Introduction: Disposal of the wastewater produced in the paper and paperboard industry without the refining process can add substances to the environment, which are harmful to humans, environment, and other organisms. With regard to process efficiency, the current methods used in wastewater treatment of this industry are economically unjustifiable. Therefore, in this research, the electrolysis ...

The authors examine industry concentration for the U.S. food manufacturing sector. This study is the first to examine whether particular subsectors within the food manufacturing industry, which operate in the presence of industry-funded check-off programs such as marketing orders, are more or less concentrated than industries without such research and marketing programs. The authors find eviden...

Spatial concentration of economic activity is a phenomenon that has important implications for the development potential local, regional and national economy. This statement stems from two facts: first, there tendency people to concentrate in major cities regions; second, similar connected companies sometimes agglomerate together at particular location take advantages external economies. paper ...