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Simultaneous allocation of renewable energy sources and custom power quality devices in electrical distribution networks using artificial rabbits optimization

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Clean Energy 2023年第4期7卷 795-807页

作者： ranga rao chegudi Balamurugan Ramadoss Ramakoteswara rao Alla Department of Electrical Engineering Faculty of Engineering and TechnologyAnnamalai UniversityChidambaramTamilnadu 608002India Department of EEE RVR&JC College of EngineeringGunturAndhra Pradesh 522019India

This study suggests an optimal renewable energy source(RES)allocation and distribution-static synchronous compensator(D-STATCOM)and passive power filters(PPFs)for an electrical distribution network(EDN)to improve its performance and power quality(PQ).First,the latest metaheuristic artificial rabbits optimization(ARO)is used to locate and size solar photovoltaic(PV),wind turbine(WT)and D-STATCOM *** the second stage,ratings of single-tuned PPFs and D-STATCOMs at the RESs are determined,considering non-linear loads in the *** multi-objective function reduces power loss,improves the voltage stability index(VSI)and limits total harmonic *** using the IEEE 33-bus EDN compared the ARO results with those of previous *** the first scenario,ideally integrated D-STATCOMs,PVs and WTs reduced losses by 34.79%,64.74%and 94.15%,*** increases from 0.6965 to 0.7749,0.8804 and *** optimal WT integration of the first scenario outperformed the PVs and *** second step optimizes the WTs and PQ devices for non-linear *** and D-STATCOMs reduce the maximum total harmonic distortion of the voltage waveform by 5.21%with non-linear loads to 3.23%,while WTs and PPFs reduce it to 4.39%.These scenarios demonstrate how WTs and D-STATCOMs can improve network performance and *** computational efficiency of ARO is compared to that of the pathfinder algorithm,future search algorithm,butterfly optimization algorithm and coyote optimization *** speeds up convergence and improves solution quality and comprehension.

关键词： artificial rabbits optimization renewable distribution generation D-STATCOM power quality improvement loss reduction voltage stability enhancement

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Recent Advances in IOL Surgery

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眼科学报 1993年第1期9卷 19-20页

作者： P.ranga Reddy Venkateshwara rao Puligala Sarojini Devi Eye Hospital Hyderabad Andnra Pradesn IndiaSarojini Devi Eye Hospital Hyderabad Andnra Pradesn IndiaSarojini Devi Eye Hospital Hyderabad Andnra Pradesn India

Tremendous progress is made in recent time in the field of Ophthalmology especially after advent of IOL implantation surgery. Recent advance in anaesthesia/lOL, designs/IOL, quotings/cantering, techniques/advances in ... 详细信息

关键词： IOL implantation surgery lens

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Multivariate Aggregated NOMA for Resource Aware Wireless Network Communication Security

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Computers, Materials & Continua 2023年第1期74卷 1693-1708页

作者： V.Sridhar K.V.ranga rao Saddam Hussain Syed Sajid Ullah Roobaea Alroobaea Maha Abdelhaq Raed Alsaqour ECE Department Vidya Jyothi Institute of TechnologyIndia CSE Department Neil Gogte Institute of TechnologyIndia School of Digital Science Universiti Brunei DarussalamJalanTungku LinkGadong BE1410Brunei Darussalam Department of Information and Communication Technology University of Agder(UiA)N-4898 GrimstadNorway Department of Computer Science College of Computers and Information TechnologyTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Department of Information Technology College of Computer and Information SciencesPrincess Nourahbint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Information Technology College of Computing and InformaticsSaudi Electronic University93499RiyadhSaudi Arabia

