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A hybrid machine-learning model for solar irradiance forecasting

Clean Energy 2024年第1期8卷 100-110页

作者： Ameera m.Almarzooqi m.h.r maalouf Tarek h.m.El-Fouly Vasileios E.Katzourakis mohamed S.El moursi Constantinos V.Chrysikopoulos Department of Industrial and Systems Engineering Khalifa UniversityAbu DhabiPO Box 127788UAE Electrical Engineering and Computer Science Department Khalifa University Abu DhabiUAE Department of Civil Infrastructure and Environmental Engineering Khalifa UniversityAbu DhabiPO Box 127788UAE School of Chemical and Environmental Engineering Technical University of CreteChaniaGreece

Nowcasting and forecasting solar irradiance are vital for the optimal prediction of grid-connected solar photovoltaic(PV)power *** plants face operational challenges and scheduling dispatch difficulties due to the fluctuating nature of their power *** the generation capacity within the electric grid increases,accurately predicting this output becomes increasingly essential,especially given the random and non-linear characteristics of solar irradiance under variable weather *** study presents a novel prediction method for solar irradiance,which is directly in correlation with PV power output,targeting both short-term and medium-term forecast *** proposed hybrid framework employs a fast trainable statistical learning technique based on the truncated-regularized kernel ridge regression *** proposed method excels in forecasting solar irradiance,especially during highly intermittent weather periods.A key strength of our model is the incorporation of multiple historical weather parameters as inputs to generate accurate predictions of future solar irradiance values in its scalable *** evaluated the performance of our model using data sets from both cloudy and sunny days in Seattle and medford,USA and compared it against three forecasting models:persistence,modified 24-hour persistence and least *** on three widely accepted statistical performance metrics(root mean squared error,mean absolute error and coefficient of determination),our hybrid model demonstrated superior predictive accuracy in varying weather conditions and forecast horizons.

关键词： solar power generation kernel ridge regression hybrid model forecasting

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Risk scores for allograft failure: Are they still useful in liver recipients from donation after circulatory death?

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World Journal of Transplantation 2024年第4期14卷 95-100页

作者： mohamed h mohamed Chairi mónica mogollón González Jennifer Triguero Cabrera Inmaculada Segura Jiménez maria T Villegas herrera Jesús m Villar del moral Transplant Surgery Division Department of SurgeryVirgen de las Nieves University HospitalGranada 18013AndalusiaSpain

BACKGROUND Liver grafts from donation after circulatory death(DCD)are associated with a higher risk of early graft dysfunction,determined by the warm ischemia and cold ischemia *** is essential to have precise criteria to identify this complication in order to guide therapeutic *** To validate different graft and recipient survival scores in patients undergoing liver transplantation(LT)with DCD *** A retrospective and observational unicentric study was conducted on 65 LT patients with grafts obtained from controlled DCD donors from November 2013 to November *** United Kingdom(UK)risk score,early allograft dysfunction(EAD)Olthoff score,and model for early allograft function(mEAF)score were used to evaluate the risk of graft and recipient survival *** survival analysis purposes,we used the Kaplan-meier method,and the differences between subgroups were compared using the log-rank(mantel-Cox)*** Sixty-five patients were included in the *** UK risk score did not demonstrate predictive capacity for recipient or graft ***,in donors aged over 70 years old(18.4%),it significantly predicted graft survival(Pmeier survival curves,graft survival rates at 6 months,2 years,and 5 years in the futility group dramatically decreased to 50%compared to the other groups(log-rank 8.806,Phe EAD Olthoff and mEAF scores did not demonstrate predictive capacity for recipient or graft *** on Kaplan-meier survival curves,patients with a mEAF score≥7 had a lower graft survival rate at 6 months,2 years,and 5 years compared to patients with a lower mEAF score(log-rank 4.667,Ph UK DCD risk score and mEAF score showed predictive capability for graft survival.

关键词： Liver transplantation Donation after circulatory death Early allograft dysfunction Risk scores Graft surviva

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The impact of chemotherapy-naïve open radical cystectomy delay and perioperative transfusion on the recurrence-free survival: A perioperative parameters-based nomogram

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Asian Journal of Urology 2024年第2期11卷 294-303页

作者： Ahmed m.h.rraz Ahmed Elkarta mohamed h.Zahran Ahmed mosbah Atallah A.Shaaban hassan Abol-Enein Urology and Nephrology Center Mansoura UniversityEgypt

