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Journal of Agricultural Science and Technology(A) 2016年第2期6卷 124-135页

作者： samia Ahmed Kamal Virology Department Animal Health Research Institute (AHRI) Dokki Giza 99999 Egypt

Experimental evaluation of Candonocypris novaezelandiae(Crustacea:Ostracoda) in the biocontrol of Schistosomiasis mansoni transmission

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Asian Pacific Journal of Tropical Biomedicine 2013年第4期3卷 267-272页

作者： Fouad Yousif Sherif Hafez samia El Bardicy Menerva Tadros Hoda Abu Taleb Department of Environmental Research and Medical Malacology Theodor Bilharz Research InstituteWarrak El Hadar.Imbaba.Egypt Department of Plant Protection Faculty of AgricultureAin Shams UniversityCairoEgypt Department of Environmental Research and Medical Malacology.Theodor Bilharz Research Institute Warrak El Hadar.Imbaba.Egypt

Objective:To test Candonocypris novaezelandiae(Baird)(***),sub-class Ostracoda,obtained from the Nile,Egypt for its predatory activity on snail,Biomphalaria alexandrina(***),intermediate host of Schistosoma mansoni(***)and on the free-living larval stages of this parasite(miracidia and cercariae).Methods:The predatory activity of *** was determined on *** snail(several densities of eggs,newly hatched and juveniles).This activity was also determined on *** miracidia and cercariae using different volumes of water and different numbers of *** was also tested for its effect on infection of snails and on the cercarial ***:*** was found to feed on the eggs,newly hatched and juvenile snails,but with significant reduction in the consumption in the presence of other diet like the blue green algae(Nostoc muscorum).This ostracod also showed considerable predatory activity on the free-living larval stages of *** which was affected by certain environmental factors such as volume of water,density of *** and number of larvae of the ***:The presence of this ostracod in the aquatic habitat led to significant reduction of snail population,infection rate of snails with schistosme miracidia as well as of cercarial production from the infected *** may suggest that introducing *** into the habitat at schistosome riskv sites could suppress the transmission of the disease.

关键词： Candonocypris novaezelandiae Schistosoma mansoni Biomphalaria alexandrina Biological control Schistosomiasis

In vitro efficacy of new synthetic benzimidazole-related compounds against Schistosoma mansoni adult worms

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Asian Pacific Journal of Tropical Medicine 2020年第12期13卷 566-572页

作者： Amira Taman samia El-Bardicy Menerva Tadros Magda Ayoub Basem Mansour Fouad El-Shehabi Samar NEl-Beshbishi Department of Medical Parasitology Faculty of MedicineMansoura UniversityMansoura 35516Egypt Department of Medical Malacology Theodor Bilharz Research InstituteImbabaCairoEgypt Department of Pharmaceutical Chemistry Faculty of PharmacyDelta University for Science and TechnologyGamasa CityMansouraEgypt Department of Biological Sciences and Biotechnology Faculty of ScienceThe Hashemite UniversityZarqa 13115Jordan

Objective:To evaluate the in vitro antischistosomal activity of two new synthetic benzimidazole-related compounds:NBTP-OH and ***:Schistosoma adult worms were recovered from mice infected with Schistosoma mansoni cercaria,washed and then incubated in the culture media with different concentrations of compounds NBTP-OH and NBTP-F up to 72 *** electron microscopy was conducted to report morphological ***:Incubation of adult Schistosoma mansoni with 10 μg/mL of NBTP-OH for 48 h killed 81.25% of *** calculated LC50and LC90 72 h post-incubation were 6.8 μg/mL and 9.8 μg/mL,*** of worms to 10 μg/mL of NBTP-F killed89.5% of worms after 48 h,mostly males(83.3%),the LC50 and LC90 after 72 h of incubation were 4.8 μg/mL and 6.9 μg/mL,*** incubated for 72 h with these compounds revealed swelling and deformity of oral sucker,disorganization and erosion of the tegument when examined with scanning electron ***:NBTP-OH and NBTP-F possess in vitro antischistosomal activities;however,in vivo studies should be conducted to examine their antischistosomal effects..

