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Hepatobiliary & Pancreatic Diseases International 2018年第1期17卷 59-63页

作者： Ayman El Nakeeb ahmed El Gawalby Mahmoud A.Ali ahmed Shehta Hosam Hamed Mohamed El Refea ahmed moneer ahmed Abd El Rafee Gastroenterology Surgical Center Mansoura University

Background: The efficacy of octreotide to prevent postoperative pancreatic fistula(POPF) of pancreaticoduodenectomy(PD) is still controversial. This study aimed to evaluate the effect of postoperative use of octreotide on the outcomes after ***: This is a prospective randomized controlled trial for postoperative use of octreotide in patients undergoing PD. Patients with soft pancreas and pancreatic duct < 3 mm were randomized to 2 *** I did not receive postoperative octreotide. Group II received postoperative octreotide. The primary end of the study is to compare the rate of ***: A total of 104 patients were included in the study and were divided into two randomized *** were no significant difference in overall complications and its severity. POPF occurred in 11 patients(21.2%) in group I and 10(19.2%) in group II, without statistical significance(P = 0.807). Also, there was no significant differences between both groups regarding the incidence of biliary leakage(P = 0.083), delayed gastric emptying(P = 0.472), and early postoperative mortality(P = 0.727).Conclusions: Octreotide did not reduce postoperative morbidities, reoperation and mortality rate. Also, it did not affect the incidence of POPF and its clinically relevant variants.

关键词： Pancreaticoduodenectomy Postoperative pancreatic fistula Octreotide Periampullary tumor

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Impact of cirrhosis on surgical outcome after pancreaticoduodenectomy

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World Journal of Gastroenterology 2013年第41期19卷 7129-7137页

作者： Ayman El Nakeeb Ahmad M Sultan Tarek Salah Mohamed El Hemaly Emad Hamdy Ali Salem ahmed moneer Rami Said ahmed AbuEleneen Mostafa Abu Zeid Talaat Abdallah Mohamed Abdel Wahab Gastroenterology surgical center Mansoura UniversityMansoura 35516Egypt

AIM:To elucidate surgical outcomes of pancreaticoduodenectomy(PD)in patients with liver ***:We studied retrospectively all patients who underwent PD in our centre between January 2002and December *** A comprised patients with cirrhotic livers,and Group B comprised patients with non-cirrhotic *** cirrhotic patients had ChildPugh classes A and B(patient’s score less than 8).Preoperative demographic data,intra-operative data and postoperative details were *** primary outcome measure was hospital mortality *** outcomes analysed included duration of the operation,postoperative hospital stay,postoperative morbidity and survival ***:Only 67/442 patients(15.2%)had cirrhotic *** blood loss and blood transfusion were significantly higher in group A(P=0.0001).The mean surgical time in group A was significantly longer than that in group B(P=0.0001).Wound complications(P=0.02),internal haemorrhage(P=0.05),pancreatic fistula(P=0.02)and hospital mortality(P=0.0001)were significantly higher in the cirrhotic *** stay was significantly longer in group A(P=0.03).The median survival was 19 mo in group A and 24 mo in group *** hypertension(PHT)was present in 16/67 cases of cirrhosis(23.9%).The intraoperative blood loss and blood transfusion were significantly higher in patients with PHT(P=0.001).Postoperative morbidity(0.07)and hospital mortality(P=0.007)were higher in cirrhotic patients with ***:Patients with periampullary tumours and well-compensated chronic liver disease should be routinely considered for PD at high volume centres with available expertise to manage liver *** is associated with an increased risk of postoperative morbidity in patients with liver cirrhosis;therefore,it is only recommended in patients with Child A cirrhosis without portal hypertension.