Objective: To develop and internally validate a nomogram to predict recurrence-free survival (RFS) including the time to radical cystectomy (RC) and perioperative blood transfusion (PBT) as potential ***: Patients who underwent open RC and ileal conduit between January 1996 to December 2016 were split into developing (n=948) and validating (n=237) cohorts. The time to radical cystectomy (TTC) was defined as the interval between the onset of symptoms and RC. The regression coefficients of the independent predictors obtained by Cox regression were used to construct the nomogram. Discrimination, validation, and clinical usefulness in the validation cohort were assessed by the area under the curve, the calibration plot, and decision curve ***: In the developing dataset, the 1-, 5-, and 10-year RFS were 83.0%, 47.2%, and 44.4%, respectively. On multivariate analysis, independent predictors were TTC (hazards ratio [hR] 1.07, 95% confidence interval [CI] 1.05-1.08, phR 1.40, 95% CI 1.03-1.90, p=0.03;two or more units: hR 1.72, 95% CI 1.29-2.29, phydronephrosis (hR 1.54, 95% CI 1.21-1.97, pmous cell carcinoma (hR 0.60, 95% CI 0.45-0.81, p=0.001), pT3-T4 (hR 1.77, 95% CI 1.41-2.22, pm.h.node status (hR 1.53, 95% CI 1.21-1.95, pm.h.vascular invasion (hR 1.28, 95% CI 1.01-1.62, p=0.044). The areas under the curve in the validation dataset were 79.3%, 69.6%, and 76.2%, for 1-, 5-, and 10-year RFS, respectively. Calibration plots showed considerable correspondence between predicted and actual survival probabilities. The decision curve analysis revealed a better net benefit of the ***: A nomogram with good discrimination, validation, and clinical utility was constructed utilizing TTC and PBT in addition to standard pathological criteria.

关键词： Radicalcystectomy Blood transfusion Time to radical cystectomy Survival Nomogram

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Vanillylacetone attenuates cadmium chloride-induced hippocampal damage and memory loss through upregulation of nuclear factor erythroid 2-related factor 2 gene and protein expression

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Neural Regeneration Research 2024年第12期19卷 2750-2759页

作者： Fahaid h.A.L-hashem Salah O.Bashir Amal F.Dawood moutasem S.Aboonq Ismaeel Bin-Jaliah Abdulaiziz m.Al-Garni mohamed D.morsy Department of Physiology College of MedicineKing Khalid UniversityAbhaSaudi Arabia Department of Basic medical Sciences College of MedicinePrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh 11671Saudi Arabia Department of Physiology College of MedicineTaibah UniversityAl-Madinah Al-MunawwarahSaudi Arabia Department of medicine College of MedicineKing Khalid UniversityAbhaSaudi Arabia

memory loss and dementia are major public health concerns with a substantial economic *** stress has been shown to play a crucial role in the pathophysiology of hippocampal damage-induced memory *** investigate whether the antioxidant and anti-inflammatory compound vanillyla cetone(zingerone) can protect against hippocampal damage and memory loss induced by cadmium chloride(CdCl_(2)) administration in rats,we explo red the potential involvement of the nuclear factor erythroid 2-related factor 2(Nrf2) signaling pathway,which is known to modulate oxidative stress and *** healt hy male Wistar rats were divided into five groups:vehicle-treated(control),vanillylacetone,CdCl_(2),vanillylacetone+ CdCl_(2),vanillylacetone+ CdCl_(2)+ brusatol(a selective pharmacological N rf2inhibitor) *** effectively attenuated CdCl_(2)-induced damage in the dental gyrus of the hippocampus and improved the memory function assessed by the morris Water maze ***,vanillylacetone markedly decreased the hippocampal tissue levels of inflammatory biomarkers(interleukin-6,tumor necrosis factor-α,intracellular cell adhesive molecules) and apoptosis biomarkers(Bax and cleaved caspase-3).The control and CdCl_(2)-treated groups treated with va nillylacetone showed reduced generation of reactive oxygen species,decreased malondialdehyde levels,and increased superoxide dismutase and glutathione activities,along with significant elevation of nuclear Nrf2 mRNA and protein expression in hippocampal *** the protective effects of vanillylacetone we re substantially blocked by the co-administration of brusatol(a selective N rf2 inhibitor).Va nillylacetone mitigated hippocampal damage and memory loss induced by CdCl_(2),at least in part, by activating the nuclear transcription factor ***,vanillylacetone exerted its potent antioxidant and antiinflammatory actions.

