Security and safety is a critical factor of concern in Nigerian university campuses. Having a secured environment for learning can help students and staffs meet up with their expectations. The electronic security system is a major approach in reducing the risk against deliberate attack by intruders. This paper has shown that, integrating electronic security and lighting system can be a cost effective approach of security management in reducing the cost spent on tightly controlled university security budgets. Consequently, the savings from the security budget can be spent on other educational programs which are more beneficial to students and staff of the university

Drying of moringa leaves is a preservation activity done by farmers and herbal practitioners. The most common way to do this is to place the leaves on a mat, floors etc. and leave it in the open to dry. This process takes a long time and makes the leaves subjected to attack by the weather, animals and insects. It also affects the quality, nutritional values and the potency level of the leave when exposed to the direct sunlight. This paper outlines systematic design and construction of indirect forced convention solar crop dyer for drying moringa leaves and presents the results of calculations of the design parameters. A batch of moringa leaves 2 kg by mass, having an initial moisture content of 80% wet basis from which 1.556 kg of water is required to be removed to have it dried to a desired moisture content of 10% wet basis, is used as the drying load in designing the dryer. A drying time of 24-30 h is assumed for the anticipated test location (Kumasi; 6.7oN, 1.6oW) with an expected average solar irradiance of 320 W/m2 and ambient conditions of 25oC and 77% relative humidity. A minimum of 0.62 m2 of solar collection area, according to the design, is required for an expected drying efficiency of 25%. The dryer was constructed using locally available materials. It is recommended that a test under full loading conditions should be carried out in order to know if all the design parameters have been met and laboratory experiment should also be done to know the effects on the nutritional values of the moringa leaves when sun dried and solar dried

The Video Capturing Vehicle (VCV) is a wireless remotely controlled video capturing device with ground mobility and a simulated flight control. This project focused on designing and building the video capturing vehicle’s motherboard and its remote control device. The video capturing vehicle’s motherboard consists of a microcontroller (PIC16F84A)to decode, interpret, and execute control signals; motors (dc and stepper) and a mechanical system, for movement and direction control; an IP camera, for capturing the video feeds; and a FM receiver module, for data and control signal reception. The remote control system consists of a computer system (with the Microsoft Windows operating system installed and a built-in WLAN adapter) and the built USB interfaced control device. Computer program software was developed for the computer system to capture video feed and send control signals to the USB control device. The control device uses the PIC18F2550 microcontroller to encode received control signals and modulates a FM transmitter module, which sends the VCV control signals via radio-link. The video capturing vehicle can be used for several purposes like surveillance (for security reasons), viewing of human inaccessible area, experimentation (monitoring a health hazardous experiment remotely), among others

Self compacting concrete has ability involves not only high deformability of paste or mortar, but also resistance to segregation between coarse aggregate and mortar when the concrete flows through the confined zone of reinforcing bars. In recent years, self-compacting concrete (SCC) has gained wide use for placement in congested reinforced concrete structures with difficult casting conditions. For such applications, the fresh concrete must possess high fluidity and good cohesiveness. The initial results of an experimental program aimed at producing and evaluating SCC made with high volumes of fly ash are presented and discussed. Nine SCC mixtures and one control concrete were investigated in this study. The content of the cementitious materials was maintained constant (400 kg/m3), while the water / cementitious material ratios ranged from 0.35 to 0.45. The self-compacting mixtures had a cement replacement of 40,50 and 60% by Class F fly ash. Tests were carried out of hardened concretes such as compressive strength .The selfcompacting concretes developed a 28- day compressive strengths ranging from 26 to 48 MPa.

