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Parametic Model for Optimization of Battery Capacity and Power Transmitters of On-line Electric Vehicles in Closed/Open Environments

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CSEE Journal of Power and Energy Systems 2023年第1期9卷 185-196页

作者： Fatima Nisar Syed Haider Imtiaz Alam asad Waqar Toqeer Ahmed Mudassar Usman Department of Electrical Engineering School of Engineering&Applied Sciences(BSEAS)Bahria UniversityIslamabadPakistan Department of Centre for Advanced Electronics and Photovoltaic Engineering(CAEPE) International Islamic Universityand School of Interdisciplinary Engineering and Science(SINES)National University of Science and Technology(NUST)IslamabadPakistan

An on-line electric vehicle(OLEV)uses a wireless charging phenomenon,in which power transmitters are installed beneath the road and the OLEV’s battery is charged *** paper deals with the optimization of two key economic and design parameters,i.e.,the size of the battery and the power transmitters allocation.A complete model configuration of the OLEV system,including the vehicle design and power transmitter,is implemented using MATLAB/*** battery’s state of charge(SOC)rises and drops according to the vehicle’s velocity and power collection and *** mixed integer programming(MIP)model is used for cost ***,with the help of the SOC graph and MIP model,the battery size and the number of power transmitters,along with their placements,are *** proposed model is applicable to both closed and open environments as it accepts both regulated and deregulated *** test cases are performed for this *** first test case deals with regulated velocity for which we have applied the KAIST campus OLEV’s velocity along with its 13 kWh battery size and 4 power transmitters,and then applied the suggested solution with the same velocity and route i.e.,8 power transmitters with shorter lengths and reduced battery size(3.25 kWh;one-fourth of the first case).SOC is found within limits at the end of the route,saving$1600 and validating the proposed model in this *** the second test case,we use deregulated velocity and optimize both parameters,using the same approach.

关键词： Closed and open environments mixed integer programming on-line electrical vehicle power transmitters state of charge wireless charging

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Designing an optimal stope layout for underground mining based on a heuristic algorithm

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International Journal of Mining Science and Technology 2015年第5期25卷 767-772页

作者： Sandanayake Don Suneth Sameera Topal Erkan asad Mohammad Waqar Ali Mining Engineering Western Australian School of MinesCurtin University

An optimal layout or three-dimensional spatial distribution of stopes guarantees the maximum profitability over life span of an underground mining ***,stope optimization is one of the key areas in underground mine planning ***,the computational complexity in developing an optimal stope layout has been a reason for limited availability of the algorithms offering solution to this *** article shares a new and efficient heuristic algorithm that considers a three-dimensional ore body model as an input,maximizes the economic value,and satisfies the physical mining and geotechnical constraints for generating an optimal stope *** implementation at a copper deposit demonstrates the applicability and robustness of the algorithm.A parallel processing based modification improving the performance of the original algorithm in terms of enormous computational time saving is also presented.

关键词： Stope optimization Underground mining Underground mine planning Heuristic algorithm

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Surfactant-decorated graphite nanoplatelets(GNPs) reinforced aluminum nanocomposites: sintering effects on hardness and wear

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International Journal of Minerals,Metallurgy and Materials 2018年第6期25卷 704-715页

作者： Zeeshan Baig Othman Mamat Mazli Mustapha asad Mumtaz Sadaqat Ali Mansoor Sarfraz Department of Mechanical Engineering Universiti Teknologi PETRONAS Department of Fundamental and Applied Sciences Universiti Teknologi PETRONAS Sustainable Energy Technologies Center College of Engineering King Saud University

The exceptional properties of graphene make it ideal as a reinforcement to enhance the properties of aluminum matrices and this critically depends on uniform dispersion. In this study, the dispersion issue was addressed by sonication and non-covalent surface functionalization of graphite nanoplatelets（GNPs） using two types of surfactant： anionic（sodium dodecyl benzene sulfate（SDBS）） and non-ionic polymeric（ethyl cellulose（EC））. After colloidal mixing with Al powder, consolidation was performed at two sintering temperatures（550 and 620°C）. The structure, density, mechanical and wear properties of the nanocomposite samples were investigated and compared with a pure Al and a pure GNPs/Al nanocomposite sample. Noticeably, EC-based 0.5 wt% GNPs/Al samples showed the highest increment of 31% increase in hardness with reduced wear rate of 98.25% at 620°C, while a 22% increase in hardness with reduced wear rate of 96.98% at 550°C was observed, as compared to pure Al. Microstructural analysis and the overall results validate the use of EC-based GNPs/Al nanocomposites as they performed better than pure Al and pure GNPs/Al nanocomposite at both sintering temperatures.

