Right pulmonary artery agenesis presenting with uncontrolled asthma in an adult: a case report

<p>Abstract</p> <p>Introduction</p> <p>Unilateral absence of the pulmonary artery (UAPA) or pulmonary artery agenesis is a rare congenital disorder presenting with a wide spectrum of symptoms. The clinical presentation is variable and many patients can be asymptomatic for many years and even throughout their lives.</p> <p>Case presentation</p> <p>We report the case of a 53-year-old African-American woman who was diagnosed with right pulmonary artery agenesis after presenting with uncontrolled asthma and recurrent bronchopulmonary infections.</p> <p>Conclusion</p> <p>In an unexplained case of recurrent respiratory infections and shortness of breath, the possibility of a rare congenital anomaly like UAPA should be considered and an appropriate evaluation should be done.</p

Solar thermal collectors - Chapter 6

In this chapter, a summary review on a large variety of solar-based thermal energy conversion available technologies are presented. Specifically, the following investigated devices are suitably for the conversion of solar energy to provide heating for the hydrogen production. The chapter is subdivided into three sections. In the introductory section, the classification of the solar thermal collectors is reported. It also gives the definitions of different features characterizing solar thermal devices. Note that, the presented classification is based on these features. The second section gives an analysis of non-concentrator solar thermal collector. Both flat plate and evacuated tube technologies are investigated. Also, it provides information regarding optical and thermal performances of such devices and introduce how they can be physically modeled. In third section, the concentrator solar thermal collectors are introduced. Specifically, the compound parabolic, the parabolic through collectors, the linear Fresnel, and the parabolic dishes are here investigated