Volume-7, Issue-12, December 2021

Abstract

Adaptation of new technologies like intensive system of fish culture, processing of fish using modified drum ovum as well as other new technologies were studied in the South East Nigeria. Data collection for this study came from primary and secondary data. The primary data was generated through field survey using well-structured questionnaires as a major research instrument. The secondary data on the other hand were obtained through relevant literature ranging from textbooks, journals, articles, periodicals, seminar papers and proceedings. The result evinced that fish farmers in the entire south east used mainly intensive system of farming and less of extensive system of farming. Modified drum ovum is the most popular processing method preferred by all the fish farmers in the entire five south east states of Nigeria while choker kiln is the least. This can be attributed to its availability and affordability. The study recommends government support towards fish farming activities in the entire five South Eastern States of Nigeria. The farmers are encouraged to form cooperative societies or groups to gain easy access to credit facilities, they should also as a matter of urgency reorganize their various state Agricultural Development Programmes and recruit young fishery graduate that can be deployed in their state local government areas as well as providing financial assistance to these fish farmers through loans, subsidies in the form of feed, fish fingerlings, processing units etc. and organized special trainings in on-farm feed formulation, hatchery, fish processing, marketing, fish pond management and maintenance.

Keywords: Adaptation, New Technology, primary and secondary data, fish farmers and south east.

References

Keywords: Adaptation, New Technology, primary and secondary data, fish farmers and south east.

Abstract

This paper focuses on the prospects of recycled broken sand Crete hollow blocks as fine aggregate for masonry works. Sandcrete hollow blocks were taken from dealers in Zaria and tested for density, water absorption, dimension tolerances, drying shrinkage, wetting expansion and compressive strength as compared to hand moulded blocks which were moulded in the laboratory to NIS 87(2004) specification. Density ranges from 1797.37Kg/m3 – 1974.00Kg/m3 , water absorption ranges from 5.38% - 10.38%, drying shrinkage ranges from 0.028% - 0.044%, wetting expansion ranges from 0.042% - 0.059% and the 28th day compressive strength ranges from 0.45N/mm2 - 0.85N/mm2 . Results showed that density, water absorption, drying shrinkage, wetting expansion and 28th -day compressive strength of block samples manufactured from quarry fine collected from one of the industries was 2070.11Kg/m3 , 9.54%, 0.034%, 0.05%, and 1.38N/mm2 respectively. The study confirmed that the quality of sand Crete blocks manufactured in Zaria does not meet the specified standard in respect of strength.

Keywords: Aggregate, Crushed Sandcrete Block, River sand, waste materials.

References

Keywords: Aggregate, Crushed Sandcrete Block, River sand, waste materials.

Abstract

In this paper, we first introduce and define “Digital Divide 2.0”, and show that, unlike the “traditional” Digital Divide, this is about the survival of countries and their ability to cope with a global environment that is more and more instable and uncertain! We build an argumenta supporting our assumption and, from there, we present the foundations of a computational framework to guide and streamline the Digital Transformation Process.

Keywords: Computational Framework, COVID19, Development, Digital Divide 2.0, Digital Transformation.

References

Keywords: Computational Framework, COVID19, Development, Digital Divide 2.0, Digital Transformation.

Abstract

Furrow irrigation is considered to be inefficient when compared to most pressurized irrigation systems. The objective of this research was to determine if different furrow shapes have different impacts on water management practices such as application efficiency, deep percolation ratio and tail water runoff. Three furrow shapes, a triangular (V-shaped), rectangular (R) and trapezoidal (Tp) shaped were evaluated and the results were compared with output from SIRMOD II. The parameters calculated from field data were not very different from those determined by the model. This indicated that the model predicted the volume balance of the field data with reasonable accuracy. It was observed that the time of advance was shorter for the triangular shaped furrow and much longer for the rectangular shaped furrow. Performance efficiency parameters were good for the trapezoidal and triangular shaped furrows and very poor for the rectangular furrow. Tail water ratio (TWR) was much higher in the triangular furrow and lower in the rectangular furrow. Where there was no deep percolation ratio, the model failed to return a reasonable value.

Keywords: Advance, recession, SIRMOD II, infiltration, application efficiency, deep percolation, run-off.

References

Keywords: Advance, recession, SIRMOD II, infiltration, application efficiency, deep percolation, run-off.

Abstract

The correlation between lithospheric earthquakes on the American continent and tropical cyclones that arose after the French nuclear tests is considered. The transfer of the local impact of TC on the lithospheric plates of the other hemisphere is proposed to be assessed by the effect of "Fantom" TC symmetric with respect to the center of the Earth. It is shown that the localization of earthquakes shifts in accordance with the movement of the "Fantom" TC and its intensity. This indicates that TCs are a trigger for earthquakes in the most intense seismic areas.

Keywords: nuclear test, typhoon, earthquake, american continent.

References

Keywords: nuclear test, typhoon, earthquake, american continent.