关键词： Periampullary tumour Liver cirrhosis Portal hypertension Pancreaticoduodenectomy

Supersymmetric hybrid inflation in light of CMB experiments and swampland conjectures

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Chinese Physics C 2025年第1期49卷 114-126页

作者： Waqas ahmed Shabbar Raza Center for Fundamental Physics and School of Mathematics and Physics Hubei Polytechnic UniversityHuangshi 435003China Department of Physics Federal Urdu University of ArtsScience and TechnologyKarachi 75300Pakistan

In this study,we revisit supersymmetric(SUSY)hybrid inflation within the context of considering the latest Cosmic Microwave Background(CMB)observations and swampland *** demonstrate that SUSY hybrid inflation remains consistent with Planck 2018 data when radiative,soft mass,and supergravity(SUGRA)corrections are applied to the scalar *** is commonly perceived that SUSY hybrid inflation with a minimal Kahler potential results in a gauge symmetry breaking scale M of O(10^(15))GeV,leading to issues with the proton decay *** our analysis,we introduce a novel parameter space that alleviates the proton decay issue by achieving M~10^(16) GeV with M_(S)^(2)*** scenario necessitates a soft SUSY breaking scale|M_(S)|■10^(6) ***,we find that the tensor-to-scalar ratio r spans from 10^(-16) to 10^(-6),indicating a very small *** small ratio allows the modified swampland criteria to hold,although satisfying the trans-Planckian censorship conjecture(TCC)remains *** address this,we also explo non-minimal Kahler *** fixing the spectral index at n_(S)=0.9665,consistent with the central value of Planck 2018 data,and setting M=2×10^(16)GeV,we present our *** show that the canonical measure of primordial gravitational waves,r,for M_(S)=1 TeV,m_(3/2)=1 TeV,and k_(S)<0 for N=1 and N=2,ranges from 10^(-5) to 0.01,rendering it detectable by Planck and upcoming experiments such as LiteBIRD,Simons Observatory,PRISM,PIXIE,CORE,CMB-S4,and ***,we outline the parametric space and provide benchmark points for the non-minimal case to ensure compatibility with both the modified swampland conjecture and TCC.

关键词： suppersymmetry hybrid inflation swampland conjectures

Generalized uncertainty principle from the regularized self-energy

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Communications in Theoretical Physics 2025年第1期77卷 92-100页

作者： Kimet Jusufi ahmed Farag Ali Physics Department State University of TetovoIlinden Street nn1200TetovoNorth Macedonia Essex County College 303 University AveNewarkNJ 07102United States America Department of Physics Faculty of ScienceBenha UniversityBenha13518Egypt

We use the Schrödinger–Newton equation to calculate the regularized self-energy of a particle using a regular self-gravitational and electrostatic potential derived in string *** particle mass M is no longer concentrated into a point but is diluted and described by a quantum-corrected smeared energy density resulting in corrections to the energy of the particle,which is interpreted as a regularized *** extend our results and find corrections to the relativistic particles using the Klein–Gordon,Proca and Dirac *** important finding is that we extract a form of the generalized uncertainty principle(GUP)from the corrected *** form of the GUP is shown to depend on the nature of particles;namely,for bosons(spin 0 and spin 1)we obtain a quadratic form of the GUP,while for fermions(spin 1/2)we obtain a linear *** correlation we find between spin and GUP may offer insights for investigating quantum gravity.

关键词： generalized uncertainty principle T-duality regularized self-energy

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Nanosecond pulse and dual-wavelength Q-switched 1.5 μm fiber laser using MAX phase Cr_(2)TiAlC_(2) saturable absorber

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Optoelectronics Letters 2025年第1期21卷 7-12页

作者： ahmed Shakir AL-HITI Hiba HASSAN Department of Electrical Engineering Faculty of EngineeringUniversity of AnbarAnbar 31001Iraq Department of Laser and Optoelectronics Engineering University of Technology-IraqBaghdadIraq

We demonstrated a new type of MAX phase material,chromium titanium aluminum carbide(Cr_(2)TiAlC_(2)) polymer film,to generate a passively Q-switched erbium-doped fiber laser(EDFL).The film thickness was measured to be around 45 μm,which was fabricated using the embedding method with polyvinyl alcohol(PVA) polymer as *** saturable absorber(SA) film demonstrates a dual-wavelength passively Q-switched EDFL which operates at 1 531 nm and 1 560.19 nm,*** Q-switching pulse duration could be varied from 2.46 μs to 770 ns,while the repetition rate varied from 92.76 kHz to 106.6 kHz with an increasing input pumping range from 154 mW to 300 *** maximum output power and pulse energy of 15.05 mW and 141.18 nJ were obtained at the maximum input power of 300 mW,respectively.

