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Advances in DNA methylation and its role in cytoplasmic male sterility in higher plants

Journal of Integrative Agriculture 2024年第1期23卷 1-19页

作者： Atiqur rahman hasan sofiur rahman Shakil Uddin Naima Sultana Shirin Akhter Ujjal Kumar Nath Shamsun Nahar Begum Mazadul Islam Afroz Naznin Nurul Amin Sharif Ahmed Akbar Hossain Department of Genetics and Plant Breeding Bangladesh Agricultural UniversityMymensingh 2202Bangladesh Plant Breeding Division Bangladesh Institute of Nuclear AgricultureMymensingh 2202Bangladesh Tuber Crop Research Centre Bangladesh Agricultural Research Institute(BARI)Joydebpur 1701Bangladesh Horticulture Research Centre Bangladesh Agricultural Research Institute(BARI)Joydebpur 1701Bangladesh Biotechnology Division Bangladesh Agricultural Research Institute(BARI)Joydebpur 1701Bangladesh International Rice Research Institute Bangladesh OfficeDhaka 1213Bangladesh Division of Soil Science Bangladesh Wheat and Maize Research InstituteDinajpur 5200Bangladesh

The impact of epigenetic modifications like DNA methylation on plant phenotypes has expanded the possibilities for crop *** methylation plays a part in the regulation of both the chromatin structure and gene expression,and the enzyme involved,DNA methyltransferase,executes the methylation process within the plant *** regulating crucial biological pathways,epigenetic changes actively contribute to the creation of the ***,epigenome editing may assist in overcoming some of the drawbacks of genome editing,which can have minor off-target consequences and merely facilitate the loss of a gene’s *** drawbacks include gene knockout,which can have such off-target *** review provides examples of several molecular characteristics of DNA methylation,as well as some plant physiological processes that are impacted by these epigenetic changes in the *** also discuss how DNA alterations might be used to improve crops and meet the demands of sustainable and environmentally-friendly farming.

关键词： DNA methylation epigenetics CMS male sterility chromatin architecture gene expression higher plants

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Intelligently Tuned Wavelet Parameters for GPS/INS Error Estimation

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International Journal of Automation and computing 2011年第4期8卷 411-420页

作者： Ahmed Mudheher hasan Khairulmizam Samsudin Abd rahman Ramli Computer Systems Research Group Department of Computer and Communication Systems University Putra Malaysia 43400 UPM-Serdang Malaysia

This paper presents a new algorithm for de-noising global positioning system （GPS） and inertial navigation system （INS） data and estimates the INS error using wavelet multi-resolution analysis algorithm （WMRA）-based genetic algorithm （GA） with a well-designed structure appropriate for practical and real time implementations because of its very short training time and elevated accuracy. Different techniques have been implemented to de-noise and estimate the INS and GPS errors. Wavelet de-noising is one of the most exploited techniques that have been recently used to increase the precision and reliability of the integrated GPS/INS navigation system. To ameliorate the WMRA algorithm, GA was exploited to optimize the wavelet parameters so as to determine the best wavelet filter, thresholding selection rule （TSR）, and the optimum level of decomposition （LOD）. This results in increasing the robustness of the WMRA algorithm to estimate the INS error. The proposed intelligent technique has overcome the drawbacks of the tedious selection for WMRA algorithm parameters. Finally, the proposed method improved the stability and reliability of the estimated INS error using real field test data.

关键词： Global positioning system (GPS) inertial navigation system (INS) wavelet multi-resolution analysis (WMRA) genetic algorithm (GA) inertial measurement unit (IMU) level of decomposition (LOD) threshold selection rule (TSR).

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Chloride ingress and macro-cell corrosion of steel in concrete made with recycled brick aggregate

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Frontiers of Structural and Civil Engineering 2021年第6期15卷 1358-1371页

作者： Tarek Uddin MOHAMMED Mahfuzur rahman Ahmed SABBIR Mohammad Mehedi hasan Abdullah Al MAMUN Department of Civil and Environmental Engineering Islamic University of TechnologyBoard BazarGazipur 1704Bangladesh Department of Civil Engineering University of Information Technology and SciencesBaridharaDhaka 1202Bangladesh Bangladesh Road Research Laboratory Roads and Highways DepartmentMirpurDhaka 1216Bangladesh

An investigation on chloride ingress and macro-cell corrosion of steel bars in concrete made with recycled brick aggregate(RBA)was carried *** control cases,virgin brick aggregate(BA)and stone aggregate(SA)were also *** cylindrical and cracked prism specimens were studied for 16 different *** prism specimens were made with a segmented steel bar providing electrical connection from outside of the specimens to measure macro-cell corrosion current continuously under seawater splash exposure for a period of 30 d using a data *** specimens were submerged in 3%NaCl solution at a temperature of 40℃ to investigate chloride ingress in concrete made with RBA,BA,and SA after 120 and 180 ***-cell potential,corrosion area,and depths of corrosion were also *** chloride ingress as well as corrosion of steel bars in concrete made with the different types of aggregate is ordered as RBA>BA>SA.

