检索结果-南通市图书馆

Removal of Dye Using Lignin-Based Biochar/Poly(ester amide urethane)Nanocomposites from Contaminated Wastewater

Journal of Renewable Materials 2024年第9期12卷 1507-1540页

作者： Annesha kar Niranjan karak Advanced Polymer and Nanomaterial Laboratory(APNL) Department of Chemical SciencesTezpur UniversityNapaamTezpur784028India Research and Development RymbalRTCSahibabad Industrial Area Site 4SahibabadGhaziabad201010India

The pursuit of incorporating eco-friendly reinforcing agents in polymer composites has accentuated the exploration of various natural biomass-derived *** burgeoning environmental crisis spurred by the discharge of synthetic dyes into wastewater has catalyzed the search for effective and sustainable treatment *** the various sorbent materials explored,biochar,being renewable,has gained prominence due to its excellent adsorption properties and environmental *** has also emerged as a focal point for its potential to replace other conventional reinforcing agents,viz.,fumed silica,aluminum oxide,treated clays,*** study introduces a novel class of polymer nanocomposites comprising of lignin-based biochar particles and poly(ester amide urethane)matrix via a feasible *** structural evaluation of these nanocomposites was accomplished using Fourier-transform infrared spectroscopy,X-ray photoelectron spectroscopy,and powder X-ray *** polymer nanocomposites exhibited superior mechanical properties with an increment in tensile strength factor by 45%in comparison to its pristine matrix,along with an excellent toughness value of 90.22 MJm^(−3)at a low loading amount of only 1 wt%.The composites showed excellent improvement in thermal properties with a sharp rise in the glass transition temperature(Tg)value from−28.15℃to 84℃,while also championing sustainability through inherent biodegradability *** their structural prowess,these polymer nanocomposites demonstrated excellent potential as adsorbents,displaying efficient removal of malachite green and tartrazine dyes from aqueous systems with a removal efficiency of 87.25%and 73.98%,*** kinetics study revealed the pseudo second order model to be the precision tool to assess the dye removal *** this,the Langmuir adsorption isotherm provided a framework to assess the sorption features of the polymer ***,these ren

关键词： Reinforcing agents biochar polymer nanocomposites poly(ester amide urethane) dye removal adsorption kinetics pseudo second order model langmuir isotherm

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Development and validation of multicentre study on novel Artificial Intelligence-based Cardiovascular Risk Score(AICVD)

引用

Family Medicine and Community Health 2024年第S1期12卷 20-33页

作者： Shiv kumar Jalepalli Prashant Gupta Andre L A J Dekker Inigo Bermejo Sujoy kar Apollo Hospitals HyderabadTelanganaIndia Azure Microsoft Research IndiaBengaluruIndia Department of Radiation Oncology(Maastro) Maastricht UniversityMaastrichtNetherlands

Objective Cardiovascular diseases(CVD)are one of the most prevalent diseases in India amounting for nearly 30%of total deaths.A dearth of research on CVD risk scores in Indian population,limited performance of conventional risk scores and inability to reproduce the initial accuracies in randomised clinical trials has led to this study on large-scale patient *** objective is to develop an Artificial Intelligence-based Risk Score(AICVD)to predict CVD event(eg,acute myocardial infarction/acute coronary syndrome)in the next 10 years and compare the model with the Framingham Heart Risk Score(FHRS)and *** Our study included 31599 participants aged 18–91 years from 2009 to 2018 in six Apollo Hospitals in India.A multistep risk factors selection process using Spearman correlation coefficient and propensity score matching yielded 21 risk factors.A deep learning hazards model was built on risk factors to predict event occurrence(classification)and time to event(hazards model)using multilayered neural ***,the model was validated with independent retrospective cohorts of participants from India and the Netherlands and compared with FHRS and *** The deep learning hazards model had a good performance(area under the curve(AUC)0.853).Validation and comparative results showed AUCs between 0.84 and 0.92 with better positive likelihood ratio(AICVD−6.16 to FHRS−2.24 and QRisk3−1.16)and accuracy(AICVD−80.15%to FHRS 59.71%and QRisk351.57%).In the Netherlands cohort,AICVD also outperformed the Framingham Heart Risk Model(AUC−0.737 vs 0.707).Conclusions This study concludes that the novel AI-based CVD Risk Score has a higher predictive performance for cardiac events than conventional risk scores in Indian population.