NonorthogonalMultiple Access(NOMA)is incorporated into the wireless network systems to achieve better connectivity,spectral and energy effectiveness,higher data transfer rate,and also obtain the high quality of services(QoS).In order to improve throughput and minimum latency,aMultivariate Renkonen Regressive Weighted Preference Bootstrap Aggregation based Nonorthogonal Multiple Access(MRRWPBA-NOMA)technique is introduced for network *** the downlink transmission,each mobile device’s resources and their characteristics like energy,bandwidth,and trust are *** by,the Weighted Preference Bootstrap Aggregation is applied to recognize the resource-efficient mobile devices for aware data transmission by constructing the different weak hypotheses i.e.,Multivariate Renkonen Regression *** on the classification,resource and trust-aware devices are selected for *** of the proposed MRRWPBA-NOMA technique and existing methods are carried out with different metrics such as data delivery ratio,throughput,latency,packet loss rate,and energy efficiency,signaling *** simulation results assessment indicates that the proposed MRRWPBA-NOMA outperforms well than the conventional methods.

关键词： Mobile network multivariate renkonen regression weighted preference bootstrap aggregation resource-aware secure data communication NOMA

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Bilateral Tibial Xanthoma in a Normolipidemic Patient—Report of a Rare Case with Review of Literature

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International Journal of Clinical Medicine 2012年第3期3卷 234-237页

作者： Vallabhaneni Kalyan Chakravarthi E. Aruna Damera Naveen Chandra rao Diddi ranga rao Department of Pathology Dr.PSIMS & RF Chinna Avutapalli India.

Xanthoma of bone is a rare benign bone disorder. It radiologically presents as a lytic lesion, often with cortical expansion or disruption, mimics primary bone tumors and metastatic lesions. Histopathological study gives the definitive diagnosis. Xanthoma of bilateral tibia in a normolipidemic patient is rare and not yet reported in literature. Here with we present one such rare case, with review of literature.

关键词： Xanthoma Normolipidic Tibia Lytic Lesion

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Recovery of Uranium and Plutonium from Waste Matrices Using Supercritical Fluid Extraction

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American Journal of Analytical Chemistry 2012年第12期3卷 916-922页

作者： Krishnamurthy Sujatha Kancharlapalli Chinaraga Pitchaiah Nagarajan Sivaraman Thandankorai Ganapathi Srinivasan Polur ranga rao Vasudeva rao Chemistry Group Indira Gandhi Centre for Atomic Research Kalpakkam India

Supercritical fluid extraction (SFE) of plutonium in its nitrate form from actual waste, i.e. plutonium bearing cellulose matrix was demonstrated using 0.1 litre capacity extraction vessel. Complete recovery of plutonium was demonstrated using modified supercritical carbon dioxide (Sc-CO2), i.e. Sc-CO2 containing octylphenyl-N, N-diisobutyl-carbamoyl- methylphosphine oxide (φCMPO). Near complete recovery of uranium was demonstrated from simulated waste matri- ces, i.e. uranium bearing teflon, glass and cellulose matrices using preparative scale SFE, i.e. from 1 litre capacity ex- traction vessel. The recovery of uranium was established using Sc-CO2 modified with acetyl acetone.

关键词： Supercritical CO2 SFE Uranium Plutonium φCMPO Cellulose Matrix

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Midline Spinal Cord Hamartomas—A Report of Six Cases

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International Journal of Clinical Medicine 2013年第6期4卷 291-295页

作者： Damera Naveen Chandra rao Vallabhaneni Kalyan Chakravarthy Eslavath Aruna Gundala Venkata Ratnam Diddi ranga rao Department of Pathology Pinnamaneni Siddhartha Institute of Medical Sciences & Research Foundation Chinna Avutapalli India Department of Pathology Pinnamaneni Siddhartha Institute of Medical Sciences & Research Foundation Chinna Avutapalli India.

Midline Spinal Cord Hamartomas are relatively rare and asymptomatic. These lesions may present with a tethered cord and a normal overlying skin, a skin dimple, a dermal sinus tract or dense collagen. Most patients have few or no neurological symptoms related to them. Microscopically they are composed of mature and well-differentiated ectodermal and mesodermal elements, meningothelial cells, calcification, and even urothelium. We report MRI and histologic features of midline spinal cord hamartomas in six cases.