关键词： graphite nanoplatelets (GNPs) aluminum nanocomposites surfactant hardness dispersion ultra-soincation sintering effects

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Development of stability-preserving time-limited model reduction framework for 2-D and 1-D models with error bound

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Control Theory and Technology 2022年第3期20卷 371-381页

作者： Muhammad Imran Syeda Hira Ambreen Syed Nooh Hamdani Muhammad Imran Muhammad ejaz Naveed Maria Siddiqui Department of Electrical Engineering Military College of Signals(MCS)National University of Sciences and Technology(NUST)Islamabad43000Pakistan Department of Electrical Engineering Sir Syed(Center For Advanced Studies)Institute of Technology(SSCASE)Islamabad43000Pakistan College of Science and Humanities Rumah Majmaah UniversityRumahKingdom of Saudi Arabia

Due to their complex structure,2-D models are challenging to work with;additionally,simulation,analysis,design,and control get increasingly difficult as the order of the model ***,in particular time intervals,Gawronski and Juang’s time-limited model reduction schemes produce an unstable reduced-order model for the 2-D and 1-D *** revealed some stability preservation solutions to address this key flaw which ensure the stability of 1-D reduced-order systems;nevertheless,these strategies result in large approximation ***,to the best of the authors’knowledge,there is no literature available for the stability preserving time-limited-interval Gramian-based model reduction framework for the 2-D discrete-time *** this article,2-D models are decomposed into two separate sub-models(i.e.,two cascaded 1-D models)using the condition of minimal *** reduction procedures are conducted on these obtained two 1-D sub-models using limited-time *** suggested methodology works for both 2-D and 1-D ***,the suggested methodology gives the stability of the reduced model as well as a priori error-bound expressions for the 2-D and 1-D *** results and comparisons between existing and suggested methodologies are provided to demonstrate the effectiveness of the suggested methodology.

关键词： Model reduction Weighted Gramian Limited interval Gramian Minimal realization Approximation error Error bound

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Removal of Heavy Metals from Wastewater by Using the Moringa Oleifera Press Cake

Removal of Heavy Metals from Wastewater by Using the Moringa...

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作者： Ali asad 西南科技大学

学位级别：硕士

曾经地球上的水非常的丰富,湖里的水清澈见底,河里的鱼儿种类丰富自由自在,这样的水可以供人们直接饮用也不会受到危害。但是,随着人口的增长和工业的发展,水质因为人类的开发利用而下降。废水污染的主要来源有两个:工业废水和城市生活... 详细信息

曾经地球上的水非常的丰富,湖里的水清澈见底,河里的鱼儿种类丰富自由自在,这样的水可以供人们直接饮用也不会受到危害。但是,随着人口的增长和工业的发展,水质因为人类的开发利用而下降。废水污染的主要来源有两个:工业废水和城市生活污水。工业废水包括污水排放和工业用水,例如采矿和制造业会产生大量废水,它们产生的大量废水排放到附近的河流,对珍贵的水资源造成污染。本次实验通过研究成熟辣木种子和干辣木种子中提取的辣木粉对水质的影响。辣木籽是一种廉价的局部混凝剂,本试验收集的废水在中国四川绵阳的西南科技大学校园内取得。分别制备了不同浓度2mg/L,4mg/L和6mg/L的镉和铬溶液作为校准曲线。加入一滴硝酸来还原溶液;在经过MOPC处理后,重金属浓度大幅度降低。铬和镉(2 mg/L)的去除率分别为92.85%和89.84%,铬和镉(4 mg/L)的去除率分别为82.30%和81.23%,铬和镉(6 mg/L)的去除率分别为81.53%和79.52%。废水的浑浊度为47.7 NTU,在MOPC溶液中加入MOPC后,其浑浊度降至最低9.7 NTU,最优值为20000 ppm。浊度显著增加了毛胚蛋白c的浓度,从而改变了残余浊度。浊度去除率最高为79.6%。经不同浓度的MOPC处理后,p H值在8.13.13之间波动,差异无统计学意义。当最佳浓度为15000ppm时,废水COD从236.3mg/L降至98.03 mg/L,随着MOPC溶液浓度的增加,COD值略有增加。最大COD去除率为58.51%。辣木籽饼是一种有效的重金属去除剂天然混凝剂,具有降低水中p H、浊度、EC等理化污染物的能力,是一种廉价的处理污水的材料。人们想要得到更多的安全饮用水,就可以通过这种方式来处理水,使废水得到净化,除了其它多种处理废水的方法之外,用辣木籽饼也是一种很好的处理水的方法。

