Dr Les Bowtell

Dr Les Bowtell
NameDr Les Bowtell
Email Addressles.bowtell@unisq.edu.au
Job TitleSenior Lecturer (Electronic Engineering)
QualificationsBEng USQ, MEng USQ, PhD USQ
DepartmentSchool of Engineering
AffiliationsSchool of Surveying and Built Environment
School of Nursing and Midwifery
Centre for Agricultural Engineering
ORCIDhttps://orcid.org/0000-0001-6694-7609
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Employment

PositionOrganisationFromTo
Electrical Discipline leadUniversity of Southern Qld20062023

Expertise

renewables Ultrasound power-electronics carbon economy

Fields of Research

  • 400803. Electrical energy generation (incl. renewables, excl. photovoltaics)
  • 401103. Global and planetary environmental engineering
  • 401703. Energy generation, conversion and storage (excl. chemical and electrical)

Professional Membership

Professional MembershipYear
IEEE
BEng
USQ
1994
MEng
USQ
1999
PhD
USQ
2011

Current Supervisions

Research TitleSupervisor TypeLevel of StudyCommenced
Impact of activated carbon and biochar from wheat straw on contaminated ferrosols and performance of crop.Associate SupervisorDoctoral2023
Innovative early detection of respiratory illnesses in commercial piggeriesPrincipal SupervisorDoctoral2021
Understanding the mechanisms of Arsenic mobilisation in as-rich groundwater systems - the interaction of arsenic-carbonates in sedimentsPrincipal SupervisorDoctoral2019
Sugarcane Gasification and carbon production systemsPrincipal SupervisorDoctoral2015

Completed Supervisions

Research TitleSupervisor TypeLevel of StudyCompleted
Optimization of small-scale low-cost gasifier for on-farm applicationsAssociate SupervisorDoctoral2023
Addition of activated carbon in a cattle diet to mitigate GHG emissions and ameliorate ingested toxinsPrincipal SupervisorDoctoral2021
The effect of biochar addition on plant major nutrient uptake in hydroponic systemPrincipal SupervisorDoctoral2020
Arsenic and fluoride removal from water using bone charAssociate SupervisorDoctoral2020
Using Precision Livestock Farming (PLF) technologies to assess the impact of environmental stressors on animal welfare and production efficiency on modern dairy farmsAssociate SupervisorDoctoral2019
Treatment of agricultural run-off using innovative CDI filtration techniquesPrincipal SupervisorMasters2019
Evaluation of sonically enhanced AGMD for industrial scale water treatmentPrincipal SupervisorDoctoral2019
Development of activated carbon and composites utilizing macadamia nut shell residues for water treatmentAssociate SupervisorDoctoral2018
Thermochemical conversion of non-woody biomass: Upgrading cotton gin waste into solid fuelAssociate SupervisorDoctoral2018
Distributed static compensator (DSTATCOM) for voltage support in Single Wire Earth Return (SWER) networksAssociate SupervisorDoctoral2017

Assessment of Densified Fuel Quality Parameters: A Case Study for Wheat Straw Pellet

Nath, Bidhan, Chen, Guangnan, Bowtell, Les and Mahmood, Raid Ahmed. 2023. "Assessment of Densified Fuel Quality Parameters: A Case Study for Wheat Straw Pellet." Journal of Bioresources and Bioproducts. 8 (1), pp. 45-58. https://doi.org/10.1016/j.jobab.2022.10.001

Innovative capacitive deionization-degaussing approach for improving adsorption/desorption for macadamia nutshell biochar

Al-juboori, Raed A., Bakly, Salam, Bowtell, Les, Alkurdi, Susan S.A. and Altaee, Ali. 2022. "Innovative capacitive deionization-degaussing approach for improving adsorption/desorption for macadamia nutshell biochar." Journal of Water Process Engineering. 47. https://doi.org/10.1016/j.jwpe.2022.102786

Addition of Activated Carbon into a Cattle Diet to Mitigate GHG Emissions and Improve Production

