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Single carbon metabolism–A new paradigm for microbial bioprocesses?

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Synthetic and Systems Biotechnology 2024年第2期9卷 322-329页

作者： Michael Baumschabl Özge Ata Diethard Mattanovich Austrian Centre of Industrial Biotechnology(ACIB) Vienna1190Austria University of Natural Resources and Life Sciences Department of BiotechnologyInstitute of Microbiology and Microbial BiotechnologyViennaAustria

Increasing atmospheric carbon dioxide levels,a reduction of arable land area and the dependence of first and second generation biotechnology feedstocks on agricultural products,call for alternative,sustainable feedstock sources for industrial *** direct use of CO_(2)or conversion of CO_(2)into other single carbon(C1)sources have great potential as they might help to reduce carbon emissions and do not compete with agricultural land *** we discuss the microbial use of C1 carbon sources,their potential applications in biotechnology,and challenges towards sustainable C1-based industrial biotechnology *** focus on methanol,formic acid,methane,syngas,and CO_(2)as feedstocks for bioprocesses,their assimilation pathways,current and emerging applications,and limitations of their *** mini-review is intended as a first introduction for researchers who are new to the field of C1 biotechnology.

关键词： Sustainability BioeconomyCarbon dioxide Methanol Formate Methane

A Hybrid Quantum Inspired Particle Swarm Optimization and Least Square Framework for Real-time Harmonic Estimation

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Journal of Modern Power Systems and Clean Energy 2021年第6期9卷 1548-1556页

作者： Abu bakar Waqas Muhammad Mansoor Ashraf Yasir Saifullah Department of Communication Science and Engineering School of Information Science and TechnologyFudan University Electrical Engineering Department University of Engineering and Technology

The power quality is becoming an extensively addressing aspect of the power system because of the sensitive operation of the smart grid, awareness of power quality, and the equipment of modern power systems. In this paper, we have conceived a new hybrid Quantum inspired particle swarm optimization and least square(QPSO-LS) framework for real-time estimation of harmonics presented in time-varying noisy power signals. The technique has strong, robust, and reliable search capability with powerful convergence properties. The proposed approach is applied to various test systems at different signal to noise ratio(SNR) levels in the presence of uniform and Gaussian noise. The results are presented in terms of precision, computation time, and convergence characteristics. The computation time decreases by 3-5 times as compared to the existing algorithms. The technique is further authenticated by estimating harmonics of real-time current or voltage waveforms, obtained from light emitting diode(LED) lamp and axial flux permanent magnet synchronous generator(AFPMSG). The results demonstrate the superiority of QPSO-LS over other methods such as LS-based genetic algorithm(GA), particle swarm optimization(PSO), bacterial foraging optimization(BFO), artificial bee colony(ABC), and biogeography based optimization with recursive LS(BBO-RLS) algorithms, in terms of providing satisfactory solutions with a significant amount of robustness and computation efficiency.

关键词： Harmonic estimation power quality particle swarm optimization(PSO) least square(LS) smart grid

Simulation of Vortex-Induced Vibrations of A Cylinder Using ANSYS CFX

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China Ocean Engineering 2014年第4期28卷 541-556页

作者： Abu bakar IZHAR Arshad Hussain QURESHI Shahab KHUSHNOOD University of Engineering & Technology Lahore Pakistan University of Engineering & Technology Taxila Pakistan

In this paper, vortex-induced vibrations of a cylinder are simulated by use of ANSYS CFX simulation code. The cylinder is treated as a rigid body and transverse displacements are obtained by use of a one degree of freedom spring damper system. 2-D as well as 3-D analysis is performed using air as the fluid. Reynolds number is varied from 40 to 16000 approx., covering the laminar and turbulent regimes of flow. The experimental results of （Khalak and Williamson, 1997） and other researchers are used for validation purposes. The results obtained are comparable.

