'Fight for sinus rhythm, or surrender?'...

‘New conservation’ or surrender to development?

Ecologists have concluded that diversity per se in ecosystems is important to ecosystem function and ecological services. Meta-analyses of several hundred investigations showed that a loss of diversity negatively affected ecosystem function (Balvanera et al., 2006; Cardinale et al., 2006, 2011; Tilman, 2012). Specifically, research showed that loss of species diversity decreased productivity, r...

Digoxin for heart failure in sinus rhythm.

Macklem, P T (1975). The use of a helium-oxygen mixture during maximum expiratory flow to demonstrate obstruction in small airways in smokers. Journal of Clinical Investigation, 55, 1090-1099. Fry, D L, and Hyatt, R E (1960). Pulmonary mechanics. American Journal of Medicine, 29, 672-689. Hogg, J C, Macklem, P T, and Thurlbeck, W M (1968). Site and nature of airway obstruction in chronic obstru...

Artificial Pacemaking and Sinus Rhythm.

The patients reported form part of a larger series of 60 patients with Stokes-Adams disease treated with artificial pacemakers, which is being reported in full elsewhere. The series contained 32 men between the ages of 39 and 81, and 28 women between 27 and 76. There was a bias towards the older age-groups with 53 per cent of the men and 62 per cent of the women being over 65 years. No patients...

Feed or fight

Within the species Astyanax mexicanus, there are several inter-fertile populations of river-dwelling sighted fish and cave-dwelling blind fish which have evolved morphological and behavioral adaptations. We have recently reported a developmental and neurophysiological basis for the loss of aggressive behavior in the blind cavefish morph of Astyanax. Using an appropriate behavioral assay, we hav...

Dissociation with interference, reciprocal rhythm, and coronary sinus rhythm.