A serial enrichment culture has been grown in an alkaline Fe(III)-citrate-containing medium from an initial inoculum from a soil layer beneath a chromium ore processing residue (COPR) disposal site where Cr(III) is accumulating from Cr(VI) containing leachate. This culture is dominated by two bacterial genera in the order Clostridiales, Tissierella, and an unnamed Clostridium XI subgroup. This ...

A study on behaviour of trace organic compounds (Polycyclic Aromatic Hydrocarbons, PAH, and Polychlorinated Biphenyls, PCB) in a sand-plant system has been carried out, with the reclamation of wastewater treatment plant biosolids for agriculture in mind. Carrot plants (Daucus carota) were grown on soilless culture (sand), to provide optimal transfer conditions, in plant containers inside a temp...

A simple column filtration was developed to clarify meat homogenate suitable enough to quantify and assess the viability of bacterial population using flow cytometry. The removal of debris from homogenized meat suspensions was achieved by passing through different column materials such as sand particles, glass beads, dowex resin, and cell debris remover (CDR). Total plate counts on tryptic soy ...

BACKGROUND Phlebotomine sand flies are vectors of Leishmania parasites. During blood feeding, sand flies deposit into the host skin immunogenic salivary proteins which elicit specific antibody responses. These anti-saliva antibodies enable an estimate of the host exposure to sand flies and, in leishmaniasis endemic areas, also the risk for Leishmania infections. However, the use of whole saliva...

Differentiation of extracellular Leishmania promastigotes within their sand fly vector, termed metacyclogenesis, is considered to be essential for parasites to regain mammalian host infectivity. Metacyclogenesis is accompanied by changes in the local parasite environment, including secretion of complex glycoconjugates within the promastigote secretory gel and colonization and degradation of the...

The ability of indigenous rhizobia to nodulate a legume crop effectively was critical to successful establishment and growth of legumes. This study was aimed to evaluate the symbiotic effectiveness along with growth responses to varied conditionslike pH, salt, temperature, antibiotics, and carbon and nitrogen sourcesfor rhizobial isolates nodulating faba bean from Tahtay Koraro, northwestern Zo...