INTRODUCTION Exercise oxygen pulse (O₂ pulse), a surrogate for stroke volume and arteriovenous oxygen difference, has emerged as an important variable obtained during cardiopulmonary exercise testing. OBJECTIVES We hypothesized that the O₂ pulse curve pattern response to a maximal cycling ramp protocol exhibits a stable linear pattern in subjects reevaluated under the same clinical conditions...

We consider Cournot models of competition, where market participants choose the quantities they demand or supply. We study the loss of aggregate surplus due to the exercise of market power in Cournot competition, for both oligopsony and oligopoly models. We observe that efficiency loss is generally arbitrarily high in Cournot games, but also prove bounds on efficiency loss in several cases of i...

biharmonic surfaces in euclidean space $mathbb{e}^3$ are firstly studied from a differential geometric point of view by bang-yen chen, who showed that the only biharmonic surfaces are minimal ones. a surface $x : m^2rightarrowmathbb{e}^{3}$ is called biharmonic if $delta^2x=0$, where $delta$ is the laplace operator of $m^2$. we study the $l_k$-biharmonic spacelike hypersurfaces in the $4$-dimen...

in this paper we show that if q is a power of a prime p , then the projective special linear group psl(2, q) and the stabilizer of a point of the projective line have maximum sum element orders among all proper subgroups of projective general linear group pgl(2, q) for q odd and even respectively

background: major attention has been drawn to the prognostic value of plasma/serum neutrophil gelatinase-associated lipocalin (ngal) in detection of acute kidney injury (aki) in children, but still no consensus has been reached. accordingly, the present study aimed to assess the diagnostic value of this biomarker in detection of acute kidney injury in children through a systematic review and me...

There exist some problems related to the determination of the quasiplateau region in experimental sciences. The paper describes two approaches to this matter which lead to two algorithms for finding the maximal length quasiplateau interval for discrete data. Numerical tests are presented.

We study in this paper quasiperiodic maximal surfaces pseudo-hyperbolic spaces and show that they are characterised by a curvature condition, Gromov hyperbolicity or conformal hyperbolicity. the limit curves of these Einstein Universe admits canonical quasisymmetric parametrisation, while conversely every curve bounds surface such way parametrisation is continuous extension uniformisation; we g...

For any smooth Hurwitz curve H n : X Y + Z = 0 over the finite field F p , an explicit description of its Weierstrass points for morphism lines is presented. As a consequence, bounds on number rational are obtained via Stöhr-Voloch Theory. Further, full automorphism group Aut ( ) as well genera all Galois subcovers with ≠ 3 r computed. Finally, question by F. Torres plane nonsingular maximal cu...

BACKGROUND The aim of this study was to evaluate the performance of the recently described timed inspiratory effort (TIE) index in comparison with 4 other previously reported indices as to the weaning outcome in patients with neurologic or neuromuscular disorders. METHODS This observational prospective study included subjects undergoing weaning from mechanical ventilation. The performance of ...