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Analysis of the microstructure of superconducting YBCO foams by means of AFM and eBsD

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Journal of Advanced Ceramics 2014年第4期3卷 317-325页

作者： Michael Rudolf KOBLIsCHKA Anjela KOBLIsCHKA-VeNeVA e.s.reddy Gregor J.sCHMITZ Institute of experimental Physics Saarland UniversityP.O.Box 151150D-66041 SaarbrückenGermany ACCess Intzestrasse 552072 AachenGermany Nanonouvelle Pty Ltd. Marcoola QLD 4564Australia

YBa_(2)Cu_(3)O_(y)(YBCO)foam samples show an open,porous foam structure,which may have benefits for many applications of high-Tc *** the basic material of these foams is a pseudo-single crystalline material with the directional growth initiated by a seed crystal similar to standard melt-textured samples,the texture of YBCO is a very important ***,we analysed the local texture and grain orientation of the individual struts forming the foam by means of atomic force microscopy(AFM)and electron backscatter diffraction(eBsD).Due to the processing route starting with Y_(2)BaCuO_(5)(211),a two-phase analysis must be performed,so a high surface quality is necessary to enable an automated eBsD *** quality Kikuchi patterns were obtained from both the YBCO and 211 *** found an inhomogeneous distribution of the residual 211 particles,which are mainly randomly oriented and have sizes ranging between 200 nm and 15μ*** contrast to this,the YBCO matrix shows a dominating orientation with cracks with a typical distance of 1-10μ***,the analysis of strut cross-sections reveals that the entire strut is converted to the YBCO phase.

关键词： high-Tc superconductors foam microstructure atomic force microscopy(AFM) electron backscatter diffraction(eBsD) orientation

enhanced entropy generation and heat transfer characteristics of magnetic nano-encapsulated phase change materials in latent heat thermal energy storage systems

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Applied Mathematics and Mechanics(english edition) 2024年第6期45卷 1051-1070页

作者： P.s.reddy P.sReeDeVI Department of Mathematics Rajeev Gandhi Memorial College of Engineering and TechnologyNandyal 518501India

The objective of the current study is to investigate the importance of entropy generation and thermal radiation on the patterns of velocity,isentropic lines,and temperature contours within a thermal energy storage device filled with magnetic nanoencapsulated phase change materials(NePCMs).The versatile finite element method(FeM)is implemented to numerically solve the governing *** effects of various parameters,including the viscosity parameter,ranging from 1 to 3,the thermal conductivity parameter,ranging from 1 to 3,the Rayleigh parameter,ranging from 102 to 3×10^(2),the radiation number,ranging from 0.1 to 0.5,the fusion temperature,ranging from 1.0 to 1.2,the volume fraction of NePCMs,ranging from 2%to 6%,the stefan number,ranging from 1 to 5,the magnetic number,ranging from 0.1 to 0.5,and the irreversibility parameter,ranging from 0.1 to 0.5,are examined in detail on the temperature contours,isentropic lines,heat capacity ratio,and velocity ***,the heat transfer rates at both the cold and hot walls are analyzed,and the findings are presented *** results indicate that the time taken by the NePCMs to transition from solid to liquid is prolonged inside the chamber region as the fusion temperatureθf ***,the contours of the heat capacity ratio Cr decrease with the increase in the stefan number ste.

关键词： volume fraction of nano-encapsulated phase change material(NePCM) radiation stefan number heat capacity ratio entropy generation

CompactChain:an efficient stateless chain for UTXO-model blockchain

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Frontiers of Computer science 2024年第2期18卷 167-179页

作者： B swaroopa reddy T Uday Kiran reddy Department of electrical engineering Indian Institute of Technology HyderabadHyderabadTelangana 502285India

In this work,we propose a stateless blockchain called CompactChain,which compacts the entire state of the UTXO(Unspent Transaction Output)based blockchain systems into two RsA *** first accumulator is called Transaction Output(TXO)commitment which represents the TXO *** second one is called spent Transaction Output(sTXO)commitment which represents the sTXO *** this work,we discuss three algorithms:(i)To update the TXO and sTXO commitments by the *** miner also provides the proofs for the correctness of the updated commitments;(ii)To prove the transaction’s validity by providing a membership witness in TXO commitment and non-membership witness against sTXO commitment for a coin being spent by a user;(iii)To update the witness for the coin that is not yet spent;The experimental results evaluate the performance of the CompactChain in terms of time taken by a miner to update the commitments and time taken by a validator to verify the commitments and validate the *** compare the performance of CompactChain with the existing state-of-the-art works on stateless *** shows a reduction in commitments update complexity and transaction witness size which inturn reduces the mempool size and propagation latency without compromising the system throughput(Transactions per second(TPs)).