关键词： hippocampus neuroprotective Nrf2 gene oxidative stress vanillylacetone

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Regulating microstructure and composition by carbonizing in-situ grown metal-organic frameworks on cotton fabrics for boosting electromagnetic wave absorption

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Nano Research 2024年第8期17卷 7290-7300页

作者： Jie Jin hongsen Long hu Liu Yan Guo Tiantian Bai Ben Bin Xu m.h.mmed A.Amin hua Qiu mohamed h.helal Chuntai Liu Changyu Shen Zeinhom m.El-Bahy Zhanhu Guo State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China China State Key Laboratory of Powder metallurgy Central South UniversityChangsha 410000China School of Electronic Engineering North China University of Water Resources and Electric PowerZhengzhou 450046China Complex Conditions of high-end Tire Technology Innovation Center Shuguang Rubber Industry Research&Design Institute Co.LtdGuilin 541004China Integrated Composites Lab Department of Mechanical and Civil EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Shaanxi Key Laboratory of macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Chemistry Faculty of Arts and ScienceNorthern Border UniversityRafha 73213Saudi Arabia Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt

high-temperature carbonized metal-organic frameworks(mOFs)derivatives have demonstrated their superiority for promising electromagnetic wave(EmW)absorbers,but they still suffer from limited EmW absorption capacity and narrow *** the advantage of microstructure and chemical composition regulation for the design of EmW absorber,hierarchical heterostructured moS_(2)/CoS_(2)-Co_(3)O_(4)@cabonized cotton fabric(CF)(mCC@CCF)is prepared by growing ZIF-67 mOFs onto CF surface,chemical etching,and *** from the dual loss mechanism of magnetic-dielectric multicomponent carbonized mOFs,chemical etching and carbonization process can effectively introduce abundant micro-gap structure that can result in better impedance matching and stronger absorption capacity via internal reflection,doped heteroatoms(mo,N,S)to supply additional dipolar polarization loss,and numerous heterointerfaces among moS_(2),CoS_(2),Co_(3)O_(4),and CCF that produce promoted conduction loss and interfacial polarization ***,a minimal reflection loss of−52.87 dB and a broadest effective absorption bandwidth of 6.88 Ghz were achieved via tunning the sample thickness and filler loading,showing excellent EmW absorption *** research is of great value for guiding the research on mOFs derivatives based EmW absorbing materials.

关键词： metal-organic frameworks hierarchical structure chemical etching sulfurization electromagnetic wave absorption

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microbial,immune and antioxidant responses of Nile tilapia with dietary nano-curcumin supplements under chronic low temperatures

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Aquaculture and Fisheries 2024年第1期9卷 57-65页

作者： m.h.mmed F.El Basuini mohamed A.A.Zaki Abdelaziz m.El-hais mohamed G.Elhanafy Emad h.El-Bilawy Amr I.Zaineldin mohamed F.A.Abdel-Aziz Ibrahim A.Abouelsaad Ibrahim TEl-Ratel Kumbukani mzengereza Ronick S.Shadrack Islam I.Teiba Faculty of Agriculture Tanta UniversityTanta31527Egypt King Salman International University South Sinai46618Egypt Faculty of Agriculture Alexandria UniversityAlexandria21526Egypt Animal health Research Institute(AhRI-DOKI) Agriculture Research CenterGiza12619Egypt Fish Rearing Lab. Aquaculture DivisionNational Institute of Oceanography and FisheriesAlexandria21556Egypt horticulture Department Faculty of AgricultureDamanhour UniversityDamanhur22511Egypt Department of Poultry Production Faculty of AgricultureDamietta UniversityDamietta34517Egypt Laboratory of Aquatic Animal Nutrition Faculty of FisheriesKagoshima UniversityKagoshima890-0065Japan Department of Aquatic and Fisheries Science Mzuzu UniversityMzuzuPrivate Bag 201Malawi Faculty of Aquaculture and marine Fisheries Arish UniversityArish45516Egypt

A 56-day feeding period was performed to investigate the possible impacts of dietary nano curcumin(0,50,100,150,and 200 ppm)on the growth,nutrient utilization,non-specific immune parameters,antioxidants in Nile tilapia under chronic low temperature(21.02±0.11◦C).Fishes(n=225;Initial weight=4.39±0.08 g/fish)were randomly stocked at 15 fish/tank for five experimental groups in *** low-temperature circumstances,dietary curcumin in nano form showed no notable alteration in growth variable,nutrient efficiency,digestive enzymes efficiency,biometric indices,survival rates,and hematological ***,the serum of fishes with nano curcumin diets under low-temperature stress displayed higher total protein as well as lower glucose,cortisol,and total cholesterol compared with the control ***,fish fed nano curcumin diets displayed higher lysozyme and bactericidal activities compared to the control group and the best performance was found at dietary nano curcumin level of≥100 ***,groups fed the basal diet demonstrated the poorest antioxidant capacity,and the best superoxide dismutase(SOD)and glutathione peroxidase(GPx)existed in fish with nano curcumin diets while the best catalase(CAT)efficiency occurred at higher nano curcumin levels≥100 *** addition,higher counts of intestinal microbiota in terms of total bacterial count(TBC),total yeast and molds count(TYmC),and coliform were noticed in fish consumed the basal diet compared to groups fed on nano curcumin *** conclusion,incorporating nano curcumin at a level of≥100 mg/kg diet(particularly at 150 mg/kg)improved a non-specific immune response,antioxidant,and healthier gastrointestinal microbiota in Nile tilapia under chronic low-temperature stress.

