The purpose of this research is to develop and use two generalized Rational Models (GRM I,
GRM II), each of which is a realizable mathematical model, not available with other models, and
we will demonstrate its utility and applicability on a large
scale, compared to other ( -shaped)
models, and converging well.
The aim of this study was to study the plant species diversity at Al-Kahaf protected
area in A-Sheikh Badr region, Tartous governorate, in terms of functional
characteristics of the recorded plant species, its uses. The results can contribute
in u
nderstanding, and determining the role of those plant species for ecosystem
function and local community and help in the management of this protected area.
Plant species diversity was studied on three versants; using the intercepted line
method; and in the watercourses surrounding Al Kahaf castle. Additional surveys
have also been conducted over the whole site. Life forms, dispersal types, and the
uses of these species were recorded. The recorded species belong to 53 plant family.
Fabaceae was the most represented family (17 species), followed by Asteraceae
(12 species), and Lamiaceae (11 species).
In this article, we propose a powerful method called
homotopy perturbation method (HPM) for obtaining the
analytical solutions for an non-linear system of partial
differential equations. We begin this article by apply HPM
method for an important models of linear and non-linear
partial differential equations.
This research is based on experimental results of magnetization and magnetic susceptibility of ferrite slab prepared in a previous work with a computerized simulation to find the influence of ferrite slab on a microwave propagation in terms of determ
ining the behavior of attenuation factor .A slab of ferrite Co0.6Zn0.4Fe2O4were prepared by classical ceramic method. We have studied an influence of slab of the CoZn-ferrite its thickness is , loaded in a rectangular waveguide on a propagation of microwaves. The values of the reverse and forward attenuation factor has been found. After that, we choose the location of the slab X0 inside the guide which means the optimum status of microwave propagation has been reached at .
This research aims to study the effect of adding Zinc Borate and
Aluminum Hydroxide as flame retardants to Low Density
polyethylene.
Specimens have been prepared through pouring them in a mold.
Results have revealed that replacement of certain am
ount of
Aluminum Hydroxide with Zinc Borate could lead to improving the
resistance of flame spread in Low Density polyethylene.
these improvements were basically due to further contribution of
Zinc Borate to the physical barrier mechanism of Aluminum
Hydroxide in both gas and solid phases.
It was found in this research that the seismic response of the
structure increases with the decrease in the shear waves velocity in
the soil, and the seismic response of the structure increases with
soil layer thickness between the foundations of the structure and
bedrock depth.
This study was conducted to determine the prevalence and stages of chronic kidney disease and to identify common causes of chronic kidney disease in patients as well as the study of risk factors for the disease. The study included 1314 patients have
been admitted to the Department of Internal Medicine at al-Assad University Hospital in Lattakia where they were diagnosed with chronic renal disease patients at 120 of them by 9.1%. The causes of chronic kidney disease were: diabetes 41.7%; hypertension 30%; Glomerulonephritis 11.7%; obstructive uropathy 5%; and Glomerugenetic disease 3.3%; mm3.3%; polycystic kidney d isease3.3% ; idiopathic 1.7%. Chronic kidney disease stages 1; 2; 3; 4; 5; were: 10%; 21.7%; 33.3% 20%; 15% respectively. Risk factors were: advanced age (over 50) 75%; high blood sugar 53.3%; lack of blood albumin 65%; hypertension 38.3%; family history of chronic kidney disease 25%; high triglycerides and cholesterol 11.7% .
This study was conducted on domestic pigeons populations in
the provinces of Hama, Idlib and Latakia using several
conventional diagnostic techniques , including pathological
examination tests and agar gel immune diffusion test and isolation
on c
hicken embryo. The number of suspected birds to be
infected by pigeon pox through clinical symptoms and macroscopic
lesions were about 37 birds. we noticed the presence of lesions
in warts and scars on the nonfeather parts of the face and on the
corner of the mouth and eyelids and other areas of the body. the
most of these accompanied by the presence of the of defteric
lesions on the mucous membrane of the oral cavity.
The results showed that all birds suffered from the presence of
infection fowlpox through histological examination of skin and
difteric lesions. the results has been confirmation by agar gel
immune diffusion test. And we successfully isolated the virus that
caused the disease by injection on the Chorioallantoic membrane
of a chicken's egg fertilized SAN.
As dental caries are among the most common chronic diseases, the study of their prevalence and severity in a specific population area can contribute to constructing necessary plans for treatment and prevention.
This study aimed to assess the rate
of prevalence and severity of dental caries in
13 -15 years – old children in Lattakia City and to study the effects of the different factors and their relation to the grade of the severity of the dental caries.
The study was conducted on 1680 children. The sample was divided into four main groups, depending on the grade of severity of the dental caries. The analysis of data showed that the prevalence of dental caries was 67.1±1.92% and the DMFT value was 2.35. The study also showed that mother feeding, the factor of dental care and socioeconomical factors are important in all groups
In the present work, a modification of a previously developed electron cascade model
is presented. More than one electronic state is incorporated in the model as well as various
loss processes. Thus, new inelastic process such as photo ionization a
nd electron impact
ionization of the electronic excited state of the argon atom are considered. Moreover, loss
processes which may act to deplete the number of electron such as electron diffusion; three
body recombination and dissociate recombination are taken into account. All these
processes are incorporated into the time-dependent Boltzmann equation which is solved
numerically simultaneously with set of rate equations for both the electron energy
distribution function (EEDF) and the excited state population respectively.
