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R-IDPS: Real Time SDN-Based IDPS System for IoT Security

Computers, Materials & Continua 2022年第11期73卷 3099-3118页

作者： Noman Mazhar Rosli Saleh Reza Zaba Muhammad zeeshan M.Muzaffar Hameed Nauman Khan Faculty of Computer Science and Information Technology University of MalayaKuala Lumpur50603Malaysia Centre for Research in Industry 4.0 University of MalayaKuala Lumpur50603Malaysia MIMOS Berhad National Applied R&D CentreKuala Lumpur57000Malaysia School of Electrical Engineering and Computer Science National University of Sciences and TechnologyIslamabad44000Pakistan

The advent of the latest technologies like the Internet of things(IoT)transforms the world from a manual to an automated way of ***,IoT sector open numerous security *** traditional networks,intrusion detection and prevention systems(IDPS)have been the key player in the market to ensure *** challenges to the conventional IDPS are implementation cost,computing power,processing delay,and ***,online machine learning model training has been an *** these challenges still question the IoT network *** has been a lot of research for IoT based detection systems to secure the IoT devices such as centralized and distributed architecture-based detection *** centralized system has issues like a single point of failure and load balancing while distributed system design has scalability and heterogeneity *** this study,we design and develop an agent-based hybrid prevention system based on software-defined networking(SDN)*** system uses lite weight agents with the ability to scaleup for bigger networks and is feasible for heterogeneous IoT *** baseline profile for the IoT devices has been developed by analyzing network flows from all the IoT *** profile helps in extracting IoT device *** features help in the development of our dataset that we use for anomaly *** anomaly detection,support vector machine has been used to detect internet control message protocol(ICMP)flood and transmission control protocol synchronize(TCP SYN)flood *** proposed system based on machine learning model is fully capable of online and offline *** than detection accuracy,the system can fully mitigate the attacks using the software-defined technology SDN *** major goal of the research is to analyze the accuracy of the hybrid agent-based intrusion detection systems as compared to conventional centralized only solutions,especially under the flood attac

关键词： Machine learning Internet of things software defined networking distributed denial of service attacks

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Efficiency of KOH-modified rice straw-derived biochar for reducing cadmium mobility, bioaccessibility and bioavailability risk index in red soil

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Pedosphere 2020年第6期30卷 874-898页

作者： Saqib bashir Qaiser HUSSAIN Jun ZHU Qingling FU David HOUBEN Hongqing HU Key Laboratory of Arable Land Conservation Middle and Lower Reaches of Yangtse RiverMinistry of AgricultureCollege of Resources and EnvironmentHuazhong Agricultural UniversityWuhan 430070China Department of Soil and Environmental Science Ghazi UniversityDera Ghazi Khan 32200Pakistan Department of Soil Science&SWC PMAS-Arid Agriculture UniversityRawalpindi 46300Pakistan AGHYLE UniLaSalleBeauvais 60011France

Cadmium(Cd)pollution in agricultural soils has exerted a serious threat due to continuous application of pesticides,fertilizers,and wastewater *** present study aimed to test the efficiency of KOH-modified and non-modified rice straw-derived biochar(KBC and BC,respectively)for reducing Cd solubility and bioavailability in Cd-contaminated ***-contaminated soil was incubated for 60 d with 15 and 30 g kg-1 BC and *** the end of incubation,Cd mobility was estimated by the European Community Bureau of Reference sequential extraction and toxicity characteristic leaching procedure(TCLP),while bioavailability was determined using 1 molL-1 NH4NO3 *** bioavailability risk index and bioaccessibility,assessed by a simple bioaccessibility extraction test,of Cd were used to examine the potential effects of Cd on living *** results indicated that application of both KBC and BC significantly increased soil p H,cation exchange capacity,nutrients,and organic *** soluble fraction of Cd was significantly decreased by 30.3%and 27.4%,respectively,with the addition of KBC and BC at 30 g kg-1 compared to the control(without biochar addition).Similarly,the bioaccessible Cd was significantly decreased by 32.4%and 25.2%,respectively,with the addition of KBC and BC at 30 g kg-1 compared to the *** addition,both KBC and BC significantly reduced Cd leaching in the TCLP and NH4NO3-extractable Cd in the amended soil compared to the *** reduction in Cd solubility and bioaccessibility by KBC and BC may be due to significant increases in soil pH and surface ***,KBC at an application rate of 30 g kg-1 demonstrated positive results as soil amendment for Cd immobilization,and reduced bioaccessible Cd in contaminated soil.