Al-Azzawi, Mohammed, Bowtell, Les, Hancock, Kerry and Preston, Sarah. 2021. "Addition of Activated Carbon into a Cattle Diet to Mitigate GHG Emissions and Improve Production." Sustainability. 13 (15), pp. 1-17. https://doi.org/10.3390/su13158254

Inorganic arsenic species removal from water using bone char: A detailed study on adsorption kinetic and isotherm models using error functions analysis

Alkurdi, Susan S. A., Al-juboori, Raed A., Bundschuh, Jochen, Bowtell, Les and Marchuk, Alla. 2021. "Inorganic arsenic species removal from water using bone char: A detailed study on adsorption kinetic and isotherm models using error functions analysis." Journal of Hazardous Materials. 405. https://doi.org/10.1016/j.jhazmat.2020.124112

Power effect of ultrasonically vibrated spacers in air gap membrane distillation: Theoretical and experimental investigations

Al-Juboori, Raed A., Naji, Osamah, Bowtell, Les, Alpatova, Alla, Soukane, Sofiane and Ghaffour, Norreddine. 2021. "Power effect of ultrasonically vibrated spacers in air gap membrane distillation: Theoretical and experimental investigations." Separation and Purification Technology. 262, pp. 1-12. https://doi.org/10.1016/j.seppur.2021.118319

Investigation of Gas Release from Recycled Plastic Shopping Bags during Melting at Low Temperatures

Eberhard, Susette, Bowtell, Les, Lenske, Brian and Islam, Mainul. 2023. "Investigation of Gas Release from Recycled Plastic Shopping Bags during Melting at Low Temperatures." Advances in Materials Science and Engineering. 2023, pp. 1-9. https://doi.org/10.1155/2023/2378231

Biochar effects on nutrients retention and release of hydroponics growth media

Haraz, Mohammed Taha, Bowtell, Les and Al-Juboori, Raed. 2020. "Biochar effects on nutrients retention and release of hydroponics growth media." Journal of Agricultural Science. 12 (7). https://doi.org/10.5539/jas.v12n8p1

A review of measuring, assessing and mitigating heat stress in dairy cattle

Ji, Boyu, Banhazi, Thomas, Perano, Kristen, Ghahramani, Afshin, Bowtell, Les, Wang, Chaoyuan and Li, Baoming. 2020. "A review of measuring, assessing and mitigating heat stress in dairy cattle." Biosystems Engineering. 199, pp. 4-26. https://doi.org/10.1016/j.biosystemseng.2020.07.009

Modelling of heat stress in a robotic dairy farm. Part 4: Time constant and cumulative effects of heat stress

Ji, Boyu, Banhazi, Thomas, Ghahramani, Afshin, Bowtell, Les, Wang, Chaoyuan and Li, Baoming. 2020. "Modelling of heat stress in a robotic dairy farm. Part 4: Time constant and cumulative effects of heat stress." Biosystems Engineering. 199, pp. 73-82. https://doi.org/10.1016/j.biosystemseng.2020.07.014

Direct contact ultrasound for fouling control and flux enhancement in air-gap membrane distillation

Naji, Osamah, Al-juboori, Raed, Bowtell, Les, Alpatova, Alla and Ghaffour, Noreddine. 2020. "Direct contact ultrasound for fouling control and flux enhancement in air-gap membrane distillation." Ultrasonics Sonochemistry. 61, pp. 1-12. https://doi.org/10.1016/j.ultsonch.2019.104816

Effect of pyrolysis conditions on bone char characterization and its ability for arsenic and fluoride removal

Alkurdi, Susan S. A., Al-juboori, Raed A., Bundschuh, Jochen, Bowtell, Les and McKnight, Stafford. 2020. "Effect of pyrolysis conditions on bone char characterization and its ability for arsenic and fluoride removal ." Environmental Pollution. 262. https://doi.org/10.1016/j.envpol.2020.114221

Modelling of heat stress in a robotic dairy farm. Part 3: rumination and milking performance

