Ubong Robert

Akwa Ibom State University · Physics

Selected types of waste papers were incinerated under the same conditions. The ashes derived from the incineration of waste papers were quantified. The flowability of the derived ashes was characterized. Although non-pozzolanic, the ashes showed chemical similarities with cement. This research was designed to assess the yield and quality of ash pre...

Practical demonstrations by teacher and learner, especially in Science Education, make teaching-learning process pragmatic, learner-centred, easier to understand, and more appreciated. Also, it has been observed that radioactivity is one of the important topics in Physics and Chemistry at Secondary School levels. Unfortunately, its concept appears...

To determine the density and viscosity of different engine oil grades to ascertain the one that is best for car engines.

This study was designed to examine the feasibility of recycling cassava effluent, sawdust, and unused paper products to enhance their utilization for beneficial purpose. Waste newspaper paste (WNP), Waste writing – paper paste (WWP), and Waste carton paper paste (WCP) were prepared and then used separately to similarly fabricate composite panels wi...

Practical demonstrations by teacher and learner, especially in Science Education, make teaching-learning process pragmatic, learner-centred, easier to understand, and more appreciated. Also, it has been observed that radioactivity is one of the important topics in Physics and Chemistry at Secondary School levels. Unfortunately, its concept appears...

Yearly, groundnut shells are generated in vast quantities as waste materials but under-utilised. As a result of inefficient solid waste management system in developing and less-developed countries, their disposal is prevalently done by open burning, unplanned landfilling, and indiscriminate dumping. Any of these practices pose severe adverse effect...

The world population is growing at an alarming rate and human needs for technology and easy lifestyles drive dependency on oil energy into excessive demand, resulting in more pipelines, pipelines that are often subjected to various form of abuse. The aim of this research is to investigate the perception of oil and gas pipeline third-party interfere...

Large quantities of waste newspapers and sugarcane bagasse are prevalently discarded by open burning or indiscriminate dumping, thereby posing severe danger to the environment and public health. This study sought to examine the feasibility of managing the wastes by recycling them into value-added products for building construction. Composite panels...

A novel study of dielectric properties of discs developed separately using nano-powder of calcined Clams, Periwinkle, and Oyster shells has been carried out. The shells (obtained from market dumpsite) were washed, air-dried, calcined and ball-milled to nano-powder having particles that sized at most 80 nm. In each case, five thicknesses of discs we...

In recent years, the demand for thermal insulation has been very high. Consequently, assorted new heat-insulating materials are being developed in order to meet the needs for thermal insulation in buildings, power engineering, refrigeration, spacecraft, mechanical systems, firemanship, installations, and industrial facilities among others. Enhancem...

The literature is flooded with scientific information on most durability properties except water absorption coefficient of masonry units like sandcrete blocks. Also, while waste papers disposal is a systemic problem due to ineffectiveness of waste management system in developing countries, the price of cement is on the increase. This situation, ult...

The choice of mulching or topsoil covering material for the retardation of soil water loss through evaporation requires a good knowledge of thermal properties of the material. Peduncle of oil palm empty fruit bunch was obtained from some local oil palm processing units in Uyo, soaked in water and air-dried completely before shaping and subjecting s...

Thermophysical properties of clay sample obtained from Agbani in Enugu State, Nigeria, were investigated, analyzed and compared with similar properties reported for some walling and roofing materials, including clay samples from other locations for the purpose of establishing its suitability as walling material for the design of naturally-cooled bu...

In this investigation, Clam, Periwinkle and Oyster shells were separately treated , calcined and ball-milled into nano powder. Each nano powder material was fabricated into disc of various lengths in three replicates. In each case, the electrical characteristics of the discs were determined. Electrical resistivity values obtained for test samples d...

Hydrocarbons, often known as oil and gas, are commonly found in conventional reservoirs in the Niger Delta. This trend in the exploration sector has impeded the search for unconventional types of reservoirs, which include shale gas reservoirs, which is currently the global trend in energy resources. Consequently, estimates of oil and gas reserves a...

