Mechanism of Ni Removal from Si Materials Using Hydrogen Cyanide Aqueous Solutions

2007 ◽  
Vol 154 (1) ◽  
pp. H16 ◽  
Author(s):  
Yueh-Ling Liu ◽  
Masao Takahashi ◽  
Hikaru Kobayashi
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Cyanide

scholarly journals Radiation chemistry of overirradiated aqueous solutions of hydrogen cyanide and ammonium cyanide

1985 ◽  
Vol 21 (4) ◽  
pp. 356-363 ◽  
Author(s):  
Z. D. Draganić ◽  
I. G. Draganić ◽  
J. A. Azamar ◽  
S. I. Vujošević ◽  
M. D. Berber ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Cyanide ◽  
Radiation Chemistry ◽  
Ammonium Cyanide

Radiolysis of aqueous solutions of hydrogen cyanide (pH∼6): Compounds of interest in chemical evolution studies

1983 ◽  
Vol 19 (2) ◽  
pp. 184-191 ◽  
Author(s):  
V. Niketić ◽  
Z. D. Draganić ◽  
S. Nešković ◽  
S. Jovanović ◽  
I. G. Draganić
Keyword(s):  
Aqueous Solutions ◽  
Chemical Evolution ◽  
Hydrogen Cyanide

Mechanism of Copper Removal from SiO[sub 2] Surfaces by Hydrogen Cyanide Aqueous Solutions

2006 ◽  
Vol 153 (5) ◽  
pp. G394 ◽  
Author(s):  
Naozumi Fujiwara ◽  
Yueh-Ling Liu ◽  
Masao Takahashi ◽  
Hikaru Kobayashi
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Cyanide ◽  
Copper Removal

Silicon cleaning and defect passivation effects of hydrogen cyanide aqueous solutions

2006 ◽  
Vol 137 (5) ◽  
pp. 263-267 ◽  
Author(s):  
Masao Takahashi ◽  
Yueh-Ling Liu ◽  
Naozumi Fujiwara ◽  
Hitoo Iwasa ◽  
Hikaru Kobayashi
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Cyanide ◽  
Defect Passivation

scholarly journals On the Dissociation of Hydrogen Cyanide in Aqueous Solutions Containing Different Ionic Media. A Combined Potentiometric and Carbon-13 NMR Study.

1992 ◽  
Vol 46 ◽  
pp. 138-141 ◽  
Author(s):  
István Banyai ◽  
Johan Blixt ◽  
Julius Glaser ◽  
Imre Tóth ◽  
Susan Jagner ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Cyanide ◽  
Nmr Study ◽  
Ionic Media

The Radiation Chemistry of Aqueous Solutions of Hydrogen Cyanide in the Megarad Dose Range

1976 ◽  
Vol 66 (1) ◽  
pp. 42 ◽  
Author(s):  
Z. D. Draganić ◽  
I. G. Draganić ◽  
M. Borovičanin ◽  
Z. D. Draganic ◽  
I. G. Draganic ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Hydrogen Cyanide ◽  
Dose Range ◽  
Radiation Chemistry

Hydrogen Cyanide Polymers from the Impact of Comet P/Shoemaker-Levy 9 on Jupiter

1997 ◽  
Vol 161 ◽  
pp. 179-187
Author(s):  
Clifford N. Matthews ◽  
Rose A. Pesce-Rodriguez ◽  
Shirley A. Liebman
Keyword(s):  
Amino Acids ◽  
Solar System ◽  
Hydrogen Cyanide ◽  
Nitrogen Heterocycles ◽  
Laboratory Studies ◽  
Heterogeneous Solids ◽  
The Many ◽  
Comet Halley ◽  
The Impact ◽  
By Products

AbstractHydrogen cyanide polymers – heterogeneous solids ranging in color from yellow to orange to brown to black – may be among the organic macromolecules most readily formed within the Solar System. The non-volatile black crust of comet Halley, for example, as well as the extensive orangebrown streaks in the atmosphere of Jupiter, might consist largely of such polymers synthesized from HCN formed by photolysis of methane and ammonia, the color observed depending on the concentration of HCN involved. Laboratory studies of these ubiquitous compounds point to the presence of polyamidine structures synthesized directly from hydrogen cyanide. These would be converted by water to polypeptides which can be further hydrolyzed to α-amino acids. Black polymers and multimers with conjugated ladder structures derived from HCN could also be formed and might well be the source of the many nitrogen heterocycles, adenine included, observed after pyrolysis. The dark brown color arising from the impacts of comet P/Shoemaker-Levy 9 on Jupiter might therefore be mainly caused by the presence of HCN polymers, whether originally present, deposited by the impactor or synthesized directly from HCN. Spectroscopic detection of these predicted macromolecules and their hydrolytic and pyrolytic by-products would strengthen significantly the hypothesis that cyanide polymerization is a preferred pathway for prebiotic and extraterrestrial chemistry.

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:

Sign in / Sign up

Export Citation Format

Share Document