565 research outputs found
Prevalencia de caries dental en niños entre 1996–2000
Objectives This study was carried out to assess whether delaying umbilical cord clamping is effective in improving the haematological status of term infants living in a malaria-endemic area, and whether this is associated with complications in infants and mothers.
Metyhods We randomly assigned women delivering term babies in Mpongwe Mission Hospital, Zambia, to delayed cord clamping (DCC, n = 46) or immediate cord clamping (controls, n = 45) and followed their infants on a bi-monthly basis until the age of 6 months. We compared the haemoglobin (Hb) change from cord values and the proportion of anaemic infants. Secondary outcomes related to infant and maternal safety.
Results Throughout the observation period infant Hb levels in both groups declined, but more rapidly in controls than in the DCC group [difference in Hb change from baseline at 4 months 1.1 g/dl, 95% confidence interval (CI) 0.2; 2.1]. By 6 months, this difference had disappeared (0.0 g/dl, 95% CI -0.9; 0.8). The odds ratio for iron deficiency anaemia in the DCC group at 4 months was 0.3 (95% CI 0.1; 1.0), but no differences were found between the groups at 6 months. No adverse events were seen in infants and mothers.
Conclusion Our findings indicate that DCC could help improve the haematological status of term infants living in a malaria-endemic region at 4 months of age. However, the beneficial haematological effect disappeared by 6 months. This simple, free and safe delivery procedure might offer a strategy to reduce early infant anaemia risk, when other interventions are not yet feasible
Room temperature high frequency transport of Dirac fermions in epitaxially grown Sb_2Te_3 based topological insulators
We report on the observation of photogalvanic effects in epitaxially grown
Sb_2Te_3 three-dimensional (3D) topological insulators (TI). We show that
asymmetric scattering of Dirac electrons driven back and forth by the terahertz
electric field results in a dc electric current. Due to the "symmetry
filtration" the dc current is generated in the surface electrons only and
provides an opto-electronic access to probe the electric transport in TI,
surface domains orientation and details of electron scattering even in 3D TI at
room temperature where conventional surface electron transport is usually
hindered by the high carrier density in the bulk
Underground railroads: citizen entitlements and unauthorized mobility in the antebellum period and today
In recent years, some scholars and prominent political figures have advocated the deepening of North American integration on roughly the European Union model, including the creation of new political institutions and the free movement of workers across borders. The construction of such a North American Union, if it included even a very thin trans-state citizenship regime, could represent the most significant expansion of individual entitlements in the region since citizenship was extended to former slaves in the United States. With such a possibility as its starting point, this article explores some striking parallels between the mass, legally prohibited movement across boundaries by fugitive slaves in the pre-Civil War period, and that by current unauthorized migrants to the United States. Both were, or are, met on their journeys by historically parallel groups of would-be helpers and hinderers. Their unauthorized movements in both periods serve as important signals of incomplete entitlements or institutional protections. Most crucially, moral arguments for extending fuller entitlements to both groups are shown here to be less distinct than may be prima facie evident, reinforcing the case for expanding and deepening the regional membership regime
Dedication - John Simpson Hastings
The Board of Editors dedicates this issue of the Indiana Law Journal to the memory of the honorable John Simpson Hastings. In a manner befitting the man, many of Judge Hastings\u27 friends and associates have provided their personal remarks regarding his achievements on the bench and as an active alumnus of Indiana University. We hope that these remarks will serve in some small way to preserve the memory of a truly great man
Galactic vs. Extragalactic Origin of the Peculiar Transient SCP 06F6
We study four scenarios for the SCP 06F6 transient event that was announced
recently. Some of these were previously briefly discussed as plausible models
for SCP 06F6, in particular with the claimed detection of a z=0.143
cosmological redshift of a Swan spectrum of a carbon rich envelope. We adopt
this value of z for extragalactic scenarios. We cannot rule out any of these
models, but can rank them from most to least preferred. Our favorite model is a
tidal disruption of a CO white dwarf (WD) by an intermediate-mass black hole
(IMBH). To account for the properties of the SCP 06F6 event, we have to assume
the presence of a strong disk wind that was not included in previous numerical
simulations. If the IMBH is the central BH of a galaxy, this explains the non
detection of a bright galaxy in the direction of SCP 06F6. Our second favorite
scenario is a type Ia-like SN that exploded inside the dense wind of a carbon
star. The carbon star is the donor star of the exploded WD. Our third favorite
model is a Galactic source of an asteroid that collided with a WD. Such a
scenario was discussed in the past as the source of dusty disks around WDs, but
no predictions exist regarding the appearance of such an event. Our least
favorite model is of a core collapse SN. The only way we can account for the
properties of SCP 06F6 with a core collapse SN is if we assume the occurrence
of a rare type of binary interaction.Comment: Accepted by New Astronom
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