Managing Student Employees

Many of us in public, academic, school, and special libraries find ourselves supervising student workers. This article will examine different aspects of the student employee experience, from the hiring process to bringing students into the organization to assessing the mutual benefits gained from hiring student workers

Placental Development and Expression of Calcium Transporting Proteins in the Extraembryonic Membranes of a Placentotrophic Lizard

Pseudemoia pagenstecheri is a viviparous Australian scincid lizard in which the maternal-embryonic placental interface is differentiated into structurally distinct regions. The chorioallantoic placenta contains an elliptical-shaped region, the placentome, characterized by hypertrophied uterine and embryonic epithelial cells supported by dense vascular networks. The remainder of the chorioallantoic placenta, the paraplacentome, is also highly vascularized but uterine and chorionic epithelia are thin. An omphaloplacenta with hypertrophied epithelia is located in the abembryonic hemisphere of the egg. There is extensive placental transport of organic and inorganic nutrients, e.g., 85-90% of neonatal calcium is received via placental transfer. Calcium uptake by extraembryonic membranes of squamates correlates with expression of the intracellular calcium binding protein, calbindin-D 28K, and plasma membrane calcium ATPase (PMCA) is a marker for active calcium transport. We estimated expression of calbindin-D 28K and PMCA in the chorioallantoic membrane in a developmental series of embryos using immunoblotting and used immunohistochemistry to define the cellular localization of calbindin-D 28K to test the hypotheses that 1) expression of calcium transporting proteins is coincident with placental transport of calcium and 2) the placenta is functionally specialized for calcium transport in regions of structural differentiation. Calbindin-D 28K and PMCA were detected at low levels in early stages of development and increased significantly prior to birth, when embryonic calcium uptake peaks. These data support the hypothesis that placental calcium secretion occurs over an extended interval of gestation, with increasing activity as embryonic demand escalates in late development. In addition, calbindin-D 28K expression is localized in chorionic epithelial cells of the placentome and in the epithelium of the omphalopleure of the omphaloplacenta, which supports the hypothesis that regional structural differentiation in the placenta reflects functional specializations for calcium transport

In whom we trust: factors that influence university student

This paper explores the sources of parenting help and child growth and development information for parents who are also college students. Student parents' levels of hope in relationship to their likelihood to accept help and information from a variety of sources is also examined. The characteristics student parents find important in a source of parenting help and child growth and development information is explored. Student parents were neither likely nor unlikely to accept parenting help or child growth and behavior information from someone other than their trusted source. Student parents also reported that they would be likely to accept this kind of information from someone with a university degree in a child development related field. Student parents were most likely to turn to their own parents when in need of help or information on child rearing. Student parents report that the most important characteristics they look for in a source of parenting help and child growth and behavior information is that the information provider has parenting experience and that he or she has a university degree in a child development related field. (Published By University of Alabama Libraries