X-ray photoelectron spectroscopy

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  • Kanamycin Sulphate And Rifampicin Essay

    of 5 kV. The powder samples (3-5 mg) were placed on a double sided carbon sticky tape which were mounted on a sterilized metal stubs and were coated with a gold/palladium alloy (10 nm thick) using a high resolution sputter coater (EM Technologies Ltd., Kent, England). The SEM images were observed and captured at different magnification levels. Crystallinity by X-ray powder diffraction (XRPD) The crystallinity of the supplied and spray-dried powder samples was determined using an X-ray powder diffractometer (PANalytical X’Pert PRO MPD PW3040/60 XRD, Netherlands) equipped with a rapid real time multi-strip X’Celerator detector Cu Kα radiation (40 kV voltage and 40 mA current) source. The powder sample was loaded in an aluminium sample holder and scanned over a range of 5-35° (2θ) at ambient conditions. PANalytical High Score software was used to analyse the collected results. Surface composition by X-ray photoelectron spectroscopy (XPS) The XPS analysis of the spray-dried powders was performed using a Kratos Axis Ultra Spectrophotometer (Kratos Analytical, Manchester, UK) equipped with a monochromatized aluminium X-ray source at a power of 140 W (10 mA and 14 KV). A small quantity of each powder sample was filled into shallow wells of sample holders and the spectra were collected using an analysis area of 700 × 300 μm at a sampling depth of 5-10 nm. Charging of the samples during irradiation was compensated by an electron flood gun in combination with a magnetic immersion…

    Words: 2078 - Pages: 9
  • Pros And Cons Of Biomedical Engineering

    I. Introduction Thesis: Biomedical Engineering has enhanced medical equipment, biomechanics, and tissue engineering. II. Medical equipment. a. Medical imaging i. X-rays ii. Ultrasound iii. Robot that helps children III. Biomechanics a. Anthropometry i. Human movement ii. Treating injury IV. Tissue engineering and Genetic Engineering a- Tissue Engineering i- The relationship between Tissue engineering and biomaterials ii- Human tissue engineering b- Genetic Engineering V. Conclusion…

    Words: 1827 - Pages: 8
  • Magnetic Resonance Imaging

    as an MRI scan, is a type of scan that uses magnetic fields and radio wave energy to create images of the organs and tissues, such as the brain. It is a scan that is used to detect things such as tumors, infections and injuries. It is often used after an x-ray or CT scan is done to gather more information. This paper will discuss MRI in depth such as how an MRI works, its use in society, the differences between MRI and other scans and the future for MRI. …

    Words: 1544 - Pages: 6
  • What Is Magnetic Resonance Imaging?

    the invention of MRIs has changed the Medical industry as medical technicians are able to produce a three-dimensional image that is non-invasive. Medical technicians put MRIs to use when trying to detect internal problems including cancers, diseases, and injures within a human body (Disher, Lenarduzzi, Lewis, & Teeuwen, 2006). Not only do medical technicians use MRIs on their patients but veterinarians also make use of MRIs on various animals to diagnose similar problems. In comparison to…

    Words: 1056 - Pages: 5
  • Radiation Protection Research Paper

    X-rays were discovered in 1895 by Wilhelm Conrad Roentgen, a Professor at Wuerzburg University in Germany. While working with a cathode-ray tube in his laboratory, Roentgen observed a fluorescent glow of crystals on a table near his tube. In the past, people were unaware of how harmful x-rays are, because they are invisible. Scientists and researchers working in the radiography field were not aware of the effect on the body after continuous exposure. When radiography was in its infancy, it was…

    Words: 702 - Pages: 3
  • Essay On Electromagnetic Waves

    and x-rays is a type of electromagnetic wave. The shorter the wavelength of a wave, the more energy the wave emits. Gamma radiation has the shortest wavelength amongst all the other electromagnetic waves and has the most energy. It cannot be seen or felt and can pass through almost anything. X-rays have slightly longer wavelengths than Gamma rays and has the second most energy emission. Like Gamma, x-rays cannot be seen but unlike Gamma radiation, x-rays cannot pass through dense objects like…

    Words: 644 - Pages: 3
  • Client Care Clinic Reflection

    started off by Maria teaching us about how to check the rad machines and if they are are working correctly. She used a step wedge that showed different densities and if it matched a previously taken rad it was good for use with clients. She also showed us which barriers to use with the sensors and how to set up the rooms. We were then able to do it for all the rooms so it would be ready for students who needed to take rads. Working in rad had its advantages since we will be taking many rads with…

    Words: 1160 - Pages: 5
  • Imaging Department Workflow

    workflow. It took several minutes if not hours to complete a radiograph using this process of the film screen. The technologist then had to digitize these images for image acquisition into PACS; this delayed the workflow process even more. In CR imaging, the x-ray photons are stored on an imaging plate. A CR reader processes and scans the image with a red laser beam extracting the latent image from the phosphors. A linear photodiode processor detects these light photons and digitizes the image.…

    Words: 1811 - Pages: 8
  • Essay On Mammograms

    Mammograms According to the national cancer institute, a mammogram is an x-ray vision of the human breast. The x-ray vision is used for screening purposes in facilitating the detection of tumors in the breast as well as microcalcifications such as calcium deposits that are critical in the detection of breast cancer. Mammograms used for diagnostic purposes in cases where the patient exhibits symptoms of cancer, and a tumor already detected in the breast. The diagnostic mammogram requires more…

    Words: 1151 - Pages: 5
  • The Importance Of Space Technology

    energy that the sun’s core presents, and the atoms in each consecutive level of our star as the light attempts to outflow. “together these efforts channeled the combined expertise of dozens of astronomers, computational physicists, and atomic physicists into diving with unprecedented precision how atoms in the layers of the sun and other stars interact with the light trying to escape” (James). In 2003, Yu had taken his career to join forces with prestige medical physicists; however, he sustained…

    Words: 730 - Pages: 3
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