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Reservoir quality evaluation of the Narimba Formation in Bass Basin,Australia:Implications from petrophysical analysis,sedimentological features,capillary pressure and wetting fluid saturation

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Energy Geoscience 2024年第1期5卷 37-53页

作者： wafa Abdul Qader Al-Ojaili Mohamed Ragab Shalaby Wilfried Bauer Department of Applied Geosciences German University of Technology in OmanOman Geology Department Faculty of ScienceUniversity of Brunei DarussalamBrunei Darussalam Geology Department Faculty of SciencesTanta UniversityTanta31527Egypt

The evaluation of reservoir quality was accomplished on the Late Paleocene to Early Eocene Narimba Formation in Bass Basin,*** study involved combination methods such as petrophysical analysis,petrography and sedimentological studies,reservoir quality and fluid flow units from derivative parameters,and capillary pressure and wetting fluid saturation *** and diagenetic features are affecting the reservoir ***,compaction,and presence of clay minerals such as kaolinite are found to reduce the quality while dissolution and secondary porosity are noticed to improve *** is believed that the Narimba Formation is a potential reservoir with a wide range of porosity and *** ranges from 3.1%to 25.4%with a mean of 15.84%,while permeability ranges between 0.01 mD and 510 mD,with a mean of 31.05 *** on the heterogenous lithology,the formation has been categorized into five groups based on permeability *** I showed an excellent to good quality reservoir with coarse *** impacts of both textural and diagenetic features improve the reservoir and producing higher reservoir quality index(RQI)and flow zone indicators(FZI)as well as mostly mega *** non-wetting fluid migration has the higher possibility to flow in the formation while displacement pressure recorded as *** II showed a fair quality reservoir with lower petrophysical properties in macro *** irreducible water saturation is increasing while the textural and digenetic properties are still enhancing the reservoir *** III reflects lower quality reservoir with mostly macro pores and higher displacement *** may indicate smaller grain size and increasing amount of cement and clay *** IV,and V are interpreted as a poor-quality reservoir that has lower RQI and *** textural and digenetic features are negatively affecting the reservoir and are leading to smaller pore size and pore throat radii(r35)

关键词： Narimba formation Petrophysics Reservoir quality Capillary pressure Wetting fluid saturation

Assessment of tear film parameters post-treatment with commercial eyelid cleaning wipes:a pilot study

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International Journal of Ophthalmology(English edition) 2024年第4期17卷 659-664页

作者： Amal Aldarwesh Ali Almustanyir Raied Fagehi Khalaf Alruways Abdulaziz Bin Turki Mansour Alghamdi Muteb Khalaf Alanazi Balsam Alabdulkader wafa Alotaibi Mosaad Alhassan Department of Optometry College of Applied Medical SciencesKing Saud UniversityRiyadh 11433Saudi Arabia

AIM:To investigate the short-term effects of commercially available eyelid-cleaning wipes on film ***:This study enrolled 48 healthy participants aged 20-35y(both males and females).Clinical assessment included the Ocular Surface Disease Index(OSDI)questionnaire,non-invasive tear break-up time(NITBUT),tear meniscus height(TMH),and lipid layer pattern(LLP).Based on these initial results,participants were categorized as either non-dry eye or dry *** in each group were randomly allocated to either Blephaclean■or Systane■*** in NITBUT,TMH,and LLP levels before and after lid wipe treatment were ***:The dry eye group exhibited significantly higher OSDI scores and lower NITBUT and TMH levels than in the non-dry eye group(P0.05).Similarly,the LLP levels were significantly improved with Systane■(P<0.001)post-treatment compared to individuals in the non-dry eye ***,the dry eye subjects showed higher posttreatment LLP levels than the untreated group(P<0.02).CONCLUSION:The short-term effects of Systane®eyelid wipes on tear film parameters suggest their effectiveness in dry eye ***,further exploration of their long-term impact is essential to justify their cost effectiveness and efficacy in treating both aqueous deficiency and evaporative dryness.

关键词： dry eye lid wipes tear break-up time tear meniscus height

Comparing the efficiency of artificial neural networks in sEMG-based simultaneous and continuous estimation of hand kinematics

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Digital Communications and Networks 2022年第2期8卷 162-173页

作者： wafa Batayneh Enas Abdulhay Mohammad Alothman Jordan University of Science and Technology Mechanical Engineering DepartmentIrbid22110 Jordan Jordan University of Science and Technology Biomedical Engineering DepartmentIrbid22110 Jordan

