81 research outputs found
2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
No full textIsaac Macwan (with Shrinivas Bhosale, Ashish Aphale, Miad Faezipour, Priya Bhosale, and Prabir Patra) is a contributing author Computer Assisted Detection of Liver Neoplasm (CADLN), pp.1510-1513
Effects of shape geometry in viscous streaming
No full textViscous streaming flows generated by objects of constant curvature (circular cylinders, infinite plates) have been well understood. Yet, characterization and understanding of such flows when multiple body length- scales are involved has not been looked into, in rigorous detail. We propose a simplified setting to understand and explore the effect of multiple body curvatures on streaming flows, analysing the system through the lens of bifurcation theory. Our setup consists of periodic, regular lattices of cylinders characterized by two distinct radii, so as to inject discrete curvatures into the system, which in turn affect the streaming field generated due to an oscillatory background flow. We demonstrate that our understanding based on this system can be then generalised to a variety of individual shapes presenting a spectrum of curvatures, explaining prior experimental and computational observations. Thus, this study illustrates a route towards the rational manipulation of viscous streaming flow topology, through regulated variation of object geometry.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2021-12-01The student, Yashraj Bhosale, accepted the attached license on 2019-12-10 at 18:44.The student, Yashraj Bhosale, submitted this Thesis for approval on 2019-12-10 at 18:51.This Thesis was approved for publication on 2019-12-11 at 08:50.DSpace SAF Submission Ingestion Package generated from Vireo submission #14780 on 2020-02-28 at 17:38:16Made available in DSpace on 2020-03-02T22:38:59Z (GMT). No. of bitstreams: 2
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Previous issue date: 2019-12-11Embargo set by: Seth Robbins for item 114042
Lift date: 2022-03-02T22:39:04Z
Reason: Author requested closed access (OA after 2yrs) in Vireo ETD systemLimited Restriction Lifted for Item 114042 on 2022-03-03T10:15:19Z
Retracted Article: Neomycin and gentamicin detection <i>via</i> molecular recognition with cyclam-decorated gold nanoparticles
No full textWe, the Editor and Publisher of the journal Supramolecular Chemistry, have retracted the following article: Tanuja Yeluri, Rajesh S. Bhosale, Namdev V. Ghule, Aaron M. Raynor, Sidhanath V. Bhosale & Sheshanath V. Bhosale (2015) Neomycin and gentamic in detection via molecular recognition with cyclam-decorated gold nanoparticles, Supramolecular Chemistry, 27:11-12, 772-779, DOI: 10.1080/10610278.2015.1071819 Since publication, significant concerns have been raised about the integrity of data and figures in the article. When approached for an explanation, the corresponding author did not provide the requested supporting information. RMIT University, where research had been conducted, confirm they are investigating issues related to the integrity of the published work. As verifying the validity of published work is core to the integrity of the scholarly record, we are therefore retracting the article. The institution and the corresponding author have been informed. We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions. The retracted articles will remain online to maintain the scholarly record, but they will be digitally watermarked on each page as ‘Retracted’.</p
GPU based image registration
