New insights in the origin and evolution of the old, metal-rich open cluster NGC 6791

NGC 6791 is one of the most studied open clusters, it is massive ($\sim5000\,M_{\odot}$), located at the solar circle, old ($~8\,$Gyr) and yet the most metal-rich cluster (${\rm [Fe/H]}\simeq0.4$) known in the Milky Way. By performing an orbital analysis within a Galactic model including spiral arms and a bar, we found that it is plausible that NGC 6791 formed in the inner thin disc or in the bulge, and later displaced by radial migration to its current orbit. We apply different tools to simulate NGC 6791, including direct $N$-body summation in time-varying potentials, to test its survivability when going through different Galactic environments. In order to survive the 8 Gyr journey moving on a migrating orbit, NGC 6791 must have been more massive, $M_0 \geq 5\times10^4 M_{\odot}$, when formed. We find independent confirmation of this initial mass in the stellar mass function, which is observed to be flat; this can only be explained if the average tidal field strength experienced by the cluster is stronger than what it is at its current orbit. Therefore, the birth place and journeys of NGC 6791 are imprinted in its chemical composition, in its mass loss, and in its flat stellar mass function, supporting its origin in the inner thin disc or in the bulge.Comment: 14 pages, 10 Figures, 3 Tables. Accepted for publication in MNRA

Environmental Activists Share Knowledge and Experiences: Description and Evaluation of STP Schools at the Highlander Research and Education Center

Also PCMA Working Paper #29.http://deepblue.lib.umich.edu/bitstream/2027.42/51208/1/441.pd

Psychosocial Needs-Assessment with Families Experiencing Cancer: Executive Summary

http://deepblue.lib.umich.edu/bitstream/2027.42/51171/1/404.pd

Beware, Migrating Spouses, Texas Lacks a Quasi-Community Property Statute: It Could Be a Long Cold Winter

This article briefly outlines the community property and common law property systems and gives a brief history of wills. Next follows a discussion of built-in protections provided spouses in the community and common law property systems. Third, this article addresses how a spouse migrating to Texas from a common law state can be effectively left without support when her property-acquiring spouse devises property the couple acquired during marriage to a third party. Fourth, this article contends that quasi-community property principles should be employed in probate contexts to provide widowed migrating, non-acquiring spouses equitable property distributions similar to the way they apply in cases of divorce in Texas and in accordance with the jurisdictions of California, Idaho, Washington, and Louisiana. Finally, this article argues the Texas Legislature should amend the Texas Probate Code and suggests proposed legislation to correct the present inequity

Self-Helf Groups: A Comparative and International Study of Social Support and Social Action

http://deepblue.lib.umich.edu/bitstream/2027.42/51145/1/377.pd

Service Usage and Need: Reports from Patients and Significant Others Dealing with Leukemia and Lymphoma

http://deepblue.lib.umich.edu/bitstream/2027.42/51177/1/410.pd

Giving and Receiving Social Support: A Special Challenge for Leukemia and Lymphoma Patients and their Families

http://deepblue.lib.umich.edu/bitstream/2027.42/51187/1/420.pd

Allozyme variation amongst populations of the freshwater crab, Potamonautes perlatus (Decapoda: Potamonautidae) in the Berg River system, Western Cape

The Cape river crab, Potamonautes perlatus, is widely distributed in streams and rivers of the Western Cape where it exhibits considerable morphological variation. Recent genetic work on populations in the Olifants River system has demonstrated the existence of a new cryptic species of river crab, while populations of P. perlatus in the nearby Berg River system remained uninvestigated. Six populations of P. perlatus  were collected from along the length of the Berg River system (125 km) and the genetic structure was investigated using allozyme electrophoresis. Results from 14 allozyme loci showed that the populations were genetically invariant across the river system. It is suggested that gene flow may be responsible for the poor genetic differentiation amongst populations in the Berg River system. The implication for future management of the system is briefly discussed

Coping With Cancer: Life Changes Reported by Patients and Significant Others Dealing with Leukemia and Lymphoma

http://deepblue.lib.umich.edu/bitstream/2027.42/51194/1/427.pd