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Burial and thermal maturity modeling of the Middle Cretaceous-Early Miocene petroleum system,Iranian sector of the Persian Gulf

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Petroleum Science 2015年第3期12卷 367-390页

作者： Zahra Sadat Mashhadi ahmad Reza Rabbani mohammad Reza Kamali Maryam Mirshahani ahmad Khajehzadeh Petroleum Engineering Department Amirkabir University of Technology Research Institute of Petroleum Industry (RIPI)

The Cretaceous Kazhdumi and Gurpi forma- tions, ahmadi Member of the Sarvak Formation, and Paleogene Pabdeh Formation are important source rock candidates of the Middle Cretaceous-Early Miocene pet- roleum system in the Persian Gulf. This study characterizes generation potential, type of organic matter, and thermal maturity of 262 cutting samples （marls and argillaceous limestones） from these rock units taken from 16 fields in the Iranian sector of the Persian Gulf. In addition, the burial and thermal histories of these source rocks were analyzed by one-dimensional basin modeling. Based on the total organic carbon and genetic potential values, fair hydro- carbon generation potential is suggested for the studied samples. Based on Tma~ and vitrinite reflectance values, the studied samples are thermally immature to mature for hydrocarbon generation. The generated models indicate that studied source rocks are immature in central wells. The Gurpi and Pabdeh formations are immature and the ahmadi Member and Kazhdumi Formation are early mature in the western wells. The Pabdeh Formation is within the main oil window and other source rocks are at the late oil window in the eastern wells. The hydrocarbon expulsion from the source rocks began after deposition of related caprocks which ensures entrapment and preserva- tion of migrated hydrocarbon.

关键词： Persian Gulf. Kazhdumi Formation ahmadiMember Gurpi Formation Pabdeh Formation - MiddleCretaceous-Early Miocene petroleum system

Performance Analysis of DEBT Routing Protocols for Pocket Switch Networks

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Computers, Materials & Continua 2021年第3期66卷 3075-3087页

作者： Khairol Amali bin ahmad mohammad Nazmul Hasan Md.Sharif Hossen Khaleel ahmad Department of Electrical&Electronics Engineering National Defence University of MalaysiaMalaysia Department of Information and Communication Technology Comilla UniversityCumillaBangladesh Department of Computer Science&Information Technology Maulana Azad National Urdu UniversityIndia

Pocket Switched Networks(PSN)represent a particular remittent network for direct communication between the handheld mobile *** to traditional networks,there is no stable topology structure for PSN where the nodes observe the mobility model of human *** is a kind of Delay Tolerant Networks(DTNs)that gives a description to circulate information among the network nodes by the way of taking the benefit of transferring nodes from one area to *** its inception,there are several schemes for message routing in the infrastructure-less environment in which human mobility is only the best manner to exchange *** routing messages,PSN uses different techniques such asDistributed Expectation-Based Spatio-Temporal(DEBT)Epidemic(DEBTE),DEBT Cluster(DEBTC),and DEBT Tree(DEBTT).Understanding on how the network environment is affected for these routing strategies are the main motivation of this *** this paper,we have investigated the impact of network nodes,the message copies per transmission,and the overall carrying out of these routing *** simulator was used to analyze those techniques on the basis of delivery,overhead,and *** result of this task demonstrates that for a particular simulation setting,DEBTE is the best PSN routing technique among all,against DEBTC and DEBTT.

关键词： Pocket switched networks routings distributed cluster detections delay tolerant networks mobility in network

A predictor-corrector scheme for solving nonlinear fractional differential equations with uniform and nonuniform meshes

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International Journal of Modeling, Simulation, and Scientific Computing 2019年第5期10卷 108-142页

作者： mohammad Javidi Mahdi Saedshoar Heris Bashir ahmad Faculty of Mathematical Sciences University of Tabriz TabrizIran Nonlinear Analysis and Applied Mathematics Research Group(NAAM)King Abdulaziz University P.O.Box 80203 Jeddah 21589Saudi Arabia

In this paper,we develop two algorithms for solving linear and nonlinear fractional differential equations involving Caputo *** designing new predictor–corrector(PC)schemes,we select the mesh points based on the two equal-height and equal-area ***,the error bounds of PC schemes with uniform and equidistributing meshes are ***,examples are constructed for illustrating the obtained PC schemes with uniform and equidistributing meshes.A comparative study is also presented.

