Some new Schiff bases, (Z)-4-amino-3-((E)-(R-methoxybenzylidene) hydrazono)-6-methyl-3,4-dihydro-1, 2, 4-triazin-5 (2H)-one (R=2 (L2), R=3 (L3) and R=4 (L4)), were synthesized by the condensation reactions of 4-amino-3-hydrazinyl-6-methyl-1,2,4-triazin-5(4H)-one (L1) and corresponding methoxybenzaldehyde in a molar ratio 1:1.5 in high yields. The reaction of L2 and L4 with an excess amount of the corresponding aldehydes gave the unsymmetrical bis-Schiff bases (E)-3-((E)-(R-methoxybenzylidene)hydrazono)-4-((E)-R-methoxybenzylideneamino)-6-methyl-3,4-dihydro-1,2,4-triazin-5(2H)-one (R=2 (L22) and R=4 (L44)), respectively. Furthermore, the reaction of L2–L4 with Silver(I) nitrate in a molar ratio 2:1 led to the Silver(I)-complexes with the general formula [Ag(Lx)2]NO3 (Lx=L2 (2), L3 (3) and L4 (4)). All synthesized Schiff base compounds and complexes were characterized by a combination of IR-, 1H-NMR spectroscopy, mass spectrometry and elemental analyses. In addition, the structures of L2, L4.CH3CN, L22.CH3OH and L44.CH3OH and complexes 2 and 4 were determined by X-ray diffraction studies.

Introduction: According to association of daytime symptoms, nocturnal enuresis is divided into 2subgroups: mono-symptomatic (MNE) and nonmono symptomatic (NMNE) forms.This study was conducted to review clinical and ultrasonography findings in different subtypes of enuresis and compare organic and functional pathologies of lower urinary tract in children with MNE with those who have NMNE.Methods: During 3-year period neurologically normal children with enuresis who referred nephrology clinic were enrolled study. Urinalysis, urine culture, and ultrasonography were done forall. Voiding CystoUreteroGraphy (VCUG) was used to evaluate anatomy of lower urinary tract and Urodynamic Studies (UDS) were done to assess bladder function.Results: Hundred and eleven children enrolled study (60 boys and 51 girls). Forty-three (38.8%) with MNE and 68 (61.2%) with NMNE, aged 5 to 17 years. Constipation, encopresis, and urge incontinence were significantly more frequent in patients with NMNE + daytime incontinence (P<.05). Increased of bladder wall thickness and irregularity of bladder wall were the most common findings (P>.05). One patient with MNE and 9 with NMNE + daytime incontinence had vesicoureteral reflux (P=.02). Evidences of bladder dysfunction were noted in about half of patients who underwent UDS, with higher prevalence in cases with NMNE +daytime urinary incontinence (P>.05).Conclusions: Bowel symptoms and urological abnormalities of lower urinary tract are significantly more prevalent in cases with NMNE who have daytime incontinence. We recommend VCUG in patients with NMNE who have daytime incontinence.

In this paper, we investigated the corrected plasmon dispersion relation for graphene in presence of a constant magnetic field which it includes a quantum term arising from the collective electron density wave interference effects. By using quantum hydrodynamic plasma model which incorporates the important quantum statistical pressure and electron diffraction force, the longitudinal plasmons are the electrostatic collective excitations of the solid electron gas. It shows the importance of quantum term from the collective electron density wave interference effects. By plotting the dispersion relation derived, it has been found that dispersion relation of surface modes depends significantly on Bohm’s potential and statistical terms and it should be taken into account in the case of magnetized or unmagnetized plasma; we have noticed successful description of the quantum hydrodynamic model. So, the quantum corrected hydrodynamic model can effectively describe the Plasmon dispersion spectrum in degenerate plasmas, since it takes into account the full picture of collective electron-wave interference via the quantum Bohm’s potential. By plotting the dispersion relation, the behavior of different wave types was predicted. It was found that one of them should not be propagated to the specific wave number. By drawing of contour curve of these modes, the areas that modes can be propagated were obtained.

Organophosphorous compounds are important neuroactive molecules whose presents significant analytical challenges. New monoenzyme biosensor introduced here, is used for the measurement of the level of two organophosphorous compounds, paraoxon (POX) and ethyl parathion (EPA), in phosphate buffer. Prussian blue electrodepositionized on a graphite electrode served as a template for immobilization of monoenzyme layer. A monoenzyme layer containing choline oxidase was immobilized along with nafion and bovine serum albumin, by cross-linking with glutaraldehyde. The results revealed that the response of the proposed biosensor was linear between 5 µM and 80 µM in the presence of POX and EPA. Detection limits were 0.4 µM in both cases. Also, for the optimization of the biosensor performance, temperature and pH dependency, concentration of choline chloride as substrate of choline oxidase and incubation time were determined. The results showed that the optimum values for temperature, pH, substrate concentration and incubation time were room temperature, pH 7, 4 mM and 30 min, respectively.