关键词： vortex-induced vibrations ANSYS CFX flow induced vibrations fluid structure interaction

Catalytic methanation reaction over supported nickel-rhodium oxide for purification of simulated natural gas

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Journal of Natural Gas Chemistry 2011年第6期20卷 585-594页

作者： Wan Azelee Wan Abu bakar Rusmidah Ali Susilawati Toemen Department of Chemistry Faculty of ScienceUniversiti Teknologi Malaysia

In this research,new catalyst with high industrial impact is developed,which can catalyze the conversion of CO2 to methane through methanation reaction.A series of catalysts based on nickel oxide were prepared using wetness impregnation technique and ageing,followed by calcination at 400℃.Rh/Ni（30：70）/Al2O3 catalyst was revealed as the most potential catalyst based on the results of catalytic activity measurement monitored by Fourier Transform Infrared Spectroscopy（FTIR）and Gas Chromatography（GC）.The results showed 90.1%CO2 conversion and 70.8% yield at 400℃.

关键词： noble metal nickel oxide catalyst carbon dioxide methanation

Analysis on fused deposition modelling performance

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第12期11卷 972-977页

作者： Nur Saaidah Abu bakar Mohd Rizal ALKAHARI Hambali BOEJANG Department of Design and Innovation Faculty of Mechanical EngineeringUniversiti Teknikal Malaysia MelakaLocked Bag 1752Pejabat Pos Durian Tunggal

Fused deposition modelling (FDM) is one of rapid prototyping (RP) technologies which uses an additive fabrication *** commercially available FDM model has different types of process parameters for different *** of the desired parts require excellent surface finish as well as good *** most common parameters requiring setup are the raster angle,tool path,slice thickness,build orientation,and deposition *** purpose of this paper is to discuss the process parameters of FDM Prodigy Plus (Stratasys,Inc.,Eden Prairie,MN,USA).Various selected parameters were tested and the optimum condition was *** quality of the parts produced was accessed in terms of dimensional accuracy and surface *** optimum parameters obtained were then applied in the fabrication of the master pattern prior to silicone rubber moulding (SRM).These parameters would reduce the post processing *** dimensional accuracy and surface roughness were analyzed using coordinate measuring machine (CMM) and surface roughness tester,*** on this study,the recommended parameters will improve the quality of the FDM parts produced in terms of dimensional accuracy and surface roughness for the application of SRM.

关键词： Rapid prototyping (RP) Fused deposition modelling (FDM) Dimensional accuracy Surface roughness

A Novel Hybrid Model Based on Machine and Deep Learning Techniques for the Classification of Microalgae

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Phyton-International Journal of Experimental Botany 2023年第9期92卷 2519-2534页

作者： Volkan Kaya İsmail Akgül Özge Zencir Tanır Department of Computer Engineering Faculty of Engineering and ArchitectureErzincan Binali Yıldırım UniversityErzincan24100Türkiye Department of Biology Faculty of Arts and ScienceErzincan Binali Yıldırım UniversityErzincan24100Türkiye

Classification and monitoring of microalgae species in aquatic ecosystems are important for understanding population ***,manual classification of algae is a time-consuming method and requires a lot of effort with expertise due to the large number of families and genera in its *** recognition of microalgae species has become an increasingly important research area in image recognition in recent *** this study,machine learning and deep learning methods were proposed to classify images of 12 different microalgae species in order to successfully classify algae cells.8 Different novel models(MobileNetV3Small-Lr,MobileNetV3Small-Rf,MobileNetV3Small-Xg,MobileNetV3Large-Lr,MobileNetV3Large-Rf,MobileNetV3Large-Xg,Mobile-NetV3Small-Improved and MobileNetV3Large-Improved)have been proposed to classify these microalgae *** these proposed model structures,the best classification accuracy rate was 92.22%and the loss rate was 0.72,obtained from the MobileNetV3Large-Improved model *** addition,as a result of the experimental results obtained,metrics such as the confusion matrix,which can meet the experts in the correct diagnosis of microalgae species,were also *** research may in the future open a new avenue for the development of a cost-effective,highly sensitive computer-based system for the use of image analysis and deep learning techniques for the identification and classification of different microalgae.