关键词： Nano curcumin Gastrointestinal microbiota Antioxidants Non-specific immune responses Temperature stress

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Analysis of cerium substitution in Co-Sr based spinel ferrites for high frequency application

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Journal of Rare Earths 2024年第9期42卷 1755-1763,I0005页

作者： Laura Khudaysh Inas A.Ahmed Syeda Rabia Ejaz Sajjad Ahmad Khan Yasir A.haleem mohamed m.Ibrahim m.h.ood Ali hafiz m.h.mmad Tahir Farid Zeinhom m.El-Bahy Department of Physics Faculty of ScienceJazan UniversityJazan45142Saudi Arabia Department of Chemistry Faculty of ScienceKing Khalid UniversityAbha62224Saudi Arabia Department of Physics The Government Sadiq College Women UniversityBahawalpur63100Pakistan Institute of Physics Khwaja Fareed University of Engineering and Information TechnologyRahim Yar Khan64200Pakistan Department of Chemistry College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia Centre of Excellence in Solid State Physics University of the PunjabLahorePakistan Department of Physics Government CollegeTaunsa Sharif32200Pakistan Department of Chemistry Faculty of ScienceAl-Azhar UniversityNasr City11884CairoEgypt

Spinel ferrites exhibit exceptional magnetic properties,making them a distinctive class of magnetic *** sol-gel technique was utilized for the synthesis of spinel ferrites with the chemical formula Co_(0.6)Sr_(0.4)Ce_(x)Fe_(2-x)O_(4). Following that,a comprehensive X-ray diffraction analysis unveiled the crystalline cubic structure of the synthesized *** the utilization of the m.h.loop approach,the ferromagnetic attributes of ferrites were assessed,and the assimilation of rare earth elements led to substantial enhancements in saturation magnetization,remanence,and *** ferrites with a high concentration of rare earth elements have improved direct current resistivity and activation *** logarithm of a material's resistance increased from 5.29 to 8.12 Ω·cm as cerium is *** a change in the amount of cerium,the activation energy goes up from 0.19 to *** changing the frequency from 5.5 to 9.5 Ghz,the dielectric characteristics were *** the frequency goes up,the dielectric constant goes *** ferrites that have been made better in every way can be used in high-frequency applications.

关键词： Activation energy DC electrical resistance Remanence magnetization Cobalt strontium spinel ferrites high frequency application Rare earths

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Co-doped Ni_(3)S_(2) nanosheet array: A high-efficiency electrocatalyst for alkaline seawater oxidation

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Nano Research 2024年第3期17卷 1050-1055页

作者： meng Yue Xun he Shengjun Sun Yuntong Sun mohamed S.hamdy mhamed Benaissa Alsamani A.m.Salih Jun Liu Xuping Sun College of Chemistry Chemical Engineering and Materials ScienceShandong Normal UniversityJinan 250014China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu 610054China Department of Chemistry College of ScienceKing Khalid UniversityP.O.Box 9004Abha 61413Saudi Arabia Department of Chemical Engineering College of EngineeringUniversity of Ha’ilP.O.Box 2440Ha’il 81441Saudi Arabia Department of Otolaryngology-head&Neck Surgery West China HospitalSichuan UniversityChengdu 610041China

Developing efficient and durable oxygen evolution reaction(OER)catalysts holds great promise for green hydrogen production via seawater electrolysis,but remains a ***,we report a Co-doped Ni_(3)S_(2) nanosheet array on Ni foam(Co-Ni_(3)S_(2)/NF)as a high-efficiency OER electrocatalyst for *** alkaline conditions,Co-Ni_(3)S_(2)/NF requires an overpotential of only 368 mV to drive 100 mA·cm^(–2),superior to Ni_(3)S_(2)/NF(385 mV).Besides,it exhibits at least 50-h continuous electrolysis.

