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A Secured Message Transmission Protocol for Vehicular Ad Hoc Networks

Computers, Materials & Continua 2021年第7期68卷 229-246页

作者： A.F.M.Suaib Akhter A.F.M.Shahen Shah Mohiuddin ahmed Nour moustafa UnalÇavu¸soglu Ahmet Zengin Department of Computer Engineering Sakarya UniversitySakarya54050Turkey Department of Electrical and Electronics Engineering Istanbul Gelisim UniversityIstanbulTurkey School of Science Edith Cowan UniversityPerthWA6027Australia School of Engineering and Information Technology UNSWCanberra BC2610Australia

Vehicular Ad hoc Networks(VANETs)become a very crucial addition in the Intelligent Transportation System(ITS).It is challenging for a VANET system to provide security services and parallelly maintain high throughput by utilizing limited *** overcome these challenges,we propose a blockchain-based Secured Cluster-based MAC(SCB-MAC)*** nearby vehicles heading towards the same direction will form a cluster and each of the clusters has its blockchain to store and distribute the safety *** message which contains emergency information and requires Strict Delay Requirement(SDR)for transmission are called safety messages(SM).Cluster Members(CMs)sign SMs with their private keys while sending them to the blockchain to confirm authentication,integrity,and confidentiality of the message.A Certificate Authority(CA)is responsible for physical verification,key generation,and privacy preservation of the *** implemented a test scenario as proof of concept and tested the safety message transmission(SMT)protocol in a real-world *** and storage overhead analysis shows that the proposed protocol for SMT implements security,authentication,integrity,robustness,non-repudiation,*** maintaining the *** that are less important compared to the SMs are called non-safety messages(NSM)and vehicles use RTS/CTS mechanism for NSM *** studies show that the proposed NSM transmission method maintains 6 times more throughput,2 times less delay and 125%less Packet Dropping Rate(PDR)than traditional MAC *** results prove that the proposed protocol outperforms the traditional MAC protocols.

关键词： Ad hoc networks data security digital signatures distributed storage intelligent vehicles vehicular ad hoc networks wireless communication

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In vitro activity of natural honey alone and in combination with curcuma starch against Rhodotorula mucilaginosa in correlation with bioactive compounds and diastase activity

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Asian Pacific Journal of Tropical Biomedicine 2013年第10期3卷 816-821页

作者： moussa ahmed Noureddine Djebli Saad Aissat Baghdad Khiati Abdelmalek Meslem Salima Bacha Pharmacognosy and Api-Phytotherapy Research Laboratory Mostaganem.UniversityAlgeria

Objective:To evaluate the in vitro activity and synergism of the combinations of natural honey and curcuma starch against Rhodotorula mucilaginosa in correlation with total phenolic,flavonoid contents,and diastase ***:The Folin-Ciocalteu test was used to determine the total polyphenols content and the flavonoid content was analyzed using by the aluminum chloride *** antifungal activity of the natural honey,determined by an agar well diffusion assay and agar incorporation ***:Total phenolic content varied from(63.93±0.11)to(95.36±6.08)mg GAE/100 g honey as gallic acid *** flavonoids content varied from(5.41±0.04)to(9.94±0.54)mg CE/*** activity values were between(7.3±2.8)and(26±2.8).The zone inhibition diameter for the six honey samples without starch ranged between 6 and 20 *** starch was mixed with honey and then added to well,a zone inhibition increase diameter 7 and 21 *** percentage increase was noticed with each variety and it ranged between 5%and 62.5%.The minimal inhibitory concentrations for the six varieties of honey without starch against Rhodotorula mucilaginosa ranged between 28%and 36%(v/v).When starch was incubated with honey and then added to media,a minimal inhibitory concentration drop has been noticed with each *** ranged between 6.66%and 20%(w/v).No significant correlation was established between diastase activity and bioactive ***:The mixture of curcuma starch and honey could lead to the development of new combination antibiotics against Rhodotorula

关键词： Bioactive Compounds Diastase number Rhodotorula mucilaginosa Honey Curcuma starch

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Pre-formed endotracheal tube and stepwise insertion for more successful intubation with video laryngoscopy

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World Journal of Anesthesiology 2021年第2期10卷 7-15页

作者： ahmed A Shorrab moustafa A Helal Department of Anesthesia University Hospital SharjahSharjah POB 72772United Arab Emirates Faculty of Medicine Mansoura UniversityMansoura 35516Egypt University Hospital Sharjah SharjahUnited Arab Emirates

