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Energy Geoscience 2024年第4期5卷 224-239页

作者： amin Izadpanahi Reza Azin Shahriar osfouri Reza Malakooti Escola Politécnica Universidade de São PauloBrazil Department of Petroleum Engineering Faculty of Petroleum Gas&Petrochemical EngineeringPersian Gulf UniversityBushehrIran Department of Chemical Engineering Faculty of Petroleum Gas&Petrochemical EngineeringPersian Gulf UniversityBushehrIran Computer Modelling Group LondonUK

The Gas-oil Ratio(GoR)is a crucial production parameter in oil *** increase in GoR results in higher gas production and lower oil production,potentially leading to well shut-ins due to economic *** study focuses on a real fractured oil field that requires urgent production operations to reduce the producing *** this study,the static model for the field was developed using commercial software,involving steps such as data collection,fault modeling,meshing,and statistical analysis to prepare for dynamic *** dynamic model incorporates geometry,gridding,and rock properties from the static model,utilizing a dual-porosity approach for the naturally fractured reservoir and the Peng-Robinson equation for fluid phase *** reservoir conditions,production history,and rock-fluid interactions were defined,with relative permeability curves indicating a water-wet reservoir and low critical gas saturation affecting the *** better understand the relationship between reservoir and production parameters,a detailed sensitivity analysis was performed using the Response Surface Methodology(RSM).Following the sensitivity analysis,a history matching process was conducted using the Designed Exploration and Controlled Evolution(DECE)optimizer to validate the model for future *** operational scenarios were defined to decrease the production GoR and enhance final recovery from the *** results indicate that the water injection scenario is effective in preventing the GoR increase by maintaining reservoir pressure,thereby sustaining production over a longer *** scenario also improves oil recovery by approximately 6%compared to the base ***,optimization was carried out using the DECE optimizer for each scenario to fine-tune the operational *** goal was to maximize oil revenue for each scenario during the optimization *** study stands out as one of the few that provides a comprehensive analysis

关键词： Reservoir simulation Sensitivity analysis Response surface methodology High gas-oil ratio Production optimization

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Investigation on Degradation Path of SF_(6)in Packed-bed Plasma:Effect of Plasma-generated Radicals

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1231-1241页

作者： Zhaolun Cui Chang Zhou amin Jafarzadeh Xiaoxing Zhang Peng Gao Licheng Li Yanpeng Hao School of Electric Power Engineering South China University of TechnologyGuangzhou 510630China School of Electrical and Electronic Engineering Hubei University of TechnologyWuhan 430068China Research group PLASMANT Department of ChemistryUniversity of AntwerpUniversiteitsplein 1BE-2610 Wilrijk-AntwerpBelgium CSEE

SF_(6)degradation mechanism in non-thermal plasma(NTP)systems is not fully understood due to the formation of a complex physico-chemical reaction network,especially when reactive gases and packing materials are *** this work,we conduct a combined experimental and theoretical study to unravel the SF_(6)degradation path in a-Al_(2)o_(3)packed plasma in the presence of H_(2)o or o_(2).our experimental results show that both H_(2)o and o_(2)have a synergetic effect with-Al_(2)o_(3)packing on promoting SF_(6)degradation,leading to higher stable gas yields than typical spark or corona discharges.H_(2)o or o_(2)addition promotes So_(2)or So_(2)F_(2)selectivity,*** functional theory(DFT)calculations reveal that So_(2)generation corresponding with the highest activation barrier is the most critical step toward SF_(6)*** like H and o generated from H_(2)o or o_(2)discharge can significantly promote the degradation process via Eley-Rideal mechanism,affecting key reactions of stable product generation,advancing degradation *** results of this work could provide insights on further understanding SF_(6)degradation mechanism especially in packed-bed plasma systems.

关键词： Degradation mechanism packed-bed plasma radicals SF_(6)

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Network Security Enhanced with Deep Neural Network-Based Intrusion Detection System

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Computers, Materials & Continua 2024年第7期80卷 1457-1490页

作者： Fatma S.Alrayes Mohammed Zakariah Syed Umar amin Zafar Iqbal Khan Jehad Saad Alqurni Information Systems Department College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityRiyadh11671Saudi Arabia College of Computer and Information Sciences King Saud UniversityRiyadh11362Saudi Arabia College of Computer and Information Sciences Prince Sultan UniversityRiyadh11586Saudi Arabia Department of Educational Technologies College of EducationImam Abdulrahman Bin Faisal UniversityP.O.Box 1982Dammam31441Saudi Arabia

