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Super gas wet and gas wet rock surface: State of the art evaluation through contact angle analysis

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Petroleum 2023年第1期9卷 1-7页

作者： mohammad Azadi Tabar Abolfazl Dehghan Monfared Flor Shayegh Farzad Barzegar mohammad hossein Ghazanfari Department of Chemical and Petroleum Engineering Sharif University of TechnologyTehran11155-9564Iran Department of Petroleum Engineering Faculty of PetroleumGas and Petrochemical EngineeringPersian Gulf UniversityBushehr75169-13817Iran Research Institute of Petroleum Industry Tehran14665-137Iran

Recently,super gas wet and gas wet surfaces have been extensively attended in petroleum industry,as supported by the increasing number of publications in the last decade related to wettability alteration in gas condensate *** many cases,contact angle measurement has been employed to assess the wettability *** though contact angle measurement seems to be a straightforward approach,there exist many misuses of this technique and consequently misinterpretation of the corresponding *** this regard,a critical inspection of the most recent updated concepts and the intervening parameters in the contact angle based wettability evaluation of liquid-solid-gas systems could aid to provide some remediation to alleviate this *** this end,this work presents a survey on the accurate terms and rigorous protocols based on the community of surface science and *** a preliminary step,advancing,receding,static,and the most stable contact angle terminology are *** study is followed by the definition of the contact angle hysteresis *** application of surface free energy in the selection of the best gas wet agent is then ***,the impact of the size-dependent behavior of drop on contact angle is ***,a sessile drop experiment is explained to achieve the defined *** future contributions to petroleum industry journals,like this journal,this work could offer an easy use of the conceptual framework for analyzing the results and comparative evaluations in chemical wettability modifier agents.

关键词： Contact angle hysteresis Size-dependent behavior Surface free energy Stick-slip Wettability alteration Condensate reservoirs

Design,construction and performance evaluation of paddy rice solar drum dryer equipped with perforated drum

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Clean Energy 2023年第2期7卷 328-339页

作者： Maedeh Leilayi Akbar Arabhosseini mohammad hossein Kianmehr Heman Amiri Department of Agriculture Engineering College of Abouraihan-University of TehranTehranIran

A solar drum dryer was designed and constructed for paddy drying,including a fixed outer drum and inner perforated drum,which rotated at the desired rotational speed inside the outer *** maximum capacity of the dryer was 10000 *** rotational speed of the inner drum was *** thermal energy required for the dryer was provided by a solar absorber *** dryer per-formance was examined at three levels of rotational speed(0.21,0.42 and 0.84 r.p.m.),drum slope(1°,1.5°and 2°)and air velocity(1.7,1.8 and 1.9 m.s^(-1)).The diameter of the drum was the geometrical parameter that affected the movement of the particles and the ratio of the particle diameter to the drum diameter changed with the change in the drum ***,increasing the diameter of the drum caused a reduction in the repose angle of the paddy without any effect on the filling *** displacement of the product along the drum increased with increasing slope and rotational *** the lowest air velocity,the time required to remove moisture(<13%)was *** results showed a significant reduction in cracked brown rice for the paddy dried by the drum dryer at 43-46℃ compared with those dried using a batch *** highest stress-cracking index(11)was observed for the paddy with an initial moisture of 16%.The results showed that for proportional final moisture content,a longer drum should be considered to intensify the slope and rotational speed of the inner drum.

关键词： crack moisture content paddy drying rice rotary dryer solar energy

Effect of synthetic fibers on resisting scour caused by horizontal jet

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Water Science and Engineering 2022年第2期15卷 152-160页

作者： Amin Ghassemi Mohsen Nasrabadi mohammad hossein Omid Ali Raeesi Estabragh Department of Civil Engineering Queen's UniversityKingston K7L 3N6Canada Department of Water Science and Engineering Arak UniversityArak 38481-77584Iran Department of Irrigation and Reclamation Engineering University of TehranKaraj 31587-77871Iran

