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Physical properties and maximum allowable mass-radius relation of complexity-free compact stellar objects within modified f(R,T)gravity formalism

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Chinese Physics C 2024年第7期48卷 273-288页

作者： M.K.Jasim S.K.Maurya Abdelghani Errehymy Ali Khalid Jassim Kottakkaran Sooppy Nisar Abdel-Haleem Abdel-Aty Department of Mathematical and Physical Sciences College of Arts and SciencesUniversity of NizwaNizwa 616Sultanate of Oman Astrophysics Research Centre School of MathematicsStatistics and Computer ScienceUniversity of KwaZulu-NatalPrivate Bag X54001Durban 4000South Africa Electrical Engineering Department College of EngineeringMustansiriyah UniversityBaghdadIraq Department of Mathematics College of Science and Humanities in AlkharjPrince Sattam bin Abdulaziz UniversityAl KharjSaudi Arabia Department of Physics College of SciencesUniversity of BishaP.O.Box 344Bisha 61922Saudi Arabia

This paper investigates the physical properties and predicted radii of compact stars generated by the Tolman-IV complexity-free model within the background of modified gravity theory,particularly the f(R,T)-gravity theory,under complexity formalism for a spherically symmetric spacetime proposed by ***[Phys Rev D 97:044010,2018].By solving the resulting set of differential equations,we obtain the explicit forms of the energy-momentum(EM)tensor components,including the density,radial pressure,and tangential *** influence of the parameterχon various physical properties of the star is thoroughly *** model undergoes a series of rigorous tests to determine its physical *** findings indicate that the model exhibits regularity,stability,and a surface with vanishing *** boundary of this surface is determined by carefully selecting the parameter *** complexity method employed in f(R,T)gravity offers an interesting approach for developing astrophysical models that are consistent with observable events as demonstrated by recent *** this regard,we use observational data from the GW190814 event,detected by the LIGO and Virgo observatories,to investigate the validity of the Tolman-IV model in f(R,T)*** analysis includes comparing the model's predictions with the observed characteristics of the compact object involved in the *** addition,data from two-millisecond pulsars,PSR J1614-2230 and PSR J0952-0607,are incorporated to further constrain the theoretical ***,we present a diagram depicting the relationship between the total mass and radius of the compact object candidates for different values ofχ.

关键词： complexity modified gravity compact Stars

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Overview on signal transduction cascades regulation roles of garlic and its bioactive constituents

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Food Science and Human Wellness 2024年第5期13卷 2353-2362页

作者： Ammad Ahmad Farooqi Iqra Mobeen Rukset Attar Khalida I.Noel Baojun Xu William C.Cho Institute of Biomedical and Genetic Engineering(IBGE) Islamabad 44000Pakistan Khursheed Rasheed Hospital Lahore Lahore 53720Pakistan Department of Obstetrics and Gynecology Yeditepe UniversityAtaşehir 34755Turkey Human Anatomy Department College of MedicineAl-Mustansiriyah UniversityBaghdad 10036Iraq Food Science and Technology Program Department of Life SciencesBNU-HKBU United International CollegeZhuhai 519087China Department of Clinical Oncology Queen Elizabeth HospitalHong Kong G514TFChina

High-throughput technologies in combination with modern exciting advancements in mass spectrometry-based proteomics and data analysis pipelines have empowered comprehensive characterization of disease phenotypes and their mechanistic regulation by dietary agents and bioactive molecules at unprecedented dimensionality and ***-ordinary breakthroughs in the field of nutrigenomics have leveraged our understanding altogether to a new level of *** researchers have extensively analyzed health promoting and pharmacologically significant properties of garlic(Allium sativum).Importantly,garlic and its biologically active chemicals targeted oncogenic signaling *** this mini-review we have attempted to summarize how garlic and its bioactive constituents regulated signal transduction cascades in cell culture studies and tumor-bearing mice.

关键词： Cancer Nutrigenomics Signaling Apoptosis Allium sativum

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Preparation and photocatalytic property of Fe_(2)O_(3)/ZnO composites with superhydrophobicity

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International Journal of Minerals,Metallurgy and Materials 2021年第6期28卷 1072-1079页

作者： Muntadher I.Rahmah Raad S.Sabry Wisam J.Aziz Physics Department College of ScienceMustansiriyah UniversityBaghdad 10052Iraq

A facile approach was developed to construct Fe_(2)O_(3)-modified ZnO micro/nanostructures with excellent superhydrophobicity and photocatalytic *** effects of stearic acid(SA)and Fe_(2)O_(3) on the morphological characteristics,water contact angle(WCA),and photocatalytic degradation were *** results showed that WCA increased from 144°±2°to 154°±2°when the weight of SA increased from 5 to 20 mg because of the formation of a hierarchical or rough ***,Fe_(2)O_(3)-modified ZnO micro/nanostructure surfaces before and after SA treatment(20 mg)were chosen to evaluate the photodegradation of methylene blue(MB)dye under the support of visible *** degraded after 80 min of irradiation,and its photodegradation efficiencies were 91.5%at the superhydrophobic state and 92%at the hydrophilic *** improvement in photocatalytic activity at both states might be attributed to an increase in surface area and improvement in charge carrier separation.

