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Hypolipidemic effect of coffee silver skin in rats fed a high-fat diet

Food Science and Human Wellness 2018年第4期7卷 252-259页

作者： Ayman mohammed El-Anany rehab farouk m.ali Department of Special Food and Nutrition Researches Food Technology Research InstituteAgricultural Research CenterGizaEgypt Biochemistry Department Faculty of AgricultureCairo UniversityGizaEgypt Department of Food Science and Human Nutrition College of Agriculture and Veterinary MedicineAl-Qassum UniversityQassimSaudi Arab

The present study was conducted to evaluate the hypolipidemic effects of coffee silver skin(CSS)supplementation in rats fed a highfat diet(HFD).A total of 40 albino rats were used in the present *** groups were as follows:Rats fed a normal diet,N group;high fat diet,HFD group;high fat diet+10%CSS,HFD 10;HFD+15%CSS,HFD 15;HFD+20%CSS,HFD 20;the diets were followed for 8 *** samples were collected at the end of the *** the time of sacrifice,the weights of heart,liver,kidneys,epididymal fat and retroperitoneal fat of the experimental rats with respect to body weight were *** lipid parameter of the serum was recorded and liver and kidney function tests were ***,a histopathological assay was performed on the liver and kidney tissues of the rats fed the tested *** weight gain of the rats fed a HFD supplemented with 10,15 and 20%CSS was∼1.05,1.08 and 1.12 times lower than that of those rats fed HFD,*** incorporation of CSS at a level of 20%reduced the increase in liver,kidney,epididymal fat and retroperitoneal fat weight by 17.84,19.38,47.23 and 18.00%,respectively,compared with HFD *** administration induced considerable increases in alanine aminotransferase,aspartate aminotransferase and alkaline phosphatase activities compared with the control *** results also indicated that the HFD-fed rats exhibited increased levels of urea,uric acid and creatinine,by∼26.38,8.40 and 6.75%,respectively,compared with the control *** the exception of high-density lipoprotein cholesterol,all lipid fractions increased significantly in rats fed a *** administration of a HFD induced marked pathological changes in the liver and kidneys of the ***,the incorporation of various levels of CSS in to a HFD reduced these *** results of the present study illustrate that the incorporation of CSS into HFDs reduces the hyperlipidemia effect of these diets.

关键词： Hypolipidemic Coffee Fiber Biochemical Serum lipid

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Protective and therapeutic potentials of Dunaliella salina on aging-associated cardiac dysfunction in rats

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Asian Pacific Journal of Tropical Biomedicine 2018年第8期8卷 403-410页

作者： farouk K.El-Baz Gehad A.Abdel Jaleel Dalia O.Saleh rehab A.Hussein Plant Biochemistry Department National Research Centre (NRC) Pharmacology Department National Research Centre (NRC) Pharmacognosy Department National Research Centre (NRC)

Objective: To investigate the possible protective and/or therapeutic potentials of Dunaliella salina(D. salina) biomass, its carotenoid and polar fractions on cardiac dysfunction associated with D-galactose(D-GAL) induced aging in rats. methods: Aging associated cardiac dysfunction was induced in rats by injection of D-GAL(200 mg/kg; i.p) for 8 weeks. D-GAL injected rats were treated with two regimens; protective regimen where D. salina biomass(250 mg/kg), its carotenoid(250 μg/kg) and polar(250 μg/kg) fractions were given orally for two weeks concurrently with D-GAL injection as well as treatment regimen where the three treatments were given orally for 28 consecutive days after D-GAL injection. Results: D-GAL injection for 8 weeks was accompanied with dramatic electrocardiographic changes as well as profound elevation in serum levels of homocysteine, creatinine kinase isoenzyme and lactate dehydrogenase in addition to the reduction of the cardiac content of glucose trasporter 4. D-GAL also induced reduction in cardiac superoxide dismutase activity and elevation of inducible nitric oxide synthetase and interleukin-6. On the other hand, oral administration of D. salina carotenoid fraction as well as the total biomass significantly attenuated the D-GAL-induced disturbances in the above mentioned parameters where the protective regimen appeared more successful in controlling the manifestations of cardiac dysfunction. The histopathological examination further emphasized the promising results. Besides, the HPLC analysis of the carotenoid fraction of D. salina revealed the presence of 2.31%. salina carotenoid fraction as well as the total biomass amelior β-carotene. Conclusions: Date D-GAL-induced aging associated cardiac dysfunction which is attributed to the potent antioxidant activity of β-carotene.

