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Impact of Particle Crush-Size and Weight on Rock-Eval S2,S4,and kinetics of Shales

Journal of Earth Science 2022年第2期33卷 513-524页

作者： Deependra Pratap singh David A.Wood Vivek singh Bodhisatwa Hazra pradeep k.singh CSIR-Central Institute of Mining and Fuel Research Barwa Road campusDhanbad 826015India Academy of Scientific and Innovative Research(AcSIR) Ghaziabad 201002India DWA Energy Limited Lincoln LN59JPUnited Kingdom

The Rock-Eval technique in the last few decades has found extensive application for source rock *** impact of shale particle crush-size and sample weight on key Rock-Eval measurements,*** S;curve(heavier hydrocarbons released during the non-isothermal pyrolysis-stage)and the S;curve(CO_(2)released from oxidation of organic matter during the oxidation-stage)are investigated in this *** high and low total organic carbon(TOC)samples of different thermal maturity levels,it is apparent that particle crush-size has a strong influence on the results obtained from RockEval analysis,with the effect being stronger in high-TOC *** comparison to the coarser-splits,S;and pyrolyzable carbon(PC)were found to be higher for the finer crush sizes in all the shales *** S_(2)CO_(2)oxidation curve shapes of Permian shales show contrasting signatures in comparison to the Paleocene-aged lignitic shale,both from Indian basins.A reduced TOC was observed with rising sample weight for a mature Permian shale from the Jharia basin,while the other shales sampled showed no significant *** results indicate that the S_(2)CO_(2)curve and the S_(2)T_(2),are strongly dependent on the type of organic-matter present and its level of thermal *** weight and particle size both influence the S;-curve shapes at different heating *** increasing sample weights,an increase in S;-curve magnitude was observed for the shales of diverse *** differences in the S;curve shape lead to substantially different kinetic distributions being fitted to these *** findings are considered to have significant implications for the accuracy of reaction kinetics obtained from pyrolysis experiments using different sample characteristics.

关键词： high-TOC shale analysis Rock-Eval pyrolysis total organic carbon sample specifications thermal maturity shale reaction kinetics petroleum geology

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Osteoarticular sequlae of small pox:a case report

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Asian Pacific Journal of Tropical Medicine 2010年第12期3卷 1001-1003页

作者： pradeep k singh Department of Orthopaedics and Trauma DMIMS WardhaIndia

Small pox has been eradicated completely but its unique pathology and sequlae still come across in routine clinical *** changes following small pox infection has been elaborated in *** present a similar but rare patient with osteomyelitis variolosa and joint deformity involving elbow,wrist joints and humerus *** condyles were typically elongated as central portion of distal humerus *** united uneventfully following stabilization with dynamic compression plate and bone *** showed satisfactory elbow function at the end of last follow-up.

关键词： Osteomyelitis variolosa Small pox Variola virus Deformity

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kinetic Energy Recovery from the Chimney Flue Gases Using Ducted Turbine System

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Chinese Journal of Mechanical Engineering 2017年第2期30卷 472-482页

作者： Harjeet S.Mann pradeep k.singh Department of Mechanical Engineering Sant LongowalInstitute of Engineering and TechnologyLongowalPunjab 148106India

An innovative idea of extracting kinetic energy from man-made wind resources using ducted turbine system for on-site power generation is introduced in this paper. A horizontal axis ducted turbine is attached to the top of the chimney to harness the kinetic energy of flue gases for producing electricity. The turbine system is positioned beyond the chimney outlet, to avoid any negative impact on the chimney performance. The convergentdivergent duct causes increase in the flue gas velocity and hence enhances the performance of the turbine. It also acts as a safety cover to the energy recovery system. The results from the CFD based simulation analysis indicate that sig- nificant power 34 kW can be harnessed from the chimney exhaust. The effect of airfoils NACA4412 and NACA4416 and the diffuser angle on the power extraction by the energy recovery system using a 6-bladed ducted turbine has been studied with the CFD simulation. It is observed that the average flue gas velocity in the duct section at the throat is approximately twice that of the inlet velocity, whereas maximum velocity achieved is 2.6 times the inlet velocity. The simulated results show that about power may be extracted from the chimney flue gases of 660 MW power plant. The system can be retrofitted to existing chimneys of thermal power plants, refineries and other industries.

