检索结果-南通市图书馆

维普期刊数据库

A review of conventional and renewable biodiesel production

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2021年第12期34卷 1-17页

作者： P.Vignesh a.r.pradeep kumar N.Shankar Ganesh V.Jayaseelan K.Sudhakar Department of Mechanical Engineering Indira Institute of Engineering and TechnologyTiruvallurIndia Department of Mechanical Engineering Dhanalakshmi College of EngineeringChennaiIndia Department of Mechanical Engineering Kingston College of EngineeringVelloreIndia Department of Mechanical Engineering Prathyusha Engineering CollegeChennaiIndia Faculty of Mechanical and Automotive Engineering Technology Universiti Malaysia Pahang26600 PekanPahangMalaysia Automotive Engineering Centre Universiti Malaysia Pahang26600 PekanPahangMalaysia

The need for sustainable fuels has resulted in the production of renewables from a wide range of sources,in particular organic fats and *** use of biofuel is becoming more widespread as a result of environmental and economic *** efforts have been made to substitute fossil fuels with green *** molecules extracted from processed animal fats and organic plant materials are considered alternatives for the use in modern engine *** different methods have been adopted for converting esters in vegetable oils/animal fats into compounds consistent with petroleum products,namely the transesterification and the hydro-processing of ester bonds for the production of *** review paper primarily focuses on conventional and renewable biodiesel feedstocks,the catalyst used and reaction kinetics of the production process.

关键词： Biofuel Methy esters from fatly acids renewable diesel Kinetics Catalyst Transesterification

维普期刊数据库

Unlocking new potential of clinical diagnosis with artificial intelligence:Finding new patterns of clinical and lab data

在线全文

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第3期15卷 308-310页

作者： pradeep kumar Dabla Department of Biochemistry Govind Ballabh Pant Institute of Postgraduate Medical Education and ResearchDelhi 110002India

recent advancements in science and technology,coupled with the proliferation of data,have also urged laboratory medicine to integrate with the era of artificial intelligence(AI)and machine learning(ML).In the current practices of evidencebased medicine,the laboratory tests analysing disease patterns through the association rule mining(ArM)have emerged as a modern tool for the risk assessment and the disease stratification,with the potential to reduce cardiovascular disease(CVD)*** are the well recognised leading global cause of mortality with the higher fatality rates in the Indian population due to associated factors like hypertension,diabetes,and lifestyle ***-driven algorithms have offered deep insights in this field while addressing various challenges such as healthcare systems grappling with the physician *** medicine,well driven by the big data necessitates the integration of ML techniques and high-quality electronic health records to direct the meaningful *** technological advancements enhance the computational analyses for both research and clinical *** plays a pivotal role by uncovering meaningful relationships within databases,aiding in patient survival prediction and risk factor *** potential in laboratory medicine is vast and it must be cautiously integrated while considering potential ethical,legal,and privacy ***,an AI ethics framework is essential to guide its responsible *** AI algorithms with existing lab practices,promoting education among healthcare professionals,and fostering careful integration into clinical settings are imperative for harnessing the benefits of this transformative technology.

关键词： Laboratory medicine Artificial intelligence Machine learning Association rule mining Cardiovascular diseases

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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

Aerodynamics of a Tandem-Bladed Axial Compressor rotor under Circumferential Distortion at Different rotational Speeds

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Thermal Science 2024年第4期33卷 1340-1356页

作者： Amit kumar Jerry T.JOHN A.M.pradeep r.A.DAKKErMANS Dragan KOZULOVIC Department of Aerospace Engineering Indian Institute of Technology BombayMumbai400076India Department of Automotive and Aeronautical Engineering Hamburg University of Applied Sciences20099HamburgGermany Institute of Jet Propulsion Bundeswehr University Munich85577NeubibergGermany

