Iraqi Journal of Science and Technology

Amlodipine is the best prescribed drug for cardiovascular disease in this research a simple and accurate spectrophotometric method has been developed for the estimation of amlodipine besylate drug via oxidation reduction method which based on the reduction of iron (III) by the amlodipine besyltae to iron (II) in acid medium which gives a blue color complex when reacts with the reagent ferricyanide at temperature 35°C having maximum absorption at 774 nm against reagent blank. Beer´s law was obeyed over the concentration range of 5-30 ppm and the Molar absorptivity was 2.02×10-4 (L.mol-1.cm-1) and linear relationship with good correlation coefficients (0.9990). The different experimental parameters affecting the stability of the complex were studied and optimized. Under the optimum reaction conditions. The method was applied successfully to determination of the amlodipine in tablets formulations of 5 mg.

The number of contractors and the area which planted with wheat varieties were used as indicators for performing of those companies and varieties. Questionnaire and face to face interview were used as tools in data collecting, as well as the primary data collected by relying on the records of the concerned companies and a random sample was drawn at 50% of the total number for workers and coordinators in the program, and their total number is about (30) respondents glossy relevant authorities. For data analysis the descriptive statistics was used such as frequencies, percentages, mean. The results of the study showed the superiority of Iba 99 in terms of the number of contractors over its production, as they numbered (649), followed by Sham 6 (493) procedures, while the lowest number of contractors was on Baghdad (7 Procedures). The study also showed that the superiority of the Iba 99 in terms of the total cultivated area, the total of these was reached (34116.3) Hectare, while the data indicated that the lowest area was (22.5) Hectare for Baghdad variety. This study aimed to identify the efficiency performance of seeds production companies seeds production and research centers of high grades wheat and the varieties which are developed in Agricultural Research Directorate / Ministry of Science & Technology and Ministry of Agriculture that are contracting to multiply higher grades of those varieties.

In the present work, lithium titanate prepared from mixing lithium carbonate and titanium dioxide, these compounds were mixed by ball mill and then heat treated at 800 ° C for 180 min. to obtain crystalline granule powder of lithium titanate. The lithium-titanate was characterized by X-ray diffraction (XRD). Graphene nanosheets were added with different weights percentages (0, 2, 4 and 6) %. Scanning electron microscope (SEM) showed the dispersion of graphene plates on the surface of lithium-titanate oxides. The results revealed that the electrical resistance was decrease 98% at the maximum graphene

Hydrodynamic cavitation technique and Ozone were studied separately and combined together to determine synergistic effect of these two technologies for treating wastewater on reducing chemical compounds, in first stage, hydrodynamic cavitation was used with an inlet pressure of 4 bar, while in the second stage Ozone injection with water at 40 mg/l, underwent treatment for a period of time 120 min. Was used in final step, Ozone and hydrodynamic cavitation were jointly applied to decompose chemical compounds. About 56% of COD (Chemical Oxygen Demand) was by compact system, while 26% were reduced by Ozone and only 25% by use hydrodynamic cavitation during 120 min of treatment. Furthermore, in this study, it was found that degradability of common system increased of systems work, it was also found that TOC removal 54% in combined system, 24% using Ozone, and 28.6% in case of using hydrodynamic cavitation, during a treatment period of 120 min. also effect was clear when removal oil. In combined system percentage of removal was 56%, and in case of ozone, it was 26%, and for hydrodynamic cavitation, percentage of removal was 36%.

A field experiment was conducted at Soil and Water Resources Center Research Station, Ministry of Science and Technology for Autumn Season (2018) for the zea mays crop, Rabih cultivar. A completely randomized block design with three replications was used. The experiment included three irrigation treatments: the complete irrigation treatment without reduction of the added water (Control), the irrigation treatment when 30% reduction of the amount of water added to the control treatment and the irrigation treatment when 50% reduction of the amount of water added to the control treatment during the stages of plant growth. The results showed that 30% reduction of the added irrigation water compared to the complete irrigation reduced the amount of added water, and the reduction percentage was as follows: 14.16%, 20%, 17.7% and 15.84% for the different growth stages respectively. The percentage of 50% reduction of the added irrigation water compared with control treatment showed that reduction of the amount of added water as follows: 26.45%, 32.92%, 30.77% and 27.7% for the four growth stages, respectively. It is also led to a decrease in grain yield when reducing 30% and 50% of the added water, compared with the full irrigation treatment.

The rains are heavy in year 2019 which led to open the dams for both Turkey and Iran. This high level of water caused flooding in Iraq's border villages. For the purpose of finding solutions to reduce the impact of the floods, there should have been control of the movement and flow of water, indeed there was surveillance by satellite images for example a “satellite sentinel 2”. But these images may not cover the entire study area or the images are for extended periods of time. Therefore, in this research, we integrated spatial images through development flowchart using the model method with program ArcGIS, through this work a clear video was obtained for the flow of water for different periods, possibility to find appropriate solutions to address flood situations by the authorities. The paper information derived proved to be essential and valuable for flood management plan and rehabilitation.

Monitoring changes in land use/land cover are considered crucial issues in environmental sustainability strategies processes. In this study, the supervised technique was followed to classify the land cover of Baghdad city as a study area of this paper, and to demonstrate both the benefits and viability of employing optical satellite data to estimate and monitor the various land cover categories. The purpose of this research is to determine the trends in land use and land cover change in the Baghdad metropolitan region. As a comparison between two important dates that are before and after the year 2003. Land cover types were classified into 7 categories through supervised classification using two types of satellite imagery. The first one is Landsat 7 for the date 2002, and Sentinal-2 for the date 2019. This study reveals that a big increase in the urban category, with a decrease in the total green land category. The other indicator obtained by this study is the great expansion that occurred in the urban category at the expense of agricultural lands and the groves category. This expansion has resulted in the unplanned growth of settlements and the difficulties that go with it. These are the primary negative consequences of this region\'s increasing urbanization.