Resumo Um tratamento para as espécies de Euphorbiaceae ocorrentes nas cangas da Serra dos Carajás, Pará, Brasil, é apresentado.O estudo foi baseado em análise das exsicatas depositadas nos herbários regionais e nacionais, bem como em observações feitas em campo.Foram registradas onze espécies e uma subespécie, incluídas nos Hayward C-Spa
Several methodologies have been developed to manage diesel in open-cast mining due to its high demand and increasing diesel prices.Although the use of diesel-powered equipment in underground mines has increased over the years, effective management thereof has not received the same attention.With the advent of Industry 4.0, data can be utilised more
This study uses Norwegian public register data in a spatial correlation approach, and analyzes associations between regional variations in immigration and employment outcomes 2004–2015 in a cohort of adult residents (N = 1.3 million).A higher share of immigrants in the regional population and an immigrant population dominated by low-educated were
A type of two-degree-of-freedom vibration system with bilateral nonlinear constraints is established.Through the fourth-order Runge-Kutta numerical algorithm, the dynamic characteristics of axe the p/1 periodic motion of the system under low frequency excitation, the law of mutual transition and the corresponding law of the coexistence zone of gap