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Managerial perspectives of scaling up robotic-assisted surgery in healthcare systems:A systematic literature review

Laparoscopic, Endoscopic and Robotic Surgery 2024年第3期7卷 113-122页

作者： ravichandran anitha Komattu Chacko John Gnanadhas Jabarethina Sri Ramachandra Faculty of Management Sciences Sri Ramachandra Institute of Higher Education and Research(Category-I Deemed to be University)ChennaiIndia

Objectives Robotic-assisted surgery(RAS)is a minimally invasive technique practiced in multiple *** training is essential for the acquisition of RAS *** cost of RAS is considered to be high,which makes it a burden for institutes and unaffordable for *** systematic literature review(SLR)focused on the various RAS training methods applied in different surgical specialties,as well as the cost elements of RAS,and was to summarize the opportunities and challenges associated with scaling up *** An SLR was carried out based on the Preferred Reporting Items for Systematic reviews and Meta-Analyses reporting *** PubMed,EBSCO,and Scopus databases were searched for reports from January 2018 through January ***-text reviews and research articles in the English language from Asia-Pacific countries were *** that outlined training and costs associated with RAS were *** The most common training system is the da Vinci *** simulation technique,which includes dry-lab,wet-lab,and virtual reality training,was found to be a common and important *** cost of RAS encompasses the installation and maintenance costs of the robotic system,the operation theatre rent,personnel cost,surgical instrument and material cost,and other miscellaneous *** synthesis of SLR revealed the challenges and opportunities regarding RAS training and *** The results of this SLR will help stakeholders such as decision-makers,influencers,and end users of RAS to understand the significance of training and cost in scaling up RAS from a managerial *** any healthcare innovation to reach a vast population,cost-effectiveness and standard training are crucial.

关键词： da Vinci system Healthcare Robotic-assisted surgery Robotic surgery Robotic training Robotic surgery cost

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An Evidence-Based CoCoSo Framework with Double Hierarchy Linguistic Data for Viable Selection of Hydrogen Storage Methods

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Computer Modeling in Engineering & Sciences 2024年第3期138卷 2845-2872页

作者： Raghunathan Krishankumar Dhruva Sundararajan K.S.ravichandran Edmundas Kazimieras Zavadskas Information Technology Systems and Analytics Area Indian Institute of Management Bodh GayaBodh GayaBihar824234India Department of Mathematics Amrita School of Physical SciencesAmrita Vishwa VidyapeethamCoimbatore641112India Institute of Sustainable Construction Vilnius Gediminas Technical UniversityVilnius10223Lithuania

Hydrogen is the new age alternative energy source to combat energy demand and climate *** of hydrogen is vital for a nation’s *** of literature provide different methods for storing the produced hydrogen,and the rational selection of a viable method is crucial for promoting sustainability and green ***,hydrogen storage is associated with diverse sustainable and circular economy(SCE)*** a result,the authors consider the situation a multi-criteria decision-making(MCDM)*** infer that previous models for hydrogen storage method(HSM)selection(i)do not consider preferences in the natural language form;(ii)weights of experts are not methodically determined;(iii)hesitation of experts during criteria weight assessment is not effectively explored;and(iv)three-stage solution of a suitable selection of HSM is *** by these gaps,in this paper,authors put forward a new integrated framework,which considers double hierarchy linguistic information for rating,criteria importance through inter-criteria correlation(CRITIC)for expert weight calculation,evidence-based Bayesian method for criteria weight estimation,and combined compromise solution(CoCoSo)for ranking *** applicability of the developed framework is testified by using a case example of HSM selection in *** and comparative analysis reveal the merits and limitations of the developed framework.

