检索结果-南通市图书馆

Modification of tamarind fruit shell powder with in situ generated copper nanoparticles by single step hydrothermal method

在线全文

学校读者我要写书评

暂无评论

Journal of bioresources and bioproducts 2020年第3期5卷 180-185页

作者： b.ashok N.Hariram Suchart Siengchin A.Varada Rajulu Department of Physics University College of EngineeringOsmania UniversityHyderabad-500007Telangana StateIndia Department of biotechnology Kalasalingam UniversityKrishnankoil-626126Tamil NaduIndia Department of Mechanical and Process Engineering the Sirindhorn International Thai-German Graduate School of Engineering(TGGS)King Mongkut’s University of Technology North BangkokBangkokThailand Center for Composite Materials International Research CenterKalasalingam UniversityKrishnankoil-626126Tamil NaduIndia

Tamarind fruit shell powder(TFSP)with particle size of<50μm(obtained from cleaned tamarind fruit shells)was modified with in situ generated copper nanoparticles(CuNPs)by simple one step hydrothermal *** modified TFSP... 详细信息

Tamarind fruit shell powder(TFSP)with particle size ofbtained from cleaned tamarind fruit shells)was modified with in situ generated copper nanoparticles(CuNPs)by simple one step hydrothermal *** modified TFSP was characterized by scanning electron microscope(SEM),Fourier transform infrared(FT-IR)spectroscopy,X-ray diffraction(XRD),thermogravi-metric analysis(TGA)and antibacterial *** generated stable CuNPs on the surface of the modified TFSP were spherical in shape with an average size of 88 *** FT-IR spectroscopy analysis indicated the involvement of the functional groups of the TFSP in the generation and stabilization of the *** XRD analysis indicated the presence of both CuNPs and Cu 2 O nanoparticles in the modified *** thermal analysis indicated the presence of 5.6 wt%of copper nanoparticles as calculated from the difference of residual char content between the un-modified and modified *** modified TFSP with in situ generated CuNPs exhibited obvious antibacterial activity against both the Gram negative and Gram positive bacteria and hence can be considered as low cost filler in the preparation of antibacterial polymer hybrid nanocomposites for packaging and medical applications.

关键词： Tamarind fruit shell powder Modification In situ generation Copper nanoparticle Antibacterial activity

Canonical NF-κb signaling regulates satellite stem cell homeostasis and function during regenerative myoge nesis

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 Molecular Cell biology 2019年第1期11卷 53-66页

作者： Alex R.Straughn Sajedah M.Hindi Guangyan Xiong ashok kumar Departments of Anatomical Sciences and Neurobiology University of Louisville School of MedicineLouisvilleKentucky 40202USA

Skeletal muscle regeneration in adults is attributed to the presence of satellite stem cells that proliferate,differentiate,and eventually fuse with injured ***,the signaling mechanisms that regulate satellite cell homeostasis and function remain less *** IKKp-mediated canonical NF-κb signaling has been implicated in the regulation of myogenesis and skeletal muscle mass,its role in the regulation of satellite cell function during muscle regeneration has not been fully ***,we report that canonical NF-κb signaling is induced in skeletal muscle upon *** cell-specific inducible ablation of IKKβattenuates skeletal muscle regeneration in adult *** ablation of IKKβalso reduces the number of satellite cells in injured skeletal muscle of adult mice,potentially through inhibiting their proliferation and *** also demonstrate that the inhibition of specific components of the canonical NF-κb pathway causes precocious differentiation of cultured satellite cells both ex vivo and in ***,our results highlight that the constitutive activation of canonical NF-κb signaling in satellite cells also attenuates skeletal muscle regeneration following injury in adult ***,our study demonstrates that the proper regulation of canonical NF-κb signaling is important for the regeneration of adult skeletal muscle.

