Acute pharyngitis is one of the most common illnesses for which children in the United States visit primary care providers; pediatricians make the diagnosis of acute pharyngitis, acute tonsillitis, or “strep throat” more than 7 million times annually. A partial list of the more common microorganisms that can cause acute pharyngitis is presented in Table 27-1. Most cases in children and adolesce...

Thin-shell instability is one process which can generate entangled structures in astrophysical plasma on collisional (fluid) scales. It is driven by a spatially varying imbalance between the ram pressure of the inflowing upstream plasma and the downstream's thermal pressure at a nonplanar shock. Here we show by means of a particle-in-cell simulation that an analog process can destabilize a thin...

The topic of Hamiltonian chaos is a whole course in itself, and we will only touch on a few highlights. For further information see Ott chapter 7, and review papers by Berry [1] and Helleman [2]. The ideal pendulum discussed in chapter 2 is an example of a Hamiltonian system. In many ways this system is typical of the ones taught in elementary courses on mechanics: the orbits are periodic and c...

Background. The contributions of patients’ opinions to the evaluation of health care is widely acknowledged. This study investigates whether the patients of a fundholding practice perceived any changes in the services offered. Aim. To examine the effect of general practice fundholding on patient satisfaction with both primary and secondary care services. Method. In April 1992, questionnaires we...

27.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311 27.2 Success Stories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313 27.3 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 Bibl...