Security systems play an important role in the protection of lives and investment. The aim of this project is to design an efficient and cheap security system, which is accessible from any part of the world through the internet, and can be employed in every facet of the economy. This is achieved by incorporating various subsystems (such as surveillance, intruder control, access control, fire detection, etc.) into the security system with a single control unit. The conceptual model includes the following modules: Access control unit (Biometrics), Smoke detector unit, Temperature sensor unit, Intruder detector unit, Surveillance unit, Alarm system unit, and Web based monitoring and control unit. The main control unit is a microcontroller which performs real time monitoring and is interfaced with a PC. The PC runs an application that consists of a web based Graphical User Interface (GUI) which displays access characteristics, sensor levels and security status which can be monitored and controlled by an administrator (a human user). Sensory responses, fed to the PC by the microcontroller, is displayed on the web based GUI

The technology of data mining is used in extraction of useful knowledge from large data sets. The process of data collection and data dissemination may, however, result in an inherent risk of privacy threats. Before publishing or sharing private information about individuals, businesses and organizations have to be suppressed. Privacy-preserving data mining has thus become an important issue in current years. This paper has review of evolutionary privacypreserving data mining technology to find appropriate method to perform secure transactions into a database.

Space cooling has become a major source of energy use, such that, during the hot summer months, cooling performance of two-stage indirect/direct evaporative cooling system is experimentally investigated in the various simulated climatic conditions. For this purpose, a two-stage evaporative cooling experimental setup consisting of an indirect evaporative cooling stage (IEC) followed by a direct evaporative cooling stage (DEC) was designed, constructed and tested. Due to the wide variety of climatic conditions in Erbil, Results show that under various outdoor conditions, the effectiveness of IEC stage varies over a range of (55–65) % and the effectiveness of two stage IEC/DEC unit varies over a range of (90-110) %. Aspects of achieving comfort conditions and power saving have been investigated with related excess water consumption. Considering the evaporative comfort zone, this system can provide comfort condition in Erbil-Iraq where direct evaporative alone is not able to provide summer comfort condition. More than 60% power saving could be obtained by this system in comparison with mechanical vapor compression systems with just 55% increase in water consumption with respect to direct evaporative cooling systems. The final outlet temperature of air in two stage modes IEC/DEC ranges between 23 0C and 25 0C.

The paper presents results of field load-settlement tests of full-scale foundations, resting on soils reinforced with concrete piles of different vertical cross-sectional shapes.The study was carried out in construction sites in Minsk, Belarus. Deformation patterns of the foundation soils, reinforced with piles of cylindrical and conical vertical crosssectional shapes were studied. The results of the study showssimilar variation in the patterns of vertical deformation of the soils reinforcedwith both cylindrical and conical vertical cross-sectional shaped piles. The deformation patterns of the soilsalong horizontal axis shows that, with cylindrical shaped piles as soil reinforcing elements, maximum deformation of the soil base was recorded along the edges of the foundation plate, while with conical shaped piles, maximum deformation was recorded along the center line of the foundation plate.

Tannery industry is one of the large scaled industry which produces lot of organic wastes per day. Tannery effluents contain lot of hazardous elements which can affect human immunity when it is directly discharged in water bodies. Tannery waste water was collected and a novel approach of using natural coagulants and locally available commercial grade lime were used for coagulation and flocculation. The collected tannery waste water was basic in nature with ph of 8. Conductivity at 30˚c was found to be 98.5 mg/l. Transmittance is found to be 2% and other initial parameters like TDS, absorbance, turbidity, odor, color were also checked. 1N nitric acid is added at 15ml/l to the waste water for preservation. For coagulation and flocculation the ph was altered by using sulphuric acid and sodium hydroxide. Coagulation is done using natural coagulant moringa olifera and lime is used. The coagulants are aided with coagulant aid (polyelectryolyte) and some of the chemical coagulants like alum, ferrous sulphate, Ferric chloride and calcium chloride. The result was found to be effective in treating tannery waste waters. The initial parameters of the tannery waste water are reduced to satisfactory levels. Hence it is proven that natural coagulants and lime can be used for treatment of tannery waste waters

