Univesity of Thi-Qar Journal

The aim of present study was to investigated some virulence factors of Acinetobacter baumannii as well as study their tolerance to some environmental factors. It was identified 20 isolates of A.baumannii. burn patients in Al-Hussien Teaching Hospital and other burn care units in Al-Nasiriyah city . The specimens were collected during period from August 2018 to February 2019. It were taken by swabs from pus of the burned area and then inoculated on blood agar and MacConkey agar. The isolates were diagnosed by microscopic examination, biochemical tests , API 20 E and Vitek- 2 system . some virulence factors of bacteria detected such as capsule , biofilm formation , colony factor antigens and gelatin liquification , the results revealed that100%, 85% ,75% and 65% of isolates were positive to capsule, biofilm formation , colony factor antigens producing and gelatin liquification respectively .The effect of some environmental factors on bacterial growth are studied .It is found that the optimal range of pH for bacterial growth is 6-10 ,and the optimal growth of bacteria in a concentration 5% of NaCl , as well as , it shows that all bacterial isolates have the ability to grow in 44 °C. Due to the spread of these bacteria in our hospitale ,especially in the burns unite , this study was doen o detecated its properties and virulence factors .

Otitis Media considered as one of the most common types of ear infections, as well as the most blamed etiology is bacterial. Pseudomonas aeruginosa is the most diagnosed pathogens causing these infections. P. aeruginosa has virulence factors that lead to damage to the mucosa of the middle ear. A total of two hundred and ten (210) samples collected from Otitis media patients whom consulting the Ear, Nose, and Throat (ENT) section in AL-Habbobi Teaching Hospital in Al-Nasiriyah City, Southern-Iraq. During the period from August 2018 to January 2019. P. aeruginosa accounted for 65 samples (30.95%). Almost of isolates were sensitive to Carbapenem. The present study concludes females constitute a high percentage of infection with Otitis media (P-value= 0.01) and younger ages are more exposed to the risk of Otitis media (P-value = 0.36). The present study aimed to detect the relationship between the prevalence of Otitis media and the parameters associated with patients like gender, age, housing, and the study period. Also studying the pattern of antibiotics Sensitivity for the targeted bacteria and detection of some virulence factors.

The research included the study of environmental pollution in the Euphrates River in the vicinity of the power plant in Thi Qar city and its impact on the quality and environment of the river water. The study showed the high values of most physical and chemical properties in the river water, which confirms the effect of the electric station. The samples were taken during the months of February and April of 2019. Six stations were chosen along the river in the study area, two stations before the electric station and two stations next to the station and two stations after the electrical station. The samples were taken from the edge of the river and from the middle and at a depth of (30) cm. The laboratory tests were conducted to calculate the electrical conductivity ,PH and the calcium and magnesium ion rates. The study of properties showed that all levels except PH are not in accordance with the Iraqi and global determinants of potable water as shown in Table (2). We also noticed that these rates were higher in February than in April due to the rain that swept the country and consequently the rise in the water level of the river, which led to a decrease in the percentage of pollutants.

Urinary tract infections (UTIs) are one of the commonest infections encountered by clinicians despite the widespread availability of antimicrobial agents. Such Infections caused by different bacterial pathogens that can be acquired through both hospitals and the community. The present study is aimed to isolation and diagnosis of Staph. aureus , detecting the optimal antimicrobial for the treatment of these infections. A total of (600) mid-stream urine samples were collected during the period from August to December, 2018 from patients who were complained from UTIs at AL-Hussain Teaching Hospital in AL-Nasiriyah City, Southern Iraq. The study included isolation and diagnosis of Staph. aureus based on morphological, microscopic characterization, biochemical tests and confirmed by API-20 and Vitek2 systems. In addition , all Staph. aureus isolates were subjected to the serological diagnosis of protein A by using a latex agglutination test and convention PCR technique was used to detect the presence of the 16S rRNA gene (353bp). 380 (63.33%) were positive isolates for bacteriological examination, the Staph. aureus was identified with 50 samples (13.5 %). In addition, all Staph. aureus isolates were assayed for antimicrobial susceptibility against 14 selected antibiotic discs by using the disc diffusion method. All isolates were completely resistant to Penicillin (P), Oxacillin (Ox), and Ampicillin (Amp). While the most effective antibiotics were Nitrofurantoin, Gentamycin, isolates were susceptible to these antibiotics in 76%, and 60%, respectively. Also, In the analysis of the nucleotides sequence of the partial 16S rRNA gene, the results were showed that these bacteria actually related to Staph. aureus ,according to current result, three of these isolates registered globally in the NCBI Gen bank, and the accession numbers of these isolates are (MK910079.1),( MK910080.1), and (MK910081.1).

