“The purpose of this retrospective study was to find a method of improving the accuracy of fetal birth weight estimation on the basis of traditional ultrasonographic measurements click here of the head, thorax, and femur at term. In this context, we analyzed a novel regression method comparing to existing algorithms.
The delivery records of two hospitals were searched for women who delivered macrosomic infants, and the patients’ medical records were retrospectively reviewed in order to derive clinical and ultrasonographic data at term. A total of 223 patients with macrosomic
infants (birth weight > 4,000 g) were identified. These patients were complemented by data for 212 women who had ultrasound fetal assessments of less than 4,000
g. We used the method of isotonic regression to construct a birth weight prediction function that increases monotonically with each of the input variables and which minimizes the empirical quadratic loss.
A suspicion of macrosomia was based on a history of macrosomia, fundal height, and sonographic weight estimation > 4,000 g. The BIX 01294 mean period between ultrasound weight estimation and delivery was 7.2 days. The ability of the biometric algorithms developed to predict fetal weight at term ranged between a mean absolute error of 312 and 344 g, given a confidence interval of 95%. We demonstrate that predictions of birth weight on the basis of ultrasound data can be improved significantly, if an isotonic regression model is used instead of a linear regression model.
This study demonstrates that ultrasound detection of macrosomia can be improved using the isotonic regression method.”
“Resins with amine functionalities were obtained as a result of chemical modification of low crosslinked terpolymers of glycidyl methacrylate with styrene and divinylbenzene or diethylene glycol dimethacrylate. The
loading of amine groups, swelling in the selected organic solvents, and thermal properties of the resins were studied. FTIR, DSC, TGA, SEM, and stereomicroscopy methods were also applied for exploring buy CHIR-99021 of the resins. The amine functionalized resins were tested as sorbents for uptake of cobalt(II), copper(II), iron(III), and manganese(II) ions from methanol and its mixtures with methylene chloride. The study show that all polyamine functionalized resins uptake quickly Cu(II) ions from methanol solutions. Their ability to remove cobalt(II), iron(III), and manganese(II) ions from solution depended on the mutual compatibility of solvents and resins. It increases clearly when the mixtures of methanol and methylene chloride are applied. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“We examine habitat use by hunting hen harriers Circus cyaneus at three study sites in Scotland to evaluate whether foraging patterns differ between sexes, sites, and stages of the breeding period. We modelled time spent hunting in focal plots as a function of habitat and nest proximity.