For most aircraft engines,inflow distortion is *** distortion is known to degrade the aerodynamic performance and stable operating limits of a *** rotor configuration is an arrangement that effectively controls the growth of the boundary layer over the suction surface of the ***,a higher total pressure rise can be achieved through this unconventional design approach involving the splitting of the blade into forward and aft *** is expected that the effect of inlet flow distortion would be more severe for a tandem-rotor design due to the greater flow turning inherent in such ***,this aspect needs to be thoroughly *** present study discusses the effect of circumferential distortion on the tandem-rotor at different rotational ***-annulus rANS simulations using ANSYS CFX are used in the present *** performance of the rotor at a particular flow coefficient and different rotational speeds is *** total pressure and efficiency are observed to drop at lower mass flow rates under the influence of circumferential *** loss region in each blade passage is mainly associated with the blade wake,tip leakage vortex,secondary flow,and boundary ***,their contribution varies from passage to passage,particularly in the distorted *** the lower span,the wake width is found to be higher than that at a higher *** to the redistribution of the mass flow,the circumferential extent reduces at a higher *** the undistorted sector,the strength of the tip leakage vortex is significantly higher at the design rotational speed than at lower *** distortion near the tip region promotes an early vortex breakdown even at the design operating *** adversely affects the total pressure,efficiency,and stall *** clean flow conditions,this phenomenon is only observed near the stall *** the design operating condition,the breakdown of the forward rotor tip l

关键词： tandem rotor circumferential distortion loss tip leakage vortex vortex breakdown diffusion factor aerodynamics of compressor blade

维普期刊数据库

Identification of optimal composition with superior electrochemical properties along the zero Mn^(3+)line in Na_(0.75)(Mn-Al-Ni)O_(2)pseudo ternary system

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第9期96卷 206-216页

作者： Hari Narayanan Vasavan Manish Badole Samriddhi Saxena Velaga Srihari Asish kumar Das Pratiksha Gami Neha Dagar Sonia Deswal pradeep kumar Himanshu kumar Poswal Sunil kumar Department of Metallurgical Engineeringnd Materials Science Indian Institute of Technology IndoreSimrol 453552India High Pressure&Synchrotron radiation Physics Division Bhabha Atomic Research Centre400085 MumbaiIndia School of Physical Sciences Indian Institute of Technology MandiHimachal Pradesh 175005India Center for Electric Vehiclend Intelligent Transport Systems Indian Institute of Technology IndoreSimrol 453552India

Biphasic layered oxide cathodes,known for their superior electrochemical performance,are prime candidates for commercializing in Na-ion ***,we unveil a series of P3/P2 monophasic and biphasic Al-substituted Na_(3/4)Mn_(5-x/8)Al_(2x/8)Ni_(3-x/8)O_(2)layered oxide cathodes that lie along the‘zero Mn^(3+)line’in the Na_(3/4)(Mn-Al-Ni)O_(2)pseudo-ternary *** structural analysis showed a larger Na^(+)conduction bottleneck area in both P3 and P2 structures with a higher Al3+content,which enhanced their rate *** each composition,the P3/P2 biphasic compound with nearly equal fractions of P3 and P2 phases outperformed their monophasic counterparts in almost all electrochemical performance *** synchrotron XrD measurements obtained for the monophasic P3 and biphasic P2/P3 samples revealed the absence of the O3 phase during *** high structure stability and faster Na^(+)transport kinetics in the biphasic samples underpins the enhancement of electrochemical properties in the Al-substituted P3/P2 *** results highlight fixed oxidation state lines as a novel tool to identify and design layered oxide cathodes for Na-ion batteries in pseudo-ternary diagrams involving Jahn-Teller active cations.

关键词： Layered oxides Biphasic cathode Operando Synchrotron XrD Electrochemical behavior Cyclic performance

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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy Geoscience

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(re 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

Characteristics of patients with Wilson disease in the United States: An insurance claims database study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Hepatology 2024年第5期16卷 791-799页

作者： Thomas Daniel-robin pradeep kumar Bernard Benichou Jean-Philippe Combal Vivet Therapeutics Paris 75008France Clarivate Noida 201301Uttar PradeshIndia

BACKGrOUND Wilson disease(WD)is a progressive,potentially fatal degenerative disease affecting the liver and central nervous *** its low prevalence,collecting data on large cohorts of patients with WD is *** insur-ance claims databases provide powerful tools to collect retrospective data on large numbers of patients with rare *** To describe patients with WD in the United States,their treatment and clinical outcome,using a large insurance claims *** This retrospective,longitudinal study was performed in the Clarivate real-World Data Product *** patients with≥2 claims associated with an Interna-tional Classification of Diseases 10(ICD-10)diagnostic code for WD(E83.01)between 2016 and 2021 were included and followed until death or study *** were divided into two groups by whether or not they were documented to have received a specific treatment for *** manifestations,hospital-isations,liver transplantation and death were *** Overall,5376 patients with an ICD-10 diagnostic code for WD were *** mean age at inclusion was 41.2 years and 52.0%were men.A specific WD treatment was documented for 885 patients(15.1%),although the number of patients taking zinc salts may be underestimated due to over the counter *** inclusion,the mean age of patients with a documented treatment was 36.6±17.8 years vs 42.2±19.6 years in those without a documented *** follow-up,273 patients(5.1%)*** with the American general population,the standardised mortality ratio was *** proportion of patients with a documented WD-specific treatment who died during follow-up was 4.0%and the mean age at death 52.7 *** Patients treated for WD in the United States had an excess early mortality compared with the American *** findings indicate that there is a significant unmet need for effective treatment for WD in the United States.

