TLA is a general purpose, formal specification language based on the Temporal Logic of Actions, with no built-in primitives for specifying real-time properties. Here, we use TLA to define operators for specifying the temporal behavior of physical components obeying integral equations of evolution. These operators, together with previously defined operators for describing timing constraints, are...

A 65-year-old male presented with chronic mechanical back pain and a 6-month history of a discrete, hyperpig-mented reticular rash on his lower back. On further questioning, the patient admitted to daily use of an electric heating pad over the distribution of the rash (Figure 1). The diagnosis was erythema ab igne (EAI). Historically, EAI has been associated with repeated and prolonged exposure...

farming organic vegetable and crops have grown as a market desiring commodity. weed control in farms has been costly and laborous and it has always been hard to achieve a proper weeding. a few chemicals are commonly applied in organic farming. thermal weeding with flame burners seems a good solution; however, it has its own drawbacks, such as; damaging the main crops, low performance, being inf...

The extinction process of cup-burner flames under normal-gravity conditions were previously studied. As the low-speed diffusion flames behave differently in microgravity compared to those on earth, it is important to understand the structure of cup-burner flame and its extinction characteristics under 0g conditions. A numerical study was performed in the present paper using a time-dependent, ax...

The conditions under which it is possible to burn gases with different Wobbe numbers, such as natural and process gases, in one burner device are given. design of the burner, its characteristics results implementation on sintering machine KM-14 when converting from a mixture particular coke blast furnace. criterion Py = Vсм1/Vсм2 ≅ 1.0 proposed, additional for substitution burner. Бібл. 13, таб...

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A noble low NOx combustion technology, based on partial oxidation combustion concept in a fuel rich combustion zone, is successfully applied in this research. The burner is designed such that a portion of fuel is heated and pre-vaporized in the furnace then injected into a fuel rich combustion zone so that a partial oxidation reaction occurs. The effects of equivalence ratio, thermal load, and ...