مؤلف: Lewis C. Sawyer

The U.S. prison system has exploded in size and economic importance during the past three decades, due to a variety of factors including mandatory sentencing laws and tougher drug enforcement efforts …

As a biopolymer, lignin is unusual because of its heterogeneity and lack of a defined primary structure. Its most commonly noted function is the support through strengthening of wood (xylem cells) in …