关键词：辣木废水处理重金属浑浊度

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Mercury removal from aqueous solution using petal-like MoS_(2) nanosheets

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Frontiers of Environmental Science & Engineering 2021年第1期15卷 213-222页

作者： Ragini Pirarath Palani Shivashanmugam asad Syed Abdallah MElgorban Sambandam Anandan Muthupandian Ashokkumar Department of Chemistry National Institute of TechnologyTiruchirappalli-620015India Department of Chemical Engineering National Institute of TechnologyTiruchirappalli-620015India Department of Botany and Microbiology College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia School of Chemistry University of MelbourneMelbourneVic-3010Australia

Recently,different nanomaterial-based adsorbents have received greater attention for the removal of environmental pollutants,specifically heavy metals from aqueous *** this work,we synthesized few-layered MoS2 nanosheets via a surfactant-assisted hydrothermal method and utilized them as an efficient adsorbent for the removal of mercury from aqueous *** synthesized MoS2 nanosheets showed petal-like morphology as confirmed by scanning electron microscope and high-resolution transmission electron microscopic *** average thickness of the nanosheets is found to be about 57 *** high stability and negative zeta potential makes this material suitable for efficient adsorption of mercury from aqueous *** adsorption efficiency of the adsorbent was investigated as a function of pH,contact time and adsorbent *** kinetics of adsorption and reusability potential of the adsorbent were also performed.A pseudo-second-order kinetics for mercury adsorption was *** prepared MoS_(2) nanosheets showed 93%mercury removal efficiency,whereas regenerated adsorbent showed 91%and 79%removal efficiency in the respective 2^(nd) and 3^(rd) *** adsorption capacity of the adsorbent was found to be 289 mg/g at room temperature.

关键词： Anionic surfactant 2D material MoS_(2)nanosheets Mercury removal Adsorption capacity

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Developing a high-performance Al–Mg–Si–Sn–Sc alloy for essential room-temperature storage after quenching: aging regime design and micromechanisms

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Rare Metals 2023年第11期42卷 3814-3828页

作者： Shuai Pan Xin-Jian Chen Gui-Zhen Liao asad Ali Shuang-Bao Wang School of Physical Science and Technology&Collaborative Innovation Center of Sustainable Energy Materials Guangxi UniversityNanning530004China Key Laboratory of LCR Materials and Devices of Yunnan Province School of Materials and EnergyYunnan UniversityKunming650500China Electron Microscopy Center Yunnan UniversityKunming650500China

Sn microalloying can depress the adverse effect of natural aging after quenching(i.e., room-temperature storage) of Al-Mg-Si alloys. However, the other effect of Sc micro-addition to the Al-Mg-Si-Sn alloys remains elusive. Here, the optimal room-temperature storage time,properties and micromechanisms of Al-0.43 Mg-1.2Si-0.1Sn-0.1Sc(wt%) alloy are investigated by atomic-resolution scanning transmission electron microscopy(STEM),microhardness and corrosion resistance tests. The results show that the peak-aging Al-Mg-Si-Sn-Sc alloy exhibits vastly shortened peak hardening time, increased thermal stability and corrosion resistance compared with its Sc-free counterpart after a long room-temperature storage time of 1 week. Under such a designed double-stage aging regime(1-week room-temperature storage + artificial aging at 180℃), the addition of Sc to Al-Mg-Si-Sn alloy induces a decrease in diameter but an increase in length of peakhardening β″-based precipitates. In addition, a suppressed over-aging phase transition from Sc/Sn-containing β″ to β′ is identified in the Al-Mg-Si-Sn-Sc alloy. The Sn tends to segregate to the Si site in the low-density cylinder of β″ and the central site of sub-B′ in the precipitate can be occupied by Sn/Sc. Further study reveals that Sc and Sn coexist in the precursors of β″. Both reduced width of precipitation free zones and protective corrosion product film easily formed on the material contribute to the improved corrosion resistance of Al-Mg-Si-Sn-Sc *** results provide important insight into the development of high-performance Al alloys.

关键词： AlMgSiSn alloys Sc microalloying Aging regime Property Micromechanisms

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Ameliorating Effects of TRIM67 on Ileum Inflammation and Barrier Function in Obese Mice Induced by High Fat Diet

Ameliorating Effects of TRIM67 on Ileum Inflammation and Bar...

