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A computational simulation study for techno-economic comparison of conventional and stripping gas methods for natural gas dehydration

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Chinese Journal of Chemical Engineering 2020年第9期28卷 2285-2293页

作者： Muhammad salman Liangliang Zhang Jianfeng Chen Research Centerof the Ministry of Education for High Gravity Engineering and Technology Beijing University of Chemical TechnologyBeijing 100029China StateKey Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China

In the present work,the conventional natural gas dehydration method(CDM)and stripping gas method(SGM)are technically and economically analyzed,utilizing Aspen HYSYS and Aspen Process Economic Analyzer(APEA),*** optimize the CDM and SGM,the sensitivities of the water content of dry gas,reboiler duty and raw material loss are analyzed against solvent rate and stripping gas *** optimized processes are set to achieve a targeted value of water content in dry gas and analyzed at optimized *** analysis shows that SGM gives 46%lower TEG feed rate,42%lower reboiler duty and 99.97%pure regenerated ***,economic analysis reveals that SGM has 38%lower annual operating cost compared to *** to results,from both technical and economic point of view,SGM is more feasible for natural gas dehydration compared to CDM.

关键词： Natural gas dehydration Technical analysis Parametric optimization Economic study Aspen HYSYS

Accelerating Quantum Computing Readiness: Risk Management and Strategies for Sectors

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Journal of Quantum Information Science 2023年第2期13卷 33-44页

作者： Abdullah Ibrahim salman Alsalman Executive Office Riyadh Region Municipality Riyadh Saudi Arabia

The potential impact of quantum computing on various industries such as finance, healthcare, cryptography, and transportation is significant;therefore, sectors face challenges in understanding where to start because of the complex nature of this technology. Starting early to explore what is supposed to be done is crucial for providing sectors with the necessary knowledge, tools, and processes to keep pace with rapid advancements in quantum computing. This article emphasizes the importance of consultancy and governance solutions that aid sectors in preparing for the quantum computing revolution. The article begins by discussing the reasons why sectors need to be prepared for quantum computing and emphasizes the importance of proactive preparation. It illustrates this point by providing a real-world example of a partnership. Subsequently, the article mentioned the benefits of quantum computing readiness, including increased competitiveness, improved security, and structured data. In addition, this article discusses the steps that various sectors can take to achieve quantum readiness, considering the potential risks and opportunities in industries. The proposed solutions for achieving quantum computing readiness include establishing a quantum computing office, contracting with major quantum computing companies, and learning from quantum computing organizations. This article provides the detailed advantages and disadvantages of each of these steps and emphasizes the need to carefully evaluate their potential drawbacks to ensure that they align with the sector’s unique needs, goals, and available resources. Finally, this article proposes various solutions and recommendations for sectors to achieve quantum-computing readiness.

关键词： Quantum Computing Consultancy Governance Solutions Quantum Readiness Benefits of Quantum Readiness Increased Competitiveness Improved Security Structured Data Quantum Algorithms Quantum Service Provider Cybersecurity Data Management

Impact of slip boundary on sloshing motions in partially filled containers

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Chinese Science Bulletin 2011年第25期56卷 2674-2678页

作者： AHMAD salman Department of Mechanics School of Aerospace Engineering Beijing Institute of Technology

Sloshing is a kind of fluid motion inside partially filled containers. In spacecraft and other partially filled moving containers, sloshing plays an important role. The contact line between the fluid and solid boundary affects the fluid movement and sloshing during motion. A physical model for steady fluid flow with a partial slip boundary is presented and equations for this model are derived for cylindrical (tube-shaped) tanks. This gives a nonlinear system of differential equations that is solved numerically by using a Successive Over-Relaxation (SOR) technique and graphical results are shown. Variations in steady fluid flow are observed with changes in the slip length and some useful results are derived. The effects on the microscopic radius of the fluid layer in a capillary tube are also shown through graphical results.

