Courtship behavior of Mesoclemmys vanderhaegei (Bour, 1973) (Testudines: Chelidae) under natural conditions in the Brazilian Cerrado

Mesoclemmys vanderhaegei is a Neotropical chelid lacking basic natural history studies. Based on a film made in December 2004, we describe the courtship behavior in this species. Field observations were conducted at Chapada dos Guimarães, Mato Grosso State, southwestern Brazil, in an oligotrophic stream amidst the savannah like Cerrado formation. We provide a schematic drawing of the behavioral sequences during courtship, as well as a flow diagram describing sequential responses of the female to the male behavioral patterns. Mesoclemmys vanderhaegei courtship behavior is similar to that described for other freshwater chelonians.

Análise da confiabilidade de equipamentos em uma indústria química com aplicações de ferramentas da melhoria contínua

The constant search for improvements and the survival of organizations makes the strategic guidelines are deployed and executed at the operational levels. This work is the approach to critical analysis of the equipment of a chemical industry through a case study based on the classification of each equipment manufactures through qualitative and quantitative analysis on the pillars of maintenance costs, loss of production, MTBF, contribution margin, Health Safety and Environment (SHE). From this study and future data collection, along with the flow diagram show the main equipment that should be special attention. To this can be prepared an action plan with deadlines and responsible. With the results one can measure the maintenance costs, loss of production and technical availability of the plant, with future gains

Anomalous flow behaviour of bauxite tailings

This paper deals with the anomalous flow behaviour observed in two bauxite tailings pumping systems, with 450 mm and 680 mm outer diameter. In order to enlarge the pipeline lengths in the field, tests were carried out in a laboratory test-loop in order to try to understand the anomalous (intermittent) flow behaviour and to solve the problem. Based on data obtained from these laboratory tests and using a generalized REYNOLDS number it was possible to obtain results that fit the MOODY ROUSE diagram.