BACKGROUND In anesthesia practice,orotracheal intubation remains the primary concern of the *** introduction of video laryngoscopy(VL)has increased the success rate of orotracheal intubation;however,conflicting results have been reported regarding the usefulness of the current technique with VL in clinical *** To describe a modification to improve intubation with VL,followed by evaluation of the practice in *** First,a mannequin trial was conducted with operators having different experience and ***,a retrospective analysis was performed for an>1-year period with patients who underwent general anesthesia with orotracheal *** endotracheal tube used had been pre-formed with two *** intubation had been performed with direct eye vision,followed by screen assistance and rotation of the tube as needed to direct it toward the *** the mannequin trial,the outcome measures were quantification of torque(force with angular acceleration during levering),need for external maneuvers,and time to *** the clinical experience,orotracheal intubation used VL(pre-formed tube)or direct laryngoscopy(DL)at the anesthetist’s discretion and throat discomfort was reported by the *** In the mannequin trials using VL,there was less torque with the pre-formed tube than with a regular tube(8%and 65%,respectively).The first-pass rate was higher with the pre-formed tube(95%)than with a regular tube(81%).However,the time to intubate was longer with the pre-formed tube than with a regular tube(22 s and 12 s,respectively).In clinical practice,562 patients underwent surgery under general anesthesia with orotracheal intubation using either VL(n=244)or DL(n=318)at the discretion of the attending *** was specifically planned in 62 of the patients,due to anticipated *** attempts by readjustment of the curve of the tube were significantly fewer with VL than with DL(10%vs 18%).Throat discom

关键词： Intubation Glottis view Airway Indirect laryngoscopy Torque

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Evaluation and Analysis of Oil Shale in Quseir-Safaga and Abu-Tartur Western Desert, Egypt

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Journal of Surface Engineered Materials and Advanced Technology 2014年第2期4卷 53-65页

作者： El-Abbas moustafa ahmed Noah Adel Salem ahmed Nehad Maureen Amir Mohamed Nosr Radwa Awad Mahmoud Gomaa Marawan moussa Petroleum and Energy Science Department Faculty of Engineering American University in Cairo Cairo Egypt Production Department Egyptian Petroleum Institute EPRI Nasr City Cairo Egypt Petroleum and Energy Science Department Faculty of Engineering American University in Cairo Cairo Egypt

Seeking ways to diminish Egypt’s dependency on foreign oil imports, we had to look for the obvious resources to exploit. Oil shale is one of Egypt’s resources that are left abandoned and not used. This project is aiming at introducing both experimental analysis for oil shale in Egypt and the best production technique for it. This study is about experimentally analyzing different samples of potential oil shale fields in Egypt. Samples that are analyzed in this project are from two locations in Egypt: Quseir-Safaga and Abu-Tartur Western Desert, and they are compared to one of the best oil shale fields in the world, which is from Green River Formation Colorado. The experiments were done using AUC lab retort to experimentally determine the critical temperature that will lead to the maximum production using sudden and gradual change in temperatures, which turned out to be sudden change at 500°C. Thereafter, the degree of API gravity was calculated for each run. Then the oil samples were determined for impurities and liquid chromatography results in the Egyptian Petroleum Research Institute. Part two of the study plan has been included to determine the ultimate ways of producing efficiently, ecologically and economically.

关键词： Oil Shale Retort Method Critical Temperature Oil Composition

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Inverse Gas Chromatographic Study of the Oxidation Stability of Lubricating Base Oils via Solubility Parameter Calculations

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色谱 2007年第6期25卷 871-875页

作者： moustafa Nagy Emam EISSA Elham ahmed Egyptian Petroleum Research Institute

The Flory-Huggins interaction parameter(χ1,2∞) and solubility parameter(δ2) and its hydrogen bonding sensing component(δh) were determined using inverse gas chromatography(IGC).These parameters were successfully used in the probes of chemical changes that occur during the oxidation of naphthenic and paraffinic base oils in a GC *** in χ1,2∞ values reflect the different types of intermolecular interactions(dispersive,polar,hydrogen bonding) of the given lubricating base oil during *** obtained results showed that δh component of solubility parameter is the most important parameter for probing the oxidative-chemical changes during the oxidation of given lubricating oils.