Coconut husk is generated yearly as waste in large quantities but majorly under-utilized. Also, as a result of high embodied carbon, cement production is one of the largest contributors to construction sector carbon footprint. Since accumulation of unmanaged agro-waste like coconut husk has an increased environmental concern due to its pollution ef...

Just like disposal of waste papers by indiscriminate dumping, stabilisation of clay soil using cement or by firing has a potential adverse effect on the environment and public health. Thus, the essence of this work was to investigate the feasibility of chemically modifying clay soils using waste papers in order to solve the disposal problems and al...

There are materials that could serve useful purpose(s) in many fields, but they are left unutilized due to lack of both the knowledge on their useful properties and availability of values as per such properties. Notably, the knowledge of dielectric properties of some materials of plant origin is lacking whereas such is necessary for industrial, agr...

It has been observed that clay soil cannot be used for building design, unless it is modified by firing or with cement. Either method of stabilization can adversely affect the environment and public health just like indiscriminate dumping or open burning adopted in developing countries as the prevalent disposal technique for waste papers. This pape...

In the midst of challenges facing affordable, safe and sustainable housing development, there is a continuous increase in the vast amounts of carton papers, melon seed husks, and groundnut shells discarded as waste materials. This is of great concern, especially, as such residues are under-utilised and their improper disposal creates grave problems...

In Nigeria, sawdust is continuously generated in large quantities as waste but majorly under-utilised, a situation which causes serious environmental problems and health hazards when managed improperly. This work focussed on production and assessment of hygrothermal properties of solid core sandcrete blocks in which sand is partially replaced with...

Sandcrete blocks are used predominantly as walling elements for shelter construction in developing countries like Nigeria. Though several researches have revealed that the effect of incessant rise in the cost of sand suitable for production of sandcrete blocks could be mitigated by partial substitution of sand with waste materials, information on p...

Assorted potential thermal insulators are fabricated nowadays for possible applications in various fields. Unfortunately, drawbacks like selective suitability, unavailability, and expensiveness hinder the progress in the usage of several devices that are efficient and suitable for probing the thermal conductivity values of such materials. Though th...

Waste generation is a consequence of human activity and as such, it is certainly inevitable. The huge amount of wastes generated all over the world varies exponentially with population growth. In order to ensure sustainable development, there is need to prevent wastes from downgrading the economy, and also taking a toll on the environment and healt...

Due to the problems militating against solid-waste management in developing countries, the disposal of sugarcane leaves is majorly done by burning in an open space. Such practice usually results in environmental pollution due to generation and emission of carbon dioxide. There is need to look into a scientific way of reducing the waste in question...

This research paper presents analysis of electrical resistivity values of soots formed by combustion of kerosene, diesel fuel, aviation fuel (Jet A.1), that of kerosene -diesel mixtures at different proportions and that of aviation fuel (Jet A.1)-diesel mixtures at various percentages. The results of the analysis reveal that soots formed by combust...

This study was designed to assess the possibility of tailoring waste papers and wood dust into composite materials with plaster of Paris (P.O.P) and also determine the suitability of using the developed composites as ceiling panels in building construction. Assorted un-used papers collected as waste materials were processed into waste paper ash (WP...

Pore fluid and lithology content was determined using the calculated velocity ratio and Poisson’s ratio. From the analysis of velocity ratio and Poisson’s ratio, the gas sand, oil sand, and brine sand were mapped out. The gas sand predicted from the rock physics analysis using lambda-mho and mu-rho was confirmed by the analysis of velocity ratio an...

This work sought to investigate the effect of varying the frequency of an applied electric field on the dielectric constant of raphia hookeri. The aim of the work was to ascertain the suitability of using the sample for engineering applications. It was revealed, from the recorded results, that the dielectric constant of the sample decays exponentia...

Quick look analysis was performed in five (5) wells across a depobelt in the Niger Delta region, Nigeria using lithology (gamma), porosity (sonic, neutron and density) and saturation (resistivity) logs to infer six possible hydrocarbon plays. These plays showed good hydrocarbon saturation with a thickness between 11ft (3.35m) and 120ft (36.58m) tha...