关键词： switched pulse fiber

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Iron-promoted zirconia-alumina supported Ni catalyst for highly efficient and cost-effective hydrogen production via dry reforming of methane

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Journal of Environmental Sciences 2025年第2期148卷 274-282页

作者： ahmed S.Al-Fatesh Naitik Patel Vijay Kumar Srivastava ahmed I.Osman David W.Rooney Anis H.Fakeeha ahmed E.Abasaeed Mohammed F.Alotibi Rawesh Kumar Chemical Engineering Department College of EngineeringKing Saud UniversityP.O.Box 800Riyadh 11421Saudi Arabia Department of Chemistry Indus UniversityAhmedabadGujarat 382115India School of Chemistry and Chemical Engineering Queen’s University BelfastBelfast BT95AGNorthern IrelandUK Institute of Refining and Petrochemicals Technologies King Abdulaziz City for Science and Technology(KACST)P.O.Box 6086Riyadh 11442Kingdom of Saudi Arabia

Developing cost-effective and high-performance catalyst systems for dry reforming of methane(DRM)is crucial for producing hydrogen(H_(2))***,we investigate using iron(Fe)as a promoter and major alumina support in Ni-based catalysts to improve their DRM *** addition of iron as a promotor was found to add reducible iron species along with reducible NiO species,enhance the basicity and induce the deposition of oxidizable *** incorporating 1 wt.%Fe into a 5Ni/10ZrAl catalyst,a higher CO_(2) interaction and formation of reducible"NiO-species having strong interaction with support"was observed,which led to an∼80%H_(2) yield in 420 min of Time on Stream(TOS).Further increasing the Fe content to 2 wt.%led to the formation of additional reducible iron oxide species and a noticeable rise in H_(2) yield up to 84%.Despite the severe weight loss on Fe-promoted catalysts,high H_(2) yield was maintained due to the proper balance between the rate of CH_(4) decomposition and the rate of carbon deposit ***,incorporating 3 wt.%Fe into the 5Ni/10ZrAl catalyst resulted in the highest CO_(2) interaction,wide presence of reducible NiO-species,minimumgraphitic deposit and an 87%H_(2) *** findings suggest that ironpromoted zirconia-alumina-supported Ni catalysts can be a cheap and excellent catalytic system for H_(2) production via DRM.

关键词： Dry reforming of methane Coke resistant Hydrogen production Cheap catalyst Fe-promoted catalyst

Leveraging Artificial Intelligence to Achieve Sustainable Public Healthcare Services in Saudi Arabia: A Systematic Literature Review of Critical Success Factors

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Computer Modeling in Engineering & Sciences 2025年第2期142卷 1289-1349页

作者： Rakesh Kumar Ajay Singh ahmed Subahi ahmed Kassar Mohammed Ismail Humaida Sudhanshu Joshi Manu Sharma Department of Health Management College of Public Health and Health InformaticsUniversity of Ha’ilHa’il81451Saudi Arabia Department of Management&Information Systems College of Business AdministrationUniversity of Ha’ilHa’il81451Saudi Arabia Department of Public Health College of Public Health and Health InformaticsUniversity of Ha’ilHa’il81451Saudi Arabia School of Management Doon UniversityDehradunUttarakhand248001India Department of Management Studies Graphic Era UniversityDehradunUttarakhand248002India

