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Design of a model pulverized coal combustion system
Get PDFThe design of a model pulverized coal combustion system is undertaken. The system consists of a hopper, screw conveyor, blower, electric motor, among others. The design of the system focused on the following procedures in this work: The outlet of the pulverized coal from the silo opens directly into the receiving hopper of the screw conveyor. The drive of the blower is connected to the drive of the screw conveyor via bearings, pulleys, belt and gears. This means that one electric motor drives both the blower impeller and the screw conveyor shaft. The outlet of the conveyor is connected to the blower outlet hole so that the air from the blower meets the incoming pulverized coal. The air then sprays the pulverized coal into the already heated combustion chamber. The combustion chamber is heated initially with a pilot flame from burning wood so that the temperature of the chamber is elevated so as to make it easy for the pulverized particles of coal to ignite easily in the chamber. Once the combustion of the pulverized coal has started, the pilot flame can be withdrawn, combustion of the coal then continues until the content of the silo is finished. The ash formed during combustion of coal goes out through the ash exit outlet
Development And Implemention Of Smoke Detection Alarm System
Get PDFA smoke detector alarm is a fire protection device that automatically detects smoke and also gives us warning. In the proposed system, a smoke detector upon senses smoke activates its alarm, sends a low voltage signal to all The individual smoke detectors are equipped with all the electronics required to both send and receive signals. They are battery operated and therefore they require no external connections. They can be installed by a homeowner just as they would a normal smoke detector. The proposed design is aiming to have Cost efficient system, Compact design, easily expandable, Simple to install, Replaceable components. The system was tested indoor and outdoor with different distance and with the presence of noise. Standard for Safety of Smoke Alarms, to measure the performance of a large number of existing smoke alarms
Non-Fungible Token (NFT) Technology
Get PDFNon-fungible tokens (NFTs) are a new type of unique and indivisible block chain-based tokens introduced in late 2017. This seminar report addresses this gap in theoretical and practical knowledge and demonstrates the efficacy of NFTs in the domain of event ticketing. It’s follow a rigorous design science research approach of designing, building and thoroughly evaluating a prototype of an event ticketing system based on NFTs. Thereby, we demonstrate the usefulness of NFTs to tokenize digital goods, prevent fraud and improve control over secondary market transactions. Further, we contribute generalizable knowledge of the benefits and challenges of NFTs and derive implications for both researchers and practitioners. Finally, this paper proposes managerial recommendations for building applications utilizing NFTs and enables other researchers to draw on its findings and design principles.The concept of NFT originally comes from a token standard of Ethereum, aiming to distinguish each token with distinguishable signs. This type of tokens can be bound with virtual/digital properties as their unique identifications. With NFTs, all marked properties can be freely traded with customized values according to their ages, rarity, liquidity, etc. The thousand fold return on its increasing market draws huge attention worldwide
Financial Crimes Control in Nigeria: an Assessment of the Economic Financial Crimes Commission (EFCC)
Get PDFThe research work examined Financial Crimes Control in Nigeria. with preference to the Economic Financial Crimes Commission (EFCC). Empirical studies suggest that financial crimes in Nigeria adversely affect the country socio-economically politically and globally. Financial crimes control by Anti-financial crimes Agencies in the Nigeria like EFCC has not been encouraging to meet the expectations of the government, Nigerians and the global community The objectives of the study were – to examine the effect of financial crimes on Nigeria development; to find out the roles EFCC have employed in financial crime control in Nigeria; to identify the achievements EFCC has made in financial crime control in Nigeria; and to find out the challenges EFCC have encountered in financial crime control in Nigeria. The study adopted the Hyper-motivation theory; applied a descriptive survey research design with structured questionnaire as the main instrument for data collection. The population of the study is the 3,267,837 residents in Enugu State (National Population Commission of Nigeria, 2006). The sample population