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Journal of Modern Physics 2012年第5期3卷 398-403页

作者： Shahida Akhter Deba Prasad Paul Md. Abdul Hakim Shireen Akhter Sheikh Manjura Hoque hari narayan das Department of Physics University of Chittagong Materials Science Division Atomic Energy Centre

Cu-Zn ferrite with general formula of Cu1-xZnxFe2 O4 with a range from x = 0.0 to 0.7 (in steps of 0.1) was prepared by using standard ceramic techniques. The confirmation of sin-gle-phase formation was carried out by employing X-ray diffraction technique. Some of the magnetic properties were measured, such as Curie temperature, the complex permeability and low field hysteresis loop. It was found that Curie temperature Tc decreases from 464?C to 20?C. The real part of initial permeability, μ′ in-crease with increasing Zn contents up to x = 0.5 after that it decreases with higher Zn content. Low field hysteresis measurement was carried out at room temperature and this measurement with the increase of Zn2+ ions yields the increase of saturation magnetic induction (By) and magnetic remanance (Br) up to x = 0.4 thereafter it decreases. The decrease in corecivity (Hc) and hysteresis loss is observed for all samples. In view of this, the possible changes in magnetic properties with the increase in Zn concentration are un-dertaken.

关键词： XRD Curie Temperature Initial Permeability Hysteresis Loop Coercivity

Biological perspectives in geotechnics:Application and monitoring

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第7期16卷 2854-2878页

作者： Partha narayan Mishra Surabhi Jain Thierry Bore Ilhan Chang Yeong-Man Kwon Yijie Wang Hirak Ranjan dash Ashutosh Kumar Satyam Tiwari Ningjun Jiang Sarat Kumar das Alexander Scheuermann Department of Civil Engineering Indian Institute of Technology KanpurKanpur208016India School of Civil Engineering University of QueenslandSt LuciaQLD4072Australia Department of Civil Engineering Indian Institute of Technology DhanbadDhanbad826004India Department of Civil System Engineering Ajou UniversitySuwon-si16499Republic of Korea School of Engineering and IT University of New South WalesCanberraACT2600Australia Department of Civil and Environmental Engineering Northwestern UniversityEvanstonIL60208USA Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong KongChina National Forensic Sciences University New Delhi110085India Southeast University Nanjing211189China

This paper builds on exploring the applications of biomediated pathways to solve geotechnical ***,the state of the art of biological remediation strategies including microbial remediation and phytoremediation have been introduced and critically reviewed in the context of decontaminating the ***,biopolymerisation,biomineralisation and bioneutralisation processes have been depicted with a special emphasis on the applications including but not limited to soil stabilisation,soil erosion prevention,anti-desertification and pH *** of these methods have their own limitations and bottlenecks while scaling up,and these challenges have been summarised and some possible paths to overcome the challenges have also been *** state of the art of electromagnetic(EM)monitoring methods to capture the effects of biomediation on spatio-temporal soil properties are then highlighted as a non-invasive and rapid pathway to track the progress of biomediated soil ***,each of the technologies discussed have been evaluated for their maturity level using the principles of technology readiness level(TRL).A majority of the technologies amounting to around 77%are still in the TRL 4e7,*** the valley of *** is thus evident that development of these technologies needs to be supported with appropriate funding for improving their maturity to a level of industrial deployment.

关键词： Biogeotechnics Bioremediation Phytoremediation Biopolymers Biomineralisation Electromagnetic(EM)methods technology readiness level(TRL)

Emergence of carbonaceous material for hydrogen storage:an overview

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Clean Energy 2024年第4期8卷 147-168页

作者： Khemlata Soni narayan Lal Panwar Pranay Rajendra Lanjekar Department of Renewable Energy Engineering Maharana Pratap University of Agriculture and TechnologyUdaipurRajasthan313001India

Hydrogen has gained enormous relevance due to its lower carbon footprint and its potential role in balancing energy supply and de*** is being considered as a sustainable substitute for conventional *** generation of hydrogen using renewable energy sources is still in development,with a significant challenge lying in the efficient and safe storage of hydrogen due to its low energy *** challenge hinders the widespread adoption of *** and liquefaction methods of storage face issues of losses that reduce their *** technology for hydrogen storage has advanced significantly in the past few years,driven by recent enhancements in synthesizing carbonaceous materials with hydrogen storage *** article critically reviews novel carbonaceous materials for hydrogen storage,including biochar,activated carbon,carbon nanotubes,carbon nanocomposites,carbon aerogel,fullerenes,MXenes,graphite,graphene and its *** hydrogen adsorption using microporous materials,such as activated carbons,is crucial,sparking interest in economically viable options for hydrogen *** this,a significant amount of work still needs to be accomplished before the potential and advantages of the hydrogen economy can be fully realized and utilized by manufacturers and academics.

