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Journal of Chemistry and Chemical Engineering 2011年第2期5卷 150-158页

作者： Ahmed Zaky sayed Mahmoud sayed Aboul-Fetouh Hesham sayed nassar Chemistry Department University College P.O.Box 2064Umm Al-Qura University Makkah Al-Mokaramah Al-Aziziah 21955 Saudia Arabia Chemistry Department Faculty of Science A l-Azhar University Cairo 11884 Egypt

The synthesis of some new diazo disperse dyes containing a pyrazol-5-one was described. The structures of the new products have been deduced from elemental analysis and spectral dada such as UV-Vis absorption, IR, ^1H NMR, and MS spectroscopy. These dyestuffs gave satisfactory results when applied as disperse dyes to polyester fabric. The dyeing properties such as light fasmess, washing fastness and exhaustion studies have been investigated.

关键词： Pyrazolin-5-one disperse dyes disazo dyes dyeing exhaustion fastness

不同膳食油源对淡水鱼类生长性能，脂肪酸组成和HUFA生物合成的影响

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不同膳食油源对淡水鱼类生长性能，脂肪酸组成和HUFA生物合成的影...

作者： Samah Ahmed Mohamed sayed nassar（萨玛）华中农业大学

学位级别：硕士

鱼油(FO)被认为是水产饲料行业中最优质的脂肪酸源。鱼油高度富含n-3长链多不饱和脂肪酸(n-3 LC-PUFA),尤其是二十碳五烯酸和二十二碳六烯酸(22:6n-3,DHA)。但是随着鱼油资源的日益匮乏与价格的上涨,植物油被考虑用于替代鱼类饲料中的FO... 详细信息

鱼油(FO)被认为是水产饲料行业中最优质的脂肪酸源。鱼油高度富含n-3长链多不饱和脂肪酸(n-3 LC-PUFA),尤其是二十碳五烯酸和二十二碳六烯酸(22:6n-3,DHA)。但是随着鱼油资源的日益匮乏与价格的上涨,植物油被考虑用于替代鱼类饲料中的FO.我们的目标是通过饲喂富含α-亚麻酸或亚油酸的植物油作为FO的替代品来提高淡水鱼的营养价值。第一项研究致力于检测不同的脂肪源对尼罗罗非鱼(Oreochromis niloticus)生长性能,组织脂肪酸组成,血清参数以及与脂质代谢相关基因表达的影响。罗非鱼(13.15±1.11g)被喂养四种具有不同脂肪酸的等氮(39.5±0.4%)和等脂浓度(10%)的饲料,其中包括鱼油组(对照组),大豆油(SO),亚麻芥油(CO)以及三种脂肪酸等比混合组(MO),每组三个重复,20尾鱼/缸。我们的结果显示,膳食中的脂肪源有效的反映在了肝脏和肌肉的脂肪酸组成中。CO组肌肉组织表现出n-3系列脂肪酸的增加,尤其是18:3n-3和DHA,同时伴随着n-6系列脂肪酸的减少。另外我们也发现SO组肝脏的脂质含量最高,而饲喂FO和CO组的肌肉脂质含量最高。CO和MO组的血清低密度脂蛋白(LDL)浓度随多不饱和脂肪酸的增加而降低。这些结果表明,饲料中的亚麻芥油可以满足罗非鱼对n-3LC-PUFA的需要,有效替代饲料中的鱼油并提高罗非鱼的营养价值。此外,第二项研究旨在研究饲料中植物油替代鱼油对鱼类PUFA的体内合成及调控机制的影响。斑马鱼可以通过脂肪酸延长酶(Elovls)和脂肪酸去饱和酶(Fads)合成PUFA。鱼类elovl2基因已经被报道,并通过酵母异源表达对其功能进行了探究。哺乳动物中Elovl2可以有效的延长C20和C22 PUFA,对C18 PUFA的活性较低或无活性,这与我们在斑马鱼中观察相似。我们用CO和SO饲料对elovl2敲除(KO)和野生型(WT)斑马鱼进行了为期4周的投喂实验。正如预期的那样,与WT相比,elovl2 KO斑马鱼显示出C20:5n-3、C22:5n-3和C20:4n-6的含量的升高,伴随着DHA水平的下降.我们发现肝脏受损的PUFA合成影响了关键的脂质生成转录调节剂固醇调节元件结合蛋白1c(srebf1)的表达水平。因此,这项研究表明,elovo2对斑马鱼肝脏,肌肉和性腺中DHA的合成起到至关重要的作用。