Surface Electromyography(sEMG)plays a key role in many applications such as control of Human-Machine Interfaces(HMI)and neuromusculoskeletal *** has strongly nonlinear relations to joint kinematics and reflects the subjects’intention in moving their *** relations have been traditionally examined by either integrated biomechanics and multi-body dynamics or gesture-based classification ***,these methods have drawbacks that limit their *** from them,joint kinematics can be continuously reconstructed from sEMG via estimation approaches,for instance,the Artificial Neural Networks(ANNs).The Comparison of different ANNs used in different studies is difficult,and in many cases,*** current study focuses on fairly evaluating four types of ANN over the same dataset and conditions in proportional and simultaneous estimation of 15 hand joint angles from 10 sEMG *** presented ANNs are Feedforward,Cascade-Forward,Radial Basis Function(RBFNN),and Generalized Regression(GRNN).Each ANN is applied to its special parametric *** the methods efficiently solved the regression problem of the complex multi-input multi-output *** RBFNN has the best performance over the others with a 79.80%mean correlation coefficient over all joints,and its accuracy reaches as high as 92.67%in some ***,the highest accuracy over individual joints is 93.46%,which is achieved via the *** good accuracy suggests that the proposed approaches can be used as alternatives to the previously adopted ones and can be employed effectively to synchronously control multi-degrees of freedom HMI and for general multi-joint kinematics estimation purposes.

关键词： Surface electromyography Kinematics estimation Artificial neural networks

Factor driving heterotrophic dinoflagellate in relation to environment conditions in Kerkennah Islands(eastern coast of Tunisa)

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Journal of Coastal Life Medicine 2015年第9期 686-690页

作者： Mounir Ben Brahim Morsi feki wafa feki-Sahnoun Mabrouka Mahfoudi Asma Hamza Faculty of Sciences of Sfax Road of Soukra km 4BP 802-3038 SfaxTunisia National Institute of Sciences and Technologies of the Sea Center of Sfax-BP 1035-CP.3018.SfaxTunisia

Objective:To study the seasonal variability of heterotrophic dinoflagellate in the station of Cercina(southern coast of Tunisia).Methods:Sampling was done in 2007 in Cercina station located in the western coast of Kerkennah(34°41'27''N;11°07'45''E)(Southern Tunisia).Three replicates of water samples were taken during 10 days of each *** variables and nutrients were measured in ***:A significant seasonal difference was observed for temperature and water *** highest values were observed in spring and *** significant seasonal difference was,however,detected for nitrite,nitrate,ammonia,silica and ***-five species of dinoflagellate were identified in the station of *** of dinoflagellates fluctuated between seasons with values showing a significant seasonal and monthly *** highest mean abundance was recorded in spring in April,while the lowest abundance was detected in December in *** granii was the main species contributing to the dissimilarity between spring and winter with 13.98%followed by Peridinium *** 12.5%of dissimilarity and by Polykrikos *** 10.58%.Conclusions:Heterotrophic dinoflagellates proliferate in spring and *** increase was justified by the nutrient *** granii and Polykrikos kofoidii were the main heterotrophic dinoflagellate making difference between seasons and their densities were positively correlated with both temperature and salinity.

关键词： Heterotrophic dinoflagellate Variability Seasonal Kerkennah Tunisia

Circle-criterion Based Nonlinear Observer Design for Sensorless Induction Motor Control

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International Journal of Automation and computing 2014年第6期11卷 598-604页

作者： wafa Bourbia Farid Berrezzek Bachir Bensaker University Badji Mokhtar Department of Electrotechnic BP.12 Annaba 23000 Algeria University Med Cherif Messadia Souk Ahras 41000 Algeria Laboratory of Electromechanical Systems University Badji Mokhtar BP.12 Annaba 23000 Algeria

This paper deals with the design of a nonlinear observer for sensorless induction motor control. Based upon the circle criterion approach, a nonlinear observer is designed to estimate pertinent but unmeasurable state variables of the considered induction machine for sensorless control purpose. The observer gain matrices are computed as a solution of linear matrix inequalities(LMI) that ensure the stability conditions of the state observer error dynamics in the sense of Lyapunov concepts. Measured and estimated state variables can be exploited to perform a state feedback control of the machine system. The simulation results are presented to illustrate the effectiveness of the proposed approach for nonlinear observer design.

关键词： Nonlinear observer circle-criterion Lyapunov stability linear matrix inequalties (LMI) induction motor

In vivo study of pomegranate(Punica granatum) peel extract efficacy against Giardia lamblia in infected experimental mice

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Asian Pacific Journal of Tropical Biomedicine 2017年第1期7卷 59-63页

作者： wafa Abdullah Al-Megrin Department of Biology Faculty of SciencePrincess Nourah Bint Abdul Rahman UniversityRiyadhSaudi Arabia

Objective: To investigate the efficacy of pomegranate(Punica granatum) peel extract as an alternative treatment on the white laboratory mice against ***: Experimental animals were divided into five groups, including Group A:control(infected untreated), Group B: infected and fed with pectin 7 days before infection, Group C: infected and fed with pectin starting from 7th day of infection,Group D: infected and fed with pomegranate peel extract 7 days before infection, and Group E: infected and fed with pomegranate peel extract starting from 7th day of ***: Results from this study revealed that the prevention rate in the experimental groups reached approximately 50% by the 10 th day of using pomegranate peel ***, stool cyst counts of groups showed a significant reduction in the shedding of cysts approximately 75.6% by day 20 post-infection. ELISA test showed a reduction in Giardia antigen in the stools of the experimental groups which received pomegranate peel extract. The cure rate of these groups was approximately 97.4% by 28 th day of ***: Our present findings indicated that the pomegranate peel extract proved to be valuable in prevention and treatment of Giardia lamblia infection. Further studies are required to determine the effective dose of pomegranate peel extract against Giardia lamblia infection.