关键词： Wilson disease Mortality Treatment Copper chelators Zinc acetate United States

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

钒技术在难减排行业和能源转型中的作用评估

钢铁钒钛 2024年第4期45卷 84-94页

作者： David ASantos Manish KDixit Pranav pradeep kumar Sarbajit Banerjee 德克萨斯农工大学化学系德克萨斯农工大学材料科学和工程系德克萨斯农工大学建筑科学系德克萨斯农工大学土木与环境工程学院

重工业的减碳和可再生能源技术的出现皆与获得矿物资源有着密不可分的联系。因此，迫切需要对关键元素在减少温室气体排放方面的作用进行基准评估。考察了钒作为微合金元素在建筑碳减排以及作为电网储能用液流电池的主要成分在能源转型... 详细信息

重工业的减碳和可再生能源技术的出现皆与获得矿物资源有着密不可分的联系。因此，迫切需要对关键元素在减少温室气体排放方面的作用进行基准评估。考察了钒作为微合金元素在建筑碳减排以及作为电网储能用液流电池的主要成分在能源转型中的作用。研究结果表明，钒可使每年减少总计1.85亿t碳排放。其中，中国和欧盟的减排幅度分别为各自排放量的1.15%和0.18%。研究结果强调了关键金属在发展低碳基础设施中的作用，同时指出了进行全面评估并施加政策干预减轻供应链风险的必要性。

关键词：钒微合金化液流电池碳减排

role of lymphocyte-to-monocyte ratio as a predictive marker for diabetic coronary artery disease: A cross-sectional study

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Methodology 2024年第3期14卷 48-54页

作者： pradeep kumar Dabla Dharmsheel Shrivastav Pratishtha Mehra Vimal Mehta Department of Biochemistry Govind Ballabh Pant Institute of Postgraduate Medical Education and ResearchDelhi 110002India Department of Biochemistry Govind Ballabh Pant Institute of Post Graduate and Medical ResearchDelhi 110002India Department of Cardiology Govind Ballabh Pant Institute of Postgraduate Medical Education and ResearchDelhi 110002India

BACKGrOUND The lymphocyte to monocyte ratio(LMr)is considered a marker of systemic inflammation in cardiovascular disease and acts as predictor of mortality in coronary artery *** To investigate the predictive role of LMr in diabetic coronary artery disease *** This cross-sectional study was conducted at tertiary care super-specialty hospital at New Delhi,India.A total of 200 angiography-proven coronary artery disease(CAD)patients were enrolled and grouped into two categories:Group I[CAD patients with type 2 diabetes mellitus(T2DM)and glycated hemoglobin(HbA1c)levels≥6.5%],and Group II(CAD patients without T2DM and HbA1c levelsrum lipoproteins,HbA1c,and complete blood count of enrolled patients were analyzed using fully automatic *** The logistic regression analysis showed an odds ratio of 1.48(95%CI:1.28-1.72,Pr diabetic coronary artery disease patients(Group I)in unadjusted *** adjusting for age,gender,diet,smoking,and hypertension history,the odds ratio increased to 1.49(95%CI:1.29-1.74,Pr high cholesterol and triglycerides yielded the same odds ratio of 1.49(95%CI:1.27-1.75,Preceiver operating characteristic curve analysis revealed 74%sensitivity,64%specificity,and 0.74 area under the curve(95%CI:0.67-0.80,Prate predictive accuracy for diabetic CAD *** LMr showed positive association with diabetic coronary artery disease,with moderate predictive *** findings have implications for improving CAD management in diabetics,necessitating further research and targeted interventions.

关键词： Coronary artery disease Type 2 diabetes mellitus HbA1c Lymphocyte to monocyte ratio Lymphocyte to monocyte ratio