关键词：部分填充晃动滑移容器流体运动物理模型流体流动图形显示

Recognition and Tracking of Objects in a Clustered Remote Scene Environment

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Computers, Materials & Continua 2022年第1期70卷 1699-1719页

作者： Haris Masood Amad Zafar Muhammad Umair Ali Muhammad Attique Khan salman Ahmed Usman Tariq Byeong-Gwon Kang Yunyoung Nam Wah Engineering College University of WahWah CanttPakistan Department of Electrical Engineering University of LahoreIslamabad CampusPakistan Department of Unmanned Vehicle Engineering Sejong UniversitySeoul05006Korea Department of Computer Science HITEC University TaxilaTaxila47040Pakistan College of Computer Engineering and Sciences Prince Sattam Bin Abdulaziz UniversityAl-KhrajSaudi Arabia Department of ICT Convergence Soonchunhyang UniversityAsan31538Korea

Object recognition and tracking are two of the most dynamic research sub-areas that belong to the field of Computer *** vision is one of the most active research fields that lies at the intersection of deep learning and machine *** paper presents an efficient ensemble algorithm for the recognition and tracking of fixed shapemoving objects while accommodating the shift and scale invariances that the object may *** first part uses the Maximum Average Correlation Height(MACH)filter for object recognition and determines the bounding box *** case the correlation based MACH filter fails,the algorithms switches to a much reliable but computationally complex feature based object recognition technique i.e.,affine scale invariant feature transform(ASIFT).ASIFT is used to accommodate object shift and scale object *** extracts certain features from the object of interest,providing invariance in up to six affine parameters,namely translation(two parameters),zoom,rotation and two camera axis ***,in this paper,only the shift and scale invariances are *** second part of the algorithm demonstrates the use of particle filters based Approximate Proximal Gradient(APG)technique to periodically update the coordinates of the object encapsulated in the bounding *** the end,a comparison of the proposed algorithm with other stateof-the-art tracking algorithms has been presented,which demonstrates the effectiveness of the proposed algorithm with respect to the minimization of tracking errors.

关键词： Object racking MACH filter ASIFT particle filter recognition

Vital Parameters Assessments of Starvation Tolerance of in vitro Populus alba Culture

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Phyton-International Journal of Experimental Botany 2022年第4期91卷 889-902页

作者： Mohamed Fathy Ahmed Eman Zakaria Ahmed salman Aloufi Mohammed Alqurashi Amal Alyamani Eman Fayad Eman Tawfik Hussien Horticulture Department Faculty of AgricultureAin Shams UniversityCairo11566Egypt Botany and Microbiology Department Faculty of ScienceHelwan UniversityCairo11795Egypt Department of Biotechnology Faculty of SciencesTaif UniversityTaif21944Saudi Arabia

Populus alba is a large woody deciduous *** plant has been introduced to shooting,then multiplication of rooting on Murashige and Skoog(MS)*** work was designed to estimate the effect of two factors(low levels of 1-Naphthaleneacetic acid NAA and sucrose)on *** response resulting in 6 treatments compared to the control,with twelve measured *** was a significant difference in some measurements in morphology,like plantlets fresh-weight,shoot-,root-length,and leaf *** the physiological measurements,there were significant differences in all the measured *** low concentrations of sucrose and media composition/power(MS grams/L)led to starvation in plants;however,these conditions led to enhancement in some morphological and physiological parameters to overcome the starvation effect,compared to the *** RAPD-PCR molecular marker(four decamers)was used to evaluate the new individuals’genetic variation(instability),resulting in a total polymorphism percentage of 50.83%.It was formerly known that the plantlets were identical to each other and to the mother *** this study,however,the use of distinct media power,hormonal and sucrose levels resulted in molecular variation reflected in ***’s morphological and physiological responses.

关键词： Genetic stability Populus alba RAPD-PCR somaclonal variations starvation

Simulation Model for Passive Harmonic Filters Using Matlab/Simulink: A Case Study

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Journal of Power and Energy Engineering 2023年第3期11卷 1-14页

作者： Yonis Elmi Diaa salman Faculty of Engineering and Technology Benadir University Mogadishu Somalia Department of Electrical and Electronic Engineering Cyprus International University Nicosia Northern Cyprus Mersin Türkiye

Electrical grid power quality is a global issue. The grid must supply electricity at sinusoidal voltages and currents without frequency or amplitude fluctuations. Harmonics from non-linear loads change the stable reference point voltage waveform and cause other problems. Harmonic reduction is essential for grid health. Electrical and electronic equipment users, manufacturers, and suppliers all contribute. This article presents a case analysis of the plastic processing industry, which has historically struggled with a difficulty related to the fifth harmonic. Unwanted harmonics are reduced by using a single-tuned passive filter, a double-tuned passive filter, and a second-order damped filter. The total harmonic distortion is almost identical, but the second-order damped filter provides the best harmonic mitigation, meeting the requirements of the IEE 519-1992 Standard.