关键词： nano composites stearic acid superhydrophobic photocatalytic self-cleaning

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Effects of jute fibre content on the mechanical and dynamic mechanical properties of the composites in structural applications

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Defence Technology（防务技术） 2020年第6期16卷 1098-1105页

作者： Suhad D.Salman Mechanical Engineering Department College of EngineeringMustansiriyah UniversityBaghdadIraq

Due to notable characteristics,sustainability concept and environmental issues,hybridisation natural with synthetic fibres to fabricate composites have been rapidly gaining market share in different applications(structural,military,aerospace and automotive vehicles).Compression,tension and fatigue tests of various stacking sequences of plain jute/carbon reinforced(PVB)polyvinyl butyral by hot hydraulic press technique were experimentally *** types of fabricated composites with various constituents(jute,carbon and their hybrids)were fabricated and ***,fatigue lifetime of hybrids increases with increasing the carbon content relative to the jute fibre *** the other hand,Jute composites possess high strain compared to pure carbon composite,which gives an overall improvement in mechanical ***,H1 hybrid with Carbon/Jute/Carbon sequences offers similar fatigue stiffness behaviour of H3 hybrid with Carbon/Jute/Carbon/Jute sequences when subjected to cyclic *** composite(C)exhibited the highest fatigue resistance,whiles jute composite(J)possessed the highest strain and semi brittle trends in both mechanical and fatigue *** concluded that plain jute fibres could partially replace high-cost synthetic carbon fibres to produce more eco-friendly hybrids to be utilised in different composites industries.

关键词： Plain woven jute Carbon fabric Hybrid composite Mechanical Cyclic loading Morphological Fatigue properties

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Effect of gender on the reliability of COVID-19 rapid antigen test among elderly

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World Journal of Clinical Cases 2022年第29期10卷 10820-10822页

作者： Wassan Nori Wisam Akram Department of Obstetrics and Gynecology Mustansiriyah UniversityBaghdad 10052Iraq Department of Obstetrics and Gynecology College of MedicineMustansiriyah UniversityBaghdad 10052Iraq

Defining con-founders that affect the reliability of diagnostic tests for coronavirus disease 2019 is vital to breaking the chain of *** elderly population is a higher risk group for the emerging ***,gender seems to exert a critical role in modifying the infection risk among women owing to hormonal *** menopause transition is an exceptional period for older women where the protective and immunomodulatory effects of the estrogen hormone are ***,attention should be given to postmenopausal women since they will have an increased risk compared to their pre-menopausal peers.

关键词： COVID-19 Rapid antigen test Real-time reverse transcription-polymerase chain reaction Age Gender Postmenopausal women

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Numerical investigation on effect of various pump rotational speeds on performance of centrifugal pump based on CFD analysis technique

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第5期12卷 210-233页

作者： Ahmed Ramadhan Al-Obaidi Department of Mechanical Engineering Faculty of Engineering Mustansiriyah UniversityBaghdadIraq

In this study,the flow structure and effect of different pump rotational speeds on a centrifugal pump’s performance are experimentally and numerically *** internal flow field pattern within the pump has been analyzed and discussed using the CFD *** numerical results are compared with experimental data under a wide range of operating *** comparison results between them have indicated a considerable *** pressure variations are gradually increasing from inlet to outlet impeller of the *** results note that when the impeller rotates near the tongue region,the pressure in this region was higher than in other ***,the interaction between the impeller and volute tongue region is actually according to the impeller blades’relative position concerning the tongue ***,the pressure and velocity variations within a centrifugal pump increase with rotational impeller speed.

