Using an environmentally friendly and inexpensive method, AuNPs gold nanoparticles (AuNPs) were prepared using pulsed laser ablation technique (PLAL) 600,700mJ different ablation energies of a gold target immersed distilled water (DW). The size and shape of the nanoparticles were verified by examining the morphological characteristics, as they showed the value of diameters between 30-75 nanometers with almost regular spherical shapes. Solution casting technique was used to prepare CMC/PEG composite polymeric films prepared in equal weight ratios 50:50% supported with different ratios of 5,10,15 ml of AuNPs. UV-vis spectroscopy was used to calculate some optical constants such as absorbance, absorption coefficient, energy gap, and properties as thermal conductivity coefficient k for polymeric films CMC/PEG-NPs. The results showed an increase in the thermal conductivity coefficient with an increase in AuNPs, and optical examinations showed a decrease in the value of the energy gap. With the increase in the nanomaterial concentration due to the presence of voids between the polymer chains or the lack of electron transfer contribution with the accumulation of AuNPs. We notice a decrease in the energy gap by increasing the concentration of nanoparticles until it reached a value of 3.21eV at 700mJ
Klebsiella pneumoniae is a pathogen relevant to hospital acquired and community acquired such as urinary tract infections, pneumonia, and wound and burn. It has high levels of antibiotic resistance and capability to produce biofilm. This study included comparing among six antibiotic resistance patterns for the hospital and community acquired infections, and detected biofilm gene (mrkA). Clinical samples were collected from Teach Bagubah Hospital, Al-Batool Maternity and Children Teaching Hospital, and private laboratories in Baqubah/Diyala, Iraq. To investigate antibiotics susceptibility, the Kirby-Bauer disk diffusion method was used to compare between community acquired isolates and hospital acquired isolates. Hospital acquired of K. pneumoniae were less susceptible than community acquired of K. pneumoniae isolates. Both isolates community acquired and hospital acquired were high rates of resistance for β-lactam/β -lactamase (Amoxicillin-clavulanate and Ticarcillin- clavulante). Screening and confirmation based on ESBL chromogenic agar are more sensitive than ESBL producers of the double disk synergy test, which were 30% and 60% produce- ESBLs in nosocomial acquired, and 20% and 40% in community acquired, respectively. The results of gel electrophoresis for PCR product using specific primers for mrkA gene prevalence were 83.33% and 66.6% in nosocomial and community acquired infection, respectively. The results are demonstrated more in the rest of the paper.
Skin cancer is a very serious disease and identifying it early is therefore very important to take the appropriate treatment before the situation worsens. Melanoma cancer is one of the most prevalent malignant types in recent years because it spreads to the rest of the body quickly, it must be detected early and treated. Computer Vision in medical imaging analysis is important in the diagnosis of various diseases at many stages. These methods give a high-resolution assessment of the disease by analyzing the images digitally. The steps followed in this paper involve collecting an image dataset from a global website for skin cancer about 1500 photos of different sizes, preprocessing, segmentation using threshold, feature extraction for Asymmetry, Border, Color, Diameter, (ABCD), etc., calculating the total of dermatoscopy score and then classification using Artificial Neural Network (ANN) and Support Vector Machine (SVM) in the same of the stage. The results of the system display that the attained classification accuracy is 98.38%.
The growth and characterization of iron oxide thin films by spray pyrolysis method using iron chloride hexahydrate. Iron oxide films deposited on well cleaned glass substrate at different substrate temperatures varying from 2500C to 5000C in air atmosphere. The characterization of iron oxides films was investigated for their optical and morphological properties by using spectroscopy and Scanning Electron Microscopy. The atomic absorption spectroscopy showed the existence of direct band gap energy nearly 2.18 eV with varying substrate temperature. Optical, structural and morphological observations were showed the film quality was getting better at 350 0C substrate temperature, also grain sizes were cleared.
Pure and doped magnesium oxide (MgO) thin films were prepared with different volumetric ratios (0, 2, 4, 6, and 8%) of zinc sulfide (ZnS) on glass substrates at (350 °C) by chemical spray pyrolysis technique. The surface topography, absorption spectrum, absorption coefficient and Urbach energy of the prepared films were studied. The atomic force microscopy (AFM) results revealed that the surface topography of the prepared films changes as the percentage of doping with zinc sulfide (ZnS) increases. The absorbance spectrometry of the prepared films was measured by UV-vis. The Urbach energy of the prepared thin films increased by increasing the doping ratios with (ZnS).
