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Study of ZnO nanoparticle-supported clay minerals for electrochemical sensors,photocatalysis,and antioxidant applications

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ChemPhysMater 2024年第1期3卷 83-93页

作者： Mylarappa M N.raghavendra N.r.Bhumika C.H.Chaithra B.N.Nagalaxmi K.N.Shravana Kumara Department of Chemistry Sri Jagadguru Renukacharya College of ScienceArts&CommerceBengaluru 560009India Department of Chemistry East West Institute of TechnologyBengaluru 560091India Department of Chemistry Maharani Lakshmi Ammanni College for WomenBengaluru 560012India

In view of the current study’s demonstration of the synthesis of clay-doped ZnO composites,we present a low-cost method for producing clay-metal oxide(clay/ZnO).Utilizing the solution combustion technique,a composite of clay/ZnO was produced utilizing citric acid as both a fuel and a complexing *** hexagonal unit cell structure of the created clay/ZnO may be seen using XrD *** ZnO-infused clay was visible in FE-SEM micrographs as homogenous,sphere-shaped *** possible involvement of clay/ZnO photocatalytic activity in the UV-induced photodegradation of malachite green dye was *** 90%degradation rate shows the composite’s outstanding photocatalytic degradation *** resulting substance was electrochemically analyzed using a constructed electrode in 0.1 M KOH *** increased its sensor capabilities,which now include chemical and biomolecule sensors,and it excelled in cyclic voltammetry-based redox potential *** efficiently evaluate chemically synthesized NPs for electrochemical,sensing,and photocatalytic applications,this study intends to create a solution combustion procedure for the synthesis of clay/ZnO nanocomposite using urea as fuel.

关键词： Clay Clay/ZnO Photocatalytic Electrochemical sensors

Classification and detection of dental images using meta-learning

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World Journal of Clinical Cases 2024年第32期12卷 6559-6562页

作者： Pradeep Kumar Yadalam raghavendra Vamsi Anegundi Mario Alberto Alarcón-Sánchez Artak Heboyan Department of Periodontics Saveetha Dental College and HospitalSaveetha Institute of Medical and Technical SciencesSaveetha UniversityChennai 600077Tamil NaduIndia South Pacific Dental Institute Chilpancingo de los Bravo 39022GuerreroMexico Department of Prosthodontics Faculty of StomatologyYerevan State Medical University after Mkhitar HeratsiYerevan 0025Armenia

Meta-learning of dental X-rays is a machine learning technique that can be used to train models to perform new tasks quickly and with minimal *** of just memorizing a task,this is accomplished through teaching a model how to *** for meta-learning are typically trained on a collection of training problems,each of which has a limited number of labelled *** Xray classification tasks,including the detection of pneumonia,coronavirus disease 2019,and other disorders,have demonstrated the effectiveness of ***-learning has the benefit of allowing models to be trained on dental X-ray datasets that are too few for more conventional machine learning *** to the high cost and lengthy collection process associated with dental imaging datasets,this is significant for dental X-ray classification *** ability to train models that are more resistant to fresh input is another benefit of meta-learning.

关键词： Artificial intelligence Meta-learning Dental diagnosis Image segmentation Medical image interpretation Dental radiography

Kiran Nandivada’s Stuck Blade in a Grinder Jar Degenerative Cascade by LSTV at L5-S1

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Open Journal of Orthopedics 2024年第1期14卷 12-21页

作者： Venkata Satya Kumar Kiran Nandivada Nadavinamani Shivanand raghavendra Nandivada Nikhil Bharadwaja Moola Sohith Mahadeva reddy Ahmed Usama rizvi Nandivada Ortho Spine Surgeon & rheumatologist Abu Dhabi United Arab Emirates Senior Orthopedic Surgeon & rheumatologist Abu Dhabi United Arab Emirates General Practitioner Visakhapatnam India Department of Medicine Kamineni Institute of Medical Sciences Telangana India Department of Medicine Tbilisi State Medical University Tbilisi Georgia

