Buffer, solution that can keep its relative acidity or alkalinity constant, i.e., keep its pH constant, despite the addition of strong acids or strong bases. Buffer solutions are frequently solutions that contain either a weak acid and one of its salts or a weak base and one of its salts. Many acid-base reactions take place in living organisms.
Buy discount vitamins, nutritional supplements, low carb, weight loss supplements and other health products from Vitacost. Vitacost sells top brand vitamins at wholesale cost. Buffer definition, an apparatus at the end of a railroad car, railroad track, etc., for absorbing shock during coupling, collisions, etc.
However, for organisms to perform certain vital functions, the body fluids associated with these functions must maintain a constant pH. For example, blood must maintain a pH of close to 7.4 in order to carry oxygen from the lungs to cells; blood is therefore a powerful buffer. Buffer[ ′bəfər]. An area of memory used for storing messages. Typically, a buffer will have other attributes such as an input pointer (where new data will be written into the buffer), and output pointer (where the next item will be read from) and/or a count of the space used or free.
Buffers are used to decouple processes so that the reader and writer may operate at different speeds or on different sized blocks of data. Jailbreak S. There are many different algorithms for using buffers, e.g.
First-in first-out (FIFO or shelf), last-in first-out (LIFO or stack), double buffering (allowing one buffer to be read while the other is being written), cyclic buffer (reading or writing past the end wraps around to the beginning). An electronic device to provide compatibility between two signals, e.g. Changing voltage levels or current capability. BufferA reserved segment of memory within a program that is used to hold the data being processed. Buffers are set up to hold data coming in from and going out to the network or a local file. In a streaming media application, the program uses buffers to store an advance supply of audio or video data to compensate for momentary delays. With computers, each application can allocate and deallocate its buffers from the general memory pool.
For printers and other peripherals, the buffers provide temporary storage for data in the memory of the device. Want to thank TFD for its existence?, add a link to this page, or visit. Link to this page.
• a person or thing that shields and protects against annoyance, harm, hostile forces, etc., or that lessens the impact of a shock or reversal. • any reserve moneys, negotiable securities, legal procedures, etc., that protect a person, organization, or country against financial ruin. An animal population that becomes the prey of a predator that usually feeds on a different species. A storage device for temporarily holding data until the computer is ready to receive or process the data, as when a receiving unit has an operating speed lower than that of the unit feeding data to it.
• Electronics. A circuit with a single output activated by one or more of several inputs. • any substance or mixture of compounds that, added to a solution, is capable of neutralizing both acids and bases without appreciably changing the original acidity or alkalinity of the solution. • Also called buffer solution. A solution containing such a substance.
Noun • a soft, thick, light-yellow leather with a napped surface, originally made from buffalo skin but later also from other skins, used for making belts, pouches, etc. • a brownish-yellow color; tan. • a devotee or well-informed student of some activity or subject: Civil War buffs avidly read the new biography of Grant.
The bare skin: in the buff. • Also called. A thick, short coat of buffalo leather, worn especially by English soldiers and American colonists in the 17th century.
1570s, buffe leather 'leather made of buffalo hide,' from Middle French buffle 'buffalo' (15c., via Italian, from Latin bufalus; see (n.)). The color term comes from the hue of buffalo hides (later ox hides). Association of 'hide' and 'skin' led c.1600 to in the buff. Buff-colored uniforms of New York City volunteer firefighters since 1820s led to meaning 'enthusiast' (1903). The Buffs are men and boys whose love of fires, fire-fighting and firemen is a predominant characteristic. • Chemistry A substance that prevents change in the acidity of a solution when an acid or base is added to the solution or when the solution is diluted. Buffers are used to make solutions of known pH, especially for instrument calibration purposes.
Natural buffers also exist in living organisms, where biochemical reactions are very sensitive to changes in pH. • Computer Science A device or an area of a computer that temporarily stores data that is being transferred between two machines that process data at different rates, such as a computer and a printer.
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