Recent Improvement of Ozone-Layer Study by ILAS Observations

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

Ozone observations by GAMS during SOLVE II

Ozone observations by the Gas and Aerosol Measurement Sensor during SOLVE II M. C. Pitts, L. W. Thomason, J. M. Zawodny, B. N. Wenny, J. M. Livingston, P. B. Russell, J.-H. Yee, W. H. Swartz, and R. E. Shetter NASA Langley Research Center, Hampton, Virginia, USA Science Applications International Corporation, Hampton, Virginia, USA SRI International, Menlo Park, California, USA NASA Ames Resear...

Ozone Layer Depletion

Study of tropospheric ozone concentration trend of Kermanshah by meteorological parameter and ozone precursor and OMI images

Abstract: Clean air is a necessity for human well-being and health. Air pollution is a major threat to humans and other organisms and is considered as one of the environmental challenges. Today, with the increase in air pollution, the need to know more about the causes of its occurrence has been raised. The various consequences of air pollution have made air quality monitoring and control inev...

a study on insurer solvency by panel data model: the case of iranian insurance market

the aim of this thesis is an approach for assessing insurer’s solvency for iranian insurance companies. we use of economic data with both time series and cross-sectional variation, thus by using the panel data model will survey the insurer solvency.