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Air-stable,all-dry transferred ReS_(2)/GaSe heterostructure-based NO_(2)gas sensor

Journal of Materials Science & Technology 2024年第1期168卷 79-87页

作者： A.venkatesan Hyeyoon Ryu Anupom Devnath Hyungyu Yoo Seunghyun Lee Department of Electronic Engineering Kyung Hee UniversityYongin-Si 17104South Korea Department of Electronics and Information Convergence Engineering Kyung Hee UniversityYongin-Si 17104South Korea

Two-dimensional(2D)materials have gained considerable attention in chemical sensing owing to their naturally high surface-to-volume ***,the poor response time and incomplete recovery re-strict their application in practical,high performance gas *** this work,we fabricated air-stable ReS_(2)/GaSe heterostructure-based NO_(2)gas sensors with excellent gas sensing response,recovery,selectiv-ity and a low limit of detection(LOD)toward nitrogen dioxide(NO_(2)).The ReS_(2)/GaSe heterostructure was prepared via mechanical exfoliation and an all-dry transfer *** the sensing measurements,temperature-dependant transport measurements were carried *** Schottky Barrier Height(SBH)of the ReS_(2)/GaSe heterostructure was calculated and the corresponding transport mechanisms were *** fabricated gas sensors showed a significant response enhancement with full reversibility to-ward ppm-level NO_(2)(response of∼17%at 3 ppm,a LOD of∼556 ppb)at an operating temperature of(33°C).In particular,the total response and recovery time of the ReS_(2)/GaSe was revealed to be less than 4 min(∼38 s and∼174 s,respectively)for the 250 ppm concentration,which is one of the best response and recovery time toward ppm-level NO_(2).The excellent sensing performances and recovery characteris-tics of the ReS_(2)/GaSe structure are attributed to its efficient charge separation,unique interlayer coupling and desirable band *** atomically thin,ultrasensitive gas sensor that operates at room tem-perature is a strong technological contender to conventional metal oxide gas sensors,which often require elevated temperatures.

关键词： 2D materials All-dry transfer Gas sensor Van der Waals heterostructure ReS_(2)/GaSe Gas sensing response Transition metal dichalcogenide

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Effectiveness of craniosacral therapy,Bowen therapy,static touch and standard exercise program on sleep quality in fibromyalgia syndrome:A randomized controlled trial

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Journal of Integrative Medicine 2024年第4期22卷 473-483页

作者： Reepa Avichal Ughreja Prem venkatesan Dharmanand Balebail Gopalakrishna Yogesh Preet Singh Vani Lakshmi R Department of Physiotherapy Manipal College of Health ProfessionsManipal Academy of Higher EducationManipal 576104KarnatakaIndia Department of Rheumatology Manipal HospitalBengaluru 560052KarnatakaIndia Department of Clinical Immunology and Rheumatology All India Institute of Medical SciencesBilaspur 174001Himachal PradeshIndia Department of Data Science Prasanna School of Public HealthManipal Academy of Higher EducationManipal 576104KarnatakaIndia

Background:Sleep disturbance is commonly seen in fibromyalgia syndrome (FMS);however,high quality studies involving manual therapies that target FMS-linked poor sleep quality are lacking for the Indian ***:Craniosacral therapy (CST),Bowen therapy and exercises have been found to influence the autonomic nervous system,which plays a crucial role in sleep *** the paucity of evidence concerning these effects in individuals with FMS,our study tests the effectiveness of CST,Bowen therapy and a standard exercise program against static touch (the manual placebo group) on sleep quality in ***,setting,participants and intervention:A placebo-controlled randomized trial was conducted on132 FMS participants with poor sleep at a hospital in *** participants were randomly allocated to one of the four study groups,including CST,Bowen therapy,standard exercise program,and a manual placebo control group that received static ***,Bowen therapy and static touch treatments were administered in once-weekly 45-minute sessions for 12 weeks;the standard exercise group received weekly supervised exercises for 6 weeks with home exercises until 12 *** 12 weeks,all study participants performed the standard exercises at home for another 12 *** outcome measures:Sleep quality,pressure pain threshold (PPT),quality of life and fibromyalgia impact,physical function,fatigue,pain catastrophizing,kinesiophobia,and positive–negative affect were recorded at baseline,and at weeks 12 and 24 of the ***:At the end of 12 weeks,the sleep quality improved significantly in the CST group (P=0.037) and Bowen therapy group (P=0.023),and the PPT improved significantly in the Bowen therapy group(P=0.002) and the standard exercise group (P<0.001),compared to the static touch *** improvements were maintained at 24 *** between-group differences were observed for other secondary ***:CST and Bowen therapy improv

