57 research outputs found
Information and Communication Technology (ICT) for Development – The Exigent and Foundational Approaches for Nigeria
No full textHaving identified ICT production as the component of the ICT revolution that can enhance true socio-economic development to developing countries like Nigeria. This paper
provides a way to achieving this by closely examining what ICT production entails and
positioned that since ICT production is closely related to science, engineering/ technology,
a more meaningful policy implementation in the area of technological growth and Science & Technology education is desirable. The paper is aimed at suggesting the redesigning of the Universal Basic Education (UBE) policy to inculcate ICT production knowledge into Nigerian child from the primary school level if our dream of ICT for development be fulfilled
Attempting the Difficulties Faced by EFL Students in Using Cohesive Devices in Writing at University Level
No full textAbstract: This study aimed at investigating the difficulties encountered by EFL students in using cohesive devices in writing. The researcher adopted the descriptive analytical method for data collection. The researcher used test to collect the data of the study. The researcher gave a test to 40 students of second year English major at University of Bahri 2022 college of Education department of English language. The researcher used SPSS programme to analyze the data, which showed in percentage and numbers of the students. The result obtained confirmed that second year students at university of Bahri have difficulties in using grammatical and lexical cohesive devices in writing. Moreover, the researcher recommended that, English teachers should encourage the students to use different types of cohesive devices in their writing.
Keywords: cohesion, investigation, adopted, encountered and encouragement.
Title: Attempting the Difficulties Faced by EFL Students in Using Cohesive Devices in Writing at University Level
Author: Hajr Hamad Idris Ibrahim, Ishag Adam Hassan Ahmed
International Journal of Social Science and Humanities Research
ISSN 2348-3156 (Print), ISSN 2348-3164 (online)
Vol. 10, Issue 3, July 2022 - September 2022
Page No: 304-309
Research Publish Journals
Website: www.researchpublish.com
Published Date: 19-August-2022
DOI: https://doi.org/10.5281/zenodo.7009914
Paper Download Link (Source)
https://www.researchpublish.com/papers/attempting-the-difficulties-faced-by-efl-students-in-using-cohesive-devices-in-writing-at-university-levelInternational Journal of Social Science and Humanities Research, ISSN 2348-3156 (Print), ISSN 2348-3164 (online), Research Publish Journals, Website: www.researchpublish.co
Analisis Unjuk Kerja Pompa Sentrifugal dengan Variasi Head
No full textPompa Sentrifugal merupakan salah satu jenis pompa yang mempunyai lingkup penggunaan yang sangat luas terkait dengan head dan kapasitas yang dihasilkan. Pada kesempatan ini penulis mencoba memaparkan hasil penelitian tentang unjuk kerja pompa sentrifugal bila dilakukan variasi sudut bukaan katup (valve) pada pompa sentrifugal akan menghasilkan head. Sudut bukaan katup (valve) dimaksudkan untuk mengetahui peningkatan performance pompa yang terjadi akibat pembukaan sudut katup (valve). Menambah bukaan katup (valve) pompa sangat berpengaruh terhadap kapasitas aliran air yang dihasilkan, hal ini juga akan mempengaruhi kerja pompa, kecepatan spesifik, daya dan efesiensi pompa. Sehingga dapat diperoleh titik kerja pompa sentrifugal dengan Kapasitas (Q) 0,000733 m3/s, Head (H) 7,02 m, Daya Hidraulis (Ph) 50,501 watt, Effesiensi (ɳp) 16,396%, hal ini dapat terlaksana bila diikuti penambahan daya dari motor penggeraknya.Centrifugal pump is one type of pump that has a very wide scope of use related to the head and the capacity produced. On this occasion the author tries to explain the results of research on the performance of a centrifugal pump if variations in valve opening angle (valve) on a centrifugal pump will produce a head. The valve opening angle is intended to determine the increase in pump performance due to the opening of the valve angle. Adding to the valve opening (pump) is very influential on the flow capacity of the water produced, this will also affect the work of the pump, specific speed, power and pump efficiency. So that the centrifugal pump working point can be obtained with Capacity (Q) 0,000733 m3 / s, Head (H) 7,02 m, Hydraulics (Ph) 50,501 watts, Efficiency ((p) 16,396%, this can implemented if followed by the addition of power from the driving motor
