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An Investigation of Verb Movement in Najdi Arabic
Author
القحطاني ، خلود أحمد ناصر
Supervisor
Dr. Mohammad Ali Easa Al Zahrani
Category
English Language - Linguistics
Type
Master
Year
2018
Hit
2
This thesis investigates the syntactic operation of verb movement in Najdi Arabic (henceforth, NA), a dialect spoken in the city of Riyadh. The thesis explores the inner characteristics of NA verb forms and the syntactic motivations behind their movement. It also sheds some light on the different positions of the subject within the TP boundary and higher than the TP boundary. I show how these different positions of the subject NPs yield different word order structures in NA. The thesis poses questions about sentences containing different cases of movement, and tries to investigate them. The investigation starts with presenting the syntactic structure of NA hierarchy using the X-bar Theory — a theory of syntactic structures which uses bar notation (Radford, 2009, p. 409). The investigation of the basic hierarchy for NA syntactic structure enables us to locate the original position of the NA verb forms and their thematic subjects. It then shows how verb movement occurs with reference to Chomsky’s Minimalist Program (1995) and its developments (2000, 2001). There are several assumptions that the thesis follows. It follows the assumptions that Arabic is considered to be a raising language, in which the verb movement operation applies (Fassi 1993, Rahhali & Souali 1997, Benmamoun, 2000, amongst others). It also follows the assumption that Verb-to-Tense movement in Arabic varieties is attributed to the assumption that Arabic has rich morphology (Bobaljik 2000 & Ryding(2005). The thesis adopts Al Zarhani’s (2013 & 2016) assumption that states that Arabic verbs are divided into two forms – past and non-past – which are expressed by perfective and imperfective forms respectively. Hence, the thesis shows the verb tenses and how they are associated with the perfective and imperfective verb forms, following Chomsky's (1995) argument that tense is specified for the categorical features [+D] (for nominal) and [+V] (for verbal). I also show how the dependency between tense and verb form explains verb movement from lower positions to T. With this in mind, I eventually argue that Najdi Arabic is a typical V-to-T language, and that the verb movement presents different NA word order structures. Ouhalla (1992) and Benmamoun (1999) propose that VS order is derived from V-to-T movement, where the verb moves to T for feature checking. For these investigations, the current study uses data by the researcher herself as a native speaker of the Najdi dialect. The data is checked with some Najdi relatives and friends. The ultimate results reveal that verb forms in Najdi Arabic are triggered to move to T or to some other different positions in the hierarchy depending on the verb needs
Analytic and numerical solutions for some nonlinear partial differential equations
Author
الثبيتي، علي عبدالله
Supervisor
Dr. Khaled Ahmad Gepreel / Dr. Taher Abd Alhameed Nofal
Category
Maths
Type
Master
Year
2018
Hit
0
The main objective of this thesis is to obtain the exact solutions and approximate solutions for some nonlinear partial differential equations, nonlinear partial fractional differential equation and nonlinear differential difference equations in mathematical physics. In chapter 1, we state some methods for finding the approximate and analytic exact solutions for nonlinear partial differential equations. In the second chapter, we use the modified rational Jacobi elliptic functions method to find some exact solutions for nonlinear differential difference equations in mathematical physics namely the lattice equation, the discrete nonlinear Schrodinger equation with a saturable nonlinearity, the discrete nonlinear Klein Gordon equation and the quintic discrete nonlinear Schrodinger equation. Some new types of the Jacobi elliptic solutions are obtained for some nonlinear differential difference equations in mathematical physics. The results of this chapter have been published in [1]. In the third chapter, we discussed the exact solutions for nonlinear PDE's in mathematical physics by using some new direct methods namely the extended coupled sub-equations expansion method and the modified simple equation method. The first part of this chapter, we have used the extended coupled sub-equations expansion method to get some series of double soliton-like solutions, double triangular function solutions and complexiton soliton solutions for some nonlinear partial differential equations via the (2+1)- dimensional breaking soliton equations and the (2+1)- dimensional Nizhnik-Novikov- Vesselov equations. We obtain many types of double soliton solutions as various combination of trigonometric periodic function and hyperbolic function, various combination of trigonometric periodic function and rational function, various combination of hyperbolic function and rational function. The results of this subsection have been published in [2]. The second part of this chapter, we have used the modified simple equation method to construct the exact traveling wave solutions for some nonlinear PDE's in mathematical physics namely the coupled Higgs equations, the coupled Maccaris equations and the Drinfeld–Sokolov system. Based on this formulation, solitary solutions can be easily obtained by using the proposed method. The proposed method is direct and more powerful than the other methods. The results of the second part of this chapter have been submitted for