This study describes improving network security by implementing and assessing an intrusion detection system(IDS)based on deep neural networks(DNNs).The paper investigates contemporary technical ways for enhancing intrusion detection performance,given the vital relevance of safeguarding computer networks against harmful *** DNN-based IDS is trained and validated by the model using the NSL-KDD dataset,a popular benchmark for IDS *** model performs well in both the training and validation stages,with 91.30%training accuracy and 94.38%validation ***,the model shows good learning and generalization capabilities with minor losses of 0.22 in training and 0.1553 in ***,for both macro and micro averages across class 0(normal)and class 1(anomalous)data,the study evaluates the model using a variety of assessment measures,such as accuracy scores,precision,recall,and F1 *** macro-average recall is 0.9422,the macro-average precision is 0.9482,and the accuracy scores are ***,macro-averaged F1 scores of 0.9245 for class 1 and 0.9434 for class 0 demonstrate the model’s ability to precisely identify anomalies *** research also highlights how real-time threat monitoring and enhanced resistance against new online attacks may be achieved byDNN-based intrusion detection systems,which can significantly improve network *** study underscores the critical function ofDNN-based IDS in contemporary cybersecurity procedures by setting the foundation for further developments in this *** research aims to enhance intrusion detection systems by examining cooperative learning techniques and integrating up-to-date threat knowledge.

关键词： Machine-Learning Deep-Learning intrusion detection system security privacy deep neural network NSL-KDD Dataset

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CNN Channel Attention Intrusion Detection SystemUsing NSL-KDD Dataset

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Computers, Materials & Continua 2024年第6期79卷 4319-4347页

Intrusion detection systems(IDS)are essential in the field of cybersecurity because they protect networks from a wide range of online *** goal of this research is to meet the urgent need for small-footprint,highly-adaptable Network Intrusion Detection Systems(NIDS)that can identify *** NSL-KDD dataset is used in the study;it is a sizable collection comprising 43 variables with the label’s“attack”and“level.”It proposes a novel approach to intrusion detection based on the combination of channel attention and convolutional neural networks(CNN).Furthermore,this dataset makes it easier to conduct a thorough assessment of the suggested intrusion detection ***,maintaining operating efficiency while improving detection accuracy is the primary goal of this ***,typical NIDS examines both risky and typical behavior using a variety of *** the NSL-KDD dataset,our CNN-based approach achieves an astounding 99.728%accuracy rate when paired with channel *** to previous approaches such as ensemble learning,CNN,RBM(Boltzmann machine),ANN,hybrid auto-encoders with CNN,MCNN,and ANN,and adaptive algorithms,our solution significantly improves intrusion detection ***,the results highlight the effectiveness of our suggested method in improving intrusion detection precision,signifying a noteworthy advancement in this *** efforts will focus on strengthening and expanding our approach in order to counteract growing cyberthreats and adjust to changing network circumstances.

关键词： Intrusion detection system(IDS) NSL-KDD dataset deep-learning machine-learning CNN channel Attention network security

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共价有机框架基光催化剂合成过氧化氢和高价值化学品的最新进展

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Chinese Journal of Catalysis 2024年第6期61卷 97-110页

作者：刘高雄陈润东夏兵全吴珍刘善堂 amin Talebian-Kiakalaieh 冉景润武汉工程大学化学与环境工程学院绿色化工过程教育部重点实验室湖北武汉430074 鄂尔多斯应用技术学院化学工程学系内蒙古鄂尔多斯017000 阿德莱德大学化学工程学院阿德莱德澳大利亚

过氧化氢(H_(2)o_(2))广泛用于废水处理、燃料电池及漂白剂等领域.尽管传统生产H_(2)o_(2)的蒽醌法拥有成熟的技术基础,但存在能耗高、爆炸风险、毒气排放以及环境污染等问题.太阳能驱动的光催化合成H_(2)o_(2)作为一种绿色、无污染、... 详细信息

