Earth is home to some truly bizarre and breathtaking landscapes — here are 20 that look straight out of an alien world.

In the present study, tests of alkaline and acidic pressure oxidation followed by sodium cyanide ... The acid oxidation temperature should be above 175°C to prevent the formation of elemental sulfur, ...

Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Departamento de Engenharia e Tecnologia Florestal, Universidade Federal do Paraná, 632 Pref. Lothario Meissner Avenue, Curitiba 80210-170, ...

Discussion: Our study links weathering characteristics with chemical properties and bacterial community changes of weathered products ... Available phosphorus (AP) was determined via the sodium ...

This week, the titanium dioxide market prices have generally shown a relatively stable trend. Currently, the quoted price for sulphuric acid process rutile titanium dioxide is... This week, the ...