Synthesis, characterization and antimicrobial activities of mixed ligand metal complexes of N-Phenyl dithiocarbamate with schiff base of Mn(II), Fe(II), and Pb(II),Co(II),Ni (II),Cu (II),Zn(II) and Cd (II) metal ions were carried out in this study. The ligands and their respective metal complexes were characterized by FTIR, UV spectroscopy, and elemental analysis. The data from the elemental analysis suggest a good agreement between the calculated and the experimental values for the elements viz; C, H, N and S. Also, the UV-Visible and FTIR spectroscopic data revealed that the metal complexes coordinate through the nitrogen and oxygen atoms of the alanine Schiff base and via the two sulphur atoms of the N-Phenyl dithiocarbamate ligands which serve as bidentate sites for the ligand.The antimicrobial l studies revealed that the synthesized ligands and their metal complexes recorded strong potency against the pathogens being investigated, suggesting that they could serve as good antimicrobial agents against the selected pathogens.

Investigation has been done concerning Kaolin based alumina prepared by acid leaching method. This was initially fired at 600? for 4 hours to increase its reactivity. For better yield Hydrochloric Acid ( HCl) was used for the digestion as against the conventional Sulphuric acid (H2SO4). The gelatinous precipitate of the hydrated alumina was further filtered under vacuum 400°C for 2h, which resulted the formation of ?-alumina. The structure of ?-alumina was confirmed by XRD and its corresponding diffractogram parameters and SEM and the mean particles size of ?-alumina was determined by SEM to be 3 - 9 µm.. Foamy agglomerates at low magnification and the presence of larger voids in theirs structures at high magnification were visible from the SEM images. The study revealed that kaolin could be promising material for preparation of ?-alumina

The present work demonstrates easy and effective synthesis methodology for synthesis of bisindole derivatives in presence of protic organic acid 2-morpholino ethanesulphonic acid (MESA). 2-MESA is water soluble catalyst easy to extract and work-up for the synthesis of bisindole class of compounds. Catalyst is recovered and recycled by simple evaporation of water. Efficient aromatic electrophilic substitution of indoles (2 mmol) with aromatic aldehydes (1 mmol) equipped with various constituents were carried out employing a catalytic amount in ethanol to obtain bisindoles in good to excellent yields.

The present work demonstrates easy and effective synthesis methodology for synthesis of bisindole derivatives in presence of protic organic acid 2-morpholino ethanesulphonic acid (MESA). 2-MESA is water soluble catalyst easy to extract and work-up for the synthesis of bisindole class of compounds. Catalyst is recovered and recycled by simple evaporation of water. Efficient aromatic electrophilic substitution of indoles (2 mmol) with aromatic aldehydes (1 mmol) equipped with various constituents were carried out employing a catalytic amount in ethanol to obtain bisindoles in good to excellent yields.

It is the process of prevention of corrosion of mild steel from vapors emitted by packing woods. It was observed that the passive film on mild steel surface has been presented. The passive film is stabilized by continued exposure to the passivating environment The vapor of anthrocene and naphthalene some other related substances are deposited over the surface of mild steel .This is vapours phase process damage of various electronic equipments due to corrosion small assemblies and big boilers are corroded coating is affected but a very small range big range of protection is only vapour phase process like diposition of plasma material at the surface of mild steel these are vapour emitting substance reach where coating is not possible plasma pulse are important in growth of thin film over the surface.

The present study is aimed at exploring singlet oxygen quenching ability of methanolic extract of green tea in methylene-blue sensitized photo-oxidation of olive and melon seed oils. Purified and oven-dried samples of melon seed oil and Goya brand olive oil as obtained from the manufacturer were used for the study. In this research, the effects of methanolic extracts of green tea as an antioxidant on the oxidative stability of olive and melon seeds oils were studied. The oil samples were subjected to methylene blue sensitized photoxidation in 10% methanol in dichloromethane for a duration of 10 hours with and without added green tea extract. The oxidized oil samples were analyzed for the following parameters: peroxide value, iodine value and % free fatty acid value. The results of the study suggest that green tea extract exhibit singlet oxygen quenching ability under sensitized photoxidation, which is dose dependent for both oils under the experimental conditions.