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作者： asad Jahangir 四川农业大学

学位级别：硕士

消化系统是宿主与其环境之间最大的屏障,它拥有一个完整的屏障框架,以保护宿主免受外部毒物,膳食抗原,微生物和其他可能有害的物质的侵害。这种保护是多种多样的,涉及不同的防御机制,例如粘膜层,不断代谢的上皮细胞和紧密连接(TJs)。如... 详细信息

消化系统是宿主与其环境之间最大的屏障,它拥有一个完整的屏障框架,以保护宿主免受外部毒物,膳食抗原,微生物和其他可能有害的物质的侵害。这种保护是多种多样的,涉及不同的防御机制,例如粘膜层,不断代谢的上皮细胞和紧密连接(TJs)。如今,由于长期高脂肪饮食(HFD)引起的肥胖和肥胖相关的代谢疾病是世界上的重大问题。动物研究的证据表明,HFD诱导肠道生态失调,炎症反应,氧化应激和增加肠道通透性。肠道屏障系统调节宿主防御机制以保护宿主免受外部毒物的侵害,但HFD通过刺激促炎信号级联直接增加肠道通透性,并间接通过激活屏障破坏细胞因子增加肠道通透性。TRIM67基因是TRIM家族蛋白质的成员,TRIM家族蛋白参与细胞周期停滞、细胞凋亡、DNA修复和衰老等重要的细胞过程。据我们所知,没有研究阐明TRIM67在HFD诱导肥胖小鼠回肠中的保护作用。本研究的目的是揭示TRIM67对肥胖诱导小鼠回肠炎症、氧化应激和屏障功能的改善作用。在本研究中通过在野生型(WT)和敲除(KO)小鼠中使用HFD饮食14周成功构建肥胖模型。通过使用包括H&E,PAS和Masson染色来观察回肠的组织形态学变化。通过荧光定量PCR(q PCR)和蛋白质免疫印迹检查TRIM67基因缺失对肥胖小鼠肠道炎症,抗氧化酶活性和肠道屏障功能的影响。主要实验结果如下。1.高脂肪饮食对TRIM67表达的影响及肥胖模型构建成功HFD喂养14周后,与对照(CTR)饮食喂养的小鼠相比,用HFD喂养的小鼠体重显着增加。HFD增加了WT和KO小鼠的血糖水平,而对照饮食喂养的KO小鼠的血糖水平没有增加,并且表明TRIM67对血糖没有显着影响。此外,与WT CTR饮食小鼠相比,用HFD喂养的WT小鼠中的TRIM67表达下调。***67缺失诱导肥胖小鼠回肠组织病理学损伤组织病理学观察表明,KO小鼠和HFD喂养小鼠表现出病理损伤,包括绒毛的缩短和变钝以及隐窝深度的减少。而且,用HFD喂养的KO小鼠的杯状细胞数量减少和轻度纤维化。***67的缺失加剧肥胖诱导回肠中的炎症反应TRIM67缺失加剧肥胖诱导小鼠回肠中的肠炎症反应。包括TNF-α,IL-6,IL-1β和IL-2在内的炎性细胞因子的分析表明,与WT CTR组相比,KO CTR组中这些细胞因子的m RNA表达高。此外,与CTR组相比,HFD组(WT和KO)的m RNA表达量高。与WT HFD小鼠相比,KO HFD小鼠的IL-1β和IL-2m RNA表达上调。Western印迹(WB)结果显示KO HFD小鼠中TNF-α,IL-6和IL-1的蛋白表达量增加;与CTR组相比,HFD组小鼠抗炎细胞因子(IL-4和IL10)的m RNA表达受到抑制,IL-10和IL-4的蛋白表达水平表明,与所有其他组相比,KO HFD组的表达最低。***67缺失加剧肥胖小鼠回肠的屏障破坏本研究发现,用HFD喂养的WT和KO小鼠中claudin-1,occludin和ZO-1的m RNA表达下调,但KO CTR和KO HFD小鼠之间occludin的m RNA表达没有显着差异。此外,与WT CTR组相比,KO CTR饮食组中紧密连接蛋白的表达下调。WB结果表明,KO HFD组的相对蛋白表达水平比实验的所有其他组都受到抑制。***67缺失加剧肥胖小鼠回肠中的氧化应激与CTR组相比,HFD组中抗氧化酶SOD-1和SOD-2的m RNA表达降低。此外,HFD组中用试剂盒检测的SOD活力和GSH含量都显著下调,WT CTR组和KO CTR组的SOD活力没有显着差异,而KO CTR组的GSH含量与WT CTR组相比显著下降。总之,我们的数据提供了关于TRIM67在肥胖小鼠回肠中的保护作用的重要见解。我们证明TRIM67可以防止肠道炎症,保持肠道完整性,并减少HFD喂养引起的氧化应激。此外,需要更多的分析和临床试验来阐明TRIM67作为保护标志物的机制,因为近年来肥胖和肥胖相关的代谢疾病逐渐增加,TRIM67可能是有价值的治疗靶标。

