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A note on the control of the solidification front in the continuous casting of copper tubes
(ELSEVIER SCIENCE SA, 1999)
This research studies the position of the solidification front in a continuous casting process of copper tubes to prevent the main failures derived from a lack of control on this front. Specifically, the point is to prevent ...
Caste flexibility and variation according to the colony cycle in the swarm-founding wasp, Parachartergus fraternus (Gribodo) (Hymenoptera : Vespidae : Epiponini)
(Kansas Entomological Soc, 2004-10-01)
Differences between castes and related aspects in Parachartegus fraternus (Gribodo) have been studied in various stages of the colony cycle. Five colonies from three colony development stages (namely, pre-emergence, ...
Caste Asymmetries in the Neotropical Swarm-Founding Wasp Polybia (Trychothorax) ignobilis (Hymenoptera, Vespidae, Epiponini)
(California State University, 2011-01-01)
Epiponini wasps are dominant in Neotropical regions and represent, in several ways, exceptions for general theories regarding social insects. They are highly eusocial and most species build large and complex nests. These ...
Caste Asymmetries in the Neotropical Swarm-Founding Wasp Polybia (Trychothorax) ignobilis (Hymenoptera, Vespidae, Epiponini)
(California State University, 2011-01-01)
Epiponini wasps are dominant in Neotropical regions and represent, in several ways, exceptions for general theories regarding social insects. They are highly eusocial and most species build large and complex nests. These ...
Caste asymmetries in the neotropical Swarm-founding wasp polybia (Trychothorax) ignobilis (Hymenoptera, Vespidae, Epiponini)
(2011-02-14)
Epiponini wasps are dominant in Neotropical regions and represent, in several ways, exceptions for general theories regarding social insects. They are highly eusocial and most species build large and complex nests. These ...
Mechanical properties of a carbide-free bainitic cast steel with dispersed free ferrite
(Maney Publishing, 2020-01)
A high silicon, medium carbon cast steel was designed and heat-treated in order to develop microstructures composed of carbide-free bainite and small amounts of free ferrite, with the aim of obtaining high strength cast ...
A surface and sub-surface quality evaluation of three cast iron grades after grinding under various cutting conditions
(Springer, 2018-11-01)
Grinding is one of the most common finishing processes used in the manufacture of metal components that require a combination of both smooth surface finish and tight tolerances. Despite the abundant knowledge concerning ...