No full textCurrently, non-rigid image registration algorithms are too time intensive to use in time-critical applications. To solve this problem, stochastic gradient descent (SGD) has been implemented in image registration. But, SGD depends on manual step size selection which is dicult and time consuming. To avoid such manual selection, SGD has been improved further by using adaptive stochastic gradient descent (ASGD) and fast adaptive stochastic gradient descent (FASGD) to select an optimal step size automatically. Although FASGD has reduced the computation time drastically, non-rigid registration still cannot be used in time critical applications. So far, a serial implementation of FASGD has been tested on CPUarchitecture in elastix toolbox. Thus, a parallel implementation of SGD can be a possible solution to this problem.The work proposed in this thesis implemented a NiftyReg toolbox extension to graphic processing units (GPUs), divided into two methods. First, NiftyReg2, a possible optimization of the current NiftyReg. Second, NiftyRegSGD, a high performance implementation of SGD on the GPU framework of NiftyReg. A novel sampling strategy, random chunk sampling is also proposed which is tailored to the GPU architecture. Random chunk sampling is an optimization to utilize memory bandwidth of GPU eectively to increase the throughput of CUDA kernels.Experiments have been performed on 3D lung CT data of 19 patients, which compared NiftyRegSGD (with and without random chunk sampler) with CPU-based elastix FASGD and NiftyReg. The registration runtime was 21.5s, 13.02s, 4.4s and 2.8s for elastix-FASGD, NiftyReg2, NiftyRegSGD without, and NiftyRegSGD with random chunk sampling, respectively, while similar accuracy was obtained. Thus, proposed GPU based non-rigid registration can be used for a time critical application with further extensions. The abstract which discusses the work done during this thesis has been accepted for publication in the medicalimaging conference of the Society of Photographic Instrumentation Engineers (SPIE).Electrical Engineering | Embedded System
Kinetics of reactive absorption of CO2 using aqueous blend of potassium carbonate, ethylaminoethanol, and N-methyl-2-Pyrollidone (APCEN solvent)
No full textEmploying the fall in the CO2 pressure method, the kinetics of the reactive absorption of CO2 in the aqueous blend of potassium carbonate, ethylaminoethanol, and N-methyl-2-Pyrollidone (APCEN solvent) is inspected by altering the amine concentration and the absorption temperature. The rate of the absorption of CO2 and the solubility/diffusivity of CO2 in the APCEN solvent is ascertained by using a stirred cell reactor. Based on the obtained experimental findings, the order of the absorption for CO2 in the APCEN solvent is estimated and understood to be of overall second order (1st order with respect to both EAE and CO2, respectively). The rate of the absorption of CO2 in the APCEN solvent is observed to be noticeably higher than the APCE solvent (aqueous potassium carbonate promoted by ethylaminoethanol) and numerous other secondary amines. For instance, at 303 K (with EAE concentration equal to 1.5 kmol m?3), the rate of the absorption of CO2 in the APCEN solvent is 18.8% higher than the APCE solvent. By studying the effect of the absorption temperature, the activation energy for the APCEN solvent is determined and viewed to be equivalent to the APCE solvent. Furthermore, the lumped parameter in case of the APCEN solvent is higher (1.41 ? 10? 6 kmol1/ 2 m?1/ 2 s? 1 kPa?1) as compared to the APCE solvent (1.2 ? 10? 6 kmol1/ 2 m?1/ 2 s? 1 kPa?1). In total, the rate of absorption of CO2 in the APCEN solvent is considerably higher than that of the APCE solvent, and other secondary amines such as methylmonoethanolamine (MMEA), propylmonoethanolamine (PMEA), and butylmonoethanolamine (BMEA). ? 2018 Taiwan Institute of Chemical EngineersThis publication was made possible by the NPRP grant ( NPRP8-370-2-154 ) from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of author(s). Furthermore, the authors gratefully acknowledge the financial support provided by University Grants Commission, Government of India. Dr. Rahul Bhosale thank Prof. V. V. Mahajani for his continuous support towards this investigation.Scopu
ABI End of Initiative - 2024 Progress Deep Dive of the rice breeding team from IRRI
No full textThe presentation summarizes the rice breeding team's efforts and progress from 2022 to 2024 through a series of questions that highlight the team's breeding achievements. It also discusses the team's successes and challenges during this period.
