Intimate Connection (intimate + connection)

Distribution by Scientific Domains

Selected Abstracts

A multiple-scattering theory of circular and linear dichroism for photoemission and photoabsorption

S. Di Matteo
A unified treatment of circular dichroism, both natural and magnetic, in (spin-resolved) photoemission and photoabsorption from core levels is given, valid in the many-body case and for extended systems, together with an extension of the formalism to treat linear dichroism. The reduction of this scheme to a one-electron picture in the framework of multiple scattering theory is briefly discussed and shows the intimate connection of the two spectroscopies via a generalized optical theorem. Plausibility arguments are given that in correlated d -band systems screening and relaxation effects are not so drastic as in other cases, due to the autoscreening action of the excited photoelectron, so that the final density of states is much like the initial unperturbed one. It is shown how to exploit this point of view to obtain in favorables cases separated orbital and spin moment radial (surface) distribution maps from dichroic magnetic EXAFS spectra (photoelectron diffraction patterns) related to the ground state. Dichroic natural spectra, both in photoemission and absorption, are shown to be sensitive only to atoms in chiral geometry. [source]

The dual role of a loop with low loop contact distance in folding and domain swapping

Apichart Linhananta
Abstract , helices, , strands, and loops are the basic building blocks of protein structure. The folding kinetics of , helices and , strands have been investigated extensively. However, little is known about the formation of loops. Experimental studies show that for some proteins, the formation of a single loop is the rate-determining step for folding, whereas for others, a loop (or turn) can misfold to serve as the hinge loop region for domain-swapped species. Computer simulations of an all-atom model of fragment B of Staphylococcal protein A found that the formation of a single loop initiates the dominant folding pathway. On the other hand, the stability analysis of intermediates suggests that the same loop is a likely candidate to serve as a hinge loop for domain swapping. To interpret the simulation result, we developed a simple structural parameter: the loop contact distance (LCD), or the sequence distance of contacting residues between a loop and the rest of the protein. The parameter is applied to a number of other proteins, including SH3 domains and prion protein. The results suggest that a locally interacting loop (low LCD) can either promote folding or serve as the hinge region for domain swapping. Thus, there is an intimate connection between folding and domain swapping, a possible cause of misfolding and aggregation. [source]

Death, Burial, and the Study of Contemporary Japanese Buddhism

Mark Rowe
This article approaches mortuary practices as a window into the current state of Japanese Buddhism. Despite widespread scholarly awareness of the intimate connection between Buddhism and death throughout much of Japanese history, to date little work has been done to explore the profound significance of changing burial practices on all of the major sects today. Making the argument that ,funerary Buddhism' (s,shiki Bukky,) is important to both think about and think with, this article provides an overview of funerary culture in Japan and reflects upon what contemporary changes to that culture tell us about Japanese Buddhism. [source]

Playing Games with History: Tony Blair's European Policy in the Press

Oliver Daddow
This article examines how Tony Blair on the one hand and the Euro-sceptical press on the other have ransacked history to support their respective arguments about British European policy since 1997. It considers first of all why history plays a key role in British discussions about European affairs; it does so, firstly, because of the discipline's intimate connection with the making of national identities and, secondly, because Europe has long been historicised as the ,other' against which the British identify themselves. The second part of the article considers the rhetorical strategies Blair and the press have used to persuade the public using content analysis of Blair's foreign policy speeches and articles on Europe in the sceptical British press since 1997. I argue that Blair finds himself in a difficult position in part because of his own failure to make the case for Europe forcefully and consistently enough and in part because of the difficulties inherent in altering deeply entrenched Euro-sceptical opinions in Britain's leading press outlets. [source]