Reactivity of Chromium Oxide in Aqueous Solutions. 2. Acid Dissolution

Langmuir ◽  
1995 ◽  
Vol 11 (6) ◽  
pp. 2277-2284 ◽  
Author(s):  
Garciela B. Reartes ◽  
Pedro J. Morando ◽  
Miguel A. Blesa ◽  
Patrick B. Hewlett ◽  
Egon Matijevic
Keyword(s):  
Aqueous Solutions ◽  
Chromium Oxide ◽  
Acid Dissolution

Mass transfer into the liquid in turbulent flow at high Schmidt numbers. Dissolution of benzoic acid into aqueous solutions of glycerol from internal surface of the pipe

1981 ◽  
Vol 46 (7) ◽  
pp. 1566-1576
Author(s):  
František Vašák ◽  
Václav Kolář ◽  
Zdeněk Brož
Keyword(s):  
Mass Transfer ◽  
Benzoic Acid ◽  
Aqueous Solutions ◽  
Cross Section ◽  
Circular Cross Section ◽  
Internal Surface ◽  
Theoretical Relation ◽  
Acid Dissolution ◽  
Schmidt Numbers ◽  
Unified Description

Theoretical relation derived in the last study for calculation of the mass transfer coefficient in the region of not fully developed concentration profile at high Schmidt numbers has been verified experimentally. This experimental study has been devoted to measurements of the rate of benzoic acid dissolution into aqueous solutions of glycerol from the internal surface of the pipe of circular cross section in the range 933 ⪬ Sc ⪬ 225 000 and 5 000 ⪬ Re ⪬ 50 000. It has been possible to explain on basis of the theoretical model, the differences between the data of various authors and to obtain a unified description of the phenomena.

Reactivity of chromium oxide in aqueous solutions. 1. Oxidative dissolution

1991 ◽  
Vol 3 (6) ◽  
pp. 1101-1106 ◽  
Author(s):  
Graciela B. Reartes ◽  
Pedro J. Morando ◽  
Miguel A. Blesa ◽  
Patrick B. Hewlett ◽  
Egon Matijevic
Keyword(s):  
Aqueous Solutions ◽  
Chromium Oxide ◽  
Oxidative Dissolution

Ultrathin frozen sections of yeast without aldehyde prefixation

1978 ◽  
Vol 36 (2) ◽  
pp. 58-59
Author(s):  
K. J. Böhm ◽  
a. E. Unger
Keyword(s):  
Aqueous Solutions ◽  
Biological Material ◽  
Yeast Cells ◽  
Frozen Sections ◽  
Good Preservation ◽  
Ultrathin Frozen Sections

During the last years it was shown that also by means of cryo-ultra-microtomy a good preservation of substructural details of biological material was possible. However the specimen generally was prefixed in these cases with aldehydes.Preparing ultrathin frozen sections of chemically non-prefixed material commonly was linked up to considerable technical and manual expense and the results were not always satisfying. Furthermore, it seems to be impossible to carry out cytochemical investigations by means of treating sections of unfixed biological material with aqueous solutions.We therefore tried to overcome these difficulties by preparing yeast cells (S. cerevisiae) in the following manner:

Imaging polymers, proteins and dna in aqueous solutions with the atomic force microscope

1989 ◽  
Vol 47 ◽  
pp. 32-33
Author(s):  
S.A.C. Gould ◽  
B. Drake ◽  
C.B. Prater ◽  
A.L. Weisenhorn ◽  
S.M. Lindsay ◽  
...  
Keyword(s):  
Amino Acids ◽  
Dna Sequencing ◽  
Aqueous Solutions ◽  
Atomic Force Microscope ◽  
Piezoelectric Crystal ◽  
Atomic Force ◽  
Structure Of Molecules ◽  
Optical Lever

The atomic force microscope (AFM) is an instrument that can be used to image many samples of interest in biology and medicine. Images of polymerized amino acids, polyalanine and polyphenylalanine demonstrate the potential of the AFM for revealing the structure of molecules. Images of the protein fibrinogen which agree with TEM images demonstrate that the AFM can provide topographical data on larger molecules. Finally, images of DNA suggest the AFM may soon provide an easier and faster technique for DNA sequencing.The AFM consists of a microfabricated SiO2 triangular shaped cantilever with a diamond tip affixed at the elbow to act as a probe. The sample is mounted on a electronically driven piezoelectric crystal. It is then placed in contact with the tip and scanned. The topography of the surface causes minute deflections in the 100 μm long cantilever which are detected using an optical lever.

The spalling of chromium oxide on an FeCr alloy

1966 ◽  
Vol 6 (11-12) ◽  
pp. 549-550 ◽  
Author(s):  
V HOWES
Keyword(s):  
Chromium Oxide ◽  
Fecr Alloy

Wetting and dewetting of Si/SiO2-wafers by free and lipidmonolayer covered aqueous solutions under controlled humidity

1994 ◽  
Vol 4 (3) ◽  
pp. 455-479 ◽  
Author(s):  
G. Elender ◽  
E. Sackmann
Keyword(s):  
Aqueous Solutions

SMALL AMPLITUDE COLLECTIVE PROTON MOTIONS IN WATER NETWORKS - APPLICATION TO ICES, CLATHRATES AND AQUEOUS SOLUTIONS

1987 ◽  
Vol 48 (C1) ◽  
pp. C1-53-C1-58
Author(s):  
J. L. GREEN ◽  
A. R. LACEY ◽  
M. G. SCEATS
Keyword(s):  
Aqueous Solutions ◽  
Small Amplitude ◽  
Water Networks

Separation of aluminium from beryllium in aqueous solutions by precipitate flotation

1966 ◽  
Vol 16 (4) ◽  
pp. 129-132
Author(s):  
J. A. Lusher ◽  
F. Sebba
Keyword(s):  
Aqueous Solutions
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