published in [3]. In the fourth chapter, we have studied some exact and approximate solutions for nonlinear partial fractional differential equations. The first part of this chapter, we implement relatively analytical techniques such as the homotopy perturbation method and homotopy analysis method to solve nonlinear partial fractional differential Zakharov-Kuznetsov equations. The fractional derivatives are described in the Caputo sense. We have compared between the approximate solutions which obtained by the homotopy perturbation method and the approximate solutions which obtained by homotopy analysis method. Also we make the Figures to compare between the approximate solutions. We compare between the approximate solutions and the exact solutions for the partial fractional differential equations when , , 1. The results of the first part of this chapter have been submitted for published [4] . The second part of this chapter according to the local fractional derivative and the fractional sub-equation method, we have obtained some of the exact solutions for nonlinear partial fractional differential equations namely the space–time fractional coupled Sakharov- Kuznetsov (Z-K) equations, the space–time fractional nonlinear coupled KdV equations and the space–time fractional Hirota Satsuma KdV system. As a result, three families of exact analytical solutions are obtained. The results of the second part of this chapter have been submitted for published in [5].
Analytic and numerical solutions for some nonlinear partial differential equations
Author
الثبيتي، علي عبدالله
Supervisor
Dr. Khaled Ahmad Gepreel / Dr. Taher Abd Alhameed Nofal
Category
Maths
Type
Master
Year
2012
Hit
0
The main objective of this thesis is to obtain the exact solutions and approximate solutions for some nonlinear partial differential equations, nonlinear partial fractional differential equation and nonlinear differential difference equations in mathematical physics. In chapter 1, we state some methods for finding the approximate and analytic exact solutions for nonlinear partial differential equations. In the second chapter, we use the modified rational Jacobi elliptic functions method to find some exact solutions for nonlinear differential difference equations in mathematical physics namely the lattice equation, the discrete nonlinear Schrodinger equation with a saturable nonlinearity, the discrete nonlinear Klein Gordon equation and the quintic discrete nonlinear Schrodinger equation. Some new types of the Jacobi elliptic solutions are obtained for some nonlinear differential difference equations in mathematical physics. The results of this chapter have been published in [1]. In the third chapter, we discussed the exact solutions for nonlinear PDE's in mathematical physics by using some new direct methods namely the extended coupled sub-equations expansion method and the modified simple equation method. The first part of this chapter, we have used the extended coupled sub-equations expansion method to get some series of double soliton-like solutions, double triangular function solutions and complexiton soliton solutions for some nonlinear partial differential equations via the (2+1)- dimensional breaking soliton equations and the (2+1)- dimensional Nizhnik-Novikov- Vesselov equations. We obtain many types of double soliton solutions as various combination of trigonometric periodic vi function and hyperbolic function, various combination of trigonometric periodic function and rational function, various combination of hyperbolic function and rational function. The results of this subsection have been published in [2]. The second part of this chapter, we have used the modified simple equation method to construct the exact traveling wave solutions for some nonlinear PDE's in mathematical physics namely the coupled Higgs equations, the coupled Maccaris equations and the Drinfeld–Sokolov system. Based on this formulation, solitary solutions can be easily obtained by using the proposed method. The proposed method is direct and more powerful than the other methods. The results of the second part of this chapter have been submitted for published in [3]. In the fourth chapter, we have studied some exact and approximate solutions for nonlinear partial fractional differential equations. The first part of this chapter, we implement relatively analytical techniques such as the homotopy perturbation method and homotopy analysis method to solve nonlinear partial fractional differential Zakharov-Kuznetsov equations. The fractional derivatives are described in the Caputo sense. We have compared between the approximate solutions which obtained by the homotopy perturbation method and the approximate solutions which obtained by homotopy analysis method. Also we make the Figures to compare between the approximate solutions. We compare between the approximate solutions and the exact solutions for the partial fractional differential equations when , , 1. The results of the first part of this chapter have been submitted for published [4] . The second part of this chapter according to the local fractional derivative and the fractional sub-equation method, we have obtained some of the exact solutions for nonlinear partial fractional differential equations namely the space–time fractional vi coupled Sakharov- Kuznetsov (Z-K) equations, the space–time fractional nonlinear coupled KdV equations and the space–time fractional Hirota Satsuma KdV system. As a result, three families of exact analytical solutions are obtained. The results of the second part of this chapter have been submitted for published in [5].
