Hydropower, a clean and renewable energy resource, has been developed worldwide for the economic development and improvement of people's living standards. It has also been used to improve the stability of the smart power grid. Depending on the water head of hydropower plants, various types of hydraulic turbines such as Francis, Kaplan and Pelton have been designed to maximize efficiency. Franci...

A 53 year old man presented with massive haemoptysis, and chest radiography revealed a left suprahilar mass. At thoracotomy he was found to have a modular mass in the left upper lobe, which was attached to a peripheral bronchus. Histology confirmed a pulmonary hamartoma.

Lung malignancy invading the left atrium is rarely seen. We present a patient with a fast growing symptomatic lung mass. Electrocardiogram showed persistent coving ST elevation with no biomarker change. Transthoracic echocardiography showed a large left atrial mass attached to the free walls and extended into its appendage. An apparent continuity with a large lung mass compressing left ventricu...