In this paper, a mathematical model consisting of harmful phytoplankton and two competing zooplankton is proposed and studied. The existence of all possible equilibrium points is carried out. The dynamical behaviors of the model system around biologically feasible equilibrium points are studied. Suitable Lyapunov functions are used to construct the basins of attractions of those points. Conditions for which the proposed model persists are established. The occurrence of local bifurcation and a Hopf bifurcation are investigated. Finally, to confirm our obtained analytical results and specify the vital parameters, numerical simulations are used for a hypothetical set of parameter values.

The  study  concentrated  on  measuring  the  lipid  peroxidation marker malon di aldehyde (MDA) in sera of thirty five patients with minor Thalassemia  (Tm), thirty five with major Thalassemia (TM) and thirty five healthy control, their age ranged from (17-30) years. Erythrocytes  enzymes  (Glutathione  -S   - transferase  (GST  )and Catalase) were assayed . The results showed a significant elevation in (MDA) in sera of both patient groups compared to control.

An  increase in the activity of catalase and GST in erythrocytes of

minor Thalassemic patients compared to control was found to be significant. Also, a high significant increase in the

The recent development in statistics has made statistical distributions the focus of researchers in the process of compensating for some distribution parameters with fixed values and obtaining a new distribution, in this study, the distribution of Kumaraswamy was studied from the constant distributions of the two parameters. The characteristics of the distribution were discussed through the presentation of the probability density function (p.d.f), the cumulative distribution function (c.d.f.), the ratio of r, the reliability function and the hazard function. The parameters of the Kumaraswamy distribution were estimated using MLE, ME, LSEE by using the simulation method for different sampling sizes and using preli

Cefixime (CFX) was treated with sodium nitrite and hydrochloric acid for diazotization reaction followed by coupling with ?-Naphthol in alkaline medium to form, a yellow colored azo dye compound which exhibits maximum absorption (?_max) at 412 nm where the concentration of (CFX) was determined spectrophotometrically. The optimum reaction conditions and other analytical parameters were evaluated. Beer’s law was obeyed in the concentration range of (1-20) ?g.mL^-1 with a molar absorptivity of 34870.5 L.mol^-1.cm^-1. The limit of detection was found to be 0.1090 ?g.mL^-1 and the Sandell's sensitivity value was 0.0130 ?g.cm^-2. The proposed method could be successfully applied to

Background: Idiopathic thrombocytopenic purpura , a disorder characterized by autoantibody mediated platelets destruction causing decreased number of circulating platelets manifest as bleeding tendency. Since the discovery of Helicobacter pylori (H. pylori ) several studies have been published concerning a hypothetical role of this bacteria in idiopathic thrombocytopenic purpura.
Aim of the study: Evaluate the pathogenic correlation between H.pylori infection and idiopathic thrombocytopenic purpura.
Patients and Method: A cross sectional study was done on 30 cases of idiopathic thrombocytopenic purpura admitted to the Pediatric Hemato-Oncology unit in ALKadhimiyia Teaching Hospital and 20 cases of

Background:

Medical identification  is deemed  of  the most important evidences   in the criminal  investigation   on massive  cemeteries, as it is identified  the   unknown  individuals   either alive or died. Whereas the victims of  massive cemeteries are individuals were murdered  and then buried or  buried   alive and  thence   identifying   the bodies of the victims   should be evaluated   technically  and  need   medical experience  by checking  its   apparently or  internally (anatomically)  by  expert (Forensic  Medical Doctors)  to ma

Capacitive–resistive humidity sensors based on polythiophene (P3HT) organic semiconductor as an active material hybrid with three types of metallic nanoparticles (NP) (Ag, Al, and Cu) were synthesized by pulsed laser ablation (PLA). The hybrid P3HT/metallic nanoparticles were deposited on indium-tin-oxide (ITO) substrate at room temperature. The surface morphology of theses samples was studied by using field emission scanning electron micrographs (FE-SEM), which indicated the formation of nanoparticles with grain size of about 50nm. The electrical characteristics of the sensors were examined as a function of the relative humidity levels. The sensors showed an increase in the capacitance with variation in the humidity level.  While

Background: Migraine is a common debilitating disorder characterized by attacks of mostly unilateral, moderate to severe, throbbingheadaches. The diagnosis of migraine is made according to the third edition of the International Classification of Headache Disorders developed by the International Headache Society. There are several types of migraine, the most common of which are migraine without aura and migraine with aura.

Objectives: This study aims to find the correlations between quantitative EEG changes and cognition in migraine patients.

Patients and Methods: The study included 20 migraine patients,10 during pain attack (ictal phase) and 10 during pain-free period (inte

Background: Colorectal is a worldwide health problem. Tumors stimulate the ground of host blood vessels, a process called angiogenesis, which is essential for supplying nutrients of the tumor, also stimulate the lymphatic vessels for metasatasis.