Niebuhr saw that several paragraphs had been lost from the beginning of the Caesar; Ziegler suggested that the lacuna extended to the end of the Alexander. Both hypotheses are confirmed, if the identification of two new fragments is admitted.At 10. 11 p. 368, Zonaras is epitomizing the text of Caes.; he recounts the Story of Caes. 60. 3, and continues: Editors leave the provenance of the passage unspecified: ‘addita sunt pauca de nomine Caesaris‘. The correction of the vulgar error might (...) perhaps be an inference of Zonaras himself—though such an original contribution to historical polemic would be unique; but the erroneous version, at least, must come from somewhere. It is not found in any of Zonaras' sources for this period, nor in any surviving book which he certainly knew. Nor is it likely to be an addition from his own general knowledge. (shrink)

The preparation of layers of amorphous Se by plasma-enhanced CVD using the hydride H2Se as precursor gas is described. Information concerning the structure of the films was obtained from Raman spectroscopy. The spectra of amorphous Se indicated that the dominant molecular structure is the eight-membered ring and/or a chain with Se8 molecular fragments. This material exhibited reversible photodarkening when illuminated at 77 K. In order to explain this phenomenon, we propose a mechanism which takes into account the role of the (...) lone-pair electron orbitals of Se in their contribution to structural ordering. Illumination can cause a distortion in the normal bonding direction between nearest-neighbour Se atoms and induce in this way intrinsic defect states located at the band edges. In the photo-darkened state, optical transition will occur between these defect states. (shrink)

Daniel Dennett and others have suggested that qualia and introspectible phenomena do not exist. Dennett's account of consciousness, along with several related approaches, has been called illusionism by Keith Frankish. Frankish's analysis is helpful and provocative. As currently presented, however, his 'strong' version of illusionism suffers from several basic confusions, particularly regarding its relationship to eliminative materialism. This paper contrasts strong illusionism with an alternative that is easier to understand and more sharply focused -- fallibilist experiential realism, or, less technically, (...) modest realism. Fallibilist realism affirms the existence of experiential states that are commonly considered qualitative and phenomenal, but shares Frankish's agenda of thoroughly re-evaluating our judgments about such experiences. To illustrate the advantages of modest realism, I compare the ways illusionism and modest realism address two challenging puzzles: explaining how qualitative differences among sensory experiences could be constituted by differences among neural states, and explaining how neural states could constitute any conscious experiences whatsoever. (shrink)

Restitere primo obstinatis animis; deinde ut obtinentes locum †uires ferebant† audent ultro gradum inferre.

Mutagenesis makes it possible to examine the effect of amino acid replacements on the folding and stability of proteins. The evaluation of kinetic and equilibrium folding data using reaction coordinate diagrams allows one to determine the roles that single amino acids play in the folding mechanism.