关键词： Pomegranate Giardia lamblia Swiss albino mice Saudi Arabia

Delay-dependent Stabilization Conditions of Controlled Positive Continuous-time Systems

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International Journal of Automation and computing 2014年第6期11卷 653-660页

作者： wafa Elloumi Abdellah Benzaouia Mohamed Chaabane Lab-STA National School of Engineering of Sfax University of Sfax PB 1173 3038 Sfax Tunisia LAEPT URAC 28 University Cadi Ayyad Faculty of Science Semlalia BP 2390 Marrakech Morocco

The stabilization problem for a class of linear continuous-time systems with time-varying non differentiable delay is solved while imposing positivity in closed-loop. In particular, the synthesis of state-feedback controllers is studied by giving sufficient conditions in terms of linear matrix inequalities(LMIs). The obtained results are then extended to systems with non positive delay matrix by applying a memory controller. The effectiveness of the proposed method is shown by using numerical examples.

关键词： Positive systems delay systems stabilization linear matrix inequalities (LMIs) time-varying delay non differentiable delay

Generating Synthetic Data to Reduce Prediction Error of Energy Consumption

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Computers, Materials & Continua 2022年第2期70卷 3151-3167页

作者： Debapriya Hazra wafa Shafqat Yung-Cheol Byun Department of Computer Engineering Jeju National UniversityJeju-siKorea

Renewable and nonrenewable energy sources are widely incorporated for solar and wind energy that produces electricity without increasing carbon dioxide *** industries worldwide are trying hard to predict future energy consumption that could eliminate over or under contracting energy resources and unnecessary *** learning techniques for predicting energy are the trending solution to overcome the challenges faced by energy *** basic need for machine learning algorithms to be trained for accurate prediction requires a considerable amount of *** critical factor is balancing the data for enhanced *** Augmentation is a technique used for increasing the data available for *** data are the generation of new data which can be trained to improve the accuracy of prediction *** this paper,we propose a model that takes time series energy consumption data as input,pre-processes the data,and then uses multiple augmentation techniques and generative adversarial networks to generate synthetic data which when combined with the original data,reduces energy consumption prediction *** propose TGAN-skip-Improved-WGAN-GP to generate synthetic energy consumption time series tabular *** modify TGANwith skip connections,then improveWGANGPby defining a consistency term,and finally use the architecture of improved WGAN-GP for training *** used various evaluation metrics and visual representation to compare the performance of our proposed *** also measured prediction accuracy along with mean and maximum error generated while predicting with different variations of augmented and synthetic data with original *** mode collapse problemcould be handled by TGAN-skip-Improved-WGAN-GP model and it also converged faster than existing GAN models for synthetic data *** experiment result shows that our proposed technique of combining synthetic data with original data could significantly red

关键词： Energy consumption generative adversarial networks synthetic data time series data TGAN WGAN-GP TGAN-skip prediction error augmentation

Effect of the Arrangement of a New-Type of Turbulator Inserts on Heat Pipe Exchanger Performances

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Fluid Dynamics & Materials Processing 2023年第10期19卷 2749-2759页

作者： Ibtisam A.Hasan wafa Maki Department of Electromechanical Engineering The University of TechnologyBaghdadIraq

This research tests the effect of introducing turbulators of a new type into a circular tube heat exchanger under a constant and uniform longitudinal heatﬂux condition.A 45 mm diameter copper tube with a length of 1,350 mm is utilized with a solid disk being inserted inside the tube,which consists of three sections,each one containing two *** slot is cut at a 45 degree angle toward the inner tube surface,which results in diverging theﬂow toward the inner hot tube surface in order to enhance the heat transfer *** is considered as the workingﬂuid with Prandtl number *** Reynolds number spans the interval from 6,000–13,500,which indicates that the consideredﬂow is *** heat exchanger performance is studied and analyzed in terms of average Nusselt *** experimental results show that the Nusselt number value is directly proportional to the increase of the Reynolds number,and the number of turbulators *** the use of three novel turbulators,the heat transfer was about 3.15 times higher than that in the smooth tube and the friction factor was about 1.11.

关键词： Heat pipe exchanger heat transfer inserts(NT inserts) turbulators(novel turbulators) disk(solid disk)