567 research outputs found
Recommended from our members
Assessment of Environmental Consciousness among Patrons in Selected Academic and Public Libraries in Lagos Metropolis
The study examined environmental consciousness patterns among patrons in academic and public libraries. Using the survey method,
data was collected from 383 patrons who were conveniently selected from six libraries in Lagos metropolis.
Cronbachâs alpha coefficient was used to determine the internal consistency and reliability of the multiple item scales. The least Cronbachâs Alpha value returned for the variables in the questionnaire was 0.79. Q
uantitative
data was analysed using descriptive and inferential statistics. Waste disposal was found to be the most disturbing environmental issue. Respondents from both academic and public libraries agreed that there is not enough useful information on adopting pro-environmental behaviours (PEBs). Further findings showed that respondents from both academic and public libraries demonstrate similar pattern of motivation towards environmental consciousness. It is recommended that libraries should include services that will foster eco-friendly behaviour among library patrons
The Effect of Water Salinity on Permeability of Oil Reservoir
The recovery of oil from clay-sandstone as revealed by past studies can be improved by increasing the concentration of the salinity in the core. This is as a result of the sensitivity of the clay-sandstone to the water salinity. Conversely, there is no established model to predict the permeability of core for a given concentration of brine and the value of concentration for optimum oil recovery. Data from experiment on clay content sandstone from different cores in Berea were analyzed and permeability was found as a function of concentration of brine as From the model for the variation of permeability of natural clay-sandstone as a function of brine concentration, 12179.79 kgm-3 concentration of brine will give equivalent permeability of the natural core filled with air, in comparison with possible maximum permeability of the reservoir for optimum oil recovery
2 Kings 18:26-28 and the Role of Indigenous Language in the Growth of African Independent Churches in Nigeria
This research exposed the fact that the use of foreign language during worship in the mainline church was a setback to the churches in Africa. This gap was largely filled by the indigenous church leaders at the beginning of their advent through the instrument of indigenous language. Language is a pivotal means of self expression, in the communication of the religious message and medium of interactions in the religious context. Its relevance makes man a unique creature among others. This study attempted to reveal the successes achieved so far by the indigenous people as they Africanized the Christian worship with the instrument and use of African languages. It uncovered the use of indigenous language as the weapon with which they Africanized Christianity and took the gospel to the root of their society. How indigenous language permeated the liturgy of the indigenous churches and their operations with African cosmological views are exposed in this study. It concluded with cautions to the modern trend of using purely English language to conduct worship in new age Pentecostal churches as a way of limiting their outreaches to others in the land
Employment [Chapter 6]
This chapter focuses on the employment embodied in the hydrogen supply chain activity implied by the headline input-output âmultiplierâ values introduced in Chapter 3 and decomposed for output and total value-added (GDP) in Chapter 4. Here attention is on considering the composition of hydrogen supply chain multipliers in terms of the sectoral location of jobs and the associated generation of wage income. The latter gives some indication of the âquality of jobsâ associated with particular areas of the hydrogen economy. This is in so far as wage income is an element of value-added at the economy-wide level (GDP by an income measure) and to the individuals who receive earnings from paid employment. Given that jobs in the input-output framework are reported in full-time equivalent (FTE) units (for reasons of aggregation across sectors) it is not possible to consider the quality of jobs from a part-time vs. full-time perspective. However, Chapter 7 does go on to consider skills requirements, which is another important indicator of the quality of jobs/employment (and one that may, to some extent correlate with wage incomes)
Introduction to macroscale scenario switching â from refined fuels to hydrogen in personal transport [Chapter 3]
This chapter introduces the core scenario for which potential economic impacts of hydrogen and fuel cells in the UK are considered in this White Paper. This focuses on the replacement of petrol and diesel in cars with hydrogen, with some attention to the manufacture and uptake of hydrogen-ready cars and short-term investment in activities such as Research and Development and construction required to enable such as switch
Effective Invigilation as a Panacea for Examination Malpractices among Students of Tertiary Institutions in Nigeria