关键词： Co doping Ni_(3)S_(2)nanosheet array oxygen evolution reaction seawater electrolysis electrocatalyst

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hydrometallurgy two stage process for preparation of (Nd,La,Ce)_(2)O_(3) from end-of-life Nimh batteries

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Journal of Rare Earths 2024年第2期42卷 415-423,I0007页

作者： Karim Tanji Khalid Ouzaouit mohamed Belghiti Isam Lamsayety hakim Faqir Intissar Benzakour Centre de recherche REmINEX-Groupe mANAGEm MarrakechMorocco

The present work aims to investigate the recovery of light rare earth elements(LREEs) oxides from end-oflife Nimh batteries using a hydro metallurgical process followed by effective *** operational leaching parameters such as phosphoric acid concentration,temperature,and the solid-liquid ratio were first optimized by Box-Behnken *** results reveal that under optimum conditions([h_(3)PO_(4)]=2 mol/L,T=80℃,and S/L=1:10 g/mL) the leaching efficiencies of Ni,Co reach 98.1% and99.3%.While La,Ce,and Nd elements remain in the leaching residue as(La,Ce,Nd)PO_(4) with yields of 98.2%,98.6%,and 99.6% for La,Ce,and Nd,***,the(La,Ce,Nd)PO_(4) is leached with hCl acid,then the rare earth oxalate was precipitated using oxalic acid at a ph of 1.8 and then the product was calcined at 800℃ for 2 h in order to synthesize the(Nd,La,Ce)_(2)O_(3).The analysis using scanning electron microscopy(SEm) coupled with energy dispersive X-ray spectroscopy(EDX) confirms the homogeneity of(Nd,La,Ce)_(2)O_(3) particles that have two morphologies,i.e.,flower and sticks with a particle size between 3and 6 μ*** unit cell parameters of(Nd,La,Ce)_(2)O_(3) were calculated after Rietveld refinement of the XRD patterns,in the space group of Fm-3m are a=b=c=0.57921 nm and the volume equal to 0.194322 nm^(3).

关键词： Nimh batteries hydrometallurgical process Leaching Phosphoric acid Box-Behnken Light rare earth oxides

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Intermittent fasting and the liver: Focus on the Ramadan model

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World Journal of hepatology 2024年第8期16卷 1070-1083页

作者： mohamed h Emara hanan Soliman Ebada m Said hassan Elbatae mostafa Elazab Shady Elhefnawy Tarik I Zaher Ahmed Abdel-Razik mohamed Elnadry Department of hepatology Gastroenterology and Infectious DiseasesKafrelsheikh UniversityKafr-Elshikh 33516Egypt Department of medicine Alyousif HospitalAlkhobar 34622Saudi Arabia Department of Tropical medicine and Infectious Diseases Tanta UniversityTanta 31512Egypt Department of hepatology Gastroenterology and Infectious DiseasesBenha UniversityBenha 13511Egypt Department of Tropical medicine Zagazig UniversityZagazig 44519Egypt Department of Tropical medicine Mansoura UniversityMansoura 35516Egypt Department of hepato-Gastroenterology and Infectious Diseases Al-Azhar UniversityCairo 11651Egypt

Intermittent fasting(IF)is an intervention that involves not only dietary modific-ations but also behavioral changes with the main core being a period of fasting alternating with a period of controlled *** duration of fasting differs from one regimen to *** fasting(RF)is a religious fasting for muslims,it lasts for only one month every one lunar *** this model of fasting,observers abstain from food and water for a period that extends from dawn to *** period of daily fasting is variable(12-18 hours)as Ramadan rotates in all seasons of the ***,longer duration of daily fasting is observed during the *** fact,RF is a peculiar type of *** is a dry IF as no water is allowed during the fasting hours,also there are no calorie restrictions during feeding hours,and the mealtime is exclusively *** three variables of the RF model are believed to have a variable impact on different liver *** was evaluated by different observational and interventional studies among patients with non-alcoholic fatty liver disease and it was associated with improve-ments in anthropometric measures,metabolic profile,and liver biochemistry regardless of the calorie restriction among lean and obese *** situation is rather different for patients with liver *** was associated with adverse events among patients with liver cirrhosis irrespective of the underlying etiology of *** patients developed new ascites,ascites were increased,had higher serum bilirubin levels after Ramadan,and frequently developed hepatic encephalopathy and acute upper gastrointestinal *** complications were higher among patients with Child class B and C cirrhosis,and some fatalities occurred due to *** transplant recipients as a special group of patients,are vulnerable to dehydration,fluctuation in blood immunosuppressive levels,likelihood of deterioration and hence observing RF without special precautions

关键词： Intermittent fasting Ramadan fasting Non-alcoholic fatty liver disease Liver cirrhosis Peptic ulcer Liver transplantation Gilbert syndrome

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