Real-time movement compensation for synchronous robotic HIFU surgery

Hareendranathan, Abhilash Rakkunedeth

doi:10.32657/10356/48081

Cited by 15 publications

(25 citation statements)

References 59 publications

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“…This technology, utilizing such immobilizing agents for the bioactivation of the solution, demonstrates promising efficiency, providing a high rate of oxidation of ferrous iron. In biological leaching processes, for instance, as described in studies such as [26] Abnilash et al's "Bioreactor Leaching of Uranium from Low-Grade Indian Silicate Ore," the optimal density of the "pulp" plays a crucial role in enhancing the efficiency of uranium extraction. Maintaining the pulp density at 20-40% ensures optimal contact between microorganisms (such as the enriched culture of A. Ferrooxydans) and the ore, which enhances the rate and efficiency of leaching.…”

Section: Discussionmentioning

confidence: 99%

Development of Technology for the Bioleaching of Uranium in a Solution of Bacterial Immobilization

Shiderin,

Bektay,

Turysbekova

et al. 2024

Applied Sciences

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This study presents findings regarding the kinetics of ferrous iron oxidation in solution mediated by Acidithiobacillus ferrooxidans bacteria within a continuous-flow bioreactor employing diverse types of immobilizers. The objective is to augment the rate of ferrous iron oxidation in solutions utilizing an immobilizer for Acidithiobacillus ferrooxidans strains. Immobilization represents a promising avenue for enhancing the efficiency of Fe2⁺ oxidation via acidophilic ferrooxidizing bacteria, leading to a several-fold increase in oxidation rate. A comparative analysis was conducted to evaluate the efficacy of different types of immobilizer in facilitating iron oxidation within a continuous-flow bioreactor, including the application of wood chips coated with Fe(OH)3. The results indicate that wood chips coated with iron hydroxide serve as effective type of immobilizer, facilitating the robust attachment of Acidithiobacillus ferrooxidans via electrostatic interactions between negatively charged bacteria and positively charged surfaces. Experimental investigations were conducted using novel immobilization matrices in pilot-scale tests simulating the underground borehole leaching (UBL) of uranium. The bioactivation of leaching solutions enhances the efficiency and environmental compatibility of UBL compared to conventional chemical oxidation methods. The relationships between redox potential and ferric iron content in bioactivated solutions during the UBL of uranium were delineated. The significance of this study lies in its elucidating the pivotal role of Fe2⁺ oxidation in uranium extraction processes, particularly in the context of UBL. By employing bioactivation mediated by Acidithiobacillus ferrooxidans, the study demonstrates not only enhanced uranium extraction efficiency, but also markedly improved environmental sustainability compared to traditional chemical oxidation methods. The findings reveal crucial correlations between redox potential and ferric iron concentration in bioactivated solutions.

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Section: Discussionmentioning

confidence: 99%

Development of Technology for the Bioleaching of Uranium in a Solution of Bacterial Immobilization

Shiderin,

Bektay,

Turysbekova

et al. 2024

Applied Sciences

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“…Therefore, the kinetics of the process was evaluated with an empirical model (Equation ( 7)) which is governed by logarithmic rate law. −(ln(1 − (1 − x)) 2 = k e t (7) where x represents fraction of Au extracted in time t, and k e is the apparent rate constant.…”

Section: Kinetics Of Leachingmentioning

confidence: 99%

“…It is increasing drastically with a CAGR of 3-5% per annum, approximately thrice that of the other urban classified wastes [4]. The printed circuit board (PCB) is an attractive secondary resource within any electronic device with an interwoven metallic fraction (40 wt%) [4] and essentially with a high tenor of base, precious and critical metals compared with primary ores [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Validation of Bromide Leaching through Response Surface Methodology and Separation of Gold from Waste Printed Circuit Boards

et al. 2023

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The daily consumption of gold is increasing worldwide; however, its availability from conventional ores is reducing. Alternatively, the presence of gold in waste electrical and electronic equipment (WEEE) is nearly 100 times higher than in natural ore. Therefore, the possibility of the recovery and separation of gold from waste printed circuit boards of obsolete mobile phones is studied in the present work. Initially, the optimization of parameters for the quantitative gold leaching from metal clads of PCBs with halide salts at acidic conditions is studied through response surface methodology. Three factors (parameters), viz. temperature, time and stirring speed are altered during the experiments based on the central composite design (CCD). Leaching parameters have been optimized with the help of the second-order empirical equations and analysis of variance (ANOVA) for maximum gold dissolution. The selective recovery and separation of gold from leach liquor have been achieved with solvent extraction with an organic amide as extractant followed by cementation with zinc powder. The separated gold powder has also been analyzed with XRD and SEM-EDS to check the purity and homogeneous elemental distribution. The statistical design of experiments and separation processes for the effective recovery of gold corroborates the economic feasibility of the proposed process.

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“…4 This trend has become even more acute with the COVID-19 pandemic, where the amount of polymer-based personal protective equipment, such as masks and latex gloves, skyrocketed. 5 Plastics are usually meant for a very short life cycle and mainly for a single use. This poses a challenge for waste management.…”

Section: ■ Introductionmentioning

confidence: 99%

A Review on the Formulation and Rupture Properties of Polyethylene Terephthalate in a Mechanical Recycling Context

Marques,

Couffin,

Hajji

et al. 2024

Ind. Eng. Chem. Res.

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The environmental stress caused by climate change has provided an impetus to the search for greener solutions. A striking example of this is plastic pollution. One of the main difficulties in finding alternatives is maintaining an ecological balance along with economic viability. Other than reducing the consumption of plastics, recycling is one useful approach. In this context, polyethylene terephthalate (PET) is in the spotlight. This saturated polyester with unique properties is one of the most used plastics, and its use is increasing year by year. Plus, it is the most recycled polymer in the world. Among different recycling methods used today, the well-established equipment for mechanical recycling is the most efficient process and has a lower carbon footprint. However, despite the effort spent on recycling PET and the extensive number of published papers on this matter, many challenges still restrain its industrial development. One of the reasons for this is a lack of understanding of the structural modifications caused by processing and the effect on the properties of the final product. This Review presents an overview of PET's intrinsic properties, before and after mechanical recycling. By focusing on the mechanical process, the different degradation mechanisms and their effects are described. Widely used reinforcement techniques are explained along with their possible drawbacks. A better view of what is yet to be understood might guide new solutions for PET's processing and reuse.

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Real-time movement compensation for synchronous robotic HIFU surgery

Cited by 15 publications

References 59 publications

Development of Technology for the Bioleaching of Uranium in a Solution of Bacterial Immobilization

Development of Technology for the Bioleaching of Uranium in a Solution of Bacterial Immobilization

Validation of Bromide Leaching through Response Surface Methodology and Separation of Gold from Waste Printed Circuit Boards

A Review on the Formulation and Rupture Properties of Polyethylene Terephthalate in a Mechanical Recycling Context

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