关键词： bioaccessible Cd Cd fractionation Cd immobilization NH4NO3-extractable Cd sequential extraction soilpH

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Communications in Theoretical Physics 2021年第6期73卷 158-166页

作者： Ammarah Raees Umer Farooq Muzamil Hussain Waseem Asghar Khan Fozia bashir Farooq Faculty of Computer Science and Software Engineering Huaiyin Institute of TechnologyHuai'anChina Department of Mathematics COMSATS University IslamabadPark Road Chak Shahzad Islamabad 44000Pakistan Department of Mathematics College of Sciences AIZulfiMajmaah UniversityA1 Majma'ah11952 Saudi Arabia Department of Mathematics Imam Muhammad ibn Saud Islamic UniversityRiyadh 11432Saudi Arabia Department of Mathematics University of the Poonch RawalakotRawalakot 12350Pakistan

The aspiration of this research is to explore the impact of non-similar modeling for mixed convection in magnetized second-grade nanofluid *** flow is initiated by the stretching of a sheet at an exponential rate in the upward vertical *** buoyancy effects in terms of temperature and concentration differences are inserted in the x-momentum *** aspects of heat and mass transfer are studied using dimensionless thermophoresis,Schmidt and Brownian motion *** governing coupled partial differential system(PDEs)is remodeled into coupled non-similar nonlinear PDEs by introducing non-similar *** numerical analysis for the dimensionless non-similar partial differential system is performed using a local non-similarity method via ***,the quantitative effects of emerging dimensionless quantities on the nondimensional velocity,temperature and mass concentration in the boundary layer are conferred graphically,and inferences are drawn that important quantities of interest are substantially affected by these *** is concluded that non-similar modeling,in contrast to similar models,is more general and more accurate in convection studies in the presence of buoyancy effects for second-grade non-Newtonian fluids.

关键词： non-similar modeling second-grade fluid exponentially stretching surface local non-similarity bvp4c

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Synthesis and Characterization of Polyesters Based on Diethylketone Moiety

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Chinese Journal of Polymer Science 2014年第11期32卷 1450-1459页

作者： Ismail A.Alkskas bashir A.El-gnidi Khadija M.Ghalieo Faizul Azam Polymer Lab Department of ChemistryFaculty of ScienceMisurata University Faculty of Pharmacy Misurata University

A new class of unsaturated polyesters based on diethylketone have been prepared by interfacial polymerization of 2,4-bis（4-hydroxybenzylidene）-3-pentanone（I） and 2,4-bis（4-hydroxy-3-methoxybenzylidene）-3-pentanone（II） with 4,4’-azodibenzoyl chloride and 3,3’-azodibenzoyl chloride at ambient temperature. The model compounds were synthesized by reaction of（I） and（II） with benzoyl chloride. The new monomers, model compounds and polyesters have been characterized by different spectral analyses. The polyesters have inherent viscosity of 0.55-0.80 d L/g and moderate number average molecular weight（Mn） in the range of 6150-7400 g/mol. Most of the compounds exhibited their solubility in aprotic solvents while partial solubility in various halogenated organic solvents was observed. The temperatures of 10% weight loss were high（225-330 °C） in nitrogen, indicating that these polyesters have excellent thermal stability. Doping with iodine dramatically raised the conductivity and produced brown colored semiconductive polymers with a maximum conductivity of 2.7 × 10-6 --1cm-1. Moreover, the morphological properties of selected example of polyesters were detected by SEM.

