This essay looks at the historical significance of five APS classic papers that are freely available online: Murdaugh HV Jr, Schmidt-Nielsen B, Doyle EM, and O’Dell R. Renal tubular regulation of urea excretion in man. J Appl Physiol 13: 263–268, 1958. (http://jap.physiology.org/cgi/reprint/13/2/263) Schmidt-Nielsen B. Renal tubular excretion of urea in kangaroo rats. Am J Physiol 170: 45–56, 1...

This essay looks at the historical significance of five APS classic papers that are freely available online: Murdaugh HV Jr, Schmidt-Nielsen B, Doyle EM, and O’Dell R. Renal tubular regulation of urea excretion in man. J Appl Physiol 13: 263–268, 1958. (http://jap.physiology.org/cgi/reprint/13/2/263) Schmidt-Nielsen B. Renal tubular excretion of urea in kangaroo rats. Am J Physiol 170: 45–56, 1...

Let Σ be a closed, orientable surface of genus g. It is known that the SU(2, 1) representation variety of π1(Σ) has 2g− 3 components of (real) dimension 16g− 16 and two components of dimension 8g−6. Of special interest are the totally loxodromic, faithful (that is quasi-Fuchsian) representations. In this paper we give global real analytic coordinates on a subset of the representation variety th...

We give an algorithm to compute the coincidence Nielsen number N(f, g), introduced in [DJ], for pairs of maps into real projective spaces. 1. Preliminaries. Let f, g :M → N be a pair of maps between closed C-smooth connected manifolds of the same dimension. We investigate the coincidence set Φ(f, g) = {x ∈ M : fx = gx} of such a pair. The Nielsen relation (x, y ∈ Φ(f, g) are Nielsen equivalent ...

Amyloid-like adhesins in floc-forming and filamentous bacteria in activated sludge 1 2 Poul Larsen, Jeppe Lund Nielsen, Daniel Otzen 1 , and Per Halkjær Nielsen 3 4 Department of Biotechnology, Chemistry, and Environmental Engineering, Aalborg 5 University, Sohngaardsholmsvej 57, DK-9000, Aalborg, Denmark 6 7 Running title: Amyloid adhesins in activated sludge. 8 9

The main results concern with the self maps on the Klein bottle. We obtain the Reidemeister numbers and the Nielsen numbers for all self maps on the Klein bottle. In terms of the Nielsen numbers of their iterates, we totally determine the minimal sets of periods for all homotopy classes of self maps on the Klein bottle.

M. Pedersen, A. B. Lødrup, K. Karstoft, E. A. Nielsen, M. K. Hagensen, P. A. Nielsen, A. Stavropoulos, B. Jespersen, S. Ringgaard, and M. Smerup MR Research Center, Aarhus University Hosptial, Aarhus, Denmark, Institute of Clinical Medicine, Aarhus University Hosptial, Aarhus, Denmark, Dept. of Periodontology, Aarhus University, Aarhus, Denmark, Department of Nephrology, Aarhus University Hospi...

The cognitive walkthrough (Lewis et al. 1990; Polson et al. 1992a) is a usability inspection method that focuses on evaluating a design for ease of learning, particularly by exploration. This focus is motivated by the observation that many users prefer to learn software by exploration (Carroll and Rosson 1987; Fischer 199 1). Instead of investing time for comprehensive formal training when a s ...