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Wormhole solutions under the effect of dark matter in f(R,L_(m))gravity

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Communications in Theoretical Physics 2024年第5期76卷 102-113页

作者： Lakhan V Jaybhaye Moreshwar Tayde Pk.sahoo Department of Mathematics Birla Institute of Technology and Science-PilaniHyderabad CampusHyderabad-500078India

In the background of f(R,L_(m))gravity,this work investigates three distinct dark matter halo profiles to test the possibility of generalised wormhole geometry within the galactic halo *** current study aims to accomplish these goals by examining various dark matter profiles including universal rotation curves(URC),Navarro-Frenk-White(NFW)model-Ⅰ,and NFW model-Ⅱinside two distinct f(R,L_(m))gravity *** to the f(R,L_(m))=R/2+L^(a)_(m)model,the dark matter(DM)halo density profiles produce suitable shape functions that meet all the necessary requirements for exhibiting the wormhole geometries with appropriate choice of free *** addition,to examine DM profiles under the f(R,L_(m))=R/2+(1+λR)L_(m) model,we consider a specific shape ***,we observed that the derived solution from both two models violates the null energy constraints,confirming that the DM supports wormholes to maintain in the galactic halo.

关键词： f(R L_(m))gravity wormhole dark matter(Some figures may appear in colour only in the online journal)

Dynamical system analysis of Dirac-Born-Infeld scalar field cosmology in coincident f(Q) gravity

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Chinese Physics C 2024年第09期48卷 203-213页

作者： Sayantan Ghosh Raja Solanki P.k.sahoo Department of Mathematics Birla Institute of Technology and Science-PilaniHyderabad Campus

In this article,we present a dynamical system analysis of a Dirac-Born-Infeld scalar field in a modified f(Q) gravity *** considered a polynomial form of modified gravity,used two different types of scalar potential,polynomial and exponential,and found a closed autonomous dynamical system of *** analyzed the fixed points of such a system and evaluated the conditions under which deceleration to late-time acceleration occurs in this *** note the similarity of the two models and show that our result is consistent with a previous study on Einstein s *** also investigated the phenomenological implications of our models by plotting EoS(ω),energy density(Ω),and deceleration parameter(q) *** e-fold time and comparing to the present *** conclude the paper by observing how the dynamical system analysis differs in the modified f(Q) gravity,and present the future scope of our research.

关键词： dark energy Dirac-Born-Infeld field dynamical system analysis f(Q) gravity

Analysis and Optimization of Operational and Pollutant Attributes of Diesel Engine with CNT-Infused Orange Peel Biodiesel-Diesel Blend Fuel

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Journal of Thermal Science 2024年第2期33卷 761-778页

作者： Ranjeet RAI R.R.sahoo Mechanical Engineering Department GLA UniversityMathura281406India Mechanical Engineering Department IIT(BHU)Varanasi221005India

The current study is performed to find sustainable solutions for the future of transportation and environmental *** conventional methods and experimental design table(L16 Orthogonal Array)techniques have been employed to examine and optimize a diesel-powered engine's operational and pollutant *** L16 Orthogonal Array is obtained through Taguchi's experimental design approach using Minitab 16 *** experimental design incorporated three control variables,namely engine speed,fuel type,and engine load,each with four *** operational parameters,namely brake thermal efficiency(BTE)and brake specific fuel consumption(BSFC),as well as the emission characteristics,including hydrocarbon(HC),carbon monoxide(CO),nitrogen oxide(NO),and smoke emissions,were acquired using the L16 orthogonal array(OA) and subsequently *** utilization of methodologies such as signal-to-noise(S/N) ratio and grey analysis was employed to determine the optimal operational state of the engine to achieve maximum performance while minimizing *** engine's ideal state of operation,in terms of BTE and BSFC,was determined to be at 75% engine load,1000 r/min engine speed,and using 10^(-4)(in vol) carbon nanotube incorporated 20% orange peel biodiesel(OPB20CNT100) blended fuel(A3-B1-C4).The study indicated that engine load significantly influenced BTE and BSFC,with 84.05% and 87.79% contribution factors,*** 25% engine load,1000 r/min,and OPB20CNT100 fuel(A1-B1-C4) CO,smoke,NO,and HC emissions were the *** load affects emissions the *** BSFC increased 3.10% and NO emissions 1.77%.BTE,CO,smoke,and HC emissions decreased by 1.9%,12.29%,47.05%,and 47.22%,respectively,at optimal operating conditions concerning diesel *** study shows that Taguchi-Grey's experimental design optimizes diesel engine operational and pollutant *** outcomes revealed that orange peel biodiesel infused with CNT can replace diesel fuel in a

关键词： Taguchi-Grey method OPB20CNT100 transesterification S/N ratio GRG HC CO and NO

Study of damage behavior and repair effectiveness of patch repaired carbon fiber laminate under quasi-static indentation loading