关键词： Chronic pain Complementary therapies Exercise Fibromyalgia Musculoskeletal manipulations Sleep

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Dietary Green Tea Extract and Antioxidants Improve Insulin Secretory Functions of Pancreatic β-Cells in Mild and Severe Experimental Rodent Model of Chronic Pancreatitis

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Open Journal of Endocrine and Metabolic Diseases 2024年第2期14卷 53-72页

作者： Galande Sheethal Ranjeet K. Tokala Pavan Pondugala Krishna Vemula vijayal.kshmi venkatesan Pothani Suresh Surya Satyanarayana Singh Guduru Venkat Rao Duvvur Nageshwar Reddy Mitnala Sasikala Basic Science and Translational Research Division Asian Healthcare Foundation AIG Hospitals Hyderabad India Division of Cell and Molecular Biology National institute of Nutrition Hyderabad India National Animal Resource Facility for Biomedical Research Hyderabad India Department of Biochemistry Osmania University Hyderabad India Department of Surgical Gastroenterology Asian Institute of Gastroenterology Hyderabad India Department of Gastroenterology Asian Institute of Gastroenterology Hyderabad India

Chronic pancreatitis (CP) is a progressive inflammatory disorder of the pancreas. It is predominantly idiopathic (with an unknown cause) in India and mostly due to alcohol in the West. Diabetes that occur secondary to chronic pancreatitis (T3c Diabetes) is often brittle, and is difficult to attain normoglycemia with conventional treatment requiring multiple doses of insulin. Mild and severe model of CP was induced in mice by repeated intraperitoneal injections of cerulein and L-arginine respectively with an intent to study islet dysfunction and develop therapeutic strategy in animal models of CP. Dietary intervention of epigallocatechin-3-gallate (EGCG) was tested in both the models of CP for its beneficial effects on insulin secretory functions. Pancreata collected upon euthanasia were used to study alterations in the morphology of pancreatic parenchyma and inflammation by staining with H&E and fibrotic changes by Masson’s trichrome and picrosirius staining. Insulin secretory functions of islets were evaluated to test the efficacy of the dietary intervention on β-cell functions. Intraperitoneal glucose tolerance test was performed to monitor the glucose homeostasis before and after the dietary intervention. Both the models resulted in CP with dispersed acini, inflammation and fibrosis. The loss of acini and extent of fibrosis was more in L-arginine model. 2-fold improvement in glucose-stimulated insulin secretory functions of islets was observed with 0.5% EGCG dietary intervention in cerulein model of CP and 1.6-fold in L-arginine model of CP. A further improvement in insulin secretion by 3.2-fold was observed with additional dietary supplements like N-acetyl cysteine, curcumin in combination with EGCG. Our results thus demonstrate and highlight the therapeutic potential of dietary green tea (EGCG) supplementation in reversing islet dysfunction and improving glucose homeostasis in experimental chronic pancreatitis in mice.

关键词： Dietary Intervention C57BL6/J Mice Epigallocatechin-3-Gallate N-Acetyl Cysteine Curcumin Chronic Pancreatitis Islets Glucose Stimulated Insulin Secretion

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Application of Pomegranate Rind Extract for Improvement of Functional Properties of Various Materials—A Critical Review

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Open Journal of Composite Materials 2024年第2期14卷 71-90页

作者： Habeebunissa Nooman Narayanan Gokarneshan Murugan Umamaheswari Muthumani Dhiliphan Kumar Usha Kumari Ratna Jayagopal Lavanya Senthamarai Kannan Umamageshwari Sona Mohandas Anton Zahurudeen Shahanaz venkatesan Sathya David Piriadarshani Chokkanathan Kayalvizhi Department of Knitwear Design National Institute of Fashion Technology Chennai India Department of Textile Chemistry SSM College of Engineering Komarapallayam India Department of Management Studies Dr. SNS Rajalakshmi College of Arts and Science Coimbatore India Department of Business Administration Kalasalingam Business School Kalasalingam Academy of Research and Education Srivilliputhur India Department of Textiles and Clothing Avinashi Lingam Institute for Home Science and Higher Education for Women Coimbatore India Department of Fashion Design SRM Institute of Science and Technology (Kattankalathur) Chennai India Department of Fashion Design Hindustan Institute of Technology and Science Chennai India Department of Fashion Design SRM Institute of Science and Technology (Ramapuram) Chennai India Department of Mathematics Hindustan Institute of Technology and Science Chennai India Department of Textile Technology Jaya Engineering College Tiruninravur India