Analytic Methods For Nonlinear Evolution Equations In Mathematical Physics
Author
السيالي، نهال سعد معيوض
Supervisor
Dr. Khaled A. Gepreel / Dr. Taher A. Nofal
Category
Maths
Type
Master
Year
2017
Hit
0
The main object of this thesis is to obtain the exact solutions for nonlinear partial differential equations and approximate solutions for the nonlinear partial fractional differential equations. In this thesis we use a different methods to solve the nonlinear partial differential equation such as extended trail equation method, multiple expansion function method, extended (G /G) expansion function method. Also, we use the reduced differential transform method for discuss the approximate solutions for the nonlinear partial fractional differential equations. We compare between the approximate solutions and exact solution for nonlinear partial fractional differential equations. We get the reduced differential transform method is rapidly convergence to exact solution. We make some figures to illustrate the comparison between exact and approximate solutions.
Analytical and Numerical Solutions of Constrained Parabolic Optimal Control Problems
Author
الثبيتي، فهد باخت محيل
Supervisor
Dr.Moustafa Mohammad Moustafa / Dr.Mohamed A. El-Sayed
Category
Maths
Type
Master
Year
2018
Hit
0
Recent years, there are wide applications of Optimal control like in biology, engineering, aerospace, physics, chemistry, economics and other areas of science and has received considerable attention of researchers. In this thesis, a proposed system of optimal control problem with respect to a parabolic equation is obtained. The existence and uniqueness of the system is introduced. In this way, the uniqueness theorem for solving parabolic optimal control problem is presented. Therefore, the theorem for the sufficient differentiability conditions has been proved. By using the exterior penalty function method, the constrained problem is converted to a new unconstrained problem. The variation of the functional and its gradient is presented. Lipchitz continuity of the gradient of the cost functional is derived. The common techniques of constructing the gradient of the cost functional using the solving of the adjoint problem is investigated a computational approach based on an exterior penalty function with modified partial quadratic interpolation method is given for solving a class of a constrained parabolic optimal boundary control problem which the final profile can be a nonlinear or linear function. Also, it is applied to solving the inverse heat conduction problem. The outlined of the algorithm for solving the optimal control problem and its convergence is given. Numerical results for constrained optimal control parabolic problems are obtained. All results are carried out using ForTran Language.
Analytical and Numerical Study for Some New Problems in Dynamical Systems Described by Some Differential Equations
Author
الأسمري ، فاطمة سعيد عبود
Supervisor
د . عماد الدين محمود
Category
Maths
Type
Master
Year
2017
Hit
1
In this thesis, we introduce and analyze a novel chaotic complex nonlinear system. The dynamics of this system is rich in the sense that our system exhibit chaotic attractors as well as periodic, quasi periodic solutions and solutions that approach fixed points. The stability analysis of the trivial fixed pointis stated. Numerically the range of parameters values of this system at which chaotic attractors exist is calculated. Lyapunov exponents are computed to classify the dynamics of this system. Symmetry, invariance and dissipation are discussed The principal target of this work is to introduce and examine a novel kind of complex synchronization. This sort may be called complex anti lag synchronization (CALS). There are surprising properties of CALS that do not exist in the writing, for example, (i) The CALS contains two sorts of synchronizations (anti-lag synchronization ALS and lag synchronization LS). (ii( In CALS the attractors of the main and slave systems are moving opposite or similar to each other with time lag. (iii) The state variable of the main system synchronizes with a different state variable of the slave system. We introduce and examine another kind of complex synchronization. We call this type complex modified projective lag synchronization (CMPLS). CMPLS, which is a more general case of synchronizations, is rarely studied or not mentioned up to date. In order to show this synchronizatio n, we study it to a system with certain and uncertain parameters of two chaotic complex n-dimensional flows