关键词： Hydrogen storage methods double hierarchy hesitant fuzzy linguistic term set evidence theory CoCoSo method sustainability circular economy

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Exploring the Synergy: Experimental and Theoretical Investigation of Steel and Glass Fiber Reinforced Polymer (GFRP) Reinforced Slab Incorporating Alccofine and M-Sand

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Open Journal of Civil Engineering 2024年第3期14卷 334-347页

作者： Vijayalakshmi ravichandran ravichandran Ramanujam Srinivasan Saravanan Jagadeesan Prithiviraj Chidambaram Department of Civil and Structural Engineering Annamalai University Chidambaram India Department of Civil Engineering SRM Madurai College for Engineering and Technology Tamilnadu India

Introduction: This study investigates the Experimental and Theoretical Investigation of Steel and Glass Fiber Reinforced Polymer (GFRP) Reinforced Slab Incorporating Alccofine and M-sand. Objective: Specific objectives include evaluating the mechanical properties and structural behaviour of steel and GFRP-reinforced one-way slabs and comparing experimental and theoretical predictions. Methods: Four different mix proportions were arrived at, comprising both conventional concrete and Alccofine-based concrete. In each formulation, a combination of normal river sand and M-sand was utilized. Results: Concrete with Alccofine exhibits superior mechanical properties, while M-sand incorporation minimally affects strength but reduces reliance on natural sand. GFRP-reinforced slabs display distinct brittle behaviour with significant deflections post-cracking, contrasting steel-reinforced slabs’ gradual, ductile failure. Discrepancies between experimental data and design recommendations underscore the need for guideline refinement. Conclusion: Alccofine and M-sand enhance concrete properties, but reinforcement type significantly influences slab behaviour. GFRP-reinforced slabs, though exhibiting lower values than steel, offer advantages in harsh environments, warranting further optimization.

关键词： Fiber Reinforced Polymer Alccofine Concrete Structural Behaviour Mechanical Properties One-Way Slab Sustainable Construction Materials Alternative Aggregates

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Exploring the impact of high density planting system and deficit irrigation in cotton(Gossypium hirsutum L.): a comprehensive review

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Journal of Cotton Research 2024年第3期 302-317页

作者： MANIBHARATHI Sekar SOMASUNDARAM Selvaraj PARASURAMAN Panneerselvam SUBRAMANIAN Alagesan ravichandran Veerasamy MANIKANDA BOOPATHI Narayanan Department of Agronomy Tamil Nadu Agricultural University Cotton Research Station Tamil Nadu Agricultural University Department of Cotton Tamil Nadu Agricultural University Department of Crop Physiology Tamil Nadu Agricultural University Department of Plant Biotechnology Centre for Plant Molecular Biology and Biotechnology Tamil Nadu Agricultural University

Lessons learned from past experiences push for an alternate way of crop production. In India, adopting high density planting system(HDPS) to boost cotton yield is becoming a growing trend. HDPS has recently been considered a replacement for the current Indian production system. It is also suitable for mechanical harvesting, which reducing labour costs, increasing input use efficiency, timely harvesting timely, maintaining cotton quality, and offering the potential to increase productivity and profitability. This technology has become widespread in globally cotton growing regions. Water management is critical for the success of high density cotton planting. Due to the problem of freshwater availability, more crops should be produced per drop of water. In the high-density planting system, optimum water application is essential to control excessive vegetative growth and improve the translocation of photoassimilates to reproductive organs. Deficit irrigation is a tool to save water without compromising yield. At the same time, it consumes less water than the normal evapotranspiration of crops. This review comprehensively documents the importance of growing cotton under a high-density planting system with deficit irrigation. Based on the current research and combined with cotton production reality, this review discusses the application and future development of deficit irrigation, which may provide theoretical guidance for the sustainable advancement of cotton planting systems.

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GIS-based potential assessment of floating photovoltaic systems in reservoirs of Tamil Nadu in India

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Clean Energy 2023年第3期7卷 671-689页

作者： Nagavinothini ravichandran Balamurugan Paneerselvam Nagananthini ravichandran Independent researcher(Structural Engineering) Tamil NaduIndia Center of Excellent of Interdisciplinary Research for Sustainable Development Chulalongkorn UniversityBangkokThailand Department of Electrical Engineering and Information Technology University of Naples Federico IINaplesItaly

Floating photovoltaic systems(FPVs)are one of the emerging renewable-energy technologies suitable for implementation in land-scarce areas around the *** installation of FPVs in water bodies in highly populated countries such as India will improve renewable-energy production with added advantages in terms of efficiency,water savings and reduced carbon *** this context,the present study aims to identify suitable reservoirs for solar energy production using FPV technology in Tamil Nadu,India using geographic information system techniques.A total of 118 reservoirs located in the study area were *** results have shown that the implementation of FPV systems will significantly improve the production of renewable *** most suitable res-ervoirs with hydroelectric power plants for hybrid FPV implementation and their potential to reduce water evaporation and carbon emissions are *** results reveal that hybrid systems will generate 1542.53 GWh of power annually and also save 36.32×10^(6)m^(3)of water every *** results of this investigation will aid in fulfilling sustainable energy production in India,and the meth-odology presented may be useful for the analysis and prioritization of reservoirs for the implementation of FPV all over the world.

