Vol 43 (6) ◽  
pp. 1410-1413 ◽  
Author(s):  
F.A. Leidenberger ◽  
D. Graesslin ◽  
H.J. Scheel ◽  
N. Hess ◽  
V. Lichtenberg ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Luteinizing Hormone ◽  
Low Molecular Weight ◽  
Weight Substance

scholarly journals Polyethylene glycol as marker in piglet diets with a high dry-matter content

1968 ◽  
Vol 22 (3) ◽  
pp. 515-526 ◽  
Author(s):  
M. J. Manners ◽  
D. E. Kidder
Keyword(s):  
Molecular Weight ◽  
Small Intestine ◽  
Polyethylene Glycol ◽  
Dry Matter ◽  
Matter Content ◽  
Low Molecular Weight ◽  
Dry Matter Content ◽  
Casein Diet ◽  
High Dry Matter ◽  
Weight Substance

1. Polyethylene glycol (PEG) of high molecular weight, used as a dietary marker, did not distribute uniformly in the water present in a high-casein diet as did glucose, a low-molecular-weight substance.2. This distribution effect also occurred with the contents of the stomach and, to a smaller extent, with the contents of the first quarter of the small intestine of piglets given such a diet.

scholarly journals Isolation and characterization of a low-molecular-weight substance activating head and bud formation in hydra

Development ◽  
1973 ◽  
Vol 29 (1) ◽  
pp. 27-38
Author(s):  
H. Chica Schaller
Keyword(s):  
Molecular Weight ◽  
Low Molecular Weight ◽  
Bud Formation ◽  
Isolation And Characterization ◽  
Crude Extracts ◽  
Head Formation ◽  
Weight Substance

From crude extracts of hydra, a substance activating head formation was isolated and enriched at least 100000-fold. The molecular weight was determined to be approximately 900. Sensitivity against proteases suggests that it is a peptide. The substance acts at a concentration equivalent to the extract of 1 hydra per ml or at a concentration of less than 10 10M. In its highly purified form the substance activates head and bud formation.

An inhibitor of cell cohesion from axenically grown cells of the slime mould, Dictyostelium discoideum

1977 ◽  
Vol 28 (1) ◽  
pp. 107-116
Author(s):  
A.P. Swan ◽  
D.R. Garrod ◽  
D. Morris
Keyword(s):  
Molecular Weight ◽  
Biological Effects ◽  
Low Molecular Weight ◽  
Stationary Phase Culture ◽  
Present Evidence ◽  
Slime Mould ◽  
Heat Stable ◽  
Phase Culture ◽  
Weight Substance ◽  
Millipore Filters

Medium from a stationary phase culture of axenically grown D. discoideum cells contains an inhibitor of cohesion of log phase cells. The inhibitor is a heat-stable, low molecular weight substance. Its biological effects include inhibition of cohesion of aggregation-competent cells, of cells of other slime mould species, the blocking of development on Millipore filters and a reduction in adhesiveness of slime mould cells to glass. Present evidence suggests that the inhibitor may bind to the cell surface.

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