The influence of the geometry factor κ on efficiency energy transfer by FRET (Förster resonance transfer) was studied means dyads benzoperylene and perylene interlinked a spacer cage bicyclo-[2.2.2]octane. electronic transition moments were arranged orthogonally for extinguishing according to Förster's theory. In contrast theory proceeded unrestrictedly attributed molecular vibrations. A furthe...

Many systems migrate towards increasing or decreasing modularity, yet no explicit causal models exist to explain this process. This paper builds upon a general theory of modular systems (Schilling 2000), to explain the migration of systems towards or away from increasingly modular forms. It then applies this model to a specific context: the adoption of modular organizational forms. In many indu...

Recent advances in stochastic demography provide unique insights into the probable effects of increasing environmental variability on population dynamics, and these insights can be substantially different compared with those from deterministic models. Stochastic variation in structured population models influences estimates of population growth rate, persistence and resilience, which ultimately...

ent téléchargé le 24/02/2018 Il est interdit et i Imaging of the heart and the great vessels changed rapidly these last 20 years. Arteriogram which was the technique of reference is now with no interest in our current practice whereas CT angiogram (CTA) and MR angiogram (MRA) appear to play a keyrole with echocardiography. Because of the rapid technical evolution of both technologies (CT and MR...

As organizations globalize their operations, there is a heightened need to identify and select qualified managers for overseas assignments. The increased complexity of these foreign assignments necessitates a recalibration of the traditional selection procedures and processes used in the past. In particular, there is some evidence that expatriation becomes strategic as organizations increasingl...

The epidemiology of Clostridium difficile infection is changing as a result of the epidemic spread of the hypervirulent North American Pulsefield type 1 strain. Clinicians are likely to encounter this disease more frequently than ever in their practice, and should be familiar with the updates in its diagnosis and treatment.

Aeromonas dhakensis was first isolated from children with diarrhea in Dhaka, Bangladesh and described in 2002. In the past decade, increasing evidence indicate this species is widely distributed in the environment and can cause a variety of infections both in human and animals, especially in coastal areas. A. dhakensis is often misidentified as A. hydrophila, A. veronii, or A. caviae by commerc...