Background: Mario Bertolotti, (1917) described LSTV-Lumbar spinal transitional vertebra as Bertolotti Syndrome a century ago and associated low back pain with it. Yet, it needs to be given significance in general orthopaedic practice even now, and radiologists underreport it. LSTV is a congenital anatomical anomaly that Castellvi classified into four varying types. Purpose: I titled this phenomenon “Kiran Nandivada’s stuck blade in a grinder jar degenerative cascade by LSTV at L5-S1” to clearly explain how an abnormal mega-transverse apophysis with its various variations affects the weight-bearing mechanics as the L5-S1 which is a vital junction where the maximum body weight is directed into both the sacroiliac joints and if a transitional vertebra occurs it becomes detrimental and abnormally redirects the load-bearing forces and leads to a progressive degenerative cascade both proximally and distally. As the L5 vertebral rotations and other movements of flexion, extensions, lateral flexion are stuck like a bent grinder blade, the other areas of the region are damaged progressively as the pelvis, just like the grinder motor tries to move it, resulting in overheating and maybe even a burnout results in the form of facet arthritis, disc degeneration in the normal disc above, the transitional disc at L5-S1, foraminal osteophytes causing radiculopathy, sacroiliac joint arthritis. Material and Methods: Around 200 X-rays of children and adults with this congenital anomaly have been studied between 2020 and 2023. This is a retrospective study. results: 1) Our study showed an Increased incidence of LSTV at 15%. 2) Patients ranged from asymptomatic, atypical lumbago to classical lumbago with sciatica and claudication. Findings supported facet and sacroiliac joint arthritis and the pain, relieved with physiotherapy, posture corrections, weight reduction, and lifestyle precautions, negating the need for local steroid injections, radiofrequency ablation or surgical excision as

关键词： LSTV Bertolotti Syndrome Transitional Vertebra Facet Tropism Congenital Dysplasia

Entanglement and Volume Monogamy Features of Permutation Symmetric N-Qubit Pure States with N-Distinct Spinors: GHZ and States

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Journal of Quantum Information Science 2024年第2期14卷 29-51页

作者： Sudha Alevoor.raghavendra Usha Devi Akshata Shenoy Hejamadi Hosapete Seshadri Karthik Humera Talath Bada Palaiah Govindaraja Attipat Krishnaswamy rajagopal Department of Physics Kuvempu University Shimoga India Inspire Institute Inc. Alexandria Virginia USA Department of Physics Bangalore University Bangalore India International Centre for Theory of Quantum Technologies University of Gdnsk Gdnsk Poland

We explore the entanglement features of pure symmetric N-qubit states characterized by N-distinct spinors with a particular focus on the Greenberger-Horne-Zeilinger (GHZ) states and , an equal superposition of W and obverse W states. Along with a comparison of pairwise entanglement and monogamy properties, we explore the geometric information contained in them by constructing their canonical steering ellipsoids. We obtain the volume monogamy relations satisfied by states as a function of number of qubits and compare with the maximal monogamy property of GHZ states.

关键词： Permutation Symmetric States Monogamy Pairwise Entanglement

Various Aetiologies of Non-Traumatic Coccydynia Cause Pain in the Posterior Sacrococcygeal Leg of the Pelvic Tripod: A Burden on the Healthcare Sector

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Open Journal of Orthopedics 2024年第7期14卷 334-353页

作者： Kumar Satya Nandivada Venkata Kiran Nadavinamani Shivanand raghavendra Oommen Elsy Biju Bharadwaja Nikhil Nandivada Nandivada Vaishnavi rizvi Usama Ahmed Krushi Orthopaedic Welfare Society research Wing Visakhapatnam India

Introduction: Coccydynia, television disease, and coccygodynia are the different names given to this disabling disease, which can become chronic. It was described by Simson in 1859. Coccydynia means pain at the end of the vertebral column. Non-traumatic coccydynia is a diagnosis, which is never straightforward like traumatic coccydynia because the onset is unclear, and both the patient and the unaware clinician face many challenges in treating it on time and with accuracy. Coccyx was likened to a cuckoo bird’s beak as a curved bone of fused 3 to 5 vertebrae with remnant disc material in some rare cases, unfused segments, linear scoliosis or subluxations and deformities. Stress X-rays of the coccyx in the antero-posterior and lateral views in standing and sitting reveal the “Dynamic Instability” due to congenital coccygeal morphological, pathological and mechanical variations. Material and Methods: This is a complex study having retrograde data collected from online publications from various databases, like PubMed, Embase, and Cochrane Library and also antegrade data collected from 100 patients with their consent from patients in Adam and Eve Specialised Medical Centre-based at Abu Dhabi, UAE and data was processed in the research centre of Krushi Orthopaedic Welfare Society based in India between 2014-2024 following all guidelines of Helsinki and approved by the ethics board of Krushi Orthopaedic Welfare Society. Clinical Presentation: The coccyx is painful, with aches, spasms, and an inability to sit. This affects daily activities without any particular date of onset. The onset remains insidious for the non-traumatic variety of coccydynia. Aetiology and Patho Anatomy: Non-traumatic coccydynia can be caused by a myriad of reasons, like congenital morphological variations, acquired dynamic instabilities, and hidden trauma remaining quiescent to re-surface as a strain-induced pain. radiological Presentations: Unless clarity is focused on these coccygeal views, the err

