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The Impact of Maritime Accidents on the Autonomous Ships Proving Their Missions in the Future

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Journal of Shipping and Ocean Engineering 2021年第2期11卷 64-73页

作者： Salah Eldin Farag omar mohamed fouad farid Maritime Safety Institute Arab Academy for ScienceTechnology and Maritime TransportEgypt

The main issue is figuring out how to make it work within the *** of relying on crew,shipping companies could make more money,by reducing manpower expenses and increasing cargo transport volumes,while the entire industry could become safer by eliminating the human factor that contributes so much to *** threats and errors will arise,but they can be as a minimum equalized or even reduced compared to the existing ones,so we can have more reliable ships without putting lives at *** main goal is to identify the most common ships accidents type,as well as the most common types of ships that cause accidents,which could have an impact on the future of autonomous *** is also a way to gain access to human error,education and training,and how to deal with weaknesses in the future of these *** research is based on a descriptive approach,as this methodology is the most capable of providing a comprehensive picture of the efficiency of the new technology.

关键词： Autonomous ships education and training human error

Phytochemical characterization of polyphenolic compounds with HPLC–DAD–ESI–MS and evaluation of lipid-lowering capacity of aqueous extracts from Saharan plant Anabasis aretioides(Coss & Moq.) in normal and streptozotocin-induced diabetic rats

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Journal of Integrative Medicine 2018年第3期16卷 185-191页

作者： omar farid farid Khallouki Morad Akdad Andrea Breuer Robert Wyn Owen mohamed Eddouks Team of Physiology & Endocrine Pharmacology Faculty of Sciences and Techniques Errachidia Moulay Ismail University Division of Preventive Oncology National Center for Tumor Diseases Im Neuenheimer Feld 460 German Cancer Research Center (DKFZ)

Objective： Anabasis aretioides （Coss ＆ Moq.）, a Saharan plant belonging to Chenopodiaceae family, is widely distributed in semi-desert areas from the Tafilalet region of Morocco. This plant is extensively used by local population against diabetes and cardiovascular disorders. The purpose of the study was to investigate the effect of the aqueous A. aretioides extract on lipid metabolism in normal and strepto-zotocin （STZ）-induced diabetic rats and to identify the polyphenolic compounds present. In addition, the in vitro antioxidant activity of the aqueous A. aretioides extract was also evaluated. Methods： The effect of an aerial part aqueous extract （APAE） ofA. aretioides （5 mg/kg of lyophilized A. are-tioides APAE） on plasma lipid profile was investigated in normal and STZ-induced diabetic rats （n = 6） after once daily oral administration for 15 days. The aqueous extract was tested for its 1,1-diphenyl-2-picrylhydrazyl （DPPH） radical-scavenging activity. Polyphenolic compounds in the extracts were defini-tively characterized by high-performance liquid chromatography-diode array detection-electrospray ionization-mass spectrometry. Results： In diabetic rats, oral administration ofA. aretioides APAE provoked a significant decrease in both plasma cholesterol and triglyceride levels from the first to the second week （P 〈 0.01）. A significant decrease on plasma triglyceride levels was also observed in normal rats （P 〈 0.01）, where the reduction was 53%. In addition, the phytochemical analysis revealed the presence of 12 polyphenolic compounds. Moreover, according to the DPPH radical-scavenging activity, the aqueous extract showed an in vitro antioxidant activity. Conclusion： Aqueous A. aretioides APAE exhibits lipid-lowering and in vitro antioxidant activities. Many polyphenols were present in this extract and these phytoconstituents may be involved in the pharmaco-logical activity of this plant.

关键词： Anabasis aretioides 1,1-Diphenyl-2-picrylhydrazyl Antioxidant activity Phytochemical analysis Lipid metabolism Polyphenolic compounds

Protective effects of Balanites aegyptiaca extract, melatonin and ursodeoxycholic acid against hepatotoxicity induced by methotrexate in male rats

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Asian Pacific Journal of Tropical Medicine 2017年第6期10卷 627-634页

作者： Ayat OS Montasser Hanan Saleh omar A.Ahmed-farid Aida Saad mohamed-Assem S.Marie National Organization for Drug Control And Research Faculty of Science Department of Zoology Cairo University

Objective: To compare the degree of ameliorative effects of Melatonin(MEL), Ursodeoxycholic acid(UDCA) and Balanites aegyptiaca(BA) against hepatotoxicity induced by MTX for one month. Methods: Eighty adult male rats(Sprague Dawely) weighing(190±10g), were randomly divided into eight equal groups: Control, MTX, MEL, BA, UDCA, MTX+MEL, MTX+BA, MTX+UDCA. Liver function biomarker enzymes, liver tissue oxidative stress parameters, together with total antioxidant capacity and tumor necrosis factor(TNF-α) were determined. Histopathological and immunohistochemistry examinations for TNF-α were also done. Results: MTX showed significant increase in alanine transaminase(ALT), aspartate transaminase(AST), alkaline phosphatase(ALP), gamma glutamyl transferase(GGT), total and direct bilirubin, as well as TNF-α levels, oxidized glutathione(GSSG), malodialdehyde(MDA) and nitric oxide(NO). whereas, total protein, albumin, total antioxidant capacity, reduced glutathione(GSH), glutathione peroxidase(GPx), glutathione reductase(GR), glutathione S-transferase(GST), superoxide dismutase(SOD) and catalase(CAT) levels were significantly decreased in MTX treated group. These alterations were improved by MEL and BA treatment, whereas no improvement was noticed in UDCA treatment. Conclusions: BA may be as promising as MEL in the hepatoprotection against MTX toxicity through their antioxidant and radical scavenging activities. In addition, it is not recommended to co-administer UDCA with MTX as it enhanced inflammation and damage to the liver.

