Article
Engineering, Chemical
Siddhi Jaiswal, Gitanjali Pradhan, Yogesh Chandra Sharma
Summary: The study synthesized a highly efficient heterogeneous catalyst Li/TiO2 for the transesterification of glycerol with DMC, achieving a maximum conversion rate of 95.5% and a selectivity of 95.9% towards glycerol carbonate. The research demonstrates Li/TiO2 as an effective catalyst for converting glycerol to glycerol carbonate.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Energy & Fuels
Gitanjali Pradhan, Yogesh Chandra Sharma
Summary: Glycerol carbonate is a trending value added chemical in various industries, with researchers focusing on its synthesis from glycerol as a by-product of biodiesel. The use of a highly efficient heterogeneous Mg/ZnO base catalyst for the transesterification of glycerol with dimethyl carbonate was successful in producing glycerol carbonate with high conversion rates.
Article
Biochemistry & Molecular Biology
Mariana Alvarez Serafini, David Gonzalez-Miranda, Gabriela Tonetto, Felix Garcia-Ochoa, Miguel Ladero
Summary: The solventless transcarbonation of glycerol with other organic carbonates driven by alkaline catalysts allows the high yield production of glycerol carbonate, which serves as an advanced humectant and monomer for diverse polycarbonates. The main operational variables affecting the transcarbonation reaction of glycerol and ethylene carbonate catalyzed by zinc stearate were studied, including catalyst concentration, reagent molar ratio, and temperature. A kinetic model was fitted to the experimental data and extended to different temperatures, revealing a bimolecular and elemental reaction mechanism with interfacial behavior.
Article
Chemistry, Applied
Boossayamas Topool, Manop Charoenchaitrakool, Kandis Sudsakorn
Summary: This study proposes a facile method to prepare an effective, low-cost, and easily prepared catalyst from wasted pineapple peels. The catalysts were prepared by calcination of dried pineapple peel powders in air at temperatures between 300-800 degrees C. The catalysts were characterized using various techniques, and it was found that the catalyst prepared at 600 degrees C showed the highest basicity and activity. Using this catalyst, the highest glycerol conversion of 92.85% and glycerol carbonate yield of 90.29% were achieved under optimal conditions.
TOPICS IN CATALYSIS
(2023)
Article
Chemistry, Physical
Piyusa P. Pattanaik, P. Mahesh Kumar, N. Raju, N. Lingaiah
Summary: The transesterification of glycerol with dimethyl carbonate to produce glycerol carbonate was studied over Fe-La mixed oxide catalysts. Catalysts with different Fe/La molar ratios were synthesized and characterized, showing that a 1:1 ratio and calcination at 550 degrees C resulted in superior activity with 71% yield of glycerol carbonate. The formation of LaFeO3 perovskite structure was found to be responsible for the high activity of the catalyst, which also exhibited unprecedented stability over 100 hours of time on stream analysis.
Article
Chemistry, Multidisciplinary
Jitpisut Poolwong, Silvano Del Gobbo, Valerio D'Elia
Summary: Catalytic transesterification of glycerol with dimethyl carbonate using perovskites and perovskite-based mixed metal oxides (PBMMOs) was explored in this study. PBMMOs prepared via non-hydrolytic sol gel method exhibited higher surface areas and stronger basic sites compared to those produced by calcination. The most basic PBMMOs (SrTiO3-200, YNbO4-200, BaCeO3-200) showed the highest catalytic activity, with SrTiO3-200 achieving quantitative conversion of glycerol to glycerol carbonate under optimized conditions.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Arpita Das, Da Shi, Gopinath Halder, Samuel Lalthazuala Rokhum
Summary: This study investigates the application of Mangifera indica peel calcined ash (MIPCA) as a heterogeneous solid base catalyst for the synthesis of glycerol carbonate (GC) by glycerol transesterification with dimethyl carbonate (DMC) under microwave irradiation. The high basicity, substantial surface area, and mesoporous nature of MIPCA contribute to efficient glycerol conversion. Moreover, the catalyst is readily available, economical, biodegradable, and environmentally friendly as it is derived from biowaste. Under optimal reaction conditions, microwave irradiation achieves high conversion (98.1 +/- 0.6%) and improved selectivity (100%). The catalyst can be reused for up to five consecutive cycles, making it crucial for glycerol to GC transesterification.
