Sheep anti-Bovine Factor V antibody, clone N/A

Implementation of Schiff base metal complex/SiO2 nanocomposite as a multifunctional modifier in steel epoxy coating represents a novel engineering issue for surface treatment technology. The present work investigates the application of epoxy coating modified with several metal (Co(II), Zr(IV), Cu(II) and Cr(III)) complexes of Schiff base versatile ligand namely p-Phenylamine-N(4-chloro salicylaldenemine) (HL), composited with SiO2 nanoparticles to enhance its protective behavior and mechanical resistance on the C-steel surface. Characterizations of silica nanoparticles were demonstrated by using transmission electron microscope (TEM), scanning electron microscope (SEM), energy dispersive of X-rays (EDX) and X-ray diffraction analysis for integral clarification. FT-IR discriminatory spectra for polyamine cured blank unmodified conventional epoxy and surface modified HL and its metal complexes epoxy/SiO2 hybrid nanocomposite cured coatings were checked. The protective behavior of the investigated modified epoxy nanocomposite coatings against unmodified blank conventional epoxy on the steel surface was clarified by studying the surface morphology of the cured coated films after the immediate exposition to corrosive salt spray cabinet for 500 h and employing 5% NaCl aggressive solution. Modified cured QM and Ni(II) complex epoxy/SiO2 nanocomposite coated films (NS/MCE-F3 and NS/MCE-F5) manifested the minimum corrosion rate (CR) at 0.00063 mm/y and a superb protection efficiency (PE) recorded at 99.80%. The mechanical resistance properties of the nanocomposite coatings were examined by adhesion cross-cut, bend, impact, and abrasion (film stiffness) coating tests to underline their enforcement efficiency. NS/MCE-F3 and NS/MCE-F5 coated films boosted an outstanding mechanical resistance behavior on the C-steel surface in contrast with complete deterioration for blank conventional epoxy. The main reason for the superior anti-corrosion and mechanical performance properties observed in case of the nanocomposite coatings modified with Cr(III) and Ni(II) complexes may be attributed to the higher magnetic dipole moment of these complexes than the others in which enhances their electronegativity, cross-linking density and chemical bonding with the steel surface via the donor-acceptor interactions.

Neonatal domestic South American Camelid llamas and alpacas suffer from an enteric disease complex characterized by abdominal distention, lethargy, dehydration, and eventual fatal septicemia. Analysis of rectal swabs from neonatal alpacas suffering clinical diarrheas has constantly isolatedEscherichia coli, mainly the EPEC and EHEC pathotypes. The present communication reports the results of molecular analysis of 226E. colistrains from neonatal alpaca rectal swabs. The isolates were initially tested by multiple PCR, to identifyE. colivirulence geneseae,bfp,Lt,Stx1,Stx2,sta,stab, andltgenes and a similar test to detect F4, F5, F6, F17, and F41fimbriae adhesin genes. Forty-two of the 226 (18.5%) isolates tested positive for at least one pathogenic gene, 25 of the 42 were classified as EPEC (3 positives for onlyeaeand 22 for botheaeandbfp) and the remaining 17 were classified as EHEC. Twenty-four (57%) of the 42 isolates tested positive to F17 adhesin while one was positive for both F6 and F17.