Emission Characterization of Petrol, Ethanol and Spent Engine Oil Blends for Two-Stroke Spark Ignition Engine
No full textExhaust emission has remained a big global concern in atmospheric change, and has thus, lead to stiffer polices on emission. To achieve the set emission targets different fuel mix and combustion process are continuously been investigated. This work is used to practically model the condition of a two-stroke engine that has run over time whose used lubricating oil finds its way from the sump to the combustion chamber and thus resulting to greater rate of incomplete combustion and higher emission. An exhaust analyser with a deep probe was deployed to access the out-going burnt gasses from a two-stroke spark ignition engine that is fed with multi blends of petrol, ethanol and spent engine oil. The characteristics of the emission constituents were investigated and compared to the global limits set by different organizations such as California Air Resources Board, Environmental Protection Agency in USA, International Council on Clean Transportation, Road Transport Bureau- in Japan, and European Emission Standard Agency, among others. The result shows an increase in , and emissions with samples that contain spent oil as against those with new engine oil which is also more effective. It was also found that samples with higher quantity of ethanol show lower emission of , and gases. This is likely due to interstation of ethanol molecules with that of the spent oil, thus making it more potent for further combustion. This was also supported with the fact that emission was higher in blends with higher quantity of ethanol. Thus, the presence of ethanol in fuel blend used in two-stroke spark ignition engine may be considered to be a source of improvement in combustion and hence a means of reducing emission in two-stroke port operated spark ignition engines
Analisis Penukar Kalor Tipe Shell Dan Tube Sebagian Pemanas Bahan Bakar Residu (MFO) Pada Unit 3 PLTU PT.PLN (Perseo) Unit Pelaksana Pembangkitan Belawan
No full textPompa Sentrifugal merupakan salah satu jenis pompa yang mempunyai lingkup penggunaan yang sangat luas terkait dengan head dan kapasitas yang dihasilkan. Pada kesempatan ini penulis mencoba memaparkan hasil penelitian tentang unjuk kerja pompa sentrifugal bila dilakukan variasi sudut bukaan katup (valve) pada pompa sentrifugal akan menghasilkan head. Sudut bukaan katup (valve) dimaksudkan untuk mengetahui peningkatan performance pompa yang terjadi akibat pembukaan sudut katup (valve). Menambah bukaan katup (valve) pompa sangat berpengaruh terhadap kapasitas aliran air yang dihasilkan, hal ini juga akan mempengaruhi kerja pompa, kecepatan spesifik, daya dan efesiensi pompa. Sehingga dapat diperoleh titik kerja pompa sentrifugal dengan Kapasitas (Q) 0,000733 m3/s, Head (H) 7,02 m, Daya Hidraulis (Ph) 50,501 watt, Effesiensi (ɳp) 16,396%, hal ini dapat terlaksana bila diikuti penambahan daya dari motor penggeraknya.Centrifugal pump is one type of pump that has a very wide scope of use related to the head and the capacity produced. On this occasion the author tries to explain the results of research on the performance of a centrifugal pump if variations in valve opening angle (valve) on a centrifugal pump will produce a head. The valve opening angle is intended to determine the increase in pump performance due to the opening of the valve angle. Adding to the valve opening (pump) is very influential on the flow capacity of the water produced, this will also affect the work of the pump, specific speed, power and pump efficiency. So that the centrifugal pump working point can be obtained with Capacity (Q) 0,000733 m3 / s, Head (H) 7,02 m, Hydraulics (Ph) 50,501 watts, Efficiency ((p) 16,396%, this can implemented if followed by the addition of power from the driving motor
Harnessing Abuja's Municipal Solid Waste as a Renewable Energy Source: Scanning Electron Microscopy Analysis