Pomegranate rind is abundantly available as a waste material. Pomegranate Rind Extract (PRE) can be applied to cotton fabrics for its natural colours, as a mordanting agent and also for imparting certain functional properties such as fire retardancy and antimicrobial properties. This paper reviews the feasibility of Pomegranate Rind Extract to improve the functional properties of cellulosic fabrics. Studies show that varying concentrations and higher temperatures that were used to apply the extract on the fabric, resulted in enhanced functional properties. At a particular concentration, the treated fabric showed a 15 times lower burning rate in comparison with the control fabric. Also, antimicrobial efficacy has been observed against Gram-positive and Gram-negative bacteria. Due to the natural colouring material, it can be used as a natural dye on cotton material. The fire retardancy of pomegranate rind extract was tested on jute material under varying alkalinity. Research has indicated that pomegranate rind extract could be used to dye polyamide as well. The rubbing and wash fastness of the finished fabrics is good. The light fastness was fair, and its antibacterial efficiency against tested bacteria was good.

关键词： Natural Polymers Synthetic Polymers Pomegranate Rind Extract (PRE) Dyeing Functional Property

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Single-phase Thirteen-level Dual-boost Inverter Based Shunt Active Power Filter Control Using Resonant and Fuzzy Logic Controllers

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CSEE Journal of Power and Energy Systems 2022年第3期8卷 849-863页

作者： Shaik Gouse Basha venkatesan Mani Subbarao Mopidevi Vignan's Foundation for Science Technology and Research Andhra Pradesh522213India Vignan's Lara Institute of Technology and Science Vadlamudi522213India

This paper addresses the power quality improvement of a single-phase utility grid using a thirteen-level dualboost inverter(TLDBI)-shunt active filter(SAF).The TLDBI uses a single DC source of low voltage magnitude and five switched capacitor arrangement to achieve self-balanced thirteen level output ***,the charging and voltage balancing of the capacitor is achieved by proper switching sequence control in a series,through which boosted inverter output voltage levels are *** with the tradional H-bridge multilevel inverters(MLIs),all the elements in the proposed TLDBI are able to withstand a voltage stress which is equal to the input DC *** feature ensures the performance of the proposed TLDBI in high-frequency *** power at the electrical grid is highly affected by a wide range of non-linear *** proposed SAF is used for measuring and controlling the current flow from source to *** difference between the targeted and actual currents from the utility grid is measured by using the modified synchronous reference frame(SRF)*** estimated error current is used by the controllers to predict the optimum suitable switching angle and modulation index(MI)to the *** this paper,the traditional proportional-integral(PI)controller,fuzzy logic controller(FLC)and proportional resonant controller(PRC)are compared and the results are presented to validate the performance of *** stability and robustness of the proposed controller is evaluated using Bode,Root locus,and Nyquist *** modeling and analysis of the proposed system are done using MATLAB/Simulink *** simulation results are presented in the various MI of TLDBI and also subjected to non-linear load *** results are also compared to the claim novelty of the proposed study.

关键词： FLC power quality PRC thirteen-level DBI shunt active filter single-phase utility grid SRF

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Combined Economic and Emission Power Dispatch Control Using Substantial Augmented Transformative Algorithm

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Intelligent Automation & Soft Computing 2023年第1期35卷 431-447页

作者： T.R.Manikandan venkatesan Thangavelu Department of Electrical and Electronics Engineering K.S.Rangasamy College of TechnologyTiruchengode637215TamilnaduIndia

