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Microstructural, wettability, and corrosion behaviour of TiO_(2) thin film sputtered on aluminium

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Journal of Central South University 2024年第7期31卷 2210-2224页

作者： rajeev verma Vijay KUMAR Saurabh KANGO Amindra KHILLA rajeev GUPTA Department of Industrial and Production Engineering Dr B R Ambedkar National Institute of Technology JalandharJalandhar-144008PunjabIndia Department of Mechanical Engineering Dr B R Ambedkar National Institute of Technology JalandharJalandhar-144008PunjabIndia Department of Physics School of EngineeringUniversity of Petroleum&Energy StudiesDehradun 248007UttarakhandIndia

The study investigated the application of radiofrequency(RF)-sputtered TiO2 coatings at various temperatures to enhance the hydrophobicity and corrosion resistance of Al6061 *** research aimed to establish a correlation between the coating process and the resulting surface *** roughness and wettability were quantified with a surface profilometer and ***,chemical boiling and salt spray corrosion tests were conducted to evaluate any topographical changes during these *** analysis further involved the use of field-emission scanning electron microscopy(FESEM),energy-dispersive spectroscopy(EDS),and X-ray diffraction(XRD)techniques to characterize the deposited *** findings indicated that the TiO2 coating applied at 500℃exhibited the highest water contact angle and superior corrosion resistance compared to other *** characterization confirmed that this specific TiO_(2) coating at 500℃ effectively delays corrosion due to its hydrophobic behavior,making it durable for industrial applications.

关键词： aluminium TiO_(2)coating radiofrequency-sputtering hydrophobic corrosion

Numerical investigation on MHD Jeffery-Hamel nanofluid flow with different nanoparticles using fuzzy extension of generalized dual parametric homotopy algorithm

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Journal of Central South University 2024年第6期31卷 1915-1930页

作者： LALCHAND verma RAMAKANTA Meher Department of Mathematics Sardar Vallabhbhai National Institute of TechnologySurat-395007GujratIndia

This study considers an MHD Jeffery-Hamel nanofluid flow with distinct nanoparticles such as copper,Al_(2)O_(3)and SiO_(2)between two rigid non-parallel plane walls with the fuzzy extension of the generalized dual parametric homotopy *** nanofluids have been formulated to enhance the thermophysical characteristics of fluids,including thermal diffusivity,conductivity,convective heat transfer coefficients and *** to the presence of distinct nanofluids,a change in the value of volume fraction occurs that influences the velocity profiles of the *** short value of nanoparticles volume fraction is considered an uncertain parameter and represented in a triangular fuzzy number range among[0.0,0.1,0.2].A novel generalized dual parametric homotopy algorithm with fuzzy extension is used here to study the fuzzy velocities at various channel ***,the effectiveness of the proposed approach has been demonstrated through a comparison with the available results in the crisp case.

关键词： fuzzy number Jeffery-Hamel(J-H)flow nanofluid homotopy analysis method

Facial Expression Recognition with High Response-Based Local Directional Pattern (HR-LDP) Network

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Computers, Materials & Continua 2024年第2期78卷 2067-2086页

作者： Sherly Alphonse Harshit verma School of Computer Science and Engineering Vellore Institute of TechnologyChennaiIndia

Although lots of research has been done in recognizing facial expressions,there is still a need to increase the accuracy of facial expression recognition,particularly under uncontrolled *** use of Local Directional Patterns(LDP),which has good characteristics for emotion detection has yielded encouraging *** innova-tive end-to-end learnable High Response-based Local Directional Pattern(HR-LDP)network for facial emotion recognition is implemented by employing fixed convolutional filters in the proposed *** combining learnable convolutional layers with fixed-parameter HR-LDP layers made up of eight Kirsch filters and derivable simulated gate functions,this network considerably minimizes the number of network *** cost of the parameters in our fully linked layers is up to 64 times lesser than those in currently used deep learning-based detection *** seven well-known databases,including JAFFE,CK+,MMI,SFEW,OULU-CASIA and MUG,the recognition rates for seven-class facial expression recognition are 99.36%,99.2%,97.8%,60.4%,91.1%and 90.1%,*** results demonstrate the advantage of the proposed work over cutting-edge techniques.