关键词： Aging Cardiac dysfunction Dunaliella salina Rats

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Structural Characterization and Antioxidant Activity of Lignin Extracted from Ficus Carica L.

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Journal of Renewable materials 2019年第4期7卷 345-354页

作者： Ibtissem moussa Ramzi Khiari ali moussa Gérard mortha mohamed farouk mhenni University of monastir Faculty of SciencesUR13 ES 63-Research Unity of Applied Chemistry&EnvironmentAvenue of the environment5019 MonastirTunisia University of monastir National Engineering School of MonastirStreet of Ibn El Jazzar5000 MonastirTunisia Higher Institute of Technological Studies of Ksar-Hellal Department of Textile-TunisiaAvenue of Hadj Ali Soua.5070 Ksar-HellalTunisia University of Grenoble Alpes CNRSGrenoble INPLGP2F-38000 GrenobleFrance

The most abundant phenolic biopolymer in the biosphere is the *** phenolic biopolymer commonly exists in combination with polysaccharides and other cell wall *** this study,the solvent system dioxane-water is used to extract lignin,which is considered as unaltered native *** dioxane lignin extracted from fig stems was characterized regarding to its structural feature,quantification of its functional groups,molecular weight,and evaluation of its thermal *** and molecular weight distribution of the studied lignin indicated that isolated lignin contained a low amount of sugar(c.a.19%)and had a high weight-average molecular weight(10068 ***-1).Lignin sample had approximately the same amounts of guaiacyl(G)and p-hydroxyphenyl(H)units with relatively fewer syringyl(S)*** isolated lignin revealed good antioxidant ***,it proved to have a high potential of application in new antioxidants formulations.

关键词： Ficus Carica L. lignin organosolv molecular weight NmR spectroscopy antioxidant activity

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Communications in Theoretical Physics 2010年第10期54卷 603-608页

作者： m.H.m.moussa rehab m.El-Shiekh Department of mathematics Faculty of EducationAin Shams University

In this paper, the symmetry method has been carried over to the generalized variable coefficients Zakharov- Kuznetsov equation. The infinitesimal symmetries and the optimal system are deduced and from this optimal system seven basic fields are determined, and for every vector field in the optimal system the admissible forms of the coefficients are found and this also leads us to transform the given equation into partial differential equations in two variables. After using some referenced transformations the mentioned partial differential equations eventually reduce to ordinary differential equations. The search for solutions to those equations has yielded many exact solutions in most cases.

关键词： symmetry method the generalized variable coefficients Zakharov-Kuznetsov equation exact solutions

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Threat Security Detection on management Cars System Based on IoT

Threat Security Detection on Management Cars System Based on...

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作者： GHILAN SADDAm farouk ali 兰州理工大学

学位级别：硕士

基于IoT和数据加密技术的管理车辆系统上的威胁安全检测对于实现智能运输系统(ITS)和安全隐私保护至关重要。这样可以方便车辆数据隐私的管理和控制,提高数据认证的安全性,保护数据隐私。在物联网云中,节点可以通过相互传递消息来共享... 详细信息