关键词： brick aggregate chloride ingress macro-cell corrosion recycled brick aggregate

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Investigation of accuracy of pavement mechanistic empirical prediction performance by incorporating Level 1 inputs

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Journal of Traffic and Transportation Engineering(English Edition) 2020年第2期7卷 259-268页

作者： Md Mehedi hasan A.S.M.Asifur rahman Rafiqul A.Tarefder Department of Civil Engineering University of New MexicoAlbuquerqueNM 87131USA Texas A&M Transportation Institute Texas A&M UniversityCollege StationTX 77845USA

The recently developed AASHTOWare pavement mechanistic empirical(M-E)design requires advanced characterization of pavement *** particular,M-E Level 1 analysis requires materials input parameters to be obtained from the laboratory test *** cooperation with the New Mexico Department of Transportation(NMDOT),six pavement sites were selected to compare M-E Level 1 predicted performances from laboratory tested data with the field *** materials such as subgrade,base,asphalt concrete,binder,aggregate,etc.,were collected from these pavements sites during *** dynamic modulus,fatigue endurance limit(FEL),dynamic shear rheometer,and resilient modulus tests were conducted on the collected *** these parameters,pavement sections,as constructed,were modeled and analyzed in M-E at Levels 1,2 and *** predicted distress quantities for international roughness index(IRI)and rutting were compared with the field collected data as well as among the three design *** analysis results demonstrated that M-E overpredicts IRI and rutting in the pavement compared to the field *** was also observed that Level 1 showed the lowest rutting,whereas the maximum rutting was found at Level *** dynamic modulus of AC layer was underpredicted at Levels 2 and 3 resulting in higher rutting and IRI.

关键词： Pavement M-E Rutting Validation IRI Design

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Investigation of a solid particle deposition velocity in drag reducing fluids with salinity

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Petroleum Research 2024年第3期9卷 347-358页

作者： Chinemerem Obi Mohammad Azizur rahman Ibrahim Hassan Rashid hasan Texas A&MUniversity Qatar Texas A&M University CsCollege StationUSA

Optimal and cost-effective drilling operations in extended-reach horizontal wells depend on efficient solid cuttings removal from the *** solids-suspended multiphase processes such as crude petroleum transportation,separation,and processing of oil and gas streams also require the efficient removal of these *** terminal settling velocity(Vts)of the solid particle is a vital parameter that controls the removal efficiency of these *** a drilling scenario when there is a hold on fluid cir-culation such as connection time,the accurate estimation of Vs provides the driller with time available to prevent solid *** severe conditions,this can result in a stuck pipe,especially for extended-reach horizontal *** this work,both spherical and non-spherical particle deposition were experi-mentally investigated in several fluid rheology and *** concentrations(0.1 vol%and 0.05 vol%.)of partially-hydrolyzed polyacrylamide(PHPA)were used as a drag-reducing additive for water-based drilling *** PHPA drag-reducing fluid(reduced pressure loss)acts as a turbulence *** PHPA polymer chain suppresses any turbulence in the flow,reducing the turbulent eddy *** effects of salinity(3 wt.%Nacl and 3 wt.%CaCl_(2) contamination)on solid particle settling velocity(Vs)in drag-reducing fluids were also *** velocity was achieved for all experiments and seemed to increase with increased diameter/***,cases when this trend was not consistent were observed and therefore a new parameter of@(sphericity index×diameter)was pro-posed.V,increases with Q value for all *** drilling,PHPA also aids in sealing the fracture in the *** and without salt in the fluid,how lowering drag affected the settling velocity of solid particles(drill cuttings)could be *** settling velocity tests will be improved in drag-reducing PHPA solutions with the knowledge from this study.

