We present optical observations of a ULX in the nearby spiral galaxy IC 342. This variable source has an average X-ray luminosity of some 10 40 erg/s. At the position of the source there is an ionized nebula (the " Tooth ") having huge dimensions (280 x 130 pc), much larger than normal supernova remnants. Our optical spectra reveal highly supersonic expansion velocities and emission line ratios...

The purpose of this paper is to manage the crisis caused by nano-technology in the petrochemical industry (Emam port). The collection of information contained in the petrochemical industry On the application of nanoparticles and the problems created by preparing questionnaires and to provide it on two levels: Managers and technical experts then analyze it done And also to study the biological e...

The rising global demand for palm oil and its associated products has led to increased numbers of palm oil refineries with its attendant effluent discharge. Many researches have confirmed the ecological disruptive potentiality of Palm Oil Mill Effluent (POME), still further attention has to be directed at POME’s potential genotoxicity. The present study has made physico-chemical and genotoxicit...

clinical learning occurs in the context of a dynamic environment. learning environment found to be one of the most important factors in determining the success of an effective teaching program. to investigate, from the attending and resident's perspective, factors that may affect student leaning in the educational hospital setting at shiraz university of medical sciences (sums). this study comb...

macroeconomic stabilitv is a major prerequisite fo r real economic growth. in th is study in order to allalyse tile empirical relation ship between macroeconomic instability and per capita real growth, a regression model has been specifi ed for tile iranian economy . in this equation , lour variables including hudget deficit as a ratio to gdp. intlation rate , percenltlge change in tile rea! ex...