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Open Journal of Anesthesiology 2021年第1期11卷 1-11页

作者： Bahaa Gamal Saad Samy Abdelrahman Amr Ashraf Amin Mohammed Montaser abdelfattah Mohammed Department of Anesthesia Intensive Care and Pain Management South Egypt Cancer Institute Assuit University Assuit Egypt

Background: Cancer colon is one of the most common malignancies. After colon cancer surgery patients may experience severe pain. Several studies have reported that a significant decrease in postoperative pain with propofol while other studies have showed this effect was not significant. Aim: Our goal was to assess the effect of combined epidural anaesthesia either with propofol or sevoflurane on intraoperative fentanyl consumption and postoperative pain in patients undergoing open surgical resection of colon cancer. Patients and Methods: 48 adult patients suffering from cancer colon scheduled for open surgical resection randomly allocated either to receive epidural-propofol by total intra venous anaesthesia (TIVA) (n = 24) or epidural-sevoflurane

关键词： Cancer Colon Epidural Anesthesia Propofol Sevoflurane Postoperative Pain

Microalgae-based wastewater treatment:Mechanisms,challenges,recent advances,and future prospects

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Environmental Science and Ecotechnology 2023年第1期13卷 5-22页

作者： Abdallah abdelfattah Sameh Samir Ali Hassan Ramadan Eslam Ibrahim El-Aswar Reham Eltawab Shih-Hsin Ho Tamer Elsamahy Shengnan Li Mostafa M.El-Sheekh Michael Schagerl Michael Kornaros Jianzhong Sun School of Environment and Safety Engineering Jiangsu UniversityZhenjiang212013PR China Department of Public Works Engineering Faculty of EngineeringTanta UniversityTanta31511Egypt Biofuels Institute School of the Environment and Safety EngineeringJiangsu UniversityZhenjiang212013PR China Botany Department Faculty of ScienceTanta UniversityTanta31527Egypt Central Laboratories for Environmental Quality Monitoring(CLEQM) National Water Research Center(NWRC)El-Kanater13621QalyubiyahEgypt State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin150090PR China Department of Functional and Evolutionary Ecology University of ViennaDjerassiplatz 1A-1030 ViennaAustria Laboratory of Biochemical Engineering&Environmental Technology(LBEET) Department of Chemical EngineeringUniversity of Patras1 Karatheodori Str.University Campus26504PatrasGreece

The rapid expansion of both the global economy and the human population has led to a shortage of water resources suitable for direct human *** a result,water remediation will inexorably become the primary focus on a global *** can be grown in various types of wastewaters(WW).They have a high potential to remove contaminants from the effluents of industries and urban *** review focuses on recent advances on WW remediation through microalgae *** has already been paid to microalgae-based wastewater treatment(WWT)due to its low energy requirements,the strong ability of microalgae to thrive under diverse environmental conditions,and the potential to transform WW nutrients into high-value *** turned out that microalgae-based WWT is an economical and sustainable ***,different types of toxins are removed by microalgae through biosorption,bioaccumulation,and biodegradation *** are toxins from agricultural runoffs and textile and pharmaceutical industrial *** have the potential to mitigate carbon dioxide and make use of the micronutrients that are present in the *** review paper highlights the application of microalgae in WW remediation and the remediation of diverse types of pollutants commonly present in WW through different mechanisms,simultaneous resource recovery,and efficient microalgae-based co-culturing systems along with bottlenecks and prospects.

关键词： Bioremediation Wastewater treatment Environmental applications Microalgae Co-culturing

Preservability of rabbit semen after chilled storage in tris based extender enriched with different concentrations of Propolis ethanolic extract (PEE)

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Asian pacific Journal of Reproduction 2017年第2期6卷 68-76页

作者： Islam El-Sayed El-Seadawy Walid Said El-Nattat Magda Mohamed El-Tohamy Samy Ali Hussein Aziza Yakot abdelfattah El-Senosy Ahmed Said Hussein Animal Reproduction and A I Dept.Veterinary Research DivisionNational Research CentreGizaEgypt Biochemistry and Clinical Biochemistry Dept. Faculty of Veterinary MedicineBenha UniversityEgypt Food Industry Dept Food Industry and Nutrition Research DivisionNational Research CenterGizaEgypt