关键词：反相气相色谱氧化稳定性润滑原油溶解参数计算

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New Polymer Syntheses Part 60: A Facile Synthetic Route to Polyamides Based on Thieno[2,3-b]thiophene and Their Corrosion Inhibition Behavior

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Chinese Journal of Polymer Science 2018年第7期36卷 835-847页

作者： Kamal I.Aly Amr H.moustafa Essam K.ahmed Hany M.Abd El-lateef Mohamed Gamal Mohamed Sahar M.Mohamed Polymer Research Lab Chemistry Department Faculty of Science Assiut University Chemistry Department Faculty of Science Sohag University Chemistry Department Faculty of Science Minia University Chemistry Department College of Science King Faisal university

Polyamides containing thieno[2,3-b]thiophene moiety were prepared via a simple polycondensation reaction of the diaminothieno[2,3-b]thiophene monomer la with different kinds of diacid chlorides （including oxalyl, adipoyl, sebacoyl, isophthaloyl, terephthaloyl, 4,4＇-azodibenzoyl, 3,3＇-azodibenzoyl, p-phenylene diacryloyl） in the presence of LiC1 and NMP as a solvent through lowtemperature solution polycondensation. The chemical structures of model compound and synthesized polyamides were confirmed by FTIR, nuclear magnetic resonance spectroscopy （including 1 H-NMR and 13 C-NMR） and elemental analysis. In addition, the thermal stability, crystallinity structure and surface morphology of synthesized polyamides were characterized via thermogravametric analysis （TGA）, wide-angle X-ray diffraction analysis （WAXD） and scanning electron microscopy （SEM）. Also, the corrosion inhibition behavior of selected examples ofpolyamides was investigated; the inhibitive effect of the investigated polymers for carbon steel in 1.0 mol＇L-1 HCI was studied using potentiodynamic polarization （PDP） and electrochemical impedance spectroscopy （EIS） methods. PDP results displayed that the polyamides containing thieno[2,3-b]thiophene moiety can be as mixed-type inhibitors. The inhibition efficiency （P, %） was found to be in the range from 67.13% to 96.01%. There is an increase in P by the synthesized polymers in comparison to the starting monomer. The adsorption of these polymers was found to obey Langmuir adsorption isotherm.

关键词： Thieno[2 3-b]thiophene Polymer synthesis Thermal properties Industrial applications Corrosion inhibition

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Comparison of efficacy of unheated and heat-treated Sahara honey on wound healing in rabbits

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Journal of Coastal Life Medicine 2015年第2期 162-165页

作者： Baghdad Khiati moussa ahmed Institute of Veterinary Sciences University Ibn-Khaldoun TiaretAlgeria

Objective:To investigate the efficacy of unheated and heat-treated Sahara honey on wound healing in rabbits on the basis of macroscopic observation ***:Eight female rabbits were *** aseptic surgical technique,a 3 cm incision was made on the back of each rabbit and two rabbits with injuries in each group were treated daily with a topical application of unheated and heated honey,sulfadiazine and sterile saline,***:The unheated honey demonstrated the highest activity on the wound compared to reference ointment silver sulfadiazine,heat-treated honey and sterile saline *** the present investigation proves that unheated honey is possessing superior wound healing activity than that of heat-treated ***:The result of this study confirms that unheated honey had the best wound healing effect even better than heat-treated honey.

关键词： Unheated honey Treated Sahara honey Wound healing

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Effect of heat treatment on antimycotic activity of Sahara honey

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Journal of Coastal Life Medicine 2014年第11期 876-881页

作者： moussa ahmed Saad Aissat Noureddine Djebli Pharmacognosy and Api-Phytotherapy Research Laboratory Mostaganem UniversityMostaganemAlgeria

Objective:To evaluate the influence of the temperature on honey colour,polyphenol contents and antimycotic capacity and to evaluate the correlation between these ***:Sahara honey were heated up to 25,50,75 and 100℃for 15,30 and 60 min,and their colour intensity,polyphenol contents and antimycotic *** Folin-Ciocalteu test was used to determine the total polyphenol contents(TPC).The antimycotic activity was evaluated both by agar diffusion method and micro wells dilution method against the Candida albicans(***)and Candida glabrata(***).Results:Initial values for TPC in Sahara honey ranged from 0.55 to 1.14 mg of gallic acid per kg of honey,with the average value of 0.78 mg of gallic acid per kg of *** TPC values after heat-treatment were 0.54 to 1.54 with the average value of 1.49 *** minimal inhibitory concentrations before heat-treatment of Sahara honey against *** and *** ranged from 3.06%-12.5%and 50%*** heat-treatment the minimal inhibitory concentrations between 12.5%and 50%for *** and ***,*** diameters of inhibition zones of Sahara honey with 50%concentration varied from(12.67-15.00)mm by *** to(14.33-15.67)mm by *** diameters of inhibition zones after heat-treatment at 25 and 50°C for 15.30 and 60 min ranged from(2.00-18.67)mm by *** to(8.00-16.67)mm by *** significant relations between the TPC and the colour intensity of Sahara honey(r=0.99,P<0.05).Furthermore,the results showed that the TPC and colour is not correlated with the antimycotic ***:To our knowledge this is the first report on the antimycotic capacity of Sahara honey.