Knoevenagel condensation of 2-acetylthiophene and 4-methoxybenzaldehyde in the presence of potassium hydroxide in methyl alcohol at room temperature afforded (E)-3-(4-methoxyphenyl)-1-(thiophen-2-yl) prop-2-en-1-one. The synthesised compound was characterized by 1H NMR, Mass spectral and X-ray diffraction studies. The title molecule (E)-3-(4-methoxyphenyl)-1-(thiophen-2-yl) prop-2-en-1-one is crystallized in the monoclinic crystal system with the space group P21. The unit cell axes along a, b and c measure 4.149 (6) Å, 10.038 (1) Å and 14.552 (2) Å respectively and the angle between axis a and c was 91.9 (2)°. The number of formula units Z in the unit cell was 2. The crystal and molecular structure of the title compound is stabilized by C—H •••O hydrogen bond interactions. The Hirshfeld surface analysis was carried out to make it evident the presence of C—H •••O hydrogen bond interactions and to find the contributions of various inter molecular close contacts which stabilize the crystal lattice structure.

The measurement of the radioactive iodine uptake (RAIU) provides the most direct study of thyroid physiology by studying the rate of thyroidal accumulation, incorporation, and release of radioiodine. A total 69 subjects with a mean age of 34±13 years (range: 8-70 years) that include 70% females and 30% males, referred to the Institute of Nuclear Medicine & Allied Sciences (INMS), Rajshahi for RAIU measurement were evaluated to investigate their thyroid physiology. The uptake study consisted of oral administration of 3.7–7.4 MBq (100–200 µCi) of 131I as sodium-iodide was performed both at 2 hours and 24 hours. The Mean±SD of RAIU values for euthyroidism, hypothyroidism and hyperthyroidism were found to be 6.3±3.4% at 2h and 9.9±6.8% at 24h, 1.8±0.8% at 2h and 4.2±2.6% at 24h, and 36.5±21.4% at 2h and 54.8±15.9% at 24h, respectively. The RAIU measured in the present study effectively indicate the status of the respective thyroid.

This research aimed to estimate the uptake trace metals (TMs) by the algae species which grow inside contaminated water in streams originating from some industrial areas in Omudrman city in Sudan. It also aimed to verify the possibility of making use of this phenomenon in bioremediation of environmental pollution. The flame atomic absorption spectrophotometry was used to evaluate the concentration of the selectedt metals in waste water and algal biomass of the phyla Chlorophyta, Cyanophyta, Euglnophyta and Bacillariophyta. The TMs studied in waste water and algal biomass were Fe, Zn, Cd, Pb, Cu, Ni, and Cr. The physical parameters studied were pH and electrical conductivity (EC) of waste water. The study covered during dry and rainy seasons 5 sites in Omdurman industrial area. Samples were collected, and digested in conc. acids mixture of 3:1 of HNO3 and HClO4 and analyzed for trace metals concentrations. The algal biomass was found to be more efficient for TMs uptake and accumulation. The phytoremediation by the mentioned algal biomass is a promising technique for the removing the TMs considered in the present study.

A type of expendable graphite (EGFe) modified by ferric hydroxide was stepwise prepared through chemical oxidation and hydrolysis precipitation reaction. Its dilatability, crystal structure, main functional groups were all characterized. The synthesizing method of the EGFe with excellent flame retardancy for linear low density polyethylene (LLDPE) was optimized through L9(34) orthogonal experiment. Especially, the mass ratio of FeCl3 to normal expandable graphite (EG) prepared in advance with chemical oxidation method was 0.1:1, dosage of NH3?H2O with a wt% of 25% was controlled as 0.4 mL, the reaction lasted 2.5 h at room temperature, and the final drying temperature was 100°C. Characterizing results testified the EGFe kept a layer structure just like natural graphite, and the hydrolysis product of FeCl3 was Fe(OH)3, and it mainly covered on the outside surface of the EG. EGFe possessed a better dilatability and flame retardancy for LLDPE than the EG.

Aim: To determine the Apolipoprotein profile and CD4+ T cell count in adult HIV seropositive participants in Nnamdi Azikiwe University Teaching Hospital Nnewi, South Eastern Nigeria. Methods: Blood samples collected from the 300 randomly recruited participants were used for HIV screening, CD4+ T cell count, Apolipoprotein A-1, A-11, B, C-11, C-111 and Apo E. Standard Laboratory methods were used for the analysis. Results: The results showed that the mean serum Apo A-11, Apo B, Apo C-11 and Apo E levels were significantly higher in symptomatic HIV participants not on antiretroviral therapy (ART) compared with asymptomatic HIV participants at P< 0.05, in each case. But the mean serum Apo A-1, Apo C-111 and CD4+ T cell levels were significantly lower in symptomatic HIV participants not on ART compared with asymptomatic HIV participants at P< 0.05, in each case. Also, the mean serum Apo A-11, Apo B and Apo E levels were significantly higher in symptomatic HIV participants not on ART compared with HIV seronegative control subjects at P<0.05 respectively. However, the mean serum Apo A-1, Apo C-111 and CD4+ T cell levels were significantly lower in symptomatic HIV participants not on ART compared with asymptomatic HIV participants at P<0.05 in each case. Again, the mean serum Apo A-11, Apo B, Apo E were significantly higher in asymptomatic HIV participants compared with HIV seronegative control subjects at P<0.05 in each case. But the mean serum Apo A-1, Apo C-11 and CD4+ T cell levels were significantly lower in asymptomatic HIV participants compared with HIV seronegative control subjects at P<0.05 in each case.