The purpose of the Combined Economic Emission Dispatch(CEED)of electric power is to offer the most exceptional schedule for production units,which must run with both low fuel costs and emission levels concurrently,thereby meeting the lack of system equality and inequality *** and emissions dispatching has become a primary and significant concern in power system *** of using non-renewable fuels as input to exhaust power systems with toxic gas emissions and depleted resources for future *** optimal power allocation to generators serves as a solution to this *** dispatch reduces emissions while ignoring economic considerations.A collective strategy known as Combined Economic and Emission Dispatch is utilized to resolve the above-mentioned problems and investigate the trade-off relationship between fuel cost and ***,this work manages the Substantial Augmented Transformative Algorithm(SATA)to take care of the Combined Economic Emission Dispatch Problem(CEEDP)of warm units while fulfilling imperatives,for example,confines on generator limit,diminish the fuel cost,lessen the emission and decrease the force *** is a stochastic streamlining process that relies upon the development and knowledge of *** goal is to minimize the total fuel cost of fossil-based thermal power generation units that generate and cause environmental *** algorithm searches for solutions in the search space from the smallest to the largest in the case of forwarding *** simulation of the proposed system is developed using MATLAB Simulink *** results show the effectiveness and practicability of this method in terms of economic and emission dispatching *** performance of the proposed system is compared with existing Artificial Bee Colony-Particle Swarm Optimization(ABC-PSO),Simulated Annealing(SA),and Differential Evolution(DE)*** fuel cost and gas emission of t

关键词： Economic emission dispatch fuel cost substantial augmented transformative algorithm

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Semi/Fully-Automated Segmentation of Gastric-Polyp Using Aquila-Optimization-Algorithm Enhanced Images

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Computers, Materials & Continua 2022年第2期70卷 4087-4105页

作者： venkatesan Rajinikanth Shabnam Mohamed Aslam Seifedine Kadry Orawit Thinnukool Department of Electronics and Instrumentation Engineering St.Joseph’s College of Engineering Chennai600119India Department of Information Technology College of Computer and Information SciencesMajmaah UniversityAl-Majmaah11952Saudi Arabia Faculty of Applied Computing and Technology Noroff University CollegeKristiansand4608Norway Research Group of Embedded Systems and Mobile Application in Health Science College of ArtsMedia and TechnologyChiang Mai UniversityChiang Mai50200Thailand

The incident rate of the Gastrointestinal-Disease(GD)in humans is gradually rising due to a variety of reasons and the Endoscopic/Colonoscopic-Image(EI/CI)supported evaluation of the GD is an approved *** and evaluation of the suspicious section of the EI/CI is essential to diagnose the disease and its *** proposed research aims to implement a joint thresholding and segmentation framework to extract the Gastric-Polyp(GP)with better *** proposed GP detection system consist;(i)Enhancement of GP region using Aquila-Optimization-Algorithm supported tri-level thresholding with entropy(Fuzzy/Shannon/Kapur)and between-class-variance(Otsu)technique,(ii)Automated(Watershed/Markov-Random-Field)and semi-automated(Chan-Vese/Level-Set/Active-Contour)segmentation of GPfragment,and(iii)Performance evaluation and validation of the proposed *** experimental investigation was performed using four benchmark EI dataset(CVC-ClinicDB,ETIS-Larib,EndoCV2020 and Kvasir).The similarity measures,such as Jaccard,Dice,accuracy,precision,sensitivity and specificity are computed to confirm the clinical significance of the proposed *** outcome of this research confirms that the fuzzyentropy thresholding combined with Chan-Vese helps to achieve a better similarity measures compared to the alternative schemes considered in this research.

关键词： Endoscopic/colonoscopic-image gastric polyp aquila-optimizationalgorithm fuzzy entropy chan-vese segmentation

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Real-time detection of mercury ions based on vertically grown ReS_(2) film

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Journal of Materials Science & Technology 2023年第33期164卷 52-58页

作者： Anupom Devnath Yongsu Choi Hyeyoon Ryu Annadurai venkatesan Gihwan Hyun Sanghoek Kim Seunghyun Lee Department of Electronic Engineering Kyung Hee UniversityYongin-SiGyeonggi-do 17104Republic of Korea Department of Electronics and Information Convergence Engineering Kyung Hee UniversityYongin-SiGyeonggi-do 17104Republic of Korea

Mercury(Hg^(2+)),one of the most dangerous toxins in water,is a heavy metal that causes organ damage from both short-term and chronic *** methods for detecting mercury such as atomic absorption spectrometry or Raman spectroscopy require bulky equipment with complicated *** this work,we fabricated a highly sensitive,real-time thin-film sensor based on vertically aligned rhenium disulfide(ReS_(2)).Its outstanding large surface area and the unique electronic appearance of its layered architecture make a ReS_(2) nanosheet a strong contender for such an *** sensor exhibited a fast response speed(<2 s)to Hg^(2+)and an ultralow detection limit of 4 nM,which is significantly less than that of the *** Protection Agency's(***)allowed utmost contamination limit for Hg^(2+)in drinking water(10 nM).It also exhibited strong selectivity for Hg^(2+)against other metal ions such as Na^(+),Zn^(2+),Fe^(3+),Cu^(2+),Ca^(2+),Ni^(2+),Ag+,Cd^(2+),Fe^(2+),and Pb^(2+).Because this nanosheet can be replaced with any secondary substrate and possibly patterned into a microscale size,the sensor can be integrated into multiple platforms such as portable devices or sensor nodes in a grid network.