关键词： Chimney flue gases Energy recovery system ·kinetic energy Ducted turbine CFD

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A comprehensive review on pharmacognosy, phytochemistry and pharmacological activities of 8 potent Prunus species of southeast Asia

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Journal of Traditional Chinese Medicine 2024年第3期44卷 620-628页

作者： Shikha Agrawal Adarsh kumar Ankit kumar singh Harshwardhan singh Suresh Thareja pradeep kumar Department of Pharmaceutical Sciences and Natural Products Central University of Punjab

Genus Prunus comprising around 430 species is a vast important genus of family Rosaceae, subfamily amygdalaoidae. Among all 430 species, around 19 important species are commonly found in Indian subcontinent due to their broad nutritional and economic importance. Some most common species of genus Prunus are Prunus amygdalus, Prunus persica, Prunus armeniaca, Prunus avium, Prunus cerasus, Prunus cerasoides, Prunus domestica, Prunus mahaleb, etc. A newly introduced species of Prunus i.e Prunus sunhangii is recently discovered which is morphologically very similar to Prunus cerasoides. Plants of Prunus species are short to medium-sized deciduous trees mainly found in the northern hemisphere. In India and its subcontinent,it extends from the Himalayas to Sikkim, Meghalaya,Bhutan, Myanmar etc. Different Prunus species have been extensively studied for their morphological,microscopic, pharmacological and phytoconstituents characteristics. Total phenolic content of Prunus species explains the presence of phenols in high quantity and pharmacological activity due to phenols. Phytochemical screening of species of genus Prunus shows the presence of wide phytoconstituents which contributes in their pharmacological significance and reveals the therapeutic potential and traditional medicinal significance of this genus. Genus Prunus showed a potent antioxidant activity analyzed by 1,1-diphenyl-2-picryl-hydrazyl radical assay. Plant species belonging to the genus Prunus is widely used traditionally for the treatment of various disorders. Some specific Prunus species possess potent anticancer, anti-inflammatory,hypoglycemic etc. activity which makes the genus more interesting for further research and findings. This review is an attempt to summarize the comprehensive study of Prunus species from its distribution, morphological characters to phytoconstituents, and pharmacological activity.

关键词： Prunus Rosaceae antineoplastic agents distribution hypoglycemic agents phytochemistry review

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Gas hydrate saturation from NGHP 02 LWD data in the Mahanadi Basin

Energy Geoscience

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Energy Geoscience 2024年第2期5卷 279-289页

作者： Uma Shankar pradeep kumar Yadav Sneha Devi Udham singh Yadav Department of Geophysics Institute of ScienceBHUVaranasi221005India Oil and Natural Gas Corporation Ltd. Gas Hydrate Research&Technology Centre(GHRTC)Panvel410221Navi MumbaiIndia

During the Indian National Gas Hydrate Program(NGHP)Expedition 02,Logging-while-drilling(LWD)logs were acquired at three sites(NGHP-02-11,NGHP-02-12,and NGHP-02-13)across the Mahanadi Basin in area *** applied rock physics theory to available sonic velocity logs to know the distribution of gas hydrate at site NGHP-02-11 and *** physics modeling using sonic velocity at well location shows that gas hydrate is distributed mainly within the depth intervals of 150-265 m and 100 -215 mbsf at site NGHP-02-11 and NGHP-02-13,respectively,with an average saturation of about 4%of the pore space and the maximum concentration of about 40%of the pore space at 250 m depth at site NGHP-02-11,and at site NGHP-02-13 an average saturation of about 2%of the pore space and the maximum concentration of about 20%of the pore space at 246 m depth,as gas hydrate is distributed mainly within 100-246 mbsf at this *** of gas hydrate estimated from the electrical resistivity method using density derived porosity and electrical resistivity logs from Archie's empirical formula shows high saturation compared to that from the sonic ***,estimates of hydrate saturation based on sonic P-wave velocity may differ significantly from that based on resistivity,because gas and hydrate have higher resistivity than conductive pore fluid and sonic P-wave velocity shows strong effect on gas hydrate as a small amount of gas reduces the velocity significantly while increasing velocity due to the presence of *** site NGHP-02-11,gas hydrate saturation is in the range of 15%e30%,in two zones between 150-180 and 245-265 *** NGHP-02-012 shows a gas hydrate saturation of 20%e30%in the zone between 100 and 207 *** NGHP-02-13 shows a gas hydrate saturation up to 30%in the zone between 215 and 246 *** observations from rock physics modeling and Archie’s approximation show the gas hydrate concentrations are relatively low(<4%of the pore space)at the sites of the

