Abstract This paper reviews strong stability preserving discrete variable methods for differential systems. The Runge–Kutta have been usually investigated in the literature on subject, using so-called Shu–Osher representation of these methods, as a convex combination first-order steps by forward Euler method. In this paper, we revisit analysis reformulating subclass general linear ordinary equa...

tracking and determining the amount and types of urban sewage that is being releasing to the environment is important in planning for wastewater treatment systems and water quality control. in this research, in four stations of anzali lagoon, (by means of a gas chromatograph device with mass detector spectrometer) wastewater pollution has been measured and evaluated with molecular indicator lin...

Two new penta-borates, tris-odium zinc cadmium penta-borate, Na3Zn0.912Cd0.088B5O10, and tris-odium zinc magnesium penta-borate, Na3Zn0.845Mg0.155B5O10, have been synthesized by high-temperature solution reactions at 1023 K. Their crystal structures were determined by single-crystal X-ray diffraction. Both solid solutions crystallize in the ortho-rhom-bic form of the parent compound Na3ZnB5O10 ...

These days, regular students’ behaviors still reflect a low acceptance of students with special educational needs (SEN). Previous studies have revealed that the crucial factors to examine are knowledge about disabilities and attitudes. This study aims determine extent which these two contribute their SEN. quantitative research was conducted on 1248 participants from 14 public junior high school...