background: dystocia is one of the important causes of maternal morbidity and mortality in low-income countries. this study wasaimed to determine the diagnostic accuracy of maternal anthropometric measurements as predictors for dystocia in nulliparous women. materials and methods: this prospective cohort study was conducted on 447 nulliparous women who referred to omolbaninhospital. several mat...

density or gravity currents have been always one of the main causes for sedimentation along many of the dam reservoirs. so controlling this phenomenon is very important for increasing useful life of such reservoirs. in this research study the effect of a combination of rough bed and obstacle on the control of sedimentary density current has been investigated. experiments were conducted in a til...

background: limited data are available indicating associates of stunting among iranian c hildren. objective: this study was conducted to investigate determinants of stunting in first grade primary school children of tehran in 2007. methods: in this case‑control study, 3147 school children were selected by multistage cluster random sampling method from 5 districts of tehran. anthropometric measu...

Height growth velocity curves between 4.5 and 17.75 years were estimated, using smoothing spline functions, for 112 boys and 110 girls from the Zurich Longitudinal Study (1955--1976). Parameters characterizing the growth process, such as peak height velocity and age at peak height velocity, were calculated directly from the estimated curves. The variability of parameters describing the adolesce...

BACKGROUND Positive airway pressure (PAP) in subjects with both obstructive sleep apnea and COPD reduces the risk of pulmonary hypertension, death, and hospitalizations from COPD exacerbations, but adherence to the intervention is low, similar to the experience with noninvasive ventilation in stable COPD. We sought to assess whether hyperinflation on chest radiographs contributes to low adheren...

Density or gravity currents have been always one of the main causes for sedimentation along many of the dam reservoirs. So controlling this phenomenon is very important for increasing useful life of such reservoirs. In this research study the effect of a combination of rough bed and obstacle on the control of sedimentary density current has been investigated. Experiments were conducted in a til...

Introduction It is well-known that exposure to an enriched environment (EE) can induce plastic changes in the hippocampus and improves learning and memory in hippocampus-dependent tasks. The commonly used techniques in the previous studies on the effects of EE on brain include behavioral tests, electrophysiological recording, microdialysis and morphological evaluations of neurons and synapses. ...

This study evaluated the efficacy of a stepwise regimen of estradiol valerate for height control in girls with Marfan syndrome. Eight girls with Marfan syndrome who had completed estrogen treatment for height control were included. Estradiol valerate was started at a dose of 2 mg/day, and then was increased. The projected final height was estimated using the initial height percentile (on a dise...

The 351 .l-nm photoelectron spectra of HFC=C:and F2C=C:are reported. Transitions from the anion ground state to the neutral singlet ground state and low-lying triplet states are observed. The electron affinity of difluorovinylidene is 2.255 (6) eV, and the triplet term energy is To(H 3A2 F,CC) = 0.924 (9) eV. In the singlet state of F2C=C:, vibrational progressions are observed at 510 (25), 905...

[1] Total freeboard (snow and ice) of the Arctic Ocean sea ice cover is derived using Ice, Cloud, and land Elevation Satellite (ICESat) data from two 35-day periods: one during the fall (October November) of 2005 and the other during the winter (February March) of 2006. Three approaches are used to identify near-sea-surface tiepoints. Thin ice or open water samples in new openings, typically wi...