Open Access Journal of Scientific, Technology & Engineering Research

International Journal of Technology Enhancements and Emerging Engineering Research (ISSN 2347-4289)

IJTEEE Volume 2 - Issue 11, December 2014 Edition - ISSN 2347-4289

All listed papers are published after full consent of respective author or co-author(s).
For any discussion on research subject or research matter, the reader should directly contact to undersigned authors.

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Mara Junus, Parung Herman, Tanijaya Jonie, Djamaluddin Rudy

ABSTRACT: The purpose of this study is to determine the behavior of beam-column sub-assemblages castella due to cyclic loading. Knowing these behaviors can if be analyzed the effectiveness of the concrete filler to reduce the damage and improve capacity of beam castella. Test beam consists of beam castella fabricated from normal beam [CB], castella beams with concrete filler between the flange [CCB] and normal beam [NB] as a comparison. Results showed castella beam [CB] has the advantage to increase the flexural capacity and energy absorption respectively 100.5% and 74.3%. Besides advantages, castella beam has the disadvantage that lowering partial ductility and full ductility respectively 12.6 % and 18.1%, decrease resistance ratio 29.5 % and accelerate the degradation rate of stiffness ratio 31.4%. By the concrete filler between the beam flange to improve the ability of castella beam, then the beam castella have the ability to increase the flexural capacity of 184.78 %, 217.1% increase energy absorption, increase ductility partial and full ductility respectively 27.9 % and 26 %, increases resistance ratio 52.5 % and slow the rate of degradation of the stiffness ratio 55.1 %.

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Labeeb Mohammed, Al Neelain

ABSTRACT: The main idea of the project is about improving the mines detection methods, maximizing efficient of the detecting operation, and also minimizing cost, time, and effects that occurs as a product of mines. Among of the problems that appear as impacts of buried mines; the first of all is life-threatening, including the civilian people, the military soldiers, the specialists’ in the field of the detection, and even the animals walking around the suspected areas. And on the other hand there are several problems occur during attempting of the detection, the most influential problem is represented as the duration of the detection processes, the indiscriminate and unregulated mine's scan operations, and taking into account the unfitness human nature at many sensitive stages of the detection process. By using a mine detector attached at the bottom of an automatic controlled copter supported with a positioning system (GPS) and a communication device to transfer data, receiving the detected mines coordination, and finally uploading the acquired data to a server’s database with a and capability of sharing the acquired data with other users., combining all of those are represented a radical solution for the all previously mentioned problems.

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Teklay Mezgebe, Assefa Sergawie

Abstract: The voltammetric study of sildenafil citrate has been studied on glassy carbon electrode using cyclic voltammetry and differential pulse voltammetry method. Sildenafil citrate gives a single irreversible oxidation wave over the wide pH range studied. Using differential pulse voltammetry and cyclic voltammetry, sildenafil citrate yielded a well defined voltammetric response in Britton-Robinson buffer solution, pH 3.26 at 1200 mV verses Ag/AgCl.

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Kuffour Collins, Benjamin M. Tiimub

ABSTRACT: Water is one of the most important compounds that profoundly influence life. In spite of its enormousness, increasing the population of any country increases the demand for water supply and everything needed by man for survival. Satisfying these anthropogenic needs tend to change the originality of some of the existing natural resources of which water is of no exception. Once these water resources are polluted, its quality cannot be restored by minimizing the factors that contribute to the pollution. The most common source of pollution of water is from substances used in forestry, waste and agriculture such as insecticides, herbicides, fungicides etc, and aerosols from pharmaceuticals and personal care products. The study was conducted to possibly determine the sources of pollution of a dam, a pond and two point boreholes that were actively in use by the people of Appiakrom community in the Sekyere Central District in Ashanti region of Ghana. Physical observation of site condition and community-based response survey were used with laboratory work being the main instrument for analyzing the physiochemical state and bacterial content of the water. The study revealed that the dam that supplied the whole district with water had been polluted as a result of anthropogenic activities that were evitable. The rusty nature of the undrinkable borehole was attributed to the underground parent materials in the area where the borehole was constructed. The Ghana Water Company Limited should therefore insist on the owners of the pond to resort to dug wells as their main source of water to the pond and block the channels constructed out of the dam to reduce the possibility of pollutants moving from the pond to the dam due to the pond-dam interface. Finally farmers around the bank of the dam should be entreated to practice zero fertilizer farming to avoid leaching of acid forming compounds into the dam.

