MARC details
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| fixed length control field |
05104ntm a2200373 i 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MY-KuUP |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20251125110738.0 |
| 006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL CHARACTERISTICS |
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t||||fr|||| 000 0 |
| 007 - PHYSICAL DESCRIPTION FIXED FIELD--GENERAL INFORMATION |
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ta |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
230516t20232023my a|||fr|||| 000 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER |
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| International Standard Book Number |
THE0009624 (Local) |
| Qualifying information |
Hardback |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
UMP |
| Language of cataloging |
eng |
| Transcribing agency |
UMP |
| Description conventions |
rda |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
FTKMA .N35 2023 r Thesis |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Najihah Mohd Ali, |
| Relator term |
author. |
| 245 10 - TITLE STATEMENT |
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| Title |
Effects of encapsulation and boundary proximity on the dynamical response of microbubbles in ultrasonic fields / |
| Statement of responsibility, etc. |
Najihah Binti Mohd Ali |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Place of production, publication, distribution, manufacture |
Kuantan, Pahang : |
| Name of producer, publisher, distributor, manufacturer |
UMP, |
| Date of production, publication, distribution, manufacture, or copyright notice |
2023 |
| 264 #1 - PRODUCTION, PUBLICATION, DISTRIBUTION, MANUFACTURE, AND COPYRIGHT NOTICE |
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| Date of production, publication, distribution, manufacture, or copyright notice |
© 2023 |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xiv, 121 pages : |
| Other physical details |
illustrations (some color) ; |
| Dimensions |
30 cm. + |
| Accompanying material |
1 CD-ROM |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| Content type term |
text |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
unmediated |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| Media type term |
computer |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
volume |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| Carrier type term |
computer disc |
| 347 ## - DIGITAL FILE CHARACTERISTICS |
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| Source |
rda |
| File type |
text file |
| Encoding format |
PDF |
| 500 ## - GENERAL NOTE |
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| General note |
Faculty of Mechanical and Automotive Engineering Technology |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
Thesis (Master of Science) -- Universiti Malaysia Pahang – 2023 |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographical references |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Microbubbles are currently used as ultrasound contrast agents, but they also have the potential to be used for diagnostic imaging and therapeutic delivery such as drug delivery, gene therapy, molecular imaging, anti-cancer therapy, and atherosclerotic therapy. However, the transition from using microbubbles as ultrasound contrast agents to applications in the biomedical field requires more in-depth understanding. Nevertheless, experimental studies in recent years have shown that the boundary has a substantial effect on microbubble oscillation. In reality, the possible clinical applications of microbubbles necessitate that they be kept close to the vessel wall at all times, effectively near a boundary. Since the interaction between ultrasound and microbubble oscillation is nonlinear, any changes in parameters or conditions can cause the bubble dynamics to change. Moreover, of particular importance is the influence of microbubble encapsulation near the boundary on overall dynamic behaviour as the bubble is stabilised. However, many bubble studies have not considered shell encapsulation. In order to effectively manipulate and monitor microbubble oscillation, it is necessary to understand how the boundary and encapsulating shell affect microbubble vibration. Therefore, this research aims to determine the effects of boundary proximity on the gas microbubble dynamic response in an ultrasonic field. The second objective of this research is to investigate the effects of shell-encapsulated microbubbles and neighbouring microbubbles near the boundary in an ultrasonic field. To achieve the research objectives, theoretical models were modified. The equations of the models were modified to elucidate the influence of the boundary on the oscillating microbubble, and the influence of shell-encapsulated microbubbles and neighbouring microbubbles. These models were subjected to a set of ultrasound parameters observed in clinical studies. The dynamics of the microbubble near a boundary in an ultrasonic field was determined by numerically solving the governing equations for microbubble oscillation. The distances between the microbubble were varied along with driving frequency. The microbubble oscillation was studied in terms of time response, bifurcation diagrams, and maximum radial expansion. The chaos theory of dynamical microbubble is employed to visualise the parameter dependence of the bubble dynamics through bifurcation diagrams. This is because, dynamical response of a microbubble subjected to ultrasound is a complex chaotic dynamic system. The results showed that the microbubble oscillation became increasingly irregular as the driving pressure amplitude was increased, while the maximum amplitude of oscillation was found to decrease with increasing ultrasound frequency. Also, the boundary was found to suppress the bubble oscillations, causing an increase in the orderly periodic solutions, and reducing the maximum radial expansion. The increase in distance between the boundary and the encapsulated bubble also increased the oscillation amplitude. When the value of the pressure amplitude increased, the single bubble was more likely to exhibit chaotic behaviour. Besides, the maximum radius also increased as the inter-wall-bubble distance was gradually increased. Meanwhile, with higher driving frequency, the maximum radial expansion decreased and suppressed chaotic behaviour. The results also suggest that the presence of the boundary shifted the transition from orderly to chaotic, with it occurring at a lower control parameter value of the incident ultrasound. In addition, the combined influence of boundary proximity and ultrasound parameters caused a shift in the fundamental frequency of the bubbles. |
| 610 20 - SUBJECT ADDED ENTRY--CORPORATE NAME |
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| Corporate name or jurisdiction name as entry element |
Faculty of Mechanical and Automotive Engineering Technology |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Universities and colleges |
| General subdivision |
Dissertations |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Theses |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Restricted Collection |