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Egyptian Consensus on Hyperkalemia Management: Lessons from Recent Evidences

International Journal of Clinical Medicine 2023年第9期14卷 402-418页

作者： magdy abdelhamid Tarek El Baz Mohamed H. Hafez May A. Hassaballa Hesham Elsayed Magdi El Sharkawy Ahmed F. ElKeraie Gamal Saadi Emad R. Issak Department of Cardiovascular Medicine Faculty of Medicine Kasr Al-Aini Cairo University Cairo Egypt Department of Nephrology Faculty of Medicine Al-Azhar University Cairo Egypt Department of Nephrology Faculty of Medicine Kasr Al-Aini Cairo University Cairo Egypt Department of Nephrology Faculty of Medicine Ain Shams University Cairo Egypt Department of Nephrology Faculty of Medicine Alexandria University Alexandria Egypt Department of Internal Medicine Faculty of Medicine Ain Shams University Cairo Egypt

Acute and chronic hyperkalemia is linked to higher hospitalization rates and mortality rates. It has a high prevalence among dialysis and non-dialysis patients in Egypt. The current therapy options are not that ideal. Moreover, we have a critical management paradox in cardiorenal diseases: Should we use the optimum dose of RAASi with its higher incidence of HK, or should we decrease the dose or even stop it with all its harmful hazards? Therefore, in light of the recent updates in different clinical practice guidelines, we, a country-specific (Egypt) task force, gathered to develop a clear, evidence-based, and multi-disciplinary consensus for managing HK. This manuscript illustrates the recommendations of this expert committee. The panel recommends new evidenced K binders like Sodium Zirconium Cyclosilicate (SZC) and patiromer to help manage HK in cardiorenal patients as stated by different international guidelines. In emergency settings, SZC can have a role in managing acute HK;however, it should be used in addition to other drugs like insulin and glucose. Local research studies on the utilization of these novel K binders are highly recommended. The utilization of these novel K binders as prophylaxis should be tested first in a well-designed randomized controlled trial.

关键词： Hyperkalemia Potassium Binders Sodium Zirconium Cyclosilicate Patiromer

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Ranking Evaluation and Aging Assessment of Pump Stations at Fayoum City，Egypt

Ranking Evaluation and Aging Assessment of Pump Stations at ...

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作者： Sultan Adel abdelhamid Kotb 扬州大学

学位级别：硕士

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The Upper Jurassic sediments,Marib-Shabwa Basin,Yemen:Lithofacies aspects and sequence stratigraphic analysis

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Energy Geoscience 2024年第1期5卷 342-357页

作者： Mohammed Albaroot Mohamed M.Elhossainy Nabil M.Al-Areeq Emad A.Abdullah abdelhamid M.Salman Department of Applied Geology Faculty of Science and EducationUniversity of Saba RegionMaribYemen Department of Geology Faculty of ScienceKafrelsheikh UniversityKafrelsheikh33516Egypt Department of Geology and Environment Faculty of Applied SciencesThamar UniversityYemen Department of Mineral Developing and Oil&Gas Engineering Academy of EngineeringPeoples’Friendship University of Russia(RUDN University)Moscow117198Russia Department of Geology Faculty of ScienceAssiut UniversityAssiut71516Egypt

The present study is devoted to understanding the evolution of the Upper Jurassic Sab'atayn Formation in the Marib-Shabwa Basin,Yemen,through a sequence stratigraphic analysis based on integrating datasets of sedimentology,seismic sections,and well *** Sab'atayn Formation(Tithonian age)is represented by a series of clastic and evaporites that were deposited under fluvio-deltaic to prodeltaic *** is divided into four members including Yah(at the base),upwards to Seen,Alif,and Safir at the *** third-order depositional sequences were determined for the Tithonian succession which were separated by three sequence *** sequences were classified into their systems tracts signifying several sedimentation patterns of progradational,aggradational,and retrogradational parasequence *** first depositional sequence corresponds to the early-middle Tithonian Yah and Seen units that can be classified into lowstand,transgressive,and highstand systems *** second sequence comprises the late Tithonian Alif unit that can be subdivided into transgressive and highstand systems *** sandy deposits of the Alif Member(highstand deposits)represent the most productive hydrocarbon reservoir in the *** Upper Jurassic sediments in the study area were resulted from a combination of eustatic and tectonic effects.

