Teaching Cellular Respiration & Alternate Energy Sources with a Laboratory Exercise Developed by a Scientist-Teacher Partnership

2009 ◽  
Vol 71 (3) ◽  
pp. 164-167 ◽  
Author(s):  
Brandon Briggs ◽  
Teri Mitton ◽  
Rosemary Smith ◽  
Timothy Magnuson
Keyword(s):  
Cellular Respiration ◽  
Energy Sources ◽  
Laboratory Exercise ◽  
Alternate Energy

Development of Pem Fuel Cell in Pakistan

2009 ◽  
Vol 20 (4) ◽  
pp. 597-604 ◽  
Author(s):  
R. Raza ◽  
S. A. Hayat ◽  
M. Ashraf Chaudhry ◽  
J. Muhammad
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Pem Fuel Cell ◽  
Graphical Form ◽  
Energy Sources ◽  
Global Approach ◽  
Alternate Energy ◽  
The Impact ◽  
Energy Shortage

There is a worldwide awareness for finding alternate energy sources. Fuel cells are seen as potential candidates to fill the upcoming energy shortage gap. In line with this global approach, an initiative has been undertaken for developing Fuel Cells in Pakistan. Accordingly, a prototype Fuel Cell was developed. Different experiments were conducted to gauge its performance. The results are presented in the graphical form. The study has also been extended to measure the impact of catalyst on various performance determining parameters of the Fuel Cell.

scholarly journals Surgical Treatment of Atrial Fibrillation: A Review

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Nadine Hiari
Keyword(s):  
Atrial Fibrillation ◽  
Surgical Treatment ◽  
Conduction Block ◽  
Surgical Techniques ◽  
Maze Procedure ◽  
Energy Sources ◽  
High Recurrence Rate ◽  
Surgical Ablation ◽  
Alternate Energy

Atrial fibrillation is the most commonly sustained arrhythmia in man. While it affects millions of patients worldwide, its incidence will markedly increase with an aging population. Primary goals of AF therapy are to (1) reduce embolic complications, particularly stroke, (2) alleviate symptoms, and (3) prevent long-term heart remodelling. These have been proven to be a challenge as there are major limitations in our knowledge of the pathological and electrophysiological mechanisms underlying AF. Although advances continue to be made in the medical management of this condition, pharmacotherapy is often unsuccessful. Because of the high recurrence rate of AF despite antiarrhythmic drug therapy for maintenance of sinus rhythm and the adverse effects of these drugs, there has been growing interest in nonpharmacological strategies. Surgery for treatment of AF has been around for some time. The Cox-Maze procedure is the gold standard for the surgical treatment of atrial fibrillation and has more than 90% success in eliminating atrial fibrillation. Although the cut and sew maze is very effective, it has been superseded by newer operations that rely on alternate energy sources to create lines of conduction block. In addition, the evolution of improved ablation technology and instrumentation has facilitated the development of minimally invasive approaches. In this paper, the rationale for surgical ablation for atrial fibrillation and the different surgical techniques that were developed will be explored. In addition, it will detail the new approaches to surgical ablation of atrial fibrillation that employ alternate energy sources.

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