Canola producers in the Province of Qazvin were surveyed in order to explore their perceptionabout technical skills influencing the production of canola. Based on the perception ofrespondents, the results showed that the contact with agricultural service centers would encouragefarmers to produce canola. The results showed that there were relationship between perception ofrespondents about canol...

background: despite the positive impact of cardiac rehabilitation (cr) on quality of life and mortality, the majority of people who could benefit from this program fail to participate in it. the lack of referral from the physician is a common reason that patients give for not seeking cr. the objective of this study was to compare factors affecting cr referral by cardiologists. methods: a cross-...

Using a center of gravity model and GIS software, we measured how China’s energy production and consumption centers changed (positions, movements, distances, and rates) from 1997 to 2009, thereby revealing regional differences in the relationship between supply and demand. We found that the centers of gravity for raw coal consumption, crude oil production and consumption, and electricity produc...