关键词： Sequence stratigraphy Sandstone reservoir Well logs Upper Jurassic Marib-Shabwa Basin Yemen

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Disorders of potassium homeostasis after kidney transplantation

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World Journal of Transplantation 2024年第3期14卷 40-51页

作者： abdelhamid Aboghanem G V Ramesh Prasad School of Medicine University of TorontoToronto M5C 2T2OntarioCanada Kidney Transplant Program St.Michael's HospitalToronto M5C 2T2OntarioCanada

Disturbances of potassium balance are often encountered when managing kidney transplant recipients(KTR).Both hyperkalemia and hypokalemia may present either as medical emergencies or chronic outpatient *** the high incidence of hyperkalemia and its potential life-threatening implications,consensus on its management in KTR is *** in KTR is also well-described,although it is given less attention by clinicians compared to *** article discusses the etiology,pathophysiology and management of both types of potassium disorders in *** any emergent situation has been corrected,treatment approaches include correcting insulin deficiency if present,adjusting non-immunosuppressive and immunosuppressive medications,elimi-nating or supplementing potassium as needed,and dietary *** commonly of multifactorial etiology,ascertaining the specific cause in a particular patient will help guide successful *** KTR through regular laboratory testing is essential to detect serious disturbances in potassium balance since patients are often asymptomatic.

关键词： Balance Dialysis Hyperkalemia Hypokalemia Kidney Metabolism Potassium

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Late chordee correction after tubularized incised plate repair for proximal hypospadias:An underreported problem

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UroPrecision 2024年第2期2卷 51-57页

作者： Amr abdelhamid Abouzeid Mohammad Seada Mohamed Waly Department of Pediatric Surgery Ain Shams University Faculty of MedicineCairoEgypt Department of Pediatric Surgery Benha Specialized Children HospitalBenhaEgypt

Background:Repair of proximal hypospadias remains a challenge with no consensus on the best surgical *** reports have shown recurrence of chordee after plate-preserving *** this report,we present our experience in managing cases who presented with persistent/recurrence of chordee after tubularized incised plate(TIP)repair for proximal ***:Between 2015 and 2023,the study included eight patients who presented with ventral penile curvature after previous hypospadias repair in infancy(TIP urethroplasty).Reoperation to correct persistent ventral curvature was performed several years after the primary TIP repair(3-15 years;mean 7.9 years;median 7.5 years).The reoperation was a two-stage procedure:the first stage comprised transection of the urethra and grafting(lower lip mucosal graft);the second stage(6 months later)was a Thiersch-Duplay ***:Complications included poor taking of the graft after the first stage in one case(12.5%),which was regrafted using buccal(cheek)*** after second stage included urethro-cutaneous fistulae in five(62.5%)that were successfully surgically treated at a later ***-up after second stage ranged between 6 months and 7 years(mean 2.4 years;median 1 year).Satisfaction with reoperation to correct penile curvature was noted by parents as well as older children(adolescents)who appreciated better cosmesis by increasing ventral penile length and improved ***:Preservation of the urethral plate in proximal hypospadias may result in shortened penile length,mostly on the ventral aspect.A two-stage reoperation to increase the length of the penile urethra can successfully reverse this complication.

关键词： complications hypospadias proximal severe ventral curvature

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Enhancing Canola Yield and Photosynthesis under Water Stress with Hydrogel Polymers

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1623-1645页

作者： Elham A.Badr Gehan Sh.Bakhoum Mervat Sh.Sadak Ibrahim Al-Ashkar Mohammad Sohidul Islam Ayman El Sabagh Magdi T.abdelhamid Field Crops Research Department National Research CentreCairo12622Egypt Botany Department National Research CentreCairo12622Egypt Plant Production Department College of Food and Agriculture SciencesKing Saud UniversityRiyadh12271Saudi Arabia Department of Agronomy Hajee Mohammad Danesh Science and Technology UniversityDinajpur5200Bangladesh Department of Field Crops Faculty of AgricultureSiirt UniversitySiirt56100Turkey Department of Agronomy Faculty of AgricultureKafrelsheikh UniversityKafrelsheikh33516Egypt Department of Research Centers Montana State UniversityBozemanMT 59717USA

