In Hong Kong, STEM (Science, Technology and Mathematics Education) education was promoted since 2015. After proposed in the same year’s Policy Address, the Education Bureau (EDB) would renew and enrich the curricula and learning activities of the Science, Technology and Mathemati...
Open access
Research Article10.9734/CJAST/2018/45120
Mineral concentration and trace element content in leaves (tender and matured), flowers and pods of M. oleifera grown in Bangladesh was investigated. Atomic Absorption Spectroscopy and UV visible spectroscopy methods were used for this analysis. Content of some of the essential e...
Open access
Research Article10.9734/CJAST/2018/45645
Mealybug (Paracoccus marginatus) belonging to the family Pseudococcideae, is a devastating pest of grapevine in different parts of the world including India. Due to its piercing sucking type feeding behaviour, it injures the vines mechanically and induces several physiological &a...
Open access
Research Article10.9734/CJAST/2018/44028
Background: Petrol pump attendant is an occupation practised worldwide. It exposes these groups of workers to petrol fumes especially in sub-Saharan Africa where petrol pump attendants is still the norm. Study Objective: To determine the effect of petrol fumes on ventilatory func...
Open access
Research Article10.9734/CJAST/2018/45437
The drying characteristics and the effect of drying air temperature on hot air drying of aloe vera (Aloe barbadensis Miller) were investigated at 50, 60, 70 and 80°C. Five thin layer drying mathematical models (viz. Logarithmic, Newton, Henderson–Pabis, Page and Modified Page) we...
Open access
Research Article10.9734/CJAST/2018/45591
Problem: The major problems in the present world include global warming and climate change which adversely affect the environment. There is, therefore, a need to reduce Green House Gas (GHG) emissions by replacing the fossil fuels with renewable energy resources like biogas. Bio...
Open access
Research Article10.9734/CJAST/2018/45336
Background: Several models have been developed for inflow forecasting in reservoirs based on local parameters which may not include an implicit system characteristic like seasonality. Autoregressive integrated moving average (ARIMA) models can be developed to cater for the presen...
Open access
Research Article10.9734/CJAST/2018/45157
Worried by the massive and persistent failure in secondary school science in Nigeria, the need to research into the effect of process-oriented instructional strategies on spatial abilities and basic science achievement of 9th grade students in Kogi state became very compelling. T...
Open access
Research Article10.9734/CJAST/2018/45179
Pisum sativum L. (Garden pea) is an annual crop of immense importance. In India it is cultivated in an area of more than 280.0 thousand hactares with annual production of more than 4.0 million tonnes but its yield declines heavily due to powdery mildew a fungal disease caused by...
Open access
Research Article10.9734/CJAST/2018/45886
Low productivity (2680 Kg/hectare) (Directorate of Agriculture, Govt. of Bihar; 2012-13) in Bihar is mainly due to late sowing of wheat coupled with prevalent of hot westerly wind during grain filling stage. The wheat production in the state can be increased by two means, either...
Open access
Research Article10.9734/CJAST/2018/45874
Biotechnology provided new dimensions to herbicide technology. Transgene technology has generated herbicide-resistant crops (HRCs) that have profound impact on the herbicide market. This same technology has the significant potential to make crops better competitors with weeds thr...
Open access
Research Article10.9734/CJAST/2018/45888
The present investigation was carried out during Kharif 2013 and 2014 in Rice experimental area, Birsa Agricultural University, Kanke, Ranchi, Jharkhand. One thousand F2 progeny from BG 102/Naveen cross were randomly tagged and selected 200 plants based on four groups viz; high y...
Open access
Research Article10.9734/CJAST/2018/45875
Plants face various abiotic stresses such as drought, salinity, chilling, freezing, and high temperatures etc. during their lifespan. Chickpea (Cicer arietinum L.) is an important food legume crop and heat stress affects chickpea ontogeny over a range of environments. The crop of...
Open access
Research Article10.9734/CJAST/2018/45889
Bottle gourd (Lagenaria siceraria (Mol.) Standl.) bearing chromosome no. 2n = 22, is an annual monoecious crop synonymously called as the white-flowered gourd or calabash gourd. For the above investigation twenty-four genotypes collected from various states adjoining Bihar inclu...
Open access
Research Article10.9734/CJAST/2018/45876