关键词：植物油饲料配方基因表达肌肉脂肪酸组成营养需求基因敲除尼罗罗非鱼

Preparation and Characterization of Hot-Pressed and Sintered BiPbSrCaCuO Superconductor

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New Journal of Glass and Ceramics 2012年第2期2卷 75-84页

作者： Mohamed Mohamed Ibrahim nassar Mahmoud Megahid Mostafa Mohamed Abd El-Raheem sayed Mohammed Khalil Department of Physics Faculty of Science Sohag University Sohag Egypt Department of Physics Faculty of Science Taif University Taif KSA Department of Physics Faculty of Science Ummulqura University Mekka KSA

Powder compacts of the system Bi2–xPbxSr2Ca2Cu3Oy with 0 ≤ x ≤ 0.5 molar ratio using both techniques;isothermal hot pressing and the solid state reaction (sintering). The XRD of the hot pressed powder compacts of the nominal compositions Bi2–xPbxSr2Ca2Cu3Oy showed 2212 and 2223 phases. The resistivity temperature variations belonging to the composition Bi1.8Pb0.2Sr2Ca2Cu3Oy showed metal-superconducting transition at Tons = 143 K for the annealed sample for 24 h. The annealed nominal composition Bi1.5Pb0.5Sr2Ca2Cu3Oy for 18 h showed metal to superconducting transition at 80 K.

关键词： Electrical Resistivity Superconductors Hot Pressing Sintering

Intersection Curves of Implicit and Parametric Surfaces in R<sup>3</sup>

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Applied Mathematics 2011年第8期2卷 1019-1026页

作者： Mohamed Abdel-Latif Soliman nassar Hassan Abdel-All Soad Ali Hassan sayed Abdel-Naeim Badr 不详

We present algorithms for computing the differential geometry properties of Frenet apparatus {t,n,b,κ,τ} and higher-order derivatives of intersection curves of implicit and parametric surfaces in R3 for transversal and tangential intersection. This work is considered as a continuation to Ye and Maekawa [1]. We obtain a classification of the singularities on the intersection curve. Some examples are given and plotted.

关键词： Geometric Properties Frenet Frame Frenet Apparatus Frenet-Serret Formulas Surface-Surface Intersection Transversal Intersection Tangential Intersection Dupin Indicatrices

A Dynamic RF Front-End for Modern Radars

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通讯和计算机（中英文版） 2010年第5期7卷 78-82页

作者： Alaa El-Din sayed Hafez Mohammed nassar Mohammed Rizk Electrical Engineering Department Faculty of Engineering Alex. University Alexandria 21913 Egypt

Towards rational use of drugs in Egypt

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Towards rational use of drugs in Egypt

Biliary fistula and late recurrence of liver hydatid cyst:Role of cystobiliary communication:A prospective multicenter study

第十五届国际药理学大会

作者： Khayyal M. A Khayyal M. T Ibrahim M Abdel Khalek E nassar M Tantawy F Abdul sayed Y BrφsenK Bergman U Rane A Gustafsson L. Sjoqvist F. Faculty of Med Azhar Faculty of Med Faculty of Pharmacy Cairo University Faculty of Med Menofia Faculty of Med Shebin-El-Kom Teaching Hosp Helal Hlth.Insurance Hosp. Faculty of Med Shebin-El-Kom Teaching Hosp. Faculty of Med Shebin-El-Kom Teaching Hosp. Clin.Pharmacology Dept University of South Denmark Sweden. Clin.Pharmacology Dept Karolmska Inst. Sweden. Clin.Pharmacology Dept Karolmska Inst. Sweden. Clin.Pharmacology Dept Karolmska Inst. Sweden. Clin.Pharmacology Dept Karolmska Inst. Sweden.

