No abstract

During the last years, the cloud point extraction was applied for determination, separation, and enrichment of the elements. The current study used cloud point extraction (CPE) for the extraction of Ag(I) ions pre-concentration from watery solutions by a non-ionic surfactant (Triton X-114) and chelating agent a 6-(4-bromo-phenylazo)m-anisidine[6-(4-BrPAA)], then estimation by using the spectrophotometry at 514 nm. Several condition effects on the efficiency of the cloud-point extraction included Triton X-114 concentration, [6-(4-BrPAA)] concentration, pH, time, and incubation temperature. The silver reacts with [6-(4-BrPAA)] to produce complex at a ratio of one to one. 0.009 to 1.5 μg mL-1 is the range of linearity. The detection limit and quantification of Ag(I) ion were 0.0054 and 0.0182 μg mL-1, respectively. The interference of the cations was examined. The cloud-point extraction was used for the evaluation of silver concentration in the water specimen.

The metal complexes of Azo dye; 4,4'-((methylene bis(3,l-phenylen)) bis (diazene-l,2-diyl)) bis(1,3-Benzenediol) are produced from 4,4`- methylenedianiline and Resorcinol were synthesized and characterized by using several analytical and spectral techniques. The ligand and its complexes were characterized by many chemo-physic methods like NMR, IR, UV-Vis, molar conductance measurement, analytical measurement, and melting point. The conditions of optimal reaction (for instance reagent concentration, pH etc) were studied and the analytical figures of merit such as limit of detection, linearity, sensitivity etc) were obtained.

The photocatalytic degradation of Cibacron Brilliant Yellow 3G-P (CB) dye in aqueous solution using ZnO, CuO, Au–ZnO, Cu-ZnO, and Au–CuO–ZnO nanomaterials produced using Acacia dealbata leaf extract is described in this study. X-ray diffraction (XRD), Field emission- scanning electron microscopy (FE-SEM), transmission electron microscopic studies (TEM), atomic force microscopy (AFM), element analysis EDX, and diffuse reflectance UV-visible spectroscopy were used to characterize the structural, chemical, morphological, topological, and optical properties of as- synthesized nanomaterials, The characterization research validated the successful synthesis route and demonstrated the effective dispersion of Au and CuO over the ZnO surface. Furthermore, the XRD patterns were discovered to conform to the hexagonal structure of ZnO wurtzite. In addition, A hybrid Au-CuO-ZnO nanocomposite's compositional characterization was explored using EDX-mapping, which proved the efficient distribution of Zn, Cu, O, and Au in the hybrid composite. The roughness of the produced nanostructures was confirmed by topological analysis. With the doping of Au and CuO NPs, the absorption threshold edge of ZnO was moved from the UV to the visible area, according to the optical investigation. Under visible light irradiation, photocatalytic (CB) dye degradation studies demonstrated that the Au–CuO–ZnO nanocomposite is more efficient than pure ZnO at degrading the dye. After 50 minutes After 45 minutes of illumination under ideal circumstances of 1.0 g/L photocatalyst, 10 ppm (CB) dye, and pH 10, photodegradation efficiency of up to 99 percent was achieved. Photogenerated holes and hydroxyl radicals are responsible for the increased photodegradation efficiency of Au–CuO–ZnO, according to the reactive species investigation. The Au-CuO-ZnO nanocomposite displayed high potential stability and recyclability, with 78.6 percent photoactivity remaining after five cycles, according to the recycling data. and study the effect of Au-CuO-ZnO nanocomposite on bacteria of coli Escherichia and Staphylococcus aureus, where these bacteria were used as a representative of the cream negative bacteria and the positive bacteria respectively. The results showed the rate of success (Au-CuO-ZnO nanocomposite) in eliminating and destroying these bacteria and this is possible by using the nanoscale solution to sterilize and eliminate bacteria. By assessing cytotoxicity, it was demonstrated that Au-CuO-ZnO nanocomposite can both kill and stop the proliferation of cancer cells. When compared to cancer cells not treated with the chemical, the Au-CuO-ZnO nanocomposite shown very deadly efficiency against cancer cells by preventing their development and reproduction. One of the most crucial techniques for identifying inhibition in living cells is the procedure of determining the toxicity of the synthesized chemicals. Au-CuO-ZnO nanocomposite had a biological activity with an IC50 of 35.33 g/ml.

In the Indian society, various factors other than mere knowledge have shown to have a more signi icant impact over contraceptive usage and choice such as educational levels of women, marital duration, cultural and social factors, and exposure to mass media. This study focuses on assessing the knowledge, attitude and practices (KAP) of contraceptive use among married women. A cross-sectional study was conducted among married women aged between 18 to 49 years attending a tertiary care hospital in the city of Chennai from June to September 2018. A total of 146 women were interviewed, and the KAP parameters were assessed using a pretested structured questionnaire. Though 97.9% (n=143) of the women in this study had knowledge about some form of contraception, only 24.7% (n=36) practiced them. Among the users (n=36), the decision to adopt contraception was made by the husband in 69.4% (n=25). Among the non-users (n=110), the major reasons for not practicing contraception were lack of interest in 37.2%(n=41) and fear of side effects in 35.5% (n=39). This study demonstrates a signi icant gap between the knowledge and practice of contraceptives in our population. Improving doctor-patient relationship and encouraging a positive attitude of the husband towards contraception are the key factors in promoting adoption of the contraceptive practices.