Abstract Introduction The traditional surgical management for acute Type A aortic dissection focuses on handling emergencies in the root and ascending aorta. remaining untreated distal portion of aorta has a potential risk rupture or causing malperfusion syndrome. Therefore, an aggressive repair approach using total arch replacement combined with frozen elephant trunk (FET) implantation been ad...

Abstract This study evaluated the influence of heating temperature variability on degradation level concrete by varying exposure temperatures (200°C, 450°C, and 800°C) design strength (C25 C40). The concretes were submitted to ultrasound tests (before after heating) then ruptured axial compression. After rupture, samples taken from fracture section specimens for microstructural analysis scannin...

Taking double-block ballastless track bed concrete as the object, influences of low-heat Portland cement (P·LH) and normal (P·O) on mechanical properties, adiabatic temperature rise, dry-shrinkage cracking sensitivity are studied. The results show that, prepared with two types can meet design requirements C40 concrete. It is also noticed that strength development different. That is, early P·LH ...

The pyrolysis of urban chlorine-containing polyolefinic plastic waste with simultaneous retention HCl is investigated. Different chemical removers based on sodium, calcium and zinc bases, different adsorbents alumina or zeolites were used inside the reactor in downstream hot filters, respectively, for chlorine removal upgrading oils. Initially, polyolefin (POW, containing a 98.5 wt% polyolefins...

Twenty-five weaned 35-day-old piglets were used in a 35-day growth experiment to evaluate the effect of inclusion of chicory and ribwort forage in a cereal-based diet on growth performance, feed intake, digestibility and shedding of faecal coliform bacteria. A total of seven experimental diets were formulated, a cereal-based basal diet (B), and six diets with inclusion of 40, 80 and 160 g/kg ch...

Esta investigación analiza la presencia de las megaciudades iberoamericanas en los medios comunicación digitales extranjeros el campo específico del cambio climático. El objetivo es determinar uso este canal para influir opinión pública y órganos decisión. Para ello, se estudia representación 30 ciudades textos periodísticos relacionados con climático mayor penetración (Spiegel, 20Minuten, DR N...

Abstract Asphalt is paved in several layers. A good layer bond between the individual asphalt layers necessary for a long service life of pavement. For many years, bitumen emulsions have been used to together accordance with requirements. Usually, emulsion sprayed and two steps. In first step, base emulsion. second after has broken, placed. However, paving can also be carried out using spray pa...

The field of high entropy materials provides a vast, multicomponent compositional space, where scientifically interesting and technologically important with novel properties can be identified. Recently, the design methodologies that are traditionally used for alloys have been extended to silicide materials, which particularly promising due their potential applications in microelectronics. In th...