Complexes of the type [ML′L(OH)(H 2 O)], where M = Ni(II), Co(II) or Mn(II), L′ = isatin and HL = 3-(2-phenylhydrazono)acetylacetone, 3-(2-(4--chlorophenyl)hydrazono)acetylacetone or 3-(2-(4-bromophenyl)hydrazono)-acetylacetone, were synthesized by equimolar reaction of a metal(II) chloride with isatin and a 3-(2-arylhydrazono)acetylacetone. The resulting complexes were characterized by elemental analyses, molar conductivity, spectral data (IR and mass spectrometry) and magnetic moments. Furthermore, the ligands and their metal complexes were screened for their cytotoxicity against different human cancer cell lines using the sulforhodamine B (SRB) assay. The results showed that most of the mixed ligand metal complexes have high cytotoxicity in comparison with the reference drugs used.
Electromagnetic field (EMF) is a field of combination between electric and magnetic field. While electromagnetic radiation (EMR) can be divided into ionizing and non radiation (NIR). This article review of published scientific studies about NIR and its effect on the human body. From this review, it is found that NIR gives effect towards the human body if it is exposed towards NIR in long time exposure. NIR also creates a thermal effect in long time exposure. This paper tends to create awareness for public that non provide an adverse effect towards public since its source is within our everyday life. For future study, we suggest for a policy to be applied in Malaysia as a basic gui exposure and an implementation of mapping for EMR exposure at East and West of Malaysia to create an easiness for future researcher do a research in the EMR field study.
The optical properties of polyvinyl alcohol (PVA) doped TiO2 and ZnO nanoparticles respectively, were studied. PVA/TiO2 and PVA/ZnO nanoparticles were prepared by the pulsed laser ablation technique (PLA).The optical properties of PVA/ TiO2 and PVA/ ZnO nanocomposite solution have been investigated by transmittance data and absorption spectra. The optical band gap (Eg) was determined and the optical absorption spectra showed that a direct transition. The energy gap of PVA/ ZnO nanoparticles have been observed the decreases its value and increasing in the optical conductivity as compared to PVA/ TiO2.The refractive index (n), extinction coefficient (k) and dielectric constant have been also investigated; it was found that all the above parameters affects by doping.
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