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Mathematical Modelling to Simulate Biological Fluid Flow in a Collapsible Tube
Muhammad Zeeshan Ashraf,
Muhamad Riaz Khan,
Shahzad Waheed,
Muhammad Ahsan,
Saira Hussnain
Issue:
Volume 6, Issue 1, March 2018
Pages:
1-6
Received:
26 December 2017
Accepted:
11 January 2018
Published:
29 January 2018
Abstract: The purpose of this paper is to advance a mathematical model for reviewing to simulate biological flows such as blood flow in arteries or veins, flow of urine in urethras and air flow in the bronchial airways. They can also be used to study and prediction of many diseases, as the lung disease (asthma and emphysema), or the cardiovascular diseases (heart stroke), Makinde (2005). In this work, laminar flow of an incompressible viscous fluid through a collapsible tube of circular cross section is considered. Collapsible tubes are easily deformed by negative transmural pressure owing to marked reduction of rigidity. Thus, they show a considerable nonlinearity and reveal various complicated phenomena Our objectives are to study the effect of temperature along the tube as the fluid Prandtl number and Reynolds number increases. We launch the mathematical formulation of the problem. The problem is solved by using power series and perturbation techniques with help of boundary conditions and results are displayed graphically for different flow characteristics, velocity profile.
Abstract: The purpose of this paper is to advance a mathematical model for reviewing to simulate biological flows such as blood flow in arteries or veins, flow of urine in urethras and air flow in the bronchial airways. They can also be used to study and prediction of many diseases, as the lung disease (asthma and emphysema), or the cardiovascular diseases (...
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New Trends to Improve the Raw Materials of Automotive Parts/Spare Parts
Mahmoud Mohamed Ahmed Sayed
Issue:
Volume 6, Issue 1, March 2018
Pages:
7-11
Received:
28 December 2017
Accepted:
17 January 2018
Published:
7 February 2018
Abstract: The automotive industry is one of the important industries which affected by raw materials of parts/spare parts. This work is applied research on the automotive products, such as main parts, and spare parts. The automotive products meet lot of problems, which come from certain causes such as environmental conditions. This work faces these problems and solves it, by taking some actions. Selecting raw materials which represent main causes of the problems and treatment it. This work uses analytical tool (Root – Cause Effect) to find out the root causes. Also, this work used new trends to improve the performance of raw material which uses in manufacturing of products such chemical treatment.
Abstract: The automotive industry is one of the important industries which affected by raw materials of parts/spare parts. This work is applied research on the automotive products, such as main parts, and spare parts. The automotive products meet lot of problems, which come from certain causes such as environmental conditions. This work faces these problems ...
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Effects of Steeping Temperature and Time on the Parboiling Efficiency and the Milling Quality of the Parboiled Paddy Rice
Unuigbe Odion Michael,
Izuagie Festus Iwarhue,
Olawepo Babatunde Bamidele
Issue:
Volume 6, Issue 1, March 2018
Pages:
12-16
Received:
27 December 2017
Accepted:
10 January 2018
Published:
26 February 2018
Abstract: Paddy rice Parboiling is a major processing operation in rice processing. In this study, the effects of steeping temperature and time on the parboiling efficiency and the milling quality of the parboiled paddy rice was determined in the department of agricultural and bio-environmental engineering department was evaluated. During the investigation, the experiment was considered as a 4×3×3 factorial design, with four levels of steeping temperature (60, 65, 70 and 75°C), three levels of steeping time (2, 3 and 4 hours) and three replications in a Randomized Complete Block Design (RCBD) with steeping time as the blocking factor in order to determine the parboiling efficiency of the machine and milling quality of the parboiled rice grains. The optimum parboiling efficiency of 99.7% and corresponding milling quality of 98.5% was obtained at 70°C steeping temperature and 3hours steeping time. The data obtained was statically analyzed using SPSS 21.0 software and the result of the analysis shows that the steeping temperature and time has a significant effect on the parboiling efficiency of the machine and the milling quality of the rice grains at 5% confidence level.
Abstract: Paddy rice Parboiling is a major processing operation in rice processing. In this study, the effects of steeping temperature and time on the parboiling efficiency and the milling quality of the parboiled paddy rice was determined in the department of agricultural and bio-environmental engineering department was evaluated. During the investigation, ...
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Electroelastic Actuator Nano- and Microdisplacement for Precision Mechanics
Sergey Mikhailovich Afonin
Issue:
Volume 6, Issue 1, March 2018
Pages:
17-22
Received:
28 December 2017
Accepted:
29 January 2018
Published:
6 March 2018
Abstract: In the present work the structural-parametric model of the piezoactuator is determined in contrast electrical equivalent circuit types Cady or Mason for the calculation of the piezoelectric transmitter and receiver, the vibration piezoactuator and the vibration piezomotor with the mechanical parameters in form the velosity and the pressure. The aim of this work is to obtain the structural-parametric model of the electroelastic actuator with the mechanical parameters the displacement and the force. The method of mathematical physics is used. Structural scheme of electroelastic actuator for nanotechnology is obtained. The transfer functions of the actuators are determined. For calculations control systems for nanotechnology with piezoactuator the structural scheme and the transfer functions of piezoactuator are obtained. The generalized structural-parametric model, the generalized structural scheme, the generalized matrix equation for the electroelastic actuator nano- and microdisplacement are obtained in the matrix form. The deformations of the electroelastic actuator for the precision mechanics are described by the matrix equation.
Abstract: In the present work the structural-parametric model of the piezoactuator is determined in contrast electrical equivalent circuit types Cady or Mason for the calculation of the piezoelectric transmitter and receiver, the vibration piezoactuator and the vibration piezomotor with the mechanical parameters in form the velosity and the pressure. The aim...
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Determination of Absorbed Dose Results from Radioactive Waste Sampling and Assay
Saad Mohammed Abd,
Taha Yaseen Mansoor,
Hussein Saady Al-Daffaie
Issue:
Volume 6, Issue 1, March 2018
Pages:
23-26
Received:
29 December 2017
Accepted:
5 March 2018
Published:
23 March 2018
Abstract: There has been great concern about the health risks associated with exposure to radioactivity present in soil, thus in this present study, absorbed dose rate measurements were carried out at some selected samples of contaminated soil. The purpose is to examine to what extent such measurements can be used to delineate the effect radiation to the workers and to assess the radiation risk of radioactive waste management personnel by calculating the annual dose of external radiation exposure and the amount of radioactive dose absorbed by the workers. Ladlum detector used to measure the exposure dose rate (µR/h). The germanium system was used to analyze the samples collected from the decontamination processes, the activity concentration ranged from (1026.21 to 25961.5) Bq/kg. The value of the annual dos rate vary between (5.55E-05 to.40E-03) Sv/h.
Abstract: There has been great concern about the health risks associated with exposure to radioactivity present in soil, thus in this present study, absorbed dose rate measurements were carried out at some selected samples of contaminated soil. The purpose is to examine to what extent such measurements can be used to delineate the effect radiation to the wor...
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