Basic Science EngineeringCopyright (c) 2021 The British University in Egypt All rights reserved.
https://buescholar.bue.edu.eg/basic_sci_eng
Recent documents in Basic Science Engineeringen-usWed, 30 Jun 2021 03:12:30 PDT3600Statistic Equation To Estimate The Amount Of Co2 Emission Produced From High Traffic Density Roads
https://buescholar.bue.edu.eg/basic_sci_eng/12
https://buescholar.bue.edu.eg/basic_sci_eng/12Mon, 28 Jun 2021 11:28:15 PDT
Energy consumption, especially the energy used for electricity supply has doubled in the past three decades, causing a drastic increase in the carbon emissions produced. Between 1990 and 2005 globally, the amount of CO2 emissions increased 25%. It is estimated that vehicles produce approximately 30% of the global NOx and 14% of global CO2 emissions. Egypt is the fourteenth biggest wellspring of CO2 emissions among all GEF program nations. It was proven that 66% of CO2 emissions comes from fossil fuel as a primary energy consuming source, playing a key role in the overall carbon intensity. The problem of this research is that the roads in developing countries produce a high level of carbon emissions, and the level is increasing due to the heavy usage of fossil fuels in the transportation sector. This research presents statistical analysis equation to analyse the amount of CO2 emissions produced from roads without using heavy and expensive equipment’s. Moreover, the equation can be used as a tool to estimate the amount of CO2 emissions produced from roads during the design phase in order to improve the design and reduce carbon emissions in roads. According to the statistics the main factors affecting the amount of CO2 produced in roads are the electricity generations, types of vehicles and vehicles speed. The research used experimental method to validate the equation by measuring CO2 emissions in high traffic density road using measuring device and compared the measuring results with the statistic equation results. The presented equation should help in reducing the amount of CO2 produced in roads, in return it will help in reducing the growth of global problems such as climate change and ozone depletion.
]]>
Rania Moussa et al.The Efficacy Measurement Of Treatment Methods: An Application To Stress-Strength Model
https://buescholar.bue.edu.eg/basic_sci_eng/7
https://buescholar.bue.edu.eg/basic_sci_eng/7Mon, 28 Jun 2021 11:28:13 PDT
This paper addresses how to use a statistical model to compare two different treatment methods for cystic fibrosis disease. The stress-strength model is used in a parametric form to compare the efficacy of the two treatment methods. Since the available data in most clinical situations are censored, the stress-strength model is investigated in presence of progressively Type II censored data. The kumaraswamy exponential (Kw-E) distribution is used as a parametirc form for the stress-strength model. The statistical inference of the stress-strength reliability R = P[Y < X] is performed when X and Y are independent random variables and follow the Kw-E distribution.
]]>
Mahmoud Mansour et al.Non-Parametric Statistical Test For Testing Exponentiality With Applications In Medical Research
https://buescholar.bue.edu.eg/basic_sci_eng/11
https://buescholar.bue.edu.eg/basic_sci_eng/11Mon, 28 Jun 2021 11:28:13 PDT
The aim of designing the non-parametric statistical test in this paper is to assess some treatment methods by studying the failure behavior of the observed survival data. A treatment method represents the application of different healthcare interventions for the cure or reduction of disease-related symptoms. The survival times of patients are registered after applying the proposed treatment method. The behavior of the observed data in this paper is assumed to enjoy an increasing failure rate or constant failure rate (exponential case) property. If the survival data have increasing failure rate property, then the proposed treatment method is useless (has negative influence on patients) and another method should be recommended, while if the collected data have exponential property, then the proposed treatment method has no positive or negative influence on patients. To guarantee a right assessment using the proposed statistical test, its efficiency and power are calculated and compared with other tests. The proposed statistical test is applied in case of some cancer treatments.