关键词： Emotion classification CNN network HR-LDP

Capacity-need gap in hospital resources for varying mitigation and containment strategies in India in the face of COVID-19 pandemic

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Infectious Disease Modelling 2020年第1期5卷 608-621页

作者： Veenapani rajeev verma Anuraag Saini Sumirtha Gandhi Umakant Dash Shaffi Fazaludeen Koya Humanities and Social Sciences Indian Institute of Technology Madras600036ChennaiIndia Vantage Research 600004ChennaiIndia Boston University 02215MassachusettsUSA

Background:Due to uncertainties encompassing the transmission dynamics of COVID-19,mathematical models informing the trajectory of disease are being proposed throughout the *** pandemic is also characterized by surge in hospitalizations which has overwhelmed even the most resilient health ***,it is imperative to assess health system preparedness in tandem with need projections for comprehensive ***:We attempted this study to forecast the need for hospital resources for one year period and correspondingly assessed capacity and tipping points of Indian health system to absorb surges in need due to ***:We employed age-structured deterministic SEIR model and modified it to allow for testing and isolation capacity to forecast the need under varying *** for documented cases were made for varying degree of containment and mitigation ***,data on health resources was collated from various government ***,we computed daily turnover of each of these resources which was then adjusted for proportion of cases requiring mild,severe and critical care to arrive at maximum number of COVID-19 cases manageable by health care system of ***:Our results revealed pervasive deficits in the capacity of public health system to absorb surge in need during peak of ***,model suggests that continuing strict lockdown measures in India after mid-May 2020 would have been ineffective in suppressing total infections *** testing to 1,500,000 tests per day during projected peak(mid-September)under social-distancing measures and current test to positive rate of 9.7%would lead to more documented cases(60,000,000 to 90,000,000)culminating to surge in demand for hospital resources.A minimum allocation of 13x,70x and 37x times more beds for mild cases,ICU beds and mechanical ventilators respectively would be required to commensurate with need under that ***

关键词： Capacity-need gap Numerical model COVID-19 Policy India

Dynamics of some new solutions to the coupled DSW equations traveling horizontally on the seabed

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Journal of Ocean Engineering and Science 2024年第2期9卷 154-163页

作者： Raj Kumar Ravi Shankar verma Department of Mathematics Faculty of Engineering&TechnologyVeer Bahadur Singh Purvanchal UniversityJaunpur 222003India

The system of(1+1)-coupled Drinfel’d-Sokolov-Wilson equations describes the surface gravity waves travelling horizontally on the *** objective of the present research is to construct a new variety of analytical solutions for the *** invariants are derived with the aid of Killing form by using the optimal algebra classification via Lie symmetry *** invariant solutions involve time,space variables,and arbitrary *** adequate constraints on arbitrary constants,solutions are represented graphically to make them more applicable in designing sea *** behavior of solutions shows asymptotic,bell-shaped,bright and dark soliton,bright soliton,parabolic,bright and kink,kink,and periodic *** constructed results are novel as the reported results[26,28,29,30,33,38,42,49]can be deduced from the results derived in this *** remaining solutions derived in this study,are absolutely different from the earlier *** this study,the physical character of analytical solutions of the system could aid coastal engineers in creating models of beaches and ports.

关键词： Coupled Drinfel’d-Sokolov-Wilson model Invariants Killing form Optimal sub algebra Lie symmetry reductions

Evaluation of slope stability through rock mass classification and kinematic analysis of some major slopes along NH-1A from Ramban to Banihal, North Western Himalayas

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第1期16卷 167-182页

作者： Amit Jaiswal A.K.verma T.N.Singh Department of Civil and Environmental Engineering Indian Institute of Technology PatnaPatna801106India

