Iraqi Journal of Science and Technology

The purpose of this study is to evaluate the soil fertility of study area in Dhi Qar Governorate / Iraq. The study area located between longitude (46 ° 30 \'00\' and \' 46 ° 52 \'30) and latitude (31 ° 15\' 00 \'and\' 31 ° 30 \'00), respectively. The investigation showed that most of the studied land was affected by salinity and lowest salinity was (5 dS.m-1), while the highest value was (246 dS.m-1). The highest soil pH was (8) and the lowest was (7) The highest value of positive ions was (55) Cmolc Kg-1Soil, while the lowest was (2.4) Cmolc Kg-1 Soil, the highest negative ions was (50) Cmolc Kg-1Soil and the lowest values was (10) Cmolc Kg⁻¹Soil. A mathematical equation was used to devise a mathematical model for preparing a fertile soil map for the investigated area, five fertile varieties are distinguishedas highly fertile, fertile, medium fertile, low fertile and non-fertile.

Recently, business organizations are facing many obstacles and difficulties, such as market openness, challenges of global technological development, and economic instability. Therefore, it is necessary to harness the process of creativity in achieving superior experiences for its customers that enable it to survive and grow in the competitive environment. The impact of process creativity has been studied in its dimensions. Using a new process, improving an existing one) in the customer experience with its dimensions (Employees and Service Delivery Processes), the research community included the Arab Islamic Mashreq Bank, and the research sample included the bank’s employees in their various job positions, and the descriptive exploratory approach was adopted in this research using the questionnaire as a tool for data and information collection. The program (SPSS-ver.26) was used to analyze the data, and the results of the research concluded that there is a correlation and effect between each dimension of the process of creativity with the customer experience.

Unsaturated polyester resin widely separated because of its low cost and its good physical properties. To get higher impact resistance, it has been blended with nitrile rubber (NBR), for the weight ratios (UP 70/ NBR 30) % and (UP 80 / NBR 20) %. The first blend was reinforced with (12 %) of glass powder. Physical properties were carried out on these samples like friction coefficient (F.C) and thermal conductivity. The results showed that the composite material reinforced with glass powder has showed higher thermal conductivity and the polymer blend (UP 70 / NBR 30) % has showed higher friction coefficient. The thermal conductivity results showed that the thermal conductivity values (K) for all samples increased from their levels before immersion of the salt solution with a concentration of (0.3N) and normal water. As for the composite material reinforced with glass powder and the polymeric blend (UP 70 / NBR 30) %, they showed a decrease in (K) values after 28 days of immersion in the normal water.

The present study aims to use a local isolate of Escherichia coli for the production of invertase enzyme and study the effects of some factors that may enhance the production of this enzyme. For this purpose, different nutrient requirements and different culture conditions such as pH, temperature, carbon source, carbon concentration, inoculum volumes and incubation period were used. The results revealed that the optimum pH, temperature, and incubation period were 7.0, 30 ℃ and 72 hours, respectively. The red carrot, as a substrate, was the best carbon source for Escherichia coli at the concentration of 2.5% to get highest enzyme production up to 2.4 U/ml

The aim of the study is to determine changes in several trace elements in erythrocytes such as cobalt, chromium, manganese, molybdenum and phosphorous in a chosen group within the students in Al-Esraa University College and the outcome of the study showed that a physical training everyday (may) motivate some variables in the concentration of some trace elements.

The lab study included evaluation of oil formulation to protect the conidia of Beauveria bassiana from two fungicides; beltanol and basten50 and four insecticides; decis, quality 5, dynamec and supredimethoate after mixing and incubated for 1 and 9 days at relative humidity (RH) 0.0, 6, 33 and 75% and temperatures; 25 and 35 °C. Vitality percentage of conidia in aqueous suspension was negatively affected by recommended doses of the pesticides either the fungicides in which the vitality % of conidia kept at the lowest level (0.0%) over their exposure periods (1 and 9 Days) to the 25 and 35 °C under RH 0.0 and 6%. Not only that, but the insecticides had a negative effect under the same environmental conditions in which conidia recorded a vitality ranged 0.0-34.5%. On the other hand, vitality of the formulated conidia was more degraded under influence of extreme drought conditions (RH 0.0 and 6%) after mixing with a both fungicides over 9 days of exposing to the 35°C and was recorded 70 and 83.3% for 9 days of exposing to the 35 °C under RH 33% in compared with vitality of the fungicide-free formulated conidia. All the formulated conidia whether treated or untreated with chemical pesticides maintained their vitality in completely (100%) at all temperatures under RH 75%. These results have confirmed that it was not benefitted to use the oils only in protecting conidia from adverse physical and chemical environmental conditions, unless appropriate moisture was available, even at a low level (RH 33%).

Escherichia coli O157:H7 colonies have been obtained from eighty produced local Buffalo\'s and Cow\'s soft cheese specimens that have been collected randomly from different retail markets in various districts of Baghdad city. The results showed that the presence of Escherichia coli O157:H7 as a contamination indicator in the soft cheeses. Six isolates were detected on the differential and selective media MacConkey agar, sorbitol such as MacConkey agar, chromogenic media and routine biochemical tests were used to diagnose and identify the bacteria. Results of Escherichia coli O157:H7 diagnosis have been confirmed using PCR technique which exhibited that, 6 culturing strains serotype Escherichia coli O157:H7 were positive using PCR assay and 5 of these strains expressed gene of Stx1 while1strain expressed gene of Stx2.