March 2015

Studies on structural, surface morphology and optical properties of Zinc sulphide (ZnS) thin films prepared by chemical bath deposition

Zinc sulphide (ZnS) thin films have been prepared by chemical bath deposition method. X-ray diffraction (XRD) is used to analyze the structure and crystallite size and scanning electron microscopy is used to study the particle size and morphology of ZnS thin film. Optical studies have been carried out using UV-Visible-NIR absorbance spectrum. The band gap value of the film is calculated and it is found to be 3.45 eV....

Author(s): S. Thirumavalavan, K. Mani and S. Sagadevan

March 2015

Soil carbon storage in dominant species of Mangrove Forest of Sarawak, Malaysia

Carbon storage in forest ecosystems involves inordinate components including plant biomass carbon and soil carbon. Sequestration of carbon along with other aggressive conservation efforts helps to reduce the increasing negative impact of global warming on the environment and mangroves as the coastal forest. The objective of this study was to assess the soil carbon storage of dominant plant species of Awat-Awat Mangrove...

Author(s): Chandra Iman Arianto, Seca Gandaseca, Noraini Rosli, Ahmad Mustapha Mohamad Pazi, Osumanu Haruna Ahmed, Hazandy Abdul Hamid and Nik Muhamad Abdul Majid

March 2015

Teaching the effect of variables on the brightness of a light bulb in a simple electrical circuit using a pneumatic system model (PSM)

An experiment-based analogical pneumatic system model (PSM) was developed in this study for the purpose of teaching 5th grade students (11 years old) the variables that have an effect on the brightness of a light bulb in a simple electric circuit. Understanding the analogical relationship between source and target in teaching the variables that have an effect on the brightness of a light bulb in a simple electric...

Author(s): Gonca Harman and Aytekin Çökelez