关键词： myogenesis satellite cells NF-κb proliferation apoptosis inflammation

Nano-Enhanced Dairy Scum biodiesel blends:Unleashing the Power of Aluminium Oxide for Sustainable and Efficient Engine Performance

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 Thermal Science 2025年第1期 283-302页

作者： Veeranna MODI Prasad b.RAMPURE Sunil kumar SHETTY Madeva NAGARAL Channa Keshava NAIK N Johar MGM Muhammad Irsyad AbDULLAH Abdullah I.AL-MANSOUR Shamshad ALAM KLE College of Engineering and Technology ChikodiVisvesvaraya Technological University Nitte (Deemed to be University) NMAM Institute of Technology (NMAMIT)Department of Mechanical Engineering Aircraft Research and Design Centre HAL Department of Mechanical Engineering BGS College of Engineering and TechnologyBengaluruAffiliated to Visvesvaraya Technological University Management and Science University Department of Civil Engineering College of EngineeringKing Saud University

This study investigates the effect of aluminium oxide nanoparticlesaddition to biodiesel blends made from dairy milk scum on performance and combustion characteristics of the diesel *** dispersion of Al2O3nanoparticles in b20 blends at different concentrations was done with the help of *** number of blends were prepared for the *** Machine learning algorithms(Random Forest（RF）and Catboost) was used for the *** results show that in comparison to biodiesel blends without nanoparticles,the kinematic viscosity and density is higher for fuel blends with *** these Fuel blends have higher calorific *** blends exhibited reduced brake Specific Fuel Consumption（bSFC） of2.85% than the blends without nano particles(Dairy Scum Methyl Ester biodiesel 20%+Neat Diesel 80%（in volume）,DSMEb20),57.14% less CO,40.8% less hydrocarbon,and increased NOxemissions compared to conventional diesel,contributing to the development of environmentally friendly and renewable biofuel blends with *** b20NP30 is the optimal blend for performance and emission *** study concludes with findings on enhanced brake Thermal Efficiency（bTE） of 26.29% in 3×10-5（in volume） Al2O3nanoparticle-blended DSME b20 and other DSME b20 fuel blends,emphasizing the importance of optimal nanoparticle *** correlation matrix shows how engine load,efficiency measures（bTE,bSFC）,and emissions（CO,CO2,NOx,Smoke） are connected in complex *** results help us understand the complicated dynamics of engine performance and emission characteristics ***'s diagram for bTE and bSFC shows that Catboost-based bTE models perform superior to RF-based models during the training as well as testing *** results were obtained for CO and CO2emission results.

关键词：

Cerium vanadate/carbon nanotube hybrid composite nanostructures as a high-performance anode material for lithium-ion batteries

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 Energy Chemistry 2021年第7期30卷 25-32页

作者： D.Narsimulu ashok kumar Kakarla Jae Su Yu Department of Electronics and Information Convergence Engineering Institute for Wearable Convergence ElectronicsKyung Hee University1732 Deogyeong-daeroGiheung-guYongin-siGyeonggi-do 17104Republic of Korea

The pristine CeVO_(4) and CeVO_(4)/CNT hybrid composite nanostructured samples were facilely synthesized using a simple silicone oil-bath *** the X-ray diffraction results,the formation of tetragonal CeVO_(4) with an additional minor phase of V_(2)O_(5) was *** investigated as an anode material for lithium(Li)-ion batteries,the CeVO_(4)/CNT hybrid composite nanostructure(HCNS) electrode demonstrated improved Li storage performance over the pristine CeVO_(4).The Li insertion/de-insertion electrochemical reaction with the CeVO_(4) was analyzed on the basis of cyclic voltammetry *** cyclic voltammetry analysis revealed that the three-step reduction of V^(5+) to V^(3+), V^(3+) to V^(2+), and V^(2+) to V+ processes is involved and among them,only V^(5+) to V^(3+) is reversible during the Li-ion insertion into CeVO_(4).The CeVO_(4)/CNT HCNS electrode exhibited a discharge capacity as high as 443 mA h g^(-1)(capacity retention of 96.3%) over 200 cycles at 100 mA g^(-1), whereas the pristine CeVO_(4) is limited to 138 mA h g^(-1)(capacity retention of 48%).Even at a high current density of 500 mA g^(-1), the CeVO_(4)/CNT HCNS electrode delivered an excellent reversible capacity of 586.82 mA h g^(-1) after 1200 cycles.

