Perovskites are very interesting for applications such as optoelectronic devices emitting light, such as OLEDs and lasers. On the other hand, one can consider using these perovskites in a very special architecture: the tandem cells. The principle of these tandem cells is to put i...
Open access
Research Article10.9734/CJAST/2019/46444
Aims: Is to detailed Land Resource Inventory at block level. The objective of the study was the characterization and classification of soils of the Elamdesam block, Idukki district Kerala. Place and Duration of Study: Soil survey done and soil samples were brought from Elamdesam...
Open access
Research Article10.9734/CJAST/2019/44649
This paper describes the development of a wireless sensor network that uses pressure variation to detect and locate leaks in a prototype oil pipeline. The HK1100C oil pressure sensor is used as a sensing unit to sense/monitor pressure variation inside the prototype oil pipeline a...
Open access
Research Article10.9734/CJAST/2019/45505
Aims: Assessment of the involvement of farmers in cocoa production-related activities with a view to improving qualities and quantities of cocoa production in Oyo State, Nigeria. Study Design: Random sampling. Place and Duration of Study: Oyo State, Nigeria; 2017/2018. Methodolog...
Open access
Research Article10.9734/CJAST/2019/45002
Policy-makers, development-practitioners, international organizations and academic scholars have over the years taken stern initiatives to tackle climate change issues. Climate adaptation along with various commitments and political will have given much weight to a growing concer...
Open access
Research Article10.9734/CJAST/2019/45659
Background: Cell damage due to oxidative stress during the neonatal period has been associated with diseases. Human breast milk is an important source of antioxidants which protect newborn against oxidative stress damages. However, the dietary habits of lactating mothers may infl...
Open access
Research Article10.9734/CJAST/2019/45960
Size, shape, volume, surface area, density, porosity are some physical characteristics, which are important in many problems associated with the design of a specific machine. The physical properties of wild variety of Buchanania lanzan seeds have been evaluated as a function of s...
Open access
Research Article10.9734/CJAST/2019/46137
Lead is one of the trace metals frequently found in the soil, air and water bodies. Since lead has no known biological value and highly toxic even at low a concentration, its ubiquity in the environment has become a major issue of concern globally. In this work, a review was cond...
Open access
Research Article10.9734/CJAST/2019/46073
Because the scientific theories tackled in engineering education are relatively sophisticated, the education strategies should be subjects of investigation by researchers. In this study, a learning motivating strategy for engineering education was proposed. The proposed strategy...
Open access
Research Article10.9734/CJAST/2019/44042
In this present era, the Internet is considered to be most important tool for education, entertainment, communication, and information-sharing. Internet, being widely accessible globally, the risk of “internet addiction” is emerging as severe behavioral addiction pandemic. The st...
Open access
Research Article10.9734/CJAST/2019/45652
Liners are very important part of engineered landfills as they control the migration of leachates and other toxic constituents into underlying aquifers or nearby rivers, thereby contaminating the local water. Hence, materials to be used as liners should be able to stand the test...
Open access
Research Article10.9734/CJAST/2019/19778
Aims: The objective of this work was to investigate the effect of the thermal insulation with polystyrene or local straw on the indoor comfort (time evolution of temperature and hygrometry, variation of thermal load). The study aimed also to determine the optimal thickness of the...
Open access
Research Article10.9734/CJAST/2018/45351
This research was undertaken to comparatively determine the effects of corrosion in cast steel C-1030 and copper C-642 used as selected materials in marine heat exchanger design. Cast steel C-1030 immersed in freshwater at 0.0003M after twenty one (21) days (0.0567yr) gave corros...
Open access
Research Article10.9734/CJAST/2019/45822
Aims: To develop and evaluate an affordable, accessible, easy-to-operate and functional small-scale thresher machine to make cowpea farming a profitable venture. Study Design: Fabrication and performance evaluation. Place and Duration of Study: Premises of DAF Technical Services,...
Open access
Research Article10.9734/CJAST/2018/43751
Aims: To determine the natural radionuclide concentrations and the associated health hazard implications in samples from refuse dumps in the Federal University of Technology, Owerri, Nigeria. Study Design: Forty (40) samples from refuse dump sites were collected at different loca...
Open access
Research Article10.9734/CJAST/2018/45075