Spitalfields Coursework Example | Topics and Well Written Essays - 1000 words

Spitalfields - Coursework Example The place lured many immigrants from various regions; these immigrants have contributed tremendously towards the richness of life in Spitalfields. The French Protestant (Huguenots) refugees brought with them the skills of silk weaving in 1685. In 19730’s Irish weavers came in to participate in the silk trade. The 18th century or the Victorian era saw a steady decline in the trade and commerce in Spitalfields, with the merchants’ haven degenerating into slums. It became known more a center for criminal establishments rather than a well to do industrial town. Famous tales of Jack the Ripper and the Whitechapel murders still fascinate people across the world. More recently as in the late 20th century, saw a steady influx of Bangladeshi immigrants who worked in the local textile industries. They are better known for their culinary skills and hence, most of them today own restaurants in and around Brick Lane. Spitalfields is a unique combination of the modern and the ancient. It still has the quaint ancient flavor while it has welcomed the modern architecture. It developed extensively after the Great London Fire in 1682. The City of London acquired direct control of the markets in 1920, and extended the original market buildings after eight years. For the last 74 years, the Old Spitalfields Market has re-established itself as a thriving market As it happens with modernization, Spitalfields too saw the intrusion of high finance into its old market place. That reminds us of the fact that London has always been very patient and encouraged diverse cultures and East End has been a milestone for its rich and diverse culture. Since its inception, Spitalfields has witnessed many changes in terms of people, history, and culture. Now, the onus is on the people there to preserve and enhance Spitalfield’s historic heritage and architectural beauty. It is only then that one can appreciate the past, enjoy it in the present and carry the rich culture over to the

Explain the basic principles of MR image production Essay - 2

Explain the basic principles of MR image production - Essay Example MRI is the safest imaging clinical imaging technique that is used for a variety of medical purposes like differentiating between normal and pathological tissues for diagnosis and tracking dynamic changes in tissue properties over time. Magnetism is physical phenomenon in which materials and moving charged particles can attract or repel other materials or moving charged particles (Ballinger, Intro to MRI, 1998). Magnetism results from moving electric charges or intrinsic spin moments of electrons or nucleis. Spin is a quantum mechanical property. This means that the available spin energy levels are constrained to specific, discrete values. A spin 1/2 particle has only two possible spin states: spin up (+ 1/2) or spin down (- 1/2). The magnetic moment is aligned with the spin. The spin-up and spin-down states are described as being equal in energy, or degenerate. However, if another magnetic field is introduced, the spin-up and spin-down states will be no longer equal in energy. The energy difference introduced by applying the external magnetic field is known as the Zeeman splitting (van Geuns, 1999). This effect is very important in such applications as magnetic resonance imaging. Magnetism can be classified as par amagnetism, diamagnetism, ferromagnetism, and antiferromagnetism (Ballinger, Intro to MRI, 1998). Having microscopic magnetization, protons within a magnetic field produce wobbling as they spin. The rate of this wobbling or precession constitutes resonance or Larmor frequency (Intro to MRI). The application of a radio frequency pulse at the Larmor frequency causes a change in the distribution of spins with respect to their energy state and precessional phase coherence (Rodr ´Ã„ ±guez, 2003). Practically, it means that If individual nuclei is exposed to RF radiation at the Larmor frequency, nuclei in the lower energy state jumps to the higher energy state (Intro to MRI). Upon