The full presentation is available upon request. If interested, contact the author
Synthesis and characterization of nanocrystalline CoFe2O4-zirconia via propylene oxide aided sol-gel method
No full textIn this study, a Co ferrite/ZrO2 ceramic nanomixture, with a uniform distribution of Co ferrite and ZrO2, was synthesized by the propylene-oxide-assisted sol gel method. Cobalt, iron, and zirconium nitrate salts were used as the metal precursors, and ethanol and propylene oxide were used as the solvent and gelation agent, respectively. The prepared gels were aged, dried, and annealed at different temperatures (600 1000 C) and times (1 5 h). The annealed Co ferrite/ZrO2 powder was analyzed by powder X-ray diffraction (PXRD), Brunauer Emmett Teller surface area analysis, energy-dispersive spectroscopy (EDS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The PXRD and EDS results indicated that the phase and chemical composition of the Co ferrite/ZrO2 ceramic nanomixture synthesized by the sol gel method is not affected by the annealing temperature and time. The crystallite size of the Co ferrite/ZrO2 ceramic nanomixture increased with the increase in the annealing temperature and time. In contrast, the specific surface area and pore volume decreased with the increase in the annealing temperature and time. SEM/EDS and TEM analysis confirmed the nanoparticulate morphology of the Co ferrite/ZrO2 ceramic nanomixture, with a uniform distribution of Co ferrite and ZrO2.This publication was made possible by the NPRP grants ( NPRP8-370-2-154 ) from the Qatar National Research Fund (a member of Qatar Foundation ). The statements made herein are solely the responsibility of author(s).Scopu
H2 Production via ferrite based H2O splitting cycle: Solar reactor thermodynamic efficiency analysis
No full textThis study reports the thermodynamic equilibrium and efficiency analysis of the Ba-ferrite based thermochemical water splitting cycle. Attempts were made to identify the equilibrium composition associated with the thermal reduction of Ba-ferrite using HSC Chemistry software. In addition, the equations associated to the thermodynamic efficiency analysis were developed. Copyright American Institute of Chemical Engineers.This publication was made possible by the NPRP grant (NPRP8-370-2-154) from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of author(s).Scopu
Mn-ferrite based solar thermochemical water splitting cycle: A thermodynamic evaluation
No full textBy utilizing the data obtained from the HSC Chemistry software, the thermodynamic equilibrium and efficiency analysis of the Mn-ferrite based water splitting (MFWS) cycle was conducted. All the thermodynamic calculations were performed by varying the partial pressure of O2 (PO2), thermal reduction (TH), and water splitting temperature (TL). The degree of non-stoichiometry (?) allied with the Mn-ferrite was observed to be increased as the PO2 was decreased from 10?1 to 10?5 atm and the TH was upsurged from 1500 to 2100 K. This rise in the ? resulted into a higher amount of H2 production via water splitting (WS) reaction. To achieve upper ?, elevated TH was required and hence the solar energy required to run the MFWS cycle (Q?solar-cycle) was observed to be higher. In contrast, as the TL was increased, due to the drop in the temperature gap between the TH and TL, the Q?solar-cycle was reduced. The solar-to-fuel energy conversion efficiency (?solar-to-fuel) of the MFWS cycle was observed to be maximum when the PO2 and TH were lowest and the TL was the highest. For instance, at PO2 = 10?5 atm, TH = 1500 K, and TL = 1400 K, the uppermost ?solar-to-fuel = 39.8% was attained in case of MFWS cycle which was higher than Ni-ferrite based water splitting (NFWS) cycle by 8.5%. - 2019 Elsevier LtdThis publication was made possible by the NPRP Grant ( NPRP8-370-2-154 ) from the Qatar National Research Fund (a member of Qatar Foundation). The statements made herein are solely the responsibility of author(s).Scopu
Genetic control of root architectural plasticity in maize
Get PDF© 2020 The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Experimental Biology. Root phenotypes regulate soil resource acquisition; however, their genetic control and phenotypic plasticity are poorly understood. We hypothesized that the responses of root architectural phenes to water deficit (stress plasticity) and different environments (environmental plasticity) are under genetic control and that these loci are distinct. Root architectural phenes were phenotyped in the field using a large maize association panel with and without water deficit stress for three seasons in Arizona and without water deficit stress for four seasons in South Africa. All root phenes were plastic and varied in their plastic response. We identified candidate genes associated with stress and environmental plasticity and candidate genes associated with phenes in well-watered conditions in South Africa and in well-watered and water-stress conditions in Arizona. Few candidate genes for plasticity overlapped with those for phenes expressed under each condition. Our results suggest that phenotypic plasticity is highly quantitative, and plasticity loci are distinct from loci that control phene expression in stress and non-stress, which poses a challenge for breeding programs. To make these loci more accessible to the wider research community, we developed a public online resource that will allow for further experimental validation towards understanding the genetic control underlying phenotypic plasticity
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