Because of the contaminants represented by heavy metals in the aquatic
environment have an adverse effects need to be addressed, therefore, a laboratory
simulation was conducted on Cd using kaolinite that collected from Ga’ara Formation
as considered as a natural sorbent material that can be used to remove heavy metals
from aqueous environments. Mineralogical study was conducted on kaolinite using
X-Ray diffraction (XRD), Scanning Electron Microscope (ESM) and Energy-
Dispersive X-ray Spectroscopy (EDS) for the purpose of investigating the microtexture.
It was found that kaolinite has pure phase of very fine grains with a very little
quantity of quartz and has a number of active sites for adsorption. Chemical analyzes
were performed using atomic absorption spectroscopy (AAS), Electron Probe Micro
analyzer (EPMA) and Energy-Dispersive X-ray Spectroscopy (EDS) techniques
confirmed a purity of kaolinite due to high alumina content, except a rare slica content
originated from quartz. Kaolinite sorption efficiency was investigated through a series
of laboratory experiments. The optimal reaction conditions were determined to be as:
pH 5 to 9, but the best is 9, and the eqilibrium reaction time is 40 minutes, and the
solid to liquid ration is 1.25 gm to 50 ml. The effect of the initial Cd concentration on
the sorption efficiency of kaolininte was also investigated and shows that the sorption
proportionally increases with high concentration. All the laboratory experiments
indicate that the reaction is an indothermic.
Visual discourse in cinema and television is an expressive medium that carries its audio and visual elements and is effective in influencing the memory of the recipient, according to multiple patterns of forms and representations aimed at persuasion, influence, entertainment, enjoyment and knowledge. This speech will not pass by the recipient without difficulty, as the multiplicity of forms and techniques of image presentation and the diversity of contents derived from different beliefs, concepts, ideas and perceptions may sometimes reach intersections and conflicts, which is reflected in the form of the screen and the theory of television. This motivates us to know the ways in which audio-visual discourse is produced on television, whic
... Show MoreThe primary goal of the study is to practise some systematic strategies for foreign language instruction despite the fact that no single approach to language classroom instruction is inherently superior to others; instead the choice of an approach should be determined by the teacher, students, the subject matter, and the situation. The paper adopts certain strategies which may assist EFL teachers to excel in their work and continue their professional development. Hence, it is intended for language teachers who understand the value of good teaching and like to produce academically successful students. The study could also help college student teachers to acquire new strategies in order not only to succeed but also to excel in their learni
... Show MoreSchemata are the underlying connections that allow new experience and information to be aligned with previous knowledge. When one reads a text he usually uses all his levels of schemata. Schemata enable us to make sense of what is perceived and experienced in the world.
In poetry, readers usually examine carefully and deeply what they are reading in comparison with other sorts of discourse. Coherence is achieved when a reader perceives connections among schemata. It is a connection between linguistic and textual features of the text, and reader's mental expectations as well as stored knowledge of the world. This paper discusses the role of schematic correlation in poetry, and the effect of different schematic background and diffe
... Show MoreBackground: Varicose veins are common in Iraq. Increasing incidence is associated with available jobs of bodyguards, barbers and computer workers.
Objectives: To highlight the frequency, presentation, methods of accurate diagnosis and surgical procedures which are commonly used by Vascular Surgeons in Medical City Teaching Complex, Al-Shaheed Ghazi Al-Hariri Subspecialties hospital and to compare this study with other international studies.
Patients and methods: This is a retrospective study of hundred patients with varicose veins, who were admitted and surgically treated at Al-Shaheed Ghazi Al-Hariri subspecialties hospital during one year period (1st of July 2010
... Show MoreThis study aims to show the markers of the Arabic noun(genitive, nun nation articles,
vocative, definite article and predication). These markers distinguish the noun from other
parts of sentence. It alsoaims at showing why these markers are peculiar to nouns.
Objectives: To document electromyographic changes in thyrotoxic patients, and to categorize the type of myopathic process in thyrotoxicosis.
Design: This case control study was designed to show the electromyographic changes in thyrotoxic patients and to compare these findings with that of normal aged matched controls to
show the significance of these changes in thyrotoxic patients. Student’s test was applied on the results and P value was extracted.
Subjects: Subjects in this study were chosen according to certain criteria depending mainly on their blood level of thyroid hormone (T3, and T4) and TSH. All of them are thyrotoxic patients, their ages range between 15 to 45 years. They were 25 patients (15
Praise be to Allah, Lord of the Worlds, and peace and blessings be upon our Lord and Beloved Muhammad and his family and companions.
The altruistic submission of the other human himself in matters of the world satisfactory to God Almighty with his need and does not come out limit want and destruction. The approach of the Koran in the income creation altruism education for the individual curriculum that includes types of altruism, including Mahmoud and vilified. Ether world life on the hereafter is a vilified type and its consequences are sterile on the existing in the world and in the hereafter a serious consequence, which is special Madiat. On the principle and preference of the doctrine over the doctrine, the Koran has been interest
Free – living or limax amoebae are small free-living protozoans which exist in fresh water and soil environment. These amoebae were found infective to man causing a fatal disease affecting the central nervous system. Fowler and Carter were the first to report four fatal human cases of acute pyogenic meningitis caused by free-living amoebae1. The genera Naegleria and Acanthamoeba are incriminated in such infections2. Swimming in contaminated water has been frequently postulated as the way of infection through the intranasal mucosa. Since
that time more than one hundred cases of primary amoebic meningoencephalitis were reported from different parts of the world. On&
The aim of this article is to introduce a new definition of domination number in graphs called hn-domination number denoted by . This paper presents some properties which show the concepts of connected and independent hn-domination. Furthermore, some bounds of these parameters are determined, specifically, the impact on hn-domination parameter is studied thoroughly in this paper when a graph is modified by deleting or adding a vertex or deleting an edge.