关键词： Oil-bath synthesis CeVO_(4)/CNT hybrid composite nanostructure Anode Lithium-ion batteries

Prediction of oil-water flow patterns, radial distribution of volume fraction, pressure and velocity during separated flows in horizontal pipe

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2016年第4期28卷 658-668页

作者： Anand b.DESAMALA Vinayak VIJAYAN Anjali DASARI ashok kumar DASMAHAPATRA Tapas K.MANDAL Department of Chemical Engineering Indian Institute of Technology Guwahati

Flow of two immiscible fluids gives rise to variety of flow patterns,which influence transportation *** this work,we present detailed analysis on the prediction of flow pattern maps and radial distribution of volume fraction,pressure and velocity of a pair of immiscible liquids through a horizontal pipeline by computational fluid dynamics（CFD） simulation using ANSYS FLUENT *** viscous oil and water have been taken as the fluid pair for *** of fluid（VOF） method has been employed to predict various flow patterns by assuming unsteady flow,immiscible liquid pair,constant liquid properties,and co-axial *** the grid independent study,we have selected 47 037 number of quadrilateral mesh elements for the entire *** successfully predicts almost all the flow patterns（viz.,plug,slug,stratified wavy,stratified mixed and annular）,except dispersion of oil in water and dispersion of water in *** simulated results are validated with experimental results of oil volume fraction and flow pattern *** distribution of volume fraction,pressure and velocity profiles describe the nature of the stratified wavy,stratified mixed and annular flow *** profiles help to developing the phenomenological correlations of interfacial characteristics in two-phase flow.

关键词： stratified Prediction pipe annular unsteady radial validated turbulent turbulence separated

Differential RNA Editing of Mitochondrial Genes in WA-Cytoplasmic based Male Sterile Line Pusa 6A, and Its Maintainer and Restorer Lines

在线全文

学校读者我要写书评

暂无评论

Rice science 2019年第5期26卷 282-289页

作者： Umakanta NGANGKHAM Swarup kumar PARIDA ashok kumar SINGH Trilochan MOHAPATRA National Research Centre on Plant biotechnology New Delhi 110012India Indian Council of Agricultural Research-Research Complex for North East Hill Region Indian Council of Agricultural ResearchUmiam 793103India National Institute of Plant Genome Research New Delhi 110067India Division of Genetics Indian Agricultural Research InstituteNew Delhi 110012India Indian Council of Agricultural Research New Delhi 110001India

RNA editing changes the nucleotides at the transcript level of mitochondrial genes which results in synthesis of functional *** study was designed to find the editing sites which could be implicated in male fertility restoration and to develop editing based markers for differentiation of cytoplasmic male sterility and maintainer lines from each *** and RNA from young panicles were isolated from three-line system of hybrid rice PRH10,wild abortive(WA)cytoplasm based male sterile(A line Pusa 6A),maintainer(b line Pusa 6b)and restorer(R line PRR78)*** 6A and PRR78 having the same WA cytoplasm are allo-nuclear and iso-cytpolasmic *** genomic and cDNA amplicons for eight mitochondrial genes(18SrRNA,atp6,atp9,cobII,coxI,coxIII,nadI and rps3)were sequenced and *** in genomic and cDNA sequences were considered as *** hundred and thirty editing sites having base substitution or insertion/deletion were identified with the highest in 18SrRNA(5.74%)and the lowest in coxI(0.60%).The highest editing sites were observed in fertile maintainer Pusa 6b followed by PRR78 and Pusa 6A,of which random five editing sites in five different rice mitochondrial transcripts namely atp9,cobII,coxIII,rps3 and 18SrRNA were chosen and validated through cleaved amplified polymorphism sequence(CAPS)analysis and found to be partially edited in four *** identical editing sites of different mitochondrial genes from maintainer and restorer lines might reflect their possible contribution to fertility restoration of sterile WA cytoplasm.

关键词： cleaved amplified polymorphism sequence cytoplasmic male sterility hybrid rice RNAediting mitochondrial gene wild abortive nucleotide

Intrumer:A Multi Module Distributed Explainable IDS/IPS for Securing Cloud Environment

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2025年第1期82卷 579-607页

作者： Nazreen banu A S.K.b.Sangeetha Department of Computer Science and Engineering SRM Institute of Science and TechnologyVadapalani CampusChennai600026Tamil NaduIndia