]]>
Mahmoud MansourThe Kinetic Study of DPT using Mathematica as an Efficient Optimization Tool
https://buescholar.bue.edu.eg/basic_sci_eng/6
https://buescholar.bue.edu.eg/basic_sci_eng/6Sat, 01 May 2021 15:35:06 PDT
Mathematica is an efficient and optimized tool for computing numeric and algebraic calculations as well as graphing two and three dimensional curves and surfaces. It is used in several aspects of science including physics, engineering, chemistry and even biology due to the impact of mathematics with almost the fields of science nowadays. Synthesis of Cyclotetramethylene Tetramine through the action of nitrating mixture formed of ammonium nitrate and fuming nitric acid on hexamine in presence of acetic acid, acetic anhydride and p-formaldehyde has been proven. DPT was prepared at different temperatures. The variation of some factors like: temperature and time has been investigated. The obtained results were reliable and consistent with the literature. The conversion of Hexamine Dinitrate to HMX as another synthetic route was not fully studied from the point of view of kinetics. In this paper, it is intended to study the effect of time and temperature on the conversion rate of hexamine dinitrate to DPT. This scientific approach is considered as a bridge through which we aim to initiate a complete kinetic study of an important intermediate in the synthesis route of one of the most powerful energetic materials. We report here, optimizing the kinetic data for the synthesis of DPT via using Mathematica.
]]>
Marwa Eldewaik et al.Haar Wavelet Solution of Poisson’s Equation and Their Block Structures
https://buescholar.bue.edu.eg/basic_sci_eng/3
https://buescholar.bue.edu.eg/basic_sci_eng/3Sat, 01 May 2021 15:20:04 PDT
The structure of the algebraic system which results from the use of Haar wavelet when solving Poisson’s equation is studied. Haar wavelet technique is used to solve Poisson’s equation on a unit square domain. The form of collocation points are used at the mid points of the subintervals i.e at the odd multiple of the sub interval length labeling. It is proved that the coefficient matrix has symmetric block structure. Comparison with the tridagonal block structure obtained by the finite difference with the natural ordering is introduced. The numerical results have illustrated the superiority of the use of Haar wavelet technique. The matrices obtained can be used for any equations containing the Laplace operator.
]]>
The British University in Egypt et al.Solving Poisson’s Equations with Fractional Order Using Haar Wavelet
https://buescholar.bue.edu.eg/basic_sci_eng/2
https://buescholar.bue.edu.eg/basic_sci_eng/2Sat, 01 May 2021 15:15:04 PDT
The algebraic structure of the linear system appears in solving fractional order Poisson’s equation by Haar wavelet collocation approach is considered. The fractional derivative is described in the Caputo sense. Comparison with the classical integer case as a limiting process is illustrated. Numerical comparison is made between the solution using the Haar wavelet method and the finite difference method. The results confirms the accuracy for the Haar wavelet method.
]]>
The British University in Egypt et al.Gamma Radiation and Neutron Shielding Properties of Transparent Alkali Borosilicate Glass Containing Lead
https://buescholar.bue.edu.eg/basic_sci_eng/1
https://buescholar.bue.edu.eg/basic_sci_eng/1Tue, 04 Aug 2020 10:10:08 PDT
In this study, lithium sodium borosilicate glasses with chemical compositions of xPbO-40B_{2}O_{3}25Na_{2}O5Li_{2}O-(30 - x)SiO_{2} (where x = 0, 5, 10, 15, 20, and 25 mol%) were prepared by using the conventional melt-quenching technique. The amorphous nature and the effects of Pb+2 ions in the glass structure were explored by using X-ray diffraction and Fourier transform infrared spectroscopy analyses, respectively. The gamma radiation and neutron shielding properties of the glass system were investigated by determining the mass attenuation coefficients, half value layer, gamma-ray exposure build-up factor (EBF), and fast neutron removal cross section. The EBFs were calculated using the general progressive fitting parameter formula for photon energies of 0.015–15 MeV to penetration depths of 40 mfp. The effective atomic number (Z_{eff}) and electron density (N_{eff}) were determined for all of the prepared glasses. For validation purposes, the experimental values of the mass attenuation coefficient, half value layer, Z_{eff}, and N_{eff} for all of the prepared glasses at 0.239, 0.662, 0.911, and 1.332 MeV were compared with their theoretical values. The fast neutron removal cross sections of the prepared glasses ranged from 0.0890 to 0.1375 cm^{−1}, which corresponded to concentrations of 0–25 PbO mol%. The results confirmed that the glasses prepared with lead concentrations of 5–25 PbO mol% have suitable and comparable gamma attenuation coefficients for use as efficient transparent gamma ray and neutron shielding materials.
]]>
Elsayed Salama et al.