过氧化氢(H_(2)o_(2))广泛用于废水处理、燃料电池及漂白剂等领域.尽管传统生产H_(2)o_(2)的蒽醌法拥有成熟的技术基础,但存在能耗高、爆炸风险、毒气排放以及环境污染等问题.太阳能驱动的光催化合成H_(2)o_(2)作为一种绿色、无污染、可持续的能源转换技术,展现出替代传统的蒽醌工艺的巨大潜力.共价有机框架(CoFs)作为光催化合成H_(2)o_(2)的新兴催化剂,以可调节的能带结构、宽光吸收范围及高光催化效率在克服传统无机光催化剂低转化效率方面显示出优势.通过合理的结构设计调整氧还原反应(oRR)途径,CoFs可提升光催化合成H_(2)o_(2)的产率,并可同时促进高附加值化学品的合成.本文综述了基于CoFs的光催化剂在H_(2)o_(2)合成及选择性氧化高价值化学品领域的最新研究进展.首先,详细讨论了CoFs基光催化剂在合成H_(2)o_(2)过程中的三种主要途径:(1)单步两电子氧还原反应;(2)两步单电子氧还原反应;(3)双通道反应机制.同时,强调了牺牲剂对光催化合成H_(2)o_(2)和高附加值化学品的影响.其次,总结了多种新颖的CoF基光催化剂合成策略,包括静电自组装、原位合成、蒸汽辅助工艺、孔隙划分和界面聚合等,这些策略在光催化生产H_(2)o_(2)及高价值化学品方面发挥了关键作用.接下来,深入探讨了提升CoFs在H_(2)o_(2)和高价值化学品生成效率方面的策略,主要包括单原子生长、异质结构建、活性位点调节和催化环境控制等四种修饰策略.这些策略涉及材料的贵金属改性、材料相互作用促进、官能团设计以及反应界面的亲疏水性质,旨在从整体上推动CoFs在光催化的可持续性和增值化学合成方向的研究与创新.最后,提出了CoFs基光催化剂面临的挑战与当前进展.其中,CoFs的薄膜制备和多相体系构建对于解决催化剂的分离与回收问题至关重要.同时,强调了机理表征在提升CoF基光催化剂整体性能中的重要性.综上,CoFs基光催化剂在合成设计、反应途径的调控以及牺牲剂的引入等方面都会对合成H_(2)o_(2)和高值化学品产生重要影响.本文旨在为构建CoF基光催化剂提升整体光催化性能提供一定的参考和借鉴.

关键词：共价有机框架光催化过氧化氢合成高价值化学品设计策略

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Regulating microstructure and composition by carbonizing in-situ grown metal-organic frameworks on cotton fabrics for boosting electromagnetic wave absorption

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Nano Research 2024年第8期17卷 7290-7300页

作者： Jie Jin Hongsen Long Hu Liu Yan Guo Tiantian Bai Ben Bin Xu Mohammed A.amin Hua Qiu Mohamed H.Helal Chuntai Liu Changyu Shen Zeinhom M.El-Bahy Zhanhu Guo State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410000China School of Electronic Engineering North China University of Water Resources and Electric PowerZhengzhou 450046China Complex Conditions of High-end Tire Technology Innovation Center Shuguang Rubber Industry Research&Design Institute Co.LtdGuilin 541004China Integrated Composites Lab Department of Mechanical and Civil EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Chemistry Faculty of Arts and ScienceNorthern Border UniversityRafha 73213Saudi Arabia Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt

High-temperature carbonized metal-organic frameworks(MoFs)derivatives have demonstrated their superiority for promising electromagnetic wave(EMW)absorbers,but they still suffer from limited EMW absorption capacity and narrow *** the advantage of microstructure and chemical composition regulation for the design of EMW absorber,hierarchical heterostructured MoS_(2)/CoS_(2)-Co_(3)o_(4)@cabonized cotton fabric(CF)(MCC@CCF)is prepared by growing ZIF-67 MoFs onto CF surface,chemical etching,and *** from the dual loss mechanism of magnetic-dielectric multicomponent carbonized MoFs,chemical etching and carbonization process can effectively introduce abundant micro-gap structure that can result in better impedance matching and stronger absorption capacity via internal reflection,doped heteroatoms(Mo,N,S)to supply additional dipolar polarization loss,and numerous heterointerfaces among MoS_(2),CoS_(2),Co_(3)o_(4),and CCF that produce promoted conduction loss and interfacial polarization ***,a minimal reflection loss of−52.87 dB and a broadest effective absorption bandwidth of 6.88 GHz were achieved via tunning the sample thickness and filler loading,showing excellent EMW absorption *** research is of great value for guiding the research on MoFs derivatives based EMW absorbing materials.