Given that the development of scour downstream of hydraulic structures increases the risk of structural damage,it is important to find cost-effective and environmental approaches to reduce this *** study aimed to experimentally evaluate the effect of synthetic fibers on the scour profile downstream of a sluice gate with a rigid *** were performed with the same Froude number and with different weight percentages of synthetic fibers on both non-cohesive and cohesive *** uniform sand was used as the non-cohesive sediment,and three different cohesive sediments were prepared by mixing different percentages of kaolinite soil with the used *** scouring experiments showed that the presence of synthetic fibers did not considerably affect the scour hole dimension in non-cohesive *** of the scour in the cohesive sediments in silty sand(SM)texture found that an increase in the percentage of silt reduced the scour hole *** effect of synthetic fibers on scour of SM-texture-based sediments was also investigated,and the results showed that increasing the percentage of synthetic fibers decreased the scour hole *** addition,the cohesive sediments in SM texture did not have a similar non-dimensional scour profile,and the presence of synthetic fibers did not significantly affect the scour hole.

关键词： Local scouring Synthetic fibers Horizontal jet SM soil texture Scour profile

Microstructure and Corrosion Properties of CP-Ti Processed by Laser Powder Bed Fusion under Similar Energy Densities

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Acta Metallurgica Sinica(English Letters) 2022年第9期35卷 1453-1464页

作者： mohammad hossein Mosallanejad Saber Sanaei Masoud Atapour Behzad Niroumand Luca Iuliano Abdollah Saboori Department of Materials Engineering Isfahan University of Technology84156-83111IsfahanIran Department of Applied Science and Technology Politecnico di TorinoCorso Duca Degli Abruzzi 2410129TorinoItaly Department of Management and Production Engineering Politecnico di TorinoCorso Duca Degli Abruzzi 2410129TorinoItaly

In this work, two types of CP Ti cubes with similar volumetric energy densities(VED) but diff erent process parameters were produced using laser powder bed fusion(LPBF) method. The corrosion behavior of the fabricated specimens was investigated by conducting electrochemical impedance spectroscopy(EIS) and polarization experiments in simulated body fl uid(SBF) solution at 37 °C. The results indicated that the microstructure and porosities, which are of great importance for biomedical applications, can be controlled by changing the process parameters even under constant energy densities. The sample produced with a lower laser power(E1) was featured with a higher level of porosity and thinner alpha laths, as compared with the sample fabricated with a higher laser power(E2). Moreover, results obtained from the bioactivity tests revealed that the sample produced with a higher laser power conferred a slight improvement in the bioactivity due to the higher amount of porosity. Lower laser power and hence higher porosity level promoted the formation of bone-like apatite on the surface of the printed specimens. The potentiodynamic polarization tests revealed inferior corrosion resistance for the fabricated sample with higher porosity. Moreover, the EIS results after diff erent immersion times indicated that a stable oxide film was formed on the surface of samples for all immersion times. After 1 and 3 days of immersion, superior passivation behavior was observed for the sample fabricated with lower laser power. However, very similar impedance and phase values were observed for all the samples after 14 days of immersion.

关键词： Additive manufacturing Laser powder bed fusion Energy density Corrosion Microstructure CP Titanium

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Journal of Integrative Medicine 2023年第4期21卷 354-360页

作者： Amir mohammad Jaladat Mahdi Alizadeh Vaghasloo Fatemeh Atarzadeh mohammad hossein Ayati Amir Hooman Kazemi Emine Akin mohammad Hashem Hashempur Department of Persian Medicine School of MedicineShiraz University of Medical SciencesShiraz ***Iran Department of Traditional Medicine School of Persian MedicineTehran University of Medical SciencesTehran ***Iran Department of History of Medicine School of Traditional MedicineTehran University of Medical SciencesTehran ***Iran International School Beijing University of Chinese MedicineBeijing 100029China Alkali Life Center Healthy Life&Consultancy and EducationAtas ehir-Istanbul 34750Turkey Research Center for Traditional Medicine and History of Medicine Department of Persian MedicineSchool of MedicineShiraz University of Medical SciencesShiraz ***Iran

Kaiy(medieval cautery)is an ancient method of heat therapy in traditional Persian medicine(TPM).Some of its important applications have been neglected during the medical ***,different treatment modalities that incorporate heat,including moxibustion,have progressed in traditional Chinese *** this study,we reviewed the main TPM textbooks that were written specifically in the field of *** considered the traditional teachings in the context of contemporary information,gathered from the scientific literature about moxibustion and modern *** surgical therapeutic indications of kaiy(e.g.,debridement and coagulative procedures)have been advanced by the innovation of ***,those therapeutic applications that were based on the TPM humoral theory for relieving body coldness or myofascial pains—which are similar to moxibustion usages—have not received the same *** from the broad similarities of kaiy and moxibustion as thermal therapies with similar indications,there is a striking correspondence between kaiy point mapping and ***,further research on different kaiy aspects is recommended.

