Industrial structures built with different materials and methods play an important role in the sector development of industry increase energy need. Many parameters are considered design application phase industrial to provide service for many years. The aim this study is examine dynamic behavior reinforced concrete chimneys depending on soil-structure interaction (SSI). For reason, a chimney, w...

To address the scarcity of natural convection research for tube array with three or more columns horizontally-aligned cylinders, this paper conducts RANS/URANS simulations multiple cylinder in one two rows, validated by particle-image velocimetry and heat transfer measurements. Parametric study varying horizontal vertical pitches is implemented RANS transition SST model. Key findings are then s...

The effect of brickworks emissions on heavy metal content of soil and plants around the brick kiln chimneys was studied in the year 2006. Two brick kilns (A and B) about 600 m away from Ring Road at SufaidDheri on southerrn side of Peshawar, Pakistan were selected for this study. The two bricks kilns were North-South to each other with 300 m distance in between, such that South direction from b...

An 83-year-old man with aortic arch aneurysm underwent zone 0 thoracic endovascular aortic repair (TEVAR) by the chimney graft technique with two supra-aortic arch debranching grafts and developed subacute type A ascending aortic dissection. We performed emergency open conversion with circulatory arrest under deep hypothermia. The tip of the chimney graft (around the sino-tubular junction in th...

Endovascular aneurysm repair is a minimally invasive, durable and effective alternative to open surgery for treatment of abdominal aortic aneurysms (AAA). However, in patients who do not have an adequate sealing zone, open surgical repair is required, which may increase mortality and morbidity. An alternative treatment in patients with challenging anatomy is the so-called "chimney graft" techni...

The dispersion of pollutants, resulting from industrial chimneys, in the surrounding atmosphere made the interest in realizing emitting conditions appears. It also encourages the vertical dispersion of these pollutants. At a given wind velocity, the height of this dispersion is essentially a function of the thermal power and the flow rate at the chimney exit. To improve these qualities, we prop...

BACKGROUND The chimney/periscope technique has been used to address complex aortic pathologies. This study aimed to report the outcomes and experiences of chimney and/or periscope grafts (CPGs) used in the endovascular management of complex aortic pathologies. METHODS Twenty-two patients with complex aortic pathologies were retrospectively studied from January 2013 to August 2016 in two vascu...