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The impact of alpha-fetoprotein(AFP),child-turcotte-pugh(CTP)s..re and dis..s..s..ging on the s..vival of hepatocellular carcinoma(HCC)patients.. retros..ctive cohort from s..gle oncology center

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Oncology Res..rch 2025年第1期33卷 149-160页

作者： NAs..R MULLA YOUs.. KATIB As.. M.ALMUGHAMs..DUAA s..LKHAYAT mohamed MOs..D s..IR T.ALFOTIH RAWAN ALAOFI Department of Internal Medicine Faculty of MedicineTaibah UniversityMadinah42278Saudi Arabia Department of Radiology Faculty of MedicineTaibah UniversityMadinah42278Saudi Arabia Department of s..gery Faculty of MedicineTaibah UniversityMadinah42278Saudi Arabia Department of Endemic and Infectious..is..s.. Suez Canal UniversityIsmailia41522Egypt King s..man bin Abdulaziz Medical City Madinah42311Saudi Arabia Prince Mohammed Bin Abdulaziz Hos..tal Madinah41511Saudi Arabia

Background:Hepatocellular carcinoma(HCC)is..he mos..common caus..of cancer-related death in s..di *** s..dy aimed to inves..gate the patterns..f HCC and the effect of TNM s..ging,Alfa-fetoprotein(AFP),and Child-Turcotte Pugh(CTP)on patients..verall s..vival(Os..Methods.. retros..ctive analys.. was..onducted on 43 HCC patients..t a s..gle oncology center in s..di Arabia from 2015 to *** patients..ad to fulfill one of the following criteria:(a)a liver les..n reported as..efinitive HCC on dynamic imaging and/or(b)a biops..confirmed ***:The mean patient age of all HCC cas.. was..6.8 with a male-to-female ratio of 3.3:*** patients..ere s..atified into two groups..iral HCC(n=22,51%)and non-viral HCC(n=21,49%).Among viral-HCC patients..5%were due to HBV and 45%due to *** was..iagnos.. in 79%of *** and s.. did not s..nificantly s..tis..cally differ in Os..mong viral and non-viral HCC patients..-value>0.05).About 65%of patients..ad tumor s..e>5 cm during the diagnos..,with a s..nificant s..tis..cal difference in Os..-value=0.027).AFP was..00 ng/ml in 45%of the *** was.. s..tis..cally s..nificant difference in the Os..n terms..f AFP levels..-value=0.021).A s..tis..cally s..nificant difference was..ls..obs..ved between the CTP s..re and Os..-value=0.02).CTP clas..B had the longes..*** was..he mos..common treatment provided to HCC patients..ollowed by s..afenib *** was.. s..nificant s..tis..cal difference in Os..mong viral and non-viral HCC patients..-value=0.008).Conclus..ns..he mos..common predictors..or Os..ere the underlying caus..of HCC,AFP,and tumor *** having non-viral etiology,a tumor s..e>5 cm,an AFP>400 ng/mL,and a CTP s..re clas..C were all negatively as..ciated with Os.

关键词： Hepatocellular carcinoma Pattern Alpha-fetoprotein(AFP) Child-turcotte-pugh Progres..on free s..vival

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Friction and wear of s..d-contaminated lubricated s..ding

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Friction 2018年第4期6卷 457-463页

作者： mohamed Ahmed ramadan Faculty of Engineering at Helwan Helwan University

This..aper reports.. tes..inves..gation of friction and wear res..ns.. from s..d contaminated lubricated s..ding. The influence of s..d contaminants..n wear and friction is..haracterized. Analys.. are completed utilizing s..ments..f pis..n ring s..ding agains..the cylinder liner. Paraffin oil, with and without s..d contaminants..is..tilized. The effects..f the concentration and particle s..e of s..d are examined. Bas.. on the obs..vations..n the pres..t work, we found that friction and wear increas..with s..d concentration in the lube. s..id propos..s..ught to be cons..ered, in order to enlighten the general population on the importance of changing a car engine's..il filter regularly.

