The rich countries of Western Europe and its citizens benefited during at least the last 30 years from an extraordinary stable electricity grid. This stability was achieved by the european grid system and a large flexible and reliable spare power plant capacity. This system allowed a continuous demand growth during the past 10-20 years of up to a few % per year. However, partially due to this o...

introduction: traumatic dental injuries (tdi) in children and adolescents are a common dental health problem and the prevalence of these injuries has increased during the past few decades. the aim of this paper was to evaluate the data of the patients with dental trauma in permanent teeth looking for treatment in the dental trauma clinic in the north-east of iran over 4 years. methods: during t...

during the past few years, the iranian system of education and research in law has received severe changes, which have seriously damaged this system, and consequently have led to the decline of the iranian legal system. some such changes are not limited to law; rather, they are present in other fields of human sciences. this can be partially due to university instructors (e.g., how they are rec...

During the past few years, a lot of work has been done on behavioral models and simulation tools. But a need for modeling strategy still remains. The VHDL-AMS language supports the description of analog electronic circuits using Ordinary Differential Algebraic Equations (ODAEs), in addition to its support for describing discrete-event systems. For VHDL-AMS to be useful to the analog design ...

During the past two decades anaphylactic phenomena induced by simple chemical compounds have been studied experimentally by a few investigators, especially by Landsteiner and Sulzberger and their collaborators in the United States of America. We also have carried out several experiments along this line, and our observations conducted in this laboratory are briefly described herein without refer...