关键词： Schistosoma synthetic swelling

Energy-Efficient Content-Based Routing in Internet of Things

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Journal of Computer and Communications 2015年第12期3卷 9-20页

作者： samia Allaoua Chelloug Networks and Communication Systems Department College of Computer and Information Sciences Princess Nourah Bint Abdul Rahman University Riyadh KSA

The?convergence of the Internet, sensor networks, and Radio Frequency Identification (RFID) systems has ushered to the concept of Internet of Things (IoT) which is capable of connecting daily things, making them smart through sensing, reasoning, and cooperating with other things. Further, RFID technology enables tracking of an object and assigning it a unique ID. IoT has the potential for a wide range of applications relating to healthcare, environment, transportation, cities… Moreover, the middleware is a basic component in the IoT architecture. It handles heterogeneity issues among IoT devices and provides a common framework for communication. More recently, the interest has focusing on developing publish/subscribe middleware systems for the IoT to allow asynchronous communication between the IoT devices. The scope of our paper is to study routing protocols for publish/subscribe schemes that include content and context-based routing. We propose an Energy-Efficient Content-Based Routing (EECBR) protocol for the IoT that minimizes the energy consumption. The proposed algorithm makes use of a virtual topology that is constructed in a centralized manner and then routes the events from the publishers to the intended interested subscribers in a distributed manner. EECBR has been simulated using Omnet++. The simulation results show that EECBR has a significant performance in term of the energy variance compared to the other schemes.

关键词： Internet of Things Publish/Subscribe Routing Content-Based Routing Energy Virtual Topology Omnet++

Cone-beam computed tomography analysis of curved root canals after mechanical preparation with three nickel-titanium rotary instruments

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The Journal of Biomedical Research 2013年第4期27卷 326-335页

作者： samia M.Elsherief Mohamed K.Zayet Ibrahim M.Hamouda Department of Endodontics Faculty of Oral and Dental Medicine Cairo University Department of Endodontics Faculty of Dentistry Umm Al Qura University Lecturer of Radiology Faculty of Oral and Dental Medicine Cairo University Department of Dental Biomaterials Faculty of Dentistry Mansoura University Conservative Dentistry Department Faculty of Dentistry Umm Al Qura University

Cone beam computed tomography is a 3-dimensional high resolution imaging method. The purpose of this study was to compare the effects of 3 different NiTi rotary instruments used to prepare curved root canals on the final shape of the curved canals and total amount of root canal transportation by using cone-beam computed tomography. A total of 81 mesial root canals from 42 extracted human mandibular molars, with a curvature ranging from 15 to 45 degrees, were selected. Canals were randomly divided into 3 groups of 27 each. After preparation with Protaper, Revo-S and Hero Shaper, the amount of transportation and centering ability that occurred were assessed by using cone beam computed tomography. Utilizing preand post-instrumentation radiographs, straightening of the canal curvatures was determined with a computer image analysis program. Canals were metrically assessed for changes （surface area, changes in curvature and transportation） during canal preparation by using software SimPlant; instrument failures were also recorded. Mean total widths and outer and inner width measurements were determined on each central canal path and differences were statistically analyzed. The results showed that all instruments maintained the original canal curvature well with no significant differences between the different files （P=0.226）. During preparation there was failure of only one file （the protaper group）. In conclusion, under the conditions of this study, all instruments maintained the original canal curvature well and were safe to use. Areas of uninstrumented root canal wall were left in all regions using the various systems.

关键词： Rotary NiTi instrument canal curvature canal straightening

Validity of Approach to Maximize the ASR of the Order Superiorly Two in Discrete Nonlinear Systems

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International Journal of Modern Nonlinear Theory and Application 2014年第3期3卷 124-135页

作者： samia Charfeddine Lassaad Sbita College of Engineering/Electrical Engineering Unit of Photovoltaic Wind and Geothermal Systems ENIG Gabés Tunisia

This paper is, in fact, a proposal of a polynomial approach to the nonlinear systems control by using the concept of linearization by state feedback. In this context, a discretization method is presented. We developed a discrete control scheme based on an approximate feedback linearization method and the reversing trajectory method. The proposed control strategy sits on the methods of widening the stability domains of operating points. Such domains are expanded through the use of the non Lyapunov stability synthesis methods. Additionally, the developed technique is employed for the control of the class of systems with an order higher than two;more precisely, the example of a synchronous generator featured in a strongly nonlinear model.