关键词： Deposition velocity Drag reducingfluids Salinity Visualization Drilling

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Industrial IoT Based Condition Monitoring for Wind Energy Conversion System

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CSEE Journal of Power and Energy Systems 2021年第3期7卷 654-664页

作者： Md Liton Hossain Ahmed Abu-Siada S.M.Muyeen Md Mubashwar hasan Momtazur rahman Department of Electrical and Computer Engineering Curtin UniversityPerthAustralia School of Science Engineering and ITFederation UniversityAustralia Edith Cowan University Australia

Wind energy has been identified as the second dominating source in the world renewable energy generation after *** and distribution of wind energy has brought technology revolution by developing the advanced wind energy conversion system(WECS)including multilevel inverters(MLIs).The conventional rectifier produces ripples in their output waveforms while the MLI suffers from voltage balancing issues across the DC-link *** paper proposes a simplified proportional integral(PI)-based space vector pulse width modulation(SVPWM)to minimize the output waveform ripples,resolve the voltage balancing issue and produce better-quality output *** experiences various types of faults particularly in the DC-link capacitor and switching devices of the power *** faults,if not detected and rectified at an early stage,may lead to catastrophic failures to the WECS and continuity of the power *** paper proposes a new algorithm embedded in the proposed PI-based SVPWM controller to identify the fault location in the power converter in real *** most wind power plants are located in remote areas or offshore,WECS condition monitoring needs to be developed over the internet of things(IoT)to ensure system *** this paper,an industrial IoT algorithm with an associated hardware prototype is proposed to monitor the condition of WECS in the real-time environment.

关键词： Asset management condition monitoring fault diagnosis industrial internet of things(IoT) wind energy conversion system

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Hydrothermal synthesis of triangular CeCO3OH particles and photoluminescence properties

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Chinese Chemical Letters 2017年第3期28卷 663-669页

作者： Md.hasan Zahir Shamseldin A.Mohamed Mohammad Mizanur rahman Ateeq Ur Rehman Center of Research Excellence in Renewable Energy Research Institute King Eahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Center of Research Excellence in Nanotechnology King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Center of Research Excellence in Corrosion King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia Center for Engineering Research King Fahd University of Petroleum and Minerals Dhahran 31261 Saudi Arabia

Ru/CeO_2[RC] and Ru/CeO_2/ethylene glycol（EG） [RCE] nanoparticles were produced by performing a simple hydrothermal reaction at 200℃ for 24 h and found to have two distinct morphologies. The RC nanoparticles are phase pureCeO_2; triangular highly crystallineCeCO_3OH nanoparticles are formed from the solution containing EG under the same hydrothermal reaction conditions at p H 8.5. EG plays an important role in the formation of the triangularCeCO_3OH nanoparticles. The polycrystallineCeCO_3OH nanoparticles retain their triangular structure even after calcination at 600℃in air but are transformed into a pureCeO_2 phase. The room temperature photoluminescence of the RC and RCE nanoparticles and of RCE calcined at 600℃[RCE-600] was also investigated. It was found that the high crystallinity triangular RCE-600 sample exhibits the highest photoluminescence intensity.

关键词： CeCO_3OH particles Ru/CeO_2 Ethylene glycol Hydrothermal process Luminescence

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Detecting anomalies in blockchain transactions using machine learning classifiers and explainability analysis

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Blockchain(Research and Applications) 2024年第3期5卷 106-122页

作者： Mohammad hasan Mohammad Shahriar rahman Helge Janicke Iqbal H.Sarker Department of Computer Science and Engineering Premier University4000 ChitagongBangladesh Department of Computer Science and Engineering United International University1212 DhakaBangladesh Cyber Security Cooperative Research Centre 6027 PerthAustralia Centre for Securing Digital Futures Edith Cowan University6027 PerthAustralia

As the use of blockchain for digital payments continues to rise,it becomes susceptible to various malicious *** detecting anomalies within blockchain transactions is essential for bolstering trust in digital ***,the task of anomaly detection in blockchain transaction data is challenging due to the infrequent occurrence of illicit *** several studies have been conducted in the field,a limitation persists:the lack of explanations for the model’s *** study seeks to overcome this limitation by integrating explainable artificial intelligence(XAI)techniques and anomaly rules into tree-based ensemble classifiers for detecting anomalous Bitcoin *** shapley additive explanation(SHAP)method is employed to measure the contribution of each feature,and it is compatible with ensemble ***,we present rules for interpreting whether a Bitcoin transaction is anomalous or ***,we introduce an under-sampling algorithm named XGBCLUS,designed to balance anomalous and non-anomalous transaction *** algorithm is compared against other commonly used under-sampling and over-sampling ***,the outcomes of various tree-based single classifiers are compared with those of stacking and voting ensemble *** experimental results demonstrate that:(i)XGBCLUS enhances true positive rate(TPR)and receiver operating characteristic-area under curve(ROC-AUC)scores compared to state-of-the-art under-sampling and over-sampling techniques,and(ii)our proposed ensemble classifiers outperform traditional single tree-based machine learning classifiers in terms of accuracy,TPR,and false positive rate(FPR)scores.