关键词： AICVD Cardiovascular acute

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Antioxidative effect of folate-modified chitosan nanoparticles

引用

Asian Pacific Journal of Tropical Biomedicine 2011年第1期1卷 29-38页

作者： Subhankari Prasad Chakraborty Santanu kar Mahapatra Sumanta kumar Sahu Panchanan Pramanik Somenath Roy Immunology and Microbiology Laboratory Department of Human Physiology with Community HealthVidyasagar University Nanomaterials Laboratory Department of ChemistryIndian Institute of Technology

Objective:To evaluate the potency of carboxymethyl chitosan-2,2' ethylenedioxy bisethylamine-folate(CMC-EDBE-FA) on tissue injury,antioxidant status and glutathione system in tissue mitochondria and serum against nicotine-induced oxidative stress in ***: CMC-EDBE-FA was prepared on basis of carboxymethyl chitosan tagged with folic acid by covalently linkage through 2,2' ethylenedioxy *** were divided into four groups,i.e.,control,nicotine(1 mg/kg bw/day),CMC-EDBE-FA(1 mg/kg bw/day) and nicotine(1 mg/kg bw/day) and CMC-EDBE-FA(1 mg/kg bw/day) for 7 *** of lipid peroxidation, oxidized glutathione level,antioxidant enzyme status and DNA damage were observed and ***:The significantly increase of lipid peroxidation,oxidized glutathione levels and DNA damage was observed in nicotine treated group as compared with control group;those were significantly reduced in CMC-EDBE-FA supplemented ***,significantly reduced antioxidant status in nicotine treated group was effectively ameliorated by the supplementation of *** CMC-EDBE-FA treated groups showed no significant change as compared with control group;rather than it repairs the tissue damage of nicotine treated ***:These findings suggest that CMC-EDBE-FA is non-toxic and ameliorates nicotine-induced toxicity.

关键词： Carboxymethyl chitosan Nicotine Glutathione Antioxidants Deoxyribonucleic acid fragmentation Antioxidative effect Folate Lipid peroxidation Oxidized

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Administration of Fenugreek Seed Extract Produces Better Effects in Glibenclamide-Induced Inhibition in Hepatic Lipid Peroxidation: An in vitro Study

引用

Chinese Journal of Integrative Medicine 2019年第4期25卷 278-284页

作者： Sharma Neha kar Anand Panda Sunanda School of Life Sciences Devi Ahilya UniversityTakshashila CampusIndore452017India

Objective: To evaluate the comparative effects of fenugreek(Trigonel a foenum graecum) seed extract(FSE) alone and in combination with an antidiabetic conventional medicine,glibenclamide(GLB),on the inhibition of in vitro lipid peroxidation(LPO) in liver,the major target organ of a ***: LPO was induced by ferrous sulphate(Fe So4),hydrogen peroxide(H2 O2) and carbon tetrachloride(CCl4) and the effects of test seed extract and/or GLB were ***: While Fe So4,H2 O2 and CCl4 markedly enhanced the hepatic LPO,simultaneous administration of FSE reduced it in a concentration dependent ***,when both FSE and GLB were added to the incubation mixture,chemical y induced hepatic LPO was further *** test extract also exhibited high antioxidative activity in 1,1-diphenyl-2-picrylhydrazyl radical and in 2,2'-azino-bis,3-ethylbenzothiazoline-6-sulphonic acid radical scavenging ***: FSE therapy in moderate concentration along with a hypoglycemic drug may prove to be advantageous in ameliorating diabetes mel itus and other diseases that are LPO mediated.

关键词： fenugreek glibenclamide antioxidant activity lipid peroxidation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Computation of Quantum Bound States on a Singly Punctured Two-Torus

引用

Chinese Physics Letters 2013年第1期30卷 17-20页

作者： CHAN kar-Tim Hishamuddin Zainuddin Saeid Molladavoudi Department of Physics Faculty of ScienceUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia Laboratory of Computational Sciences and Mathematical Physics Institute for Mathematical ResearchUniversiti Putra Malaysia43400 UPM SerdangSelangorMalaysia

We study a quantum mechanical system on a singly punctured two-torus with bound states described by the Maass waveforms which are eigenfunctions of the hyperbolic Laplace–Beltrami *** the discrete eigenvalues of the Maass cusp form are not known analytically,they are solved numerically using an adapted algorithm of Hejhal and Then to compute Maass cusp forms on the punctured *** report on the computational results of the lower lying eigenvalues for the punctured two-torus and find that they are *** also visualize the eigenstates of selected eigenvalues using GridMathematica.

关键词： torus states hyperbolic

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Suboptimal Robust Stabilization of Discrete-time Mismatched Nonlinear System

引用

IEEE/CAA Journal of Automatica Sinica 2018年第1期5卷 352-359页

作者： Niladri Sekhar Tripathy Indra Narayan kar Kolin Paul Department of Electrical Engineering Indian Institute of Technology Delhi New Delhi Delphi-110016 India IEEE

This paper proposes a discrete-time robust control technique for an uncertain nonlinear system. The uncertainty mainly affects the system dynamics due to mismatched parameter variation which is bounded by a predefined known function. In order to compensate the effect of uncertainty, a robust control input is derived by formulating an equivalent optimal control problem for a virtual nominal system with a modified costfunctional. To derive the stabilizing control law for a mismatched system, this paper introduces another control input named as virtual input. This virtual input is not applied directly to stabilize the uncertain system, rather it is used to define a sufficient condition. To solve the nonlinear optimal control problem, a discretetime general Hamilton-Jacobi-Bellman(DT-GHJB) equation is considered and it is approximated numerically through a neural network(NN) implementation. The approximated solution of DTGHJB is used to compute the suboptimal control input for the virtual system. The suboptimal inputs for the virtual system ensure the asymptotic stability of the closed-loop uncertain system. A numerical example is illustrated with simulation results to prove the efficacy of the proposed control algorithm.

