Joint (building)

A building joint is a junction where building elements meet without applying a static load from one element to another. When one or more of these vertical or horizontal elements that meet are required by the local building code to have a fire-resistance rating, the resulting opening that makes up the joint must be firestopped in order to restore the required compartmentalisation.

Qualification requirements

Such joints are often subject to movement, as a function of the building's design basis. For a sample certification listing indicating fire tested motion, click here. Firestops must be able to demonstrate the ability to withstand operational movement prior to fire testing. Firestops for such building joints can be qualified to UL 2079 -- Tests for Fire Resistance of Building Joint Systems.

Whether or not the building elements forming the joint have a fire-resistance rating, the joint design must still consider the anticipated operational movement of each joint. Timing is also important, as freshly poured concrete shrinks particularly during the first few months of a new building, potentially causing joint size changes.

Kinematic pair

A kinematic pair is a connection between two bodies that imposes constraints on their relative movement. Franz Reuleaux introduced the kinematic pair as a new approach to the study of machines that provided an advance over the motion of elements consisting of simple machines.

Description

Kinematics is the branch of classical mechanics which describes the motion of points, bodies (objects) and systems of bodies (groups of objects) without consideration of the causes of motion. Kinematics as a field of study is often referred to as the "geometry of motion". For further detail, see Analytical dynamics.

Hartenberg & Denavit presents the definition of a kinematic pair:

Lower pair

A lower pair is an ideal joint that constrains contact between a surface in the moving body to a corresponding surface in the fixed body. A lower pair is one in which there occurs a surface or area contact between two members, e.g. nut and screw, universal joint used to connect two propeller shafts. Cases of lower joints:

Cannabis (drug)

Cannabis, also known as marijuana and by numerous other names, is a preparation of the Cannabis plant intended for use as a psychoactive drug or medicine. The main psychoactive part of cannabis is tetrahydrocannabinol (THC); it is one of 483 known compounds in the plant, including at least 84 other cannabinoids, such as cannabidiol (CBD), cannabinol (CBN), and tetrahydrocannabivarin (THCV).

Cannabis is often consumed for its mental and physical effects, such as heightened mood, relaxation, and an increase in appetite. Possible side effects include a decrease in short-term memory, dry mouth, impaired motor skills, red eyes, and feelings of paranoia or anxiety. Onset of effects is within minutes when smoked and about 30 minutes when eaten. They last for between two and six hours.

Cannabis is mostly used recreationally or as a medicinal drug. It may also be used as part of religious or spiritual rites. In 2013, between 128 and 232 million people used cannabis (2.7% to 4.9% of the global population between the ages of 15 and 65). In 2015, almost half of the people in the United States have tried marijuana, 12% have used it in the past year, and 7.3% have used it in the past month.

Gloria (heating system)

Gloria (meaning glory in Spanish) was a central heating system used in Castile beginning in the Middle Ages. It was a direct descendant of the Roman hypocaust, and due to its slow rate of combustion, it allowed people to use smaller fuels such as hay instead of wood.

Description

The Gloria consisted of a firebox, generally located outside (in a courtyard, for example), which burned hay, and one or more ducts that ran under the floors of the rooms to be heated. The warm exhaust gases from the combustion would pass through these ducts and then be released outside through a vertical flue.

The system is more efficient than a fireplace, because the rate of combustion (and therefore the heat output) can be regulated by restricting the airflow into the firebox. Moreover, the air required for combustion does not have to pass through the interior of the building, which reduces cold drafts. Finally, because the firebox is not open to the interior, there is no risk of filling the interior with smoke.

Gloria (1980 film)

Gloria is a 1980 American crime thriller film written and directed by John Cassavetes. It tells the story of a gangster's girlfriend who goes on the run with a young boy who is being hunted by the mob for information he may or may not have. It stars Gena Rowlands, Julie Carmen, Buck Henry, and John Adames.

Plot

In the South Bronx, Jeri Dawn is heading home on the bus with bags of groceries. She gets off at her stop and accidentally drops all her bags. After picking them up, she heads to an apartment building. Once inside the lobby, she passes a man whose dress and appearance are out of place. The woman quickly boards the elevator and anxiously waits for it to reach her floor, where she then gets off and heads to a room far from the elevator.

She is met by her husband Jack Dawn, an accountant for a New York City mob family. There is a contract on Jack and his family, as he has been acting as an informant for the FBI. Suddenly, the family's neighbor, Gloria Swenson, rings their doorbell, asking to borrow some coffee. Jeri tells Gloria of the impending hit and implores Gloria to protect the children. Gloria, a former mobster's girlfriend, tells Jeri that she doesn't like kids but begrudgingly agrees. The Dawns' daughter Carmen refuses to leave and locks herself in the bathroom, so Gloria takes only their young son Phil to her apartment – just narrowly missing the hit squad.

Gloria (Them song)

"Gloria" is a song written by Northern Irish singer-songwriter Van Morrison and originally recorded by Morrison's band Them in 1964 and released as the B-side of "Baby, Please Don't Go". The song became a garage rock staple and a part of many rock bands' repertoires. It is particularly memorable for its "G–L–O–R–I–A" chorus. It is easy to play, as a simple three-chord song, and thus is popular with those learning to play guitar.

History

Morrison said that he wrote "Gloria" while he performed with the Monarchs in Germany in the summer of 1963, at just about the time he turned eighteen years old. He started to perform it at the Maritime Hotel when he returned to Belfast and joined up with the Gamblers to form the band Them. He would ad-lib lyrics as he performed, sometimes stretching the song to fifteen or twenty minutes. After signing a contract with Dick Rowe and Decca, Them went to London for a recording session at Decca Three Studios in West Hampstead on 5 July 1964; "Gloria" was one of the seven songs recorded that day. Besides Morrison, present were Billy Harrison on guitar, Alan Henderson on bass, Ronnie Millings on drums and Patrick John McCauley on keyboards. Rowe brought in session musicians Arthur Greenslade on organ and Bobby Graham on drums, since he considered the Them members too inexperienced. There remains some dispute about whether Millings and McCauley were miked up, but Alan Henderson contends that Them constituted the first rock group to use two drummers on a recording. Although some sources claim that Jimmy Page played second guitar, other sources deny this.