Correction Following the publication of the original supplement article [1], it was brought to our attention that the supplement title unfortunately contains an error: “Proceedings of the 16th Annual UT-KBRIN Bioinformatics Summit 2016: proceedings” should instead read “Proceedings of the 16th Annual UT-KBRIN Bioinformatics Summit 2017: proceedings”. The correct title has been included in this ...

© 2006 The Author. Journal Compilation © 2006 The Nautical Archaeology Society. Published by Blackwell Publishing Ltd. 9600 Garsington Road, Oxford OX4 2DQ, UK and 350 Main Street, Malden, MA 02148, USA. Blackwell Publishing Ltd F. Castro: RISING and NARROWING: 16TH-CENTURY PORTUGUESE GEOMETRIC ALGORITHMS NAUTICAL ARCHAEOLOGY, 35.2 Rising and Narrowing: 16th-Century Geometric Algorithms used to...

In this paper, we prove the existence of twelve small (local) limit cycles in a planar system with third-degree polynomial functions. The best result so far in literature for a cubic order planar system is eleven limit cycles. The system considered in this paper has a saddle point at the origin and two focus points which are symmetric about the origin. This system was studied by the authors and...

This paper is devoted to analytical and numerical investigation of limit cycles in twodimensional polynomial quadratic systems. The appearance of modern computers permits one to use a numerical simulation of complicated nonlinear dynamical systems and to obtain new information on a structure of their trajectories. However the possibilities of naive approach, based on the construction of traject...

UNLABELLED Sertoli cell (SC) number determines testes size and their capacity to produce spermatozoa. In the rat SC proliferate until 15th postnatal day (PND). Their proliferation is stimulated by FSH and inhibited by estradiol, but the role for androgens is uncertain. In this study we analyzed the effects of testosterone administration on testes growth and SC number in relation to timing of th...