Core

Core may refer to:

Computers and technology

Core (functional analysis)

In functional analysis, a discipline within mathematics, a core may be:

Core (anatomy)

In common parlance, the core of the body is broadly considered to be the torso. Functional movements are highly dependent on this part of the body, and lack of core muscular development can result in a predisposition to injury. The major muscles of the core reside in the area of the belly and the mid and lower back (not the shoulders), and peripherally include the hips, the shoulders and the neck.

Muscles

Major muscles included are the pelvic floor muscles, transversus abdominis, multifidus, internal and external obliques, rectus abdominis, erector spinae (sacrospinalis) especially the longissimus thoracis, and the diaphragm. Minor core muscles include the latissimus dorsi, gluteus maximus, and trapezius.

Functions of the core

The core is used to stabilize the thorax and the pelvis during dynamic movement and it also provides internal pressure to expel substances (vomit, feces, carbon-laden air, etc.).

Continence is the ability to withhold bowel movements, and urinary stress incontinence (the lack of bladder control due to pelvic floor dysfunction) can result from weak core musculature.

Foam

A foam is a substance that is formed by trapping pockets of gas in a liquid or solid. A bath sponge and the head on a glass of beer are examples of foams. In most foams, the volume of gas is large, with thin films of liquid or solid separating the regions of gas.

An important division of solid foams is into closed-cell foams and open-cell foams. In a closed-cell foam, the gas forms discrete pockets, each completely surrounded by the solid material. In an open-cell foam, the gas pockets connect with each other. A bath sponge is an example of an open-cell foam: water can easily flow through the entire structure, displacing the air. A camping mat is an example of a closed-cell foam: the gas pockets are sealed from each other so the mat cannot soak up water.

Foams are examples of dispersed media. In general, gas is present in large amount so it will be divided into gas bubbles of many different sizes (the material is polydisperse) separated by liquid regions which may form films, thinner and thinner when the liquid phase is drained out of the system films. When the principal scale is small, i.e. for a very fine foam, this dispersed medium can be considered as a type of colloid.

Foam (disambiguation)

Foam may refer to:

See also

Richard Harlan

Richard Harlan (September 19, 1796 – September 30, 1843) was an American naturalist, zoologist, herpetologist, physicist, and paleontologist. He was the author of Fauna Americana (1825) and American Herpetology.

Harlan was born in Philadelphia, to Joshua Harlan, a wealthy Quaker merchant, and his wife Sarah, one of their ten children. He was three years older than his brother Josiah Harlan, who would become the first American to visit Afghanistan and who was the presumed inspiration for Rudyard Kipling's story The Man Who Would Be King. He graduated in medicine from the University of Pennsylvania taking time off during his studies to spend a year at sea as a ship's surgeon for the British East India Company. In 1821 he was elected professor of comparative anatomy in the Philadelphia museum. One of his passions was the collection and study of human skulls. At its peak, his collection contained 275 skulls, the largest such collection in America. He died of apoplexy in New Orleans, Louisiana.

Harlan (company)

Harlan Sprague Dawley Inc. is a supplier of animals and other services to laboratories for the purpose of animal testing. It provides pre-clinical research tools and services for the pharmaceutical, biotechnology, agrochemicals, industrial chemical, and food industries.

Harlan offers products and services for the discovery and safety of new medicines and compounds, including research models and services, health monitoring reports, genetic monitoring reports, Teklad lab animal diets, bedding and enrichment products, surgical services, genetic testing services, research model support services, biological products and antibody production services, flexible film isolators, transportation services, and stock and strain elimination. It also provides contract research services, which comprise toxicology, environmental science, and regulatory services.

In 2013, Harlan expanded the availability of its contract breeding services from the United Kingdom and Southern Europe into Northern Europe through a partnership with BioXpert, an animal science and services company.