关键词： s..d contamination lubrication oil abras..e wear lubricated s..ding

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s..uctural, electronic, and optical s..dies..f chalcogenides..tannite Cu2Cds..4（X=s..s.. and Te）: ins..hts..rom the DFT s..dy

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Optoelectronics..etters 2025年第2期21卷 69-76页

作者： Jamal GUERROUM mohamed AL-HATTAB Lhoucine MOUDOU Khalid RAHMANI Yous..f LACHTIOUI Omar BAJJOU Laboratory of Engineering in Chemis..y and Phys..s..f Matter Faculty of Sciences and Technics Sultan Moulay Slimane University Ecole Normale s..érieure Mohammed V University in Rabat College of Graduate s..dies University of South Africa

In this..aper,we have calculated the s..uctural,electronic,and optical properties..f chalcogenide s..nnite Cu2Cds..4（X=s..e,Te） *** calculations..re bas.. on the dens..y functional theory （DFT） method and are performed us..g the Cambridge s..uential total energy package （CAs..P） code included in the Biovia Material s..dio 20 *** optical properties..ave been s..died in a domain that extends..nergetically from 10 meV to 40 *** res..ts..how that Cu2Cds..4（X=s..e,Te） s..nnite exhibits..bs..ption in the vis..le region,the refractive index decreas.. with increas..g energy,and the refractive index values..re n=3.2,3.73 and 3.75 for Cu2Cds..4,Cu2Cds..e4and Cu2Cds..e4,*** s..w als..high conductivity,which implies..hat this..aterial is..romis..g for s..ar *** res..ts..rgue in favor of the us..of thes..materials..n various..otential *** dens..y of s..te,band s..uctures..nd s..uctural properties..f Cu2Cds..4（X=s..e,and Te） s..nnite are als..s..died in this..ork.

关键词： Refractive index

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Comparative s..dy of Different Decoupling s..emes..or TITO Binary Dis..llation Column via PI Controller

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IEEE/CAA Journal of Automatica s..ica 2018年第4期5卷 869-877页

作者： mohamed Hamdy Abdalhady ramadan Belal Abozalam Indus..ial Electronics..nd Control Engineering Department Faculty of Electronic EngineeringMenoufia UniversityMenouf-23952Egypt Badr Petroleum Company(BAPETCO) CairoEgypt

This..aper pres..ts.. comparative s..dy of different decoupling control s..emes..or a two-input, two-output(TITO) binary dis..llation column via proportional-integral(PI)controller. The key idea behind this..aper is..es..ning two novel fuzzy decoupling s..emes..hat depend on human knowledge,ins..ad of the s..tem mathematical model us.. in conventional decoupling s..emes..Bas.. on conventional and inverted decoupling s..emes..fuzzy and inverted fuzzy decoupling s..emes..re developed. The control effect is..ompared us..g s..ulation res..ts..or the propos.. two s..emes..ith conventional decoupling and inverted decoupling. The propos.. fuzzy decoupling s..emes..re eas..to realize and s..ple to des..n, bes..es..hey have a good decoupling capability. Two methods..re us.. to prove as..ptotic s..bility of each loop and the entire clos..-loop s..tem by applying the propos.. fuzzy decoupling-bas.. PI *** Wood and Berry model of a binary dis..llation column is..s.. to illus..ate the applicability of the propos.. s..emes.

关键词： Binary dis..llation column conventional decoupling fuzzy decoupling proportional-integral(PI) controller s..bility analys..

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Dynamic Interaction Analys.. of Coupled Axial-Tors..nal-Lateral Mechanical Vibrations..n Rotary Drilling s..tems

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s..uctural Durability & Health Monitoring 2025年第1期19卷 77-103页

作者： s..rina Meddah s.. Ahmed Tadjer Abdelhakim Idir Kong Fah Tee mohamed Zinelabidine Doghmane Madjid Kidouche Applied Automation Laboratory Faculty of Hydrocarbons and ChemistryUniversity of BoumerdesBoumerdes35000Algeria Ins..tute of Electrical and Electronic Engineering(IGEE) University of BoumerdesBoumerdes35000Algeria Laboratory of the Electrification of Indus..ial Enterpris.. University of BoumerdesBoumerdes35000Algeria Electrical Engineering Department Mohamed Boudiaf University of M’silaM’sila28000Algeria Department of Civil and Environmental Engineering King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Interdis..plinary Res..rch Center for Cons..uction and Building Materials King Fahd University of Petroleum&Minerals(KFUPM)Dhahran31261Saudi Arabia

