A SHETTLE’S METHOD MODEL FOR AUTOMATING PRECONCEPTION SEX SELECTION

The world over, and especially in Africa and Asia, couples show a preference for particular sex of children; eithermale or female. This preference may arise due to economic reasons, customs of the people, or simply for a “genderbalanced family”. Whatever the reasons, the fact still remains that couples would like to be able to choose the sex oftheir children. While there are various options to achieve sex selection, all of them are either too expensive or tooinvasive. This paper presents how Shettles’ method being the least expensive and the most reliable method ofpreconception sex selection was modeled to enable automation. The results show that it is a more consistent andreliable method for gender selection. In addition, the result also shows that the Shettles’ method lends itselffavourably to computer programming and would be very useful in the lives of couples that desire a particular genderof offspring.Keywords: Computer assisted, Preconception, Sex selection, Model, Programming

A New Model for Predicting Elemental Sulphur Deposition in a Sour Gas Reservoir

This research work is concerned with developing a more accurate correlation for the prediction of elemental sulphur deposition in a sour gas reservoir by exploring the relationship between compaction and elemental sulphur deposition over time and also incorporating porosity damage caused by reservoir compaction into the previous models in order to obtain a more robust representation of what actually occurs in the reservoir. The models considered indicates that the established new model gives the most accurate, reliable and practical result in predicting sulphur deposition which suggests that the rate of sulphur precipitation is seemed to have been underestimated by previous models. This may have not been unconnected with the fact that the new model based on non-Darcy flow, incorporated the porosity reduction caused by reservoir compaction which has been hitherto neglected by previous works. Therefore, reservoir compaction is a common phenomenon, which should be considered in sulphur deposition prediction since it leads to a faster rate of sulphur deposition

Attitude of crop farmers towards e-wallet platform of the Growth Enhancement Support Scheme for input delivery in Oke-Ogun area of Oyo state

E-wallet-powered Growth Enhancement Support Scheme was designed by the Nigerian Government to facilitate and improve farmers’ prompt access to agricultural information and input services. An assessment of the pilot phase of the scheme becomes necessary for an effective implementation. The study therefore assessed the attitude of crop farmers towards the e-wallet platform of the Growth Enhancement Support Scheme. A total of 120 crop farmers across the study area were sampled through a simple random sampling method. Data were collected through a well-structured interview schedule, and analysed using percentages, PPMC and Chi-square. Farmers’ mean age was 47 years. Majority were males, married and have an average of 15 years farming experience. Maize and cassava were the most grown crops. Majority indicated non commitment of the ADP and long distance to redemption centre as major constraints to use of e-wallet. More than half had favourable attitude towards the e-wallet platform of the Scheme. There is significant relationship between the years of farming and educational level with farmers’ attitude towards the e-wallet. Constraints faced also had negative influence on attitude to the scheme. Establishment of more redemption centres to stop the rigor of long queues and reduce long distance covered before accessing the centres will make prompt access to information targeted by e-wallet achieve desired end.</jats:p

Elemental Sulphur Induced Formation Damage Management in Gas Reservoir

Sulphur compounds are considered as the most hazardous non-hydrocarbons in reservoir fluids, because of their corrosive nature, deleterious effects of petroleum products and tendency to plug porous medium which may impair formation productivity. Precipitation and deposition of elemental sulphur within reservoirs, near well bore region may significantly reduce the inflow performance of sour-gas wells and thus affect economic feasibility negatively. Studies have sought that almost all deep sour reservoirs precipitate elemental sulphur either occurring as a result of decomposition of H2S to give elemental sulphur or occurring as indigenous usually referred to as native sulphur as a dissolved species. Uncontrollable elemental sulphur induced formation damage has been one of the profit hurting syndromes that occurs in deep water sour gas reservoir. Meanwhile many correlations have been formulated thermodynamically to predict the occurrences of elemental sulphur but little information related to effect of its saturation on gas production and its corresponding formation damage. This paper presents an improved model for predicting elemental sulphur saturation and corresponding formation damage around the well bore. Results show that the minimum pore spaces blockage time was over-estimated by previous formulatio