关键词： Centrifugal pump pressure variations velocity variations pump rotational speed CFD

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Omicron targets upper airways in pediatrics,elderly and unvaccinated population

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World Journal of Clinical Cases 2022年第32期10卷 12062-12065页

作者： Wassan Nori Muna Abdul Ghani Zghair Department of Obstetrics and Gynecology Mustansiriyah UniversityBaghdad 10052Al SaydyiaIraq Department of Radiology Mustansiriyah UniversityBaghdad 10052Hay Al jammeaIraq

Omicron,a severe acute respiratory syndrome coronavirus-2 variant,has spread around the globe,causing dramatic increases in infection *** mutant antigens were responsible for the strong infectivity,fast replication,and high reinfection rates reported from all *** causes clinical symptoms mostly related to the upper respiratory tract with minimal symptoms from the lower respiratory tract besides an urgent presentation of cases that resembled a fatal illness,*** to mention the long coronavirus disease 2019,which rises exponentially in the Omicrons ***,the disease has a less aggressive course than earlier variants with lower death rates;however,the infection is not *** infection was raised among pediatrics,unvaccinated,and the *** vaccine protection is urgently needed to protect the most vulnerable community ***,self-protective strategies such as wearing a mask and safe social distancing cannot be omitted.

关键词： Omicron SARS-CoV-2 Upper respiratory tract Epiglottitis Pediatrics Unvaccinated

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Frequency control of future power systems: reviewing and evaluating challenges and new control methods

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Journal of Modern Power Systems and Clean Energy 2019年第1期7卷 9-25页

作者： Zeyad Assi OBAID Liana M.CIPCIGAN Lahieb ABRAHIM Mazin T.MUHSSIN College of Engineering University of Diyala Institute of Energy School of Engineering Cardiff University School of Engineering South Wales University College of Engineering Mustansiriyah University

Integration of more renewable energy resources introduces a challenge in frequency control of future power *** paper reviews and evaluates the possible challenges and the new control methods of frequency in future power *** types of loads and distributed energy resources(DERs) are reviewed.A model representation of a population of the water heater devices for the demand side frequency response is considered.A model representation of a population of battery energy storage system(BESS)-based DERs such as smart electric vehicles(EVs) charging, large-scale BESSs, and residential and non-residential BESSs, are *** simplified Great Britain power system and the 14-machine South-East Australian power system were used to demonstrate the effectiveness of the new methods in controlling power system frequency following a *** new methods are effective in recovering the fallen frequency response and present a great potential in controlling the frequency in future power systems.

关键词： Battery energy storage system(BESS) Distributed energy resource(DER) Electric vehicle Home-based BESS Large-scale BESS aggregation Demand side response Frequency control Markov chain

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Hearing evaluation after successful myringoplasty

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Journal of Otology 2017年第4期12卷 192-197页

作者： Mohammed Radef Dawood Otolaryngology Department College of Medicine Mustansiriyah University Baghdad Iraq

Objectives: To assess postoperative hearing level, and factors that may have influence hearing improvement after ***: Twenty six cases of successful myringoplasty were included in this prospective study. Patient parameters including age, gender, size and site of the perforation, mastoid status, and etiology were evaluated. Hearing levels were assessed as the mean air conduction(AC), and airbone gap(ABG) at 500, 1000, and 2000 Hz, and their relation with aforementioned parameters were ***: The mean AC hearing gain was 22.373 dB and mean ABG reduction was 20.733 dB. The maximum AC hearing gain was 25.93 dB for subtotal perforation and 26.24 dB for big central perforation, and the maximum ABG reduction was 25.63 dB for subtotal perforation and 24.20 for big central perforation. Mean AC hearing gain was 23.01 dB, 22.72 dB, and 21.39 dB for 500, 1000, and 2000 Hz, respectively, and mean ABG reduction was 21.52 dB, 20.79 dB, and 19.86 dB for 500, 1000, and 2000 Hz, respectively. Patient age, gender, mastoid status and etiology did not seem to have any bearing on postoperative hearing ***: While patient parameters do not seem to correlate with hearing improvement following myringoplasty, the size and location of perforation appear to have an impact on postoperative hearing outcomes. Most hearing improvement appears to occur at 500 Hz.

关键词： Myringoplasty Hearing loss Tympanic membrane

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C-Reactive protein role in assessing COVID-19 deceased geriatrics and survivors of severe and critical illness

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World Journal of Clinical Cases 2022年第30期10卷 11210-11213页

作者： Wassan Nori Department of Obstetrics and Gynecology Mustansiriyah UniversityBaghdad 10052AL-SaydyiahIraq

Numerous risk variables,including age,medical co-morbidities,and deranged inflammatory response,lead to higher mortality in a senior population with coronavirus disease 2019.C-reactive protein(CRP),an acute phase inflammatory protein secreted by the liver,was tested in the elderly,showing a diagnostic and prognostic ***,recent research has shed light on new applications for CRP in *** was used as a follow-up marker and as a therapeutic *** and accurate identification of patients’ risks may mitigate the devastation of the invading virus in older cases and permit the implementation of a quick treatment plan for those most likely to deteriorate.

关键词： COVID-19 Geriatrics Deceased Severe infection C-reactive protein Age

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