关键词： stateless blockchain RsA Accumulator sTXO commitment TXO commitment UTXO Non-interactive Proof of exponentiation(NI-Poe) Transactions per second(TPs)

Comprehensive Overview and Analytical study on Automatic Bird Repellent Laser system for Crop Protection

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Journal of Harbin Institute of Technology(New series) 2024年第1期31卷 38-53页

作者： sireesha Abotula srinivas Gorla Prasad reddy PVGD Mohankrishna s Department of Computer science and engineering GITAM Deemed to be UniversityVisakhapatnam 530045India Department of Information Technology Andhra UniversityVisakhapatnam 530003India Department of Computer science and systems engineering Andhra UniversityVisakhapatnam 530003India

Birds are a huge hazard to agriculture all around the world,causing harm to profitable field *** use a variety of techniques to keep them away,including visual,auditory,tactile,and olfactory deterrents. This study presents a comprehensive overview of current bird repellant approaches used in agricultural contexts,as well as potential new ways. The bird repellent techniques include Internet of Things technology,Deep Learning,Convolutional Neural Network,Unmanned Aerial Vehicles,Wireless sensor Networks and Laser biotechnology. This study’s goal is to find and review about previous approach towards repellent of birds in the crop fields using various technologies.

关键词： Bird repellent crop protection IoT UAV Deep Learning

secure and efficient prediction of electric vehicle charging demand usingα^(2)-LsTM and Aes-128 cryptography

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energy and AI 2024年第2期16卷 84-100页

作者： Manish Bharat Ritesh Dash K.Jyotheeswara reddy A.s.R.Murty Dhanamjayulu C. s.M.Muyeen Department of electrical and electronics engineering Visvesvaraya Technological UniversityBelgaumIndia school of electrical and electronics engineering REVA UniversityBangaloreIndia school of electrical engineering Vellore Institute of TechnologyVelloreIndia Department of electrical engineering Qatar UniversityDoha2713Qatar

In recent years,there has been a significant surge in demand for electric vehicles(eVs),necessitating accurate prediction of eV charging *** prediction plays a crucial role in evaluating its impact on the power grid,encompassing power management and peak demand *** this paper,a novel deep neural network based onα^(2)-LsTM is proposed to predict the demand for charging from electric vehicles at a 15-minute time ***,we employ Aes-128 for station quantization and secure communication with *** proposed algorithm achieves a 9.2%reduction in both the Root Mean square error(RMse)and the mean absolute error compared to LsTM,along with a 13.01%increase in demand *** present a 12-month prediction of eV charging demand at charging stations,accompanied by an effective comparative analysis of Mean Absolute Percentage error(MAPe)and Mean Percentage error(MPe)over the last five years using our proposed *** prediction analysis has been conducted using Python programming.

关键词： Charging demand forecasting Deep neural network electric vehicles LsTM Peak demand management

Vitamin D, selenium in type 2 diabetes and Hashimoto's thyroiditis: Is it effective?

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World Journal of Diabetes 2024年第5期15卷 1048-1050页

作者： Kotha sugunakar reddy Vishakha Jain sakthivadivel Varatharajan Janardhana reddy Pallavali Department of General Medicine All India Institute of Medical SciencesTelanganaHyderabad 508126India

The study by Feng et al,explores treatment approaches for these coexisting *** emphasizes the potential advantages of selenium and vitamin D supplementation but also raises methodological and patient selection *** indicate a complex interplay between interventions and disease markers,prompting the need for further *** limitations,the study offers valuable insights into managing the intricate relationship between type 2 diabetes mellitus and Hashimoto's *** authors'contributions shed light on potential treatment avenues,although careful consideration of study design and patient characteristics is warranted for future investigations in this domain.

关键词： Vitamin D selenium Type 2 diabetes Mellitus Hashimoto’s thyroiditis

Nonlinear wave dispersion in monoatomic chains with lumped and distributed masses:discrete and continuum models

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Applied Mathematics and Mechanics(english edition) 2024年第4期45卷 633-648页

作者： e.GHAVANLOO s.eL-BORGI school of Mechanical engineering Shiraz UniversityShiraz 71963-16548Iran Mechanical engineering Program Texas A&M University at QatarDoha 23874Qatar

