Radiosurgery

Radiosurgery is surgery using radiation, that is, the destruction of precisely selected areas of tissue using ionizing radiation rather than excision with a blade. Like other forms of radiation therapy, it is usually used to treat cancer. Radiosurgery was originally defined by the Swedish neurosurgeon Lars Leksell as “a single high dose fraction of radiation, stereotactically directed to an intracranial region of interest”. In stereotactic radiosurgery (SRS), the word stereotactic refers to a three-dimensional coordinate system that enables accurate correlation of a virtual target seen in the patient's diagnostic images with the actual target position in the patient

Technological improvements in medical imaging and computing have led to increased clinical adoption of stereotactic radiosurgery and have broadened its scope in recent years. Notwithstanding these improvements, the localization accuracy and precision that are implicit in the word “stereotactic” remain of utmost importance for radiosurgical interventions today. Stereotactic accuracy and precision are significantly increased by using a device known as the N-localizer that was invented by the American physician and computer scientist Russell Brown and that has achieved widespread clinical use in several stereotactic surgical and radiosurgical systems.

New Found Glory

New Found Glory (formerly A New Found Glory) is an American pop punk band from Coral Springs, Florida, formed in 1997. The band currently consists of Jordan Pundik (lead vocals), Chad Gilbert (lead guitar, backing vocals), Ian Grushka (bass guitar) and Cyrus Bolooki (drums). Longtime rhythm guitarist and lyricist Steve Klein departed from the band in late 2013, following "personal differences." During their lengthy recording career, the band have released eight studio albums, one live album, two EPs, and three cover albums.

Emerging as part of the second wave of pop punk in the late 1990s, music critics consider them a key pioneer of the genre. Labelled the "godfathers of (the second late 1990's wave of) pop punk",AllMusic credits them for "practically serving alongside the work of Blink-182 as the blueprint to the entire genre for the early 2000s." Also renowned for their energetic live performances, the band has garnered a cult following since their inception.

History

Formation and debut releases (1997–1999)

Perelman School of Medicine at the University of Pennsylvania

The Perelman School of Medicine, commonly known as Penn Med, is the medical school of the University of Pennsylvania. It is located in the University City section of Philadelphia. Founded in 1765, the Perelman School of Medicine is the oldest medical school in the United States. Today, it is a major center of biomedical research and education, and it is widely regarded as one of the country's top medical schools. Penn Med consistently ranks among the highest recipients of NIH research awards, and it currently holds the #5 spot on U.S. News & World Report's "Best Medical Schools: Research" list.

History

The school of medicine was founded by Dr. John Morgan, a graduate of the College of Philadelphia (A.B. 1757) and the University of Edinburgh Medical School (M.D. 1763). In 1765, after training in Edinburgh and other European cities, Dr. Morgan returned to Philadelphia. With fellow University of Edinburgh Medical School graduate Dr. William Shippen Jr., Morgan persuaded the Trustees of the University of Pennsylvania to found the first medical school in the Original Thirteen Colonies. Only months before the medical school was created, Morgan delivered an address to the Trustees and the citizens of Philadelphia, "Upon the Institution of Medical Schools in America" during which he expressed his desire for the new medical school to become a model institution:

Mount Sinai

Mount Sinai (Arabic: طُور سِينَاء‎, translit. Ṭūr Sīnāʼ ; Egyptian Arabic: جَبَل مُوسَى, translit.: Jabal Mūsā or Gabal Mūsā; literally "Moses' Mountain" or "Mount Moses"; Hebrew: הר סיני‎ translit. Har Sinai), also known as Mount Horeb, is a mountain in the Sinai Peninsula of Egypt that is a possible location of the biblical Mount Sinai. The latter is mentioned many times in the Book of Exodus and other books of the Bible, and the Quran. According to Jewish, Christian, and Islamic tradition, the biblical Mount Sinai was the place where Moses received the Ten Commandments.

Geography

Mount Sinai is a 2,285-metre (7,497 ft) moderately high mountain near the city of Saint Catherine in the Sinai region. It is next to Mount Catherine (at 2,629 m or 8,625 ft, the highest peak in Egypt). It is surrounded on all sides by higher peaks of the mountain range.

Geology

Mount Sinai's rocks were formed in the late stage of the Arabian-Nubian Shield's (ANS) evolution. Mount Sinai displays a ring complex that consists of alkaline granites intruded into diverse rock types, including volcanics. The granites range in composition from syenogranite to alkali feldspar granite. The volcanic rocks are alkaline to peralkaline and they are represented by subaerial flows and eruptions and subvolcanic porphyry. Generally, the nature of the exposed rocks in Mount Sinai indicates that they originated from differing depths.

Knife

A knife (plural knives) is a tool with a cutting edge or blade, hand-held or otherwise, with most having a handle. Some types of knives are used as utensils, including knives used at the dining table (e.g., butter knives and steak knives) and knives used in the kitchen (e.g., paring knife, bread knife, cleaver). Many types of knives are used as tools, such as the utility knife carried by soldiers, the pocket knife carried by hikers and the hunting knife used by hunters. Knives are also used as a traditional or religious implement, such as the kirpan. Some types of knives are used as weapons, such as the daggers used by commandos or the switchblades used by 1950s-era criminal gang members. Some types of knives are used as sports equipment (e.g., throwing knives).

Knife-like tools were used at least two-and-a-half million years ago, as evidenced by the Oldowan tools. Originally made of rock, bone, flint, and obsidian, knives have evolved in construction as technology has, with blades being made from bronze, copper, iron, steel, ceramics, and titanium. Many cultures have their unique version of the knife. Due to its role as humankind's first tool, certain cultures have attached spiritual and religious significance to the knife.