关键词： Methotrexate Hepatotoxicity Melatonin Balanites aegyptiaca Ursodeoxycholic acid

Towards hepatitis C virus elimination:Egyptian experience,achievements and limitations

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World Journal of Gastroenterology 2018年第38期24卷 4330-4340页

作者： Dalia Omran mohamed Alboraie Rania A Zayed mohamed-Naguib Wifi Mervat Naguib mohamed Eltabbakh mohamed Abdellah Ahmed fouad Sherief Sahar Maklad Heba Hamdy Eldemellawy omar Khalid Saad Doaa mohamed Khamiss mohamed El Kassas Department of Endemic Medicine and Hepatology Faculty of MedicineCairo UniversityCairo 11651Egypt Department of Endemic Medicine Faculty of MedicineHelwan UniversityCairo 11599Egypt Department of Internal Medicine Al-Azhar UniversityCairo 11651Egypt Department of Clinical and Chemical Pathology Faculty of MedicineCairo UniversityCairo 11651Egypt Department of Internal Medicine Faculty of MedicineCairo UniversityCairo 11599Egypt Department of Tropical Medicine Faculty of MedicineAin Shams UniversityCairo 11566Egypt National Hepatology and Tropical Medicine Research Institute Cairo 11599Egypt Department of Internal Medicine Faculty of MedicineBeni-Suef UniversityBeni-Suef 62511Egypt Faculty of Medicine Ain Shams UniversityCairo 11566Egypt Department of Clinical and Chemical Pathology El-monera hospitalMinistry of HealthCairo 11562Egypt

Worldwide, more than one million people die each year from hepatitis C virus(HCV) related diseases, and over 300 million people are chronically infected with hepatitis B or C. Egypt used to be on the top of the countries with heavy HCV burden. Some countries are making advances in elimination of HCV, yet multiple factors preventing progress; remain for the majority. These factors include lack of global funding sources for treatment, late diagnosis, poor data, and inadequate screening. Treatment of HCV in Egypt has become one of the top national priorities since 2007. Egypt started a national treatment program intending to provide cure for Egyptian HCV-infected patients. Mass HCV treatment program had started using Pegylated interferon and ribavirin between 2007 and 2014. Yet, with the development of highly-effective direct acting antivirals(DAAs) for HCV, elimination of viral hepatitis has become a real possibility. The Egyptian National Committee for the Control of Viral Hepatitis did its best to provide Egyptian HCV patients with DAAs. Egypt adopted a strategy that represents a model of care that could help other countries with high HCV prevalence rate in their battle against HCV. This review covers the effects of HCV management in Egyptian real life settings and the outcome of different treatment protocols. Also, it deals with the current and future strategies for HCV prevention and screening as well as the challenges facing HCV elimination and the prospect of future eradication of HCV.

关键词： Hepatitis C virus Egypt Direct acting antivirals screening elimination Limitations

Spontaneous rupture of a recurrent hepatic cystadenoma

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World Journal of Hepatology 2010年第8期2卷 322-324页

作者： Hakim Elfadili Anass Majbar fouad Zouaidia Naoufal Elamrani farid Sabbah mohamed Raiss Najat Mahassini Abdelmalek Hrora mohamed Ahallat Clinique Chirurgicale C Ibn Sina Hospital Pathology Department Ibn Sina Hopital

Biliary cystadenoma is a rare cystic tumor of the middle aged woman that usually arises in the liver or occasionally in the extrahepatic bile *** has a strong potential for recurrence and for malignant tr *** lack of specific clinical and biological features hinders diagnosis before *** spontaneous rupture of a hepatobiliary cystadenoma is a very rare and potentially life-threatening complication,with only two reported cases in the English *** report a case with spontaneous rupture of a recurrent hepatobiliary cystadenoma in a 32 year-old woman.

