C81 (music)
C81 or C-81 may refer to : * ''C81'' (album) (1981) * C-81 (Michigan county highway) * C-81 Reliant, a 1933 military aircraft * Campbell Airport's FAA LID code * Hodgkin's lymphoma's ICD-10 code * NGC 6352's Caldwell catalog number * Ruy Lopez The Ruy Lopez (; ), also called the Spanish Opening or Spanish Game, is a chess opening characterised by the moves: :1. e4 e5 :2. Nf3 Nc6 :3. Bb5 The Ruy Lopez is named after 16th-century Spanish priest Ruy López de Segura. It is one o ...

C81 (album)
''C81'' was a cassette compiled for the British music paper ''NME'' in 1981 (hence (C)assette 81) and released in conjunction with the record label Rough Trade. Featuring a number of contemporary musical acts and performers, it was intended to mark the first five years of the independent label movement in the UK record industry and Rough Trade itself. It was the first in a series of many cassette releases from the paper, including the ''C86'' compilation of 1986. Background ''C81'' was compiled by ''NME'' journalist Roy Carr, and Christopher Rose, who worked in public relations for Rough Trade. To obtain a copy, ''NME'' readers needed to collect two coupons from the magazine and send off £1.50. The first printed coupons and advertisement for the cassette were in the issue dated 31 January 1981. By the time ''C81'' went on general sale at the end of May that year, 25,500 copies had been sold through the coupon offer, which represented a "big commercial success" according to Carr. ...
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C-81 (Michigan County Highway)
The county-designated highways in Michigan comprise a system of primary county roads across the US state of Michigan. Unlike the State Trunkline Highway System, these highways have alphanumeric designations with letters that correspond to one of eight lettered zones in the state. The County-Designated Highway System (CDH System) was created in 1970 in response to the business concerns of a woman from Saugatuck. Her one-woman crusade in the 1960s started after the highway in front of her motel was turned over to local control as a county road and removed from state highway maps when the nearby freeway opened. After nearly a decade of efforts, the first two test highways were designated, one each in the Lower and Upper peninsulas of the state and included on the 1970 state highway map. The system was created and expanded in scope , after it was approved by the County Road Association of Michigan and the State Highway Commission. The system uses eight lettered zones which are divi ...
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C-81 Reliant
The Stinson Reliant is a popular single-engine four- to five-seat high-wing monoplane manufactured by the Stinson Aircraft Division of the Aviation Manufacturing Corporation of Wayne, Michigan. Design and development The Reliant is a high-wing, fixed-tailwheel land monoplane powered with a variety of radial engines. 1,327 Reliants of all types were made from 1933 to 1941, in different models, from SR-1 to SR-10. The final commercial model, the Stinson Reliant SR-10, was introduced in 1938. A militarized version was first flown in February 1942 and remained in production through several additional versions (all externally identical) until late 1943 for the US and British armed forces. Reliant production can be broken into two distinct types – the straight-wing Reliants (all models up to SR-6) and the gull-wing Reliants (all models from SR-7 and after, including the militarized V-77/AT-19), with there being little in common between the two groups of types. The straight-wing ...
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Campbell Airport
Campbell Airport is a public-use airport located two miles (3 km) southwest of the central business district of Grayslake, a village in Lake County, Illinois, United States. It is privately owned by Kane Illinois Properties, Inc. Facilities and aircraft Campbell Airport covers an area of which contains two runways: 9/27 with a 3,270 x 40 ft (997 x 12 m) asphalt pavement and 6/24 with a 3,573 x 40 ft (1,089 x 12 m) asphalt and turf surface. For the 12-month period ending July 31, 2022, the airport had 30,000 general aviation aircraft operations, an average of 82 per day. At that time, there were no aircraft based at this airport. Accidents & Incidents *On October 13, 1981, a Cessna 310 crashed after takeoff from Campbell. The four people on board were killed. *On August 15, 1999, a Piper PA-28 Cherokee impacted power lines a mile southwest of the airport while on approach. All four people on board died. The probable cause was the pilot's inability to maintain ...
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Hodgkin's Lymphoma
Hodgkin lymphoma (HL) is a type of lymphoma, in which cancer originates from a specific type of white blood cell called lymphocytes, where multinucleated Reed–Sternberg cells (RS cells) are present in the patient's lymph nodes. The condition was named after the English physician Thomas Hodgkin, who first described it in 1832. Symptoms may include fever, night sweats, and weight loss. Often, nonpainful enlarged lymph nodes occur in the neck, under the arm, or in the groin. Those affected may feel tired or be itchy. The two major types of Hodgkin lymphoma are classic Hodgkin lymphoma and nodular lymphocyte-predominant Hodgkin lymphoma. About half of cases of Hodgkin lymphoma are due to Epstein–Barr virus (EBV) and these are generally the classic form. Other risk factors include a family history of the condition and having HIV/AIDS. Diagnosis is conducted by confirming the presence of cancer and identifying RS cells in lymph node biopsies. The virus-positive cases are classified ...
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NGC 6352
NGC 6352 (also known as Caldwell 81) is a globular cluster of stars in the southern constellation of Ara, located approximately from the Sun. It was discovered by Scottish astronomer James Dunlop on May 14, 1826. The cluster has a Shapley–Sawyer Concentration Class of XI:. A telescope with a aperture is required to resolve the stars within this loose cluster. This cluster is about 12.67 billion years old with two distinct stellar populations; the second generation is only around 10 million years younger than the first. It lies approximately from the Galactic Center and from the galactic plane. The orbital motion of this cluster through the Milky Way suggests it is a member of the bulge or disk population. It is relatively metal-rich for an object of this class, having a metallicity of –0.70. The core radius is and the tidal radius A globular cluster is a spheroidal conglomeration of stars. Globular clusters are bound together by gravity, with a higher conc ...
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