Article
Chemistry, Physical
Dengfeng Wang, Dong Bai, Jie Xiong, Zheng Chen, Xueying Zhao, Hongwei Wu, Jianfeng Shan, Shuwei Wei, Xuelan Zhang
Summary: A series of Al2O3-ZrO2-nF solid solution catalysts with adjustable acidic-basic properties were fabricated by co-precipitation method. The catalyst with F/Al=1.0 exhibited appropriate acidic-basic property and achieved quantitative and selective transformation of glycerol to glycerol carbonate with a yield of 91.2%. The uniform solid solution structure ensured excellent stability of the catalyst.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Engineering, Environmental
Adeyinka Sikiru Yusuff, Afeez Olayinka Gbadamosi, Lekan Taofeek Popoola
Summary: This study developed a new eco-friendly solid catalyst from anthill-zinc modification for methanolysis of low-grade feedstock to produce biodiesel. The optimized conditions for the reaction resulted in a high biodiesel yield of 83.16%, showing good agreement with the predicted value. The catalyst exhibited better stability after being regenerated and reused for six cycles, indicating its potential for economical biofuel production from waste products.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Gitanjali Pradhan, Siddhi Jaiswal, Yogesh C. Sharma
Summary: The study focuses on utilizing industrial waste pond ash to prepare catalysts for glycerol carbonate synthesis, with 20% Ba doped pond ash catalyst showing the highest conversion of glycerol. The synthesized catalyst was found to be environmentally benign, with optimized reaction parameters for better conversion of glycerol.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Multidisciplinary
Gundabathini Sandhya Rani, Adigopula Jyotsna, Bethala L. A. Prabhavathi Devi
Summary: This study focuses on the valorization of glycerol, a major by-product from biodiesel industry, into glycerol carbonate using a carbon-based sulfated sodium catalyst. The influence of reaction parameters on the yield and selectivity of glycerol carbonate was investigated. The results showed that under optimized conditions, high yield and selectivity of glycerol carbonate could be achieved. The catalyst could be easily recovered and reused without any pre-treatment.
Article
Chemistry, Physical
Gitanjali Pradhan, Sunita Maurya, Subhalaxmi Pradhan, Yogesh Chandra Sharma
Summary: This study summarises the catalytic transformation of glycerol-to-glycerol carbonate using MgTiO3 perovskite catalyst. The physico-chemical properties of MgTiO3 catalyst were successfully studied and it was found to possess high catalytic efficiency and stability in transesterification reaction of glycerol.
MOLECULAR CATALYSIS
(2023)
Article
Energy & Fuels
Mohd Hasbi Ab. Rahim, Nor Ain Syuhada Zuhaimi, Anisah Sajidah Saud, Venkata Rao Madduluri, Hamed Alshammari, Gaanty Pragas Maniam
Summary: A heterogeneous catalyst for glycerol carbonate synthesis was developed from red gypsum. The catalytic system showed high efficiency and stability, and it was resistant to impurities and moisture in the crude glycerol.
Article
Chemistry, Physical
He Sun, He Li, Xinyu Chang, Songsong Miao, Xiaoling Yuan, Wenxiang Zhang, Mingjun Jia
Summary: The ZnO/NCM catalyst calcined at 800 degrees Celsius, denoted as ZnO/NCM-800, exhibits the highest catalytic activity, excellent stability, and recyclability for the synthesis of ethyl methyl carbonate (EMC). The NCM support has abundant mesopores and functional groups, which facilitate the strong interaction between ZnO nanoparticles and the NCM support, resulting in a highly active and stable bifunctional catalyst for the transesterification reaction.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Shivali Arora, Vijayalakshmi Gosu, U. K. Arun Kumar, Verraboina Subbaramaiah
Summary: The present study investigated the catalytic activity of heterogeneous catalyst for transesterification of glycerol into glycerol carbonate. The study found that lithium impregnated on MCM-41 framework showed better catalytic activity, leading to an increase in the average pore diameter. The optimal conditions for glycerol carbonate yield were determined as 5% Li impregnation, calcination at 450°C, reaction temperature of 90°C for 3 hours, achieving a 93.14% yield.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Inorganic & Nuclear
A. Ganesh, T. Sivakumar, P. Venkateswari, G. Sankar, R. Venkatesh
Summary: This study focuses on the fabrication of sweet potato-derived carbon framework with nanosheet form of Co3O4 nanoparticles using the low-temperature solution grown technique. The results showed that the nanoparticles were uniformly distributed on the surface of sweet potato derived carbon frame work (SPCF). The SPCF derived Co3O4 electrodes exhibited enhanced capacitance and good cycling stability.
