In paper production, a jumbo reel is cut into multiple intermediate rolls, and each intermediate roll is then sheeted as finished goods.This problem is called a cutting stock problem and is proven to be NP-hard.The objective is to minimize material waste or trim loss from all the cuttings.In the case that any intermediate roll is not entirely used
The C-Test as a tool for assessing language competence has been in existence for nearly 40 years, having been designed by Professors Klein-Braley and Raatz for implementation in German Nutritional Supplements and English.Much research has been conducted over the ensuing years, particularly in regards to reliability and construct validity, for which
As a metal sign newly emerging organ transplantation technique, islet transplantation has shown the advantages of minimal trauma and high safety since it was first carried out.The proposal of the Edmonton protocol, which has been widely applied, was a breakthrough in this method.However, direct contact between islets and portal vein blood will caus
Abstract Background Hepatitis B virus (HBV) infection is a major public health problem worldwide.More than 2 billion people have been exposed to HBV, and about 257 million individuals are chronic carriers of HBV.HBV reactivation has been increasingly reported in HBV carriers who have undergone immunosuppression or chemotherapy, resulting in mortali
The high mercury (Hg) content in tailings from artisanal gold mining areas requires efforts to reduce or overcome the effects of contaminants through remediation.A widely used bioremediation technique in developing countries is phytoremediation because it is considered efficient and can be applied in the long term.Phytoremediation can run more effe