Relative agronomic efficiency (RAE) of phosphorus (P) in nutrient-rich residues with different chemical characteristics must be known order to optimize their use as fertilizers, avoid underfertilization crops or eutrophication surface waters due overfertilization. In this study, we determined the and RAE manures (cattle, pig, fox) sewage sludges subjected treatments (anaerobic digestion, compos...

Novel double-shelled hierarchical ferrihydrite hollow spheres (Fe(10)O(14)(OH)(2).4H(2)O) were successfully synthesized on a large scale by using a facile medicine-inspired solution-phase approach. Sodium nitroprusside (SNP), an ordinary and inexpensive medicine for expanding blood vessels, served as both a ferric source and an in situ formed gas-bubble template with the presence of sodium dihy...

A carboxymethyl cellulase gene, cel5B, was cloned, sequenced, and expressed in Escherichia coli. pRCS20 in E. coli was identified from metagenomic cosmid library of cow rumen for cellulase activity on a carboxymethyl cellulose agar plates. Cosmid clone (RCS20) was partially digested with Sau3AI, ligated into BamHI site of pBluescript II SK+ vector, and transformed into E. coli DH5α. The insert ...

This study measured depelted-carcass residues of zinc phosphide (Zn,P,, CAS # 1314-84-7) in 8 (43 and 49) gray-tailed voles (Microtus canicaudus). Six (3$ 39) voles were confined individually in 1.89 dkl(5 gal) plastic pails that contained 5,2% Zn,P2 steamrolled-oat (SRO) groats; 2 voles ( Id and 19) served as analytical (unbaited) controls. Four test voles (3-3 19) died within 7.5 h after bait...

Proteases are a varied and ancient family of enzymes that play part in every aspect an organism's functioning. As member the hydrolytic enzyme family, they help break down proteins into smaller peptides amino acids. carry out nucleophilic attack on carbonyl carbon scissile bond to facilitate addition water. Because wide range variances their characteristics, such as substrate selectivity, activ...