We extended our previous analyses of term low birth weight (LBW) and preterm birth to 1994-2000, a period of declining air pollution levels in the South Coast Air Basin. We speculated that the effects we observed previously for carbon monoxide, particulate matter < 10 microm in aerodynamic diameter (PM10), and traffic density were attributable to toxins sorbed to primary exhaust particles. Focu...

BACKGROUND Pregnant women exposed to traffic pollution have an increased risk of negative birth outcomes. We aimed to investigate the size of this risk using a prospective cohort of 970 mothers and newborns in Logan, Queensland. METHODS We examined two measures of traffic: distance to nearest road and number of roads around the home. To examine the effect of distance we used the number of roa...

We present an improved comparison of the C, N, and O isotope ratios between the Sun and the interstellar medium, in which the birth-place of the Sun is taken into account. Such a comparison gives empirical information about the time evolution of the isotope ratios in the interstellar medium over the last 4.5.109 years. Wielen et al. (1996) have found that the Sun was born at a galactocentric di...

We build a functorial pipeline for persistent homology. The input to this is filtered simplicial complex indexed by any finite metric lattice, and the output persistence diagram defined as Möbius inversion of its birth-death function. adapt Reeb graph edit distance each our categories prove that both functors in are 1-Lipschitz, making stable. Our constructions generalize classical diagram, set...

in order to determine the exact birth rate and also percent of birth - orders in all births in the province of west azerbaijan, all centres of birth registration in the province were asked to fill a questionnaire at the time of issuing identity document for children. in the questionnaire, parents were asked to mention the place of birth, sex and birth order of the children and also the occupati...

introduction preterm birth is still a major health problem throughout the world. preterm birth results in 75% of neonatal mortality. we sought to identify risk factors which cause preterm birth. materials and methods this cross-sectional study assessed all preterm neonates born in asali hospital in khorram abad (either by nvd or c/s) during the first 6 months of 2007. sampling method was census...

We discuss the computation of a distance between two hierarchical clusterings of the same set. It is defined as the minimum number of elements that have to be removed so the remaining clusterings are equal. The problem of distance computing was extensively studied for partitions. We prove it can be solved in polynomial time in the case of hierarchies as it gives birth to a class of perfect grap...