Results 171 to 180 of about 3,162 (208)
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Alteration of Enzymatic DNA Methylation by Chemical Carcinogens
1983It is generally accepted that the DNA methylation pattern in a particular cell type is stable over the cell generations and is clonally inherited by a semiconservative mechanism in which the methylation of the progeny strand is determined by the 5-methylcytosine residue present in the parental strand.
T L, Boehm, D, Drahovsky
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Chemical changes during the alteration of micas
Clay Minerals, 1966AbstractDi- and trioctahedral micas were altered to vermiculite-like minerals by extracting the K with sodium tetraphenylboron. Chemical analysis of original and altered micas shows that loss of K is accompanied by an increased loss on ignition, oxidation of some Fe2+ to Fe3+, loss of divalent octahedral cations, mainly Mg2+, loss of OH− (or sorption ...
A. C. D. Newman, G. Brown
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Chemical analysis of DNA alterations
Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1968Hans-Jürgen Rhaese, Ernst Freese
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Remagnetization and chemical alteration of sedimentary rocks
Geological Society, London, Special Publications, 2012Abstract Chemical remagnetization is a very common phenomenon in sedimentary rocks and developing a greater understanding of the mechanisms has several benefits. Acquisition of a secondary magnetization is usually tangible evidence of a diagenetic event that can be dated by isolation of the chemical remanent magnetization and comparison of ...
R. D. Elmore, A. R. Muxworthy, M. Aldana
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Chemical alteration of the oceanic crust
Geologische Rundschau, 1989The alteration of the upper oceanic crust through sea water-basement rock interaction produces different and distinct alteration zones with increasing depth. The zonation generally shows a consistent worldwide pattern.
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Chemical Alteration and Colour Changes in the Amsterdam Sunflowers
2019This chapter provides a description of colour changes in the Amsterdam Sunflowers due to chemical alteration of pigments, with a focus on geranium lakes and chrome yellows. The brilliant and forceful colours of these and other late nineteenth-century synthetic materials offered artists such as Vincent van Gogh new means of artistic expression that ...
Letizia Monico +11 more
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Chemical Alteration Of Lithium-aluminosilicate Ceramics.
1978PhD ; Materials science ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/178397/2/7822960 ...
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