基于IoT和数据加密技术的管理车辆系统上的威胁安全检测对于实现智能运输系统(ITS)和安全隐私保护至关重要。这样可以方便车辆数据隐私的管理和控制,提高数据认证的安全性,保护数据隐私。在物联网云中,节点可以通过相互传递消息来共享信息资源。但是,由于环境脆弱,网络容易受到安全攻击和隐私攻击。消息身份验证是确保通信安全的一种重要方法,并且已在物联网网络中广泛使用。然而,由于车辆网络的动态性和拓扑结构,车辆网络中的节点对消息具有严格的时间要求。针对物联网车辆网络的现有认证方案未能满足网络的严格时间要求,从而导致信息丢失。信息丢失经常发生在节点上,特别是在困难的情况下。因此,有必要研究车辆系统中安全有效的消息认证方案。首先,介绍了基于物联网和认证的车辆系统的研究现状和未来发展趋势。然后,我们描述了我们研究的必要性和创新性。此外,我们讨论了威胁安全识别中出现的保护和隐私问题。我们提出一种有效的数字签名,加密算法高级加密标准(AES)算法来加密和解密数据,并使用身份验证算法提高消息身份验证的速率,以减少消息身份验证的计算成本和时间因素。对该算法进行了广泛的分析评估,结果表明该算法是有效的,可以保证信息安全和用户隐私。其次,为了避免由于认证延迟而导致的高消息丢失率问题,我们基于网络的特殊性提出了一种高效安全的消息认证方案。车辆通信的重点是保护隐私数据。在本文方案中,车辆将接收到的消息分为几个优先级队列,并根据分类结果对消息进行身份验证,优先级高的消息将得到优先验证,从而降低了车辆的重要消息丢失率。本文针对路边单元引入了一种基于反向拍卖的合作认证算法,合作认证可以减少攻击的工作量,而且拍卖机制可以使用高级加密标准算法使数据受到更多保护。本文通过大量的分析和仿真对所提方案进行了评估,结果表明该方案可以提高认证效率,显着降低消息丢失率,并保证信息的安全性和私密性。

关键词：密码学物联网安全消息认证消息加密网络安全合作认证

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Solitary wave solutions for the variable-coefficient coupled nonlinear Schrödinger equations and Davey-Stewartson system using modified sine-Gordon equation method

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Journal of Ocean Engineering and Science 2020年第2期5卷 180-185页

作者： rehab m.El-Shiekh mahmoud Gaballah Department of mathematics College of Science and Humanities at Howtat SudairMajmaah University11952Saudi Arabia Department of Physics College of Science at Al-ZulfiMajmaah University11952Saudi Arabia Department of mathematics Faculty of EducationAin Shams UniversityCairoEgypt

In this study,the sine-Gordon equation method is modified to deal with variable-coefficient systems containing imaginary parts,such as nonlinear Schrödinger *** are of considerable importance in many fields of research,including ocean engineering and *** an example,we apply the modified method to variable-coefficient coupled nonlinear Schrödinger equations and Davey-Stewartson system with variable coefficients,treating them as one-dimensional and two-dimensional systems,*** a result of this application,novel solitary wave solutions are obtained for both ***,some figures are provided to illustrate how the solitary wave propagation is determined by the different values of the variable group velocity dispersion terms,which can be used to model various phenomena.

关键词： Coupled nonlinear Schrödinger equations Davey-Stewartson system with variable coefficients Sine-Gordon equation method Solitary waves

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New analytical solitary and periodic wave solutions for generalized variable-coefficients modified KdV equation with external-force term presenting atmospheric blocking in oceans

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Journal of Ocean Engineering and Science 2022年第4期7卷 372-376页

作者： rehab m.El-Shiekh mahmoud Gaballah Department of mathematics Faculty of EducationAin Shams UniversityCairoEgypt College of Business Administration in majmaah Majmaah UniversityAL-Majmaah 11952Saudi Arabia Department of Physics College of Science at Al-ZulfiMajmaah UniversityAL-Majmaah 11952Saudi Arabia Geomagnetic and Geoelectric Department National Research Institute of Astronomy and Geophysics(NRIAG)11421 HelwanCairoEgypt

In this study,the generalized modified variable-coefficient KdV equation with external-force term(gvcmKdV)describing atmospheric blocking located in the mid-high latitudes over ocean is studied for integrability property by using consistent Riccati expansion solvability and the necessary integrability conditions between the function coefficients are ***,several new solutions have been constructed for the ***,the classical direct similarity reduction method is used to re-duce the gvcmKdV to a nonlinear ordinary differential *** on the solutions given in the previous literature for the reduced equation,many novel solitary and periodic wave solutions have been obtained for the gvcmKdV.