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Hayelom Dargo Beyene, Ephriem Tadesse

ABSTRACT: The study of solvent effect used to describe the pronounced charge in position of Uv-visible absorption band that accompanies change in the polarity of the medium. Para nitro aniline-salicylic acid (PNA-SA)is newly synthesized compound which has different position of Uv-visibile absorption band in the protic and nonprotic solvents. The study was aimed to study the solvatochromism, band appointment charge transfer, dipole moment. The wavelength and intensity absorption bands are both affected when a molecule is solvent environment. This is due to unequal perturbation of the ground state and exited state. The basic parameters of each individual band were proportional to the energy and the probability of corresponding transition. The absorption spectra Para nitro aniline-salicylic acid (PNA-SA) was found to be two main bands at which350nm which saw that hypsochromic/ shift with n→π* transition and 375nm shows bathochromic shift with π →π* transition which result high dipole moment difference between the ground state (8.2107D) and exited state(35.8877D) with the moderately efficient charectestic of charge transfer with 59% . Thus, it is possible to conclude that PNA-SA can be used as a good solvent polarity probe.

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Y. S. Agunleti, E.A. Arikawe

ABSTRACT: The geotechnical investigation of a site at Kuje, FCT Abuja was carried out to determine the sub - soil condition of the site to suitable depth, which could have an influence on structures, also to understand the engineering and geologic properties of the soil. The field work commenced on the 18th of March and was completed on the 20th of March, 2014. Samples from the field were then analyzed in the laboratory for its strength, consolidation and compaction characteristics. A total number of nine (9) trial pits at an interval of 30m from each other was probed to a depth of 1.5m. With regards to the soil studied in the site, the use of isolated conventional pad foundation at depth of 1.5m below, with ground beam appears suitable across the site. This should be adequate as the investigation shows an average allowable bearing capacity of 121KN/m2 for strip footings and 150KN/m2 for square footings. For cuts and fills the soil information suggests that a generalized guideline can be recommended however, the final decision of foundation type should be dependent on the type of structure to be erected and is therefore based on the structural engineer’s discretion.

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Y. S. Agunleti, E.A. Arikawe

ABSTRACT: Federal Capital Territory, Abuja largely falls within the North-Central Basement Complex of Nigeria, which is underlain by crystalline basement rocks. Groundwater resources in the crystalline basement complex are restricted to features produce by weathering and tectonic processes and therefore the reason to locate fracture/weathered zone to ensure maximum and sustainable yield. This study was carried out to illustrate the application of vertical electrical sounding (VES) and remote sensing techniques for efficient groundwater resources. The advent of computer software and associated numerical modeling aided such approach for groundwater exploration more especially in a regional scale. The modeling of the VES measurements carried out at Nineteen (19) stations has been used to derive the sub-surface geo-electric sections for the various profiles. Geologic sequence in the study area is composed of three to six sub-surface layers. The first layer is the top soil with resistivity ranging from 32.32- 73.1 ohm-m and a thickness range from 0.6m – 1.96m, Second layer is a lateritic layer ranging from 112.6 to 190.8 ohm-m with a thickness range of 0.65 to 1.96m, weathered basement ranging from 68.26 to 796.4 ohm-m with thickness range of 2.96 to 5.44m as the third layer. The fourth layer with resistivity value range between 50.2 to 205.6 ohm-m and thickness range of 4.23 to 43.95m is noted as the weathered/fractured basement (water bearing). The layer is extensive and thickest at VES station 5and 6, thus serve as a good reservoir for groundwater exploration. The fifth layer is presumably fresh basement whose resistivity values vary from 1049Ωm to 49334Ωm with an infinite depth.

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Joseph A. Anejo, Raymond M. Damen

ABSTRACT: Concrete is a versatile construction material. Its most critical property is the compressive strength. The basic constituents of concrete are a cementitious material and aggregates. The most common type of cementitious material used for concrete in Nigeria is Ordinary Portland Cement. The strength of concrete and the rates at which it is developed depends largely on the type and quality of cement. The rates of strength development of concrete using some selected brands of cement in the Nigerian market were investigated by means of laboratory tests. It was established that, the concrete develops an average of 26% of the 28 day strength in 1 day and 85% in 21 days. It is concluded that concrete develop strength rapidly at early age compared to later ages. Most cement brands in Nigeria develop strength at satisfactory rates.

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Y.S. Agunleti, K. Peter

ABSTRACT: There is no doubt that one of the oldest industries in the history of man is coal mining industries. In Nigeria, coal mining can be traced to Ogbete coal mine in Enugu as far back as 1916. Today’s mining engineers are the link between production and technical services by determining the direction the project will take and how it will get there. These cannot be over-emphasized with the immense contribution of the geologist for effective delivery of a cost effective mine plan. These processes are integrated with each other in a flow-geological model, to mine design, to mine plan, to production schedule and to mine reclamation. A well-integrated process flow allows the engineers to mesh and sequence steps in the process, maintaining the consistency of data that leads to meaningful results. One of the most commonly used software packages in geological modeling for coal is GemcomMinex. It’s effective software used in the study area “Okobo” to calculate the coal reserves and conduct mine planning and scheduling of mine activities. Strater 4 is a powerful and innovative well log, borehole and cross section plotting software which is gaining relevance in exploration for stratified deposit. The graphical view of drill-hole data at various intervals within the studied area shows an average depth of 20m as studied in a 2-dimension view showing coal stratification withinMamu formation and an average thickness of 1.92mfor 78,929tonnes of coal.

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