The inhibition of corrosion of ZA-27 alloy in 1M hydrochloric acid and 1M sulphuric acid by synthesized mercapto oxadiazoles was studied using weight loss method. Results obtained revealed that the synthesized compounds are efficient inhibitors. Generally inhibition efficiency increases with increasing inhibitor concentration and decreasing temperature. The synergistic effect of halide ions on the inhibition of oxadiazoles was also investigated.
A simple and reliable liquid chromatographic method has been developed for the determination of tramadol HCl in the pharmaceutical preparation and biological fluids. The fluorescence of the product was found to have excitation at lmax 272 nm and emission at lmax 298 nm. The method shows high sensitivity with linearity range from 0.07 to 0.4 µg/ml. The lower limit of detection (LOD) was found to be 1.63 x 10-2 µg/ml, 4.79 x 10-1 µg/ml and limit of quantification (LOQ) was found to be 4.95 x 10-2 µg/ml, 1.45x 10-2 µg/ml in formulation and biological fluids respectively. The different experimental parameters affecting the fluorescence intensity were carefully studied and optimized. The proposed method was applied successfully for determination of tramadol in the pharmaceutical preparation and biological fluids. The percentage recovery was found to be 101.3347 ±0.7991; 101.196 ± 1.382 for formulation and biological fluids respectively. |
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A new series of mixed ligand hexa coordinated ruthenium(III) Schiff base complexes of the type [RuX2(B)(L)] (B = PPh3 or AsPh3, X= Cl or Br; L= monobasic tridentate Schiff base derived from the condensation of salicylidinephenylene diamine with acetone, acetaldehyde, benzaldehyde) All the complexes have been exhibited to antibacterial study. |
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A series of substituted 1, 3, 4-thiadiazoles (3a-w) were prepared by oxidative cyclization of aryl substituted thiosemicarbazones. Synthesized compounds were identified on the basis of their spectral data. The compounds 3a, 3e, 3m, 3n, 3o, 3p and 3v showed more lipophilic character and moderate protection in MES test whereas compounds 3d and 3e were also lipophilic and less active. Some of the compounds have shown up to 83 % protection and obviously may have very good future commitment.
1-Substituted tetrazoline-5-thiones (LH) interact with their thiol tautomeric form with As (v) forming compounds having formula [AsL5] (LH = 1-Substituted tetrazoline -5- thiones). All compounds were monomeric, non-electrolyte having preferential triangular bipyramidal configuration. The four characteristic thiomide bands of the ligand have been used as diagnostic for arsenic - ligand bonding. The 1H NMR Spectra is carried out and interpreted.
The corrosion of zinc in nitric acid containing toluidines has been studied at different acid concentration, inhibitor concentration and temperature. In acid, corrosion increases with concentration of acid and with temperature. At constant acid concentration, the inhibition efficiency (I.E.) of toluidines increases with concentration. At constant inhibitor concentration, the I.E. increases with the concentration of acid. At 40 mM inhibitor concentration in 0.15 M HNO3 acid at 301 K for 24 h immersion period, the I.E. decrease in the order : |
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Waste which is generated during the medical research work, production and testing of biological diagnosis, treatment or immunization of human being and animals termed as "hospital waste" Improper handling and management of Hospital waste can spread infection and pollute air, water and soil. When infections hospital waste mixed with general non infections waste or municipal waste it makes the whole waste infectious Improper treatment of infectious hospital waste can also spread infection and communicable diseases among the hospital employees, patients municipal workers and general public. Hospital waste can also cause diseases like AIDS, hepatitis B & C, skin infection etc. Reuse of disposable items, needles, catheters, IV-sets and dialysis sets is also a major problem which must be solved within time. So it is important to adopt proper scientific methods of waste handling, management and its safe disposal or recycling. The present paper discussing the problem of hospital waste management in Bhopal city and management strategy to be adopted to solve this problem.
Cobalt-chromium-HAP (hyroxyapatite) biomaterial system was developed by powder metallurgy technique. Composition of 0 wt. %, 5 wt. %, 10 wt. %, 15 wt. % and 20 wt. % of HAP was blended with cobalt-chromium alloy. The method in fabrication of the samples consists of mixing, blending, pressing and sintering of the samples. The results showed that the most stable sample with less corrosion effect was the Co-Cr alloys without HAP. In general, the corrosion rate growths relatively with the times. In addition, the effect of adding HAP made the samples getting worse, which help the corrosion to grow in the biomaterial system developed.
Liquid-liquid extraction one of the most cost effective methods used for separating acetic acid from its aqueous solution.In the present work,extraction of acetic acid is studied using single and mixed solvent systems. The various mixed solvents studied were ethyl acetate+isopropanol, butyl acetate+n-tri-butyl phosphate, ethyl acetate + cyclohexane, hexanol + butyl acetate, hexanol + iso propanol. The results obtained show that high synergisms were obtained for mixed solvents than that for single solvent. |
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Measurement of NO2 in different indoor hostels environments was carried out. Crowcon portable Gasman automatic monitor was used for the monitoring. The highest NO2 concentration of 0.267ppm was obtained in hostels 4 and 8 while the lowest concentration of 0.133 was obtained in a first floor room in hostel 5. The FEPA limit of 0.016ppm for NO2 was exceeded in all the locations sampled in this study. Levels obtained in this study therefore suggest the need for urgent intervention. However, the outdoor concentration of NO2 around the hotels was almost the same as that obtained indoors. This suggests high penetration of indoors of outdoor NO2. |
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