关键词： Traditional Persian medicine Moxibustion Chinese medicine Kaiy Medieval cautery Fire acupuncture

Antiviral Activity of Medicinal Plants against Human Coronavirus: a systematic scoping review of in vitro and in vivo experimentations

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Journal of Traditional Chinese Medicine 2022年第3期42卷 332-343页

作者： Parva Namiranian Omid Sadatpour Sadegh Azimzadeh Jamalkandi mohammad hossein Ayati Mehrdad Karimi Department of Traditional Medicine School of Persian MedicineTehran University of Medical SciencesTehranIran Department of Immunology School of MedicineTehran University of Medical SciencesTehranIran Chemical Injuries Research Center Systems Biology and Poisonings InstituteBaqiyatallah University of Medical SciencesTehranIran

OBJECTIVE:To investigate the in vitro and in vivo studies of natural compounds and medicinal plants with anti-coronavirus ***:A systematic review was performed based on Preferred Reporting Items for Systematic Reviews and Meta-Analyses and Animal Research:Reporting of in vivo experiments guidelines to find data for medicinal plants and natural products effective against human coronaviruses in in vitro or in vivo *** published up to September 6,2020 were ***(in vitro or in vivo)reporting the effect of medicinal plants and natural products or their derivatives on human coronavirus were included RESULTS:Promising anti-coronavirus effects are seen with different herbal compounds like some diterpenoids,sesquiterpenoids,and three compounds in tea with 3 CLpro inhibiting effect of Severe Acute Respiratory Syndrome Coronavirus(SARS-Co V);Hirsutenone,Six cinnamic amides and bavachinin are PLpro inhibitors and Tanshinones are active on both 3 CLpro and *** flavonoid compounds of Citrus fruits act on Immunoregulation and target angiotensin-converting enzyme 2 which is used by SARS-COV for *** helicase is possibly inhibited by two compounds myricetin and ***:This review shows that complementary medicine have the potential for new drug discovery against *** research is needed before definitive conclusions can be made concerning the safety and efficacy of the use of these medicinal plants.

关键词： Coronavirus medicine,Persian medicine,Chinese traditional plants,medicinal new drug discovery

Collar performance in bridge pier scour with debris accumulation

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International Journal of Sediment Research 2022年第3期37卷 328-334页

作者： hossein Hamidifar Seyed mohammad Bagher Shahabi-Haghighi Yee Meng Chiew Water Engineering Department Shiraz University School of Civil and Environmental Engineering Nanyang Technological University

The mechanism of bridge pier scour becomes more complex in the presence of debris accumulation upstream of the pier. While using countermeasures may be effective in reducing scour, their efficacy could be undermined in such a situation. The current study investigates the effectiveness of using a collar in the presence of different types of floating debris accumulation in reducing scour around a cylindrical bridge pier with non-cohesive bed sediment. The experimental results reveal that using a collar can reduce the scour depth by up to 39% when compared to that without the collar in the absence of debris accumulation under the same flow conditions. Also, the collar’s efficiency is reduced by up to 25% when debris accumulation is present. However, depending on the relative size of the accumulated debris and collar, the effectiveness of collars may be increased as a pier-scour protection device. A new parameter,which is defined as the Debris Protrusion Ratio(DPR), is used to quantify the effect of debris layout size on scour depth. Moreover, a semi-empirical equation that may be used to predict the depth of the scour hole that forms around cylindrical collar-fitted piers with floating debris accumulation is proposed. The equation’s performance is evaluated using the available data in the literature. Based on the analysis, the current study shows that the accuracy of the proposed equation is satisfactory in predicting the maximum scour depth.