JOURNAL OF CLUSTER SCIENCE
(2023)
Article
Neuroimaging
Fouzi Bala, Benjamin Beland, Eva Mistry, Mohammed A. Almekhlafi, Mayank Goyal, Aravind Ganesh
Summary: Observational studies suggest that EVT is more effective in achieving return to baseline mRS compared to medical management or patients without pre-morbid disability, although at the cost of higher mortality. These findings argue against routine exclusion of patients with pre-morbid disability from EVT and warrant validation through randomized trials.
JOURNAL OF NEUROINTERVENTIONAL SURGERY
(2023)
Article
Neuroimaging
Faysal Benali, Manon Kappelhof, Johanna Ospel, Aravind Ganesh, Rosalie McDonough, Alida A. Postma, Robert-Jan Berend Goldhoorn, Charles B. L. M. Majoie, Ido van den Wijngaard, Hester F. Lingsma, Jan Albert Vos, Robert J. van Oostenbrugge, Wim H. van Zwam, Mayank Goyal
Summary: This study investigated the safety and benefit of endovascular treatment (EVT) in pre-stroke patients with modified Rankin Scale score (mRS) 3. The findings showed that patients with successful reperfusion after EVT had improved outcomes, with higher rates of returning to baseline functional state or improvement and lower mortality rates.
JOURNAL OF NEUROINTERVENTIONAL SURGERY
(2023)
Article
Clinical Neurology
Aravind Ganesh, Mayank Goyal, Alexis T. Wilson, Johanna Maria Ospel, Andrew M. Demchuk, David Mikulis, Julien Poublanc, Timo Krings, Roberta Anderson, Michael Tymianski, Michael D. Hill
Summary: Iatrogenic brain infarcts following endovascular repair of intracranial aneurysms are associated with neurologic impairment, functional status, and cognitive and neuropsychiatric outcomes in patients. Patients with infarcts exhibit worse cognitive function and neurological outcomes in the early postoperative period, and a greater number of infarcts are correlated with poorer outcomes.
Article
Clinical Neurology
Johanna Maria Ospel, Rosalie McDonough, Aravind Ganesh, Arshia Sehgal, Manon Kappelhof, Nima Kashani, Karin Klijn, Michael Hill, Jeffrey Saver, Mayank Goyal
Summary: The lack of funding in neurovascular research is a major problem, with high competitiveness, time-consuming funding processes, and excessive administrative requirements being the key obstacles to obtaining funding. Traditional funding agencies are perceived to be the most capable of closing the funding gap.
INTERVENTIONAL NEURORADIOLOGY
(2023)
Article
Mathematics, Interdisciplinary Applications
Conor J. Newton, Ayalvadi Ganesh, Henry W. J. Reeve
Summary: This paper discusses a multi-armed bandit problem involving multiple agents collaborating together. It presents a decentralised algorithm to minimize the regret of each agent in a communication-constrained setting. The theoretical analysis and empirical results show that the algorithm is asymptotically optimal.
DYNAMIC GAMES AND APPLICATIONS
(2023)
Review
Neuroimaging
Johanna M. Ospel, Adam A. Dmytriw, Robert W. Regenhardt, Aman B. Patel, Joshua A. Hirsch, Martin Kurz, Mayank Goyal, Aravind Ganesh
Summary: Triage is an important process of resource allocation based on their best utilization, need, and potential success. In time-critical conditions like acute ischemic stroke, triage aims to minimize delays and consider factors like resource availability, workflows, and geography. Teamwork is the key factor in optimizing EVT triage, involving various healthcare professionals and requiring continuous efforts and hands-on training.
