Magnetic Properties of Linear Chain Systems: Metamagnetism of Single Crystal Co(pyridine)₂CI₂

The metamagnetic behavior of the low temperature properties of single crystal Co(pyridine)2Cl2 is discussed. At 1.25 K oriented single crystals exhibit a two-step metamagnetic transition at applied fields ~0.8 and 1.6 kG along the b-axis, a single transition at ~0.7 kG for applied fields along the a* axis, and a single transition at ~4.2 kG for an applied field along the c axis. Just above the transition fields a moment of 2µB/Co atom is measured for B0 parallel to the a* axis or b axis, and 0.4µB/Co atom is measured for the B0 parallel to the c axis. A large field dependent moment is observed at high fields. Many features of this compound closely mirror the behavior of CoCl2-2H20. However, the Co(pyridine)2Cl 2 has a much smaller interchain exchange, so that many features can be examined at lower fields. The basic features are consistent with a six-sublattice model for the ordered antiferromagnetic system. Measurements of magnetic moment versus temperature show that Co(pyridine)2Cl 2 does not obey a Curie-Weiss law even at relatively high temperatures

Evaluating the quality of interaction between medical students and nurses in a large teaching hospital

BACKGROUND: Effective health care depends on multidisciplinary collaboration and teamwork, yet little is known about how well medical students and nurses interact in the hospital environment, where physicians-in-training acquire their first experiences as members of the health care team. The objective of this study was to evaluate the quality of interaction between third-year medical students and nurses during clinical rotations. METHODS: We surveyed 268 Indiana University medical students and 175 nurses who worked at Indiana University Hospital, the School's chief clinical training site. The students had just completed their third year of training. The survey instrument consisted of 7 items that measured "relational coordination" among members of the health care team, and 9 items that measured psychological distress. RESULTS: Sixty-eight medical students (25.4%) and 99 nurses (56.6%) completed the survey. The relational coordination score (ranked 1 to 5, low to high), which provides an overall measure of interaction quality, showed that medical students interacted with residents the best (4.16) and with nurses the worst (2.98; p < 0.01). Conversely, nurses interacted with other nurses the best (4.36) and with medical students the worst (2.68; p < 0.01). Regarding measures of psychological distress (ranked 0 to 4, low to high), the interpersonal sensitivity score of medical students (1.56) was significantly greater than that of nurses (1.03; p < 0.01), whereas the hostility score of nurses (0.59) was significantly greater than that of medical students (0.39; p < 0.01). CONCLUSION: The quality of interaction between medical students and nurses during third-year clinical rotations is poor, which suggests that medical students are not receiving the sorts of educational experiences that promote optimal physician-nurse collaboration. Medical students and nurses experience different levels of psychological distress, which may adversely impact the quality of their interaction

Ageing, Temporality and Performance: Joan Rivers’ Body of Work

Joan Rivers’ performance in the public sphere revolved around the visibility and cultural inscription of an ageing and older woman. Linking aesthetic, professional and physiological processes, her body, work and performance merged as and in an extended and finite professional practice. A pioneer of stand-up comedy as a genre, and one of its most significant and visible female practitioners, Rivers is known for her aggressive and often outrageous wit, which was directed at both herself and other celebrities, as well as her extensive plastic surgeries. When she died in 2014, at the age of 81, she was still fully engaged in a relentless schedule of live performances and televised appearances. By then, Rivers was well established as an ubiquitously present elder who refused to conform to long-standing stereotypes of asexuality, able to thrive in a rapidly shifting cultural landscape of surgically enhanced bodies, surveillance as entertainment and public confession. At the heart of the discussion in this article is the spatio-temporality of the performing body, borrowing from Maurice Merleau-Ponty’s understanding of the body as a “nexus of living meanings” and Jacques Derrida’s development of Merleau-Ponty’s use of the term “invagination” to embrace generic textual strategy. In stand-up as a genre, both originality and continuity are paradoxically valued by audiences in equal measure. Success – that is, laughter – is largely determined by the extent to which these align coherently with the comedian’s bodily presence and her onstage social, cultural and/or political positioning. Focusing primarily on the expression of Rivers’ persona via a variety of mutually reinforcing cultural texts in the final three years of her life, this article analyses how her performing body in every medium was importantly always made present through its sexual difference and attendant gendered ageing processes

The Economic Impact On Under Developed Societies

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