关键词： Bridge pier Scour Debris Collar Blockage

Developing a robust correlation for prediction of sweet and sour gas hydrate formation temperature

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Petroleum 2022年第2期8卷 204-209页

作者： mohammad Mesbah Samaneh Habibnia Shahin Ahmadi Amir hossein Saeedi Dehaghani Sareh Bayat Young Researchers and Elites Club Science and Research BranchIslamic Azad UniversityTehranIran Department of Chemical Engineering Sahand University of TechnologyTabrizIran Department of Environmental Health Engineering Faculty of Environment Health EngineeringZabol University of Medical SciencesZabolIran Department of Petroleum Engineering Faculty of Chemical EngineeringTarbiat Modares UniversityTehranIran Department of Environmental Health Engineering School of Public HealthHamedan University of Medical SciencesHamedanIran

There are numerous correlations and thermodynamic models for predicting the natural gas hydrate formation condition but still the lack of a simple and unifying general model that addresses a broad ranges of gas *** study was aimed to develop a user-friendly universal correlation based on hybrid group method of data handling(GMDH)for prediction of hydrate formation temperature of a wide range of natural gas mixtures including sweet and sour *** establish the hybrid GMDH,the total experimental data of 343 were obtained from open *** selection of input variables was based on the hydrate structure formed by each gas *** modeling resulted in a strong algorithm since the squared correlation coefficient(R2)and root mean square error(RMSE)were 0.9721 and 1.2152,*** comparison to some conventional correlation,this model represented not only the outstanding statistical parameters but also its absolute superiority over *** particular,the result was encouraging for sour gases concentrated at H2S to the extent that the model outstrips all available thermodynamic models and *** statistical approach was applied on datasets to the discovery of the defected and doubtful experimental data and suitability of the *** to this algorithm,approximately all the data points were in the proper range of the model and the proposed hybrid GMDH model was statistically reliable.

关键词： Hydrate formation temperature HFT Wide range of natural gas mixtures Unified correlation Group method of data handling GMDH Outlier detection

A new robust predictive model for lost circulation rate using convolutional neural network:A case study from Marun Oilfield

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Petroleum 2023年第3期9卷 468-485页

作者： Farshad Jafarizadeh Babak Larki Bamdad Kazemi mohammad Mehrad Sina Rashidi Jalil Ghavidel Neycharan Mehdi Gandomgoun mohammad hossein Gandomgoun Department of Petroleum Engineering Amirkabir University of TechnologyTehranIran Department of Petroleum Engineering Omidiyeh Branch of Islamic Azad UniversityOmidiyehIran Science and Research Branch Islamic Azad UniversityTehranIran Faculty of Mining Petroleum and Geophysics EngineeringShahrood University of TechnologyShahroodIran Department of Information Technology and Computer Engineering Shahid Madani University of AzerbaijanTabrizIran Faculty of Petroleum Engineering Sahand University of TechnologyTabrizIran

A major cause of some of serious issues encountered in a drilling project,including wellbore instability,formation damage,and drilling string stuck e which are known to increase non-productive time(NPT)and hence the drilling cost e is what we know as mud *** mud loss can be prevented or at least significantly reduced by taking proper measures beforehand provided the position and intensity of such loss can be properly predicted using an accurate predictor ***,in this study,we used the convolutional neural network(CNN)and hybridized forms of multilayer extreme learning machine(MELM)and least square support vector machine(LSSVM)with the Cuckoo optimization algorithm(COA),particle swarm optimization(PSO),and genetic algorithm(GA)for modeling the mud loss rate based on drilling data,mud properties,and geological information of 305 drilling wells penetrating the Marun *** this purpose,we began by a pre-processing step to attenuate the effect of noise using the Savitzky-Golay *** whole set of available data was divided into the modeling(including 2300 data points)and the validation(including 483 data points)***,the second generation of the non-dominated sorting genetic algorithm(NSGA-Ⅱ)was applied to the modeling data to identify the most significant features for estimating the mud *** results showed that the prediction accuracy increased with the number of selected features,but the increase became negligible when the number of selected features exceeded ***,the following 9 features were selected as input to the intelligent algorithms(IAs):pump pressure,mud weight,fracture pressure,pore pressure,depth,gel 10 min/gel 10 s,fan 600/fan 300,flowrate,and formation *** of the hybrid algorithms and simple forms of LSSVM and CNN to the training data(80%of the modeling data,i.e.1840 data points)showed that all of the models tend to underestimate the mud loss at higher mud loss rates,although the CNN exhibited l

关键词： Lost circulation prediction Artificial intelligence Deep learning Feature selection