While Egypt’s canola production per unit area has recently grown,productivity remains low,necessitating increased *** are water-absorbent polymer compounds that can optimize irrigation schedules by increasing the soil’s ability to retain ***,twoﬁeld experiments were conducted to examine hydrogel application to sandy soil on canola growth,biochemical aspects,yield,yield traits,and nutritional quality of yielded seeds grown under water deﬁcit stress *** experiments were conducted by arranging a split-plot layout in a randomized complete block design(RCBD)with three times replications of each *** water stress at 75%or 50%of crop evapotranspiration(ETc)lowered chlorophyll a,chlorophyll b,caro-tenoids,and total pigments content,indole-3-acetic acid,plant development,seed yield,and oil and total carbo-hydrates of seed yield,hydrogel treatment enhanced all of the traits mentioned ***,hydrogel enhanced to gather compatible solutes(proline,amino acids,total soluble sugars),phenolics content in leaves,seed protein,and crop water productivity,which increased while the plants were under water *** results revealed that the full irrigation(100%ETc)along with hydrogel compared to water-stressed(50%ETc)led to enhanced seed yield(kg ha^(-1)),Oil(%),and Total carbohydrates(%)of rapeseed by 57.1%,11.1%and 15.7%,***,under water-stressed plots with hydrogel exhibited enhancement by 10.0%,3.2%and 5.1%in seed yield(kg ha^(-1)),oil(%),and total carbohydrates(%)of rapeseed by 57.1%,11.1%and 15.7%,respec-tively compared to *** a result,the use of hydrogel polymer will be a viable and practical solution for increasing agricultural output under water deﬁcit stress situations.

关键词： Hydrogel oil osmolytes rapeseed yield water stress

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Study of Hygrothermal Behavior of Bio-Sourced Material Treated Ecologically for Improving Thermal Performance of Buildings

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Journal of Renewable Materials 2024年第5期12卷 1007-1027页

作者： Soumia Mounir Miloudia Slaoui Youssef Maaloufa Fatima Zohra El Wardi Yakubu Aminu Dodo Sara Ibn-Elhaj abdelhamid Khabbazi National School of Architecture Agadir New Complex Ibn Zohr AgadirHay dakhla80000Morocco EMDD CERNE2DUniversity Mohammed V in RabatEst SaléSaléMedinaMorocco Physics Department LPMAT LaboratoryFaculty of Sciences Ain ChockHassan II UniversityCasablancaMorocco Architectural Engineering Department College of Engineering Najran UniversityNajran66426Saudi Arabia The Centre of Scientific and Engineering Research Najran UniversityNajranSaudi Arabia

Creating sustainable cities is the only way to live in a clean environment,and this problem can be solved by using bio-sourced and recycled *** this purpose,the authors contribute to the valuation of sheep wool waste as an eco-friendly material to be used in *** paper investigates the thermal,hygrothermal,and biological aspects of sheep wool by testing a traditional *** biological method of aerobic mesophilicﬂora has been *** X was used to determine the chemical composition of the materials ***,thermal characterization has been *** thermal conductivity is above 0.046(W·m^(-1)·K^(-1))and the thermal diffusivity is 1.56.10^(-6) m^(2)·s^(-1).Besides,the energy efﬁciency of using sheep wool in buildings was ***,its humidity behavior was evaluated in different aspects in both winter and *** of biological analyses show the efﬁciency of the treatment by removing the majority of the microorgan-isms:the value of yeast and mildew was reduced from 38.10^(2) to 2.10^(2)(UFC·g^(-1)).In addition to that,sheep wool permits obtaining a low thermal transmittance on the scale of the walls and low cooling needs on the scale of the building with a gain of 45%and 52%,respectively.