This review aims to analyze the development and impact of Artificial Intelligence(AI)in the context of Saudi Arabia’s public healthcare system to fulfill Vision 2030 *** is extensively devoted to AI technology deployment relevant to disease management,healthcare delivery,epidemiology,and ***,its AI is culturally sensitive and ethically grounded in *** on the PRISMA framework,an SLR evaluated primary academic literature,cases,and practices of Saudi Arabia’s AI implementation in the public healthcare ***,it categorizes prior research based on how AI can work,the issues it poses,and its implications for the Kingdom’s healthcare *** Saudi Arabian context analyses show that AI has increased the discreet prediction of diseases,resource management,and monitoring outbreaks during mass congregations such as ***,the study outlines critical areas for defining the potential for artificial intelligence and areas for enhancing digital development to support global healthcare *** key themes emerging from the review include Saudi Arabia:(i)the effectiveness of AI with human interaction for sustainable health services;(ii)conditions and quality control to enhance the quality of health care services using AI;(iii)environmental factors as influencing factors for public health care;(iv)Artificial Intelligence,and advanced decision-making technology for Middle Eastern health care *** policymakers,healthcare managers,and researchers who will engage with AI innovation,the review proclaims that AI applications should respect the country’s socio-cultural and ethical practices and pave the way for sustainable healthcare *** empirical research is needed on the implementation issues with AI,creating culturally appropriate models of AI,and finding new applications of AI to address the increasing demand for healthcare services in Saudi Arabia.

关键词： Artificial intelligence public health services sustainability healthcare Saudi Arabia PRISMA

Evidence for active generation and seepage of sub-salt natural gas/condensate blend in the east offshore Nile Delta, Egypt: Integrated geochemical, petrophysical and seismic attribute approaches

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Petroleum Science 2025年第1期22卷 130-150页

作者： Mahmoud Leila ahmed A.Radwan Amir Ismail Emad A.Eysa Geology Department Faculty of Science Mansoura University School of Mining and Geosciences Nazarbayev University Department of Geology Faculty of Science Al-Azhar UniversityAssiut Branch Department of Geology Faculty of Science Helwan University Department of Physical and Environmental Sciences Texas A&M University—Corpus Christi Geology Department Faculty of Science Zagazig University

Offshore Nile Delta in Egypt represents an enormous hydrocarbon province with recent projected gas and condensate discoveries of more than 50 trillion cubic feet “TCF”. Most of these occur in the post-salt hydrocarbon plays where biogenic gases are dominant. This study integrates organic geochemistry,seismic geomorphology and petrophysics in order to decipher the origin, and accumulation conditions of the wet gas/condensate blend in the Upper Miocene sub-salt Wakar Formation sandstones in Port Fouad Marine “PFM” Field, offshore Nile Delta. Hydrocarbon pay zones are scattered thin（ 1 w.t.%, hydrogen index“HI” > 200 mg HC/g TOC） and mature(Tmax> 430°C, vitrinite reflectance “VR” > 0.6 %R_o), source rocks are restricted to Upper Miocene Wakar and Oligo-Miocene Tineh formations. The latter contains more mature organofacies（up to 1.2 %R_o） and type II/III kerogen, thereby demonstrating a good capability to generate wet gases. The studied gas is wet and has thermogenic origin with signs of secondary microbial alteration, whereas the condensate contains a mixture of marine and terrestrial input. Molecular biomarkers of the condensate, isotopic and molecular composition of the gas reveals a generation of condensate prior to gas expulsion from the source. The Wakar sandstones have a heterogeneous pore system where three reservoir rock types（RRTI, RRTII and RRTIII）. RRTI rocks present the bulk composition of the Wakar pay zones. Spatial distribution of RRTI facies likely control the accumulation of the sub-salt hydrocarbons. Our results provide a new evidence on an active petroleum system in the sub-salt Paleogene successions in the offshore Nile Delta where concomitant generation of ga

关键词： Petrophysical evaluation Source rock Hydrocarbon geochemistry Biomarkers Gas chimneys Rock-typing

Therapeutic use of music listening in patients undergoing invasive coronary procedures:A meta-analysis

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World Journal of Cardiology 2025年第1期17卷 78-91页

作者： ahmed Kamal Siddiqi Aimen Shafiq Mushood ahmed Anusha Anwer Muhammad Talha Maniya Aymen ahmed Muhammad Azhar Chachar Md Al Hasibuzzaman Division of Cardiothoracic Imaging Department of Radiology and Imaging SciencesEmory UniversityAtlantaGA 30322United States Department of Medicine Dow University of Health SciencesKarachi 74200Pakistan Department of Internal Medicine Rawalpindi Medical UniversityRawalpindi 74200Pakistan Department of Internal Medicine Dow Medical CollegeDow University of Health SciencesKarachi 74200Pakistan Department of Medicine Ziauddin Medical UniversityKarachi 74200Pakistan Department of Medicine Niramoy HospitalPanchagarh 5010Bangladesh Department of Medicine The First Affiliated Hospital of Ningbo UniversityNingbo 315211Zhejiang ProvinceChina