No full textA study of Abuja’s municipal solid waste (MSW) samples using the scanning electron microscopy analysis was undertaken in this work. In the face of the severe energy poverty being experienced in Nigeria which largely depends on diminishing fossil fuel resources coupled with the associated problem of greenhouse gas emission, the energy potential available in municipal solid wastes needs to be investigated. Using MSW as a fuel source for electric energy production will also positively impact on Abuja’s waste management. This present study requires the analysis of the MSW with aim of confirming that products of its incineration will not be hazardous to the environment. ASTM E 1508 procedures for utilizing the scanning electron microscope (SEM) were followed to identify elements that would be contained in the bottom ash of the incineration process of samples of Abuja’s municipal solid wastes obtained from selected districts of the city. Elemental composition of the bottom ash that will be formed from incineration of Abuja’s MSW was obtained by the use of energy dispersive x-ray analysis. The micrographs plotted indicate that silicon and iron are the principal elements present in the samples with values for silicon and iron being highest at 49.5 and 19.55%, respectively, for the sample from Dutse-Alhaji. The tests also show the presence of silver in the organic wastes generated in Abuja, while presence of sulphur is very minimal. The silicon levels present in Abuja’s municipal solid waste compare well with values for Nigerian coals which have percent silicon contents ranging from 39.0 – 49.4% (Enugu coal – 39.0%; Okaba – 44.8%; Maiganga – 49.4%). The test results also show that Abuja’s MSW samples had grain sizes ranging from 3.5 mm 16 mm. The results indicate Abuja’s MSW combustion rate will be lower than for pulverised coal which is known to have much lower grain size in the range of 75 μm to 106 μm and will need shredding before firing since grain size is a very critical determinant factor in solid fuel combustion rate and burn-out time. The tests conclusively show that Abuja’s MSW will be a more environmentally friendly fuel than coal because of its lower sulphur content
Physicochemical Characterisation of Abuja’s Municipal Solid Wastes as a Renewable Energy Resource
No full textPhysical and chemical composition analyses of Abuja’s municipal solid waste samples have been carried out in this study. Laboratory procedures were employed to determine the higher calorific value, the proximate analysis and ultimate analysis of MSW samples from selected districts of Abuja metropolis. An analytical methodology was therefore employed to determine whether the city’s MSW will be good resource for energy generation as a strategy for effective waste management. Abuja’s MSW has an aggregate higher heating value of 38.13MJ/kg. Moisture content of less than 8% obtained for all the samples compares very well with values for Nigerian coals. Volatile matter was found to be above than 60% for each samples tested while fixed carbon was determined to be less than 26% for each sample. The MSW samples gave excellent results for ash content of less than 4% when compared to most Nigerian coals with minimum ash content of 10.72%. The ultimate analysis shows the MSW samples compares fairly well with Nigerian coal samples in terms of elemental carbon, the least value being 41.80%. The least value for elemental carbon in most coal samples is 53.27%. Also, the sulphur content of the MSW samples is much less (not higher than 0.15%), compared with the least value of 0.58% for the coal samples. All the factors considered above indicate that the Abuja’s MSW will perform very well as a primary solid fuel when incinerated for energy recovery. The economic significance of this study lies in the confirmation that Abuja’s MSW is a good and cheap source of energy for electric power generation, replacing the expensive fossil fuel sources with their attendant hazardous emission to the environment. This will make the study area to be a cleaner and healthier environment
Comparative Analysis of Gas-Turbine Engine Diagnostics through Compressor Wash Wastewater Parameter Monitoring for Geregu Gas-Turbine Power Plant
No full textThis paper focuses on finding a lasting solution to the reason why offline compressor washing of unit 13 at Geregu Power plc in Ajaokuta does not restore power output lost due to fouling back to the rated output, as is the case for the other two (2) units in the plant and for several reported cases published in the literature. Monitoring of parameters closely related to the power output was carried out to find out the root causes for the low output recovery after offline compressor wash and came up with a successful diagnosis by interrelating GT13 wash effluent test results of parameters like conductivity, turbidity, and heavy metal concentration with parameters of two (2) other turbines in the plant. Using statistical tools like the mean and Pearson correlation coefficient for the four-year period, the mean comparative result indicates that the conductivity of GT13 was higher than that of GT11 and GT12 by 50% and 79%, respectively. The turbidity of GT13 was 570% and 700% higher than that of GT11 and GT12. The Pearson correlation coefficients of GT13 effluent conductivity, turbidity, and silica content relative to the power output recovery after wash were (-89.2%), (-64.4%), and (-77.3%), respectively, and the covariance of each of the three parameters relative to one another was high. Effluent Ph as a factor was discarded based on its 0% linear correlation coefficient with the output. The conclusion reached is that the co-linear relationship between conductivity, silica content, and effluent turbidity is responsible for GT13's low output recovery after the wash
