The reaction of zinc sulphide with ionic copper—the biological implications. Part 1. Surface area studies of zinc sulphide and its reaction with copper complexes and copper containing proteins

1988 ◽  
Vol 152 (4) ◽  
pp. 265-270
Author(s):  
John Healy ◽  
Ian W. Nowell ◽  
Colin F. Mills ◽  
James R. Lusty
Keyword(s):  
Surface Area ◽  
Copper Complexes ◽  
Zinc Sulphide ◽  
Area Studies ◽  
Ionic Copper

Thermal, Raman and surface area studies of microcoiled carbon fiber synthesized by CVD microwave system

2002 ◽  
Vol 76 (3) ◽  
pp. 217-223 ◽  
Author(s):  
Jining Xie ◽  
Pramod K Sharma ◽  
V.V Varadan ◽  
V.K Varadan ◽  
Bhabendra K Pradhan ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Surface Area ◽  
Area Studies ◽  
Microwave System

The reaction between copper complexes and zinc sulphide in aqueous solution

1987 ◽  
Vol 130 (1) ◽  
pp. 11-12 ◽  
Author(s):  
John Healy ◽  
James R. Lusty ◽  
Colin F. Mills
Keyword(s):  
Aqueous Solution ◽  
Copper Complexes ◽  
Zinc Sulphide

The Thermal Decomposition of Silver(II) Oxide

1961 ◽  
Vol 14 (1) ◽  
pp. 20 ◽  
Author(s):  
JA Allen
Keyword(s):  
Activation Energy ◽  
Thermal Decomposition ◽  
Surface Area ◽  
Vibration Frequency ◽  
Reaction Interface ◽  
Wigner Equation ◽  
Subsequent Reaction ◽  
Area Studies ◽  
X Ray ◽  
Value Changes

The thermal decomposition of silver(II) oxide in a vacuum has been studied over the range 83-134 OC. The rates are quantitatively accounted for by the Polanyi-Wigner equation, the values of the vibration frequency at all stages being within a power of 10 of the expected theoretical value. Changes in the rate at different stages of the reaction are interpreted in terms of diffuseness of the reaction interface. This conclusion is supported by X-ray and surface area studies. The activation energy is 30 kcal. The activation energy associated with the removal of oxygen from the first layer has been shown to be the same as that for the subsequent reaction.

Surface Area Studies of Carbon–Carbon Dioxide Reaction

1953 ◽  
Vol 45 (8) ◽  
pp. 1703-1710 ◽  
Author(s):  
P. L. Walker ◽  
R. J. Foresti ◽  
C. C. Wright
Keyword(s):  
Carbon Dioxide ◽  
Surface Area ◽  
Area Studies ◽  
Carbon Dioxide Reaction

Phase and surface area studies of maghemite nanoparticles dispersed in silica gel

2014 ◽  
Vol 18 (sup6) ◽  
pp. S6-32-S6-35 ◽  
Author(s):  
B. C. Ang ◽  
I. I. Yaacob ◽  
Y. H. Wong
Keyword(s):  
Surface Area ◽  
Silica Gel ◽  
Maghemite Nanoparticles ◽  
Area Studies

Measurement of Complexing Materials Excreted from Algae and Their Ability to Ameliorate Copper Toxicity

1979 ◽  
Vol 36 (8) ◽  
pp. 901-905 ◽  
Author(s):  
C. M. G. Van den Berg ◽  
P. T. S. Wong ◽  
Y. K. Chau
Keyword(s):  
Stability Constants ◽  
Copper Complexes ◽  
Copper Toxicity ◽  
Copper Ion ◽  
Ion Concentration ◽  
Conditional Stability ◽  
Exchange Method ◽  
Ionic Copper ◽  
Conditional Stability Constants ◽  
Algal Exudates

The complexing capacities of three algal exudates and the conditional stability constants of their copper complexes have been determined by an ion exchange method. Their ability to ameliorate copper toxicity towards the primary production of Chlorella vulgaris is related to the conditional stability constants, which regulate the ionic copper concentration. Anabaena cylindrica, Navicula pelliculosa, and Scenedesmus quadricauda excreted 6.73, 2.86, and 0.66 μmol/L of complexing ligands, respectively, with conditional stability constants of 107.7, 108.1, and 108.6, respectively, for their corresponding copper complexes. When these constants were applied in calculations, a free copper ion concentration of 10−10.3 mol/L was found in each exudate. Key words: algal exudates, free copper ion concentration, complexing capacity, copper ion toxicity, primary productivity

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