possessing chaotic attractors with varying totally or partially in nonlinear terms The thesis consists of five chapters: Chapter one: In this chapter we show the preliminaries of nonlinear dynamical systems. We give a review of some basic concepts and definitions of nonlinear dynamical systems such as fixed points, Lyapunov functions, attractors, Lyapunov exponents, chaotic systems, hyperchaotic systems, secure communications, chaos and synchronization Chapter two: This chapter introduces and analyzes a new chaotic complex nonlinear system. This system is 6 dimensional systems of real first order autonomous differential equations. The dynamics of this system are contemplated. The Lyapunov dimension of the chaotic attractors of these systems is calculated. We presented different types of our system. Also, we introduced a definition of a new type of synchronization and studied it on our system. An approach proposed to analyze CALS of the complex system in light of Lyapunov function . Chapter three: The aim of this chapter is to investigate CALS with uncertain parameters. A definition of CALS with uncertain parameters is introduced for two identical chaotic complex nonlinear models. Based on Lyapunov function a scheme is designed to achieve CALS of chaotic attractors of these systems. The effectiveness of the obtained results is illustrated by a simulation example. The chaos synchronization results were employed to develop a simple application in secure communication. Chapter four: In this chapter, we present and investigate the definition of a new type of complex synchronization. We may call this type "complex modified projective lag synchronization (CMPLS)". We design schemes to achieve CMPLS of two chaotic complex systems with varying in nonlinear terms and with certain and uncertain parameters. We applied these schemes to study CMPLS on two chaotic complex nonlinear systems with certain and uncertain parameters. All the analytical results are verified by numerical simulation of our examples Chapter five: In this chapter, we conclude our main results and suggest some future works.
Anatomical Studies on the Cranial Nerves and Ganglia of the Head Region of the Lizard Uromastyx aegyptia microlepis
Author
الوقداني ، إيمان أحمد سند
Supervisor
Dr. Nahed A. Hussien - Prof. Dr. Ahmed E. Dakrory
Category
Biology
Type
Master
Year
2015
Hit
0
Anatomical Studies on the Cranial Nerves of Oreochromis niloticus (Ostiechthyes – Cichlidae)
Author
المالكي، غرسه جابر أحمد
Supervisor
Prof. Dr. Ahmed Emam Ahmed Dakrory / Dr. Thrwat Ghanem Abdelkader
Category
Biology
Type
Master
Year
2017
Hit
0
The organization of the roots, ganglia and the peripheral distribution of the cranial nerves in the fully formed embryos of Oreochromis niloticus are examined in the serial transverse sections. The analysis of the fibres carried by these nerves is studied. The results of this study demonstrated that the olfactory peduncle is absent. There is a complete optic deccussation. The ciliary ganglion is well formed and has one ciliary nerve. The nervus trigeminus has a single extracranial Gasserian ganglion. The intracranial geniculate ganglion of the facial nerve is partially fused with the ganglion of the anteroventral lateral line nerve. There is only one ramus palatinus that fuses with ramus maxillaries of the nervus trigeminus. The truncus hyomandibularis separates into three rami; opercularis, hyoideus and mandibularis. The nervus octavus runs ganglionated and has six branches and has no branch of macula neglecta. The nervus glossopharyngeus has one root, and has its own foramen and one extracranial petrosal ganglion. This nerve has three rami; ramus pretrematicus, ramus posttrematicus and ramus pharyngeus. The nervus vagus arises separately by two roots.It leaves the cranial cavity together with the posterior lateral line nerve through the jugular foramen. It has three branchial and one visceral trunks; each has its own ganglion. Each branchial vagal trunk gives rise to four rami; pharyngeus, lower pretrematic, upper pretrematic and posttrematic. There is an intracranial dorsal vagal ramus. There are two pairs of lateral line nerves; anterior and posterior and the middle lateral line nerve is lacking. The anterior lateral nerve divides into anterodorsal and anteroventral lateral line nerve. The anterodorsal lateal line nerve gives rise to three rami; ophthalmicus superficialis lateralis, buccalis and recurrence lateralis. The anteroventral line nerve fuses completely with the hyomandibular trunk of the nervus facialis.