BACKGROUND Listening to music has been shown to reduce pain and anxiety before,during,and after invasive coronary *** To perform a systematic review and meta-analysis to explore the effect of therapeutic use of music on both,perioperative and postoperative outcomes of invasive coronary *** An exhaustive literature search of 3 electronic databases(MEDLINE,Scopus,Cochrane CENTRAL)was conducted from inception until 10th December *** results of our analyses are presented as standard mean difference(SMD)or weighted mean difference,with 95%CI and pooled using a random effects model.A P value<0.05 was considered significant in all *** From 21 studies,2141 participants were included in our *** pooled analysis demonstrated that music listening significantly improves post-procedural pain(SMD=-0.78,95%CI:-1.34 to-0.23;P=0.006),anxiety(SMD=-0.86,95%CI:-1.43 to-0.29;P=0.003),heart rate[mean difference(MD)=-3.38,95%CI:-5.51 to-1.25;P=0.002],and systolic blood pressure(MD=-5.89,95%CI:-9.75 to-2.02;P=0.003).There was no significant improvement in diastolic blood pressure(MD=-3.22,95%CI:-6.58 to 0.14;P=0.06)or respiratory rate(MD=-0.97,95%CI:-1.98 to 0.03;P=0.06).CONCLUSION Music listening can be used in healthcare settings for patients undergoing invasive coronary procedures to reduce anxiety levels and improve their physiological parameters.

关键词： Music Music therapy Percutaneous coronary intervention Coronary artery bypass grafting Angiography Anxiety Pain management

Enhancing Solar Photovoltaic Efficiency:A Computational Fluid Dynamics Analysis

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Energy Engineering 2025年第1期122卷 153-166页

作者： Rahool Rai Fareed Hussain Mangi Kashif ahmed Sudhakar Kumaramsay Faculty of Mechanical and Automotive Engineering Universiti Malaysia Pahang Al-Sultan AbdullahPekan26600PahangMalaysia Faculty of Engineering Science&Technology Hamdard UniversityKarachi74600Pakistan Electrical Engineering Department SUKKUR IBA UniversitySukkur65200Pakistan Berlin School of Business and Innovation BSBI Faculty of Computer Science and InformaticsBerlin12043Germany Automotive Engineering Centre University Malaysia Pahang Al Sultan AbdullahPekan26600PahangMalaysia Centre for Research in Advanced Fluid&Processes(Fluid Centre) Universiti Malaysia Pahang Al-Sultan Abdullah(UMPSA)Paya BesarKuantan26300PahangMalaysia

The growing need for sustainable energy solutions,driven by rising energy shortages,environmental concerns,and the depletion of conventional energy sources,has led to a significant focus on renewable *** energy,among the various renewable sources,is particularly appealing due to its abundant ***,the efficiency of commercial solar photovoltaic(PV)modules is hindered by several factors,notably their conversion efficiency,which averages around 19%.This efficiency can further decline to 10%–16%due to temperature increases during peak sunlight *** study investigates the cooling of PV modules by applying water to their front surface through Computational fluid dynamics(CFD).The study aimed to determine the optimal conditions for cooling the PV module by analyzing the interplay between water film thickness,Reynolds number,and their effects on temperature reduction and heat *** CFD analysis revealed that the most effective cooling condition occurred with a 5 mm thick water film and a Reynolds number of *** specific parameters were found to maximize the heat transfer and temperature reduction *** finding is crucial for the development of practical and efficient cooling systems for PV modules,potentially leading to improved performance and longevity of solar *** cooling fluids or advanced cooling techniques that might offer even better efficiency or practical benefits.

关键词： PV module efficiency water film thickness reynolds number CFD analysis PV/T renewable energy