关键词： floating photovoltaic system evaporation carbon emission solar energy geographic information system

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Performance analysis of a floating photovoltaic covering system in an Indian reservoir

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Clean Energy 2021年第2期5卷 208-228页

作者： Nagananthini ravichandran Nagavinothini ravichandran Balamurugan Panneerselvam Independent Researcher(Power Electronics and Drives) Tamil NaduIndia Postdoctoral Researcher Department of Structures for Engineering and ArchitectureUniversity of Naples Federico IINaplesItaly Assistant Professor Department of Civil EngineeringM Kumarasamy College of EngineeringTamil NaduIndia

Floating photovoltaic(FPV)systems are one of the globally emerging technologies of renewable energy production that tend to balance the water-energy demand by effectively saving the evaporated water from reservoirs while generating electrical *** study presents the performance analysis of a model FPV plant in an Indian *** Mettur dam reservoir located in Tamil Nadu,India with a hydroelectric power plant of 150-MW capacity is considered as a test *** preliminary design of the FPV plant is proposed based on a detailed study of the key design elements and their suitability for Indian *** proposed plant is numerically analysed for various tilt angles,mounting systems and tracking mechanisms in order to assess its potential power generation.A flat-mount system in landscape orientation was found to exhibit a high performance ***,a fixed-tilt FPV system with a panel slope of 10°and an FPV system with single-axis tracking were found to be suitable for the Mettur ***,cost analysis of the FPV system is also presented along with the carbon-footprint estimation to establish the economic and environmental benefits of the *** results show that the total potential CO_(2) saving by a FPV system with tracking is 135918.87 t CO_(2) and it is 12.5%higher than that of a fixed-mount FPV system.

关键词： solar energy floating photovoltaic system evaporation loss hydroelectric power plants

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Tuning the Microstructural and Magnetic Properties of ZnO Nanopowders through the Simultaneous Doping of Mn and Ni for Biomedical Applications

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Journal of Materials Science & Technology 2015年第11期31卷 1111-1117页

作者： K.Karthika K.ravichandran Post Graduate & Research Department of Physics AVVM Sri Pushpam College(Autonomous)

Undoped and Mn＋Ni doped ZnO nanopowders were synthesized using a simple soft chemical route by varying the Ni doping level （1, 3, 5 and 7 at.%） and keeping the Mn doping level （10 at.%） constant, X-ray diffraction studies reveal that the incorporated Ni^2＋ ions form a secondary phase of cubic NiO beyond the Ni doping level of 3 at.%, which is also confirmed by Fourier transform infrared spectroscopy. The band gap of the nanopowders increases （from 3.32 to 3.44 eV） up to 3 at.% of Ni doping and decreases with further doping. ZnO：Mn：Ni nanopowders with 3 at.% of Ni concentration exhibit good antibacterial efficiency. The variation in the size of the nanoparticles, as observed from the TEM images and hydroxyl radicals as evidenced from the photoluminescence results, clearly substantiate the discussion on the antibacterial efficiency of the synthesized nanopowders. Magnetic properties of the synthesized nanopowders were studied using a vibrating sample magnetometer, and the results showed that the doping of Mn and Ni largely influences the magnetic properties of ZnO nanopowders.

