ABSTRACT We re-examined the phenomenon of rotational instability in radio pulsars on decadal timescales using a sample of 315 radio pulsars whose spin-rates [rotation period (P) and spin-down rate ( P) ] have been measured on, at least two different epochs. The first stage of our analysis involves a direct comparison of the measured values of P and P at two epochs that are ~ 10 - 20 years apart in order to estimate the fluctuation in the parameters. The results show that the fluctuation in t...
Abstract Polyethylene/silica Nano composite was synthesized in different concentrations (2%, 3%, 4%, 10%, 20%, 30%, 40%, and 50%) The samples were subjected to physical evaluation; the result showed that the amount of silica is changed the optical properties (the maximum absorbance was 284 nm) and the composite had moderate refractive index in infra red region but it is de- shielding in part of ultra violet region. Mechanical properties was enhanced .the highest load was 5.4kg to sample...
ABSTRACT Africa is generally believed to be the mother of mankind supported both by archaeological findings [ Davidson, 1974]; and biblical evidences [ Munroe, 2001]. The contribution of Africa to early civilization is a clear testimony and reinforcement to this claim. Some advancements in science and technology were first made in Africa long before they were known in Europe. For example, in Egypt the great engineering ingenuity of constructing the pyramid of 250 meter by 250 meter base, the ...
ABSTRACT Customer service is the most important aspect of every business that builds its processes on the basis of customers going through the queue before receiving any service from the organization. These businesses become ineffective and inefficient if the queues are not moving well or the queues are not fluid. This research was inspired by the customer service of MTN Sokoto branch. System Dynamics was used in order to solve the overcrowd problem of the organization. System Dynamics is a ...
Abstract This research is a study of the techniques of uranium enrichment and physical separation of isotopes, which often resort to when it is difficult to separate them by the usual chemical methods, including many of the mixtures that have already been used, such as uranium enrichment by laser, more common centrifuges, diffraction, thermal spread, magnetic separation and plasma. The enrichment process is important to take advantage of the uranium element as a fuel for various nuclear reac...
Abstract The aim of this study was the extraction and analysis of spearmint and eucalyptus volatile oils. The samples were collected from shambat farms (Khartoum north). The results showed that the Saponification numbers were (24.41, 22.44), acid values were (0.5611, 0.8417), ester numbers were (23.85, 21.60) and peroxide numbers were (0.01, 0.035), Refractive index values were (1.483, 1.473), density (0.755, 0.66) g/cm3 for spearmint and eucalyptus oils respectively. The IR analysis results...
ABSTRACT In our present society today, it is clearly seen that garbage cans are being placed in open environments because it needs to be accessed by the public. It can be observed that those garbage cans usually get filled up and overflow and litter the environment. Patil (2015) claims that this uncontrolled littering can lead to a gradual encroachment of diseases that can be very harmful to the human health. Littered trash can also produce bad and offensive smell around the surroundings. To...
ABSTRACT Unique properties of silver (Ag) and its allied nanoparticles are of great interest in the fields of chemistry and technology. However, the widespread applications of nanoparticles call for synthesis routes involving eco-friendly procedures. Silver nanoparticles (Ag NPs) and their hybrids nanoparticles (Ag-Ni and Ag-Co) were synthesized using locally available biodiversity plants as alternative method to the expensive and toxic chemicals previously used. Fresh plants were collected ...
Population growth and urbanization have led to water scarcity and pollution which is a health hazard not only to human but also the ecosystem in general. This has necessitated coming up with ways of treating water before consumption. Photocatalysis has proved to be one of the most promising cheap techniques, which involve chemical utilization of solar energy. TiO2 widely used in photocatalysis absorbs a narrow range of the solar spectrum compared to ZnO. In this regard, this study aimed at pr...
Mobile Ad-Hoc Networks – MANETs are prevalent in healthcare monitoring of high blood pressure, high cholesterol levels and various heart conditions and cardiac misnomers like syncope, third murmurs and atrial fibrillation. These irregularities that cause mysterious fainting, unexplained stroke, heart palpitations and atrial fibrillation need to be monitored remotely, accurately and effortlessly. However, the growth and provision of MANETs in smart healthcare monitoring has faced variou...
Information and Communication Technology (ICT) has transformed the way people conduct business today. The banking industry has not been left behind in the utilization of ICT to provide alternative banking channels. Competition for customers and customer expectations have pushed various industry players to acclimatize emerging technologies, as well as innovative alternative service delivery channels, to gain a competitive advantage in the provision of financial services beyond the tradit...
The main goal of healthcare sector worldwide is to provide quality and efficient health services to citizens. As the threat landscape on healthcare continues to escalate, many hospitals still lag behind in terms of protecting its critical infrastructure and electronic protected health information (ePHI).This research provided solution by designing a web application that will help the healthcare determine its Cybersecurity Readiness Index (CRI). The research targeted 55 respondents from 1...
The traditional techniques used by forensic investigators through the incident response operations include mostly pulling out the power cable of the suspected machines. This method normally causes a major interference of the evidence gathering process, hence the need for a better investigation method. The purpose of the study was to provide a means for the Kenya Police in evaluating their forensic adoptability in digital forensic evidence. This study was intended for those who were opera...
The need by staff and students to use smart mobile devices in university network is indisputable. This is because they help them to work and study more effectively as well as achieve better work-life balance. However smart mobile devices pose a security challenge as they continue toexpand the corporate network unchecked thus increasing the attack surface. This creates a major security burden to security professionals who are supposed to ensure that smart mobile devices’ adherence to t...
Personal Identification Systems are implemented to assist in identifying, authenticating and authorizing the right persons to the right entitlements. Criminals have however discovered ways of by-passing them in order to perpetrate identity fraud. As a result, the problem of identity fraud has become one of the fastest growing crimes in the world today, and a key facilitator of terrorism, money laundering and trafficking (of people, drugs, weapons and illicit material). In this study, an ...