JOURNAL OF NEUROINTERVENTIONAL SURGERY
(2023)
Article
Computer Science, Information Systems
P. Mathivanan, A. Balaji Ganesh
Summary: This study proposes a steganography method using ECG signals as cover data for remote health monitoring. The watermarked data is transformed into QR codes to enhance security, and the selection of coefficient positions near zero helps minimize signal degradation. The imperceptibility of the watermarked ECG signals is evaluated using various performance metrics, while the quality of extracted watermarks is assessed using the Bit Error Rate. The results show good imperceptibility and identical reconstruction to the original ECG signals.
MULTIMEDIA TOOLS AND APPLICATIONS
(2023)
Article
Anesthesiology
Evelyn Bae, Arjunan Ganesh, Alan W. Flake, Harshad G. Gurnaney
Summary: This study compares the differences in postoperative opioid use, ICU admission rate, and postoperative supplemental oxygen requirement between patients who undergo Kasai portoenterostomy with thoracic epidural analgesia and those without. The results show that patients who receive thoracic epidural analgesia have lower opioid use, lower ICU admission rate, and lower postoperative supplemental oxygen requirement.
PEDIATRIC ANESTHESIA
(2023)
Article
Clinical Neurology
Cera Cruise, Nicole Mfoafo M'Carthy, Aravind Ganesh, Bonnie Lashewicz
Summary: Despite the high proportion of stroke patients with pre-existing disabilities, they are often excluded from stroke treatment trials, leading to disparities in stroke care. Observational studies suggest that stroke therapies may be beneficial in selected patients with disabilities when success measures are framed more achievable. However, structural inequities within current stroke care systems for people with disabilities need to be addressed through an intersectional approach.
CANADIAN JOURNAL OF NEUROLOGICAL SCIENCES
(2023)
Article
Statistics & Probability
Michael Wilsher, Carl P. Dettmann, Ayalvadi J. Ganesh
Summary: This article studies the number of isolated nodes in a soft random geometric graph. The result shows that, under suitable scaling conditions, the number of isolated nodes converges in total variation to a Poisson random variable, and provides an upper bound on the probability of the random graph being connected.
STATISTICS & PROBABILITY LETTERS
(2023)
Article
Chemistry, Physical
Taymaz Tabari, Marcin Kobielusz, Agnieszka Jarosz-Duda, Dheerendra Singh, Andrzej Kotarba, Artur Blachowski, Jiaguo Yu, Wojciech Macyk
Summary: Understanding the charge transfer mechanism in the straddle heterojunction architecture is crucial for designing active materials. The synthesis and thorough study of BiVO4, La1-xSrxFeO3-delta perovskites, and BiVO4@La1-xSrxFeO3-delta straddle heterojunction architectures addressed this issue. The insertion of Sr2+ ions into A-sites increased the Fe4+ ions at B-sites, strengthening the Fe-O bond and improving electrocatalytic activity. The increased Fermi levels reduced band bending and enhanced the drift direction of photoinduced charges, leading to significantly higher photocurrent in the heterojunction architecture.
APPLIED SURFACE SCIENCE
(2023)
Proceedings Paper
Computer Science, Artificial Intelligence
S. Sumathi, A. Balaji Ganesh
Summary: This paper introduces a method for encrypting and classifying personal information, using AES and chaotic logistic mapping for signal encryption, CNN for feature extraction, and SVM for data classification. Experimental results show that the proposed method achieves significantly better classification accuracy compared to traditional algorithms.
SOFT COMPUTING FOR SECURITY APPLICATIONS, ICSCS 2022
(2023)
Meeting Abstract
Clinical Neurology
Aravind Ganesh, Benjamin Beland, Gordon Jewett, David J. T. Campbell, Malavika Varma, Ravinder Singh, Abdulaziz Al Sultan, John Wong, Bijoy Menon
Meeting Abstract
Clinical Neurology
Aravind Ganesh, Mayank Goyal, Alexis T. Wilson, Johanna M. Ospel, Andrew M. Demchuk, David Mikulis, Julien Poublanc, Timo Krings, Roberta Anderson, Michael Tymianski, Michael D. Hill