Molecular structure geometry have been investigated for Coronene and Coronene-Al, B, C, Ga, In and Coronene-O by using Gaussian software at basis set 3-21G, B3LYP level, density functional theory (DFT). Adding the atoms Al, B, C, Ga, In or Oxygen to Coronene change electrons density distribution. Study of the magnetic characterstics shows that some systems like Coronene-Carbon and Coronene-oxygen has the antiferromagnetic charactersti, this type of magnetic properties stands for open shel system which has two type of orbital α and β orbitals. Individual atoms calculations was achieved in order to make a comparison between Coronene and the atoms to demonstrate which of them will behave as a donor or an acceptor. EHOMO, ESOMO, ELUMO, total energy electronegativity and electrophilicity were evaluated for all paradigms under the study. Using DFT to study the symmetry shows that there are two types of point group symmetries C6h/C1 and Cs/C1. Coronene-Corbon posseses the highest dipole moment value among the samples, it has the value (5.5873 Debye), dipole moment credit is very important to give sight about the internal structure of substances. Calculations of chemical potential shows clearly Al, Ga and In behave as donors, while B, C and O behave as acceptors. Also binding energy study exhibits that Coronene is going to physisorbe on the surface of the atoms B, C and O.

The present study was conducted to measure concentrations of six trace elements (Cu ,Pb ,Zn ,Cr ,Ni and Cd ) in water and plants (Apium graveolens , Lepidium sativum and Raphanus sativus). The samples were collected during winter 2016 from different places of Thi-Qar province. Levels of trace elements were determined by aflame atomic absorption spectroscopy (FAAS). The means concentrations of Cu ,Pb ,Zn ,Cr ,Ni and Cd in the water were 1.687, 3.052, 1.634, 4.082, 0.341 and 0.879 ppm respectively. In plants, their means concentrations in the A. graveolens plant were 3.288 , 1.930 , 2.850, 3.440 , 0.375 and 0.715 ppm dry weight respectively, in the L. sativum plant were (4.745 , 1.724 , 3.213 , 2.789 , 0.375, 0.750) ppm dry weight respectively, and in the R. sativus plant were 4.677, 1.559, 2.348 , 2 .483, 0.373 and 0.679 ppm dry weight respectively.It was found that most concentrations of trace elements in the water samples were exceeded the allowed limits for irrigation. Moreover, in A. graveolens, L. sativum and R. sativus plants, elements Pb,Cr and Cd exceeded the allowed limits by Food and Agricultur organization (FAO) and World Health Organization (WHO).

Two phase flow boiling heat transfer and pressure drop in the vertical evaporator tube section of refrigeration system have been experimentally investigated using refrigerant R134a as a working fluid. The objective of the present work is to investigate experimentally the effect of heat flux, mass flux, vapor quality and saturation temperature on refrigerant flow boiling heat transfer characteristics in the evaporator of refrigeration system. These investigated parameters have significant impacts to enhance the thermal performance of the evaporator. The experimental investigations were conducted in smooth copper tube with inner diameter 5.8 mm and 600 mm length under different test conditions. The test conditions considered in this study were, for heat flux of 7.718-32.78 kW/m2, mass flux of 97.3-148.7 kg/m2.s , saturation temperature of -20.58 to -15.68 ˚C and vapor quality of 0.3-1. It can be concluded from the results that, the average heat transfer coefficient at relatively greater mass flux 148.7 kg/m2.s was higher in range of 21% compared to other mass fluxes at constant test conditions. The relatively higher value of heat transfer coefficient was observed at heat flux 32.78 kW/m2 with average increase of 19% compared to the relatively lower value 23.38 kW/m2. The enhancement in local heat transfer coefficient at saturation temperature -15.68˚C was higher by about 12% than that for the relatively lower temperature -20.58˚C. The effect of increase in mass flux and heat flux on pressure drop in the evaporator tube was about 9% and 7.5% respectively.