关键词： metal-organic frameworks hierarchical structure chemical etching sulfurization electromagnetic wave absorption

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Self-repairing Al_(2)o_(3)-Tio_(2)coatings fabricated through plasma electrolytic oxidation with various cathodic pulse parameters

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Transactions of Nonferrous Metals Society of China 2024年第10期34卷 3326-3343页

作者： Mehri HASHEMZADEH Keyvan RAEISSI Fakhreddin ASHRAFIZADEH Frank SIMCHEN amin HAKIMIZAD Monica SANTAMARIA Thomas LAMPKE Department of Materials Engineering Isfahan University of TechnologyIsfahan 84156-83111Iran Materials and Surface Engineering Group Institute of Materials Science and EngineeringChemnitz University of TechnologyChemnitz 09107Germany Yekta Mobaddel Pars Co. Science and Technology CampusYazd UniversityYazd 89158-18411Iran Dipartimento di Ingegneria Universitàdi PalermoViale Delle ScienzeEd.690128PalermoItaly

The influence of cathodic pulse parameters was evaluated on plasma electrolytic oxidation(PEo)coatings grown on 7075 aluminum alloy in a silicate-based electrolyte containing potassium titanyl oxalate(PTo)using pulsed bipolar waveforms with various cathodic duty cycles and cathodic current *** coatings were characterized by SEM,EDS,and *** was applied to investigate the electrochemical *** was observed that the increase of cathodic duty cycle and cathodic current density from 20%and 6 A/dm^(2) to 40%and 12 A/dm^(2) enhances the growth rate of the inner layer from 0.22 to 0.75μm/*** PTo into the bath showed a fortifying effect on influence of the cathodic pulse and the mentioned change of cathodic pulse parameters,resulting in an increase of the inner layer growth rate from 0.25 to 1.10μm/*** on EDS analysis,Si and Ti were incorporated dominantly in the upper parts of the *** technique merely detectedγ-Al_(2)o_(3),and there were no detectable peaks related to Ti and Si ***,the EIS results confirmed that the incorporation of Ti^(4+)into alumina changed the electronic properties of the *** coatings obtained from the bath containing PTo using the bipolar waveforms with a cathodic duty cycle of 40%and current density values higher than 6 A/dm^(2) showed highly appropriate electrochemical behavior during 240 d of immersion due to an efficient repairing *** the effects of studied parameters on the coating properties,the roles of cathodic pulse parameters and PTo in the PEo process were highlighted.

关键词： Al2o3−Tio2 coating plasma electrolytic oxidation potassium titanyl oxalate electrochemical impedance spectroscopy

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Constituents from leaves of Macaranga hemsleyana

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Chinese Herbal Medicines 2024年第3期16卷 481-486页

作者： Joseph Sakah Kaunda Jia Liu Yaojun Xu Yuansi Chen Chenfang Yue Xingjie Zhang Ruihan Zhang Muhammad amin Weilie Xiao Hongliang Li Xiaoli Li Key Laboratory of Medicinal Chemistry for Natural Resource Ministry of EducationYunnan Characteristic Plant Extraction LaboratoryYunnan Provincial Center for Research&Development of Natural ProductsState Key Laboratory for Conservation and Utilization of Bio-Resources in YunnanSchool of PharmacySchool of MedicineChemical Science and TechnologyYunnan UniversityKunming 650500China Yunnan Key Laboratory of Pharmacology for Natural Products Haiyuan CollegeKunming Medical UniversityKunming 650500China

objective:To study constituents of the leaves of Macaranga hemsleyana,and evaluate their inhibitory effects against NoD-like receptor thermal protein domain associated protein 3(NLRP3)inflammasome activation,and antiproliferative ***:The constituents were isolated and purified by column chromatography on MCI gel CHP20P/P120,silica gel,Sephadex LH-20,and *** structures of compounds were determined by 1D,2D NMR,and HR-ESI-MS *** inhibitory effect of compounds on inflammasome activation was determined by lactate dehydrogenase(LDH)*** antiproliferative activity was evaluated using MTT ***:The study led to the isolation of 23 compounds,including one new compound,identified as(2Z)-3-[4-(β-D-glucopyranosyloxy)-2′-hydroxy-5′-methoxyphenyl]-2-propenoic acid(1),together with 22 known compounds recognized as 1,4-dihydro-4-oxo-3-pyridinecarbonitrile(2),methyl 4-methoxynicotinate(3),4-methoxynicotinonitrile(4),1-(3-o-β-D-glucopyranosyl-4,5-dihydroxyphenyl)-ethanone(5),neoisoastilbin(6),isoastilbin(7),aromadendrin(8),neoastilbin(9),astilbin(10),quercitrin(11),neoschaftoside(12),apigenin 6,8-bis-C-α-L-arabinoside(13),vitexin(14),bergenin(15),scopoletin(16),glucopyranoside salicyl(17),koaburside(18),benzylβ-D-glucoside(19),icariside B5(20),roseoside(21),loliolide(22),and adenosine(23).The tested compounds did not show LDH inhibition nor antiproliferative ***:Compound 1 was a new *** 2 and 3 were obtained for the first time from natural *** 22 known compounds constituted of alkaloids(2–4,23),phenolics(5,15,17,18),flavonoids(6–14),coumarin(16),benzyl glycoside(19),and norsesquiterpenes(20–22).All the compounds,1–23,were revealed from *** for the first *** is the initial uncovering of molecules 1–10,12,13,17–19,and 23 from the genus *** isolated compounds,11,14–16,and 20–22 established taxonomic classification of *** in Euphorbiaceae *** were outstanding as