关键词： Cystadenoma Liver Spontaneous rupture

The Impact of Turbulence on MANET FSO Networks Using NS-3

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Journal of Computer and Communications 2022年第10期10卷 162-171页

作者： Lamiae Bouanane fouad mohamed Abbou farid Abdi Kevin Smith Abdelouahab Abid Faculty of Sciences and Technologies Sidi Mohamed Ben Abdellah University Fes Morocco School of Science and Engineering Al Akhawayn University Ifrane Morocco Information Technology Islamic University of Medina Saudi Arabia Medina Kingdom of Saudi Arabia

In this paper, the impact of atmospheric turbulence is investigated and analyzed for the Free Space Optical Mobile Ad Hoc Networks (FSO MANET) using the Network Simulator NS-3. The FSO channel random intensity fluctuations have been modeled using the Exponentiated Weibull (EW) distribution. Further, the FSO module has been implemented and integrated with NS3 using the FSO propagation model and the FSO error models. The computation of the key performance indicators (KPI) mainly the throughput and the packet delivery ratio (PDR) shows that the network density affects the network performance. Its effect was illustrated for the different turbulence regimes, strong and weak. It is found that the throughput and PDR values decrease as the number of mobile nodes becomes larger. For instance, at 150 kbps and in the presence of strong turbulence with 25, 50, and 75 nodes, the PDRs are 77%, 76%, and 73% respectively. Moreover, the throughput and PDR values in the strong turbulence regime are lower than those in the weak turbulence regime for the same date rate. The throughput in the strong turbulence regime with 75 mobile nodes at the data rate 150 kbps is 2100 kbps while it is 2300 kbps in the weak turbulence mode at the same rate.

关键词： MANET FSO Turbulence Exponentiated Weibull BER Packet Delivery Ratio NS-3

Ontology-Based Cyber Security Policy Implementation in Saudi Arabia

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Journal of Information Security 2018年第4期9卷 315-333页

作者： Amir mohamed Talib Fahad omar Alomary Hanan fouad Alwadi Rawan Rashed Albusayli College of Computer and Information Sciences Al Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh KSA

Cyber security is an important element of national security and the safekeeping of a nation’s constituency and assets. In Saudi Arabia, the point of interest on cyber security is particularly outstanding due to the fact that Saudi Arabia has a highly cyber attacks all over the Arab countries. This paper displays on contemporary studies done in Saudi Arabia in regards to cyber security policy coverage. The point of interest of this paper is the use of ontology to identify and suggest a formal, encoded description of the cyber security strategic environment, and propose the development of ontology to be able to permit the implementation of the sort of policy. The intention of the ontology is to become aware of and constitute the multi-layered company of gamers and their related roles and obligations within the cyber security environment. This could make contributions in large part to the improvement, implementation and rollout of a country wide cyber security policy in Saudi Arabia.

关键词： Cyber Security Cyber Security Policy Implementation Ontology Saudi Arabia

Trends and outcomes of pancreaticoduodenectomy for periampullary tumors: A 25-year single-center study of 1000 consecutive cases

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World Journal of Gastroenterology 2017年第38期23卷 7025-7036页

作者： ayman el nakeeb waleed askar ehab atef ehab el hanafy ahmad m sultan tarek salah ahmed shehta mohamed el sorogy emad hamdy mohamed el hemly ahmed a el-geidi tharwat kandil mohamed el shobari talaat abd allah amgad fouad mostafa abu zeid ahmed abu el eneen nabil gad el-hak gamal el ebidy omar fathy ahmed sultan mohamed abdel wahab gastroenterology surgical center mansoura university

AIM To evaluate the evolution, trends in surgical approaches a n d r e c o n s t r u c t i o n t e c h n i q u e s, a n d i m p o r t a n t lessons learned from performing 1000 consecutive pancreaticoduodenectomies(PDs) for periampullary *** This is a retrospective review of the data of all patients who underwent PD for periampullary tumor during the period from January 1993 to April 2017. The data were categorized into three periods, including early period(1993-2002), middle period(2003-2012), and late period(2013-2017).RESULTS The frequency showed PD was increasingly performed after the year 2000. With time, elderly, cirrhotic and obese patients, as well as patients with uncinate process carcinoma and borderline tumor were increasingly selected for PD. The median operative time and postoperative hospital stay decreased significantly over the periods. Hospital mortality declined significantly, from 6.6% to 3.1%. Postoperative complications significantly decreased, from 40% to 27.9%. There was significant decrease in postoperative pancreatic fistula in the second 10 years, from 15% to 12.7%. There was a significant improvement in median survival and overall survival among the *** Surgical results of PD significantly improved, with mortality rate nearly reaching 3%. Pancreatic reconstruction following PD is still debatable. The survival rate was also improved but the rate of recurrence is still high, at 36.9%.

关键词： Pancreaticoduodenectomy Pancreaticogastrostomy Pancreaticojejunostomy Postoperative pancreatic fistula Periampullary tumor

Effects of Cellulose Fiber Content on Mechanical and Electrical Properties of Polyurethane Based Composites

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材料科学与工程（中英文A版） 2013年第6期3卷 398-406页

作者： Aomar Hadjadj fouad Malek El Miloud Maafi Lan Tighzert omar Jbara Jean-Luc Dellis Laboratory of Materials Science & Engineering (EA 4695) University of Reims Reims 51687 France Laboratory of Organic Macromolecular Chemistry and Natural Products (URAC 25) Faculty of Sciences Mohamed 1st University Oujda 60000 Morocco Laboratory of Condensed Matter Physics (EA 2081) University of Picardie Jules Vernes Amiens 80039 France