关键词： Diethylketone Azo Polyesters Conductivity.

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New insights into porosity determination using artificial intelligence techniques for carbonate reservoirs

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Petroleum 2018年第4期4卷 408-418页

作者： Salaheldin Elkatatny zeeshan Tariq Mohamed Mahmoud Abdulazeez Abdulraheem Department of Petroleum Engineering King Fahd University of Petroleum&MineralsDhahran 31261Saudi Arabia Petroleum Engineering Department Cairo UniversityCairo Egypt Petroleum Engineering Department Suez UniversitySuezEgypt

The porosity of the petroleum reservoirs is considered one of the most important parameters in reserve estimation because it determines the effective volume of the hydrocarbon that is stored in the *** on the reserve estimation,the development plan can be set and *** can be determined in the laboratory which is the most expensive *** also can be determined from the logs such as density,neutron,sonic,and NMR *** are a lot of uncertainties in the porosity estimation from wireline logs because it depends on many statistical analysis and also is affected by the logging environment and logging *** prediction of the porosity from different porosity logs using artificial intelligence(AI)methods validated with the laboratory measured values is the best method to determine an accurate value of the rock *** objective of this research is to evaluate AI tools such as artificial neural network(ANN),Support vector machine(SVM)and Adaptive neuro fuzzy inference system(ANFIS)to predict the reservoir porosity based on wireline log *** than 1700 field measurements of porosity with logs data were used for training and testing the AI *** results obtained showed that ANN and ANFIS can be used to estimate the reservoir porosity based on log data with a high correlation coefficient(R)and low average absolute percentage error(AAPE).The main inputs required for porosity estimation are bulk density,neutron porosity,and sonic compressional *** developed mathematical equation based on the weights and bias of the ANN model can be used to predict the reservoir porosity based on log data with a correlation coefficient of 0.98 and an AAPE less than 8%.The advantage of this work is that we extracted the mathematical model from the ANN that can be used directly to determine the porosity without the need for training and testing the *** porosity estimation from the neutron-density crossplots,which is the current te

关键词： Porosity Artificial intelligence Neural network Carbonate reservoir Logging

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Experimental investigation of the mixing efficiency via intensity of segregation along axial direction of a rotating bar reactor

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中国化学工程学报:英文版 2023年第7期59卷 153-159页

作者： Abdelgadir bashir Banaga Yan-Bin Li Zhi-Hao Li Bao-Chang Sun Guang-Wen Chu State Key Laboratory of Organic-Inorganic Composite Beijing University of Chemical TechnologyBeijing 100029China Research Center of the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China Department of Chemical Engineering Tiangong UniversityTianjin 300387China

As a significant index to evaluate the mixing efficiency,studying the concentration distribution is directly related to the intensity of segregation(I_(s)).In this work,the I_(s) of the mixture composed of NaCl solutionwater was investigated experimentally in a rotating bar reactor(RBR)by the conductivity *** results showed that the mixing efficiency was improved along the axial direction from the bottom to the top in the *** concentration distribution at the bottom section was more uneven,and I_(s) was higher compared with the top section,which decreased from 6.53×10^(-5)to 1.57×10^(-7).With the increase of rotational speed from 0 to 700 r·min^(-1),I_s at the bottom and top sections decreased from 4.27×10^(-3)to 7.10×10^(-5)and from 1.93×10^(-3)to 7.29×10^(-7),*** increases flow rate of solution A,and the decreases of concentration of NaCl and flow rate of solution B gave rise to the reduction of I_(s),signifying an improved mixing *** results revealed that the conductivity method used in this paper has high efficiency and low cost to measure the I_(s),which indicates a promising prospect for estimating reactors'mixing performance.

