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Integrated Lens Microstrip-Slot Applicator for Breast Hyperthermia Procedure
Kasumawati Lias,
Hazrul Mohamed Basri,
Wong Vei Ling,
Kuryati Kipli,
Wan Azlan Wan Zainal Abidin
Issue:
Volume 6, Issue 1, June 2022
Pages:
1-6
Received:
21 June 2021
Accepted:
29 June 2021
Published:
9 February 2022
DOI:
10.11648/j.ae.20220601.11
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Abstract: Hyperthermia is an alternative procedure for cancer treatment. It has potential either used alone or adjuvant with other conventional procedures such as chemotherapy and radiotherapy to enhance the capability of chemotherapy drugs and the radiation intensity, respectively. However, since the success rate is still not significant, the requirements in improving the limitations for this alternative procedure are massively carried out. Therefore, in this paper, it is emphasised to improve the main deficiency of this hyperthermia treatment, which is focus position distance in order to reduce the possible adverse health effects due to the treatment by reducing the area of unwanted hot spots on surrounding healthy tissue. A simulation with SEMCAD X is utilised to obtain heat distribution on the treated tissue. Various rectangular microstrip-slot applicators have been modified and developed with SEMCAD X, where it is used to provide heat towards the treated tissue at a certain period of time and hyperthermia specific temperature. The outcomes showed the modified microstrip-slot with a Y shape is able to penetrate up to 80 mm with sufficient focus position distance. Finally, a water bolus is introduced to produce a cooling impact on the treated tissue, which also alters the effective field size (EFS) of heat dispersion.
Abstract: Hyperthermia is an alternative procedure for cancer treatment. It has potential either used alone or adjuvant with other conventional procedures such as chemotherapy and radiotherapy to enhance the capability of chemotherapy drugs and the radiation intensity, respectively. However, since the success rate is still not significant, the requirements i...
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Numerical Study of the Effects of Unsteadiness on (MHD) Bioconvection of Nanofluids over a Stretching Sheet
Falana Ayodeji,
Adeboje Taiwo Bode
Issue:
Volume 6, Issue 1, June 2022
Pages:
7-12
Received:
16 February 2022
Accepted:
25 March 2022
Published:
31 March 2022
DOI:
10.11648/j.ae.20220601.12
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Abstract: Numerical solution of unsteady Mangneto Hydrodynamic (MHD) bioconvection of a nanofluid past over a stretching sheet wasinvestigated. Thegoverning nonlinear partia ldifferential equations (peds) of the flow are transformed into a system of coupled nonlinear ordinary differential equations (odes) using similarity transformations. These coupled ordinary differential equations are solved using fourth order Runge Kutta -Fehlberg integration method along with shooting technique. The effects of unsteadiness, Darcy number and magneticparameters were analyzed. It is found that the Skin friction, the reduced Nusselt number and the density of local microorganisms depend on the above parameters. It is equally found that as the darcy number increases the Skin friction reduces and inncrease in unsteadiness parameter reduces the Skin friction. Increase in the unsteadiness parameter reduces the density of local microorganism profile. Furthermore, increase in magnetic parameter increases the velocity. It is also observed that as the Nusselt number increases the temperature reduces. The present numerical results are compared with previously published results and are found to be in good agreement. Other results are presented graphally and in tables.
Abstract: Numerical solution of unsteady Mangneto Hydrodynamic (MHD) bioconvection of a nanofluid past over a stretching sheet wasinvestigated. Thegoverning nonlinear partia ldifferential equations (peds) of the flow are transformed into a system of coupled nonlinear ordinary differential equations (odes) using similarity transformations. These coupled ordin...
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Numerical Algorithm for One and Two-Step Hybrid Block Methods for the Solution of First Order Initial Value Problems in Ordinary Differential Equations
Ononogbo Chibuike Benjamin,
Airemen Ikhuoria Edward,
Ezurike Ugochi Julia
Issue:
Volume 6, Issue 1, June 2022
Pages:
13-23
Received:
3 May 2022
Accepted:
20 May 2022
Published:
16 June 2022
DOI:
10.11648/j.ae.20220601.13
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Abstract: In this paper, we developed a numerical Algorithm for one and two-step hybrid block methods for the numerical solution of first order initial value problems in ordinary differential equations using method of collocation and interpolation of Taylor’s series as approximate solution to give a system of non linear equations which was solved to give a hybrid block method. To further justify the usability and effectiveness of this new hybrid block method, the basic properties of the hybrid block scheme was investigated and found to be zero-stable, consistent and convergent. The derived scheme was tested on some numerical examples and was found to give better approximation than the existing methods. The errors displayed after solving some selected initial value problems, revealed that, it is better to increase L (Derivative) rather than the step length k as shown in our numerical results. Also, It was difficult to satisfy the zero-stability for larger k. In addition, the new method converges faster with lesser time of computation, which address the setback associated with other methods in the literature. Finally, the new method has order of accuracy for one-step as order Ten while order Eighteen for two-step.
Abstract: In this paper, we developed a numerical Algorithm for one and two-step hybrid block methods for the numerical solution of first order initial value problems in ordinary differential equations using method of collocation and interpolation of Taylor’s series as approximate solution to give a system of non linear equations which was solved to give a h...
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Design of Construction Management System of Rotary Drilling Pile Based on BIM
Gu Wentian,
Qi Ziwei,
Xiao Wenhai
Issue:
Volume 6, Issue 1, June 2022
Pages:
24-29
Received:
19 May 2022
Accepted:
9 June 2022
Published:
21 June 2022
DOI:
10.11648/j.ae.20220601.14
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Abstract: Pile foundation engineering was a hidden work, it includes three processes: mechanical hole forming, reinforcement cage fabrication and installation, concrete pouring. Pile foundation construction was characterized by great difficulty in process management and high cost of remedy in case of quality problems. Besides, due to the uncertainty of the site stratum, it was difficult to accurately and timely feed back the final hole depth into the rock, and mechanical hole forming cannot create favorable conditions for subsequent processes. Rotary drilling pile has the advantages of high efficiency, good safety and strong stratum applicability, which was widely used in pile foundation construction. In order to improve the construction efficiency and information management level of pile foundation engineering, a set of rotary drilling pile construction management system was developed. The system was based on the key points of pile foundation engineering management to monitor the positioning, hole depth and drilling rate, verticality, current, noise and other parameters respectively. It uses 3D geology and BIM to display the relationship between hole depth and stratum in real time, otherwise it applies the multivariate data of monitoring to realize automatic rock-socketed judgment. The system could comprehensively monitor and manage the construction process information of rotary drilling pile, dynamically correct the potential quality problems in the process, which effectively reduces the difficulty of process management and saves construction time.
Abstract: Pile foundation engineering was a hidden work, it includes three processes: mechanical hole forming, reinforcement cage fabrication and installation, concrete pouring. Pile foundation construction was characterized by great difficulty in process management and high cost of remedy in case of quality problems. Besides, due to the uncertainty of the s...
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