X-ray exposure sensor and controller

An exposure controller for x-ray equipment is provided, which comprises a portable and accurate sensor which can be placed adjacent to and directly beneath the area of interest of an x-ray plate, and which measures the amount of exposure received by that area, and turns off the x-ray equipment when the exposure for the particular area of interest on the x-ray plate reaches the value which provides an optimal x-ray plate

Apparatus in the form of a disk for the separation of oxygen from other gases and/or for the pumping of oxygen and the method of removing the oxygen

An apparatus in the form of a disk for the separation of oxygen from gases, or for the pumping of oxygen, uses a substantially circular disk geometry for the solid electrolyte with radial flow of gas from the outside edge of the disk to the center of the disk. The reduction in available surface area as the gas flows toward the center of the disk reduces the oxygen removal area proportionally to provide for a more uniform removal of oxygen

Global Ethnography

Globalization poses a challenge to existing social scientific methods of inquiry and units of analysis by destabilizing the embeddedness of social relations in particular communities and places. Ethnographic sites are globalized by means of various external connections across multiple spatial scales and porous and contested boundaries. Global ethnographers must begin their analysis by seeking out 'placemaking projects' that seek to define new kinds of places, with new definitions of social relations and their boundaries. Existing ethnographic studies of global processes tend to cluster under one of three slices of globalization 'global forces, connections, or imaginations' each defined by a different kind of place-making project. The extension of the site in time and space poses practical and conceptual problems for ethnographers, but also political ones. Nonetheless, by locating themselves firmly within the time and space of social actors 'living the global', ethnographers can reveal howglobal processes are collectively and politically constructed, demonstrating the variety of ways in which globalization is grounded in the local