The network of Himalayan roadways and highways connects some remote regions of valleys or hill slopes,which is vital for India’s socio-economic *** to natural and artificial factors,frequency of slope instabilities along the networks has been increasing over last few *** of stability of natural and artificial slopes due to construction of these connecting road networks is significant in safely executing these roads throughout the *** rock mass classification methods are generally used to assess the strength and deformability of rock *** study assesses slope stability along the NH-1A of Ramban district of North Western *** structurally and non-structurally controlled rock mass classification systems have been applied to assess the stability conditions of 14 *** evaluating the stability of these slopes,kinematic analysis was performed along with geological strength index(GSI),rock mass rating(RMR),continuous slope mass rating(CoSMR),slope mass rating(SMR),and Q-slope in the present *** SMR gives three slopes as completely unstable while CoSMR suggests four slopes as completely *** stability of all slopes was also analyzed using a design chart under dynamic and static conditions by slope stability rating(SSR)for the factor of safety(FoS)of 1.2 and 1 respectively.Q-slope with probability of failure(PoF)1%gives two slopes as stable *** slope angle has been determined based on the Q-slope safe angle equation and SSR design chart based on the *** value ranges given by different empirical classifications were RMR(37-74),GSI(27.3-58.5),SMR(11-59),and CoSMR(3.39-74.56).Good relationship was found among RMR&SSR and RMR&GSI with correlation coefficient(R 2)value of 0.815 and 0.6866,***,a comparative stability of all these slopes based on the above classification has been performed to identify the most critical slope along this road.

关键词： Rock mass classification Kinematic analysis Slope stability Himalayan road Static and dynamic conditions

Therapeutic potential and pharmacological mechanism of visnagin

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Journal of Integrative Medicine 2024年第4期22卷 399-412页

作者： Poonam Yadav Sumeet Kumar Singh Sayantap Datta Saloni verma Aarti verma Arnab Rakshit Anjana Bali Jasvinder Singh Bhatti Amit Khurana Umashanker Navik Department of Pharmacology School of Health SciencesCentral University of PunjabBathindaPunjab 151401India Department of Pharmacological and Pharmaceutical Sciences College of PharmacyUniversity of HoustonHoustonTX 77204-5000USA Department of Human Genetics and Molecular Medicine School of Health SciencesCentral University of PunjabBathindaPunjab 151401India

Visnagin is a furanochromone and one of the most important compound in the Ammi visnaga(L.)Lam(a synonym of Visnaga daucoides Gaertn.)plant,which is used to cure various *** investigations into the bioactive properties of visnagin have been studied to *** literature on visnagin demonstrates its biological properties,including anti-inflammatory,anti-diabetic,and beneficial effects in cardiovascular and renal ***,visnagin improves sperm quality parameters,stimulates steroidogenesis,and increases serum gonadotropins and testosterone levels,while decreasing proinflammatory cytokines,oxidative damage,genomic instability,and it modulates ***,visnagin has emerged as an exciting lead for further research,owing to its potential in various unmet clinical *** current review summarized its basic structure,pharmacokinetics,and pharmacological effects,focusing on its mechanisms of *** review will help to understand the potential of visnagin as an alternative treatment strategy for several diseases and provide insight into research topics that need further exploration for visnagin’s safe clinical use.

关键词： Visnagin Phytochemical Anti-inflammatory Ammi visnaga L. Visnaga daucoides Gaertn Cancer

Recent advances in reservoir characterization:Introduction

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Energy Geoscience

Energy Geoscience 2024年第2期5卷 180-182页

作者： Shib Sankar Ganguli A.Vasanthi Sumit verma CSIR-National Geophysical Research Institute(NGRI) HyderabadIndia Endeavor Energy Resources LPUSA

Reservoir characterization refers to the process of creating a comprehensive model that characterizes the reservoir based on its ability to store and produce *** includes analyzing reservoir fluid behavior under various conditions and identifying optimal production techniques to maximize hydrocarbon *** this,a holistic understanding is required that integrates data from geophysics,geostatistics,petrophysics,geology,and reservoir engineering.

关键词： reservoir geology geophysics

Dengue causing relapse of minimal change disease: A double-edged sword

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Asian Pacific Journal of Tropical Medicine 2024年第5期17卷 237-238页

作者： Sourabh Sharma Himanshu verma Sanjay Kalra Department of Nephrology VMMC&Safdarjung HospitalNew DelhiIndia Department of Endocrinology Bharti HospitalKarnalIndia

Dengue virus infection is endemic in India with seasonal *** can lead to lethal consequences with plasma leakage and/or bleeding[1,2].Dengue shock syndrome has high mortality in developing countries like *** can cause functional proteinuria and even heavy proteinuria[3-6].Though dengue has been implicated to cause glomerulonephritis[7],to the best of our knowledge,dengue as a cause of relapse of minimal change disease(MCD)has not been reported.

关键词： relapse mortality bleeding