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In plane geometry, an angle is the figure formed by two rays, called the sides of the angle, sharing a common endpoint, called the vertex of the angle. Angles formed by two rays lie in a plane, but this plane does not have to be a Euclidean plane. Angles are also formed by the intersection of two planes in Euclidean and other spaces. These are called dihedral angles. Angles formed by the intersection of two curves in a plane are defined as the angle determined by the tangent rays at the point of intersection. Similar statements hold in space, for example, the spherical angle formed by two great circles on a sphere is the dihedral angle between the planes determined by the great circles.
In geometry, the tangent line to a plane curve at a given point is the straight line that "just touches" the curve at that point. Leibniz defined it as the line through a pair of infinitely close points on the curve. More precisely, a straight line is said to be a tangent of a curve y = f(x) at a point x = c on the curve if the line passes through the point (c, f ) on the curve and has slope f'(c), where f' is the derivative of f. A similar definition applies to space curves and curves in n-dimensional Euclidean space.
Vellum is prepared animal skin or "membrane", typically used as a material for writing on. Parchment is another term for this material, and if vellum is distinguished from this, it is by vellum being made from calfskin, as opposed to that from other animals, or otherwise being of higher quality. Vellum is prepared for writing or printing on, to produce single pages, scrolls, codices or books. The word is derived from the Latin word vitulinum meaning "made from calf", leading to Old French vélin, "calfskin".)
Cosmetics are substances or products used to enhance or alter the appearance of the face or fragrance and texture of the body. Many cosmetics are designed for use of applying to the face and body. They are generally mixtures of chemical compounds derived from natural sources, or may be synthetic or artificial. Cosmetics that are applied to the face to enhance one's appearance may be called makeup which include lipstick, mascara, eye shadow, foundation, blush, and bronzer, among other products.
Skin effect is the tendency of an alternating electric current (AC) to become distributed within a conductor such that the current density is largest near the surface of the conductor, and decreases with greater depths in the conductor. The electric current flows mainly at the "skin" of the conductor, between the outer surface and a level called the skin depth. The skin effect causes the effective resistance of the conductor to increase at higher frequencies where the skin depth is smaller, thus reducing the effective cross-section of the conductor. The skin effect is due to opposing eddy currents induced by the changing magnetic field resulting from the alternating current. At 60 Hz in copper, the skin depth is about 8.5 mm. At high frequencies the skin depth becomes much smaller. Increased AC resistance due to the skin effect can be mitigated by using specially woven litz wire. Because the interior of a large conductor carries so little of the current, tubular conductors such as pipe can be used to save weight and cost.
A route of administration in pharmacology and toxicology is the path by which a drug, fluid, poison, or other substance is taken into the body.
Bernhard Langer is a German professional golfer. He is a two-time Masters champion and was one of the world's leading golfers throughout the 1980s and 1990s. In 1986, he became the sport's first official number one ranked player following the creation of the OWGR.
The dermis or corium is a layer of skin between the epidermis and subcutaneous tissues, that primarily consists of dense irregular connective tissue and cushions the body from stress and strain. It is divided into two layers, the superficial area adjacent to the epidermis called the papillary region and a deep thicker area known as the reticular dermis. The dermis is tightly connected to the epidermis through a basement membrane. Structural components of the dermis are collagen, elastic fibers, and extrafibrillar matrix. It also contains mechanoreceptors that provide the sense of touch and thermoreceptors that provide the sense of heat. In addition, hair follicles, sweat glands, sebaceous glands, apocrine glands, lymphatic vessels, nerves and blood vessels are present in the dermis. Those blood vessels provide nourishment and waste removal for both dermal and epidermal cells.
Ellen Jane Langer is a professor of psychology at Harvard University; in 1981, she became the first woman ever to be tenured in psychology at Harvard. Langer studies the illusion of control, decision-making, aging, and mindfulness theory. Her most influential work is Counterclockwise, published in 2009, which answers the questions of aging from her extensive research, and increased interest in the particulars of aging across the nation.