＜正＞ A collaborative project between Egypt. Denmark and Sweden has been initiated to improve drug utilization in Egyptian hospitals （Tempus grant JEP - 31033）. Drug and therapeutics committees （DTCs） were founded from clinicians supported by pharmacological and pharmaceutical expertise. Data collected retrospectively led to identify the most commonly used drugs and their irrational use. Through consultations at the initial phase （1 year）, drug utilization of some commonly prescribed drugs fell by about 40 % . Emphasis has been put on the principles of drug evaluation in the training of DTC members. Preliminary results suggest that it is possible for DTCs to change drug utilization towards a more rational approach.

关键词： Drag rationalization Egyptian trial Tempus

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World Journal of Methodology 2023年第4期13卷 272-286页

作者： Tamer A A M Habeeb Mauro Podda Boris Tadic Vishal G Shelat Yaman Tokat Mohamed Ibrahim Abo Alsaad Abd-Elfattah Kalmoush Mohammed Shaaban nassar Fawzy Metwally Mustafa Mahmoud Hassib Morsi Badawy Mohamed Sobhy Shaaban Tarek Zaghloul Mohamed Mohammed Ibrahim El sayed Henish Hamdi Elbelkasi Mahmoud Abdou Yassin Abdelshafy Mostafa Amr Ibrahim Waleed A-Abdelhady TamerMohamed Elshahidy Mohamed Ibrahim Mansour Adel Mahmoud Moursi Mohamed Abdallah Zaitoun EhabShehata Abd-Allah Ashraf Abdelmonem Elsayed Rasha S Elsayed Ahmed M Yehia Amr Abdelghani Mohamed Negm Heba Alhussein Abo-Alella Mostafa M Elaidy Department of General Surgery Faculty of Medicine Zagazig UniversitySharkia 44511Egypt Department of Surgical Science University of CagliariCagliari 09126Italy Clinic for Digestive Surgery–First Surgical Clinic University Clinical Centre of SerbiaBelgrade 11000Serbia Department of General Surgery Tan Tock Seng HospitalSingapore 018971Singapore Department of Liver Transplantation and Hepatobiliary Surgery IstanbulTurkeyInternational Liver Centerand Acibadem Hospital GroupIstanbul 34000Turkey Department of General Surgery Faculty of Medicine-Merit UniversitySohag 82511Egypt Department of General Surgery Faculty of MedicineAl-Azher UniversityCairo 11765Egypt Department of General Surgery Mataryia Teaching HospitalCairo 11765Egypt

BACKGROUND Hydatid cyst disease(HCD)is common in certain *** is associated with postoperative biliary fistula(POBF)and *** primary aim of this study was to identify whether occult cysto-biliary communication(CBC)can predict recurrent *** secondary aim was to assess the role of cystic fluid bilirubin and alkaline phosphatase(ALP)levels in predicting POBF and recurrent *** To identify whether occult CBC can predict recurrent *** secondary aim was to assess the role of cystic fluid bilirubin and ALP levels in predicting POBF and recurrent *** From September 2010 to September 2016,a prospective multicenter study was undertaken involving 244 patients with solitary primary superficial stage cystic echinococcosis 2 and cystic echinococcosis 3b HCD who underwent laparoscopic partial cystectomy with *** logistic regression analysis assessed independent factors determining biliary complications and *** There was a highly statistically significant association(P≤0.001)between cystic fluid biochemical indices and the development of biliary complications(of 16 patients with POBF,15 patients had high cyst fluid bilirubin and ALP levels),where patients with high bilirubin-ALP levels were 3405 times more likely to have biliary *** was a highly statistically significant association(P≤0.001)between biliary complications,biochemical indices,and the occurrence of recurrent HCD(of 30 patients with recurrent HCD,15 patients had high cyst fluid bilirubin and ALP;all 16 patients who had POBF later developed recurrent HCD),where patients who developed biliary complications and high bilirubin-ALP were 244.6 and 214 times more likely to have recurrent hydatid cysts,*** Occult CBC can predict recurrent *** cyst fluid bilirubin and ALP levels predicted POBF and recurrent HCD.

关键词： Cysto-biliary communication Echinococcus granulosus Hydatid disease recurrence Hydatid fluid analysis Laparoscopy