Multiplexing Prisms for Field Expansion

Multiplexing Prisms for Field Expansion.

PURPOSE Prisms used for field expansion are limited by the optical scotoma at a prism apex (apical scotoma). For a patient with two functioning eyes, fitting prisms unilaterally allows the other eye to compensate for the apical scotoma. A monocular patient's field loss cannot be expanded with a conventional or Fresnel prism because of the apical scotoma. A newly invented optical device, the mul...

Field Expansion for Homonymous Hemianopia

Visual field loss following a cortical lesion from stroke, brain surgery, or head trauma frequently manifests as homonymous hemianopia. Hemianopic field loss causes problems in mobility and navigation as well as reading. Patients frequently complain of bumping into obstacles on the side of the field loss and getting bruised on their arms and legs. The number of such accidents decreases with ada...

Techno-Economic and Environmental Evaluation of Expansion Turbines for Gas Field Improvement (Case study)

Regarding the increased energy consumption of the processes at the operational units in the National Iranian Oil Company, the present study analyzed energy consumption at one of the gas refineries. In this refinery, which is the main supplier of Fajr Jam refinery for the national gas network, as well as an injection into the oil fields of the Iranian South oil company, the pressure of gas after...

Far Field Expansion for Anisotropic Wave Equations

Common Development of Prisms, Anti-Prisms, Tetrahedra, and Wedges

We construct an uncountably infinite family of unfoldings, each of which can be folded into twelve distinct convex solids, while also tiling the plane.