derived via the application of Taro Yamani sample size determination formula was 400. The data collected via questionnaire were analyzed using table and percentages, while the hypotheses tested were tested using the chi-square statistical tool. The findings of the study revealed that Financial crimes affect Nigeria development socio-economically, politically and globally; EFCC performs roles in financial crimes control in Nigeria; EFCC has done well in financial crimes control in Nigeria but a lot still needs to be done by the Commission to enhance financial crimes control in the country; and EFCC encounters challenges in financial crimes control in Nigeria. Based on the findings, the study recommended that the Nigerian government at all levels etc should all join hands in sensitizing Nigerians and the perpetrators of financial crimes on the devastating effects of financial crimes of the country’ development drive socio-economically, politically and internationally; the roles of EFCC as contained in the Act establishing the Commission should be strengthened; EFCC staff should be fully independent and act professionally in line with the Act establishing it; the identified challenges of the Commission should be vigorously addressed by the government at all levels to strengthened the Commission financial crimes control in the country and reduce its effects on Nigeria development
Socio-Historical Antecedent of Ethno-Religious Conflicts and Development Issues in Nigeria
Get PDFThere has been a popular misconception about the genesis of ethno-religious conflicts and socio- political imbalance between the North and South, the trinity and the rest ethnic groups in Nigeria. Federalism is regarded as the slogan of existing member states whose composition in any case infringes the principle of internal self determination for ethnic groups, or as the legitimate demand of ethnic nationalities many of whom still consider themselves submerged. It is thus legitimate to insist that the character of the Nigerian federation, otherwise known as “the federal character of Nigeria” is historically determined. The ultimate origin of multi- ethnicity lies in our pre-colonial history though it came unmistakably to the surface only after 1946. It at the root of the imperious and insistent demand by each ethnic group, no matter how small numerically or how poor materially. or how backward educationally for a recognized, fair and dignified place in the Nigerian sun. Language has been treated as the easiest and most objective criterion for determining ethnic affiliation. The duality of North and South derives from psychological and irrational hang-over from our colonial past which have transformed an imaginary line on our country’s map into a barrier that only few have been able to scale. It is at the root of the tension and mutual suspicion between the ‘North ‘and the ‘south. This paper attempts to locate this malaise on the unholy and forceful marriage of all hitherto independent kingdoms that today make up the federating units of Nigerian society
Influence of Advertisement in Social Media Comedy Skit on Brand Awareness and Loyalty
Get PDFWith the transition from traditional entertainment methods to the burgeoning popularity of social media comedy skits, both researchers and advertisers have recognized the significant potential of this medium in achieving marketing goals. This study examines the impact of advertisements in social media comedy skits on brand awareness and loyalty. A survey research method using a purposive sample of 338 students from the University of Nigeria Nsukka was selected for the research. The findings reveal that all participants became aware of brands featured in social media comedy skits. However, less than half reported making a purchase based on these advertisements. Furthermore, the responses were split when assessing brand loyalty. This suggests that while social media comedy skits are effective in enhancing brand awareness, they do not necessarily guarantee brand loyalty
Influence of Advertisement in Social Media Comedy Skit on Brand Awareness and Loyalty
Get PDFWith the transition from traditional entertainment methods to the burgeoning popularity of social media comedy skits, both researchers and advertisers have recognized the significant potential of this medium in achieving marketing goals. This study examines the impact of advertisements in social media comedy skits on brand awareness and loyalty. A survey research method using a purposive sample of 338 students from the University of Nigeria Nsukka was selected for the research. The findings reveal that all participants became aware of brands featured in social media comedy skits. However, less than half reported making a purchase based on these advertisements. Furthermore, the responses were split when assessing brand loyalty. This suggests that while social media comedy skits are effective in enhancing brand awareness, they do not necessarily guarantee brand loyalty