Educational institutions are growing rapidly in our country owing to the increase in demand for higher education. In Tamilnadu itself nearly 2500 higher educational institutions are available which are serving 30 districts. Huge amount of population is using these institutions for their day to day activities, considerable amount of waste water is being generated by each institution. A study conveys that nearly 1 million liters of water is consumed as an average by an University, roughly 80% of its turning to be waste water. Not many institutions are adopting proper treatment methodologies for purifying this waste generated and also not many studies had focussed this area. Mostly the waste water arising out of educational institutions are matching the domestic waste condition, in this research an attempt is made at finding the efficiencies of magnesium sulphate, as chemical coagulant to treat the waste water of educational institution. Similarly, the efficiency of mixture of magnesium chloride with poly electrolyte was tested. The result obtained by adding magnesium chloride proved that it can be use for the treatment of turbidity and transmittance in educational institution waste water. The results obtained when magnesium chloride combined with poly electrolyte were much better. It is found that nearly 97% removal of turbidity is achieved during this study and also 95% transmittance level is achieved, also complete odour removal is obtained by the coagulation process. Hence magnesium chloride can be effectively used as a coagulant aid with any chemical coagulant like polyelectrolyte and alum for treatment of waste water from educational institutions

Mostly the waste water arising out of textile industries are matching the inorganic industrial waste water condition, in this research an attempt is made at finding the efficiencies of powdered natural coagulant alternative to the use of synthetic chemicals to treat the waste water of textile industry. The result obtained by adding M.oleifera proved that the plant can be use for the treatment of turbidity and transmittance in textile industry waste water. The results obtained when the natural coagulant combined with alum were much better. It is found that nearly 97% removal of turbidity is achieved during this study and also 95% transmittance level is achieved, also complete odour removal is obtained by the coagulation process. Hence Moringa oleifera can be effectively used as a coagulant aid with any chemical coagulant like alum for treatment of waste water from dying industries.

Sound that is unwanted or disrupts one‘s quality of life is called as noise. When there is lot of noise in the environment, it is termed as noise pollution. Sound becomes undesirable when it disturbs the normal activities such as working, sleeping, and during conversations. It is an underrated environmental problem because of the fact that we can‘t see, smell, or taste it. Community noise, or environmental noise, is one of the most common pollutants. It is defined by the World Health Organization as noise emitted from all sources, except noise at the industrial workplace. ‗Community noise includes the primary sources of road, rail and air traffic, industries, construction and public works and the neighbourhood‘ (WHO, 1999).Environmental noise is increasingly becoming a community concern internationally . Considerable efforts have been made over about the last four decades to reduce noise impacts from transportation sources such as road and rail traffic and aircraft. Nonetheless, many of the benefits of these efforts have been lost due to increased traffic volumes (by all modes) for longer periods of the day and evening. At the same time increases in urban population have resulted in greater exposure of a larger percentage of the population to the increased noise levels. World Health Organization stated that ―Noise must be recognized as a major threat to human well-being. According to the USEPA, there are direct links between noise and health.

Extract of Clerodendrumphlomidis plants leaves was investigated as corrosion inhibitor of mild steel in 0.5M HCl using conventional weight loss method and scanning electron microscopic studies. The weight loss results showed that all the plant extracts are excellent corrosion inhibitors, Scanning electron microscopic studies provided the confirmatory evidence of improved surface condition, due to the adsorption, for the corrosion protection.

There are many ways to reduce environmental pollution (carbon dioxide) that causes by production of Portland cement and cause by the increasing of waste material. Geopolymer concrete results from the reaction of a source materials fly ash, bottom ash and granulated blast furnace slag (GBFS) with alkaline liquid. In this experiment fly ash and bottom ash based geopolymer is used as the binder and fillers, in the replacement of Portland cement and natural sand to produce geopolymer concrete. The alkaline liquid that been used in geopolymerisation is the combination of sodium hydroxide (NaOH) and sodium metasilicate (Na2SiO2). The result shows that the strength of the geopolymer concrete improved with curing period and temperature