The fertility of a soil classically refers to an aptitude to produce plant biomass, under a given set of climatic and topographic conditions; it therefore contributes to an ecosystemic supply service (MEA, 2005). It is generally subdivided into three components – chemical, physical and biological – which are closely linked (Genot et al., 2009). The chemical component describes the ability of th...

This work introduces new relative perturbation bounds for the LDU factorization of (row) diagonally dominant matrices under structure-preserving componentwise perturbations. These bounds establish that if (row) diagonally dominant matrices are parameterized via their diagonally dominant parts and off-diagonal entries, then tiny relative componentwise perturbations of these parameters produce ti...

Brink, MS, Nederhof, E, Visscher, C, Schmikli, SL, and Lemmink, KAPM. Monitoring load, recovery, and performance in young elite soccer players. J Strength Cond Res 24(3): 597– 603, 2010—The purpose of this study was to investigate the relation between training load, recovery, and monthly field test performance in young elite soccer players to develop training guidelines to enhance performance. ...

there has been extensive work on the existence of periodic solutions for nonlinear second order autonomous differantial equations, but little work regarding the third order problems. the popular poincare-bendixon theorem applies well to the former but not the latter (see [2] and [3]). we give a necessary condition for the existence of periodic solutions for the third order autonomous systems, t...

landfill is one of the primary methods for urban solid waste disposal. in order to reduce theenvironmental adverse effects and to protect the public health and human welfare, evaluating the landfill isutmost importance. in this research work evaluation procedure for the current condition of ahvaz city urbansolid waste landfill site with criteria of local screening method (lsm) is outlined. in t...

This article examines the internal and external pressures to ‘normalize’ identity in relation individuals experiencing mental health conditions (MHCs) at work. The data takes form of three vignettes extracted from a larger empirical study 60 interviews. These explore tensions surrounding for MHCs as well their interventions suppress exhibiting condition. analysis captures number competing meani...