سعاد عبد المهدي عبد نور الحجيمي

Heterogeneous photocatalysis is an effective wastewater treatment technology for the removal of tissue effluents and some contaminants. Among the effective catalytic treatments, hybrid semiconductor photocatalysts have been widely applied and have received more attention in the past few decades where particles and nanocomposites (ZnO and ZnO/CdS) were prepared by hydrothermal method from raw materials, and its photocatalytic activity was studied using reactive Blue 4 dye under the influence of ultraviolet radiation. The prepared nanocomposites are characterized using various physicochemical techniques including X-ray diffraction (XRD), Field emission scanning electron microscopy (FE-SEM), and Transmission electron microscopes (TEM) analyses. Their photodegradation results revealed that ZnO doped ZnO/CdS nanocomposites show impressive activity towards photodegradation of (Reactive Blue 4) dye. The prepared kinetic diagrams showed a pseudo-first-order interaction. The results of the dissociation efficiency of the dye solution (Reactive Blue 4) dye with the ZnO surface were greater than the surface of ZnO/CdS nanocomposite, and the rate constant was calculated for each of them.

ABSTRACT In this search measurements of the focus of the heavy elements (Cd, Pb, Fe and Cu) in the blood of workers in different areas of the governorate of Najaf have been investigated. blood samples of 10 people aged from (30- 40years) in three regions concerned to study, first, garage area inside the drivers workers, second rural area (Barakea area) and the third cement plant workers Kufa on the windmills ovens and examine the effect of the concentrations of these metals on vital operations within the body of human rights by using the Atomic Absorption Spectrophotometerto determine the concentration of these elements in the blood.

In this research to measure the concentration of elements in the plant chamomile and effectiveness of these items on the biological processes of the human person and the benefits arising from this plant and plant use alternative chemicals used in the pharmaceutical industry Medicine it was measured elements (Fe, Cu, Zn, Pb, Cd) in three different ways depending the process used to reach the best results and to measure the concentration of the elements and compare them with each other. It has also been on the search study the effect of the measured concentrations of the elements on the Rights of the benefits and harms of health has also been studying the benefits of chamomile for humans and how to take advantage of it. And knowledge of the work of each of these elements with the last element association for the purpose of organizing its work within the human body in biological processes and their effectiveness in regulating vital biological processes. The concentration of elements in the chamomile plant was measured in this research and the effectiveness of these elements on human biological processes, the benefits of this plant, the use of plants as an alternative medicine for the chemicals used in the pharmaceutical industry, and elements (Fe, Cu, Zn, Pb, Cd) were measured in three different ways depending on the process used to achieve the best results and measure and compare their concentration Together. The research also examined the impact of the trickiness of measured elements on human health from harmful benefits and benefits, and the benefits of the human chamomile were studied and how it could be used. The working of each of these elements is linked to another element for the purpose of organizing their work within the human body is vital processes and their effectiveness in the organization of biological and biological processes.

Abstract The study examined the nutmeg plant components spectrophotometrically using FT-IR and UV-Visible devices and knowing its components using FT-IR device. The solubility were measured using different solvent (e.g.: benzene, diethyl ether, water, hexane, ether, acetone & chloroform). The study also examined the effect of the nutmeg components on the biological processes of the human body for its various constituents. g.: oils and others. It was also observed that an increase in absorbance of solvents after the addition of the nutmeg to the solvents and according to the following sequence (Di ethyl ether> Hexane > Benzene> Chloroform> Water>Acetone> Ethanol). Key words: Medicinal plants; workers; environments; chemical components.

ABSTRACT : The oxidation of glycine using N-bromosuccinimide (NBrS) has been studied for different pH’s values. With respect to both substrate and oxidant, the reaction presents a consecutive-first order reaction. It is noted that the rate of reaction increases with increasing the manganese ion concentration. Addition of reaction product (succunumide) slightly affects the oxidation reaction rate. The protonated Br+ or NBrS and NBrS are used to be the reactive species of the N-bromosuccinimide. Furthermore, intermediate compounds are noticed through the reaction. Finally, a mechanism for the oxidation reaction is suggested in this work.

نشاط كيميائي ضوئي وخصائص فيزيائية لتحضير محفز جديد Sb2O-Cr2O3 / Al2O3