Problems of self-interaction arise in both classical and quantum field theories. To understand how such problems are to be addressed a theory the Dirac electromagnetic fields (quantum electrodynamics), we can start by analyzing these fields. In theory, electron has spread-out distribution charge that avoids some facing point models. However, there remains problem will experience self-repulsion....

Six different composite packaging materials were tested with the trades’ practice of polythene bags in storing smoked catfish for a period of six months. The thickness of the packaging materials ranges from 0.23 to 046 mm with water and oil absorption rates of the packaging materials varies from 0.23 to 10.00 and 0.28 to 10.857 glcm2/mm respectively. The impact resistance weight also varies fro...

water plays a vital role in the development of activities in an area. the surface water resources are inadequate to fulfill the water demand. productivity through groundwater is quite high as compared to surface water, but groundwater resources have not yet been properly exploited. keeping this view, the present study attempts to select and delineate various groundwater potential zones for the ...