关键词： Discrete-Time Systems Reverse Trajectory Method Nonlinear Polynomial Systems Asymptotic Stability Region (ASR) Synchronous Generateur

Accuracy of Doppler Ultrasonography in Assessment of Lower Extremity Peripheral Arterial Diseases

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International Journal of Clinical Medicine 2018年第6期9卷 505-512页

作者： samia Perwaiz Khan SafiaIzhar Jinnah Medical & Dental College (Medicare Cardiac & General Hospital) Karachi Pakistan

Doppler ultrasound scan is a non-invasive, cheap and convenient tool and it complements angiography, Computed tomography angiography (CTA), magnetic resonance angiography (MRA) and catheter digital subtraction angiography (DSA) in screening, diagnosis, treatment and follow-up of peripheral vascular diseases. Symptoms of peripheral vascular diseases are becoming more common due to rise in incidence of diseases and risk factors (diabetes mellitus, dyslipidemias, smoking, sedentary lifestyle). Due to limited availability of highly specific tools such as CT angiography, magnetic resonance angiography (MRA) and DSA (digital subtraction angiography) in many developing countries, doppler ultrasound is gaining more importance. Early determination of peripheral arterial diseases is beneficial in prevention of complications as severity increases may cause intermittent claudication, pain, tissue loss, including ulceration and gangrene (as the diseases progresses) and early management of arteriosclerosis will be beneficial to prevent these complications.

关键词： PAD Peripheral Arterial Diseases Doppler Ultrasonography T2DM Type 2Diabetes Mellitus

Dimensions of the Internationalization-Performance Relationship： Applied to Euronext 1 O0 Multinationals

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Management Studies 2014年第1期2卷 10-20页

作者： samia Belaounia Mehdi Nekhili Neoma Business School Mont-Saint Aignan France University of Reims Champagne Ardennes Reims France Neoma Business School Mont-Saint-Aignan France

New Formula for Evaluating the Number of Unit Cell of a Finite Periodic Structure Considered as Infinite Periodic One

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Journal of Electromagnetic Analysis and Applications 2011年第9期3卷 343-350页

作者： samia Bouali Taoufik Aguili 不详

This paper presents a modeling and an analysis of one-dimensional periodic structure composed of a cascade connection of N cells considered as infinite. The ABCD matrix representations with the Floquet analysis have been used to derive the dispersion relation and input impedance of infinite periodic structure. The transmission matrix for the N identical cascaded cells has been successfully used to obtain an efficient and easy-to-use formula giving the necessary number of cells such that they can be considered infinite. As an illustrative example, the formula is applied and verified to finite size TL periodically loaded with obstacles. Scattering parameters and the input impedance of the structure are expressed and plotted.

关键词： Periodic Structure Floquet Theorem Dispersion Relation Scattering Parameters Input Impedance

The Solar Cell Parameters as a Function of Its Temperature in Relation to Its Diurnal Efficiency

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Optics and Photonics Journal 2020年第1期10卷 1-12页

作者： samia Sayed Mustafa Shaban Physics Department Faculty of Education Aim Shams University Heliopolis Cairo Egypt

The variation of the temperature of the solar cell subjected to the incident global solar radiation along the local daytime in relation to its efficiency is studied. The heat balance equation is solved. The solution revealed that the cell temperature is a function of the maximum value of the daily incident global solar radiation qmax, the convection heat transfer coefficient (h), the optical, physical and the geometrical parameters of the cell. The temperature dependence of the short circuit current Isc, the dark saturation current Io, the open circuit voltage Voc, and the energy band gap Eg characterizing a Silicon solar cell is considered in evaluating the cell efficiency. Computations of the efficiency concerning operating conditions and astronomical locations (Egypt) as illustrative examples are given.

关键词： Solar Cell Performance Solar Energy Solar Cell Temperature Heat Transfer Model