Dynamics of Human Capital Development and Economic Growth in Nigeria
Get PDFThis paper investigates the dynamics of human capital development and economic growth in Nigeria using time series data spanning from 1981 to 2022. The major sources of the data were from the World Development Index (WDI) and Central Bank of Nigeria (CBN) statistical bulletin various issues. The macroeconomic variables selected were Gross Domestic Product (GDP) as a proxy for economic growth, government expenditure on education (GEE), government expenditure on health (GEH), tertiary school enrolment (TSE) and gross capital formation (GCF). The paper engages the technique of Vector Error Correction Model (VECM) and the result indicates that expenditure on education and tertiary enrolment were positively related to economic growth while expenditure on health and gross capital formation exert negative though significant in the short run. The implication of the above findings suggests that human capital development has not been well attended to in the case of Nigerian economy and thus causing human capital to impact insignificantly on per capital income. Based on the above findings, the paper recommends that government should increase its revenue allocation to the development of human capital through education, tertiary enrolment, health and gross capital formation. More so, government should guarantee that expenditure on education in all levels is paramount in ensuring inclusive growth in Nigeria
Characterization of Nutritional and Phytochemical Compositions of Locally Consumed Leafy Vegetables from Afikpo, Ebonyi State, Nigeria
Get PDFVegetables are an important part of human and animal diets worldwide. This is because veggies contain crucial protective nutrients for good health and illness prevention. Many vegetables, on the other hand, have yet to be described to determine their nutritional value. We used standard analytical methods to analyze the nutritional and phytochemical contents of four traditional leafy vegetables (P. soyansii, P. santalinoides, V. doniana, and C. esculenta) consumed in the South-East (Ebonyi), Nigeria. Data were analyzed using Graph Pad Prism 7.0 set at p<0.05 statistically significant level. We presented results in graphs accordingly. The maximum magnesium content was found in Vitex doniana while the lowest was found in P. santalinoides. Calcium concentration was highest in Colocasia esculenta and lowest in P. soyansii. Zinc was high in V. doniana but was not significant (p<0.05) in P. santalinoides. Vitamin C was the most abundant in C. esculenta, followed by vitamin B1. V. doniana has greater amounts of vitamins B3 and E than other veggies. A considerable number of bioactive compounds were found in the leaves of P. soyansii, P. santalinoides, V. doniana, and C. esculenta. The alkaloid content of P. soyansii was the greatest, while that of P. santalinoides was the lowest. C. esculenta has a high saponin content, while P. soyoansii has a low saponin content. In addition, tannins and phenol are both abundant in C. esculenta, but not phenol. Therefore, we reported that these vegetables have a significant dietary role in human nutrition, particularly in the prevention of malnutrition illnesses by micronutrients and bioactive supplementation
Evaluating the Efficiency of Modified Silica Gel with N, N\u27-Ethylenebis (acetylacetone)diamine for Copper (II) Ions Removal in Aqueous Solutions
Get PDFThis study evaluated the adsorption capacity of physically modified silica gel (SG), for copper (II) ion using aqueous solutions of N, N’-Ethylenebis(acetylacetone)diamine-C18H28N2O4 (EAD). Copper (II) adsorptive efficiency was studied under different experimental conditions and optimized before spectrophotometric analysis using EAD reagent. Results indicated that sorption of Cu(II) was favourable at pH 4, and sample volume of 50 mL, themin-1. The quantitative recovery of Cu(II) ion was achieved by elution with 5.0 mL of 1.0 molL-1 HNO3. Equilibrium data were tested and found to follow the Langmuir isotherm model. Kinetic data fitted well in pseudo-second-order kinetics. These results suggest that modified SG is an excellent metal extractor for the preconcentration of Cu(II) from the spiked aqueous phase. In conclusion, the physically modified silica gel showed a high potential for the removal of copper (II) ions from aqueous solutions. The adsorption capacity was influenced by the concentration of EAD in the solution, with the highest adsorption capacity observed at an EAD concentration of 2 mM. The study provides valuable insights for the development of effective and efficient adsorbents for heavy metal ion removal from wastewater