Maintaining the integrity and longevity of s..uctures..s..s..ntial in many indus..ies..uch as..eros..ce,nuclear,and *** achieve the cos..effectivenes..of large-s..le s..tems..n petroleum drilling,a s..ong emphas.. on s..uctural durability and monitoring is..** s..dy focus.. on the mechanical vibrations..hat occur in rotary drilling s..tems..hich have a s..s..ntial impact on the s..uctural integrity of drilling *** s..dy s..ciﬁcally inves..gates..xial,tors..nal,and lateral vibrations..hich might lead to negative cons..uences..uch as..it-bounce,chaotic whirling,and high-frequency *** events..ot only hinder the efﬁciency of drilling but als..lead to exhaus..on and harm to the s..tem’s..omponents..ince they are difﬁcult to be detected and controlled in real *** s..dy inves..gates..he dynamic interactions..f thes..vibrations..peciﬁcally in their high-frequency modes..s..gﬁeld data obtained from meas..ement while ***ﬁndings..ave demons..ated the effect of s..ong coupling between the high-frequency modes..f thes..vibrations..n drilling s..-tem *** obtained res..ts..ighlight the importance of cons..ering the interconnected impacts..f thes..vibrations..hen des..ning and implementing robus..control ***,integrating thes..compo-nents..an increas..the durability of drill bits..nd drill s..ings..s..ell as..mprove the ability to monitor and detect ***,by exploiting thes..ndings..he as..s..ent of s..uctural res..ience in rotary drilling s..tems..an be ***,the s..dy demons..ates..he capacity of s..uctural health monitoring to improve the quality,dependability,and efﬁciency of rotary drilling s..tems..n the petroleum indus..y.

关键词： Rotary drilling s..tems mechanical vibrations s..uctural durability dynamic interaction analys.. ﬁeld data analys..

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Photovoltaic Models..arameters..s..mation Bas.. on Weighted Mean of Vectors

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Computers..Materials.. Continua 2023年第3期74卷 5229-5250页

作者： mohamed Elnagi s..ah Kamel Abdelhady ramadan mohamed F.Elnaggar Department of Electrical Engineering Faculty of EngineeringAl-Azhar UniversityQena83518Egypt Department of Electrical Engineering Faculty of EngineeringAswan UniversityAswan81542Egypt Department of Electrical Engineering College of EngineeringPrince Sattam Bin Abdulaziz UniversityAl-Kharj11942Saudi Arabia Department of Electrical Power and Machines..ngineering Faculty of EngineeringHelwan UniversityHelwan11795Egypt

Renewable energy s..rces..re gaining popularity,particularly photovoltaic energy as.. clean energy *** is..vident in the advancement of s..entific res..rch aimed at improving s..ar cell *** to the non-linear nature of the photovoltaic cell,modeling s..ar cells..nd extracting their parameters..s..ne of the mos..important challenges..n this..** a res..t,the us..of optimization algorithms..o s..ve this..roblem is..xpanding and evolving at a rapid *** this..aper,a weIghted meaN oF vectOrs..lgorithm(INFO)that calculates..he weighted mean for a s.. of vectors..n the s..rch s..ce has..een applied to es..mate the parameters..f s..ar cells..n an efficient and precis..*** each generation,the INFO utilizes..hree operations..o update the vectors..ocations..pdating rules..ector merging,and local *** INFO is..pplied to es..mate the parameters..f s..tic models..uch as..ingle and double diodes..s..ell as..ynamic models..uch as..ntegral and fractional *** outcomes..f all applications..re examined and compared to s..eral recent *** well as..he res..ts..re evaluated through s..tis..cal *** res..ts..nalyzed s..ported the propos.. algorithm’s..fficiency,accuracy,and durability when compared to recent optimization algorithms.

关键词： Photovoltaic(PV)modules weIghted meaN oF vectOrs..lgorithm(INFO) renewable energy s..tic PV models dynamic PV models s..ar energy

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The gravity impact in a rotating micropolar thermoelas..c medium with microtemperatures

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Journal of Ocean Engineering and s..ence 2018年第4期3卷 325-333页

作者： mohamed I.M.Hilal ramadan s..antawi mohamed I.A.Othman Department of Mathematics Faculty of ScienceP.O.Box 44519Zagazig UniversityZagazigEgypt Department of Bas.. s..ence Faculty of EngineeringSinai UniversityAl-ArishEgypt

A model of micropolar thermoelas..c medium with microtemperatures..nfluenced by the gravitational field is..** medium rotates..ith a uniform angular *** phys..al quantities..re obtained analytically and repres..ted gr... 详细信息

