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High Voltage 2022年第6期7卷 1185-1193页

作者： Shakeel akram Peng Wang Pengfei Meng Gian Carlo Montanari Farhan Hameed Malik College of Electrical Engineering Sichuan UniversityChengduChina Center for Advanced Power Systems Florida State UniversityTallahasseeFloridaUSA Department of Electromechanical Engineering Abu Dhabi PolytechnicAbu DhabiUnited Arab Emirates

This paper analyses the impact of square wave pulse voltage deadtime on the partial discharge(PD)and the lifetime of turn-to-turn insulation.A bipolar repetitive pulse voltage with a deadtime of 0–10μs is produced using double half-bridge solid-state switches having push–pull technology controlled by a field-programmable gate *** mechanism of the discharge process at rising and falling edges of the pulse voltage before and after deadtime is analysed in *** discharge amplitude and PD probability at the rising/falling edges of the voltage waveform increase as the deadtime increases from 0 to 10μs due to the remanent *** number of PD and their intensity is higher at the first rising/falling edges of pulse voltage as compared to the second rising/falling edges for all deadtimes 0–10μ*** the deadtime increases beyond 2μs,the number of PDs increases and concentrates at a specific phase angle of rising/falling *** localise discharges degrade the insulation material and reduce its *** study helps to identify the inverter-fed motor insulation faults due to *** can provide guidelines to motor insulation designers to determine the limit value of deadtime to compensate PD and ensure the safer operation of such motors.

关键词： dead insulation inverter

A Survey on Single-Valued Neutrosophic K-Algebras

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Journal of Mathematical Research with Applications 2020年第3期40卷 221-245页

作者： Muhammad akram Kar-Ping SHUM Department of Mathematics University of the PunjabNew Campus Institute of Mathematics Yunnan University

In this survey, we first present a brief overview of logical algebras. We then discuss concepts of single-valued neutrosophic K-subalgebras, single-valued neutrosophic soft K-algebras and single-valued neutrosophic topological K-algebras. Moreover, we discuss various fundamental concepts which include interior, closure, C5-connectivity, super connectivity, compactness and Hausdorffness of single-valued neutrosophic topological K-algebras.

关键词： K-algebras single-valued neutrosophic sets homomorphism neutrosophic topological K-algebras

Adsorptive removal of phosphate by the bimetallic hydroxide nanocomposites embedded in pomegranate peel

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Journal of Environmental Sciences 2020年第5期32卷 189-198页

作者： Muhammad akram Xing Xu Baoyu Gao Qinyan Yue Shang Yanan Rizwan Khan Muhammad Ali Inam Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityQingdao 266200China Department of Chemical Engineering Quaid-e-Awam University of EngineeringScience and Technology(QUEST)Naiuabshah 67480SindfiPakistan Institute of Environmental Sciences and Engineering(IESE) School of Civil and Environmental Engineering(SCEE)National University of Sciences and Technology(NUST)H-12 CampusIslamabad 44000Pakistan

This study aimed to fabricate new and effective material for the efficiency of phosphate *** types of adsorbent materials,the zirconium hydroxides embedded in pomegranate peel(Zr/Peel)and zirconium-lanthanum hydroxides embedded in pomegranate peel(Zr-La/Peel)were *** electronic microscopy(SEM),x-ray photoelectron spectroscopy(XPS)and x-ray diffraction(XRD)were evaluated to give insight into the physicochemical properties of these ***-La/Peel exceeded the adsorption efficiency of Zr/Peel adsorbents in batch adsorption experiments at the same pH *** peel as a host can strive to have a strong"shielding effect"to increase the steadiness of the entrenched Zr and La *** and Zr are hydroxide metals that emit many hydrogen ions during the hydrolysis reaction,which contribute to protonation and electrostatic *** highest adsorption capacity of La-Zr/Peel for phosphate was calculated to be40.21 mg/g,and pseudo second-order equation is very well fitted for kinetic *** adsorption efficiency was reduced by an increase of *** the background of coexisting Cl-,little effect on adsorption efficiency was observed,while adsorption capacities were reduced by almost 20-30%with the coexistence of SO42-,NO3-and humic acid(HA).