关键词： ZnO Nanopowders Soft chemical route Magnetic properties Antibacterial activity

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Corrosion Inhibition of Mild Steel in Sulphuric Acid Using Luffa Aegyptiaca Leaves Extract

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Acta Metallurgica Sinica(English Letters) 2014年第6期27卷 969-980页

作者： S. Jyothi J. ravichandran Post Graduate and Research Department of Chemistry Sri Ramakrishna Mission Vidyalaya College of Arts and Science

The corrosion inhibition of mild steel（MS） in sulphuric acid using Luffa aegyptiaca（LA） leaves extract was investigated by weight loss studies, colorimetric measurements, potentiodynamic polarisation and electrochemical impedance spectroscopy. The adsorption of LA leaves extract was confirmed by Fourier transform infrared spectroscopy and optical profilometry. The inhibition efficiency increased with increasing concentration of the extract but decreased with rise in temperature and with the increase in acid strength. Furthermore, the inhibition efficiency synergistically increased on the addition of halide ions. Polarisation studies revealed that the LA extract acts as mixed- type inhibitor. Physical adsorption mechanism is proposed from the trend in inhibition efficiency with the change in temperature and from thermodynamic parameters. The adsorption of LA on MS surface obeys Langmuir adsorption isotherm and follows the kinetic thermodynamic model of ElAwady at all temperatures studied.

关键词： Mild steel Adsorption Corrosion Thermodynamic properties FTIR

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Type Inversion and Certain Physical Properties of Spray Pyrolysed SnO_2:Al Films for Novel Transparent Electronics Applications

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Journal of Materials Science & Technology 2014年第2期30卷 97-102页

作者： K.ravichandran K.Thirumurugan Post Graduate and Research Department of Physics AVVM Sri Pushpam College(Autonomous)

Aluminium doped tin oxide films have been deposited onto glass substrates by using a simplified and low cost spray pyrolysis technique. The AI doping level varies between 0 and 30 at.% in the step of 5 at.%. The resistivity （p） is the minimum （0.38 Ω cm） for 20 at.% of AI doping. The possible mechanism behind the phenomenal zig-zag variation in resistivity with respect to AI doping is discussed in detail. The nature of conductivity changes from n-type to p-type when the AI doping level is 10 at.%. The results show that 20 at.% is the optimum doping level for good quality p-type SnO2：AI films suitable for transparent electronic devices.

关键词： Tin oxide films P-type transparent conducting oxide (TCO) Spray pyrolysis Transparent electronics Electrical properties Optical properties

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Enhancement of Photocatalytic and Antibacterial Activities of ZnO：Ag Nanopowders Through the Addition of Bamboo Charcoal： An Efficient Natural Adsorbent

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Acta Metallurgica Sinica(English Letters) 2017年第12期30卷 1249-1256页

作者： K. Nithiyadevi K. ravichandran PG Research and Department of Physics AVVM Sri Pushpam College (Autonomous) Poondi Thanjavur Tamil Nadu 613 503 India Department of Physics Bharathidasan University Constituent College (Women) Orathanadu Tamil Nadu 614 625 India

This research article explains the removal of methylene blue （MB） and malachite green （MG） from aqueous solution using adsorption/photodegradation activity of ZnO：Ag/bamboo charcoal （BC） nanocomposite. In addition, the antibacterial studies of the prepared samples were tested against Staphylococcus aureus （S. aureus） Gram-positive and Escherichia coli （E. coli） Gram-negative bacteria by the well diffusion method. The ZnO：Ag/BC nanocomposite exhibits superior photocatalytic activity compared with ZnO：Ag. Remarkable degradation efficiencies of 93.95% （MB） and 95.75% （MG） were recorded for ZnO：Ag/BC nanocomposite after 45 min. The degradation process follows a pseudo-first-order kinetics. The rate constant of ZnO：Ag/BC nanocomposite is two times greater than that of pristine ZnO nanopowder for the degradation of MB dye, while for MG dye degradation, it is three times. It is found that the ZnO：Ag/BC nanocomposite shows a higher rate of dye removal due to excellent adsorbing properties of bamboo charcoal （BC）. The ZnO：Ag/BC nanocomposite showed better antibacterial properties compared to ZnO：Ag. In this study, the samples were prepared using a simple and low-cost soft chemical route and they were characterized by optical, structural, surface morphological, antibacterial and photocatalytic properties. These characterization studies substantiate the discussions on the photocatalytic and antibacterial activities of the synthesized samples.

关键词： Bamboo charcoal Adsorbent ZnO Photocatalysis Antibacterial

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