Colour Essay Example | Topics and Well Written Essays - 500 words

Colour - Essay Example This research investigates the complex meaning of the color red, considering the ways its meaning can vary amongst individuals, cultures, and subcultures. In examining the colour red, one of the most overarching considerations is establishing an epistemological framework between cultures. Friedman & Miyake (2004) investigated the extent language shapes human perception. This study primarily revealed that cultures with more complex vocabularies for designating colour subsequently perceived colour in different ways. In terms of red, this is significant as it is difficult to speak of a singular ‘red’ throughout world culture, but rather a series of approximating notions of ‘redness’ that are at best pragmatically linked. This notion of redness has assumed symbolic recognition in global society. One of the most prominent such instances is the notion of red as embodying revolutionary ideas, or more specifically socialism and communism. Earl (1996) examined this thematic implementation of red in a variety of 20th century social contexts. Undoubtedly influenced by the Red Star communist symbol, as well as the Russian semantic linkage between red and ‘beautiful’, red came to acquire such prominent symbolic properties that countries with communist regimes were even referred to as ‘red’ countries. This symbolism extended to specific social movements; for instance, the perceived intrusion of communism into the United Kingdom and United States was referred to as the Red Scare. While there is the distinct possibility that these political notions of redness were influenced by deeper human instinctual perceptions of red, the symbolic perception of red also varies across cultures. In this way, rather than ‘red’ purely embodying revolutionary ideology, the color also connotes passion and virility. For instance, from a comprehensive qualitative approach, red roses, hearts, or even candy harkens these essential qualities. Ball (2001, p. 43)

Pregnancy as it pertains to MRI Essay Example | Topics and Well Written Essays - 2000 words

Pregnancy as it pertains to MRI - Essay Example These particles produce signals due to Radio waves that are collected by a receiver within the scanner. These signals are characterized with the use of varying magnetic field and are further processed by a computer in order to create ultra sharp images of tissues in the form of "slices" that can be viewed in any plane and from any direction. The key advantage of MRI is that it causes no pain and the responsible magnetic fields cause no damage of any kind to human tissues. The MR scanner used may generate considerably loud tapping or knocking noises during the process but it can be prevented using earplugs. A patient can easily communicate with the technologist or radiologist at any instant with the use of an intercom. The magnetic field generated in the MR system is quite powerful and will attract Ferro-magnetic objects and can cause them to move suddenly and with a considerable force. Thus, there can be a risk to the person in the flight path of the object. Due to this reason, great care is taken and ferromagnetic objects like screwdrivers and oxygen tanks are not allowed into the MR system area. A patient is asked to remove all kind of metallic belongings like watches and jewelry before going for an MRI. The magnetic field of the MR system is of considerable magnitude and can pull on any iron-containing object in the body like medication pumps or aneurysm clips. Every MRI facility has a strict protocol that ensures that the MRI technologist and radiologist know about the presence of all metallic implants and materials so that special precautions can be taken. Sometimes, even the exam may have to be canceled. In case a bullet or other metallic fragments are present in the body, there is a risk that it could change position leading to an injury. A metallic implant can not only distort the MR images but also make it difficult for the MRI system to tune to your body. It is not possible to avoid it but allowance can be made while interpreting the images only if the radiologist is aware of their presence. Some MRI examines a gadolinium that may be injected into a vein in order to help the interpretation. a gadolinium is a contrast agent that does not contain iodine like those materials which are commonly used in x-ray process and hence rarely causes any problem or allergic reaction. Preparation for MRI The patient is asked to wear a special gown during the MRI study. The person (generally a friend or relative) accompanying you will be asked questions regarding the presence of implants and will be instructed to remove all metal objects from pockets and hair even before entering the room. A screening form is filled to ensure that the patient may safely enter