关键词： Sahara honey Antimycotic capacity Heat treatment

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A Boundary Integral Formulation of the Plane Problem of Magneto-Elasticity for an Infinite Cylinder in a Transverse Magnetic Field

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Engineering（科研） 2013年第4期5卷 394-406页

作者： moustafa Saber Abou-Dina ahmed Fouad Ghaleb Department of Mathematics Faculty of Science Cairo University Giza Egypt

The objective of this work is to present a boundary integral formulation for the static, linear plane strain problem of uncoupled magneto-elasticity for an infinite magnetizable cylinder in a transverse magnetic field. This formulation allows to obtain analytical solutions in closed form for problems with relatively simple geometries, in addition to being particularly well-adapted to numerical approaches for more complicated cases. As an application, the first fundamental problem of Elasticity for the circular cylinder is investigated.

关键词： Plane Problems Magnetoelasticity Transverse Magnetic Field Boundary Integral Method

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Consensus statement on the epidemiology,diagnosis,prevention,and management of cow's milk protein allergy in the Middle East:a modified Delphi-based study

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World Journal of Pediatrics 2021年第6期17卷 576-589页

作者： moustafa A.El-Hodhod Mortada H.F.El-Shabrawi ahmed AIBadi ahmed Hussein AM Almehaidib Basil Nasrallah Ebtsam Mohammed AIBassam Hala El Feghali Hasan M.Isa Khaled Al Saraf Maroun Sokhn Mehdi Adeli Najwa Mohammed Mousa Al-Sawi Pierre Hage Suleiman Al-Hammadi Department of Pediatrics Faculty of MedicineAin Shams UniversityCairoEgypt Faculty of Medicine October 6 UniversityGizaEgypt Faculty of Medicine Cairo UniversityCairoEgypt International Pediatric Association(IPA) MarengoUSA International Society of Tropical Pediatrics(ISTP) ManilaPhilippines DRC Hospital MuscatOman Al Amiri and Al Adan Hospitals KuwaitKuwait Pediatric Gastroenterology Department of PediatricsKing Faisal Specialist Hospital and Research Center RiyadhRiyadhSaudi Arabia American Hospital Dubai DubaiUnited Arab Emirates Nutrition Service Department King Faisal Specialist and Research Center RiyadhRiyadhSaudi Arabia CHU Notre Dame de Secours ByblosLebanon Pediatric Department Salmaniya Medical ComplexManamaBahrain Pediatric department Arabian Gulf UniversityManamaBahrain Pediatrics Department Dar Al Shifa HospitalKuwaitKuwait Pediatric Gastroenterology Hepatologyand Nutrition DepartmentSaint George University Medical CenterUniversity of BalamandBeirutLebanon Sidra Medicine DohaQatar Department of Pediatrics Doctor Sulaiman Alhabib Medical GroupAlrryan BranchRiyadhSaudi Arabia Pediatric Pulmonology and Allergology University of BalamandBeirutLebanon College of Medicine Mohanuned Bin Rashid University of Medicine and Health SciencesBuilding 14505055 DubaiUnited Arab Emirates

Background This study aimed to develop an expert consensus regarding the epidemiology,diagnosis,and management of cow’s milk protein allergy(CMPA)in the Middle *** A three-step modified Delphi method was utilized to develop the *** specialized pediatricians participated in the development of this *** statement was considered a consensus if it achieved an agreement level of>80%.Results The experts agreed that the double-blind placebo-controlled oral challenge test(OCT)should be performed for 2-A weeks using an amino acid formula(AAF)in formula-fed infants or children with suspected ***-fed infants with confirmed CMPA should be offered a therapeutic *** panel stated that an extensively hydrolyzed formula(eHF)is indicated in the absence of red flag *** the same time,the AAF is offered for infants with red flag signs,such as severe anaphylactic *** panel agreed that infants on an eHF with resolved symptoms within 2-4 weeks should continue the eHF with particular attention to the growth and nutritional *** the other hand,an AAF should be considered for infants with persistent symptoms;the AAF should be continued if the symptoms resolve within 2-4 weeks,with particular attention to the growth and nutritional *** cases with no symptomatic improvements after the introduction of an *** measures should be *** panel developed a management algorithm,which achieved an agreement level of 90.9%.Conclusion This consensus document combined the best available evidence and clinical experience to optimize the management of CMPA in the Middle East.

关键词： Consensus Cow's milk protein allergy Infant formula Middle East Milk hypersensitivity

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