Isothermal cover with thermal reservoirs Patent

Double-wall isothermal cylinder containing heat transfer fluid thermal reservoir as spacecraft insulation cove

Heat pipe thermionic diode power system Patent

Electric power system utilizing thermionic plasma diodes in parallel and heat pipes as cathode

Responding to Afghanistan's Opium economy challenge : lessons and policy implications from a development perspective

Opium, Afghanistan's leading economic activity, lies at the heart of the challenges the country faces in state building, governance, security, and development. With their narrow law enforcement focus and limited recognition of development, security, and political implications, current global counter-narcotics polices impose a heavy burden on Afghanistan. This paper first provides a summary overview of Afghanistan's opium economy and the factors determining rural households'decisions on cultivating opium poppy. It then discusses the dynamic evolution of the Afghan drug industry in recent years, in particular its consolidation around fewer, powerful, politically-connected actors and the associated compromising of parts of some government agencies by drug industry interests. The paper reviews the experience with different counter-narcotics interventions, analyzes some proposals not yet tried in Afghanistan, and draws lessons and policy implications. Unfortunately there are no"silver bullets"-easy, quick, or one-dimensional solutions, and a longer-term horizon along with sustained commitment and resources will be required in order to phase out the opium economy over time. The paper concludes by putting forward some broad principles and approaches of a"smart strategy"against drugs in Afghanistan.Rural Poverty Reduction,Alcohol and Substance Abuse,Crops&Crop Management Systems,Economic Theory&Research,Pharmaceuticals Industry

Suitability of commercially available laboratory cryogenic refrigerators to support shipboard electro-optical systems in the 10 - 77 Kelvin region

The primary development of cryogenically cooled infrared systems was accomplished by FLIR systems designed for airborne, passive night vision. Essential to the development of these FLIR systems was a family of closed cycle refrigerators which had to meet a limited envelope requirement, utilize a nonlubricated compressor module, and be light in weight. Closed cycle refrigerators accomplished the same cooling function, they use modified oil lubricated reciprocating compressors which are limited in their axis of orientation to an angle of approximately 15-20 degrees maximum from horizon

Predatory Value: Economies of Dispossession and Disturbed Relationalities

This essay introduces and theorizes the central concerns of this special issue, “Economies of Dispossession: Indigeneity, Race, Capitalism.” Financialization, debt, and the accelerated concentration of wealth today work through social relations already configured and disposed by imperial conquest and racial capitalism. In the Americas broadly and the United States specifically, colonization and transatlantic slavery set in motion the dynamics and differential racialized valuations that continue to underwrite particular forms of subjection, property, commerce, and territoriality. The conception of economies of dispossession introduced in this essay draws attention to the overriding importance of rationalities of abstraction and commensurability for racial capitalism. The essay problematizes the ways in which dispossession is conventionally treated as a self-evident and circumscribed practice of unjust taking and subtractive action. Instead, working across the lethal confluences of imperial conquest and racial capitalist predation, this essay critically situates the logic of propriation that organizes and underwrites predatory value in the historical present. Against the commensurabilities and rationalities of debt and finance capitalism, conditioned through the proprietary logics of settler colonialism and racial capitalism, the essay gestures toward alternative frameworks for building collective capacities for what the authors describe as a grounded relationality