Five mixed Schiff bases complexes of Co(II), Ni(II), Cu(II), Zn(II) and Fe(III) ions with two different Schiff bases, first Schiff base namely{2-((2-hydroxy-1-phenylethylidene)amino)-3-(4-hydroxyphenyl)propanoic acid} derived from the reaction of 2-hydroxyacetophenone and tyrosine as main ligand (HL1) and the second one namely {4-((2-(2,4-dinitrophenyl)hydrazono)methyl)-N,N-dimethylaniline} is formed from the condensation of 4-dimethylaminobenzadehyde and 2,4-dinitrophenylhydrazine as a second ligand (HL2) were prepared. The Synthesized Schiff bases and their mixed Schiff base complexes were subjected to several physiochemical tools; in terms, CHN elemental analyses, molar conductivity, infrared, proton nuclear resonance, electronic, mass and electron paramagnetic resonance spectra. The CHN elemental analysis results showed the formation of the Schiff bases and their complexes in 1:1:1[M:L1:L2] ratio. The molar conductivity values revealed that Co(II), Ni(II), Cu(II) and Zn(II) mixed Schiff base complexes to be electrolytes due to the existence of sodium ion outside the complexes, but the iron(III) mixed Schiff base complex is neutral confirming the presence of non-electrolytic natured. The infrared spectral data of the mixed Schiff base complexes exhibited chelation behavior between the metal ions and the Schiff bases through the active groups presented in the Schiff bases such as nitrogen atom of the azomethine and oxygen atom of the hydroxyl group. The signals which obtained from the 1HNMR spectra of the Schiff bases and their Zn(II) complex supported the chelation between the Zn(II) ion and the Schiff bases. Whereas, the UV spectral data of the Schiff bases displayed the p?p* (Phenyl ring) and n?p* (C=N and –OH) transitions and the UV-Vis spectral results of the mixed Schiff base complexes suggested the geometrical structure which is an octahedral geometry around the metal ions. The mass spectral fragmentations of the Schiff bases were studied and confirming the formation of the Schiff bases, also the mass spectral fragmentations of the Iron(III) mixed Schiff base complex was done. The electron paramagnetic resonance spectral results confirmed the data which are obtained from UV-Vis study.

Clay from Iliri was activated using hydrochloric and sulfuric acid of differing concentrations to acquire differing acidities. The chemical compositions of the raw clay and clay activated at different acid concentrations were analyzed to investigate the extent of cation dissolution. From the Na2O to CaO ratio, Iliri clay is swelling sodium bentonite mixed with feldspars, illite, kaolinite and plagioclase. The Langmuir isotherms of 1-aminobutane in isohexane agitated with clay slurries showed increase in clay acidity with increase in concentration of mineral acid used to leach the clay as well as the temperature at which the clay was thermally activated prior to experimentation involving adsorption of 1-aminobutane. The values of surface acidity, nm, for acid-leached Iliri clays ranged from 0.811x10-3 molg-1 to 6.7705x10-3 molg-1 and the kinetic equilibrium constant of adsorption, K, varied from 0.07828 to 0.7233 yet the surface area, A increased from 5.2702 x10-3 m2g-1 to 50.6700 x10-3 m2g-1 . Basing on acidity, pH, elemental and mineral compositions, the Iliri clay was resolved to contain montmorillonite.

Wet oxidative degradation is a simple treatment process based on the degradative action of hydrogen peroxide solution on the organic part of the waste and then its oxidative action on the degraded moieties converting the waste to carbon oxides and remaining secondary waste solution that contains some inorganic residues. In this study wet oxidative degradation of waste protective clothes simulate as a component of organic solid waste was performed at ~100oC and 760 mm Hg under different experimental conditions. (e.g. different weights of solid waste simulate: 35% hydrogen peroxide solutions ratios, type of catalyst and different concentrations of the catalyst used). Elemental Analysis and Infrared spectroscopy (IR) were used as tools to follow up the degradative and oxidative actions of 35% hydrogen peroxide on the protective clothes waste as a component of the solid cellulosic waste. Keeping the amount of 35% hydrogen peroxide added constant and increasing the weight of the protective clothes accompanied by detectable decreases in weight reduction and conversion percentages.