Radionuclide

Magnetic resonance imaging (MRI) is a powerful medical imaging modality which gives high spatial resolution images without radiation risk. MRI acquires signals from hydrogen protons of subject. Under external static magnetic field (B0), the spins of hydrogen protons precess with a Larmor frequency, while they align parallel to the direction of B0. The spins align antiparallel to the direction of B0 when additional radio-frequency (RF) pulse with the Larmer requency is ap-plied. After RF pulse is

and steam explosion that ruptured the reactor cap and fuel channels to implode, releasing radioactive material and gases to the atmosphere (Frot, N.d.) The fire and explosion from ChNPP, resulted in the release of large quantities of volatile radionuclides (Iodine131, Caesium134, Caesium137, and Strontium90), noble gases (Xenon and Krypton), and fragmented fuel and debris up to the atmosphere (United Nations Scientific Committee on the Effects of Atomic Radiation 2012). Consequently, the negative

According to the Health Physics Society radiations have a positive effect on plant growth at lower radiation levels and harmful effects at high levels. Plants need some types of non-ionizing radiation like sun-light for photosynthesis. Though these solar radiations are vital for the survival of plants but some other forms of non-ionizing and ionizing radiations are deleterious for plants. Ultraviolet radiation affects plant growth and sprouting and the amount of damage is proportional to the radiation

INTRODUCTION Radioactive waste contains radioactive substances, which are used for the production of nuclear power and in other scientific fields such as nuclear fission or nuclear technology (Hidaka, Yuan, and ebrary, 2012). Currently, although the use of radioactive materials has provided great benefits to society, the radioactive waste issue has been widely discussed in terms of being a huge problem that may affect natural environmental systems, and also human health (Ojovan & Knovel, 2011).

The presence of radionuclides and heavy metals in our surroundings has become the most serious environmental concern. These contaminants or pollutants fail to degrade on their own over time and must be removed or neutralized. Microorganisms act as natural catalysts in the process of transformation of toxic metals into non-toxic ones. This is why there is an increased interest in the understanding of microbiological processes which help in remediation of these toxic wastes from the environment (Francis

Figure of Merit (FOM) is a mathematical expression that accounts for detection efficiency and background noise, and is used to optimize system performance. The desire of this study is to maximize the detection system’s efficiency and minimize its background signal. The highest optimization potential occurs at FOM’s peak value. Finding the optimum counting region of interest is an iterative process and an important first step in the characterization of a detection system. A standard solution/sample’s

Microorganisms are present almost everywhere in the world both in living and non-living systems. Whenever the microorganisms are present close to some toxins or contaminants, they help in their removal or sequestration in one way or the other and thereby clean up the environment. These special classes of microorganisms are considered very important for the environment as they considered as “Natural Cleansers” of the ecosystem. Microbial bioremediation can be seen happening almost anywhere such as

Jaslyn Bonilla November 17, 2017 EFL Nancy Forrest Water Pollution Caused by Fracking Can you imagine being able to light your tap water on fire? Water is a critical source used in all areas to support our ways of life. The use of water ranges from basic household need to creating energy. Water is essential for all living things to survive, yet we have companies polluting it. Fracking is causing water pollution for underground and groundwater, both surface water and aquifer

Física da Radiação, 1º semestre, IST, 2010/2011 1 Radiopharmacology Radiopharmacology Diogo Ferreira, diogo.cunha.ferreira123@gmail.com MSc student in Biomedical Engineering, Instituto Superior Técnico, student no58548 Abstract Nuclear Medicine is the branch of medicine concerned with the use of radio-nuclides in the study and the diagnosis of diseases, eg. the assessment of organ function, detection and treatment of some diseases or monitoring of treatment’s effects. It provides physiological

rare but dangerous condition that can lead to significant morbidity and mortality for the patient. Multiple nuclear medicine imaging techniques can be used for the diagnosis of CSF rhinorrhea including Computed Tomographic (CT) Myelography and Radionuclide Cisternography.