关键词： Atmospheric blocking in oceans The generalized variable-coefficients modified KdV equation with external-force term Consistent Riccati expansion solvability Direct similarity reduction method Solitary wave solutions Periodic wave solutions

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Expression levels ofβcatenin and galectin-3 in meningioma and their effect on brain invasion and recurrence:a tissue microarray study

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Cancer Biology & medicine 2017年第3期14卷 319-326页

作者： rehab Allah Ahmed Abdelhadi m Shebl Hany Onsy Habashy Department of Pathology Mansoura UniversityFaculty of MedicineMansoura DK 35516Egypt

Objective:meningiomas are neoplasms that arise from the meninges of the central nervous system(CNS).They constitute about25.6%of CNS tumors diagnosed in *** morphological variants of meningiomas display aggressive behavior,leading to brain-invasive growth *** meningiomas are usually treated by complete surgical excision,the risk of postoperative recurrence ***,additional biomarkers for predicting aggressive behavior must be *** study aims to explore the clinical and biological relevance of the protein expression levels ofβ-catenin and galectine-3 in meningioma and to understand the pathobiology of this ***:This retrospective study was carried out on 153 cases of meningioma by using tissue microarrays and immunohistochemistry forβ-catenin and ***:Highβ-catenin expression was significantly associated with transitional and meningiotheliomatous meningiomas,low tumor grade,low recurrence rate,and low incidence of brain ***,high galectin-3 expression was associated with brain invasion,recurrence,high tumor grade,and tumor *** regression analysis indicated that among all variables included in the model,β-catenin and galactin-3 expression levels were significant predictors of tumor recurrence(Pmeningioma recurrence but not in brain *** molecules could be important potential therapeutic targets and predictors for meningiomas.

关键词： Immunohistochemistry meningioma recurrence brain invasion galectin-3 and β-catenin

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Application of Prunus amygdalus By-products in Eco-friendly Dyeing of Textile Fabrics

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Journal of Renewable materials 2018年第1期6卷 55-67页

作者： Ibtissem moussa Noureddine Baaka Ramzi Khiari ali moussa Gérard mortha mohamed farouk mhenni University of monastir Faculty of SciencesUR13ES63-Research Unity of Applied Chemistry&Environment5000 MonastirTunisia Higher Institute of Technological Studies of Ksar Hellal Department of TextilesRue Hadj Ali Soua-B.P.n°68-5070 Ksar HellalTunisia Institute of Engineering University of Grenoble AlpesCNRSGrenoble INPLGP2F-38000 GrenobleFrance National Engineering School of monastir 5019 MonastirTunisia

Natural dyes have become an interesting subject of study because of their better ecological properties in comparison to their synthetic *** article concerns the dyeing of wool,silk,and polyamide fabrics with natural dyes extracted from almond shells and *** developed method of dyeing by these extracts is interesting and very attractive for several reasons:firstly,the extracts used are the black liquor discharged from the industries of delignification,which is a chemical process for removing lignin from agricultural wastes to produce a cellulosic fiber;(ii)these natural dyes are renewable and available in large quantities;(iii)this method is economical;and(iv)lastly,the dyeing performances of the obtained dyed textiles are very *** color of each dyed material was investigated in terms of the CIELAB coordinates and their fastness properties measured by washing,rubbing,and light.

关键词： Almond shell almond stem fastness properties natural dyes residual lignin

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Utilization of Carob (<i>Ceratonia siliqua</i>L.) Extract as Functional Ingredient in Some Confectionery Products

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Food and Nutrition Sciences 2020年第8期11卷 757-772页

作者： rehab mohamed Ibrahim Faten farouk Abdel-Salam Elsayed Farahat Department of Special Food and Nutrition Food Technology Research Institute Agricultural Research Center Giza Egypt Department of Food Science and Technology Faculty of Agriculture (El-Shatby-21545) Alexandria University Alexandria Egypt

The aim of this study was to investigate the physicochemical and antioxidant activity of carob pod powder and its use in preparing of functional drinks, and some confectionery products. The raw and heated (at 110°C and 130°C/20 min) carob powder was used in preparing of drinks. The concentrate carob drink was used in preparing of some confectionery products. The drying process significantly decreased the moisture and total sugars values in carob powder. The antioxidant activity (was measured by two different assays, which are DPPH radical scavenging activity and FRAP) of heated carob powder drinks was lower than the raw carob powder drink, while total phenolic not affected. The best sensory acceptability was observed with raw carob powder drink at ratio 1:2 (carob powder: water). The concentration process caused significant increase in total phenolic and antioxidant activity of carob drink. According to the sensory evaluation results, the carob concentrate was used in preparation of Toffee, Jelly candy and Turkish delight by 5%

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