Examination by whatever name it is called is very important to educational system as air is important to life Examination serves very many useful purposes at any education system and level The useful purposes of examination at any education system can be marred by its conduct especially if it allowed for examination malpractice Examination malpractice is one of the plagues that be devilled tertiary institutions in Nigeria Examination malpractice in the tertiary institutions is on the increase daily taking different forms and dimensions However the menace thrives well when examination invigilation is very slack Examination invigilation rests solely on invigilators and other stakeholders in the conduct of examinations invigilation Therefore examination invigilators determine the quality of examination invigilation Effective invigilation of examination can only be made possible through effective invigilators who will reduce if not totally eradicate the menace of examination malpractice and this is the thrust of this pape
Modelling the impact over time - consumer transport [Chapter 9]
This chapter considers a few simple scenarios that introduce some potential scale to the input-output multiplier model analyses in Chapters 3, 4 and 6 in considering the potential wider economic impacts of a projected shift to a hydrogen economy. Again, focus is mainly on the case of private transportation and the shift from petrol/diesel (refined fossil fuels) to hydrogen, with the supply chain of the latter proxied by those of the existing UK gas and/or electricity supply sectors. The key characteristic of these proxies is the markedly stronger up-stream supply chain linkages within the UK economy as compared to the more import-intensive refined fuel supply industry. A central conclusion of the modelling work in this paper is that if a future hydrogen sector shares this characteristic, net positive impacts on the UK economy as whole are likely when/if private transportation transitions to the use of hydrogen as a fuel source
Cost-benefit analysis of replacing maize with rice husk supplemented with grindazyme, nutrsea xyla or roxazyme g enzyme supplementation in the diet of Arbor Acres broilers
The experiment was carried out to investigate the cost-Ââbenefit of replacing maize with rice husk supplemented with enzymes in the diet of arbor acres broilers. The experimental design was a 2Ă4 factorial combination of two dietary level of rice husk (0 or 25%) with four levels of different enzymes 0E (without enzyme 0ppm), 100E (100ppm of Nutrase xyla), 150E (150 ppm of Roxazyme G), or 350E (350ppm of Grindazyme). Rice husk was added at the expense of maize in the control diet and each experimental diet was tested during a 56-Ââday feeding trial in triplicate. One hundred and ninety-Ââtwo (192) one-Ââday old unsexed Arbor acres chicks were used in the trial. Each of these was undertaken in the presence of no enzyme 0E (0ppm) or with different types of commercial enzymes at recommended level, which are 100E (100ppm of Nutrase xyla), 150E (150ppm of Roxazyme G), and 350E (350ppm of Grindazyme). Cost of each ingredient was used to calculate the total cost; there were reductions in the cost of raising 1Kg of Arbor acre broiler on supplementation of the rice husk diets with commercial enzymes. The 25% replacement of maize with rice husk supplemented with commercial enzymes has no detrimental effect on the performance of the birds; rather the saving cost was associated with improved weight gain. The inclusion of rice husk supplemented with any of the enzymes in the diets reduced the cost of producing broilers and hence increased profit
EXPERIMENTAL INVESTIGATION OF THE POTENTIAL OF LIQUIFIED PETROLEUM GAS IN VAPOUR COMPRESSION REFRIGERATION SYSTEM
The essence of refrigeration systems cannot be overemphasized especially in this part of the globe. Perishable items are to be preserved for some periods before usage while human comfort should also be also be paramount since we are in the northern hemisphere of the globe. The device hat doe this uses refrigerants as working fluids which are traditional harmful to human beings through depletion of the ozone layer. Majorly Ozone layer protects the earth from warming which could lead to flooding. Common economical refrigerants like CFCs (Chlorofluorocarbons) have been discovered to be harmful to the earth. This article therefore, experimented the quantity replacement of CFCs with Liquefied Petroleum Gas in various mixes. The LPG (Liquefied Petroleum Gas) used consists a mixture of propane and butane in the ratio 6:4 by mass. The blend of the two refrigerants were shaped essentially by blending at least two single-part refrigerants, the GWP (Global Warming Potentials) of a refrigerant mix is the mass-weighted normal of GWPs of individual parts in the mix. That is, to compute the GWP of a mix, one essentially adds the GWP of the singular parts with respect to their (GWP (LPG) x M (LPG)) + (GWP(R-134a) x M(R-134a)) = GWP (blend). From the evaluated GWP of the 6 different % mass composition, the % mass of (100%/0%) was the only refrigerant to adhere to the preferred GWP<150. The mass composition of blend (100%/0%) LPG/R-134a was first performed. In-order to achieve this, 8kg of each of the refrigerant was used. The blend was formed in an empty cylinder which was measured as 2482g with the aid of a digital beam balance, by gradually injecting LPG into the empty cylinder till the mass percentage of the 2000g entered, making the mass read as 4,482g (i.e., 2482g of the empty cylinder + 2000g of LPG). Based on the above observations, it could be inferred that the COP (Coefficient of Performance) of mixed refrigerants blends was higher than that of R-134a indicating that each of the blend exhibit higher performance. The experiment discovered that LPG could be used in the place of R134a without affecting the operation efficiency of a vapor compression refrigeration system. The study concludes that LPG offers the best alternative when the COP and flammability are combined as performance metric
- âŠ