Antibacterial activity of silver nano-particles against some species of family Enterobacteriaceae isolated from different sources at Taif Kingdom of Saudi Arabia
Author
النمري ، أحلام حسن
Supervisor
Prof.Dr. Moataz Hassan Ahmed EL-Sehrawy -Dr. Abeer Ahmed Abu Zaid
Category
Biology
Type
Master
Year
2016
Hit
1
The present study aimed to Biosynthesis of silver nano particles by using some plant extracts , of Elettaria cardamomum , Laurus nobilis and Rosmarinus officinalis and assessment their antibacterial activity and cytotoxicity. The presence of silver nano particles was initially confirmed by colored developed from colorless to dark brown within the first 10 min , then by UV- VIS spectrometer and Transmission electron microscope (TEM). Laura silver nano particles were showed the sharp peak around 411 nm with high density. TEM images exhibited the nano particles synthesized by each plant extract were relatively spherical in shape and ranged size (15-50 nm). Twenty two bacterial strains (A01-A22) were isolated from juices, fruits and vegetables salad in restaurants at governorate Taif Kingdom of Saudi Arabia, then characterized by morphology, biochemical reactions and confirmed by API 20 E system. Further the strains were identified by partial 16SrRNA gene sequencing and phylogenetic tree analysis. All isolates were identified by 95-99% identity, except strain A13 was not complete. Eleven isolates out of twenty two were identified as K. pneumnoniae, nine were K. quasipneumnoniae, and only one named by K. oxytoca. Ten bacterial strains (A23-A32) were isolated from urine in Maternity and Children Hospital at Makkah City-Kingdom of Saudi Arabia, then characterized by morphology, biochemical reactions and confirmed by Microbact assay. All isolates were identified with type strain of Escherichia coli. In addition, antibiotic resistance profiles of isolated strains were determined. Thirty two isolates were resistance to Penicillin G and Erythromycin, except Escherachia coli 24A. The highest number of antibiotics resistance were recorded by E.coli A32 and A30, which displayed multidrug resistance against 7, 8 types of antibiotics used in this study respectively . In conclusion, the antibacterial activity of each plant extract as aqueous plant extract, plant extract with silver nano particles, and their concentrations as well as chemical silver nano particles were evaluated against 32 isolates. The highest significant degree of growth inhibition at concentration (9:1) which contain 1 Mm from AgNO3 of Biosynthesis Cardamom Nano Silver Particles (BCNSP) was showed against all bacterial strains (26-37mm), except strain NO. A08, A20 and A24 were about (11mm). The correlation between BCNSP and viability of VERO cell line is negative and highly significant, where “r” value = -0.9029, where at 3.125µg/ml concentration BCNSP was showed 100% viability of VERO cell line .This suggests that silver nano particles from cardamom extract have great potential to act a safe alternative to antibiotics to fight the challenges of drug resistance. In addition, the applications includes also used in food industry as disinfection by adding to soap or sanitizer, for cleaning utensils and treatment waste , storage water. These results urge the testing of these green nano particles in vivo.
Antibacterial Effect of Silver Nanoparticles against Methicillin- Resistant Staphylococcus aureus Isolated from Different Sources at Taif Governorate
Author
نزار ، فريبا أمان الله حق
Supervisor
Prof. Dr. Nashwa abdelsalam ezzeldeen - Dr. Abeer Ahmed Abu Zaid
Category
Biology
Type
Master
Year
2016
Hit
0
In this study, fifty-one samples of milk collected from various sources, and to study the spread of the bacteria Staphylococcus aureus rate, which was the most important causes of mastitis. From the results, bacterial strains (F1-F14) were isolated from milk as follows: 9 camel, 3 goat and 1 both cow and sheep. The isolates characterized by morphology, biochemical reaction and identified by molecular methods. In vitro the susceptibility of S. aureus strains were done against 9 antibiotics. The results showed that all milk strains (14) were sensitive to ciprofloxacin, followed by tetracycline 64.3 %. While, the resistant strains (14) were against amikacin and oxacillin 100% followed by gentamicin 92.9 %. Antibacterial activity of aqueous each plant extract (cardamom, rosemary and laura) were done against 14 strains of S. aureus. The results were did not record any effect, while the chemical silver nanoparticle (AgNPs) gave different antibacterial activity against all strains. In addition, the synthesized plant AgNPs showed significant antibacterial effect against all bacterial strains. Using of UV Vis Spectroscopy and Transmission Electron Microscope (TEM) techniques to characterized the green synthesized nanoparticles. In vitro, cytotoxic effects of AgNPs were screened against Vero cells. The chemical, cardamom, rosemary and laura silver nanoparticles were able to reduce viability of the Vero cells in a dose-dependent manner.
