Chameleon Fragmentation

A scalar field dark energy candidate could couple to ordinary matter and photons, enabling its detection in laboratory experiments. Here we study the quantum properties of the chameleon field, one such dark energy candidate, in an "afterglow" experiment designed to produce, trap, and detect chameleon particles. In particular, we investigate the possible fragmentation of a beam of chameleon particles into multiple particle states due to the highly non-linear interaction terms in the chameleon Lagrangian. Fragmentation could weaken the constraints of an afterglow experiment by reducing the energy of the regenerated photons, but this energy reduction also provides a unique signature which could be detected by a properly-designed experiment. We show that constraints from the CHASE experiment are essentially unaffected by fragmentation for $\phi^4$ and $1/\phi$ potentials, but are weakened for steeper potentials, and we discuss possible future afterglow experiments.Comment: 27 pages, 7 figure

A Real Separation of Powers or Separation of Law: Can an Article I Administrative Agency Nullify an Article III Federal Court Judgment?

This Article concerns whether and how Article I administrative agencies can overturn the final judgment of an Article III federal court. The Article identifies if there really is a constitutional crisis afoot because of a violation of the separation of powers doctrine. It also addresses the concern that the federal court is the final arbiter of a legal dispute and that neither Congress nor an agency can step in to undo that which the federal court has done. The Article focuses on the newly enacted America Invents Act and the current use of administrative agency proceeding to reexamine issued patents as a tool to nullify patent infringement judgments

Assessment of anaemia in adolescent girls

Background: The world’s adolescent population is facing a series of serious nutritional challenges which are not only affecting their growth and development but also their livelihood as adults. Yet, adolescents remain a largely neglected, difficult to measure and hard to reach population, in which the needs of adolescent girls in particular, are often ignored. Anemia in adolescent girls contributes to maternal and foetal mortality and morbidity in future. The objective of the study was to estimate the frequency of anemia among adolescent girls, to study the socio-demographic factors associated with anemia and to evaluate the cause and type of anaemia.Methods: A cross-sectional survey was conducted in an urban area in a school. A total of 300 girls (12-18 years) were included in this study. Statistical analysis was done using percentage, standard error of proportion, Chi-square test and student’s t-test.Results: The prevalence of anemia was found to be 90%. A significant association of anemia was found with socio-economic status and literacy status of parents. Mean height and weight of subjects with anemia was significantly less than subjects without anemia. A high prevalence of anemia among adolescent females was found, among those whose parents were less educated.Conclusions: The overall prevalence of anemia among adolescent females was found to be 90%. There is significant association of anemia with socio-economic status and parents' educational status. There is need to increase awareness of anemia in adolescent girls and parents