2319 aluminum alloy parts was prepared by wire arc additive manufacturing technology.The corrosion properties of additively manufactured 2319 aluminum alloy and 2219 aluminum alloy sheets were systematically investigated by electrochemical tests and localized corrosion tests.The results of electrochemical tests showed that the 2219 aluminum alloy s
This paper considers that the discourses constitute and justify authorized ways of teaching.Thus, according to the games of truth, it is imposed to university teaching the innovation as condition to its presence.The aim of this paper is to provoke the problems facing the growing phenomenon of neophilia, the importance given to what is new, the obse
Germline stem cells in the Drosophila ovary are maintained by a somatic niche.The niche is structurally and functionally complex and contains four cell types, the escort, cap, and terminal filament cells and the newly identified transition cell.We find that the large Maf transcription factor Traffic jam (Tj) is essential for determining niche cell
This article addresses the problem of cardinality estimation in inner product spaces.Given a set of high-dimensional vectors, a query, and a threshold, this problem estimates the number of vectors such that their inner products with the query are not less than the threshold.This is an important problem for recent machine-learning applications that