Trelleborg AB

About: Trelleborg AB is a company organization based out in Trelleborg, Sweden. It is known for research contribution in the topics: Natural rubber & Layer (electronics). The organization has 673 authors who have published 778 publications receiving 10908 citations.

Simple Cystatin C–Based Prediction Equations for Glomerular Filtration Rate Compared with the Modification of Diet in Renal Disease Prediction Equation for Adults and the Schwartz and the Counahan–Barratt Prediction Equations for Children

Abstract: Background: Serum creatinine is the most commonly used marker for estimation of glomerular filtration rate (GFR). To compensate for its drawbacks as a GFR marker, several prediction equations including several parameters are being used, with the Modification of Diet in Renal Disease (MDRD), Schwartz, and Counahan–Barratt equations being the ones most widely accepted for estimation of relative GFR in mL · min−1 · (1.73 m2)−1. The present study analyzes whether these GFR prediction equations for adults and children might be replaced by simple prediction equations based on plasma concentrations of cystatin C. Methods: Data from 536 patients (0.3–93 years), consecutively referred for determination of GFR by an invasive gold standard procedure, were used for the analysis. Calculations of bias (median percentage of error), correlation (adjusted R 2), and percentage of estimates within 30% and 50% of measured GFR were used in the comparisons. Results: A cystatin C–based prediction equation using only concentration in mg/L and a prepubertal factor: GFR [mL · min−1 · (1.73 m2)−1] = 84.69 × cystatin C (mg/L)−1.680 × 1.384 (if a child <14 years) assessed GFR equally well or better than the simplified MDRD, the Schwartz, and the Counahan–Barratt prediction equations for the adult (≥18 years) and juvenile groups of the investigated cohort. Age did not influence the cystatin C–based prediction equation for adults, whereas gender did, but with a factor close to unity (0.948 for females). Conclusion: A GFR prediction equation based solely on cystatin C (in mg/L) and a prepubertal factor might replace the simplified MDRD prediction equation for adults and the Schwartz and Counahan–Barratt prediction equations for children.

Flooring panel or wall panel and use thereof

Abstract: Flooring panel or wall panel and a use thereof in a wet room. The panel is provided with a locking means in the form of groove (6) and tongue (7) forming a tongue/groove joint for assembling of the panels. The groove (6) and the tongue (7) are made of water tight material and formed with a snap-together joint.

A theory of network alteration for the Mullins effect

Abstract: This paper reports on the development of a new network alteration theory to describe the Mullins effect. The stress-softening phenomenon that occurs in rubber-like materials during cyclic loading is analysed from a physical point of view. The Mullins effect is considered to be a consequence of the breakage of links inside the material. Both filler-matrix and chain interaction links are involved in the phenomenon. This new alteration theory is implemented by modifying the eight-chains constitutive equation of Arruda and Boyce (J. Mech. Phys. Solids 41 (2) (1993) 389). In the present method the parameters of the eight-chains model, denoted C-R and N in the bibliography, become functions of the maximum chain stretch ratio. The accuracy of the resulting constitutive equation is demonstrated on cyclic uniaxial experiments for both natural rubbers and synthetic elastomers.

Flooring material comprising flooring elements which are assembled by means of separate joining elements

Abstract: Flooring material comprising board shaped floor elements with a rectangular oblong shape, which are provided with edges, a lower side and a decorative upper surface. The flooring material further includes joining profiles separate from the basic material of the floor elements. The floor elements may become fixed adjacent to each other, wherein the fixation is effective both horizontally and vertically. The vertical fixation is obtained through at least one of the joining profiles, which is not involved in the horizontal fixation.

Flooring material, comprising board shaped floor elements which are intended to be joined vertically

Abstract: Flooring material including floor boards (1) with an essentially square, rectangular or rhomboidal shape. The floor boards (1) are provided with edges (2), a horizontal lower side (5) and a horizontal decorative upper surface (3). The floor boards (1) are provided with lower joining lips (10) at two adjacent edges (2) while the two remainining edges (2) are provided with upper joining lips (20). The lower joining lips (10) are provided essentially vertical lower lip surfaces (11) arranged parallel to the closest edge (2). The lower lip surfaces (11) are intended to interact with mainly vertical upper lip surfaces (21) arranged on the upper joining lips (20). Two joined adjacent floor boards (1) are hereby locked together in a horizontal direction. The joining lips (10 and 20 respectively) are furthermore provided with one or more heels (31) intended to snap join with recesses (32) adapted thereto which, by being provided with essentially horizontal locking surfaces, limits vertical movement between two joined adjacent floor boards (1).