关键词：高脂肪饮食 TRIM67 回肠炎症紧密连接氧化应激

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End-to-End 2D Convolutional Neural Network Architecture for Lung Nodule Identification and Abnormal Detection in Cloud

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Computers, Materials & Continua 2023年第4期75卷 461-475页

作者： Safdar Ali Saad asad Zeeshan Asghar Atif Ali Dohyeun Kim Department of Software Engineering the University of LahoreDefence Road CampusLahore55150Pakistan Department of Computer Engineering Jeju National UniversityAra CampusJeju City63243Korea

The extent of the peril associated with cancer can be perceivedfrom the lack of treatment, ineffective early diagnosis techniques, and mostimportantly its fatality rate. Globally, cancer is the second leading cause ofdeath and among over a hundred types of cancer;lung cancer is the secondmost common type of cancer as well as the leading cause of cancer-relateddeaths. Anyhow, an accurate lung cancer diagnosis in a timely manner canelevate the likelihood of survival by a noticeable margin and medical imagingis a prevalent manner of cancer diagnosis since it is easily accessible to peoplearound the globe. Nonetheless, this is not eminently efficacious consideringhuman inspection of medical images can yield a high false positive rate. Ineffectiveand inefficient diagnosis is a crucial reason for such a high mortalityrate for this malady. However, the conspicuous advancements in deep learningand artificial intelligence have stimulated the development of exceedinglyprecise diagnosis systems. The development and performance of these systemsrely prominently on the data that is used to train these systems. A standardproblem witnessed in publicly available medical image datasets is the severeimbalance of data between different classes. This grave imbalance of data canmake a deep learning model biased towards the dominant class and unableto generalize. This study aims to present an end-to-end convolutional neuralnetwork that can accurately differentiate lung nodules from non-nodules andreduce the false positive rate to a bare minimum. To tackle the problem ofdata imbalance, we oversampled the data by transforming available images inthe minority class. The average false positive rate in the proposed method isa mere 1.5 percent. However, the average false negative rate is 31.76 *** proposed neural network has 68.66 percent sensitivity and 98.42 percentspecificity.

关键词： Convolutional neural networks medical image processing lung nodule identification data imbalance deep learning

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Tree ring derived summer temperature variability over the past millennium in the western Himalayas of northern Pakistan

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Frontiers of Earth Science 2023年第4期17卷 1026-1036页

作者： Fayaz asad Haifeng ZHU Tabassum YASEEN Ru HUANG Mukund Palat RAO Department of Botany Bacha Khan University CharsaddaKhyber Dakhtun Khaw 24420Pakistan State Key Laboratory of Tibetan Plateau Earth System Resources and Environment(TPESRE)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China China Pakistan Joint Research Center on Earth Sciences CAS-HECIslamabad 45320Pakistan Centre de Recerca Ecològica i Aplicacions Forestals Barcelona 08193Spain Department of Plant Science University of California Davis(UC Davis)95616CaliforniaUSA Tree Ring Laboratory Lamont-Doherty Earth ObservatoryColumbia UniversityNY 10964USA

Long-term high resolution climate proxies are essential for understanding climate variability particularly,in regions such as the western Himalayas of northern Pakistan,where few long-term climate records are *** standard dendrochronological methods,an 1132-year(882 to 2013 C.E.)tree-ring chronology of Juniperus excelsa *** was established from the western Himalayas,northern Pakistan(WHNP).Tree growth was negatively and significantly(r=-0.65)correlated with the growing season(June-July)mean temperature,and positively and weakly(r=0.22)associated with *** inverse relationship of tree radial growth with temperature and positive association with precipitation demonstrated that forest growth is sensitive to high temperature related *** a reliable STD chronology and robust reconstruction model,a 928-year(1086 to 2013 C.E.)mean temperature reconstruction was developed for the WHNP using the substantial negative correlation between the summer temperature and standard tree ring-width *** to statistical validation,the reconstruction accounted for 41.6% of the climatic variation for the period of 1956-2013 *** *** extreme-warm periods occurred in 1093 C.E.(29.42℃)and extreme cold periods in 1088 C.E.(26.99℃)observed during the past 928 *** reconstruction's multi-taper method(MTM)spectral analysis reveals significant(p<0.05)2-3-year and 63.8-year *** the 2-3-year cycle occurred within the range of ENSO variation,which indicates that ENSO had an impact on the regional temperature in our studied area.

关键词： tree rings Juniperus excelsa dendrochronology reconstruction western Himalaya

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