关键词： Coccydynia Coccygodynia Pelvic Floor Chordoma Pilonidal Sinus Fused Sacrococcygeal Segment Non-Traumatic Coccydynia Entrapment of Coccygeal Nerves Dural Syndrome

Multimodal Biometric Score Fusion Using Gaussian Mixture Model and Monte Carlo Method

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Journal of Computer Science & Technology 2010年第4期25卷 771-782页

作者： r.raghavendra rao Ashok G Hemantha Kumar Department of Studies in Computer Science University of Mysore Department of E&C Channabasaveshwara Institute of Technology

Multimodal biometric fusion is gaining more attention among researchers in recent days. As multimodal biometric system consolidates the information from multiple biometric sources, the effective fusion of information obtained at score level is a challenging task. In this paper, we propose a framework for optimal fusion of match scores based on Gaussian Mixture Mode] （GMM） and Monte Carlo sampling based hypothesis testing. The proposed fusion approach has the ability to handle： 1） small size of match scores as is more commonly encountered in biometric fusion, and 2） arbitrary distribution of match scores which is more pronounced when discrete scores and multimodal features are present. The proposed fusion scheme is compared with well established schemes such as Likelihood ratio （Lr） method and weighted SUM rule. Extensive experiments carried out on five different multimodal biometric databases indicate that the proposed fusion scheme achieves higher performance as compared with other contemporary state of art fusion techniques.

关键词： multimodal biometric system match score level fusion Gaussian mixture model Monte Carlo method.

An interacting two-fluid scenario for dark energy in a Bianchi type-I cosmological model

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research in Astronomy and Astrophysics 2012年第5期12卷 473-484页

作者： Triloki Singh raghavendra Chaubey Department of Applied Mathematics Institute of Technology Banaras Hindu University DST-Centre for Interdisciplinary Mathematical Sciences Faculty of Science Banaras Hindu University

We study the evolution of the dark energy parameter within a Bianchi type-I cosmological model filled with barotropic fluid and dark energy. The solutions have been obtained for power law and exponential forms of the expansion parameter （they correspond to a constant deceleration parameter in general relativity）. After a long time, the models tend to be isotropic under certain conditions.

关键词： cosmological model -- dark energy parameter -- barotropic fluid

The general class of Bianchi cosmological models with viscous fluid and particle creation in Brans-Dicke theory

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research in Astronomy and Astrophysics 2014年第5期14卷 533-552页

作者： raghavendra Chaubey Anjani Kumar Shukla DST-Centre for Interdisciplinary Mathematical Sciences Faculty of Science Banaras Hindu University Varanasi India

This paper deals with the general class of Bianchi cosmological models with bulk viscosity and particle creation described by full causal thermodynamics in Brans-Dicke theory. We discuss three types of average scale-factor solutions for the general class of Bianchi cosmological models by using a special law for the deceler- ation parameter which is linear in time with a negative slope. The exact solutions to the corresponding field equations are obtained in quadrature form and solutions to the Einstein field equations are obtained for three different physically viable cosmologies. All the physical parameters are calculated and discussed in each model.

关键词： cosmology theory

Transition Metal Free Chemoselective reduction ofα,β-Unsaturated Ketones to Saturated Ketones Using Tosyl Hydrazide as a Hydrogen Donor

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中国化学:英文版 2015年第2期33卷 181-184页

作者： Yarabally r Girish Kanchipura r.raghavendra Dasappa Nagaraja Kothanahally S Sharath Kumar Sheena Shashikanth Deparment of Studies in Chemistry ManasagangothriUniversity of MysoreMysore 570006India Department of PG Studies in Chemistry Government Science CollegeChitradurga 577501India

An efficient,inexpensive and simple method for the reduction of variousα,β-unsaturated ketones to corre-sponding saturated ketones using tosyl hydrazide as a hydrogen donor in DMF using calcium oxide powder has been reported.A variety of enones underwent reduction without forming undesirable side *** chemose-lectivity,broad functional group tolerance and good yields are the noteworthy features of this protocol.

关键词： α,β-unsaturated carbonyl compounds tosyl hydrazide transition metal free saturated ketones