Ionizing Radiation College Essays Samples For Students

Radiologists and the complementary professionals and para-professionals face unique risks while at the work place. Exposure to ionizing radiation induces nuclear changes in cells that may cumulatively lead to cancer. In the case of the patient, the exposure to radiation is necessary in order to establish diagnosis or treatment and the benefits should outweigh the potential harm. For the staff on the other hand exposure to increased levels of exposure is hazardous and undesirable. Shielding is used to avoid accidental exposure to radiation, as well as careful obedience to the laws of physics. The effects of radiation lessen as ...

Cell phone use has effects and impacts in the long run when health and risks are concerned. Studies have shown that there are effects that are associated with the use of cell phones. There is some amount of electromagnetic radiations that are emitted by all cell phones. This is a point of concern with the way in which mobile phones are used with a close proximity to the head while they are being used. The main point of contention is the amount of radiation that can be considered to be safe and that one which can be considered to be harmful ...

Increasing telecommunication networks has resulted in the development of massive towers to support mobile phone antennas. This has been the case in the majority urban and built-up areas where the number of antennas is high. The increasing number of radio broadcasting stations has also contributed to the shift from lower operating frequencies to higher frequencies. Increasing the bandwidth is done to manage increased high traffic in the urban areas. The high frequencies generally require a higher number of towers. As such, the exposure to electromagnetic radiation in v urban cities increases. Mostly, the visual impact of the towers on ...

Ionization radiation effects on cells and Tissues

Overview
Radiation refers to a method by which energy is transmitted through space. Radiation is caused by electromagnetic waves, with the position of the electronic wave in the electronic spectrum determined by its frequency. The high frequency waves are referred to as the ionizing radiation since they have massive energy to dislocate an electron from its position around a nucleus (Medalia, 2011). The radiation effects on human cells goes through extremely complicated stages. When the human body is subjected to ionizing radiation, there will be ionization of large molecules such as proteins. This may in turn alter the molecular ...

Introduction

Physics refers to the branch of science that primarily deals with nature and properties of matter and energy. Its key components are heat, mechanics, light, sound, magnetism, structural orientation of atoms, and electricity. Any technology we use in our daily lives has a relation to physics. Physics is more of the backbone for most daily life activities. Examples include electric light in our homes, cell phones, , computer, CD player plasma TV set, wrist watches, radio, and working of our vehicles.
Physics plays a key role in the production of energy. These various energies are then transformed into electricity for eventual ...

Assignment 2 (Modules 4-6)

Background information:
The diagram below shows the activation of mTORC1 by growth factors as already encountered in workshop 5. The activity of mTORC1 is mainly controlled by the tuberous sclerosis complex, which consists of a heterodimer of tuberin (TSC2) and hamartin (TSC1). The known function of hamartin is to stabilise tuberin. Tuberin has GAP (GTPase activating activity) towards the G-protein Rheb. Rheb is active in its GTP-bound form and activates the mTOR kinase resulting in phosphorylation of S6Kinase (S6K) and consequently ribosomal protein S6, as well as 4EBP-1, resulting in protein synthesis and cell growth. Growth factor signalling results ...

1.List of information that is the same
a. The human epidermal growth factor receptor 2 (HER2) is over expressed in approximately 25%-30% cases of breast cancer.
b. HER2 is a member of a trans-membrane growth factor receptor family with tyrosine kinase activity.
c. Women with breast cancer and over-expressed HER2 have aggressive form of disease with considerable shortened overall survival and disease free survival.
d. Trastuzumab, a recombinant humanized monoclonal antibody reduces growth of HER2. The monoclonal antibodies inhibit growth of HER2, thereby inhibiting tumor growth.
e. Trastuzumab confers longer disease-free and overall survival when used ...