Directional ionogram and F-region drift observations were conducted at seven digisonde stations in South America during the COPEX campaign from October to December 2002.Five stations in Brazil, one in Argentina, and one in Peru, monitored the ionosphere across the continent to study the onset and development of F-region density depletions that caus
Hypothesis: The change in the wetting of rock from hydrophobic to hydrophilic is named "wettability alteration".This is an important factor for enhanced oil recovery (EOR).Because of their unique properties, nanoparticles have attracted much attention Crochet Flowers for enhanced oil recovery.Despite promising results, the main challenges of using
Context: Despite the advances in orthodontic material and treatment mechanics, the placement of fixed appliances increases the risk of enamel demineralization.The development of fluoride release adhesives has attracted considerable interests because the combined use of antimicrobials and fluoride enhances the cariostatic effect.Aim: To compare the
Ikan hiu adalah jenis ikan bertulang rawan 3 Piece Full Bookcase Bed (Elasmobranchii) yang berperan sebagai predator puncak dalam rantai makanan dan juga memiliki peranan penting dalam menjaga keseimbangan ekosistem di lautan.Saat ini, keberadaan hiu terancam punah akibat aktivitas penangkapan berlebih yang disebabkan meningkatnya permintaan komodi