Volatilization of ammonia (NH3) from animal manure is a major pathway for nitrogen (N) losses that cause eutrophication, acidification, and other environmental hazards. In this study, the effect of alternative techniques of manure treatment (aeration, separation, addition of peat) and application (broadcast spreading, band spreading, injection, incorporation by harrowing) on NH3 emissions in th...

Although large quantities of heavy metal laden wastes are released in an uncontrolled manner by gold mining activities with ensuing contamination of the surrounding areas, there is scant information on the mycobiota of gold-mine sites. Thus, the present study was aimed to describe the fungal community structure in three differently As- and Hg-polluted soils collected from the Pestarena decommis...

Boll weevil, Anthonomus grandis grandis Boheman (Coleoptera: Curculionidae), trapping and pheromone quantitative analysis of extended-life pheromone lures manufactured with 0, 10, 20, and 30 mg of eugenol was conducted in the Rio Grande Valley of Texas under spring and summer conditions. Boll weevils responded positively to eugenol on one of 12 trapping weeks when densities were high, but when ...

Fluoride-containing bioactive glasses and glass-ceramics in the SiO2-P2O5-CaO-CaF2 system are of great interest for dental applications, where precipitation fluorapatite supports tooth remineralization. Fluorine quantification those is key to estimate thermal properties crystallization tendency. This work presents a study on fluorine determination by laser induced breakdown spectroscopy (LIBS) ...

Selenium contamination of soil in the San Joaquin Valley, California poses a threat to wildlife and to agricultural productivity. Traditional phytoremediation methods use the process of phytoextraction to remove selenium from soil by sequestering selenium in plant tissues, potentially allowing the re-release of selenium to the soil if the plants are not harvested after senescence. The volatiliz...

Soil sorption and dissipation of fluometuron (FLM) and three metabolites, desmethyl fluometuron (DMF), trifluoromethyl phenyl urea (TFMPU), and trifluoromethyl aniline (TFMA), were assessed in conservation tillage soils. In study I, surface Dundee silt loam soils from no-tillage (NT) and reduced-tillage (RT) areas were treated with 14C ring-labeled FLM or TFMA or unlabeled DMF, incubated for 34...

ZnGa2O4 is a promising semiconductor for developing high-performance deep-ultraviolet photodetectors owing to number of advantageous fundamental characteristics. However, Zn volatilization during the growth widely recognized problem that seriously degrades film quality and device performance. In this study, we report synthesis epitaxial thin films by pulsed laser deposition using non-stoichiome...