Dielectric constant, loss angle and dissipation factors were determined for eggshell membrane of some select bird species. The results revealed that eggshell membrane of Hen (local free-range fowl), Layer (agricultural farm fowl), Duck, Turkey and Quail has dielectric constant values of 6.016, 5.556, 6.809, 6.145 and 2.632, respectively, at frequen...

Background Specific heat capacity is one of the prominent and deciding factors for selection of thermal insulation materials in thermal engineering. In recent times, there has been a great advancement in the manufacturing of a variety of advanced materials in order to meet the modern needs for thermal insulation. Unfortunately, certain drawbacks li...

Sandcrete block is the most popular building material in construction industry. However, with the high and increasing cost of building materials experienced nowadays, it has been difficult to achieve affordable housing especially in developing countries. Also, significant dredging of sand for block production and the large amount of coconut husk th...

Background: The choice of a suitable soil for an intended application depends, basically on one’s thorough knowledge of soil properties. Soil color and thermal properties have been found to vary from place to place. However, there is no scientific information on the properties of a soil type formed with different colors in a location and exposed to...

Disc-shaped compacts were fabricated from two mix proportions of calcined eggshell nanopowder and dry cassava starch and then used as test samples. The electrical resistance (R), thermal sensitivity index (β) and electronic activation energy (Ea) of the samples measured over a temperature range from 35 to 75oC were found to decrease non-linearly in...

In this work, dry forms of waste newspaper pulp, untreated wood dust and treated wood dust were used at varying weight proportions to fabricate composite panels which thenafter served as test samples. With increase in the content of either the untreated wood dust or the treated wood dust in the developed panels, the results showed increase in the m...

This work sought to assess the suitability of using boards produced with plaster of Paris (P.O.P) and various weight proportions of groundnut seed coat (GSC) as well as P.O.P and similar proportions of waste newspaper paste (WNP) as ceiling in building design. The results obtained from the investigation of thermal and mechanical properties of the f...

Three bands of cement with different trade names, Dangote, UNICEM, and Eagle cement were separately molded into cement-sand blocks at different proportions of cement sand ratio of 2:3, 3:7 and 1:4 by weight for each of the cement brand were prepared and allowed to cure. We exposed the blocks to gamma radiation for the determination of attenuation c...

In this work, the properties of the composite produced from waste carton with various tiger nut fibre contents having cassava starch slurry as binder were investigated. The results obtained showed the ranges of the mean thermal conductivity, bulk density, specific heat capacity, thermal diffusivity, thermal absorptivity, nailability, flexural stren...

In this work, a modified water displacement method (MWDM) was designed and used alongside geometry method (GEM), overflow method (OFM) and water displacement method (WDM) for determination of bulk volume of a porous solid. Their results were analyzed graphically and statistically. On testing against the data obtained by Suspension/Buoyancy Method (...

Bulk density (ρ), specific heat capacity (c), thermal conductivity (k), thermal resistivity (r), thermal diffusivity (α), water absorption (WA), flexural strength (σ), and compres-sive strength (CS) were determined for composite boards produced using cassava starch with the graduated percentage of waste newspaper paste and treated coconut husk as w...

A cross-sectional survey design was used to investigate the prevalence of asthenopic symptoms among 354 computer users with respect to the level of EMF radiation from computer monitor screens. The results of the study revealed a significant association between the risks and the radiation level as well as a significant increase in angle of gaze b...

In this research work, a modified water displacement method (MWDM) was designed and used in addition to geometry method (GM) to measure the bulk volume and then determine the bulk density values of asbestos ceiling board, cardboard paper, chalk, clay (compacted) and gypsum board that have been sun-dried to constant weight. The mean bulk densities d...

This study attempts to answer the questions on whether the number and spatial distribution of available state owned primary and secondary schools in Akwa Ibom state, Nigeria can actually support the government policy of free and compulsory education in the state. The study examined the relationship between the available public schools and populatio...

Thermo physical properties of Alates (Swarmers) termite wing has been investigated. The result of our investigation shows the values of thermo physical parameters of the sample materials as 0.0403Wm-1 K-1 being the mean thermal conductivity value, bulk density of 188. 8kgm-3 and thermal diffusively value being 8.2485 x 10-8 m 2 s-1. The values are...