Differential SAR Interferometry (D-InSAR) is an effective tool in monitoring land subsidence because of its greater coverage area and better resolution of height change. A series of Japanese Earth Resources Satallite-1 (JERS-1) images from 1992 to 1998 has been used in monitoring the mine subsidence in the test site of this study, one of the important coal mining areas in China. D-InSAR procedu...

Apart from the history and traditions associated with this material, there are several questions that need to be answered. What exactly is Spanish jet? What is its nature? What are the reasons for its special properties and, above all, why has it retained its reputation over so many years as an unalterable material throughout time? Spanish jet is a humic coal, conventionally assimilated to a va...

Desert dermatology describes the cutaneous changes and the diseases affecting those living in the desert. Diurnal variation in temperature is high and is characteristic of the deserts. The lack of water affects daily activities and impacts dermatological conditions. Adaptation to the desert is, therefore, important to survival. Infections are the most common conditions seen among this populatio...

The aim of this paper is to prove that the question “is a scheduling functionally deterministic for a given set of periodic real time tasks and a given conservative scheduling policy” is decidable. For thar purpose, we encode the tasks and the scheduler by an acyclic stopwatch automaton. We show then that the previous question can be encoded by a decidable reachability problem.

The gasification of an aqueous suspension of lignite from Alexandria coalfield (Ukraine) under the supercritical pressure was studied. The initial rates of the formation of hydrogen, carbon dioxide and methane were evaluated. The mutually stimulating interaction of the components of "brown coal-water-mineral matter" system was shown due to the influence of nanoscaled water medium on the formati...