关键词： Bimetallic hydroxides Pomegranate peel Phosphate Adsorption

Deep brain stimulation for psychiatric disorders: roleof imaging in identifying/confirming DBS targets,predicting, and optimizing outcome and unravellingmechanisms of action

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Psychoradiology 2021年第3期1卷 118-151页

作者： Dejan Georgiev Harith akram Marjan Jahanshahi Department of Clinical and Movement Neurosciences UCL Queen Square Institute of NeurologyQueen SquareLondonWC1N 3BGUK Department of Neurology University Medical Centre LjubljanaZaloska cesta 21000 LjubljanaSlovenia Artificial Intelligence Laboratory Faculty of Computer and Information ScienceUniversity of LjubljanaVecna pot 1131000 LjubljanaSlovenia The Clinical Hospital of Chengdu Brain Science Institute MOE Key Laboratory for NeuroinformationUniversity of Electronic Science and Technology of ChinaChengdu611731China

Following the established application of deep brain stimulation(DBS)in the treatment of movement disorders,new non-neurological indications have emerged,such as for obsessive–compulsive disorders,major depressive disorder,dementia,Gilles de la Tourette Syndrome,anorexia nervosa,and *** DBS is a network mod-ulation surgical treatment,the development of DBS for both neurological and psychiatric disorders has been partly driven by advances in neuroimaging,which has helped explain the brain networks *** in magnetic resonance imaging connectivity and electrophysiology have led to the development of the con-cept of modulating widely distributed,complex brain ***,the increasing number of targets for treating psychiatric disorders have indicated that there may be a convergence of the effect of stimulating dif-ferent targets for the same disorder,and the effect of stimulating the same target for different *** aim of this paper is to review the imaging studies of DBS for psychiatric ***,and particularly connectivity analysis,offers exceptional opportunities to better understand and even predict the clinical out-comes of DBS,especially where there is a lack of objective biomarkers that are essential to properly guide DBS pre-and *** future,imaging might also prove useful to individualize DBS ***,one of the most important aspects of imaging in DBS is that it allows us to better understand the brain through observing the changes of the functional connectome under neuromodulation,which may in turn help explain the mechanisms of action of DBS that remain elusive.

关键词： deep brain stimulation psychiatric disorders major depressive disorder obsessive–compulsive disorder dementia

2-Methylimidazole assisted ultrafast synthesis of carboxylate-based metal–organic framework nano-structures in aqueous medium at room temperature

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Science Bulletin 2019年第15期64卷 1103-1109页

作者： Shaheed Ullah Bilal akram Hassan Ali Hao Zhang Haozhou Yang Qingda Liu Xun Wang Key Laboratory of Organic Opteoelectronics and Molecular Engineering Department of Chemistry Tsinghua University

Carboxylate-based metal–organic frameworks(CMOFs)have received considerable attentions for their high stability,catalytic activity,and ***,synthesis of CMOFs requires high temperature,pressure,and long reaction ***,we explored the activity of 2-methylimidazole(2-MIM)for ultrafast synthesis of CMOF nanostructures(CMOFNs),in aqueous medium at room temperature and reaction time of 10 *** CMOFNs have been synthesized by using Al3+,Cr3+,Cu2+,Fe3+,In3+,or Cd2+salt and1,4-bezenedicarboxylic acid,or 1,3,5-benzenetricarboxylic *** this technique,the CMOFs with space time yield 181–501 kgcrystal sizes of ca.200–700 nm was obtained.

关键词： Metal-organic framework Carboxylate 2-Methylimidazole Room temperature synthesis Nanostructures

Metformin effect on internal carotid artery blood flow assessed by area under the curve of carotid artery Doppler in women with polycystic ovarian syndrome

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World Journal of Clinical Cases 2023年第6期11卷 1318-1329页

作者： Wisam akram Wassan Nori Muna Abdul Ghani Zghair Department of Obstetrics and Gynecology MustansiriyahAl Saydihya 10052BaghdadIraq Department of Radiology MustansiriyahAl Saydihya 10052BaghdadIraq