关键词： antiproliferative activity chemotaxonomic significance flavonoids glycoside Macaranga hemsleyana Pax et Hoffm NLRP3 inflammasome

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Intermittent swelling and shrinkage of a highly expansive soil treated with polyacrylamide

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Journal of Rock Mechanics and Geotechnical Engineering 2022年第1期14卷 252-261页

作者： amin Soltani An Deng Abbas Taheri Brendan C.o’Kelly School of Engineering Information Technology and Physical SciencesFederation UniversityChurchillVIC3842Australia School of Civil Environmental and Mining EngineeringThe University of AdelaideAdelaideSA5005Australia Department of Civil Structural and Environmental EngineeringTrinity College DublinDublinD02 PN40Ireland

This laboratory study examines the potential use of an anionic polyacrylamide(PAM)-based material as an environmentally sustainable additive for the stabilization of an expansive soil from South *** experimental program consisted of consistency limits,sediment volume,compaction and oedometer cyclic swell-shrink tests,performed using distilled water and four different PAM-to-water solutions of P_(D)=0.1 g/L,0.2 g/L,0.4 g/L and 0.6 g/L as the mixing ***,the relative swelling and shrinkage strains were found to decrease with increasing number of applied swell-shrink cycles,with an‘elastic equilibrium’condition achieved on the conclusion of four *** propensity for swelling/shrinkage potential reduction(for any given cycle)was found to be in favor of increasing the PAM dosage up to P_(D)=0.2 g/L,beyond which the excess PAM molecules self-associate as aggregates,thereby functioning as a lubricant instead of a flocculant;this critical dosage was termed‘maximum flocculation dosage’(MFD).The MFD assertion was discussed and validated using the consistency limits and sediment volume properties,both exhibiting only marginal variations beyond the identified MFD of P_(D)=0.2 g/*** accumulated axial strain progressively transitioned from‘expansive’for the unamended soil to an ideal‘neutral’state at the MFD,while higher dosages demonstrated undesirable‘contractive’states.

关键词： Expansive soil Polyacrylamide(PAM) Consistency limits Sediment volume Swell-shrink cycles Swelling and shrinkage strains Accumulated axial strain

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A Comparative Study of Fungal and Some Aflatoxin Contents of Freshly Fried and Stored <i>Sallah</i>Meat from Danbatta Local Government Area of Kano State, Nigeria

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open Journal of Medical Microbiology 2020年第2期10卷 71-88页

作者： Fatima S. Abdullahi amin o. igwegbe Bello A. Bello Mamudu H. Badau Sani Abashe Imaan U. igwegbe Zainab Ali Department of Food Science and Technology Federal University Dutsin-ma Dutsin-ma Nigeria Department of Food Science and Technology University of Maiduguri Maiduguri Nigeria Department of Biochemistry Federal University Dutse Dutse Nigeria Department of Medical Microbiology University of Maiduguri Teaching Hospital (UMTH) Miaduguri Nigeria Department of Animal of Science University of Maiduguri Maiduguri Nigeria

A comparative study of Fungi (yeast and moulds) and their toxic metabolites was carried out on offal and muscles of freshly fried and stored Sallah meats from rams, bulls, goats and camels slaughtered for sacrifice in Danbatta Local Government Area, Kano State, Nigeria. The objective was to determine the effects of frying and four weeks storage at ambient temperatures on the mycological loads of the fried and stored meats. A total of seventy two (72) samples of muscles and offal were collected from six different and randomly selected households that slaughtered and fried any of the four animals during that period. The samples were analyzed immediately as freshly fried, and then stored for a period of four weeks during which analyses were conducted at the second and fourth weeks. An analysis of variance (ANOVA) was used to compare between the fungal loads and the toxin contents in the stored meat. Results revealed the presence of Mucor, Rhizopus stolonifer, Aspergillus niger, Saccharomycetes, Penicilium spp and Aspergillus flavus;and that, Aspergillus flavus ont-family:Verdana;">and

关键词： Danbatta Sallah Meat Aflatoxin Metabolites Fried Meat

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