Anisotropic friction, deformation, and fracture of single-crystal silicon carbide at room temperature

Anisotropic friction, deformation, and fracture studies were conducted with /0001/, /10(-1)0/, and /11(-2)0/ silicon carbide surfaces in sliding contact with diamond. The experiments were conducted with loads of 0.1, 0.2, and 0.3 N at a sliding velocity of 3 mm/min in mineral oil or in dry argon at room temperature. The 1010 direction on the basal /0001/ plane exhibits the lowest coefficient of friction and the greatest resistance to abrasion for silicon carbide. Anisotropic friction and deformation of the /0001/, /10(-1)0/, and /11(-2)0/ silicon carbide surfaces are primarily controlled by the slip system /10(-1)0/ 11(-2)0. The anisotropic fracture during sliding on the basal plane is due to surface cracking along /10(-1)0/ and subsurface cracking along /0001/. The fracture during sliding on the /11(-2)0/ or /10(-1)0/ surfaces is due to surface cracking along /0001/ and /11(-2)0/ or /10(-1)-1 and to subsurface cracking along /10(-1)0/

Bibliografia sobre telenovela brasileira

The author points books, articles, thesis and dissertations centered on brazilian soap opera and its relations with other countries productions, with literature, cinema, media, education and reception studies.Indicação de livros, artigos, teses e dissertações que têm como foco de estudo a telenovela brasileira e suas relações com a produção de outros países, com a literatura, o cinema, a mídia, a educação e os estudos de recepção

Bibliografia sobre telenovela brasileira

The author points books, articles, thesis and dissertations centered on brazilian soap opera and its relations with other countries productions, with literature, cinema, media, education and reception studies.Indicação de livros, artigos, teses e dissertações que têm como foco de estudo a telenovela brasileira e suas relações com a produção de outros países, com a literatura, o cinema, a mídia, a educação e os estudos de recepção

Chemical and physical properties of human urine concentrates

Chemical and physical properties of human urine concentrate

CNC milling machine driving interface

Tato diplomová práce se zabývá návrhem a stavbou portálové CNC frézky určené primárně pro obrábění součástí z lehkých kovů a jejich slitin. V tomto dokumentu je popsán výběr mechanických komponent, návrh rámu frézky a průběh její stavby, návrh a stavba USB interpolační jednotky a vytvořený ovládací software.This project deals with portal-type CNC milling machine design and construction. CNC milling machine should be able to machining light metals and alloys. This document contains description of mechanical components selection, machine frame design and building, design and construction of USB motion control unit and also contains control software description and user manual.

Influence of family and work experience on occupational aspirations of adolescents : a path model

The purpose of this study was to develop a theoretical model from which to test the influence of family background and work experience on the level of rural high school students' (N=381) occupational aspirations. In the basic model mother's occupation directly influenced occupational aspirations, however, father's education influenced occupational aspirations directly but indirectly through academic achievement. The number of hours worked per week had a direct and negative influence on academic achievement. In a different path, hours worked had an indirect positive influence on academic achievement through parents' different treatment which especially focused on the fact that parents gave students more freedom compared to the relationship they shared before the students began to work. Also, job characteristics indirectly influenced occupational aspirations through work attitudes. Academic achievement had a greater total effect on level of occupational aspirations than did any other variable

catalog 1946-1947

https://kb.gcsu.edu/catalogs/1026/thumbnail.jp

Computer Method for Subdivision Planning, Design, and Mapping

Civil Engineerin