关键词： hydrogen clean energy hydrogen storage adsorption-desorption phenomenon carbonaceous materials

Early Paleozoic basement diorite of arc-magmatism from Kutch basin, Western India

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Acta Geochimica 2024年第2期43卷 296-307页

作者： Piyush Gupta Sandeep Singh Shakti Singh Rathore Argha narayan Sarkar Geochronology Laboratory KDMIPEOil and Natural Gas Corporation Ltd.9Kaulagarh RoadDehradun 248195India Department of Earth Sciences Indian Institute of TechnologyRoorkee 247667India

In this study,we report for theﬁrst time an Early Palaeozoic basement diorite from the drilled well Nirona-A in the Banni Half-Graben of the Kutch basin,western *** 40Ar–39Ar dates provided a plateau age of 441.84±2.66 Ma and another pseudo plateau of 441.28±5.82 to 388.08±16.65 Ma for the basement *** ages constrain the basement formation age to the Late Ordovician-Early Silurian *** obtained basement ages are correlatable with the later part of Cambro-Ordovician alkaline magmatism that has been reported from the Huqf area in Central Oman,whereas their lithological and petrographic correlativity with base-ment diorites occurring in the Dinsi Body of Nagar Parkar igneous complex in Pakistan can also be *** geochemical studies characterized the diorite with enrich-ment of LILE(Rb,Ba,and K)and LREE(La,Ce,Nd),strong depletion of HFSE(Nb,Sr,P,and Ti),along with weakly negative Eu *** geochemical signatures indicate their petrogenetic afﬁliation with mantle-derived magmas,as well as their tectonic setting to be arc-related,having post-collisional continental-arc type afﬁ****440 Ma basement of Kutch,therefore,appears to rep-resent the later thermal event associated with the reworked Neoproterozoic subduction-related suite from Greater India’s northwest edge,which has implications for Gond-wana assembly in the northwest Indian subcontinent.

关键词： Kutch basin 40Ar–39Ar ages Early palaeozoic basement Continental-arc magmatism Calc-alkaline magmatism

Assessment of soil erosion in the Irga watershed on the eastern edge of the Chota Nagpur Plateau,India

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Regional Sustainability 2024年第1期5卷 54-68页

作者： Ratan PAL Buddhadev HEMBRAM narayan Chandra JANA Department of Geography the University of BurdwanWest Bengal-713104India

Human activities to improve the quality of life have accelerated the natural rate of soil *** turn,these natural disasters have taken a great impact on *** activities,particularly the conversion of vegetated land into agricultural land and built-up area,stand out as primary contributors to soil *** present study investigated the risk of soil erosion in the Irga watershed located on the eastern fringe of the Chota Nagpur Plateau in Jharkhand,India,which is dominated by sandy loam and sandy clay loam soil with low soil organic carbon(SOC)*** study used the Revised Universal Soil Loss Equation(RUSLE)and Geographical Information System(GIS)technique to determine the rate of soil *** five parameters(rainfall-runoff erosivity(R)factor,soil erodibility(K)factor,slope length and steepness(LS)factor,cover-management(C)factor,and support practice(P)factor)of the RUSLE were applied to present a more accurate distribution characteristic of soil erosion in the Irga *** result shows that the R factor is positively correlated with rainfall and follows the same distribution pattern as the *** K factor values in the northern part of the study area are relatively low,while they are relatively high in the southern *** mean value of the LS factor is 2.74,which is low due to the flat terrain of the Irga *** is a negative linear correlation between Normalized Difference Vegetation Index(NDVI)and the C factor,and the high values of the C factor are observed in places with low *** mean value of the P factor is 0.210,with a range from 0.000 to *** calculating all parameters,we obtained the average soil erosion rate of 1.43 t/(hm^(2)•a),with the highest rate reaching as high as 32.71 t/(hm^(2)•a).Therefore,the study area faces a low risk of soil ***,preventative measures are essential to avoid future damage to productive and constructive activities caused by soil *** study also ident

关键词： Soil erosion Soil organic carbon Rainfall-runoff erosivity factor Soil erodibility factor Slope length and steepness factor Cover-management factor Support practice factor Irga watershed