Ji, Boyu, Banhazi, Thomas, Ghahramani, Afshin, Bowtell, Les, Wang, Chaoyuan and Li, Baoming. 2020. "Modelling of heat stress in a robotic dairy farm. Part 3: rumination and milking performance." Biosystems Engineering. 199, pp. 58-72. https://doi.org/10.1016/j.biosystemseng.2020.02.006

Modelling of heat stress in a robotic dairy farm. Part 2: identifying the specific thresholds with production factors

Ji, Boyu, Banhazi, Thomas, Ghahramani, Afshin, Bowtell, Les, Wang, Chaoyuan and Li, Baoming. 2020. "Modelling of heat stress in a robotic dairy farm. Part 2: identifying the specific thresholds with production factors." Biosystems Engineering. 199, pp. 43-57. https://doi.org/10.1016/j.biosystemseng.2019.11.005

Modelling of heat stress in a robotic dairy farm. Part 1: thermal comfort indices as the indicators of production loss

Ji, Boyu, Banhazi, Thomas, Ghahramani, Afshin, Bowtell, Les, Wang, Chaoyuan and Li, Baoming. 2020. "Modelling of heat stress in a robotic dairy farm. Part 1: thermal comfort indices as the indicators of production loss." Biosystems Engineering. 199, pp. 27-42. https://doi.org/10.1016/j.biosystemseng.2019.11.004

Macadamia Nutshell Biochar for Nitrate Removal: Effect of Biochar Preparation and Process Parameters

Bakly, Salam, Al-juboori, Raed A. and Bowtell, Les. 2019. "Macadamia Nutshell Biochar for Nitrate Removal: Effect of Biochar Preparation and Process Parameters ." C: journal of carbon research. 5 (3). https://doi.org/10.3390/c5030047

Pulsed ultrasound as an energy saving mode for ultrasound treatment of surface water with terrestrial aquatic carbon

Al-juboori, Raed A., Yusaf, Talal and Bowtell, Les. 2018. "Pulsed ultrasound as an energy saving mode for ultrasound treatment of surface water with terrestrial aquatic carbon." Desalination and Water Treatment. 135, pp. 167-176. https://doi.org/10.5004/dwt.2018.23173

Effect of air gap membrane distillation parameters on the removal of fluoride from synthetic water

Naji, Osamah, Bowtell, Les, Al-juboori, Raed A., Aravinthan, Vasantha and Ghaffour, Noreddine. 2018. "Effect of air gap membrane distillation parameters on the removal of fluoride from synthetic water." Desalination and Water Treatment. 124, pp. 11-20. https://doi.org/10.5004/dwt.2018.22694

Face-to-face instruction combined with online resources improves retention of clinical skills among undergraduate nursing students

Terry, Victoria R., Terry, Peter C., Moloney, Clint and Bowtell, Les. 2018. "Face-to-face instruction combined with online resources improves retention of clinical skills among undergraduate nursing students." Nurse Education Today. 61, pp. 15-19. https://doi.org/10.1016/j.nedt.2017.10.014

Investigation of ethanol production potential from lignocellulosic material without enzymatic hydrolysis using the ultrasound technique

Kandasamy, Manoj, Hamawand, Ihsan, Bowtell, Leslie, Seneweera, Saman, Chakrabarty, Sayan, Yusaf, Talal, Shakoor, Zaidoon, Algayyim, Sattar and Eberhard, Friederike. 2017. "Investigation of ethanol production potential from lignocellulosic material without enzymatic hydrolysis using the ultrasound technique." Energies. 10 (1), pp. 62-73. https://doi.org/10.3390/en10010062

Gasification of non-woody biomass: a literature review

Widjaya, Elita R., Chen, Guangnan, Bowtell, Les and Hills, Catherine. 2018. "Gasification of non-woody biomass: a literature review." Renewable and Sustainable Energy Reviews. 89, pp. 184-193. https://doi.org/10.1016/j.rser.2018.03.023