Objective:To maintain semen quality of male rabbits during chilled storage by enrichment the tris based diluent with different concentrations of propolis ethanolic ***: Total phenolic and total flavonoid contents, as well as antioxidant activity was determined in propolis ethanolic extract (PEE). The extract was analysed by HPLC for separation and identification of target metabolites. Semen was collected from 10 rabbit bucks, pooled, then divided into five aliquots (each of 500 μL) and diluted each in 5 mL Tris-citric acid-glucose-egg yolk extender (TCGY). The 1st aliquot served as control while PEE was added at concentration of 0.8, 1.2, 1.6 and 2.0 mg/5 mL tris extender in the aliquot 2, 3, 4 and 5 respectively. Diluted semen samples were subjected to cooling at 4℃ for 72 h. Sperm motility, sperm viability, sperm abnormality, sperm membrane integrity and acrosome integrity were evaluated in chilled semen allover the chilling ***:The resluts revealed presence of a considerable amount of total phenolic compounds (98.67 mg GAE/g extract) and total flavonoids (70.16 mg CE/g extract) which were parallel to an antioxidant activity assessed as ABTS, DPPH and FRAP (198.65, 180.18 and 306.17 mM TE/g extract respectively). The dominant phenolic acid was chlorogenic acids (3.959 mg/g extract). Other compounds were found in less amounts rosmarinic acid (3.959 mg/g extract), myrcetin (1.946 mg/g extract), kaempferol (1.089 mg/g extract) and apeginin-7-glucoside (1.113 mg/g extract). Obtained results clearly demonstrated that the addition of (1.2-1.6) mg PEE in the chilled extended rabbit semen proved to be beneficial for maintaining semen characteristics compared to control and the addition of 0.8 and 2 mg ***: The enrichment of rabbit semen tris-basic extender with (1.2-1.6) mg PEE/5 mL tris-extender (as the best and safe concentrations) maintain the sperm characteristics in good condition all over 72 h of chilling.

关键词： Male rabbits Semen extender Propolis extract Antioxidants HPLC

Some New Results on the Number of Paths

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Open Journal of Modelling and Simulation 2015年第3期3卷 63-69页

作者： Beih S. El-Desouky abdelfattah Mustafa E. M. Mahmoud Mathematics Department Faculty of Science Mansoura University Mansoura Egypt Mathematics Department Faculty of Science Aswan University Aswan Egypt

Khidr and El-Desouky [1] derived a symmetric sum involving the Stirling numbers of the first kind through the process of counting the number of paths along a rectangular array n*m denoted by ?Anm. We investigate the generating function for the general case and hence some special cases as well. The probability function of the number of paths along is obtained. Moreover, the moment generating function of the random variable X and hence the mean and variance are obtained. Finally, some applications are introduced.

关键词： Stirling Numbers Generating Function Moment Generating Function Comtet Numbers Maple Program

Multiparameter Higher Order Daehee and Bernoulli Numbers and Polynomials

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Applied Mathematics 2017年第6期8卷 775-785页

作者： Beih S. El-Desouky abdelfattah Mustafa Fatma M. Abdel-Moneim Department of Mathematics Faculty of Science Mansoura University Mansoura Egypt

This paper gives a new generalization of higher order Daehee and Bernoulli numbers and polynomials. We define the multiparameter higher order Daehee numbers and polynomials of the first and second kind. Moreover, we derive some new results for these numbers and polynomials. The relations between these numbers and Stirling and Bernoulli numbers are obtained. Furthermore, some interesting special cases of the generalized higher order Daehee and Bernoulli numbers and polynomials are deduced.

关键词： Daehee Numbers Daehee Polynomials Higher-Order Daehee Numbers Higher-Order Daehee Polynomials Higher-Order Bernoulli Polynomials Multiparities Daehee Polynomials

A Family of Generalized Stirling Numbers of the First Kind

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Applied Mathematics 2014年第10期5卷 1573-1585页

作者： Beih S. El-Desouky Nabela A. El-Bedwehy abdelfattah Mustafa Fatma M. Abdel Menem Mathematics Department Faculty of Science Damietta University Damietta Egypt Mathematics Department Faculty of Science Mansoura University Mansoura Egypt

A modified approach via differential operator is given to derive a new family of generalized Stirling numbers of the first kind. This approach gives us an extension of the techniques given by El-Desouky?[1]?and Gould?[2]. Some new combinatorial identities and many relations between different types of Stirling numbers are found. Furthermore, some interesting special cases of the generalized Stirling numbers of the first kind are deduced. Also, a connection between these numbers and the generalized harmonic numbers is derived. Finally, some applications in coherent states and matrix representation of some results obtained are given.

关键词： Stirling Numbers Comtet Numbers Creation Annihilation Differential Operator Maple Program

Negative Magnetoresistance Behaviour and Variable Range Hopping Conduction in Insulating NbSi Amorphous Alloys at Very Low Temperature with aagnetic Field

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Journal of Modern Physics 2012年第7期3卷 521-528页

作者： Abdelghani Sybous Abdelhamid El Kaaouachi Jamal Hemine abdelfattah Narjis Lhoussine Limouny Said Dlimi Rachid Abdia Gerard Biskupski Laboratoire de Physique de la Matière Condensée Faculté des Sciences et Techniques de Mohammadia Département de Physique Mohammedia Morocco Laboratoire de Spectroscopie Hertzienne LSH Batiment P5 Université des Sciences et Technologies de LilleI 59 655 Villeneuve d’Ascq Cedex France Research Group in ESNPS Physics Department University Ibn Zohr Faculty of Sciences B.P 8106 Hay Dakhla Agadir Morocco

We present results of an experimental study of magnetoresistance (MR) in insulating NbSi amorphous alloys sample showing Variable Range Hopping (VRH) conductivity. The MR is found to be negative in a wide range of low temperature (4.2-20 K) and in the range of moderate magnetic fields (0-4 T). We made tentative analysis using three theoretical models which are the model of quantum interference, the model of Zeeman effect and the model of localized magnetic

关键词： NbSi Amorphous Alloys Negative Magnetoresistance Magnetic Field Localized Magnetic moments Quantum Interference

Does Rifaximin Improve EEG and VEP in Egyptian Cirrhotic Patients with Minimal Hepatic Encephalopathy?

