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Bietti crystalline dystrophy and choroidal neovascularization in childhood

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International Journal of Ophthalmology(English edition) 2019年第9期12卷 1514-1516页

作者： sabiha Gungor kobat Fatih Cem Gul Elif Yusufoglu Department of Ophthalmology Elazig Health Sciences UniversityElazig 23000Turkey

Dear Editor,I am *** Gungor kobat,from the Department of Ophthalmology,Elazig Health Sciences University,Elazig,Turkey.I am writing to present an exceedingly rare case of two siblings,one of whom developed Bietti crystalline dystrophy(BCD)with choroidal neovascularization at the age of 13 years,and the other has asymptomatic BCD at 8 years old.

关键词： RPE BCD Bietti crystalline dystrophy and choroidal neovascularization in childhood

The effect on wound healing of pazopanib and bevacizumab compared with corticosteroid in experimental glaucoma filtration surgery

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International Journal of Ophthalmology(English edition) 2018年第12期11卷 1909-1915页

作者： sabiha Gungor kobat Fatma Ulku Celiker Adile Ferda Dagli Kader Kasar Department of Ophthalmology Elazig Health Sciences University Department of Ophthalmology School of Medicine Firat University Department of Pathology School of Medicine Firat University Department of Ophthalmology Ordu State Hospital

AIM: To compare the effects of bevacizumab and pazopanib with corticosteroids on wound healing after trabeculectomy. METHODS: In the study, 35 New Zealand white rabbits were randomly divided into five groups. Apart from the first group, limbus-based trabeculectomy was performed for the eyes of rabbits. No postoperative treatment was administered for group Ⅰ. Topically administered saline, prednisolone acetate(1%), bevacizumab 5 mg/mL, pazopanib 5 mg/mL for group Ⅱ, Ⅲ, Ⅳ and Ⅴ respectively were applied for groups 6 h daily for 28 d. On day 28 of the experiment, eyes were enucleated and histologically and immunohistochemically ***: The fibroblast counts of groups Ⅳ and Ⅴ were determined to be lower than those of groups Ⅱ and Ⅲ(P0.05). The immunohistochemical staining intensity of fibroblast growth factor β(FGF-β) and vascular endothelial growth factor(VEGF) was determined to be lower in groups Ⅳ and Ⅴ than in groups Ⅱ and Ⅲ(P0.05). The platelet derived growth factor β(PDGF-β) intensity was lower in group Ⅴ than in groups Ⅱ, Ⅲ and Ⅳ(P0.05). CONCLUSION: Bevacizumab and pazopanib might be good alternatives of corticosteroid treatment on delaying wound healing in glaucoma surgery.

关键词： trabeculectomy wound healing corticosteroid bevacizumab pazopanib

Plasma and aqueous humor levels of adiponutrin and pannexin 1 in patients with and without diabetic retinopathy

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International Journal of Ophthalmology(English edition) 2022年第3期15卷 453-460页

作者： Fatih Cem Gül sabiha Güngör kobat FatihÇelik Süleyman Aydin Ramazan Fazil Akkoç Ophthalmology Clinic Elazığ City HospitalElazig 23200Turkey Department of Biochemistry Firat UniversityElazig 23119Turkey Department of Anatomy Firat UniversityElazig 23119Turkey

AIM: To evaluate plasma and aqueous levels of adiponutrin and pannexin 1 in patients with and without diabetic ***: The study included three age and gendermatched groups of 20 cataract patients with no diabetes or additional disease(Group C), 20 cataract patients with diabetes and no retinopathy(Group DM+C), and 20 cataract patients with diabetic retinopathy(Group DR+C).All the patients were examined with respect to body mass index(BMI), fasting plasma glucose, hemoglobin A1c(HbA1c), and lipid *** and intraocular lens(Phaco+IOL) implantation were performed to all patients in all the groups, and aqueous samples were taken during the *** plasma and aqueous adiponutrin and pannexin 1 levels were analyzed using enzyme-linked immunosorbent ***: A statistically significant difference was determined between the groups with respect to BMI, fasting plasma glucose, and HbA1c levels(P<0.05 for all parameters tested).The plasma adiponutrin levels of Group DR+C were statistically significantly lower than those of Group C and Group DM+C(P<0.001, P=0.004).No statistically significant difference was determined in the aqueous adiponutrin levels in three *** plasma pannexin 1 levels of Groups DM+C and DR+C were statistically significantly lower than those of Group C(both P=0.001).The aqueous pannexin 1 levels of Group DR+C were statistically significantly higher than those of Group C and Group DM+C(P=0.001, P<0.001).CONCLUSION: Adiponutrin and pannexin 1, which play an important role in the pathophysiology of diabetes and obesity, and have a regulatory role in hyperglycemia and insulin *** measurement of adiponutrin and pannexin 1 levels may support clinicians in determining the risk of DR development.