关键词： Intensity of segregation Mixing efficiency Rotating bar reactor Conductivity method Concentration distribution

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丙烷脱氢反应中焙烧温度和反应气氛对Pt-Sn/SAPO-34催化性能的影响(英文)

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催化学报 2010年第5期31卷 552-556页

作者： zeeshan NAWAZ 汤效平褚玥魏飞清华大学化学工程系绿色反应工程与工艺北京市重点实验室(FLOTU) 北京100084

在不同的焙烧温度下制备了Pt-Sn/SAPO-34催化剂,并使用X射线衍射、N2吸附、X射线荧光光谱、O2脉冲烧炭、H2程序升温还原和透射电镜等手段对催化剂进行了表征.在微型反应器中评价了Pt-Sn/SAPO-34催化剂对丙烷脱氢制丙烯反应的催化性能,... 详细信息

在不同的焙烧温度下制备了Pt-Sn/SAPO-34催化剂,并使用X射线衍射、N2吸附、X射线荧光光谱、O2脉冲烧炭、H2程序升温还原和透射电镜等手段对催化剂进行了表征.在微型反应器中评价了Pt-Sn/SAPO-34催化剂对丙烷脱氢制丙烯反应的催化性能,考察了焙烧温度和反应气氛对催化剂性能的影响.结果表明,焙烧温度为500oC时,催化剂具有最佳的反应活性.当焙烧温度高于500oC时,催化剂出现不希望的表面变化,例如活性Pt位点的聚集、Pt的团聚、Sn的流失等.当反应温度为595oC时,Pt-Sn/SAPO-34催化性能稳定,且能够保持表面金属状态.

关键词：铂锡 SAPO-34 焙烧温度丙烷脱氢丙烯团聚

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不同结构SAPO-34催化剂上1-己烯催化裂解制丙烯(英文)

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催化学报 2009年第10期30卷 1049-1057页

作者： zeeshan NAWAZ 汤效平朱杰魏飞 Shahid NAVEED 清华大学化工系北京市绿色反应工程与工艺实验室北京100084 拉合尔大学化学工程系巴基斯坦拉合尔54890

制备了100%SAPO-34,30%SAPO-34和介孔-SAPO-34三种不同类型的SAPO-34分子筛催化剂,并采用氮吸附、扫描电镜、X射线衍射和红外光谱等方法对催化剂进行了表征.三种催化剂的微孔结构、比表面积和总酸量近似,但具有不同的催化剂组成和次级结... 详细信息

制备了100%SAPO-34,30%SAPO-34和介孔-SAPO-34三种不同类型的SAPO-34分子筛催化剂,并采用氮吸附、扫描电镜、X射线衍射和红外光谱等方法对催化剂进行了表征.三种催化剂的微孔结构、比表面积和总酸量近似,但具有不同的催化剂组成和次级结构.以1-己烯裂解为模型反应考察了三种催化剂的催化活性.对于30%SAPO-34催化剂,由于添加了粘结剂,其外表面酸性和扩散性能下降,导致催化活性降低;100% SAPO-34催化剂则具有较好的催化性能;介孔SAPO-34催化剂次级结构的存在使其失活较慢,从而提高了原料的转化率.详细讨论了1-己烯催化裂解制丙烯的活性和选择性曲线,以进一步说明催化剂组成和结构的影响.