关键词： Mahanadi Basin Gas hydrate Sonic log Effective medium modeling Electrical resistivity log Archie’s analysis Gas hydrate saturation

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Discovering hidden patterns:Association rules for cardiovascular diseases in type 2 diabetes mellitus

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World Journal of Methodology 2024年第2期14卷 97-106页

作者： pradeep kumar Dabla kamal Upreti Dharmsheel Shrivastav Vimal Mehta Divakar singh Department of Biochemistry Govind Ballabh Pant Institute of Postgraduate Medical Education and ResearchDelhi 110002India Department of Computer Science CHRISTGhaziabad 201003India Department of Cardiology Govind Ballabh Pant Institute of Postgraduate Medical Education and ResearchDelhi 110002India Barkatullah University Institute of Technology Barkatullah UniversityBhopal 462026India

BACkGROUND It is increasingly common to find patients affected by a combination of type 2 diabetes mellitus(T2DM)and coronary artery disease(CAD),and studies are able to correlate their relationships with available biological and clinical *** aim of the current study was to apply association rule mining(ARM)to discover whether there are consistent patterns of clinical features relevant to these *** leverages clinical and laboratory data to the meaningful patterns for diabetic CAD by harnessing the power help of data-driven algorithms to optimise the decision-making in patient *** To reinforce the evidence of the T2DM-CAD interplay and demonstrate the ability of ARM to provide new insights into multivariate pattern *** This cross-sectional study was conducted at the Department of Biochemistry in a specialized tertiary care centre in Delhi,involving a total of 300 consented subjects categorized into three groups:CAD with diabetes,CAD without diabetes,and healthy controls,with 100 subjects in each *** participants were enrolled from the Cardiology IPD&OPD for the sample *** study employed ARM technique to extract the meaningful patterns and relationships from the clinical data with its original *** The clinical dataset comprised 35 attributes from enrolled *** analysis produced rules with a maximum branching factor of 4 and a rule length of 5,necessitating a 1%probability increase for *** patterns emerged,highlighting strong links between health indicators and diabetes likelihood,particularly elevated HbA1C and random blood sugar *** ARM technique identified individuals with a random blood sugar level>175 and HbA1C>6.6 are likely in the“CAD-with-diabetes”group,offering valuable insights into health indicators and influencing factors on disease *** The application of this method holds promise for healthcare practitioners to offer valuable insights for enhanc

关键词： Coronary artery disease Type 2 diabetes mellitus Coronary angiography Association rule mining Artificial intelligence

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Comment on: Observation of peripheral refraction in myopic anisometropia in young adults

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International Journal of Ophthalmology(English edition) 2024年第7期17卷 1385-1386页

作者： Suraj kumar Chaurasiya Mahendra singh pradeep Agarwal Yu-Qin Du Yue-Hua Zhou Ming-Wei Ding Ming-Xu Zhang Yu-Juan Guo Shan-Shan Ge Department of Optometry and Vision Science CL Gupta Eye InstituteRam Ganga Vihar Phase II(Extn.)MoradabadUttar Pradesh 244001India Department of Paediatric and Neuro Ophthalmology CL Gupta Eye InstituteRam Ganga Vihar Phase II(Extn.)MoradabadUttar Pradesh 244001India Eye School of Chengdu University of TCM Ineye Hospital of Chengdu University of TCMChengdu 610036Sichuan ProvinceChina Beijing Ming Vision and Ophthalmology Beijing 100010China

Dear Editor,We read with great interest the recently published article titled“Observation of peripheral refraction in myopic anisometropia in young adults”by Du et al[1].The study conducted at the InEye Hospital of Chengdu University of TCM provides valuable insights into the relationship between anisometropia and peripheral refraction in myopic young *** commend the authors for their thorough investigation and adherence to ethical *** the study contributes significantly to our understanding of myopic anisometropia,we would like to draw attention to some limitations that merit consideration for a comprehensive interpretation of the findings.