Energy conversion efficiency of pulsed ultrasound

Al-Juboori, Raed A., Yusaf, Talal and Bowtell, Leslie. 2015. "Energy conversion efficiency of pulsed ultrasound." The 7th International Conference on Applied Energy - ICAE2015. Abu Dhabi, United Arab Emirates 28 - 31 Mar 2015 Netherlands. Elsevier. https://doi.org/10.1016/j.egypro.2015.07.340

Investigating natural organic carbon removal and structural alteration induced by pulsed ultrasound

Al-Juboori, Raed A., Yusaf, Talal, Aravinthan, Vasantha and Bowtell, Leslie. 2016. "Investigating natural organic carbon removal and structural alteration induced by pulsed ultrasound." Science of the Total Environment. 541, pp. 1019-1030. https://doi.org/10.1016/j.scitotenv.2015.09.143

Insights into the scalability of magnetostrictive ultrasound technology for water treatment applications

Al-Juboori, Raed A., Bowtell, Leslie A., Yusaf, Talal and Aravinthan, Vasantha. 2016. "Insights into the scalability of magnetostrictive ultrasound technology for water treatment applications." Ultrasonics Sonochemistry. 28, pp. 357-366. https://doi.org/10.1016/j.ultsonch.2015.08.013

Online intravenous pump emulator: as effective as face-to-face simulation for training nursing students

Terry, Victoria R., Moloney, Clint, Bowtell, Leslie and Terry, Peter C.. 2016. "Online intravenous pump emulator: as effective as face-to-face simulation for training nursing students." Nurse Education Today. 40, pp. 198-203. https://doi.org/10.1016/j.nedt.2016.03.004

Tracking ultrasonically structural changes of natural aquatic organic carbon: chemical fractionation and spectroscopic approaches

Al-Juboori, Raed A., Yusaf, Talal, Aravinthan, Vasantha and Bowtell, Leslie. 2016. "Tracking ultrasonically structural changes of natural aquatic organic carbon: chemical fractionation and spectroscopic approaches." Chemosphere. 145, pp. 231-248. https://doi.org/10.1016/j.chemosphere.2015.11.079

Assessing the application and downstream effects of pulsed mode ultrasound as a pre-treatment for alum coagulation

Al-Juboori, Raed A., Aravinthan, Vasantha, Yusaf, Talal and Bowtell, Leslie. 2016. "Assessing the application and downstream effects of pulsed mode ultrasound as a pre-treatment for alum coagulation." Ultrasonics Sonochemistry. 31, pp. 7-19. https://doi.org/10.1016/j.ultsonch.2015.11.028

A preliminary assessment of cotton gin waste-mixture co-gasification performance

Widjaya, Elita R., Chen, Guangnan, Bowtell, Leslie and Hills, Catherine. 2015. "A preliminary assessment of cotton gin waste-mixture co-gasification performance." 2nd International Conference on Agriculture, Environment and Biological Sciences (ICAEBS'15). Bali, Indonesia 16 - 17 Aug 2015

Investigating the feasibility and the optimal location of pulsed ultrasound in surface water treatment schemes

Al-Juboori, Raed A., Yusaf, Talal, Aravinthan, Vasantha, Pittaway, Pamela A. and Bowtell, Leslie. 2016. "Investigating the feasibility and the optimal location of pulsed ultrasound in surface water treatment schemes." Desalination and Water Treatment. 57 (11), pp. 4769-4787. https://doi.org/10.1080/19443994.2014.996771

Energy characterisation of ultrasonic systems for industrial processes

Al-Juboori, Raed A., Yusaf, Talal, Bowtell, Leslie and Aravinthan, Vasantha. 2015. "Energy characterisation of ultrasonic systems for industrial processes." Ultrasonics. 57, pp. 18-30. https://doi.org/10.1016/j.ultras.2014.10.003