关键词： diabetes mellitus retinopathy adiponutrin pannexin 1

Ferroresonance Overvoltage Mitigation Using STATCOM for Grid-connected Wind Energy Conversion Systems

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Journal of Modern Power Systems and Clean Energy 2022年第2期10卷 407-415页

作者： Mohamed I.Mosaad Nehmdoh A.sabiha Yanbu Industrial College Yanbu A1 SinaiyahKingdom of Saudi Arabia the Electrical Engineering Department Faculty of EngineeringMenofia University32511 Shebin ElkomEgyptand she is on leave to work at the Electrical Engineering DepartmentCollege of EngineeringTaif University21974 TaifKingdom of Saudi Arabia

We present the ferroresonance overvoltage mitigation concerning the power systems of the grid-connectcd wind energy conversion systems(WECSs).WECS is considered based on a doubly-fed induction generator(DFIG).Ferroresonance overvoltage associated with a single-pole outage of the line breaker is mitigated by fast regulating the reactive power using the static compensator(STATCOM).STATCOM controller is introduced,in which t>\o incorporated proportional-integral(PI)controllers are optimally tuned using a modified flow-er pollination algorithm(MFPA)as an optimization *** show the capability of the proposed STATCOM controller in mitigating the ferroresonance overvoltage,two test cases are introduced,which are based on the interconnection status of the power transformer used with the grid-connected *** results show that the ferroresonance disturbance can occur for the power transformers installed in the wind farms although the transformer terminals are interconnected,and neither side of the transformer is ***,as a mitigation method of ferroresonance overvoltage,the proposed STATCOM controller succeeds in improving the system voltage profile and speed profile of the wind turbine as well as protecting the system components against the ferroresonance overvoltage.

关键词： Ferroresonance overvoltage doubly-fed induction generator(DFIG) static compensator(STATCOM) wind energy conversion system(WECS).

Bismuth based photoelectrodes for solar water splitting

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Journal of Energy Chemistry 2021年第10期30卷 517-530,I0014页

作者： sabiha Akter Monny Zhiliang Wang Muxina Konarova Lianzhou Wang Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaQLD 4072Australia

Photoelectrochemical water splitting is a sustainable path to generate valuable hydrogen using sunlight and water as the only *** significant efforts to date,it is still a challenge to achieve photoelectrode with superior performance and long-term *** bismuth-based semiconductor materials have demonstrated excellent visible light harvesting capability and suitable band edge for water ***,we summarized the latest studies conducted on bismuth-based photoelectrodes for photoelectrochemical water ***,photoelectrochemical properties of copper bismuth oxide(CuBi_(2)O_(4)),bismuth ferrites(BiFeO_(3),Bi_(2)Fe_(4)O_(9)),bismuth vanadate(BiVO_(4)),bismuth tungstate(Bi_(2)WO_(6)),bismuth molybdate(Bi_(2)MoO_(6))and bismuth oxyhalids(BiOX,X=I,Cl,Br)are *** to achieve high stability and photolectrochemical performance were discussed in the aspects of nanostructure formation,heterostructure assembly,practical defect engineering,preferential facet growth and oxygen evolution catalyst incorporation.

关键词： Photocathode Photoanode Bismuth Photoelectrochemical water splitting

Modeling Rogowski Coils for Monitoring Surge Arrester Discharge Currents

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Computer Systems Science & Engineering 2022年第8期42卷 439-449页

作者： Nehmdoh A.sabiha Hend I.Alkhammash Department of Electrical Engineering Faculty of EngineeringMenoufia University32511Shebin ElkomEgypt Department of Electrical Engineering College of EngineeringTaif University21944TaifSaudi Arabia

Rogowski coils(RCs)are widely used to measure power or high frequency currents based on their *** this paper,two types of RCs that are circular(traditional)and cylindrical shapes wound using wire covered by varnish are *** construction is carried out to be suitable for monitoring the discharge current of the surge arrester installed in the distribution *** high frequency RC modeling for both types considering transfer function is ***-integrating for both types is ***,the experimental tests using function generator for both coils are carried out to identify the parameters of the transfer function representing the introduced *** measured signals for current and induced voltages are denoised for the parameter identification *** denoised process is achieved using the MATLAB code‘wdenoise’while the parameters are estimated using the system identification *** of the proposed model is achieved using experimental results for the two *** sensitivity of the two coils is investigated based on the induced output *** application concerning the two coils for monitoring the discharge current of the surge arrester is *** results confirm the accuracy of the introduced RC model,as well as the performance of the cylindrical shape,is better than the traditional *** simulation is carried out using MATLAB and ATPDraw programs.