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

An Improved Lung Cancer Segmentation Based on Nature-Inspired Optimization Approaches

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Computer Modeling in Engineering & Sciences 2024年第2期138卷 1051-1075页

作者： Shazia Shamas Surya narayan Panda Ishu Sharma Kalpna Guleria Aman Singh Ahmad Ali AlZubi Mallak Ahmad AlZubi Chitkara University Institute of Engineering and Technology Chitkara UniversityRajpuraPunjab140401India Higher Polytechnic School Universidad Europea del AtlánticoC/Isabel Torres 21Santander39011Spain Department of Engineering Universidad Internacional IberoamericanaAreciboPR00613USA Uttaranchal Institute of Technology Uttaranchal UniversityDehradunUttarakhand248007India Computer Science Department King Saud UniversityRiyadhSaudi Arabia Faculty of Medicine Jordan University of Science and TechnologyIrbidJordan

The distinction and precise identification of tumor nodules are crucial for timely lung cancer diagnosis andplanning intervention. This research work addresses the major issues pertaining to the field of medical imageprocessing while focusing on lung cancer Computed Tomography (CT) images. In this context, the paper proposesan improved lung cancer segmentation technique based on the strengths of nature-inspired approaches. Thebetter resolution of CT is exploited to distinguish healthy subjects from those who have lung cancer. In thisprocess, the visual challenges of the K-means are addressed with the integration of four nature-inspired swarmintelligent techniques. The techniques experimented in this paper are K-means with Artificial Bee Colony (ABC),K-means with Cuckoo Search Algorithm (CSA), K-means with Particle Swarm Optimization (PSO), and Kmeanswith Firefly Algorithm (FFA). The testing and evaluation are performed on Early Lung Cancer ActionProgram (ELCAP) database. The simulation analysis is performed using lung cancer images set against metrics:precision, sensitivity, specificity, f-measure, accuracy,Matthews Correlation Coefficient (MCC), Jaccard, and *** detailed evaluation shows that the K-means with Cuckoo Search Algorithm (CSA) significantly improved thequality of lung cancer segmentation in comparison to the other optimization approaches utilized for lung cancerimages. The results exhibit that the proposed approach (K-means with CSA) achieves precision, sensitivity, and Fmeasureof 0.942, 0.964, and 0.953, respectively, and an average accuracy of 93%. The experimental results prove thatK-meanswithABC,K-meanswith PSO,K-meanswith FFA, andK-meanswithCSAhave achieved an improvementof 10.8%, 13.38%, 13.93%, and 15.7%, respectively, for accuracy measure in comparison to K-means segmentationfor lung cancer images. Further, it is highlighted that the proposed K-means with CSA have achieved a significantimprovement in accuracy, hence can be utilized by resea

关键词： Lesion lung cancer segmentation medical imaging meta-heuristic Artificial Bee Colony(ABC) Cuckoo Search Algorithm(CSA) Particle Swarm Optimization(PSO) Firefly Algorithm(FFA) segmentation

Recombinant vaccines:Current updates and future prospects

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Asian Pacific Journal of Tropical Medicine 2024年第8期17卷 338-350页

作者： Vivek Kumar Anuj Verma Riddhi Singh Priyanshi Garg Santosh Kumar Sharma Himanshu narayan Singh Santosh Kumar Mishra Sanjay Kumar Department of Allied Medical Sciences School of Allied Medical SciencesLovely Professional UniversityPhagwaraPunjabIndia Bioengineering Division of Department of Bioscience and Biomedical EngineeringIndian Institute of Technology BhilaiChhattisgarhIndia Department of Biotechnology IMS Engineering CollegeGhaziabadU.P.India Department of Chemistry and Biochemistry University of WindsorOntario N9B3P4Canada Biological and Biocomputational Laboratory Department of Life SciencesSharda School of Basic Sciences and ResearchSharda UniversityGreater NoidaU.P.India Department of System Biology Columbia University Irving Medical CenterNew YorkNY 10032USA Department of Life Sciences Sharda School of Basic Sciences and ResearchSharda UniversityGreater NoidaU.P.India

Recombinant technology-based vaccines have emerged as a highly effective way to prevent a wide range of *** technology improved vaccine manufacturing,rendering it more efficient and *** vaccines have multiple advantages compared to conventional *** pandemic has heightened awareness of the advantages of these vaccine technologies;trust and acceptance of these vaccines are steadily growing *** work offers an overview of the prospects and advantages associated with recombinant ***,it discusses some of the challenges likely to arise in the *** ability to target diverse pathogen classes underscores their contributions to preventing previously untreatable diseases(especially vector-borne and emerging diseases)and hurdles faced throughout the vaccine development process,especially in enhancing the effectiveness of these ***,their compatibility with emerging vaccination platforms of the future like virus-like particles and CRISPR/Cas9 for the production of next-generation vaccines may offer many *** review also reviewed the hurdles faced throughout the vaccine development process,especially in enhancing the effectiveness of these vaccines against vector-borne diseases,emerging diseases,and untreatable diseases with high mortality rates like AIDS as well as cancer.