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Defence Technology（防务技术） 2024年第4期34卷 29-41页

作者： Alok kumar Chinmaya kumar sahoo A.Arockiarajan Department of Applied Mechanics Indian Institute of Technology MadrasChennai 600036India

Damage caused due to low-velocity impacts in composites leads to substantial deterioration in their residual strength and eventually provokes structural *** work presents an experimental investigation on the effects of different patch and parent laminate stacking sequences on the enhancement of impact strength of Carbon Fiber Reinforced Polymers(CFRP)composites by utilising the adhesively bonded external patch repair *** evolution study is also performed with the aid of Acoustic Emission(AE).Two different quasi-isotropic configurations were selected for the parent laminate,viz.,[45°/45°/0°/0°]s and[45°/0°/45°/0°]*** Static Indentation(QSI)test was performed on both the pristine laminates,and damage areas were detected by using the C-scan inspection *** laminates were repaired by using a single-sided patch of two different configurations,viz.,[45°/45°/45°/45°]and[45°/0°/0°/45°],and employing a circular plug to fill the damaged *** different combinations of repaired laminates with two configurations of each parent and patch laminate were produced,which were further subjected to the QSI *** results reveal the effectiveness of the repair method,as all the repaired laminates show higher impact resistance compared to the respective pristine *** of[45°/0°/0°/45°]configuration when repaired by taking[45°/45°/0°/0°]s and[45°/0°/45°/0°]s as parents exhibited 68%and 73%higher peak loads,respectively,than the respective pristine ***,parent and patch of configuration[45°/0°/45°/0°]s and[45°/0°/0°/45°],respectively,attain the highest peak load,whereas[45°/45°/0°/0°]s and[45°/45°/45°/45°]combinations possess the most gradual decrease in the load.

关键词： Carbon fiber reinforced polymers(CFRP) Quasi-isotropic laminate Quasi static indentation(QSI) Acoustic emission(AE) Composite repair

Advancements in medical treatment for pancreatic neuroendocrine tumors:A beacon of hope

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World Journal of Gastroenterology 2024年第12期30卷 1670-1675页

作者： Somdatta Giri Jayaprakash sahoo Department of Endocrinology and Metabolism Jawaharlal Institute of Postgraduate Medical Education and ResearchPuducherry605006India

This editorial highlights the remarkable advancements in medical treatment strategies for pancreatic neuroendocrine tumors(pan-NETs),emphasizing tailored approaches for specific *** surgery and somatostatin analogs(SSAs)play pivotal roles in managing tumors,while palliative options such as molecular targeted therapy,peptide receptor radionuclide therapy,and chemotherapy are reserved for SSA-refractory ***,insul-inomas,glucagonomas,carcinoid tumors and VIPomas necessitate distinct thera-peutic *** the genetic basis of pan-NETs and exploring immunotherapies could lead to promising avenues for future *** review underscores the evolving landscape of pan-NET treatment,offering renewed hope and improved outcomes for patients facing this complex disease.

关键词： Pancreatic neuroendocrine tumor Medical management Somatostatin analog Immunotherapy Everolimus

Charting the course:India's health expenditure projections for 2035

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Global Health Journal 2024年第2期8卷 58-66页

作者： Pragyan Monalisa sahoo Himanshu Sekhar Rout Department of Analytical&Applied Economics Utkal UniversityBhubaneswarOdishaIndia Department of Analytical and Applied Economics&RUSA Centre of Excellence in Public Policy and Governance Utkal UniversityVani ViharBhubaneswarOdishaIndia

Objectives Understanding past trends and forecasting future changes in health spending is vital for planning and reducing reliance on out-of-pocket(OOP)*** current study analyzed health expenditure patterns in India and forecasted future trends and patterns until *** Data on health expenditure in India from 2000 to 2019 was collected from the Organisation for Economic Co-operation and Development(OECD)iLibrary and National Health Accounts 2019 *** domestic product(GDP)data from the World Bank was also *** statistics analyzed the composition and pattern,while the exponential smoothing model forecasted future health *** The findings revealed that expenditure made by OOP is the primary health financing source,followed by government and pre-paid private *** percentage of GDP allocated to total health expenditure remains stable,while the per capita health expenditure *** in expenditure among states are observed,with karnataka relying heavily on pre-paid private *** projections suggest a decline in per capita and total health expenditure as a share of GDP,with a slight increase in the government’s ***-paid private expenditure per capita and OOP health expenditure as a share of the total is projected to remain relatively constant but still high in absolute *** The study highlights variations in health spending in India,characterized by high OOP spending,limited public coverage,and a need for investments,and reforms to improve healthcare access and equity.

