this paper showed the results of a qualitative investigation that looked into intracultural communication between brazilian teachers and students of english, and intercultural communication between american teachers and brazilian students of english. the aims were to identify and describe contextualization cues used by both brazilian and american speakers of english, and to connect these cues w...

In a rail track structure, turnout is used as transition between straight and branching rails therefore withstands complex dynamic rolling impact loading. This paper reports comprehensive failure investigation of railway off-track made from Hadfield austenitic cast steel. The worn was examined using optical microscopy, scanning electron micro-hardness, quantitative X-ray diffraction analyses. A...

this paper showed the results of a qualitative investigation that looked into intracultural communication between brazilian teachers and students of english, and intercultural communication between american teachers and brazilian students of english. the aims were to identify and describe contextualization cues used by both brazilian and american speakers of english, and to connect these cues w...

This paper showed the results of a qualitative investigation that looked into intracultural communication between Brazilian teachers and students of English, and intercultural communication between American teachers and Brazilian students of English. The aims were to identify and describe contextualization cues used by both Brazilian and American speakers of English, and to connect these cues w...

A new test method has been developed to measure the resistance of dynamic fracture initiation in brittle materials under combined mode I/I loadings. The Brazilian disks with center-cracks have been fractured under oblique impact loadings in diarnetral-compression. The dynamic stress intensity factors of mode I and H are evaluated from the superposition integrals of the step response functions f...

The role of skin irritation and other factors on the tumorigenic activity of petroleum middle distillates (PMDs) in mice was examined in a comprehensive research program. The program culminated in a 2-year dermal carcinogenicity study which compared the effects of equal weekly doses of irritating and nonirritating PMDs. Modified Ames mutagenicity studies and three- to seven-ring polycyclic arom...

Light and middle atmospheric distillate petroleum substances are blended to produce fuels used in transportation and heating. These substances represent the majority by volume of crude oil refined products in the United States. The goal of this research was to develop biodegradability and aquatic toxicity data for four substances; heavy, straight-run naphtha (HSRN), hydro-desulfurized kerosene ...