Antibacterial Effect of Silver Nanoparticles against Methicillin- Resistant Staphylococcus aureus Isolated from Different Sources at Taif Governorate
Author
نظر، فريبا أمان الله حق
Supervisor
Prof. Dr. Nashwa abdelsalam ezzeldeen / Dr. Abeer Ahmed Abu Zaid
Category
Biology
Type
Master
Year
2016
Hit
0
In this study, fifty-one samples of milk collected from various sources, and to study the spread of the bacteria Staphylococcus aureus rate, which was the most important causes of mastitis. From the results, bacterial strains (F1-F14) were isolated from milk as follows: 9 camel, 3 goat and 1 both cow and sheep. The isolates characterized by morphology, biochemical reaction and identified by molecular methods. In vitro the susceptibility of S. aureus strains were done against 9 antibiotics. The results showed that all milk strains (14) were sensitive to ciprofloxacin, followed by tetracycline 64.3 %. While, the resistant strains (14) were against amikacin and oxacillin 100% followed by gentamicin 92.9 %. Antibacterial activity of aqueous each plant extract (cardamom, rosemary and laura) were done against 14 strains of S. aureus. The results were did not record any effect, while the chemical silver nanoparticle (AgNPs) gave different antibacterial activity against all strains. In addition, the synthesized plant AgNPs showed significant antibacterial effect against all bacterial strains. Using of UV Vis Spectroscopy and Transmission Electron Microscope (TEM) techniques to characterized the green synthesized nanoparticles. In vitro, cytotoxic effects of AgNPs were screened against Vero cells. The chemical, cardamom, rosemary and laura silver nanoparticles were able to reduce viability of the Vero cells in a dose-dependent manner.
Assessment of Environmental Pollution of Air in Taif City using Different Spectroscopic Techniques
Author
المعلوي، ضيف الله رحيم عبدالرحمن
Supervisor
Dr. Abdallah A. M. Shaltout / Dr. Zuhair F. M. Shehadeh
Category
physics
Type
Master
Year
2013
Hit
0
This work describes the first initiative project conducted to evaluate the trace element composition of atmospheric aerosol particles (PM2.5) and to determine their influence on air quality in Taif city, Saudi Arabia. PM2.5 particles were collected from two different sites (industrial and residential) in Taif in the period from June 2011 to June 2012 covering the four different seasons of the year. PM2.5 samples were collected on polycarbonate filters using a cyclonic collector. Each sample was collected over a 24 hour period and new samples were collected weekly. The averages mass concentrations of PM2.5 measured in that period were 42.72 ±30.6 μg/m3 and 46.70 ± 32.27 μg/m3 for the residential and industrial sites, respectively. Different spectroscopic techniques have been used, namely; Energy Dispersive X-ray Fluorescence (EDXRF) spectrometer with a Mo secondary target, black smoke detector for carbon measurements, Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), and Electron Paramagnetic Resonance (EPR) spectroscopy. From the elemental analysis point of view, EDXRF was used to analyze the solid samples because of the relative simplicity of the technique for filter analysis. Quantitative X-ray Analysis System, (QXAS) was used. For the determination of the net peak areas of characteristic lines of interest the Analysis of X-ray spectra by Iterative Least-squares fitting (AXIL) software package is utilized. The analysis resulted in detected concentrations for twenty five elements, namely; Si, P, S, Cl, K, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Se, Rb, Sr, Y, Ba, Ta, Pb and black carbon (BC). Fortunately, the measured concentrations of the potentially hazardous trace elements As, Cu, Cr, Mn, Ni and Pb were below the limits defined by international guidelines and national standards of ambient air quality. The diffraction patterns of the polycarbonate filters with and without atmospheric aerosol samples are identical and, therefore, there is a remarkable difficulty to identify the XRD patterns of the small quantity of the PM2.5 samples. Based on Scanning Electron Microscope (SEM) results, the dimensions of the collected aerosol particles in the polycarbonate filter are varied up is 10 μm. The interpretation of the large particle size is due to the combination between the individual particles on the polycarbonate filter. According to EPR measurements, three remarkable signals were detected and identified. Using Pearson’s correlation coefficients and Principal Component Analysis (PCA), it was possible to distinguish between natural and anthropogenic.