关键词： meshes fractional uniform

Lead isotope signatures of Pb-Zn sulfide mineralization in the Reshian-Lamnian area of Azad Jammu and Kashmir,Pakistan

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Chinese Journal Of Geochemistry 2010年第1期29卷 65-74页

作者： mohammad Tahir Shah Tazeem Khan ahmad Khan National Centre of Excellence in Geology University of Peshawar Department of Earth Sciences University of Sargodha

The Reshian-Lamnian area within the Hazara-Kashmir syntaxis in Pakistan is composed mainly of the rocks of the Salkhala,Panjal and Murree *** metal sulfide mineralization in the form of sphalerite and galena with lesser amounts of chalcopyrite and pyrite is present within the Salkhala Formation of the study *** all these ore phases are homogeneous in *** Pb isotopic composition of galena from the area suggests that there is very little or negligible variation in the ratios of 206Pb/204Pb,207Pb/204Pb and 208Pb/*** ages ranging from 509 to 562 Ma and the μ values of 10.71 to 10.93 have been calculated for the studied Pb-Zn *** the basis of field features,mineralogy and Pb-isotope signatures,it is concluded that the Pb-Zn sulfide mineralization in the Reshian-Lamnia area is pre-Himalayan in age and can be correlated with the Cambro-Ordovician(Pan-African) orogenic event.

关键词：铅同位素组成铅锌硫化矿克什米尔巴基斯坦签名边境地区化学成分喜马拉雅

New mathematical modelings of the human liver and hearing loss systems with fractional derivatives

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International Journal of Biomathematics 2023年第1期16卷 183-207页

作者： Mir Sajjad Hashemi mohammad Partohaghighi Hijaz ahmad Department of Mathematics Basic Science Faculty University of BonabP.O.Boc 55513-95133 BonabIran Department of Mathematics Clarkson University PotsdamNY13699USA Department of Basic Sciences University of Engineering and Technology Peshawar 25000 Pakistan Section of Mathematics International Telematic University Uninettuno Corso Vittorio Emanuele I 39Roma 00186Italy

Fractional derivatives are significant mathematical instruments that have been practiced to model real phenomena in different areas of *** the current investigation study,we develop the Human Liver and Hearing Loss models by employing three fractional operators called Atangana-Baleanu-Caputo,Caputo and Caputo-Fabrizio *** numerical techniques regarding the basic theories of fractional analysis considered to obtain the approximate solutions of the offered ***,approximate results are presented for showing the efficacy of the methods during graphs of *** see the performance of the suggested models,different fractional orders are tested.

关键词： Numerical method fractional calculus fractional derivatives Human Liver model Hearing Loss model Lagrange interpolation.

Multifaceted Strategies Used by Root-Knot Nematodes to Parasitize Plants-A Review

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Phyton-International Journal of Experimental Botany 2020年第2期89卷 205-215页

作者： Adnan Shakeel Abrar ahmad Khan mohammad Haris Division of Environmental Botany Department of BotanyAligarh Muslim UniversityAligarh202002India

Root-knot nematodes being omnipresent in agricultural and horticultural soils are tallied among the most important economic pathogens around the *** successful parasitism,these nematodes use various strategies to control and manipulate the host plant’s cell *** strategies include the mole-cular mimicry of some host genes by some nematode secreted effector proteins,secretion of cell wall digesting enzymes and other effector proteins that are responsible for the suppression of defence by the host *** these secretions which are released through the stylet,contribute to the formation of specialized feeding sites or giant *** effector proteins interfere with the normal physiology,cytology and biochemistry of the host *** present review brings novel insights by summarizing some novel effectors that have been discovered recently like MgPDI,MiMIF,MiIDL1,MiISE6,Mg16820,*** also discusses some novel mechanisms through which these effector proteins target different pathways of host plants and thus facilitate nematode parasitism.

关键词： Effector proteins meloidogyne parasitism mimicry

Fischer-Tropsch synthesis over ruthenium-promoted Co/Al_2O_3 catalyst with different reduction procedures

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Journal of Natural Gas Chemistry 2010年第5期19卷 503-508页

作者： Ali Karimi Ali Nakhaei Pour Farshad Torabi Behnam Hatami ahmad Tavasoli mohammad Reza Alaei mohammad Irani Research Institute of Petroleum Industry (RIPI) Gas Research Division

The effect of reduction procedure on catalyst properties, activity and products selectivity of ruthenium-promoted Co/γ-Al2O3 catalyst in Fischer-Tropsch synthesis （FTS） was investigated. Catalyst samples were reduced with different reduction gas compositions and passivated before being characterized by TPR and XRD techniques. Different activity and product selectivity analyses were also performed. These results showed that the catalyst dispersion, particle size, and the degree of reduction changed with different reduction gas compositions, which were resulted from the water partial pressures in reduction process that give varying degrees of interaction with the support. It has been suggested that the FTS activity of cobalt catalyst was directly dependent on the catalyst reducibility. A reduction gas with a molar ratio of H2Prle = 1 was used to prevent the formation of Co-support compound during catalyst reduction.

