Bone

A bone is a rigid organ that constitutes part of the vertebral skeleton. Bones support and protect the various organs of the body, produce red and white blood cells, store minerals and also enable mobility. Bone tissue is a type of dense connective tissue. Bones come in a variety of shapes and sizes and have a complex internal and external structure. They are lightweight yet strong and hard, and serve multiple functions. Mineralized osseous tissue, or bone tissue, is of two types, cortical and cancellous, and gives a bone rigidity and a coral-like three-dimensional internal structure. Other types of tissue found in bones include marrow, endosteum, periosteum, nerves, blood vessels and cartilage.

Bone is an active tissue composed of different types of bone cells. Osteoblasts are involved in the creation and mineralisation of bone; osteocytes and osteoclasts are involved in the reabsorption of bone tissue. The mineralised matrix of bone tissue has an organic component mainly of collagen and an inorganic component of bone mineral made up of various salts.

Chiller

A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. This liquid can then be circulated through a heat exchanger to cool air or equipment as required. As a necessary byproduct, refrigeration creates waste heat that must be exhausted to ambient or, for greater efficiency, recovered for heating purposes. Concerns in design and selection of chillers include performance, efficiency, maintenance, and product life cycle environmental impact

Use in air conditioning

In air conditioning systems, chilled water is typically distributed to heat exchangers, or coils, in air handling units or other types of terminal devices which cool the air in their respective space(s), and then the water is re-circulated back to the chiller to be cooled again. These cooling coils transfer sensible heat and latent heat from the air to the chilled water, thus cooling and usually dehumidifying the air stream. A typical chiller for air conditioning applications is rated between 15 and 150 short tons (13 and 134 long tons; 14 and 136 t) (180,000 to 18,000,000 BTU/h or 53 to 5,275 kW), and at least one manufacturer can produce chillers capable of up to 8,500 tons of cooling. Chilled water temperatures can range from 35 to 45 °F (2 to 7 °C), depending upon application requirements.

Sheriff

In principle, a sheriff is a legal official with responsibility for a "shire", i.e. county. In practice, the specific combination of legal, political and ceremonial duties of a sheriff varies greatly from country to country.

Bondi Rescue

Bondi Rescue is an Australian factual television programme which is broadcast on Channel Ten. The programme, which has aired since 2006, follows the daily lives and routines of the Waverley Council professional lifeguards who patrol Bondi Beach.

Bondi Rescue was first broadcast in 2006. A spin-off, set in Bali, Indonesia, also briefly screened in 2008.Bondi Rescue is also broadcast internationally throughout 100 countries.

The show was created and produced by part-time lifeguard Ben Davies. It is narrated by British-Australian presenter and host Andrew Günsberg.

Overview

The Bondi lifeguards perform around five thousand rescues over the summer period. They also deal with other incidents including lost children, shark scares, bluebottle stings, injuries, sexual deviants, drunk beach goers and thieves on the beach. Every once in a while, celebrities also make appearances on their shores. These have included actors/comedians David Hasselhoff and Kelly Slater (stars of the US lifeguards fiction show Baywatch), Hugh Grant, Zac Efron, Rowan Atkinson, Paris Hilton, Russell Crowe, entrepreneur Richard Branson, musician Snoop Dogg, Steve Irwin and daughter Bindi and the Indian Cricket Team. Bondi veterinarian Chris Brown repeatedly appeared on Bondi beach, meeting lifeguards, in his own show Bondi Vet.

Nat Love

Nat Love (pronounced "Nate" Love) (June 1854 – 1921), (sometimes "Deadwood Dick"), was an African-American cowboy and former slave in the period following the American Civil War. His self-reported exploits and claims (as found in his published autobiography) have made him the most famous Black folk hero of the Old West.

Early life

Love was born a slave on the plantation of Robert Love in Davidson County, Tennessee, around 1854. His father was a slave foreman in a plantation's fields, and his mother the manager of its kitchen. Love had two siblings: an older sister, Sally, and a younger brother, Jordan. Despite slavery era statutes that outlawed black literacy, he learned to read and write as a child with the help of his father, Sampson. When slavery ended, Love's parents stayed on the Love plantation as sharecroppers, attempting to raise tobacco and corn on about 20 acres, but Sampson died shortly after the second crop was planted. Afterward, Nat took a second job working on a local farm to help make ends meet. At about this time, he was noted as having a gift for breaking horses. After some time of working extra odd jobs in the area, he won a horse in a raffle, which he then sold back to the owner for $50. He used the money to leave town and, at the age of 16, headed West.