关键词： Observation young insight

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Surgical site infection and clinical microbiology in orthopaedics surgeries in a rural hospital

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海南医学院学报 2011年第2期17卷 182-184,189页

作者： pradeep k.singh Sandeep Shrivastva Rajesh Dulani Abhishek Yadav Department of Orthopaedics and Trauma Jawahar Lal Nehru Medical College & Acharya Vinoba Bhave Rural Hospital DMIMS

Infection and Clinical Microbiology in Orthopae-dics Surgeries in Wound infections resulting from contaminationduring major orthopaedics surgery continues to bea vital *** this study,speci mens of pus,draining fluids or suspected pus fromthe woundsof surgical patients who had been undergone majororthopaedics surgical procedure were *** of present study was to analyze

关键词：整形外科手术感染临床抗菌剂

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Analysis of community question-answering issues via machine learning and deep learning:State-of-the-art review

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CAAI Transactions on Intelligence Technology 2023年第1期8卷 95-117页

作者： pradeep kumar Roy Sunil Saumya Jyoti Prakash singh Snehasish Banerjee Adnan Gutub Department of Computer Science and Engineering Indian Institute of Information TechnologySuratIndia Indian Institute of Information Technology DharwadIndia Department of Computer Science and Engineering National Institute of TechnologyPatnaIndia The York Management School University of YorkYorkUK Computer Engineering Department College of Computer&Information SystemsUmm Al-Qura UniversityMakkahSaudi Arabia

Over the last couple of decades,community question-answering sites(CQAs)have been a topic of much academic *** have often leveraged traditional machine learning(ML)and deep learning(DL)to explore the ever-growing volume of content that CQAs *** clarify the current state of the CQA literature that has used ML and DL,this paper reports a systematic literature *** goal is to summarise and synthesise the major themes of CQA research related to(i)questions,(ii)answers and(iii)*** final review included 133 *** research themes include question quality,answer quality,and expert *** terms of dataset,some of the most widely studied platforms include Yahoo!Answers,Stack Exchange and Stack *** scope of most articles was confined to just one platform with few cross-platform *** with ML outnumber those with ***,the use of DL in CQA research is on an upward trajectory.A number of research directions are proposed.

关键词： answer quality community question answering deep learning expert user machine learning question quality

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Generating A New Shilling Attack for Recommendation Systems

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Computers, Materials & Continua 2022年第5期71卷 2827-2846页

作者： pradeep kumar singh Pijush kanti Dutta Pramanik Madhumita Sardar Anand Nayyar Mehedi Masud Prasenjit Choudhury Department of Computer Science&Engineering National Institute of TechnologyDurgapurIndia Graduate School Duy Tan UniversityDa NangVietnam Faculty of Information Technology Duy Tan UniversityDa NangVietnam Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia

A collaborative filtering-based recommendation system has been an integral part of e-commerce and *** keep the recommendation systems reliable,authentic,and superior,the security of these systems is very *** the existing shilling attack detection methods in collaborative filtering are able to detect the standard attacks,in this paper,we prove that they fail to detect a new or unknown *** develop a new attack model,named Obscure attack,with unknown features and observed that it has been successful in biasing the overall top-N list of the target users as *** Obscure attack is able to push target items to the top-N list as well as remove the actual rated items from the *** proposed attack is more effective at a smaller number of k in top-k similar user as compared to other existing *** effectivity of the proposed attack model is tested on the MovieLens dataset,where various classifiers like SVM,J48,random forest,and naïve Bayes are utilized.

关键词： Shilling attack recommendation system collaborative filtering top-N recommendation biasing shuffling hit ratio

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