关键词： Discrete-time general Hamilton-Jacobi-Bellman(DT-HJB) equation discrete-time optimal control discrete-time robust control mismatched uncertainty nonlinear optimal control

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Experimental and Numerical Investigation of the Effects of Passive Vortex Generators on Aludra UAV Performance

引用

Chinese Journal of Aeronautics 2011年第5期24卷 577-583页

作者： Tan kar ZHEN Muhammed ZUBAIR Kamarul Arifin AHMAD School of Aerospace Engineering Universiti Sains Malaysia

A study of the effects of passive vortex generators （VGs） on Aludra unmanned aerial vehicle （UAV） aerodynamic characteristics is presented. Both experimental and numerical works are carried out where an array of VGs is attached on Aludra UAV＇s wing. The flow measurements are made at various angles of attack by using 3-axis component balance system. In the numerical investigation, the Reynolds-averaged Navier-Stokes （RANS） code FLUENT 6.3TM is used in the simulations with fully structured mesh with Spalart-Allmaras （S-A） turbulence model and standard wall function. The comparison between the experimental and numerical results reveals a satisfactory agreement. The parametric study shows that higher maximum lift coefficient is achieved when the VGs are placed nearer to the separation point. In addition to this, shorter spanwise distance between the VGs also increases the maximum lift coefficient, rectangular and curve-edge VG performs better than triangular VG.

关键词： passive VG NACA4415 flow control computational fluid dynamics skin friction coefficient lift coefficient

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Role of Selective Interaction in Wealth Distribution

引用

Communications in Computational Physics 2006年第3期1卷 503-510页

作者： Abhijit kar Gupta Department of Physics Panskura Banamali CollegePanskura R.S.East MidnaporeWB Pin-721152India

In our simplified description‘wealth’is money(m).A kinetic theory of a gas like model of money is investigated where two agents interact(trade)selectively and exchange some amount of money between them so that sum of their money is unchanged and thus total money of all the agents remains *** probability distributions of individual money(P(m)vs.m)is seen to be influenced by certain ways of selective *** distributions shift away from Boltzmann-Gibbs like the exponential distribution,and in some cases distributions emerge with power law tails known as Pareto’s law(P(m)/m−(1+®)).The power law is also observed in some other closely related conserved and discrete models.A discussion is provided with numerical support to obtain insight into the emergence of power laws in such models.

关键词： Kinetic theory selective interaction disparity wealth distribution Pareto’s law

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Recent advances in understanding neurotoxicity,behavior and neurodegeneration in siluriformes

引用

Aquaculture and Fisheries 2024年第3期9卷 404-410页

作者： Sonika kar Balasubramanian Senthilkumaran Department of Animal Biology School of Life SciencesUniversity of HyderabadP.O.Central UniversityHyderabadTelangana500046India

Occurrence of neurotoxic chemicals in the aquatic environment is on the rise posing a potential threat to aquatic biota including *** teleosts,zebrafish has become a popular model organism for toxicological studies and testing ***,over the decade,siluriformes(catfish)are also finding ever increasing application being robust as well as their adaptability to adverse ecological conditions,surgical interventions,and tolerant models for toxicity studies and *** information can infer potential effects occurring to other species exposed to neurotoxins in their aquatic environment and predicting potential risks of a chemical for the aquatic *** aim of this review is to compare and interpret recent results published concerning neuro-behavioral and morphological disturbances caused by toxicants/pollutants providing a holistic view of potential neurotoxic outcomes in ***,this review summarizes various effects of toxicants/pollutants in terms of neurotoxicity and neurodegeneration associated with behavioral phenotypes.

关键词： Neurotoxicity Behavior Neurodegeneration Siluriformes Bioaccumulation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The construction of orthodox super rpp semigroups

引用

Science China Mathematics 2004年第4期47卷 552-565页

作者： He Yong Guo Yuqi kar Ping Shum School of Computer Science Hunan University of Science&TechnologyXiangtan 411201China Department of Mathematics Southwest Normal UniversityChongqing 400715China Department of Mathematics Soochow UniversitySuzhou 215000China Faculty of Science The Chinese University of Hong KongShatinN.T.Hong KongChina

We define orthodox super rpp semigroups and study their semilattice decompositions. Standard representation theorem of orthodox super rpp semigroups whose subband of idempotents is in the varieties of bands described ... 详细信息

关键词： orthodox super rpp semigroup, band-like extension, left cancellative plank, semilattice decomposition, standard representation.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：