关键词： Anomaly detection Blockchain Bitcoin transactions Data imbalance Data sampling Explainable AI Machine learning Decision tree Anomaly rules

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Predictive car-following scheme for improving traffic flows on urban road networks

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Control Theory and Technology 2019年第4期17卷 325-334页

作者： A.S.M.BAKIBILLAH Mahmudul hasan Md Mustafijur rahman Md Abdus Samad KAMAL School of Engineering Monash UniversityBandar SunwaySelangorMalaysia Technology Operations Department Grameenphone Ltd.DhakaBangladesh Department of Electrical and Electronic Engineering Manarat International UniversityDhakaBangladesh Division of Mechanical Science and Technology Graduate School of Science and TechnologyGunma UniversityJapan

Driving behavior is one of the main reasons that causes bottleneck on the freeway or restricts the capacity of signalized *** paper proposes a car-following scheme in a model predictive control(MPC)framework to improve the traffic flow behavior,particularly in stopping and speeding up of individual vehicles in dense urban traffic under a connected vehicle(CV)*** information received through vehicle-to-vehicle(V2V)communication,the scheme predicts the future states of the preceding vehicle and computes the control input by solving a constrained optimization problem considering a finite future *** objective function is to minimize the weighted costs due to speed deviation,control input,and unsafe *** scheme shares the planned driving information with the following vehicles so that they can make better cooperative driving *** proposed car-following scheme is simulated in a typical driving scenario with multiple vehicles in dense traffic that has to stop at red signals in multiple *** speeding up or queue clearing and stopping characteristics of the traffic using the proposed scheme is compared with the existing car-following scheme through numerical simulation.

关键词： Car-following scheme model predictive control vehicle string connected vehicle environment distributed control

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Towards a blockchain-SDN-based secure architecture for cloud computing in smart industrial IoT

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Digital Communications and Networks 2023年第2期9卷 411-421页

作者： Anichur rahman Md Jahidul Islam Shahab S.Band Ghulam Muhammad Kamrul hasan Prayag Tiwari Department of Computer Science and Engineering National Institute of Textile Engineering and Research(NITER)Constituent Institute of the University of DhakaSavarDhaka1350Bangladesh Department of Computer Science and Engineering Green University of BangladeshDhakaBangladesh Future Technology Research Center College of FutureNational Yunlin University of Science and TechnologyDouliouTaiwanChina Department of Computer Engineering College of Computer and Information SciencesKing Saud UniversityRiyadhSaudi Arabia Department of Information and Communication Engineering Hankuk University of Foreign StudiesSouth Korea Department of Computer Science Aalto UniversityFinland

Some of the significant new technologies researched in recent studies include BlockChain(BC),Software Defined Networking(SDN),and Smart Industrial Internet of Things(IIoT).All three technologies provide data integrity,confidentiality,and integrity in their respective use cases(especially in industrial fields).Additionally,cloud computing has been in use for several years *** information is exchanged with cloud infrastructure to provide clients with access to distant resources,such as computing and storage activities in the *** are also significant security risks,concerns,and difficulties associated with cloud *** address these challenges,we propose merging BC and SDN into a cloud computing platform for the *** paper introduces“DistB-SDCloud”,an architecture for enhanced cloud security for smart IIoT *** proposed architecture uses a distributed BC method to provide security,secrecy,privacy,and integrity while remaining flexible and *** in the industrial sector benefit from the dispersed or decentralized,and efficient environment of ***,we described an SDN method to improve the durability,stability,and load balancing of cloud *** efficacy of our SDN and BC-based implementation was experimentally tested by using various parameters including throughput,packet analysis,response time,bandwidth,and latency analysis,as well as the monitoring of several attacks on the system itself.

关键词： Smart IIoT Blockchain SDN IoT Security Privacy OpenFlow SDN-Controller Data security Cloud computing Cloud management

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