Robert Samuel Langer, Jr. FREng is an American chemical engineer, scientist, entrepreneur, inventor and one of the twelve Institute Professors at the Massachusetts Institute of Technology.
A Group is a formal category in the International Code of Nomenclature for Cultivated Plants (ICNCP) used for cultivated plants (cultivars) that share a defined characteristic. It is represented in a botanical name by the symbol Group or Gp. "Group" or "Gp" is always written with a capital G in a botanical name, or epithet. The Group is not italicized in a plant's name. The ICNCP introduced the term and symbol "Group" in 2004, as a replacement for the lengthy and hyphenated "cultivar-group", which had previously been the category's name since 1969. For the old name "cultivar-group", the non-standard abbreviation cv. group or cv. Group is also sometimes encountered. There is a slight difference in meaning, since a cultivar-group was defined to comprise cultivars, whereas a Group may include individual plants.
Blaschko's lines, also called the lines of Blaschko, named after Alfred Blaschko, are lines of normal cell development in the skin. These lines are invisible under normal conditions. They become apparent when some diseases of the skin or mucosa manifest themselves according to these patterns. They follow a "V" shape over the back, "S" shaped whirls over the chest and sides, and wavy shapes on the head.
The Sclerodermataceae are a family of fungi in the order Boletales, containing several genera of unusual fungi that little resemble boletes. Taxa, which include species commonly known as the ‘hard-skinned puffballs’, ‘earthballs’, or 'earthstars', are widespread in both temperate and tropical regions. The best known members include the earthball Scleroderma citrinum, the dye fungus Pisolithus tinctorius and the 'prettymouths' of the genus Calostoma.
Microturbulence is a form of turbulence that varies over small distance scales.
Skin lines are anatomical features which include:
Langer's lines, Langer lines of skin tension, or sometimes called cleavage lines, are topological lines drawn on a map of the human body. They correspond to the natural orientation of collagen fibers in the dermis, and are generally perpendicular to the orientation of the underlying muscle fibers. Langer's lines have relevance to forensic science and the development of surgical techniques.
Mayanti Langer is an Indian journalist with STAR and generally works for Star Sports network. She has hosted many tournaments like Football Cafe on Zee Sports, 2010 FIFA World Cup broadcast on ESPN, 2010 Commonwealth Games, 2011 Cricket World Cup, 2014 Indian Super League, 2015 ICC Cricket World Cup,2018 Indian Premier League, 2019 Indian Premier League and 2019 Cricket World Cup
Susanne Katherina Langer was an American philosopher, writer, and educator and was well known for her theories on the influences of art on the mind. She was one of the first women in American history to achieve an academic career in philosophy and the first woman to be popularly and professionally recognized as an American philosopher. Langer is best known for her 1942 book entitled, Philosophy in a New Key. In 1960, Langer was elected a Fellow of the American Academy of Arts and Sciences.
Aeolosaurini is an extinct clade of titanosaurian dinosaurs known from the late Cretaceous period of Argentina and Brazil. Rodrigo M. Santucci and Antonio C. de Arruda-Campos (2011) in their cladistic analysis found Aeolosaurus, Gondwanatitan, Maxakalisaurus, Panamericansaurus and Rinconsaurus to be aeolosaurids.
Karl Langer, Ritter von Edenberg was an Austrian anatomist. He is known for his work in the field of topographical anatomy.
References
- ↑ Bland, Kirdby I.; Sarr, Michael G.; Csendes, Atilla (2008). General Surgery: Principles and International Practice, Volume 1. Springer. p. 1,534. ISBN 9781846288326.
- ↑ Wilhelmi BJ, Blackwell SJ, Phillips LG (July 1999). "Langer's lines: to use or not to use". Plast. Reconstr. Surg. 104 (1): 208–14. doi:10.1097/00006534-199907000-00032. PMID 10597698.
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