关键词： Hamartoma Meningothelial Cells Ectodermal

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Arsenic Removal from Contaminated Water by Various Physicochemical Processes

Arsenic Removal from Contaminated Water by Various Physicoch...

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作者： Pandu ranga rao Nzanthung Ngullie A.K.Golder Pranab Kumar Ghosh the Department of Civil Engineering Indian Institute of Technology the Department of Chemical Engineering Indian Institute of Technology

Efficiency of ion exchange, electro membrane, and electrochemical ion-exchange(EIX) processes on arsenic removal were evaluated in laboratory. Batch studies were performed with chloride(IRA410) as well as hydroxyl(modified IRA410) exchangeable forms of anion exchange resins(AER), whereas, column study was done with only hydroxyl exchangeable AER to evaluate its performance on arsenic removal. A plate and frame type electrolytic cell with ruthenium dioxide coated titanium plates(RuO/Ti) as anode, and stainless steel plates as cathode, was fabricated to do experiment to evaluate the performance on arsenic removal by electro membrane as well as EIX processes. Though, As(V) removal was significant during batch kinetic study, As(III) removal was poor by both the AER. Breakthrough curves were developed by passing As(V) contaminated water at a flow rate of 5 ml/min through 3 different bed depths of 5 cm, 7.5 cm, and 10 cm of modified IRA410 columns having 1 cm internal diameter. The columns could efficiently remove from 500 μg/l of As(V) contaminated water to below 10 μg/l. In electro membrane process, effects of electrolyte concentration, effects of applied voltage, and initial concentration of As(V) were evaluated. EIX process was found to be inefficient in removing As(V) from contaminated water.

关键词： Arsenic ion-exchange EIX BDST

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An Easterly Wave Generated Heavy Rainfall Event over South India—A Case Study

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International Journal of Geosciences 2018年第10期9卷 606-618页

作者： Pilli Suneetha Peddada Latha Sai Ramalingeswara rao Dasari Melchi Zedek Katru Naga Lakshmi Odury Sri ranga Udaya Bhanu Kumar Department of Meteorology & Oceanography College of Science and Technology Andhra University Visakhapatnam India

Easterly waves are one of the rain-bearing systems of northeast monsoon and produce massive rainfall events over south India. In the present case study, an attempt is made to identify extreme heavy rainfall event over south India on 26th October, 2006 due to the passage of the easterly wave. Satellite images provide an inverted v-shape easterly wave. Next, circulation features at different levels clearly indicate the location, movement and speed of the easterly wave. Strong north-easterlies with a magnitude of 9.9 m/s are maintained at the surface. The convergence is mainly occupied between 12°N - 16°N, while the divergence is 5°N - 12°N on 26th October, 2006 at the surface level. On 25th, easterly wave is advected north of trough with a magnitude of 0.2 m/s and increased during the remaining days. There are two divergence cells along 5°N and 16°N before and after the event at 700 hPa level. Thus this study helps to bring out the essential characteristics of the easterly wave during northeast monsoon. The highlight of this study is that the easterly wave creates floods in the absence of tropical cyclones over south India.

关键词： Easterly Wave Northeast Monsoon Heavy Rainfall Event Potential Vorticity Divergence

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Enhanced Energy Efficient with a Trust Aware in MANET for Real-Time Applications

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Computers, Materials & Continua 2023年第4期75卷 587-607页

作者： M.V.Narayana Vadla Pradeep Kumar Ashok Kumar Nanda Hanumantha rao Jalla Subba Reddy Chavva Department of CSE Guru Nanak Institutions Technical CampusHyderabadRanga Reddy DistrictTelangana501506India Department of CSE B V Raju Institute of TechnologyNarsapurMedakTelangana502313India Department of CSE T.R.R.Government Degree College KandukurKandukurA.P.523105India Department of IT VFST&Research(Deemed to be University)VadlamudiA.P.522213India

