BACKGROUND The global increase in C-section rates is real. In Brazil, these indices correspond to 58.94% in the Midwest region and 52.77% in the Federal District. OBJECTIVE To evaluate the C-section rates and identify the groups with the greatest risk at two reference hospitals in the public network of Federal District/Brazil, using 10-Group Robson System. METHOD A cross-sectional study of ...

Background. The skin-to-skin contact (SSC) of mother and newborn is uncommon full-term newborns after delivering via cesarean section due to the possibility of hypothermia in the infants. The aim of this study was to compare mothers' and infant's temperatures after delivering via cesarean section. Material and Methods. In this randomized clinical trial, 90 infant/mothers dyads delivered via ces...

In this paper, static performance of square concrete-filled double-skin steel tube (CFDST) chord to hollow section (SHS) brace T-joints are investigated through experimental and numerical studies. Twelve specimens, including 8 with CFDST chord, 2 (CFST) SHS as counterparts, were tested under continuously increasing compressive force on the concentric compression load applied simultaneously chor...

Abstract This paper investigates the robustness of a 6‐storey corner‐supported Modular Steel Building (MSB) under notional ground floor corner column removal (i.e. alternate path method). The assessment following structural effects that were frequently ignored for sake simplicity in existing numerical modelling approaches: (1) semi‐rigidity beam‐to‐column connections, and (2) initial out‐of‐str...

A complete analysis of light propagation through a hollow coupling with a uniformly varying cross section and specularly reflecting walls is given. This enables one to relate the entrance and exit intensity distributions when the input is incoherent but collimated. Results indicate that the input aperture can be partitioned into sections characterized by the total number of reflections an incom...

The structural behaviour and design of cold-formed steel square rectangular hollow section (SHS RHS) beam–columns, made both normal high strength steels, are investigated in the present study through a comprehensive numerical modelling programme. Refined finite element (FE) models were first established calibrated against collection existing member test results from literature. Following this, ...

We study theoretically the propagation of elastic waves in two-dimensional composite media composed of a square array of hollow steel cylinders embedded in water using the finite-difference time-domain method. These composite media constitute a class of acoustic band gap materials with narrow pass bands in their transmission stop bands. The frequency at which the pass band occurs is tunable by ...