2,594 research outputs found
Remnants of Black Rings from Gravity's Rainbow
In this paper, we investigate a spinning black ring and a charged black ring
in the context of gravity's rainbow. By incorporating rainbow functions
proposed by Amelino-Camelia, et al. in [arXiv:hep-th/9605211,
arXiv:0806.0339v2] in the metric of the black rings, a considerable
modification happens to their thermodynamical properties. We calculate
corrections to the temperature, entropy and heat capacity of the black rings.
These calculations demonstrate that the behavior of Hawking radiation changes
considerably near the Planck scale in gravity's rainbow, where it is shown that
black rings do not evaporate completely and a remnant is left as the black
rings evaporate down to Planck scale.Comment: 14 pages, 6 figure
Remnant for all Black Objects due to Gravity's Rainbow
We argue that a remnant is formed for all black objects in gravity's rainbow.
This will be based on the observation that a remnant depends critically on the
structure of the rainbow functions, and this dependence is a model independent
phenomena. We thus propose general relations for the modified temperature and
entropy of all black objects in gravity's rainbow. We explicitly check this to
be the case for Kerr, Kerr-Newman-dS, charged-AdS, and higher dimensional
Kerr-AdS black holes. We also try to argue that a remnant should form for black
Saturn in gravity's rainbow. This work extends our previous results on remnants
of Schwarzschild black holes [ arXiv:1402.5320] and black rings
[arXiv:1409.5745].Comment: 21 pages, 13 figures, Accepted in Nucl.Phys.
A systematic review of the treatment and management of pre-eclampsia and eclampsia in Pakistan
Pakistan is one of the six countries that account for more than 50 percent of the world’s maternal deaths. According to Population Council estimates, each year nearly 8.6 million women become pregnant in the country. Of these, 1.2 million women are likely to face obstetric complications. Each year, there are nearly 14,000 pregnancy-related deaths. Information is lacking on context-specific health-system barriers that prevent optimal use of the lifesaving medicine magnesium sulfate (MgSO4) in Pakistan. Although efforts in Pakistan both at the national and subnational level are ongoing on the prevention and treatment of pre-eclampsia and eclampsia (PE/E), results are generally suboptimal and program interventions remain uncoordinated and fragmented. A fragmented system for registration, procurement, and distribution is at the source of the low use of magnesium sulfate, even though policies are all aligned with international standards. To fully appreciate the enormity of the problem at the country level, this systematic review of published papers on PE/E was conducted in Pakistan from 2005 to 2015 to understand key challenges, gaps, and interventions related to the prevention and treatment of pre-eclampsia and eclampsia
Economic Impact of North Dakota Laws that Permit Delayed or Partial Repayment of Agricultural Debt � July 1, 1986
Agricultural Finance,
Initial assessment of community midwives in rural Pakistan
The goal of this Population Council study, funded by USAID through the Pakistan Initiative for Mothers and Newborns (PAIMAN) project, was to assess the potential of community midwifery services in rural Pakistan in order to provide necessary evidence for future decisions regarding the training, practice, and placement of community midwives (CMWs). The introduction of a new cadre of skilled birth attendants is significant, especially at a time when Pakistan is working toward achieving the Millennium Development Goals. The report makes the following recommendations: 1) opportunities for practical training should be followed meticulously; 2) selection criteria should be revised especially for age and adherence to the requirement of being resident in the respective rural community; 3) uniformity of assessment must be ensured through the development of an assessment board; 4) the placement of CMWs must be linked with other program activities to facilitate referrals and promote health education; and 5) since supervision is a critical component for ensuring a high quality of services, standards should be developed for monitoring CMWs
Absence of Black Holes at LHC due to Gravity's Rainbow
In this paper, we investigate the effect of Planckian deformation of quantum
gravity on the production of black holes at colliders using the framework of
gravity's rainbow. We demonstrate that a black hole remnant exists for
Schwarzschild black holes in higher dimensions using gravity's rainbow. The
mass of this remnant is found to be greater than the energy scale at which
experiments were performed at the LHC. We propose this as a possible
explanation for the absence of black holes at the LHC. Furthermore, we
demonstrate that it is possible for black holes in six (and higher) dimensions
to be produced at energy scales that will be accessible in the near future.Comment: 16 pages, 5 figures, to appear in Phys. Lett.
Weight-Related Behavior among Adolescents: The Role of Peer Effects
To investigate whether social interactions in friendship networks influence the following weight-related behaviors of adolescents: exercising regularly, playing an active sport, hours of TV/Video viewing, sleeping six or fewer hours, eating breakfast on weekdays, frequency of eating at fast food restaurants, eating five servings of fruits/vegetables daily, and consuming calorie-dense snacks.Data from a nationally representative sample of adolescents are used to examine the association between peer and individual weight-related behaviors. Evidence from multivariate regression analysis controlling for an extensive list of individual- and family-level factors as well as school-level unobserved heterogeneity is obtained.We find a significant positive association between individuals' and friends' behaviors in terms of sports, exercise and fast food consumption. The estimated associations are robust to controls for individual- and family-level factors, unobserved heterogeneity at the school level and our attempts to account for non-random peer selection.The social transmission of weight-related behaviors is a viable explanation for the spread of obesity in friendship networks documented in recent research. Traditional weight reduction interventions may be fruitfully complemented with strategies that focus on harnessing peer support to modify behaviors
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