The objectives of this study were: to evaluate the leaching potential B in a Latossolo Vermelho-Amarelo (Oxisol) as function sources and doses micronutrient; among tested (boric acid, ulexite commercial source H2 Boro), determine one with lowest potential; losses at different each soil layer evaluated; identify chemical physical variables soils that influence leaching. For that, two experiments...

Borate is an essential material to numerous industries and even individual countries’ economies, defense, politics. Almost all need borates for production, almost everybody needs their products. a compound that contains or supplies boric oxide (B2O3). Among the minerals contain oxide, there are only four significant from economic standpoint, namely borax (tincal), colemanite, ulexite, kernite. ...

Recently, the twin-pipe pumping (TPP) system has been developed for 3D concrete printing which involves two mixtures, typically a Portland cement-based mixture and pure limestone powder-based that contains an accelerator. Following this, mixtures are allowed to be intermixed in static mixer placed just prior nozzle causes immediate stiffening very high buildability printed post-extrusion. Howev...

Evidence for an “RNA world,” an episode of life on Earth during which RNA was the only genetically encoded component of biological catalysts, is found in the ribosome (1), catalytic RNA molecules (2), and contemporary metabolism (3). That RNA could form spontaneously and persist under prebiotic conditions has been doubted, however (4, 5). Ribose and its sister pentoses (arabinose, xylose, and l...

As technological demand for materials with specific physical properties has increased, the importance of strategic metals cannot be ignored. Strategic metals are those materials that have high economic value, are used in a variety of applications, and have few or no viable substitutions; supply may face the risk of restriction due to various technical, economic, or social factors. Mainly due to...