BACKGROUND Insulin resistance(IR)was reported in most polycystic ovarian syndrome(PCOS)***,a biguanide drug,successfully reduced *** Model Assessment for IR(HOMA-IR)and Doppler parameters assessed metformin's *** To verify whether the area under the curve of the internal carotid artery(AUC-ICA)Doppler wave can be a useful marker for assessing IR among PCOS cases who presented with menstrual irregularity and were treated with metformin over 6 *** An observational,cross-sectional study recruited 54 eligible PCOS women;the anthropometrics were as follows:age,body mass index(BMI),menstrual cycle days,biochemical serum cholesterol,low and high-density lipoprotein,sex hormone-binding globulin,fasting blood glucose,and HOMA-IR,hormonal testosterone,luteinizing hormone over follicle-stimulating hormone ratio,and ultrasonic pulsatility index(PI)and resistance index(RI),carotid artery intima-media thickness(CIMT)and(AUC-ICA)parameters were initially recorded and repeated 3 mo and 6 mo later with metformin tab 500 mg;three times/day for 6 *** addition,AUC-ICA was assessed by taking repeated systolic and diastolic wave height *** Metformin caused a progressive reduction in BMI,menstrual cycle days,biochemical hormonal,and Doppler parameters(CIMT,PI,RI,and AUC-ICA).AUC-ICA correlated strongly to all PCOS ***-ICA correlated inversely with treatment time(r=-0.98,P<0.001)and positively with HOMA-IR(r=0.98,P<0.0001).Via the best subset regression model,the AUC-ICA had the highest predictive value for *** AUC-ICA preceded PI,RI,and CIMT with a strong,meaningful correlation to all PCOS parameters,making it a reliable marker for the assessment of IR,especially during metformin *** studies are recommended to promote the application in practice.

关键词： Carotid artery intima-media thickness Insulin resistance Internal carotid artery Doppler Metformin Polycystic ovarian syndrome

Fuzzy Based Hybrid Focus Value Estimation for Multi Focus Image Fusion

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Computers, Materials & Continua 2022年第4期71卷 735-752页

作者： Muhammad Ahmad M.Arfan Jaffar Fawad Nasim Tehreem Masood Sheeraz akram The Superior University Lahore 54000Pakistan University of Pittsburgh 15213USA

Due to limited depth-of-field of digital single-lens reflex cameras,the scene content within a limited distance from the imaging plane remains in focus while other objects closer to or further away from the point of focus appear as blurred(out-of-focus)in the ***-Focus Image Fusion can be used to reconstruct a fully focused image from two or more partially focused images of the same *** this paper,a new Fuzzy Based Hybrid Focus Measure(FBHFM)for multi-focus image fusion has been *** block size is very critical step for multi-focus image *** Swarm Optimization(PSO)algorithm has been used to find optimal size of the block of the images for extraction of focus measure *** finding optimal blocks,three focus measures Sum of Modified Laplacian,Gray Level Variance and Contrast Visibility has been extracted and combined these focus measures by using intelligent fuzzy *** based hybrid intelligent focus values were estimated using contrast visibility measure to generate focused *** sets of multi-focus images have been used in detailed experimentation and compared the results with state-of-the-art existing techniques such as Genetic Algorithm(GA),Principal Component Analysis(PCA),Laplacian Pyramid discrete wavelet transform(DWT),and aDWT for image *** has been found that proposed method performs well as compare to existing methods.

关键词： Fuzzy logic multi-focus image fusion defocus focus contrast visibility focus measure

A Double-Branch Xception Architecture for Acute Hemorrhage Detection and Subtype Classification

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Computers, Materials & Continua 2023年第9期76卷 3727-3744页

作者： Muhammad Naeem akram Muhammad Usman Yaseen Muhammad Waqar Muhammad Imran Aftab Hussain Department of Computer Science COMSATS University IslamabadIslamabad45550Pakistan Department of Software Engineering Capital University of Science&TechnologyIslamabad44000Pakistan

