Steel and elastomer assembly that has a central through-passage equal to or greater in diameter than the riser bore and that may be positioned in the riser string to reduce local bending stresses.
The Mazatec people are an indigenous people who inhabit an area known as the Sierra Mazateca in the state of Oaxaca in southern Mexico, as well as some communities in the adjacent states of Puebla and Veracruz.
Often the term Aztec refers exclusively to the Mexica people of Tenochtitlan (now the location of Mexico City), situated on an island in Lake Texcoco, who referred to themselves as MÄxihcah Tenochcah [meËËÊiÊkaÊ teËnotÍ¡ÊkaÊ] or CÅlhuah Mexihcah [ËkoËlwaÊ meËËÊiÊkaÊ] .ztec culture is the culture of the people referred to as Aztecs, but since all ethnic groups of central Mexico in the postclassic period shared most basic cultural traits, many of the basic traits of Aztec culture cannot be said to be exclusive for the Aztecs.