Mobile ad hoc networks (MANETs) are subjected to attack detectionfor transmitting and creating new messages or existing message *** attacker on another node evaluates the forging activity in themessage directly or indirectly. Every node sends short packets in a MANETenvironment with its identifier, location on the map, and time through *** attackers on the network broadcast the warning message usingfaked coordinates, providing the appearance of a network collision. Similarly,MANET degrades the channel utilization performance. Performancehighly affects network performance through security algorithms. This paperdeveloped a trust management technique called Enhanced Beacon TrustManagement with Hybrid Optimization (EBTM-Hyopt) for efficient clusterhead selection and malicious node detection. It tries to build trust amongconnected nodes and may improve security by requiring every participatingnode to develop and distribute genuine, accurate, and trustworthy materialacross the network. Specifically, optimized cluster head election is done periodicallyto reduce and balance the energy consumption to improve the lifetimenetwork. The cluster head election optimization is based on hybridizingParticle Swarm Optimization (PSO) and Gravitational Search OptimizationAlgorithm (GSOA) concepts to enable and ensure reliable routing. Simulationresults show that the proposed EBTM-HYOPT outperforms the state-of-thearttrust model in terms of 297.99 kbps of throughput, 46.34% of PDR, 13%of energy consumption, 165.6 kbps of packet loss, 67.49% of end-to-end delay,and 16.34% of packet length.

关键词： MANET malicious nodes clustering trust management beacon message

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Floral extract of Tecoma stans:A potent inhibitor of gentamicin-induced nephrotoxicity in vivo

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Asian Pacific Journal of Tropical Medicine 2011年第9期4卷 680-685页

作者： Raju S Kavimani S Uma Maheshwara rao V Sreeramulu Reddy K Vasanth Kumar G Vijaya College of Pharmacy MunaganoorRanga Reddy DistAndhra PradeshIndia-505511 Mather Theresa Post Graduate Institute of Health Sciences.Gorimedu PuducherryIndia Nulla Narsimha Reddy College of Pharmacy KorremulaRanga Reddy DistAndhra Pradesh.India Assistant manager - Clinical R&D Shantha Biotechnics LimitedHyderabadAndhra Pradesh.India -500004 Health Management and Research Institute HyderabadAndhra PradeshIndia

Objective:To highlight the nephroprotective activity of ethyl acetate extract of dried flowers of Tecomu stans for its protective effects on genlamicin-induced nephrotoxicity in albino rats. Methods:For studying acute toxicity study,single oral dose of 5（KM） mg ethyl acetate floral extract/kg hodv weight was administered to albino rats（five females,five males）.Nephrotoxicity was induced in albino rats by intraperitoneal administration of gentamicin 80 mg/kg/day for eight *** of concurrent administration of ethyl acetate floral extract of Tecoma stans at a dose of 100.200 and 300 mg/kg/day given by oral mute was determined using serum creatinine,serum uric acid,blood urea nitrogen and serum urea as indicators of kidney *** study groups contained six rats in each *** nephrotoxicity of gentamicin is known to involve induction of oxidative stress,in vitro antioxidant aclivity and free radical-scavenging activity of this extract was also ***:For acute toxicity testing both female and male rats administered with the extract at a dose of 5 000 mg/*** results showed no toxicity in terms of general behavior change,mortality,or change in gross appearance of internal organs(LD50>5 000 mg/kg). It was observed that the ethyl acetate floral extract of Tecoma stans significantly protected rat kidneys from gentamicin-induced histopathological ***-induced glomerular congestion,peritubular and blood vessel congestion,epithelial desquamation,accumulation ol inflamnialoiy cells and necrosis of the kidney cells were found to be reduced in the groups receiving the ethyl acetate floral extract of Tecoma starts along with gentamicin in a dose dependent *** floral extract also reduced the gentamicin-induced increase in serum creatinine,serum uric acid,blood urea nitrogen and serum urea levels（P>0.01）.Conclusions: The present study indicates a verv important role of reactive oxygen species（BOS） and the relation to re

关键词： Gentamicin Tecoma stans Rats Nephrotoxicity Serum urea Creatinine

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