关键词： Rogowski coil surge arrester discharge current frequency response parameters dentification denoised signal

Classification of static spherically symmetric perfect fluid space-times via conformal vector fields in f(T)gravity

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Communications in Theoretical Physics 2022年第12期74卷 108-116页

作者： Fiaz Hussain Murtaza Ali Muhammad Ramzan sabiha Qazi Department of Mathematics The Islamia University of BahawalpurPakistan Faculty of Engineering Sciences GIK Institute of Engineering Sciences and TechnologyTopiSwabiKPKPakistan

In this paper,we classify static spherically symmetric(SS)perfect fluid space-times via conformal vector fields(CVFs)in f(T)*** this analysis,we first explore static SS solutions by solving the Einstein field equations in f(T)***,we implement a direct integration technique to classify the resulting *** the classification,there arose 20 *** each case thoroughly,we came to know that in three cases the space-times under consideration admit proper CVFs in f(T)*** one case,the space-time admits proper homothetic vector fields,whereas in the remaining 16 cases either the space-times become conformally flat or they admit Killing vector fields.

关键词： spherically symmetric space-times conformal vector fields f(T)gravity

Numerical Study of Natural Convection in an Inclined Porous Cavity

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Fluid Dynamics & Materials Processing 2022年第5期18卷 1389-1397页

作者： Saad Adjal sabiha Aklouche-Benouaguef Belkacem Zeghmati Laboratoire des Transports Polyphasiques et Milieux Poreux LTPMPALGER16111ALGERIE Laboratoire des Mathématiques et Physique des Systèmes LAMPSPerpignan66860France

Two-dimensional transient laminar natural convection in a square cavity containing a porous medium and inclined at an angle of 30°is investigated *** vertical walls are differentially heated,and the horizontal walls are *** effect of Rayleigh number on heat transfer and on the road to chaos is *** natural heat transfer and the Darcy Brinkman equations are solved by using a finite volume method and a Tri Diagonal Matrix Algorithm(TDMA).The results are obtained for a porosity equal to 0.45,a Darcy number and a Prandtl respectively equal to 10^(-3)and 0.71;they are analyzed in terms of streamlines,isotherms,phase portrait,attractors,and spectra amplitude as a function of the Rayleigh *** is found that,as Rayleigh number increases,the natural convection changes from a steady state to a time-periodic state and finally to a chaotic condition.

关键词： Natural convection porous medium finite volumes chaos attractors

Refining the Role of Simultaneous Liver Kidney Transplantation

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Journal of Clinical and Translational Hepatology 2018年第3期6卷 289-295页

作者： sabiha M.Hussain Kalathil K.Sureshkumar Division of Nephrology and Hypertension Department of MedicineAllegheny General HospitalAllegheny Health NetworkPittsburghPAUSA

Adoption of the model for end-stage liver disease score by Organ Procurement and Transplant Network(OPTN)deceased donor liver allocation policy in 2002 has led to an increase in the number of simultaneous liver kidney(SLK)*** kidney function recovery following liver transplantation is difficult to predict,al ocation of the kidney for SLK trans-plantation thus far has not been based on much rationale and *** of OPTN policy towards SLK organ allocation has resulted in great variations among transplant centers regarding SLK *** use of kidneys towards SLK transplantation diverts deceased donor kidneys away from candidates awaiting kidney-alone *** OPTN/United Network of Organ Sharing has imple-mented medical eligibility criteria for adult SLK transplantation which also includes a concept of safety *** of the new policy is a move in a positive direction,providing consistency in our practice and evidence-based guidelines in selecting candidates for SLK *** policy needs to be monitored prospectively and modified based on new data that wil emerge over *** review outlines the literature on SLK transplantation and efforts towards developing rational policy on SLK organ allocation.

关键词： Liver kidney transplantation Graft survival MELD score Creatinine GFR