关键词： Gravity Micropolar thermoelas..city Microtemperatures Rotation

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Characteris..cs..ompos..ion and functional properties..f s..ds..eed cake and s..d oil from different Bras..ca carinata genotypes

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Food Bios..ence 2022年第4期48卷 300-309页

作者： Adel Abdelrazek Abdelazim Mohdaly mohamed Fawzy ramadan Food s..ence and Technology Department Faculty of AgricultureFayoum UniversityEl-FayoumP.O.63514Egypt Agricultural Biochemis..y Department Faculty of AgricultureZagazig UniversityZagazigP.O.44519Egypt Deans..p of s..entific Res..rch Umm Al-Qura UniversityMakkahP.O.715Saudi Arabia

Carinata(Bras..ca carinata)is..n oils..d crop with potential in biofuel production and lives..ck *** pres..t res..rch was..onducted to evaluate twenty Bras..ca carinata genotypes..s.. in breeding programs..o develop commercial production of Bras..ca carinata with low levels..f erucic *** following characters..ere evaluated:oil contents..atty acid profiles..hys..ochemical characteris..cs..f oils..s..ell as..he content of protein,total phenolic compounds..nd the antiradical activity of Bras..ca carinata defatted s..d *** oil analys.. indicated des..able quality,including low percentages..f free fatty acids..FA),high amounts..f uns..onifiable matter(Us..,and low values..or primary and s..ondary oxidation products..hat were under the regulated *** oil contents..f the s..ples..aried between 27.0 and 39.2%.A total of 16 fatty acid compos..ions..ere identified in different *** compared to the commercial canola oil,it was..bs..ved that Bras..ca carinata 14C genotype had quite s..ilar fatty acid *** phenolics..nd protein contents..f Bras..ca carinata cake extract varied from 43.2 to 132 mg/100 g and from 24.6 to 35.4%,*** can be noted that Bras..ca carinata genotype 14C with low erucic acid(EA)and high oleic acid contents..ons..er as..n edible oil *** EA,the genotypes..C,10C,and 17C with low EA content could be recommended as.. bas.. for further breeding *** carinata cake from different genotypes..ight be a valuable s..rce of natural antioxidants..ue to their antioxidant capacities..nd free radical s..venging potential.

关键词： Bras..caceae Cruciferae Canola Phys..ochemical properties Erucic acid Phenolics Antioxidants s..d cake Breeding

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s..ar thermochemical reactions..:s..thes.. of 2-aminothiophenes..ia Gewald reaction induced by s..ar thermal energy

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Chines..Chemical Letters 2008年第7期19卷 788-790页

作者： ramadan Ahmed Mekheimer mohamed Abdallah Ameen Kamal Us.. s..ek Chemis..y Department Faculty of ScienceEl-Minia UniversityEl-Minia 61519Egypt

Green conditions..ave been developed for the s..thes.. of s..s..tuted 2-aminothiophenes..mploying multicomponent reactions..f a ketone with active methylene nitrile and elemental s..phur induced by free s..ar thermal ... 详细信息

关键词： 2-Aminothiophenes Gewald reaction s..ar thermal energy

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An early dis..arge approach for managing hos..tal capacity

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International Journal of Modeling, s..ulation, and s..entific Computing 2017年第1期8卷 83-95页

作者： Is..a mohamed Ibrahim El-Henawy ramadan Zean El-Din Department of Computing and Information Zagazig Univers..y 44519 ZagazigEgypt Ins..tute of s..tis..cal s..dies..nd Res..rch Cairo Univers..y 12613 GizaEgypt

The Kidney and Oncology Departments..t Zagazig Univers..y Hos..tal are s..fering from increas.. demand and limited *** patients..ho find all beds..ccupied are s..ply turned away,i.e.,no waiting is..** paper inves..gates..he impact of an early dis..arge approach that can be applied to patients..hat have been s..eduled to dis..arge within 5 h.A dis..ete event s..ulation(DEs..odel is..uilt us..g empirical dis..ibutions..as.. on real *** model has..een validated agains..real data and the res..ts..ave s..wn that the propos.. early dis..arge approach can reduce the number of turned away patients..y 10%in the Kidney Department,equivalent to 182 patients..nnually and by 11%in the Oncology Department,equivalent to 150 patients..nnually.

关键词： s..ulation optimization dis..ete event s..ulation

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