The main objective of this paper is to investigate the influence of inertia of nonlinear springs on the dispersion behavior of discrete monoatomic chains with lumped and distributed *** developed model can represent the wave propagation problem in a non-homogeneous material consisting of heavy inclusions embedded in a *** inclusions are idealized by lumped masses,and the matrix between adjacent inclusions is modeled by a nonlinear spring with distributed ***,the model is capable of depicting the wave propagation in bi-material bars,wherein the first material is represented by a rigid particle and the second one is represented by a nonlinear spring with distributed *** discrete model of the nonlinear monoatomic chain with lumped and distributed masses is first considered,and a closed-form expression of the dispersion relation is obtained by the second-order Lindstedt-Poincare method(LPM).Next,a continuum model for the nonlinear monoatomic chain is derived directly from its discrete lattice model by a suitable continualization *** subsequent use of the second-order method of multiple scales(MMs)facilitates the derivation of the corresponding nonlinear dispersion relation in a closed *** novelties of the present study consist of(i)considering the inertia of nonlinear springs on the dispersion behavior of the discrete mass-spring chains;(ii)developing the second-order LPM for the wave propagation in the discrete chains;and(iii)deriving a continuum model for the nonlinear monoatomic chains with lumped and distributed ***,a parametric study is conducted to examine the effects of the design parameters and the distributed spring mass on the nonlinear dispersion relations and phase velocities obtained from both the discrete and continuum *** parameters include the ratio of the spring mass to the lumped mass,the nonlinear stiffness coefficient of the spring,and the wave amplitude.

关键词： nonlinear mass-spring chain discrete model continuum model LindstedtPoincare method(LPM) method of multiple scales(MMs) dispersion phase velocity

Prediction,prevention and management of gastroesophageal reflux after per-oral endoscopic myotomy:An update

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World Journal of Gastroenterology 2024年第9期30卷 1096-1107页

作者： Zaheer Nabi Pradev Inavolu Nageshwar reddy Duvvuru Department of Gastroenterology Asian Institute of GastroenterologyHyderabad 500082TelanganaIndia Department of Medical Gastroenterology Asian Institute of GastroenterologyHyderabad 500032TelanganaIndia

Achalasia cardia,the most prevalent primary esophageal motility disorder,is predominantly characterized by symptoms of dysphagia and *** principal therapeutic approaches for achalasia encompass pneumatic dilatation(PD),Heller's myotomy,and the more recent per-oral endoscopic myotomy(POeM).POeM has been substantiated as a safe and efficacious modality for the management of *** POeM demonstrates superior efficacy compared to PD and an efficacy parallel to Heller's myotomy,the incidence of gastroesophageal reflux disease(GeRD)following POeM is notably higher than with the aforementioned *** symptomatic reflux post-POeM is relatively infrequent,the significant occurrence of erosive esophagitis and heightened esophageal acid exposure necessitates vigilant monitoring to preclude long-term GeRD-related *** advancements in the field have enhanced our comprehension of the risk factors,diagnostic methodologies,preventative strategies,and therapeutic management of GeRD subsequent to *** review focuses on the limitations inherent in the 24-h pH study for evaluating post-POeM reflux,potential modifications in the POeM technique to mitigate GeRD risk,and the strategies for managing reflux following POeM.

关键词： Achalasia cardia Per-oral endoscopic myotomy Gastroesophageal reflux esophagitis Gastroesophageal reflux disease

Ag-integrated mixed metallic Co-Fe-Ni-Mn hydroxide composite as advanced electrode for high-performance hybrid supercapacitors

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Journal of energy Chemistry 2024年第1期88卷 579-591,I0013页

作者： Anki reddy Mule Bhimanaboina Ramulu shaik Junied Arbaz Anand Kurakula Jae su Yu Department of electronics and Information Convergence engineering Institute for Wearable Convergence ElectronicsKyung Hee UniversityYongin-siGyeonggi-do 17104Republic of Korea

Direct growth of redox-active noble metals and rational design of multifunctional electrochemical active materials play crucial roles in developing novel electrode materials for energy storage *** this regard,silver(Ag)has attracted great attention in the design of efficient *** by the house/building process,which means electing the right land,it lays a strong foundation and building essential columns for a complex ***,we report the construction of multifaceted heterostructure cobalt-iron hydroxide(CFOH)nanowires(NWs)@nickel cobalt manganese hydroxides and/or hydrate(NCMOH)nanosheets(Nss)on the Ag-deposited nickel foam and carbon cloth(i.e.,Ag/NF and Ag/CC)***,the formation and charge storage mechanism of Ag are described,and these contribute to good conductive and redox chemistry *** switching architectural integrity of metal and redox materials on metallic frames may significantly boost charge storage and rate performance with noticeable drop in *** as-fabricated Ag@CFOH@NCMOH/NF electrode delivered superior areal capacity value of 2081.9μA h cm^(-2)at 5 mA cm^(-2).Moreover,as-assembled hybrid cell based on NF(HC/NF)device exhibited remarkable areal capacity value of 1.82 mA h cm^(-2)at 5 mA cm^(-2)with excellent rate capability of 74.77%even at 70 mA cm^(-2)Furthermore,HC/NF device achieved maximum energy and power densities of 1.39 mW h cm^(-2)and 42.35 mW cm^(-2),*** verify practical applicability,both devices were also tested to serve as a self-charging station for various portable electronic devices.

关键词： Current collectors Redox-active silver Transition metal-hydroxides electrochemical performance Hybrid supercapacitor