关键词： ReS_(2) Field-effect transistor Hg^(2+)ions Real-time sensor Selectivity

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Effect of minocycline and its nano-formulation on central auditory system in blast-induced hearing loss rat model

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Journal of Otology 2023年第1期18卷 38-48页

作者： venkatesan Perumal Arun Reddy Ravula Ningning Shao Namas Chandra Center for Injury Biomechanics Materialsand MedicineDepartment of Biomedical EngineeringNew Jersey Institute of TechnologyNewarkNJ07102USA

Blast injuries are common among the military service members and *** of the devastating effects of blast wave induced TBI is either temporary or permanent hearing *** hearing loss using minocycline is restricted by optimal drug concentration,route of administration,and its ***,therapeutic approach using novel therapeutic delivery method is in great *** the different delivery methods,nanotechnology-based drug delivery is desirable,which can achieve longer systemic circulation,pass through some biological barriers and specifically targets desired *** current study aimed to examine therapeutic effect of minocycline and its nanoparticle formulation in moderate blast induced hearing loss rat model through central auditory *** *** nanoparticle at reduced dose and frequency than regularly administered toxic *** moderate blast exposure,rats had hearing impairment as determined by ABR at 7-and 30-days post *** chronic condition,free minocycline also showed the significant reduction in ABR *** central auditory system,it is found in this study that minocycline nanoparticles ameliorate excitation in inferior colliculus;and astrocytes and microglia activation after the blast exposure is reduced by minocycline nanoparticles *** study demonstrated that in moderate blast induced hearing loss,minocycline and its nanoparticle formulation exhibited the optimal therapeutic effect on the recovery of the ABR impairment and a protective effect through central auditory *** conclusion,targeted and non-targeted nanoparticle formulation have therapeutic effect on blast induced hearing loss.

关键词： Minocycline Nanoparticle Hearing loss Blast injury and targeted drug delivery

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Recent Advances in the Unconventional Design of Electrochemical Energy Storage and Conversion Devices

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Electrochemical Energy Reviews 2022年第4期5卷 38-62页

作者： Senthil Velan venkatesan Arpita Nandy Kunal Karan Stephen R.Larter Venkataraman Thangadurai Department of Chemistry University of Calgary2500 University Drive NWCalgaryAB T2N1N4Canada Department of Chemical&Petroleum Engineering University of Calgary2500 University Drive NWCalgaryAB T2N1N4Canada Department of Geoscience University of Calgary2500 University Drive NWCalgaryAB T2N1N4Canada

As the world works to move away from traditional energy sources,effective efficient energy storage devices have become a key factor for *** emergence of unconventional electrochemical energy storage devices,including hybrid batteries,hybrid redox flow cells and bacterial batteries,is part of the *** alternative electrochemical cell configurations provide materials and operating condition flexibility while offering high-energy conversion efficiency and modularity of design-to-design *** power of these diverse devices ranges from a few milliwatts to several ***-ing durable electronic and point-of-care devices is possible due to the development of all-solid-state batteries with efficient electrodes for long cycling and high energy *** batteries made of earth-abundant metal ions are approaching the capacity of lithium-ion *** are being reduced with the advent of flow batteries with engineered redox molecules for high energy density and membrane-free power generating electrochemical cells,which utilize liquid dynamics and interfaces(solid,liquid,and gaseous)for electrolyte *** batteries support electrode regeneration strategies for chemical and bio-batteries reducing battery energy *** batteries have different benefits,e.g.,carbon-neutral Li-CO_(2) batteries consume CO_(2) and generate power,offering dual-purpose energy storage and carbon *** work considers the recent technological advances of energy storage *** transition from conventional to unconventional battery designs is examined to identify operational flexibilities,overall energy storage/conversion efficiency and application ***,a list of facilities for large-scale deployment of major electrochemical energy storage routes is provided.

关键词： Unconventional energy storage Redox flow battery Organic electrolytes Membrane-free flow cell All-solid-state batteries

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