关键词： Harmonic Filters Power System Quality Mitigation

Polarization multiplexing based duplex radio-over-fiber link for millimeter wave signal transmission to a ring of multiple radio access units

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Frontiers of Information Technology & Electronic Engineering 2019年第2期20卷 300-306页

作者： Tayyab MEHMOOD Hina QAYYUM salman GHAFOOR School of Electrical Engineering and Computer Science National University of Sciences and Technology

A radio-over-fiber(RoF) distributed antenna system(DAS) architecture is proposed, where millimeter wave(mm-wave) signals are transmitted to four different radio access units(RAUs) arranged in a ring *** proposed architecture transmits duplex data of 128 Mb/s to each RAU in both downlink(DL) and uplink(UL)directions. The radio frequency(RF) signals are transmitted by polarization multiplexing a multi-wavelength ***-wave signals at a frequency of 25 GHz are generated at each RAU using remote heterodyne *** proposed architecture provides increased coverage while maintaining good bit error rate(BER) results.

关键词： Radio over fiber Millimeter wave Radio access units

Microstructure and mechanical properties of AA6063 aluminum alloy wire fabricated by friction stir back extrusion(FSBE) process

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International Journal of Minerals,Metallurgy and Materials 2019年第8期26卷 1005-1012页

作者： Ghasem Jamali salman Nourouzi Roohollah Jamaati Department of Materials Engineering Babol Noshirvani University of Technology

In the present work,the friction stir back extrusion(FSBE)process was used as a novel method for the fabrication of AA6063 aluminum alloy *** electron microscopy(SEM)equipped with energy dispersive spectroscopy(EDS),tensile and hardness tests were *** FSBE via the rotational speed of 475 r/min resulted in fine equiaxed grains,and the mean grain size decreased from 179.0μm to 15.5μm due to the occurrence of dynamic recrystallization(DRX).Heat generated by the FSBE changed the size and volume fraction of the Mg2Si precipitated *** minimum particle size and maximum volume fraction obtained in the sample were processed by rotational speeds of 475 and 600 r/min,*** 475-r/min sample had the maximum hardness value due to having the lowest grain size(i.e.,15.5μm)and the presence of many fine Mg2Si precipitates in the aluminum *** increasing rotational speed up to 600 r/min,the hardness decreased,owing to the growth of both grains and *** FSBE process with a rotational speed of 475 r/min increased the tensile strength(from 150 to 209 MPa)and ductility(from 21.0%to 30.2%)simultaneously.

关键词： aluminum alloys friction stir back extrusion microstructure mechanical properties

Detection of Omicron Caused Pneumonia from Radiology Images Using Convolution Neural Network(CNN)

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Computers, Materials & Continua 2023年第2期74卷 3743-3761页

作者： Arfat Ahmad Khan Malik Muhammad Ali Shahid Rab Nawaz Bashir salman Iqbal Arshad Shehzad Ahmad Shahid Javeria Maqbool Chitapong Wechtaisong College of Computing Khon Kaen UniverityKhon Kaen40000Thailand Department of Computer Science COMSATS University IslamabadVehari61100Pakistan Department of Petroleum&Gas Engineering University of Engineering&Technology54890Pakistan Electrical Engineering Department SBASSELahore University of Management SciencesLahore54890Pakistan School of Telecommunication Engineering Suranaree University of TechnologyNakhon Ratchasima30000Thailand

COVID-19 disease caused by the SARS-CoV-2 virus has created social and economic disruption across *** ability of the COVID-19 virus to quickly mutate and transfer has created serious concerns across the *** is essential to detectCOVID-19 infection caused by different variants to take preventive measures *** existing method of detection of infections caused by COVID-19 and its variants is costly and *** impacts of theCOVID-19 pandemic in developing countries are very drastic due to the unavailability of medical facilities and infrastructure to handle the *** is the major symptom of COVID-19 *** radiology of the lungs in varies in the case of bacterial pneumonia as compared to COVID-19-caused *** pattern of pneumonia in lungs in radiology images can also be used to identify the cause associated with *** this paper,we propose the methodology of identifying the cause(either due to COVID-19 or other types of infections)of pneumonia from radiology ***,because different variants of COVID-19 lead to different patterns of pneumonia,the proposed methodology identifies pneumonia,the COVID-19 caused pneumonia,and Omicron caused pneumonia from the radiology *** fulfill the above-mentioned tasks,we have used three Convolution Neural Networks(CNNs)at each stage of the proposed *** results unveil that the proposed step-by-step solution enhances the accuracy of pneumonia detection along with finding its cause,despite having a limited dataset.

关键词： COVID-19 pneumonia radiology images omicron convolution neural network(CNN) microscopy