This contribution describes the latest milestones of a multiyear program to build and operate a compact -300 kV dc high voltage photogun with inverted insulator geometry and alkali-antimonide photocathodes.Photocathode thermal emittance measurements and quantum efficiency charge Lego Minifigure lifetime measurements at average current up to 4.5 mA
The article presents the records of the world and Russian athletes veterans in the hammer throw, starting with the age group 35-39 years and up to age group 100-104 years, and a comparison of the records of veterans subject to an age factor and of the high scores of athletes in the current sports.The aim of the work is to analyze the level and dyna
The orthotropic steel-box girder (OSG) is widely used in the construction of a large-scale bridges.Since cumulative damages caused by the heavy vehicles and initial flaws of welding, the bridges with OSGs AMINO 1 FRUIT PUNCH frequently suffer from fatigue cracks, which are commonly distributed around U-ribs.Hence, the management of fatigue cracks i
This paper doesn’t attempt to situate the figure of Paulo Freire in the context of Latin America or international pedagogy.In this paper, the author presents a synthesis of the Angicos (Braisl) political literacy experience, asking what Freire learned from the Angiços experience.The following questions are developed in the paper: How Freire cons
Semiconducting materials are the foundations of electronics and optoelectronics, and their heat management guides the design of highly efficient devices.For most semiconductors, the thermal conductivity of materials composed of light chemical species is higher than that of the iso-structured materials with heavy elements.For example, bulk Si shows