Assessment of Natural Radioactivity Level from Different Environmental Sources in Al-KHURMAH Region
Author
السبيعي، حمود حميدان صالح
Supervisor
Prof. Abdulkadir S. Aydarous / Prof. Amar Merazga
Category
physics
Type
Master
Year
2018
Hit
0
The assessment of radioactivity level in Al-Khurmah is unprecedented and has been achieved using both portable scintillation gamma radiometer (SGR) and high resolution gamma spectrometry. The assessment of radiological health hazard and impact have been studied from different perspectives through the investigation of the radioactivity concentrations of 226Ra, 232Th and 40K for 29 soil samples from chosen areas in Al-Khurmah. From the measured gamma rays spectra, the activity concentrations were determined for 226Ra(1.6 to 14.1 Bq.kg-1), 232Th(1 to 9.6 Bq.kg-1), and 40K (55.6 to 477 Bq.kg-1). The radium equivalent activity, the mean outdoor terrestrial gamma dose rate and the corresponding outdoor annual effective dose, the external and internal hazard indices were 42.1 Bq.kg-1, 21.2 nGy.h-1, 0.03 mSv.y-1, 0.12 and 0.13 respectively. In conclusion, Al-Khurmah region has low natural radioactivity levels and do not pose any radiation hazards to the public. While the soil samples activity concentrations from around Taghdoua mountain ranged from 6.4 to 54.1 Bq.kg-1 for 226Ra, 6.5 to 51.5 Bq.kg-1 for 232Th and 299.2 to 760.5 Bq.kg-1 for 40K. The overall is 36.1 nGy.h-1 and the corresponding outdoor annual effective dose is 0.04 mSv.y-1. The mean activity concentrations of 226Ra, 232Th and 40K in the rock samples from Taghdoua mountain were 1487 Bq.kg-1, 2450 Bq.kg-1 and 1183 Bq.kg-1, respectively. The absorbed dose rates in outdoor air 1 m above the ground for rocks from Taghdoua mountain are far higher than the permissible limit with a mean value of 2216 nGy.h-1. The mean radium equivalent (Raeq), for rocks from Taghdoua mountain was determined as 5082 Bq.kg-1 forbidding completely their use as building material.
Assessment of teratogenic and genotoxic effects of anti- depressant drug (imipramine) on albino rat fetuses
Author
الشهري ، دلال علي فراج
Supervisor
Dr. Hamida Hamdi Mohammed Ismail - Dr. Nahed Ahmed Hussien Ahmed
Category
Biology
Type
Master
Year
2018
Hit
0
Assessment the potentiality of phytosteroids to inhibit proliferation of leiomyoma cells in vitro
Author
الحارثي، شذا ضيف الله
Supervisor
Prof. Dr: Aziza Mohamed Mahmoud Hassan
Category
Biology
Type
Master
Year
2016
Hit
0
Leiomyoma is the most common benign tumor in women of reproductive age. Although it is not malignant disease, for one-third of these women, the tissue fibrosis may cause several reproductive and gynecological problems. Since there is no effective pharmacological treatment of the leiomyomas usually they are subject for hysterectomy. This warrants the need for discover an alternative hormonal replacement therapy with a safe and effective non-surgical treatment. Trigonella foenum commonly known as fenugreek has been widely used for the edible and medicinal values of its seeds. Several studies have shown that fenugreek seeds provide anticancer properties. However, very little is known about its hormonal effect. The present study aimed to investigate the effect of fenugreek seeds extract (FSE) and genistein (GSE) extract, as an alternative to hormone replacement therapy, each alone or in combination with conventional therapeutic drug (Danazol) on the proliferation of leiomyoma cells in vitro. The Human Uterin Leiomyoma cell line (UtLM) was used. Cell proliferation and viability were assessed by counting the number of cells and MTT assay after 24, 48 and 120 h. The expression of apoptotic genes and cell cycle regulating genes were also evaluated to understand the molecular mechanism by which the previous extracts influence the proliferations of the UtLM cells. The present results showed that both extracts, each alone or together with Danazol, were successfully able to reduced proliferation and viability in the UtLM cells as a time depentant manner. Also, they significantly increased the percentage of the DNA freagmentation in the combined with the upregulation of the the apoptotic genes. Moreover, the combinations of both extracts with Danazol improve the effectiveness and sensitivity of conventional therapy and suggests that combined therapy may help to achieve the recommended goals in the management of leiomyoma.