Improving clinical practice outcomes for nurses with an interactive emulator

Bowtell, Les, Kist, Alexander A., Osbourne, Daniel and Parker, Victoria. 2013. "Improving clinical practice outcomes for nurses with an interactive emulator." 2013 IEEE Global Engineering Education Conference (EDUCON). Berlin, Germany 13 - 15 Mar 2013 United States. https://doi.org/10.1109/EduCon.2013.6530246

Student focus groups

Gibbings, Peter and Bowtell, Les. 2013. "Student focus groups." Lemckert, Charles, Jenkins, Graham and Lang-Lemckert, Susan (ed.) 24th Annual Conference of the Australasian Association for Engineering Education (AAEE 2013). Gold Coast, Australia 08 - 11 Dec 2013 Brisbane, Australia.

Interactive emulator system to aid clinical practice outcomes for nurses

Bowtell, Les, Kist, Alexander A., Osbourne, Daniel and Parker, Victoria R.. 2013. "Interactive emulator system to aid clinical practice outcomes for nurses." International Journal of Online Engineering. 9 (S5), pp. 32-37. https://doi.org/10.3991/ijoe.v9iS5.2771

Enhancing nursing education with remote access laboratories

Bowtell, Les, Moloney, Clint, Kist, Alexander A., Parker, Victoria, Maxwell, Andrew and Reedy, Natasha. 2012. "Enhancing nursing education with remote access laboratories." International Journal of Online Engineering. 8 (Special Issue), pp. 52-59. https://doi.org/10.3991/ijoe.v8iS4.2279

Using remote access laboratories in nursing education

Bowtell, Les, Moloney, Clint, Kist, Alexander A., Parker, Victoria, Maxwell, Andrew and Reedy, Natasha. 2012. "Using remote access laboratories in nursing education." 9th International Conference on Remote Engineering and Virtual Instrumentation (REV 2012). Bilbao, Spain 04 - 06 Jun 2012 Piscataway, NJ. United States. https://doi.org/10.1109/REV.2012.6293148

Power quality and efficiency improvements for transformerless grid connected PV inverters

Bowtell, Leslie. 2010. Power quality and efficiency improvements for transformerless grid connected PV inverters. PhD Thesis Doctor of Philosophy. University of Southern Queensland.

Comparison between unipolar and bipolar single phase grid-connected inverters for PV applications

Bowtell, Les and Ahfock, Tony. 2007. "Comparison between unipolar and bipolar single phase grid-connected inverters for PV applications." AUPEC 2007: 17th Australasian Universities Power Engineering Conference. Perth, Australia 09 - 12 Dec 2007 Australia. https://doi.org/10.1109/AUPEC.2007.4548098

Dynamic analysis of a DC offset controller for grid-connected inverters

Bowtell, L. A. and Ahfock, A. L.. 2010. "Dynamic analysis of a DC offset controller for grid-connected inverters." Duke, Richard (ed.) AUPEC 2010: Power Quality for the 21st Century. Christchurch, New Zealand 05 - 08 Dec 2010 United States.

Direct current offset controller for transformerless single-phase photovoltaic grid-connected inverters

Bowtell, L. and Ahfock, A.. 2010. "Direct current offset controller for transformerless single-phase photovoltaic grid-connected inverters." IET Renewable Power Generation. 4 (5), pp. 428-437. https://doi.org/10.1049/iet-rpg.2009.0043

DC offset elimination in a single-phase grid-connected photovoltaic system

Ahfock, Tony L. and Bowtell, Leslie. 2006. "DC offset elimination in a single-phase grid-connected photovoltaic system." AUPEC 2006: 16th Australasian Universities Power Engineering Conference. Melbourne, Australia 10 - 13 Dec 2006 Melbourne, Australia.

Kinetic mechanism of wheat straw pellets combustion process with a thermogravimetric analyser

Nath, Bidhan, Chen, Guangnan, Bowtell, Les and Graham, Elizabeth. 2023. "Kinetic mechanism of wheat straw pellets combustion process with a thermogravimetric analyser." Heliyon. 9 (10). https://doi.org/10.1016/j.heliyon.2023.e20602