This study presents a deep learning model for efficient intracranial hemorrhage(ICH)detection and subtype classification on non-contrast head computed tomography(CT)*** refers to bleeding in the skull,leading to the most critical life-threatening health condition requiring rapid and accurate *** is classified as intra-axial hemorrhage(intraventricular,intraparenchymal)and extra-axial hemorrhage(subdural,epidural,subarachnoid)based on the bleeding location inside the *** computer-aided diagnoses(CAD)-based schemes have been proposed for ICH detection and classification at both slice and scan ***,these approaches performonly binary classification and suffer from a large number of parameters,which increase storage ***,the accuracy of brain hemorrhage detection in existing models is significantly low for medically critical *** overcome these problems,a fast and efficient system for the automatic detection of ICH is *** designed a double-branch model based on xception architecture that extracts spatial and instant features,concatenates them,and creates the 3D spatial context(common feature vectors)fed to a decision tree classifier for final *** data employed for the experimentation was gathered during the 2019 Radiologist Society of North America(RSNA)brain hemorrhage detection *** model outperformed benchmark models and achieved better accuracy in intraventricular(99.49%),subarachnoid(99.49%),intraparenchymal(99.10%),and subdural(98.09%)categories,thereby justifying the performance of the proposed double-branch xception architecture for ICH detection and classification.

关键词： Computed tomography convolutional neural networks intracranial hemorrhage xception architecture

Binary phase solid-state photopolymerization of acrylates： design, characterization and biomineralization of 3D scaffolds for tissue engineering

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Frontiers of Materials Science 2017年第4期11卷 307-317页

作者： Inamullah MAITLO Safdar ALI Muhammad Yasir akram Farooq Khurum SHEHZAD Jun NIE State Key Laboratory of Chemical Resource Engineering & Beijing Laboratory of Biomedical Materials Beijing University of Chemical Technology Beijing 100029 China

Porous polymer scaffolds designed by the cryogel method are attractive materials for a range of tissue engineering applications. However, the use of toxic cross- linker for retaining the pore structure limits their clinical applications. In this research, acrylates （HEA/PEGDA, HEMA/PEGDA and PEGDA） were used in the low-temperature solid-state photopolymerization to produce porous scaffolds with good structural retention. The morphology, pore diameter, mineral deposition and water absorption of the scaffold were characterized by SEM and water absorption test respectively. Elemental analysis and cytotoxicity of the biomineralized scaffold were revealed by using XRD and MTT assay test. The PEGDA-derived scaffold showed good water absorption ability and a higher degree of porosity with larger pore size compared to others. XRD patterns and IR results confirmed the formation of hydroxyapatite crystals from an alternative socking process. The overall cell proliferation was excellent, where PEGDA-derived scaffold had the highest and the most uniform cell growth, while HEMAJPEGDA scaffold showed the least. These results suggest that the cell proliferation and adhesion are directly proportional to the pore size, the shape and the porosity of scaffolds.

关键词： binary phase solid-state photopolymerization phase separation tissue engineering biomineralization MTT

Floyd-Warshall Algorithm Based on Picture Fuzzy Information

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Computer Modeling in Engineering & Sciences 2023年第9期136卷 2873-2894页

作者： Shaista Habib Aqsa Majeed Muhammad akram Mohammed M.Ali Al-Shamiri School of Systems and Technology University of Management and TechnologyLahorePakistan Department of Mathematics University of the PunjabNew CampusLahorePakistan Department of Mathematics Faculty of Science and ArtsMahayl AssirKing Khalid UniversityAbhaSaudi Arabia Department of Mathematics and Computer Faculty of ScienceIbb UniversityIbbYemen

The Floyd-Warshall algorithm is frequently used to determine the shortest path between any pair of *** works well for crisp weights,but the problem arises when weights are vague and *** us take an example of computer networks,where the chosen path might no longer be appropriate due to rapid changes in network *** optimal path from among all possible courses is chosen in computer networks based on a variety of *** this paper,we design a new variant of the Floyd-Warshall algorithm that identifies an All-Pair Shortest Path(APSP)in an uncertain situation of a *** the proposed methodology,multiple criteria and theirmutual associationmay involve the selection of any suitable path between any two node points,and the values of these criteria may change due to an uncertain *** use trapezoidal picture fuzzy addition,score,and accuracy functions to find *** compute the time complexity of this algorithm and contrast it with the traditional Floyd-Warshall algorithm and fuzzy Floyd-Warshall algorithm.

关键词： Trapezoidal picture fuzzy number score function accuracy function shortest path problem Floyd-Warshall algorithm