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The article examines that in Moscow, tunnels and metro stations enabled tens of thousands of people to escape the disaster. Topics include reports that sparingly lit by back-up generators, they survive by scavenging seeping water, growing mushrooms, raising pigs and hunting rats as equipped with armor and gas masks, Stalkers regularly face the perils of the surface to bring back whatever the station communities lack.

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The present study deals with a compression-absorption machine. The proposed hybrid system operates with water-ammonia and functions at three pressure levels. The absorber operates at an intermediate pressure Pint taken between the evaporator pressure (PEV) and the condenser pressure (PCD), unlike the one stage machine which functions at two level pressures. The system object of this work is examined and compared to the conventional cycle. The analyses of the numerical results highlight that the coefficient of performance of the novel proposed configuration is better than that relative to the simple effect absorption machine and reveals the great importance of the intermediate pressure not only in the performance improvement but also on reducing the generator temperature allowing the system to operate at low enthalpy sources. We showed for an evaporator temperature and a condenser temperature fixed respectively to -10 °C and 40 °C, the proposed hybrid refrigeration cycle, operates at a generator temperature TGE = 75 °C with an installation's COP about 0.56. [ABSTRACT FROM AUTHOR]

This article briefly describes how wind turbines work. A stand is erected that reaches between 50 and 110 meters high. On top of this, a compartment is attached that holds a horizontal axis rotor. Three blades between 40 and 120 meters in length are attached to this. The wind can turn these blades between 10 to 25 revolutions per minute. This is converted by the compartment on top of the stand into electric power.