关键词： Malaria Dengue Emerging diseases Immunoinformatics Virus-like particles CRISPR-Cas9

Utilising continuous glucose monitoring for glycemic control in diabetic kidney disease

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World Journal of Diabetes 2024年第10期15卷 2006-2009页

作者： Vamsidhar Veeranki narayan Prasad Department of Nephrology and Renal Transplantation Sanjay Gandhi Postgraduate Institute of Medical SciencesLucknow 226014Uttar PradeshIndia

In this editorial,we comment on the article by Zhang et *** kidney disease(CKD)presents a significant challenge in managing glycemic control,especially in diabetic patients with diabetic kidney disease undergoing dialysis or kidney *** markers like glycated haemoglobin(HbA1c)may not accurately reflect glycemic fluctuations in these populations due to factors such as anaemia and kidney *** comprehensive review discusses the limitations of HbA1c and explores alternative methods,such as continuous glucose monitoring(CGM)in CKD *** emerges as a promising technology offering real-time or retrospective glucose concentration measure-ments and overcoming the limitations of *** studies demonstrate the utility of CGM in different CKD settings,including hemodialysis and peritoneal dialysis patients,as well as kidney transplant *** challenges like sensor accuracy fluctuation,CGM proves valuable in monitoring glycemic trends and mitigating the risk of hypo-and hyperglycemia,to which CKD patients are *** review also addresses the limitations of CGM in CKD patients,emphasizing the need for further research to optimize its utilization in clinical ***,this review advocates for integrating CGM into managing glycemia in CKD patients,highlighting its superiority over traditional markers and urging clinicians to consider CGM a valuable tool in their armamentarium.

关键词： Chronic kidney disease Diabetic kidney disease Glycemic control Continuous glucose monitoring Glycated hemoglobin Glycemic variability

Amebic liver abscess: An update

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World Journal of Hepatology 2024年第3期16卷 316-330页

作者： Ramesh Kumar Rishabh Patel Rajeev Nayan Priyadarshi Ruchika narayan Tanmoy Maji Utpal Anand Jinit R Soni Department of Gastroenterology All India Institute of Medical SciencesPatna 801507India Department of Radiodiagnosis All India Institute of Medical SciencesPatna 801507India Department of Surgical Gastroenterology All India Institute of Medical SciencesPatna 801507India

Amebic liver abscess(ALA)is still a common problem in the tropical world,where it affects over three-quarters of patients with liver *** is caused by an anaerobic protozoan Entamoeba hystolytica,which primarily colonises the *** is a non-suppurative infection of the liver consisting primarily of dead hepatocytes and cellular *** of the male gender,during their reproductive years,are most prone to ALA,and this appears to be due to a poorly mounted immune response linked to serum testosterone *** is more common in the right lobe of the liver,is strongly associated with alcohol consumption,and can heal without the need for *** majority of ALA patients have an uncomplicated course,a number of complications have been described,including rupture into abdomino-thoracic structures,biliary fistula,vascular thrombosis,bilio-vascular compression,and secondary bacterial *** on clinico-radiological findings,a classification system for ALA has emerged recently,which can assist clinicians in making treatment *** research has revealed the role of venous thrombosis-related ischemia in the severity of *** years have seen the development and refinement of newer molecular diagnostic techniques that can greatly aid in overcoming the diagnostic challenge in endemic area where serology-based tests have limited *** has been the drug of choice for ALA patients for many ***,concerns over the resistance and adverse effects necessitate the creation of new,safe,and potent antiamebic *** the indication of the drainage of uncomplicated ALA has become more clear,high-quality randomised trials are still necessary for robust *** drainage appears to be a viable option for patients with ruptured ALA and diffuse peritonitis,for whom surgery represents a significant risk of *** regard to all of the aforementioned issues,this article intends to present an u

关键词： Amebic liver abscess Amebiasis Ruptured liver abscess Percutaneous drainage Metronidazole