关键词： Machine learning deep learning transfer learning microalgae classification

Vibrational investigation of 1-cyclopentylpiperazine:A combined experimental and theoretical study

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Science China(Physics,Mechanics & Astronomy) 2014年第9期57卷 1654-1661页

作者： BAGLAYAN zge KESAN Gürkan PARLAK Cemal ALVER zgür SENYEL Mustafa Department of Physics Science Faculty Anadolu University Institute of Physics and Biophysics Faculty of Science University of South Bohemia Department of Physics Dumlupinar University

FT-IR and Raman spectra of 1-cyclopentylpiperazine(1cppp)have been experimentally examined in the region of 4000–*** optimized geometric parameters,conformational equilibria,normal mode frequencies and corresponding vibrational assignments of 1cppp(C9H18N2)are theoretically examined by means of B3LYP hybrid density functional theory(DFT)method together with 6-31++G(d,p)basis *** the basis of potential energy distribution(PED)reliable vibrational assignments have been made and the thermodynamics functions,highest occupied and lowest unoccupied molecular orbitals(HOMO and LUMO)of 1cppp have been *** are employed for four different conformations in C1 and Cs point groups of 1cppp in gas *** between the experimental and theoretical results indicates that B3LYP method is able to provide satisfactory results for predicting vibrational frequencies and the structural parameters,vibrational frequencies and ***,C1(equatorial-axial)point group has been found as the most stable conformer of 1cppp.

关键词： 1-cyclopentylpiperazine vibrational spectra PED DFT B3LYP

Two-Stage IoT Computational Task Offloading Decision-Making in MEC with Request Holding and Dynamic Eviction

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Computers, Materials & Continua 2024年第8期80卷 2065-2080页

作者： Dayong Wang Kamalrulnizam Bin Abu bakar Babangida Isyaku Department of Computer Science Faculty of ComputingUniversiti Teknologi MalaysiaJohor BahruJohor81310Malaysia Department of Computer Science Faculty of Information Communication TechnologySule Lamido UniversityJigawa741103Nigeria

The rapid development of Internet of Things(IoT)technology has led to a significant increase in the computational task load of Terminal Devices(TDs).TDs reduce response latency and energy consumption with the support of task-offloading in Multi-access Edge Computing(MEC).However,existing task-offloading optimization methods typically assume that MEC’s computing resources are unlimited,and there is a lack of research on the optimization of task-offloading when MEC resources are *** addition,existing solutions only decide whether to accept the offloaded task request based on the single decision result of the current time slot,but lack support for multiple retry in subsequent time *** is resulting in TD missing potential offloading opportunities in the *** fill this gap,we propose a Two-Stage Offloading Decision-making Framework(TSODF)with request holding and dynamic *** Short-Term Memory(LSTM)-based task-offloading request prediction and MEC resource release estimation are integrated to infer the probability of a request being accepted in the subsequent time *** framework learns optimized decision-making experiences continuously to increase the success rate of task offloading based on deep learning *** results show that TSODF reduces total TD’s energy consumption and delay for task execution and improves task offloading rate and system resource utilization compared to the benchmark method.

关键词： Decision making internet of things load prediction task offloading multi-access edge computing

Cardiac cystic echinococcosis:Report of three cases

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Asian Pacific Journal of Tropical Medicine 2014年第11期7卷 922-924页

作者： zge Altas Sabit Sarlkaya Hakan Sacli Onur Yerlikhan Kaan Klrali Consultant Cardiovascular Surgeon Kartal Dr Lutfi Kirdar Training and Research Hospital Department of Cardiovascular Surgery Kosuyolu Heart Training & Research Hospital Department of Cardiovascular Surgery Sakarya UniversityMedical Faculty

We present a retrospective analysis of three cases of cardiac hydatidosis,who underwent surgery between 2010 and *** patients had a lesion in the interventricular septum,whereas one patient had the lesion in apicoinferior wall of *** diagnosis was made by echocardiography,but magnetic resonance imaging was utilized to assess cyst activity and extend of *** patients were placed on cardiopulmonary *** postoperative complication or death *** patients discharged uneventfully and all of them were free from hydatid disease at two years *** concluded that cardiac hydatid cysts should be removed surgically regardless of their location or extent,even in asymptomatic patients.

关键词： Ventricular septum Parasitology Echinococcosis Cysts Hydatid echinococcosis