关键词： Fischer-Tropsch synthesis cobalt reducibility activity C5+ selectivity

Comparison between Emergency Severity Index and Heart Failure Triage Scale in heart failure patients: A randomized clinical trial

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World Journal of Emergency Medicine 2019年第4期10卷 215-221页

作者： ahmad Pouyamehr Amir Mirhaghi mohammad Davood Sharifi Ali Eshraghi Nursing and Midwifery Care Research Center Mashhad University of Medical SciencesMashhadIran Department of Medical-Surgical Nursing School of Nursing and MidwiferyMashhad University of Medical SciencesMashhadIran Department of Emergency Medicine Faculty of MedicineMashhad University of Medical SciencesMashhadIran Department of Cardiology Faculty of MedicineMashhad University of Medical SciencesMashhadIran

BACKGROUND:It is not clear whether Emergency Severity Index(ESI)is valid to triage heart failure(HF)patients and if HF patients benefi t more from a customized triage scale or *** aim of study is to compare the effect of Heart Failure Triage Scale(HFTS)and ESI on mistriage among patients with HF who present to the emergency department(ED).METHODS:A randomized clinical trial was conducted from April to June *** patients with dyspnea were randomly assigned to HFTS or ESI *** level,used resources and time to electrocardiogram(ECG)were compared between both groups among HF patients who were admitted to coronary care unit(CCU),cardiac unit(CU)and discharged patients from the *** validity was examined using Kappa designating agreement on relevance(K*).Reliability of both scale was evaluated using inter-observer agreement(Kappa).RESULTS:Seventy-three and 74 HF patients were assigned to HFTS and ESI groups *** to ECG in HFTS group was signifi cantly shorter than that of ESI group(2.05 vs.16.82 minutes).Triage level between HFTS and ESI groups was signifi cantly different among patients admitted to CCU(1.0 vs.2.8),cardiac unit(2.26 vs.3.06)and discharged patients from the ED(3.53 vs.2.86).Used resources in HFTS group was significantly different among triage levels(H=25.89;df=3;P<0.001).CONCLUSION:HFTS is associated with less mistriage than ESI for triaging HF *** is recommended to make use of HFTS to triage HF patients in the ED.

关键词： Dyspnea Heart failure Triage Emergency severity index

Performance comparison of machine learning algorithms for maximum displacement prediction in soldier pile wall excavation

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Underground Space 2024年第3期16卷 301-313页

作者： Danial Sheini Dashtgoli mohammad Hossein Dehnad Seyed ahmad Mobinipour Michela Giustiniani Department of Mathematics Informaticsand GeosciencesUniversity of TriesteTrieste 34127Italy National Institute of Oceanography and Applied Geophysics-OGS Borgo Grotta Gigante 42/CTriesteSgonico 34010Italy Department of Civil Engineering University of QomQom ***Iran

One of the common excavation methods in the construction of urban infrastructures as well as water and wastewater facilities is the excavation through soldier pile *** maximum lateral displacement of pile wall is one of the important variables in controlling the stability of the excavation and its adjacent ***,the application of machine learning methods is widely used in engineering sciences due to its low cost and high speed of *** paper utilized three intelligent machine learning algorithms based on the excavation method through soldier pile walls,namely eXtreme gradient boosting(XGBoost),least square support vector regressor(LS-SVR),and random forest(RF),to predict maximum lateral displacement of pile *** results showed that the implemented XGBoost model performed excellently and could make predictions for maximum lateral displacement of pile walls with the mean absolute error of 0.1669,the highest coefficient of determination 0.9991,and the lowest root mean square error *** the LS-SVR,and RF models were less accurate than the XGBoost model,they provided good prediction results of maximum lateral displacement of pile walls for numerical ***,a sensitivity analysis was performed to determine the most effective parameters in the XGBoost *** analysis showed that soil elastic modulus and excavation height had a strong influence on of maximum lateral displacement of pile wall prediction.

关键词： Soldier pile wall Lateral displacements XGBoost Machine learning Artificial intelligence