This paper concerns with the application of finite element technique to the nonlinear analysis of the behavior of profiled steel sheet ferrocement (PSSF) composite panels. The composite panels were analyzed using nonlinear three dimensional finite element models. The constitutive models of the nonlinear material behavior for ferrocement matrix, PSS, and steel wire mesh were used. ANSYS version 16.1 program code was used to analyze the three dimensional model. Ferrocement was modeled by using the 8-noded isoperimetric brick elements (SOLID65) with three degrees of freedom, while the profiled steel sheet was modeled as SHELL181 element with four-node element with six degrees of freedom at each node: translations in the x, y, and z directions, and rotations about the x, y, and z-axes. A nonlinear spring element, COMBIN14, was used to represent the mechanical connectors, while to simulate the adhesive epoxy layer solid element SOLID185 was used. It was defined by eight nodes having three degrees of freedom at each node: translations in the nodal x, y, and z directions. The wire mesh reinforcement was modeled as a volume ratio distributed within the ferrocement brick elements. The analytical results of load-deflection response have been compared with available experimental works.

This paper presents a privacy protection solution for online photo share by obscuring faces in images, which keeps persons anonymous. The proposed system contains two modules. The first is the face detection module to identify region of interest (ROI) which is faces. The second is a face encryption module, which encrypts the ROI pixels using keys so that the access to the faces is restricted. The face detection module uses skin color detector in YCbCr color space to detect skin areas in the image. Also, to overcome the illumination problems in color images, two color constancy methods were adopted for color correction and lighting of the input images. The edges of the image are utilized to separate the faces segments from the background or object that have similar skin color. Morphological operations such as erosion are applied to remove small areas and hole filling to remove any holes in the binary segments. In addition, the correct faces are located by using a set of features. The face encryption module uses two chaotic logistic maps. One map is used for shuffling the face area pixels and another map is used for encrypting the pixels. Both shuffling and encryption are done using a keys. The face detection was tested on Caltech face database and showed a high detection rate and can localize face under different illumination conditions. The experiments on face encryption showed satisfactory results in various tests in terms of key space, PSNR, MSE and entropy analysis.

Nowadays, the protection of secret data, which is being sent during transmission channel, has become one of the most important challenges in the information security. Therefore, the using of multimedia technology to provide data protection is needed. Hence, one of the most common data security methods used is image steganography. This paper applied “Modified Smallest Univalue Segment Assimilating Nucleus” (MSUSAN) algorithm to detect the interest points, which it are used to steganography, so that the embedding process in the area containing the edges or corners is less susceptible to discovery because the human eye is not sensitive to the change of edges. So when the nucleus is a candidate corner, the block detected as a rough block. Whereas the nucleus isn’t a candidate corner, the block detected as smooth block. The least significant bit (“LSB”) technique is used to hide 3 bits in the rough block while 2 bits are hidden in the smooth block. Therefore, this method is of high efficiency in terms of payload rate, “Peak Signal Noise Ratio”(PSNR) and “Mean Square Error”( MSE) which gives average PSNR of 54.25 and average MSE of 0.25 when hiding secret.image of_size “128*128” (131,072 bits) in different cover image of size 512*512.In spite of hiding the largest number of secret bits up to 546506 bits, which is approximately secret image of size 261 * 261 , the PSNR is still above 46 and the MSE is still less than 1.4 . This shows that the quality of the proposed technique in this paper is very good

The research included one of the injuries that most athletes fusser from while practicing various games which is the injury of Supraspinatus muscle animation of the shoulder joint. The study aimed to prepare training exercises for this type of injury according to the functional and physical aspects of the injured athletes, as well as evaluating these exercises according to different stages of applying. The researchers used the experimental approach and design an experimental group of different stages that is suitable for the problem. The population of the study included the players of shoulder joint injury coursed by musculoskeletal inflammation, premier league participant and participants of the qualifying for the premier league of 2017-2018, in Thi-Qar city. The total of the research community is 12 players. However, the researchers concluded that the praxis of various exercises has a positive effect on the inflammation of supraspinatus muscle animation. Thus, the evaluation of training exercises during different stages showed the amount of improvement through the successful application of these exercises, which
reflected on the work of the muscle physically and functionally.