Optimizing the Impact and Yield Strengths of Cattle Horn for Engineering Applications
No full textCattle horns are one of wastes materials littering our environment, yet they have potential value in engineering. The work examined the engineering application of cow horn’s impact and yield strength. The physical and mechanical properties were examined to determine their levels of impacts and yield strengths. The horn structure contains keratin with lamellae tubules lapping over each other along the growing direction. The horn microstructures, density, water absorption, compression, flexural, hardness and impact test were examined. The samples have density of 1.303 g/cm3 to 1.376 g/cm3 along the body parts. The cow horns impact resiliencies vary along the parts due to animal maturity and ages. Cow horn withstands compressive stress and bending stress of 1,018.96 MPa and 981.4MPa respectively. The average values of hardness property for longitudinal and transverse are 51.735 N/mm2 and 41.795 N/mm2. The sustainability of the samples was analyzed using L25 Taguchi orthogonal array by examining chemical compatibility, temperature and pressure as variable factors. The properties variations of the horns are attributed to the concentration of keratin substance along the body parts. The work identified an appropriates applications area using an impact and fatigue analysis which provided opportunities to use the material to produce sustainable engineering applications
The role of the accused in English and Islamic criminal justice
No full textThis thesis is a comparative study of the role of the accused in the systems of
English and Islamic criminal justice. It seeks to explore the underlying
relationship between the individual and the state through an historical, structural
and contextual analysis of their rules relating to questioning and of confessions.
The analysis of the English system covers the period 1800 to 1984, with
particular reference to developments during the nineteenth century when the
foundations for the modern English state were established. The analysis of the
Islamic system combines traditionally Islamic and modern methods, assessing the
"Islamisation" movement in Malaysia through a religico-structural understanding
of juristic opinion from the four main schools of Sunnite jurisprudence.
The thesis contributes to existing knowledge on a number of levels: first, it
questions and revises the "myth" of "progress" that has dominated observations
of the history of the English criminal justice system; second, it elucidates the
relationship between Islamic law in theory and the law that is applied and
proposed in its name in Muslim states; third, it provides an analytical framework
for drawing comparisons between the underlying values of the systems of English
and Islamic criminal justice.
While acknowledging fundamental differences in terms of outlook and
articulation, the author concludes there are important similarities expressed
through such notions as "suspect" in the English system and "kafir"I"fasiq" in the
Islamic. These act as intermediate constitutional categories to whom the state
owe less protection. But the author notes also that these similarities are not
observed necessarily in the "law" which is implemented or proposed in Muslim
states; exact correspondence depends upon the over-arching political structure
and the institution of Caliphate.
The thesis is divided into six chapters: chapter one sets out the conventional view
of the historical development of English criminal procedure and evidence;
chapter two subjects that to a critique and chapter three offers a revised thesis.
Chapter four, explores methods for interpreting and explaining Islam; chapter
five sets out rules relating to confessions and questioning according to the four
Sunni schools; chapter six puts them into "context" through an examination of
the "Islamisation" process in Malaysia
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