This study measures the cost of organic milk production, and in particular, the differences in cost of production between organic and conventional milk in California.Results show that the total cost of production on a per cow and a per hundredweight basis is about 10% higher for organic producers than for conventional producers in the surveyed regi
The adhesion work and force of the five types of asphalt to andesite were measured using surface energy and pull-out tests, respectively.Various tests were operated to estimate the high and low-temperature characteristics of the five types of asphalt mixtures: high-temperature rutting, low-temperature bending, indirect tensile creep, Pipe Beveling
Introduction: Relationships between equals are a topic of great importance, especially during adolescence.The objective of this text is to identify reasons why adolescents are accepted and rejected in high school classrooms.Method: The sample was made up of 645 students belonging to 20 school groups from 10 educational institutions in Havana, durin