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Open Journal of Gastroenterology 2018年第10期8卷 362-376页

作者： Amr Mohamed abdelfattah Al-Amir Bassiouny Mohamed Gharib Fawi Badr Ragab Hassan M. Elnady Mohamed Malak Department of Gastroentrology and Tropical Medicine Sohag University Sohag Egypt Department of Neurology and Psychological Medicine Sohag University Sohag Egypt Department of Internal Medicine Sohag University Sohag Egypt

Background: Minimal hepatic Encephalopathy (MHE) is defined as HE without symptoms on clinical/neurological examination, but with deficits in some cognitive areas that can only be measured by neuropsychometric testing. However, numerous studies have shown that, although the neurological symptoms are slight, affected patients are markedly impaired in their quality of life and ability to work. Various treatment modalities that have been shown to reverse MHE include lactulose/lactitol, probiotics/synbiotics, L-carnitine but rifaximin has shown a general trend toward better efficacy and better tolerability in patients with overt hepatic encephalopathy (OHE). Objective: Our objective is to assess the diagnostic role of minimental state examination (MMSE), electroencephalography (EEG) and visual evoked potential (VEP) in detection of MHE and to evaluate the efficacy of rifaximin in improving EEG and VEP in patients with MHE. Patients and Methods: Sixty cirrhotic patients were enrolled in the study depending on clinical evidence of stigmata of chronic liver disease, laboratory investigations including liver function tests, ultrasonographic features of liver cirrhosis and with no evidence of overt hepatic encephalopathy. Diagnois of MHE was made depending on minimental state examination (MMSE) and neurophysiological tools including EEG and VEP. A control group of sixty healthy volunteers with age and sex matched were included. The patient group received Rifaximin 550 mg twice daily for 8 weeks then follow up EEG and VEP studies were done. Results: MHE was detected in 36.7%, 48.3%, 51.7% of our series based on MMSE, EEG and VEP respectively. Child Pouph A, B, C was found in 51.7%, 35%, 13.3% respectively. Rifaximin was well tolerated. At the end of treatment, EEG and VEP studies were done which showed signficant changes between pre and post treatment results (P value = 0.03, 0.001, Conclusion: MMSE as well as EEG and VEP were reasonable diagnostic tools for early detection o

关键词： MHE EEG VEP Rifaximin

The Odd Generalized Exponential Gompertz Distribution

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Applied Mathematics 2015年第14期6卷 2340-2353页

作者： M. A. El-Damcese abdelfattah Mustafa B. S. El-Desouky M. E. Mustafa Department of Mathematics Faculty of Science Tanta University Egypt Department of Mathematics Faculty of Science Mansoura University Egypt

In this paper we propose a new lifetime model, called the odd generalized exponential gompertz distribution. We obtained some of its mathematical properties. Some structural properties of the new distribution are studied. The method of maximum likelihood is used for estimating the model parameters and the observed Fisher’s information matrix is derived. We illustrate the usefulness of the proposed model by applications to real data.

关键词： Gompertz Distribution Hazard Function Moments Maximum Likelihood Estimation Odds Function T-X Family of Distributions

Positive Magnetoresistance in Hydrogenated Amorphous Alloys Silicon Nickel a-Si<sub>1-y</sub>Niy:H at Very Low Temperature with Magnetic Field

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Journal of Modern Physics 2012年第6期3卷 447-450页

作者： abdelfattah Narjis Abdelhamid El kaaouachi Jamal Hemine Abdelghani Sybous Lhoussine Limouny Said Dlimi Rachid Abdia Gerard Buskipski Laboratoire de Physique de la Matière Condensée Département de Physique Faculté des Sciences et Techniques de Mohammadia Mohammedia Morocco Laboratoire de Spectroscopie Hertzienne LSH Université de LilleI Villeneuve d’Ascq Cedex France Research Group ESNPS Physics Department Faculty of Sciences University Ibn Zohr Agadir Morocco

We present results of an experimental study of magnetoresistance phenomenon in an amorphous silicon-nickel alloys a-Si1-yNiy:H:H (where y = 0.23) on the insulating side of the metal-insulator transition (MIT) in presence of magnetic field up to 4.5 T and at very low temperature. The electrical resistivity is found to follow the Efros-Shklovskii Variable Range Hopping regime (ES VRH) with T -1/2. This behaviour indicates the existence of the Coulomb gap (CG) near the Fermi level.

关键词： Amorphous Silicon-Nickel Alloys a-Si1-yNiy:H Variable Range Hopping Conductivity Metal Insulator Transition Positive Magnetoresistance