关键词： Sustainability sheep wool biological treatment hygrothermal wool behavior hot wire method

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Childhood asthma biomarkers including zinc: An exploratory crosssectional study

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World Journal of Clinical Pediatrics 2024年第1期13卷 31-40页

作者： Hoda Atef Abdelsattar Ibrahim Mona Mohsen Boles Salep Aziz Hanna Dina Mahmoud Khaled Mohamed abdelhamid El-Khashab Pediatric Clinical Nutrition Unit Faculty of MedicineCairo UniversityCairo 12613Egypt Department of Pediatrics Faculty of MedicineCairo UniversityCairo 12613Egypt Department of Clinical Pathology Faculty of MedicineCairo UniversityCairo 12613Egypt

BACKGROUND Childhood bronchial asthma(BA)is a chronic inflammatory respiratory *** conditions,including zinc deficiency,can affect such allergic *** To outline the difference in serum zinc levels between asthmatic children and healthy *** A cross-sectional study was carried out at Children’s Hospital,Cairo University,investigating serum zinc levels in children with BA(n=40)and healthy children(n=21).Other markers included serum ferritin,iron,hemoglobin(Hb),and immunoglobulin E(IgE)*** t-tests and Mann-Whinny tests were used for *** Kruskal-Wallis test was applied to compare serum ferritin and IgE levels with regard to asthma ***'s rank correlation was performed to explore the relationship between serum ferritin levels and both iron and Hb levels in asthmatic *** Children with BA had higher levels of zinc,yet the difference was not significant(P=0.115).Serum ferritin and IgE levels were significantly higher in asthmatic children(P=0.006 and 0.001,respectively),yet their levels did not differ significantly by severity(P=0.623 and 0.126,respectively).There was a nonsignificant weak correlation between serum ferritin levels and both serum iron and Hb *** Serum zinc levels do not seem to differ between asthmatic children and healthy *** ferritin levels may be a marker of asthma *** IgE levels are not markers of asthma severity.

关键词： Children Asthma Zinc Ferritin

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Advances in Control Technologies for Wastewater Treatment Processes:Status, Challenges, and Perspectives

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IEEE/CAA Journal of Automatica Sinica 2019年第2期6卷 337-363页

作者： abdelhamid Iratni Ni-Bin Chang the Department of Electrical Engineering Faculty of Science and Technology University of Bordj Bou Arreridj IEEE the Civil Environmental and Construction Engineering Department University of Central Florida

This paper presents a thorough review of control technologies that have been applied to wastewater treatment processes in the environmental engineering regime in the past four decades. It aims to provide a comprehensive technological review for both water engineering professionals and control specialists, giving rise to a suite of up-to-date pathways to impact this field in light of the classified technology hubs. The assessment was conducted with respect to linear control, linearizing control,nonlinear control, and artificial intelligence-based control. The application domain of each technology hub was summarized into a set of comparative tables for a holistic assessment. Challenges and perspectives were offered to these field engineers to help orient their future endeavor.

关键词： Control technologies system engineering wastewater treatment

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Robust SVM-direct torque control of induction motor based on sliding mode controller and sliding mode observer

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Frontiers in Energy 2020年第4期14卷 836-849页

作者： Abdelkarim AMMAR Amor BOUREK abdelhamid BENAKCHA LGEB Laboratory Department of Electrical EngineeringUniversity of BiskraBiskraBP 145Algeria

This paper proposes a design of control and estimation strategy for induction motor based on the variable structure *** describes a coupling of sliding mode direct torque control(DTC)with sliding mode flux and speed *** algorithm uses direct torque control basics and the sliding mode approach.A robust electromagnetic torque and flux controllers are designed to overcome the conventional SVM-DTC draw・backs and to ensure fast response and full reference tracking with desired dynamic behavior and low ripple *** sliding mode controller is used to generate reference voltages in stationary frame and give them to the controlled motor after modulation by a space vector modulation(SVM)*** second aim of this paper is to design a sliding mode speed/flux observer which can improve the control performances by using a sensorless algorithm to get an accurate estimation,and consequently,increase the reliability of the system and decrease the cost of using *** effectiveness of the whole composed control algorithm is investigated in different robustness tests with simulation using Matlab/Simulink and verified by real time experimental implementation based on dS pace 1104 board.

关键词： induction motor direct torque control(DTC) space vector modulation(SVM) sliding mode control(SMC) sliding mode observer(SMO) dS1104

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