关键词： Health expenditure Health spending Health financing Forecasting Exponential smoothing India

NONCONVENTIONAL EMULSION POLYMERIZATION OF ACRYLONITRILE CATALYZED BY in situ METAL COMPLEX

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Chinese Journal of Polymer Science 2007年第2期25卷 145-152页

作者： Bijayashree Samal Prafulla k.sahoo Department of Chemistry Utkal UniversityVani ViharBhubaneswar 751004India

Nano-sized polyacrylonitrile （PAN） particles were prepared under the catalytic effect of in situ developed CoCl2/EDTA complex with ammonium persulfate as the initiator in the absence of any added emulsifier. The emulsion polymerization was studied at varying concentrations of the initiator, monomer, complex and solvent over a temperature range of 30-70℃. The overall activation energy （Ea, 49.79 kJ/mol）, energy of dissociation of initiator （Ed, 82.68 kJ/mol）, number of micelles （0.163 × 10^18） and the viscosity average molecular weight of the polymer were computed. The distribution of particle sizes was determined by transmission electron microscopy （TEM）. It was found that the oil-in-water polymerization was stabilized by the presence of the CoCl2/EDTA in situ complex reducing the particle size into the nano order. The average diameters of PAN nano particles, obtained by TEM, were in the range of 50-150 nm at the maximum conversion. The experimental particle size was mainly dependent on the concentration of the complex and temperature.

关键词： Nonconventional emulsion CoCl2/EDTA in situ complex Nano particles kinetics TEM.

Improved reservoir characterization by means of supervised machine learning and model-based seismic impedance inversion in the Penobscot field,Scotian Basin

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Energy Geoscience

Energy Geoscience 2024年第2期5卷 183-201页

作者： Satya Narayan Soumyashree Debasis sahoo Soumitra kar Sanjit kumar Pal Subhra kangsabanik Oil and Natural Gas Corporation(ONGC)Limited DehradunIndia Department of Applied Geophysics IIT(ISM)DhanbadIndia

The present research work attempted to delineate and characterize the reservoir facies from the Dawson Canyon Formation in the Penobscot field,Scotian *** integrated study of instantaneous frequency,P-impedance,volume of clay and neutron-porosity attributes,and structural framework was done to unravel the Late Cretaceous depositional system and reservoir facies distribution patterns within the study *** strikes were found in the EW and NEE-SWW directions indicating the dominant course of tectonic activities during the Late Cretaceous period in the region.P-impedance was estimated using model-based seismic *** properties such as the neutron porosity(NPHI)and volume of clay(VCL)were estimated using the multilayer perceptron neural network with high ***,a combination of low instantaneous frequency(15-30 Hz),moderate to high impedance(7000-9500 gm/cc*m/s),low neutron porosity(27%-40%)and low volume of clay(40%-60%),suggests fair-to-good sandstone development in the Dawson Canyon *** calibration with the welllog data,it is found that further lowering in these attribute responses signifies the clean sandstone facies possibly containing *** present study suggests that the shale lithofacies dominates the Late Cretaceous deposition(Dawson Canyon Formation)in the Penobscot field,Scotian *** faults and overlying shale facies provide structural and stratigraphic seals and act as a suitable hydrocarbon entrapment mechanism in the Dawson Canyon Formation's *** present research advocates the integrated analysis of multi-attributes estimated using different methods to minimize the risk involved in hydrocarbon exploration.

关键词： Reservoir characterization Model-based inversion Multilayer perceptron(MLP) Impedance Petrophysical properties Scotian Basin

Multidisciplinary approach toward enhanced recovery after surgery for total knee arthroplasty improves outcomes

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World Journal of Clinical Cases 2024年第9期12卷 1549-1554页

作者： Deb Sanjay Nag Amlan Swain Seelora Sahu Ayaskant sahoo Gunjan Wadhwa Department of Anaesthesiology Tata Main HospitalJamshedpur 831001India Department of Anaesthesiology Manipal Tata Medical CollegeJamshedpur 831001India

knee osteoarthritis is a degenerative disorder of the knee,which leads to joint pain,stiffness,and inactivity and significantly affects the quality of *** an increased prevalence of obesity and greater life expectancies,total knee arthroplasty(TkA)is now one of the major arthroplasty surgeries performed for knee *** enhanced recovery after surgery(ERAS)was introduced in TkA,clinical outcomes were enhanced and the economic burden on the healthcare system was *** is an evidence-based scientific protocol aimed at ameliorating the surgical stress *** aims to enhance the recovery phase,which encompasses multidisciplinary strategies at every step of perioperative care,including the rehabilitation *** of ERAS in TkA aids in reducing the length of hospital stay,improving pain management,reducing perioperative complications,and enhancing patient *** collaboration,integrating the expertise of anesthesiologists,orthopedic surgeons,nursing personnel,and other healthcare professionals,is the cornerstone of ERAS in patients undergoing TkA.

关键词： Arthroplasty Replacement knee Recovery of function Anesthesia Care Nursing