关键词： 1-己烯催化裂解丙烯扩散 SAPO-34

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A pH-responsive biomimetic drug delivery nanosystem for targeted chemo-photothermal therapy of tumors

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Nano Research 2022年第5期15卷 4274-4284页

作者： Yanmin Ju Zhiyi Wang zeeshan Ali Hongchen Zhang Yazhou Wang Nuo Xu Hui Yin Fugeng Sheng Yanglong Hou Beijing Key Laboratory for Magnetoelectric Materials and Devices(BKL-MMD) Beijing Innovation Centre for Engineering Science and Advanced Technology(BIC-ESAT)School of Materials Science and EngineeringPeking UniversityBeijing 100871China College of Pharmacy China Pharmaceutical UniversityNanjing 211198China Synthetic and Functional Biomolecules Center Department of Chemical BiologyCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China Fifth Medical Center of Chinese PLA General Hospital Beijing 100071China

Smart drug delivery nanosystem is significant for tumor treatments due to its possibility of temporally,spatially,and dose-controlled ***,the therapeutic efficacy of drug delivery nanosystem is often compromised in cancer treatment as the enrichment of therapeutic agents in the reticuloendothelial ***,doxorubicin(DOX)loaded biomimetic drug delivery nanosystem with macrophage cell membrane(MCM)camouflaged,MnFe_(2)O_(4)-DOX-MCM nanocube(NC),is developed for cancer treatment with tumor targeting,pH-stimuli drug release,and chemo-photothermal therapeutic *** nanosystem shows the capability of immune escape and enhanced cellular uptake of cancer cells due to the MCM ***-labile bond between the MnFe2O4 NCs and DOX remains stable at physiological condition and release drugs immediately in response to the endo-/lysosome pH ***,the photothermal effect of the nanosystem destroys tumor tissue,which further promotes chemotherapeutic *** vivo results demonstrate the tumor homing ability and produce a notable synergistic therapeutic effect of the ***,biomimetic pH-responsive drug delivery nanosystem,MnFe_(2)O_(4)-DOX-MCM NCs,is an effective nanoplatform,which might be potential application for cancer synergistic treatment.

关键词： drug delivery macrophage cell membrane pH stimuli synergistic therapy

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Assessing Secure OpenID-Based EAAA Protocol to Prevent MITM and Phishing Attacks in Web Apps

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Computers, Materials & Continua 2023年第6期75卷 4713-4733页

作者： Muhammad Bilal Sandile C.Showngwe Abid bashir Yazeed Y.Ghadi College of Computer Science and Technology Zhejiang UniversityHangzhou310027China Department of Mathematical Statistics and Actuarial Science Faculty of Natural and Agricultural SciencesUniversity of the Free StateBloemfontein9301South Africa Department of Computer Science National Textile UniversityFaisalabad38000Pakistan Department of Computer Science/Software Engineering Al Ain UniversityAbu DhabiUAE

To secure web applications from Man-In-The-Middle(MITM)and phishing attacks is a challenging task *** this purpose,authen-tication protocol plays a vital role in web communication which securely transfers data from one party to *** authentication works via OpenID,Kerberos,password authentication protocols,***,there are still some limitations present in the reported security *** this paper,the presented anticipated strategy secures both Web-based attacks by leveraging encoded emails and a novel password form pattern *** proposed OpenID-based encrypted Email’s Authentication,Authorization,and Accounting(EAAA)protocol ensure security by relying on the email authenticity and a Special Secret Encrypted Alphanumeric String(SSEAS).This string is deployed on both the relying party and the email server,which is unique and *** first authentication,OpenID Uniform Resource Locator(URL)identity,is performed on the identity provider side.A second authentication is carried out by the hidden Email’s server side and receives a third authentication *** Email’s third SSEAS authentication link manages on the relying party(RP).Compared to existing cryptographic single sign-on protocols,the EAAA protocol ensures that an OpenID URL’s identity is secured from MITM and phishing *** study manages two attacks such as MITM and phishing attacks and gives 339 ms response time which is higher than the already reported methods,such as Single Sign-On(SSO)and *** experimental sites were examined by 72 information technology(IT)specialists,who found that 88.89%of respondents successfully validated the user authorization provided to them via *** proposed EAAA protocol minimizes the higher-level risk of MITM and phishing attacks in an OpenID-based atmosphere.

关键词： Secure user authentication SSO OpenID phishing attack MITM attack

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