The increasing use of cloud-based devices has reached the critical point of cybersecurity and unwanted network *** environments pose significant challenges in maintaining privacy and *** approaches,such as IDS,have been developed to tackle these ***,most conventional Intrusion Detection System(IDS)models struggle with unseen cyberattacks and complex high-dimensional *** fact,this paper introduces the idea of a novel distributed explainable and heterogeneous transformer-based intrusion detection system,named INTRUMER,which offers balanced accuracy,reliability,and security in cloud settings bymultiplemodulesworking together within *** traffic captured from cloud devices is first passed to the TC&TM module in which the Falcon Optimization Algorithm optimizes the feature selection process,and Naie bayes algorithm performs the classification of *** selected features are classified further and are forwarded to the Heterogeneous Attention Transformer(HAT)*** this module,the contextual interactions of the network traffic are taken into account to classify them as normal or malicious *** classified results are further analyzed by the Explainable Prevention Module(XPM)to ensure trustworthiness by providing interpretable *** the explanations fromthe classifier,emergency alarms are transmitted to nearby IDSmodules,servers,and underlying cloud devices for the enhancement of preventive *** experiments on benchmark IDS datasets CICIDS 2017,Honeypots,and NSL-KDD were conducted to demonstrate the efficiency of the INTRUMER model in detecting network trafficwith high accuracy for different *** outperforms state-of-the-art approaches,obtaining better performance metrics:98.7%accuracy,97.5%precision,96.3%recall,and 97.8%*** results validate the robustness and effectiveness of INTRUMER in securing diverse cloud environments against sophisticated cyber threats.

关键词： Cloud computing intrusion detection system transformers and explainable artificial intelligence(XAI)

Neuroinflammation revisited through the microglial lens

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第7期20卷 1989-1990页

作者： Renato Socodato João b.Relvas Institute of Research and Innovation in Health(i3S)and Institute for Molecular and Cell biology(IbMC) University of PortoPortoPortugal Department of biomedicine Faculty of Medicine of the University of Porto(FMUP)PortoPortugal

Neuroimmunology is emerging as a pivotal field,shedding light on the intricate dialogues between the central nervous system(CNS)and the immune *** exploration is particularly significant in understanding microglia,the CNS’s innate immune cells,beyond the conventional conflation of“neuroinflammation”and“microglial activation.”This conflation has clouded the true complexity of these processes,potentially stalling scientific progress and the development of new *** challenge the long-standing perspectives that have oversimplified these interactions,advocating for a deeper exploration of the dynamic relationship between neuroinflammation and microglial *** dissecting specific molecular pathways,we aim to illuminate their elaborate roles in neuroinflammatory responses,especially in the context of Alzheimer’s disease(AD).Here,neuroinflammation is not merely a passive observer or a direct antagonist but a complex agent in the disease’s *** article calls for a significant paradigm shift towards an integrative,multi-omics approach to *** such a comprehensive framework is crucial for advancing our understanding of neuroinflammatory conditions and paving the way for targeted therapeutic strategies for brain diseases.

关键词： inflammation simplified activation

Immunomodulating property of Ocimum sanctum by regulating the IL-2 production and its mRNA expression using rat's splenocytes

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2010年第1期3卷 8-12页

作者： Anjana Goel Dilip kumar Singh Sandeep kumar ashok kumar bhatia Department of Microbiology & Immunology College of Veterinary Sciences & Animal HusbandryU.P.Pt Deen Dayal Upadhyay Pasu Chikitsa Vigyan Vishwavidyalaya evam Go Anusandhan Sansthan(DUVASU)Mathura281001U.P.India

Objective:To investigate the regulatory effect of aqueous extract of leaves of Ocimum sanctum on IL-2 cytokine production in vivo and in vitro,and the effect of leaves extract on general blood picture including T& b ***:For in vivo studies albino Wistar rats were treated with aqueous crude leaves extract of Ocimum sanctum for 20 consecutive *** cells were harvested and assayed for IL-2 production by using sandwich enzyme-linked immunosorbent assay(ELISA) and mRNA expression *** in vitro study aqueous Ocimum sanctum leaves extract= in different concentrations(25-500μ/mL) was added into culture plates containing ConA stimulated *** study the overall effect on blood picture,density gradient purified lymphocytes analysis and conventional methodology for total and differential leukocyte count and hemoglobin level were also ***:It indicated that the rats treated with Ocimum sanctum leaves extract had significantly enhanced(Pbility of spleen cells to secrete *** in vitro also showed regulation of IL-2 *** study exhibited leucocytosis and augmentation of T& b lymphocytes by 25%approximately.4-5%increase in Hemoglobin value was also ***:Aqueous Ocimum sanctum leaves extract may have stimulatory effect on T & b lymphocytes particularly on Th 1 subset of lymphocytes as shown by enhancement in IL-2 production.

关键词： b lymphocytes IL-2 Ocimum sanctum Splenocytes T lymphocytes